From: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
XELPDP has C10 and C20 phys from Synopsys to drive displays. Each phy
has a dedicated PIPE 5.2 Message bus for configuration. This message
bus is used to configure the phy internal registers.
Bspec: 64599, 65100, 65101, 67610, 67636
Cc: Mika Kahola <mika.kahola@xxxxxxxxx>
Cc: Imre Deak <imre.deak@xxxxxxxxx>
Cc: Uma Shankar <uma.shankar@xxxxxxxxx>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
Signed-off-by: Mika Kahola <mika.kahola@xxxxxxxxx> (v4)
---
drivers/gpu/drm/i915/Makefile | 1 +
drivers/gpu/drm/i915/display/intel_cx0_phy.c | 179 +
drivers/gpu/drm/i915/i915_reg.h | 59 +
drivers/gpu/drm/i915/intel_pm.c | 5066 ------------------
4 files changed, 239 insertions(+), 5066 deletions(-)
create mode 100644 drivers/gpu/drm/i915/display/intel_cx0_phy.c
delete mode 100644 drivers/gpu/drm/i915/intel_pm.c
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index a26edcdadc21..994f87a12782 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -279,6 +279,7 @@ i915-y += \
display/icl_dsi.o \
display/intel_backlight.o \
display/intel_crt.o \
+ display/intel_cx0_phy.o \
display/intel_ddi.o \
display/intel_ddi_buf_trans.o \
display/intel_display_trace.o \
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
new file mode 100644
index 000000000000..7930b0255cfa
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
@@ -0,0 +1,179 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include "intel_de.h"
+#include "intel_uncore.h"
+
+static void intel_cx0_bus_reset(struct drm_i915_private *i915, enum port port, int lane)
+{
+ enum phy phy = intel_port_to_phy(i915, port);
+
+ /* Bring the phy to idle. */
+ intel_de_write(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+ XELPDP_PORT_M2P_TRANSACTION_RESET);
+
+ /* Wait for Idle Clear. */
+ if (intel_de_wait_for_clear(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+ XELPDP_PORT_M2P_TRANSACTION_RESET,
+ XELPDP_MSGBUS_TIMEOUT_SLOW)) {
+ drm_err_once(&i915->drm, "Failed to bring PHY %c to idle. \n", phy_name(phy));
+ return;
+ }
+
+ intel_de_write(i915, XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane), ~0);
+ return;
+}
+
+__maybe_unused static u8 intel_cx0_read(struct drm_i915_private *i915, enum port port,
+ int lane, u16 addr)
+{
+ enum phy phy = intel_port_to_phy(i915, port);
+ u32 val = 0;
+ int attempts = 0;
+
+retry:
+ if (attempts == 3) {
+ drm_err_once(&i915->drm, "PHY %c Read %04x failed after %d retries. Status: 0x%x\n", phy_name(phy), addr, attempts, val ?: 0);
+ return 0;
+ }
+
+ /* Wait for pending transactions.*/
+ if (intel_de_wait_for_clear(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+ XELPDP_PORT_M2P_TRANSACTION_PENDING,
+ XELPDP_MSGBUS_TIMEOUT_SLOW)) {
+ drm_dbg(&i915->drm, "PHY %c Timeout waiting for previous transaction to complete. Reset the bus and retry.\n", phy_name(phy));
+ attempts++;
+ intel_cx0_bus_reset(i915, port, lane);
+ goto retry;
+ }
+
+ /* Issue the read command. */
+ intel_de_write(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+ XELPDP_PORT_M2P_TRANSACTION_PENDING |
+ XELPDP_PORT_M2P_COMMAND_READ |
+ XELPDP_PORT_M2P_ADDRESS(addr));
+
+ /* Wait for response ready. And read response.*/
+ if (__intel_wait_for_register(&i915->uncore,
+ XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane),
+ XELPDP_PORT_P2M_RESPONSE_READY,
+ XELPDP_PORT_P2M_RESPONSE_READY,
+ XELPDP_MSGBUS_TIMEOUT_FAST_US,
+ XELPDP_MSGBUS_TIMEOUT_SLOW, &val)) {
+ drm_dbg(&i915->drm, "PHY %c Timeout waiting for Read response ACK. Status: 0x%x\n", phy_name(phy), val);
+ attempts++;
+ intel_cx0_bus_reset(i915, port, lane);
+ goto retry;
+ }
+
+ /* Check for error. */
+ if (val & XELPDP_PORT_P2M_ERROR_SET) {
+ drm_dbg(&i915->drm, "PHY %c Error occurred during read command. Status: 0x%x\n", phy_name(phy), val);
+ attempts++;
+ intel_cx0_bus_reset(i915, port, lane);
+ goto retry;
+ }
+
+ /* Check for Read Ack. */
+ if (REG_FIELD_GET(XELPDP_PORT_P2M_COMMAND_TYPE_MASK, val) !=
+ XELPDP_PORT_P2M_COMMAND_READ_ACK) {
+ drm_dbg(&i915->drm, "PHY %c Not a Read response. MSGBUS Status: 0x%x.\n", phy_name(phy), val);
+ attempts++;
+ intel_cx0_bus_reset(i915, port, lane);
+ goto retry;
+ }
+
+ /* Clear Response Ready flag.*/
+ intel_de_write(i915, XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane), ~0);
+ return (u8)REG_FIELD_GET(XELPDP_PORT_P2M_DATA_MASK, val);
+}
+
+static int intel_cx0_wait_cwrite_ack(struct drm_i915_private *i915,
+ enum port port, int lane)
+{
+ enum phy phy = intel_port_to_phy(i915, port);
+ u32 val;
+
+ /* Check for write ack. */
+ if (__intel_wait_for_register(&i915->uncore,
+ XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane),
+ XELPDP_PORT_P2M_RESPONSE_READY,
+ XELPDP_PORT_P2M_RESPONSE_READY,
+ XELPDP_MSGBUS_TIMEOUT_FAST_US,
+ XELPDP_MSGBUS_TIMEOUT_SLOW, &val)) {
+ drm_dbg(&i915->drm, "PHY %c Timeout waiting for Committed message ACK. Status: 0x%x\n", phy_name(phy), val);
+ return -ETIMEDOUT;
+ }
+
+ if ((REG_FIELD_GET(XELPDP_PORT_P2M_COMMAND_TYPE_MASK, val) !=
+ XELPDP_PORT_P2M_COMMAND_WRITE_ACK) || val & XELPDP_PORT_P2M_ERROR_SET) {
+ drm_dbg(&i915->drm, "PHY %c Unexpected ACK received. MSGBUS STATUS: 0x%x.\n", phy_name(phy), val);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+__maybe_unused static void intel_cx0_write(struct drm_i915_private *i915, enum port port,
+ int lane, u16 addr, u8 data, bool committed)
+{
+ enum phy phy = intel_port_to_phy(i915, port);
+ int attempts = 0;
+
+retry:
+ if (attempts == 3) {
+ drm_err_once(&i915->drm, "PHY %c Write %04x failed after %d retries.\n", phy_name(phy), addr, attempts);
+ return;
+ }
+
+ /* Wait for pending transactions.*/
+ if (intel_de_wait_for_clear(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+ XELPDP_PORT_M2P_TRANSACTION_PENDING,
+ XELPDP_MSGBUS_TIMEOUT_SLOW)) {
+ drm_dbg(&i915->drm, "PHY %c Timeout waiting for previous transaction to complete. Reset the bus and retry.\n", phy_name(phy));
+ attempts++;
+ intel_cx0_bus_reset(i915, port, lane);
+ goto retry;
+ }
+
+ /* Issue the write command. */
+ intel_de_write(i915, XELPDP_PORT_M2P_MSGBUS_CTL(port, lane),
+ XELPDP_PORT_M2P_TRANSACTION_PENDING |
+ (committed ? XELPDP_PORT_M2P_COMMAND_WRITE_COMMITTED :
+ XELPDP_PORT_M2P_COMMAND_WRITE_UNCOMMITTED) |
+ XELPDP_PORT_M2P_DATA(data) |
+ XELPDP_PORT_M2P_ADDRESS(addr));
+
+ /* Check for error. */
+ if (committed) {
+ if (intel_cx0_wait_cwrite_ack(i915, port, lane) < 0) {
+ attempts++;
+ intel_cx0_bus_reset(i915, port, lane);
+ goto retry;
+ }
+ } else if ((intel_de_read(i915, XELPDP_PORT_P2M_MSGBUS_STATUS(phy, lane)) &
+ XELPDP_PORT_P2M_ERROR_SET)) {
+ drm_dbg(&i915->drm, "PHY %c Error occurred during write command.\n", phy_name(phy));
+ attempts++;
+ intel_cx0_bus_reset(i915, port, lane);
+ goto retry;
+ }
+
+ intel_de_write(i915, XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane), ~0);
+
+ return;
+}
+
+__maybe_unused static void intel_cx0_rmw(struct drm_i915_private *i915, enum port port,
+ int lane, u16 addr, u8 clear, u8 set, bool committed)
+{
+ u8 old, val;
+
+ old = intel_cx0_read(i915, port, lane, addr);
+ val = (old & ~clear) | set;
+
+ if (val != old)
+ intel_cx0_write(i915, port, lane, addr, val, committed);
+}
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 5003a5ffbc6a..9b98d37de95c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8375,4 +8375,63 @@ enum skl_power_gate {
#define MTL_MEDIA_GSI_BASE 0x380000
+#define PUNIT_MMIO_CR_POC_STRAPS _MMIO(0x281078)
+#define NUM_TILES_MASK REG_GENMASK(1, 0)
+#define CD_ALIVE REG_BIT(2)
+#define SOCKET_ID_MASK REG_GENMASK(7, 3)
+
+/* Define the BAR and offset for the accelerator fabric CSRs */
+#define CD_BASE_OFFSET 0x291000
+#define CD_BAR_SIZE (256 * 1024)
+
+/*
+ * In general, the i915 should not touch the IAF registers. The registers
+ * will be passed as an IO resource via the MFD interface. However, it
+ * is necessary to put the IRQ bits in a known state, before the MFD cell
+ * is registered.
+ *
+ * So define these registers for i915 usage.
+ */
+#define CPORT_MBDB_CSRS (CD_BASE_OFFSET + 0x6000)
+#define CPORT_MBDB_CSRS_END (CPORT_MBDB_CSRS + 0x1000)
+#define CPORT_MBDB_INT_ENABLE_MASK _MMIO(CPORT_MBDB_CSRS + 0x8)
+
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_A 0x64040
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_B 0x64140
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC1 0x16F240
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC2 0x16F440
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC3 0x16F640
+#define _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC4 0x16F840
+#define _XELPDP_PORT_M2P_MSGBUS_CTL(port, lane) (_PICK(port, \
+ [PORT_A] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_A, \
+ [PORT_B] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_B, \
+ [PORT_TC1] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC1, \
+ [PORT_TC2] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC2, \
+ [PORT_TC3] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC3, \
+ [PORT_TC4] = _XELPDP_PORT_M2P_MSGBUS_CTL_LN0_USBC4) + ((lane) * 4))
+
+#define XELPDP_PORT_M2P_MSGBUS_CTL(port, lane) _MMIO(_XELPDP_PORT_M2P_MSGBUS_CTL(port, lane))
+#define XELPDP_PORT_M2P_TRANSACTION_PENDING REG_BIT(31)
+#define XELPDP_PORT_M2P_COMMAND_TYPE_MASK REG_GENMASK(30, 27)
+#define XELPDP_PORT_M2P_COMMAND_WRITE_UNCOMMITTED REG_FIELD_PREP(XELPDP_PORT_M2P_COMMAND_TYPE_MASK, 0x1)
+#define XELPDP_PORT_M2P_COMMAND_WRITE_COMMITTED REG_FIELD_PREP(XELPDP_PORT_M2P_COMMAND_TYPE_MASK, 0x2)
+#define XELPDP_PORT_M2P_COMMAND_READ REG_FIELD_PREP(XELPDP_PORT_M2P_COMMAND_TYPE_MASK, 0x3)
+#define XELPDP_PORT_M2P_DATA_MASK REG_GENMASK(23, 16)
+#define XELPDP_PORT_M2P_DATA(val) REG_FIELD_PREP(XELPDP_PORT_M2P_DATA_MASK, val)
+#define XELPDP_PORT_M2P_TRANSACTION_RESET REG_BIT(15)
+#define XELPDP_PORT_M2P_ADDRESS_MASK REG_GENMASK(11, 0)
+#define XELPDP_PORT_M2P_ADDRESS(val) REG_FIELD_PREP(XELPDP_PORT_M2P_ADDRESS_MASK, val)
+
+#define XELPDP_PORT_P2M_MSGBUS_STATUS(port, lane) _MMIO(_XELPDP_PORT_M2P_MSGBUS_CTL(port, lane) + 8)
+#define XELPDP_PORT_P2M_RESPONSE_READY REG_BIT(31)
+#define XELPDP_PORT_P2M_COMMAND_TYPE_MASK REG_GENMASK(30, 27)
+#define XELPDP_PORT_P2M_COMMAND_READ_ACK 0x4
+#define XELPDP_PORT_P2M_COMMAND_WRITE_ACK 0x5
+#define XELPDP_PORT_P2M_DATA_MASK REG_GENMASK(23, 16)
+#define XELPDP_PORT_P2M_DATA(val) REG_FIELD_PREP(XELPDP_PORT_P2M_DATA_MASK, val)
+#define XELPDP_PORT_P2M_ERROR_SET REG_BIT(15)
+
+#define XELPDP_MSGBUS_TIMEOUT_SLOW 1
+#define XELPDP_MSGBUS_TIMEOUT_FAST_US 2
+
#endif /* _I915_REG_H_ */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
deleted file mode 100644
index 2595ec5aeb77..000000000000
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ /dev/null
@@ -1,5066 +0,0 @@
-/*
- * Copyright © 2012 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- *
- * Authors:
- * Eugeni Dodonov <eugeni.dodonov@xxxxxxxxx>
- *
- */
-
-#include "display/intel_de.h"
-#include "display/intel_display_trace.h"
-#include "display/skl_watermark.h"
-
-#include "gt/intel_engine_regs.h"
-#include "gt/intel_gt_regs.h"
-
-#include "i915_drv.h"
-#include "intel_mchbar_regs.h"
-#include "intel_pm.h"
-#include "vlv_sideband.h"
-
-struct drm_i915_clock_gating_funcs {
- void (*init_clock_gating)(struct drm_i915_private *i915);
-};
-
-/* used in computing the new watermarks state */
-struct intel_wm_config {
- unsigned int num_pipes_active;
- bool sprites_enabled;
- bool sprites_scaled;
-};
-
-static void gen9_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- if (HAS_LLC(dev_priv)) {
- /*
- * WaCompressedResourceDisplayNewHashMode:skl,kbl
- * Display WA #0390: skl,kbl
- *
- * Must match Sampler, Pixel Back End, and Media. See
- * WaCompressedResourceSamplerPbeMediaNewHashMode.
- */
- intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR1_1,
- intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR1_1) |
- SKL_DE_COMPRESSED_HASH_MODE);
- }
-
- /* See Bspec note for PSR2_CTL bit 31, Wa#828:skl,bxt,kbl,cfl */
- intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR1_1,
- intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP);
-
- /* WaEnableChickenDCPR:skl,bxt,kbl,glk,cfl */
- intel_uncore_write(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1,
- intel_uncore_read(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM);
-
- /*
- * WaFbcWakeMemOn:skl,bxt,kbl,glk,cfl
- * Display WA #0859: skl,bxt,kbl,glk,cfl
- */
- intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
- DISP_FBC_MEMORY_WAKE);
-}
-
-static void bxt_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- gen9_init_clock_gating(dev_priv);
-
- /* WaDisableSDEUnitClockGating:bxt */
- intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) |
- GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
-
- /*
- * FIXME:
- * GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ applies on 3x6 GT SKUs only.
- */
- intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) |
- GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ);
-
- /*
- * Wa: Backlight PWM may stop in the asserted state, causing backlight
- * to stay fully on.
- */
- intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_0, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_0) |
- PWM1_GATING_DIS | PWM2_GATING_DIS);
-
- /*
- * Lower the display internal timeout.
- * This is needed to avoid any hard hangs when DSI port PLL
- * is off and a MMIO access is attempted by any privilege
- * application, using batch buffers or any other means.
- */
- intel_uncore_write(&dev_priv->uncore, RM_TIMEOUT, MMIO_TIMEOUT_US(950));
-
- /*
- * WaFbcTurnOffFbcWatermark:bxt
- * Display WA #0562: bxt
- */
- intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
- DISP_FBC_WM_DIS);
-
- /*
- * WaFbcHighMemBwCorruptionAvoidance:bxt
- * Display WA #0883: bxt
- */
- intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
- intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A)) |
- DPFC_DISABLE_DUMMY0);
-}
-
-static void glk_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- gen9_init_clock_gating(dev_priv);
-
- /*
- * WaDisablePWMClockGating:glk
- * Backlight PWM may stop in the asserted state, causing backlight
- * to stay fully on.
- */
- intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_0, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_0) |
- PWM1_GATING_DIS | PWM2_GATING_DIS);
-}
-
-static void pnv_get_mem_freq(struct drm_i915_private *dev_priv)
-{
- u32 tmp;
-
- tmp = intel_uncore_read(&dev_priv->uncore, CLKCFG);
-
- switch (tmp & CLKCFG_FSB_MASK) {
- case CLKCFG_FSB_533:
- dev_priv->fsb_freq = 533; /* 133*4 */
- break;
- case CLKCFG_FSB_800:
- dev_priv->fsb_freq = 800; /* 200*4 */
- break;
- case CLKCFG_FSB_667:
- dev_priv->fsb_freq = 667; /* 167*4 */
- break;
- case CLKCFG_FSB_400:
- dev_priv->fsb_freq = 400; /* 100*4 */
- break;
- }
-
- switch (tmp & CLKCFG_MEM_MASK) {
- case CLKCFG_MEM_533:
- dev_priv->mem_freq = 533;
- break;
- case CLKCFG_MEM_667:
- dev_priv->mem_freq = 667;
- break;
- case CLKCFG_MEM_800:
- dev_priv->mem_freq = 800;
- break;
- }
-
- /* detect pineview DDR3 setting */
- tmp = intel_uncore_read(&dev_priv->uncore, CSHRDDR3CTL);
- dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0;
-}
-
-static void ilk_get_mem_freq(struct drm_i915_private *dev_priv)
-{
- u16 ddrpll, csipll;
-
- ddrpll = intel_uncore_read16(&dev_priv->uncore, DDRMPLL1);
- csipll = intel_uncore_read16(&dev_priv->uncore, CSIPLL0);
-
- switch (ddrpll & 0xff) {
- case 0xc:
- dev_priv->mem_freq = 800;
- break;
- case 0x10:
- dev_priv->mem_freq = 1066;
- break;
- case 0x14:
- dev_priv->mem_freq = 1333;
- break;
- case 0x18:
- dev_priv->mem_freq = 1600;
- break;
- default:
- drm_dbg(&dev_priv->drm, "unknown memory frequency 0x%02x\n",
- ddrpll & 0xff);
- dev_priv->mem_freq = 0;
- break;
- }
-
- switch (csipll & 0x3ff) {
- case 0x00c:
- dev_priv->fsb_freq = 3200;
- break;
- case 0x00e:
- dev_priv->fsb_freq = 3733;
- break;
- case 0x010:
- dev_priv->fsb_freq = 4266;
- break;
- case 0x012:
- dev_priv->fsb_freq = 4800;
- break;
- case 0x014:
- dev_priv->fsb_freq = 5333;
- break;
- case 0x016:
- dev_priv->fsb_freq = 5866;
- break;
- case 0x018:
- dev_priv->fsb_freq = 6400;
- break;
- default:
- drm_dbg(&dev_priv->drm, "unknown fsb frequency 0x%04x\n",
- csipll & 0x3ff);
- dev_priv->fsb_freq = 0;
- break;
- }
-}
-
-static const struct cxsr_latency cxsr_latency_table[] = {
- {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
- {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
- {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
- {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */
- {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */
-
- {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
- {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
- {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
- {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */
- {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */
-
- {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
- {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
- {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
- {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */
- {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */
-
- {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
- {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
- {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
- {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */
- {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */
-
- {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
- {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
- {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
- {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */
- {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */
-
- {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
- {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
- {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
- {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */
- {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */
-};
-
-static const struct cxsr_latency *intel_get_cxsr_latency(bool is_desktop,
- bool is_ddr3,
- int fsb,
- int mem)
-{
- const struct cxsr_latency *latency;
- int i;
-
- if (fsb == 0 || mem == 0)
- return NULL;
-
- for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
- latency = &cxsr_latency_table[i];
- if (is_desktop == latency->is_desktop &&
- is_ddr3 == latency->is_ddr3 &&
- fsb == latency->fsb_freq && mem == latency->mem_freq)
- return latency;
- }
-
- DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
-
- return NULL;
-}
-
-static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable)
-{
- u32 val;
-
- vlv_punit_get(dev_priv);
-
- val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2);
- if (enable)
- val &= ~FORCE_DDR_HIGH_FREQ;
- else
- val |= FORCE_DDR_HIGH_FREQ;
- val &= ~FORCE_DDR_LOW_FREQ;
- val |= FORCE_DDR_FREQ_REQ_ACK;
- vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val);
-
- if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) &
- FORCE_DDR_FREQ_REQ_ACK) == 0, 3))
- drm_err(&dev_priv->drm,
- "timed out waiting for Punit DDR DVFS request\n");
-
- vlv_punit_put(dev_priv);
-}
-
-static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable)
-{
- u32 val;
-
- vlv_punit_get(dev_priv);
-
- val = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
- if (enable)
- val |= DSP_MAXFIFO_PM5_ENABLE;
- else
- val &= ~DSP_MAXFIFO_PM5_ENABLE;
- vlv_punit_write(dev_priv, PUNIT_REG_DSPSSPM, val);
-
- vlv_punit_put(dev_priv);
-}
-
-#define FW_WM(value, plane) \
- (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK)
-
-static bool _intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable)
-{
- bool was_enabled;
- u32 val;
-
- if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
- was_enabled = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF_VLV) & FW_CSPWRDWNEN;
- intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF_VLV, enable ? FW_CSPWRDWNEN : 0);
- intel_uncore_posting_read(&dev_priv->uncore, FW_BLC_SELF_VLV);
- } else if (IS_G4X(dev_priv) || IS_I965GM(dev_priv)) {
- was_enabled = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF) & FW_BLC_SELF_EN;
- intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF, enable ? FW_BLC_SELF_EN : 0);
- intel_uncore_posting_read(&dev_priv->uncore, FW_BLC_SELF);
- } else if (IS_PINEVIEW(dev_priv)) {
- val = intel_uncore_read(&dev_priv->uncore, DSPFW3);
- was_enabled = val & PINEVIEW_SELF_REFRESH_EN;
- if (enable)
- val |= PINEVIEW_SELF_REFRESH_EN;
- else
- val &= ~PINEVIEW_SELF_REFRESH_EN;
- intel_uncore_write(&dev_priv->uncore, DSPFW3, val);
- intel_uncore_posting_read(&dev_priv->uncore, DSPFW3);
- } else if (IS_I945G(dev_priv) || IS_I945GM(dev_priv)) {
- was_enabled = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF) & FW_BLC_SELF_EN;
- val = enable ? _MASKED_BIT_ENABLE(FW_BLC_SELF_EN) :
- _MASKED_BIT_DISABLE(FW_BLC_SELF_EN);
- intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF, val);
- intel_uncore_posting_read(&dev_priv->uncore, FW_BLC_SELF);
- } else if (IS_I915GM(dev_priv)) {
- /*
- * FIXME can't find a bit like this for 915G, and
- * and yet it does have the related watermark in
- * FW_BLC_SELF. What's going on?
- */
- was_enabled = intel_uncore_read(&dev_priv->uncore, INSTPM) & INSTPM_SELF_EN;
- val = enable ? _MASKED_BIT_ENABLE(INSTPM_SELF_EN) :
- _MASKED_BIT_DISABLE(INSTPM_SELF_EN);
- intel_uncore_write(&dev_priv->uncore, INSTPM, val);
- intel_uncore_posting_read(&dev_priv->uncore, INSTPM);
- } else {
- return false;
- }
-
- trace_intel_memory_cxsr(dev_priv, was_enabled, enable);
-
- drm_dbg_kms(&dev_priv->drm, "memory self-refresh is %s (was %s)\n",
- str_enabled_disabled(enable),
- str_enabled_disabled(was_enabled));
-
- return was_enabled;
-}
-
-/**
- * intel_set_memory_cxsr - Configure CxSR state
- * @dev_priv: i915 device
- * @enable: Allow vs. disallow CxSR
- *
- * Allow or disallow the system to enter a special CxSR
- * (C-state self refresh) state. What typically happens in CxSR mode
- * is that several display FIFOs may get combined into a single larger
- * FIFO for a particular plane (so called max FIFO mode) to allow the
- * system to defer memory fetches longer, and the memory will enter
- * self refresh.
- *
- * Note that enabling CxSR does not guarantee that the system enter
- * this special mode, nor does it guarantee that the system stays
- * in that mode once entered. So this just allows/disallows the system
- * to autonomously utilize the CxSR mode. Other factors such as core
- * C-states will affect when/if the system actually enters/exits the
- * CxSR mode.
- *
- * Note that on VLV/CHV this actually only controls the max FIFO mode,
- * and the system is free to enter/exit memory self refresh at any time
- * even when the use of CxSR has been disallowed.
- *
- * While the system is actually in the CxSR/max FIFO mode, some plane
- * control registers will not get latched on vblank. Thus in order to
- * guarantee the system will respond to changes in the plane registers
- * we must always disallow CxSR prior to making changes to those registers.
- * Unfortunately the system will re-evaluate the CxSR conditions at
- * frame start which happens after vblank start (which is when the plane
- * registers would get latched), so we can't proceed with the plane update
- * during the same frame where we disallowed CxSR.
- *
- * Certain platforms also have a deeper HPLL SR mode. Fortunately the
- * HPLL SR mode depends on CxSR itself, so we don't have to hand hold
- * the hardware w.r.t. HPLL SR when writing to plane registers.
- * Disallowing just CxSR is sufficient.
- */
-bool intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable)
-{
- bool ret;
-
- mutex_lock(&dev_priv->display.wm.wm_mutex);
- ret = _intel_set_memory_cxsr(dev_priv, enable);
- if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
- dev_priv->display.wm.vlv.cxsr = enable;
- else if (IS_G4X(dev_priv))
- dev_priv->display.wm.g4x.cxsr = enable;
- mutex_unlock(&dev_priv->display.wm.wm_mutex);
-
- return ret;
-}
-
-/*
- * Latency for FIFO fetches is dependent on several factors:
- * - memory configuration (speed, channels)
- * - chipset
- * - current MCH state
- * It can be fairly high in some situations, so here we assume a fairly
- * pessimal value. It's a tradeoff between extra memory fetches (if we
- * set this value too high, the FIFO will fetch frequently to stay full)
- * and power consumption (set it too low to save power and we might see
- * FIFO underruns and display "flicker").
- *
- * A value of 5us seems to be a good balance; safe for very low end
- * platforms but not overly aggressive on lower latency configs.
- */
-static const int pessimal_latency_ns = 5000;
-
-#define VLV_FIFO_START(dsparb, dsparb2, lo_shift, hi_shift) \
- ((((dsparb) >> (lo_shift)) & 0xff) | ((((dsparb2) >> (hi_shift)) & 0x1) << 8))
-
-static void vlv_get_fifo_size(struct intel_crtc_state *crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- struct vlv_fifo_state *fifo_state = &crtc_state->wm.vlv.fifo_state;
- enum pipe pipe = crtc->pipe;
- int sprite0_start, sprite1_start;
- u32 dsparb, dsparb2, dsparb3;
-
- switch (pipe) {
- case PIPE_A:
- dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB);
- dsparb2 = intel_uncore_read(&dev_priv->uncore, DSPARB2);
- sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 0, 0);
- sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 8, 4);
- break;
- case PIPE_B:
- dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB);
- dsparb2 = intel_uncore_read(&dev_priv->uncore, DSPARB2);
- sprite0_start = VLV_FIFO_START(dsparb, dsparb2, 16, 8);
- sprite1_start = VLV_FIFO_START(dsparb, dsparb2, 24, 12);
- break;
- case PIPE_C:
- dsparb2 = intel_uncore_read(&dev_priv->uncore, DSPARB2);
- dsparb3 = intel_uncore_read(&dev_priv->uncore, DSPARB3);
- sprite0_start = VLV_FIFO_START(dsparb3, dsparb2, 0, 16);
- sprite1_start = VLV_FIFO_START(dsparb3, dsparb2, 8, 20);
- break;
- default:
- MISSING_CASE(pipe);
- return;
- }
-
- fifo_state->plane[PLANE_PRIMARY] = sprite0_start;
- fifo_state->plane[PLANE_SPRITE0] = sprite1_start - sprite0_start;
- fifo_state->plane[PLANE_SPRITE1] = 511 - sprite1_start;
- fifo_state->plane[PLANE_CURSOR] = 63;
-}
-
-static int i9xx_get_fifo_size(struct drm_i915_private *dev_priv,
- enum i9xx_plane_id i9xx_plane)
-{
- u32 dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB);
- int size;
-
- size = dsparb & 0x7f;
- if (i9xx_plane == PLANE_B)
- size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size;
-
- drm_dbg_kms(&dev_priv->drm, "FIFO size - (0x%08x) %c: %d\n",
- dsparb, plane_name(i9xx_plane), size);
-
- return size;
-}
-
-static int i830_get_fifo_size(struct drm_i915_private *dev_priv,
- enum i9xx_plane_id i9xx_plane)
-{
- u32 dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB);
- int size;
-
- size = dsparb & 0x1ff;
- if (i9xx_plane == PLANE_B)
- size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size;
- size >>= 1; /* Convert to cachelines */
-
- drm_dbg_kms(&dev_priv->drm, "FIFO size - (0x%08x) %c: %d\n",
- dsparb, plane_name(i9xx_plane), size);
-
- return size;
-}
-
-static int i845_get_fifo_size(struct drm_i915_private *dev_priv,
- enum i9xx_plane_id i9xx_plane)
-{
- u32 dsparb = intel_uncore_read(&dev_priv->uncore, DSPARB);
- int size;
-
- size = dsparb & 0x7f;
- size >>= 2; /* Convert to cachelines */
-
- drm_dbg_kms(&dev_priv->drm, "FIFO size - (0x%08x) %c: %d\n",
- dsparb, plane_name(i9xx_plane), size);
-
- return size;
-}
-
-/* Pineview has different values for various configs */
-static const struct intel_watermark_params pnv_display_wm = {
- .fifo_size = PINEVIEW_DISPLAY_FIFO,
- .max_wm = PINEVIEW_MAX_WM,
- .default_wm = PINEVIEW_DFT_WM,
- .guard_size = PINEVIEW_GUARD_WM,
- .cacheline_size = PINEVIEW_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params pnv_display_hplloff_wm = {
- .fifo_size = PINEVIEW_DISPLAY_FIFO,
- .max_wm = PINEVIEW_MAX_WM,
- .default_wm = PINEVIEW_DFT_HPLLOFF_WM,
- .guard_size = PINEVIEW_GUARD_WM,
- .cacheline_size = PINEVIEW_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params pnv_cursor_wm = {
- .fifo_size = PINEVIEW_CURSOR_FIFO,
- .max_wm = PINEVIEW_CURSOR_MAX_WM,
- .default_wm = PINEVIEW_CURSOR_DFT_WM,
- .guard_size = PINEVIEW_CURSOR_GUARD_WM,
- .cacheline_size = PINEVIEW_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params pnv_cursor_hplloff_wm = {
- .fifo_size = PINEVIEW_CURSOR_FIFO,
- .max_wm = PINEVIEW_CURSOR_MAX_WM,
- .default_wm = PINEVIEW_CURSOR_DFT_WM,
- .guard_size = PINEVIEW_CURSOR_GUARD_WM,
- .cacheline_size = PINEVIEW_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i965_cursor_wm_info = {
- .fifo_size = I965_CURSOR_FIFO,
- .max_wm = I965_CURSOR_MAX_WM,
- .default_wm = I965_CURSOR_DFT_WM,
- .guard_size = 2,
- .cacheline_size = I915_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i945_wm_info = {
- .fifo_size = I945_FIFO_SIZE,
- .max_wm = I915_MAX_WM,
- .default_wm = 1,
- .guard_size = 2,
- .cacheline_size = I915_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i915_wm_info = {
- .fifo_size = I915_FIFO_SIZE,
- .max_wm = I915_MAX_WM,
- .default_wm = 1,
- .guard_size = 2,
- .cacheline_size = I915_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i830_a_wm_info = {
- .fifo_size = I855GM_FIFO_SIZE,
- .max_wm = I915_MAX_WM,
- .default_wm = 1,
- .guard_size = 2,
- .cacheline_size = I830_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i830_bc_wm_info = {
- .fifo_size = I855GM_FIFO_SIZE,
- .max_wm = I915_MAX_WM/2,
- .default_wm = 1,
- .guard_size = 2,
- .cacheline_size = I830_FIFO_LINE_SIZE,
-};
-
-static const struct intel_watermark_params i845_wm_info = {
- .fifo_size = I830_FIFO_SIZE,
- .max_wm = I915_MAX_WM,
- .default_wm = 1,
- .guard_size = 2,
- .cacheline_size = I830_FIFO_LINE_SIZE,
-};
-
-/**
- * intel_wm_method1 - Method 1 / "small buffer" watermark formula
- * @pixel_rate: Pipe pixel rate in kHz
- * @cpp: Plane bytes per pixel
- * @latency: Memory wakeup latency in 0.1us units
- *
- * Compute the watermark using the method 1 or "small buffer"
- * formula. The caller may additonally add extra cachelines
- * to account for TLB misses and clock crossings.
- *
- * This method is concerned with the short term drain rate
- * of the FIFO, ie. it does not account for blanking periods
- * which would effectively reduce the average drain rate across
- * a longer period. The name "small" refers to the fact the
- * FIFO is relatively small compared to the amount of data
- * fetched.
- *
- * The FIFO level vs. time graph might look something like:
- *
- * |\ |\
- * | \ | \
- * __---__---__ (- plane active, _ blanking)
- * -> time
- *
- * or perhaps like this:
- *
- * |\|\ |\|\
- * __----__----__ (- plane active, _ blanking)
- * -> time
- *
- * Returns:
- * The watermark in bytes
- */
-static unsigned int intel_wm_method1(unsigned int pixel_rate,
- unsigned int cpp,
- unsigned int latency)
-{
- u64 ret;
-
- ret = mul_u32_u32(pixel_rate, cpp * latency);
- ret = DIV_ROUND_UP_ULL(ret, 10000);
-
- return ret;
-}
-
-/**
- * intel_wm_method2 - Method 2 / "large buffer" watermark formula
- * @pixel_rate: Pipe pixel rate in kHz
- * @htotal: Pipe horizontal total
- * @width: Plane width in pixels
- * @cpp: Plane bytes per pixel
- * @latency: Memory wakeup latency in 0.1us units
- *
- * Compute the watermark using the method 2 or "large buffer"
- * formula. The caller may additonally add extra cachelines
- * to account for TLB misses and clock crossings.
- *
- * This method is concerned with the long term drain rate
- * of the FIFO, ie. it does account for blanking periods
- * which effectively reduce the average drain rate across
- * a longer period. The name "large" refers to the fact the
- * FIFO is relatively large compared to the amount of data
- * fetched.
- *
- * The FIFO level vs. time graph might look something like:
- *
- * |\___ |\___
- * | \___ | \___
- * | \ | \
- * __ --__--__--__--__--__--__ (- plane active, _ blanking)
- * -> time
- *
- * Returns:
- * The watermark in bytes
- */
-static unsigned int intel_wm_method2(unsigned int pixel_rate,
- unsigned int htotal,
- unsigned int width,
- unsigned int cpp,
- unsigned int latency)
-{
- unsigned int ret;
-
- /*
- * FIXME remove once all users are computing
- * watermarks in the correct place.
- */
- if (WARN_ON_ONCE(htotal == 0))
- htotal = 1;
-
- ret = (latency * pixel_rate) / (htotal * 10000);
- ret = (ret + 1) * width * cpp;
-
- return ret;
-}
-
-/**
- * intel_calculate_wm - calculate watermark level
- * @pixel_rate: pixel clock
- * @wm: chip FIFO params
- * @fifo_size: size of the FIFO buffer
- * @cpp: bytes per pixel
- * @latency_ns: memory latency for the platform
- *
- * Calculate the watermark level (the level at which the display plane will
- * start fetching from memory again). Each chip has a different display
- * FIFO size and allocation, so the caller needs to figure that out and pass
- * in the correct intel_watermark_params structure.
- *
- * As the pixel clock runs, the FIFO will be drained at a rate that depends
- * on the pixel size. When it reaches the watermark level, it'll start
- * fetching FIFO line sized based chunks from memory until the FIFO fills
- * past the watermark point. If the FIFO drains completely, a FIFO underrun
- * will occur, and a display engine hang could result.
- */
-static unsigned int intel_calculate_wm(int pixel_rate,
- const struct intel_watermark_params *wm,
- int fifo_size, int cpp,
- unsigned int latency_ns)
-{
- int entries, wm_size;
-
- /*
- * Note: we need to make sure we don't overflow for various clock &
- * latency values.
- * clocks go from a few thousand to several hundred thousand.
- * latency is usually a few thousand
- */
- entries = intel_wm_method1(pixel_rate, cpp,
- latency_ns / 100);
- entries = DIV_ROUND_UP(entries, wm->cacheline_size) +
- wm->guard_size;
- DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries);
-
- wm_size = fifo_size - entries;
- DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size);
-
- /* Don't promote wm_size to unsigned... */
- if (wm_size > wm->max_wm)
- wm_size = wm->max_wm;
- if (wm_size <= 0)
- wm_size = wm->default_wm;
-
- /*
- * Bspec seems to indicate that the value shouldn't be lower than
- * 'burst size + 1'. Certainly 830 is quite unhappy with low values.
- * Lets go for 8 which is the burst size since certain platforms
- * already use a hardcoded 8 (which is what the spec says should be
- * done).
- */
- if (wm_size <= 8)
- wm_size = 8;
-
- return wm_size;
-}
-
-static bool is_disabling(int old, int new, int threshold)
-{
- return old >= threshold && new < threshold;
-}
-
-static bool is_enabling(int old, int new, int threshold)
-{
- return old < threshold && new >= threshold;
-}
-
-static int intel_wm_num_levels(struct drm_i915_private *dev_priv)
-{
- return dev_priv->display.wm.max_level + 1;
-}
-
-bool intel_wm_plane_visible(const struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state)
-{
- struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-
- /* FIXME check the 'enable' instead */
- if (!crtc_state->hw.active)
- return false;
-
- /*
- * Treat cursor with fb as always visible since cursor updates
- * can happen faster than the vrefresh rate, and the current
- * watermark code doesn't handle that correctly. Cursor updates
- * which set/clear the fb or change the cursor size are going
- * to get throttled by intel_legacy_cursor_update() to work
- * around this problem with the watermark code.
- */
- if (plane->id == PLANE_CURSOR)
- return plane_state->hw.fb != NULL;
- else
- return plane_state->uapi.visible;
-}
-
-static bool intel_crtc_active(struct intel_crtc *crtc)
-{
- /* Be paranoid as we can arrive here with only partial
- * state retrieved from the hardware during setup.
- *
- * We can ditch the adjusted_mode.crtc_clock check as soon
- * as Haswell has gained clock readout/fastboot support.
- *
- * We can ditch the crtc->primary->state->fb check as soon as we can
- * properly reconstruct framebuffers.
- *
- * FIXME: The intel_crtc->active here should be switched to
- * crtc->state->active once we have proper CRTC states wired up
- * for atomic.
- */
- return crtc && crtc->active && crtc->base.primary->state->fb &&
- crtc->config->hw.adjusted_mode.crtc_clock;
-}
-
-static struct intel_crtc *single_enabled_crtc(struct drm_i915_private *dev_priv)
-{
- struct intel_crtc *crtc, *enabled = NULL;
-
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- if (intel_crtc_active(crtc)) {
- if (enabled)
- return NULL;
- enabled = crtc;
- }
- }
-
- return enabled;
-}
-
-static void pnv_update_wm(struct drm_i915_private *dev_priv)
-{
- struct intel_crtc *crtc;
- const struct cxsr_latency *latency;
- u32 reg;
- unsigned int wm;
-
- latency = intel_get_cxsr_latency(!IS_MOBILE(dev_priv),
- dev_priv->is_ddr3,
- dev_priv->fsb_freq,
- dev_priv->mem_freq);
- if (!latency) {
- drm_dbg_kms(&dev_priv->drm,
- "Unknown FSB/MEM found, disable CxSR\n");
- intel_set_memory_cxsr(dev_priv, false);
- return;
- }
-
- crtc = single_enabled_crtc(dev_priv);
- if (crtc) {
- const struct drm_framebuffer *fb =
- crtc->base.primary->state->fb;
- int pixel_rate = crtc->config->pixel_rate;
- int cpp = fb->format->cpp[0];
-
- /* Display SR */
- wm = intel_calculate_wm(pixel_rate, &pnv_display_wm,
- pnv_display_wm.fifo_size,
- cpp, latency->display_sr);
- reg = intel_uncore_read(&dev_priv->uncore, DSPFW1);
- reg &= ~DSPFW_SR_MASK;
- reg |= FW_WM(wm, SR);
- intel_uncore_write(&dev_priv->uncore, DSPFW1, reg);
- drm_dbg_kms(&dev_priv->drm, "DSPFW1 register is %x\n", reg);
-
- /* cursor SR */
- wm = intel_calculate_wm(pixel_rate, &pnv_cursor_wm,
- pnv_display_wm.fifo_size,
- 4, latency->cursor_sr);
- reg = intel_uncore_read(&dev_priv->uncore, DSPFW3);
- reg &= ~DSPFW_CURSOR_SR_MASK;
- reg |= FW_WM(wm, CURSOR_SR);
- intel_uncore_write(&dev_priv->uncore, DSPFW3, reg);
-
- /* Display HPLL off SR */
- wm = intel_calculate_wm(pixel_rate, &pnv_display_hplloff_wm,
- pnv_display_hplloff_wm.fifo_size,
- cpp, latency->display_hpll_disable);
- reg = intel_uncore_read(&dev_priv->uncore, DSPFW3);
- reg &= ~DSPFW_HPLL_SR_MASK;
- reg |= FW_WM(wm, HPLL_SR);
- intel_uncore_write(&dev_priv->uncore, DSPFW3, reg);
-
- /* cursor HPLL off SR */
- wm = intel_calculate_wm(pixel_rate, &pnv_cursor_hplloff_wm,
- pnv_display_hplloff_wm.fifo_size,
- 4, latency->cursor_hpll_disable);
- reg = intel_uncore_read(&dev_priv->uncore, DSPFW3);
- reg &= ~DSPFW_HPLL_CURSOR_MASK;
- reg |= FW_WM(wm, HPLL_CURSOR);
- intel_uncore_write(&dev_priv->uncore, DSPFW3, reg);
- drm_dbg_kms(&dev_priv->drm, "DSPFW3 register is %x\n", reg);
-
- intel_set_memory_cxsr(dev_priv, true);
- } else {
- intel_set_memory_cxsr(dev_priv, false);
- }
-}
-
-/*
- * Documentation says:
- * "If the line size is small, the TLB fetches can get in the way of the
- * data fetches, causing some lag in the pixel data return which is not
- * accounted for in the above formulas. The following adjustment only
- * needs to be applied if eight whole lines fit in the buffer at once.
- * The WM is adjusted upwards by the difference between the FIFO size
- * and the size of 8 whole lines. This adjustment is always performed
- * in the actual pixel depth regardless of whether FBC is enabled or not."
- */
-static unsigned int g4x_tlb_miss_wa(int fifo_size, int width, int cpp)
-{
- int tlb_miss = fifo_size * 64 - width * cpp * 8;
-
- return max(0, tlb_miss);
-}
-
-static void g4x_write_wm_values(struct drm_i915_private *dev_priv,
- const struct g4x_wm_values *wm)
-{
- enum pipe pipe;
-
- for_each_pipe(dev_priv, pipe)
- trace_g4x_wm(intel_crtc_for_pipe(dev_priv, pipe), wm);
-
- intel_uncore_write(&dev_priv->uncore, DSPFW1,
- FW_WM(wm->sr.plane, SR) |
- FW_WM(wm->pipe[PIPE_B].plane[PLANE_CURSOR], CURSORB) |
- FW_WM(wm->pipe[PIPE_B].plane[PLANE_PRIMARY], PLANEB) |
- FW_WM(wm->pipe[PIPE_A].plane[PLANE_PRIMARY], PLANEA));
- intel_uncore_write(&dev_priv->uncore, DSPFW2,
- (wm->fbc_en ? DSPFW_FBC_SR_EN : 0) |
- FW_WM(wm->sr.fbc, FBC_SR) |
- FW_WM(wm->hpll.fbc, FBC_HPLL_SR) |
- FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE0], SPRITEB) |
- FW_WM(wm->pipe[PIPE_A].plane[PLANE_CURSOR], CURSORA) |
- FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE0], SPRITEA));
- intel_uncore_write(&dev_priv->uncore, DSPFW3,
- (wm->hpll_en ? DSPFW_HPLL_SR_EN : 0) |
- FW_WM(wm->sr.cursor, CURSOR_SR) |
- FW_WM(wm->hpll.cursor, HPLL_CURSOR) |
- FW_WM(wm->hpll.plane, HPLL_SR));
-
- intel_uncore_posting_read(&dev_priv->uncore, DSPFW1);
-}
-
-#define FW_WM_VLV(value, plane) \
- (((value) << DSPFW_ ## plane ## _SHIFT) & DSPFW_ ## plane ## _MASK_VLV)
-
-static void vlv_write_wm_values(struct drm_i915_private *dev_priv,
- const struct vlv_wm_values *wm)
-{
- enum pipe pipe;
-
- for_each_pipe(dev_priv, pipe) {
- trace_vlv_wm(intel_crtc_for_pipe(dev_priv, pipe), wm);
-
- intel_uncore_write(&dev_priv->uncore, VLV_DDL(pipe),
- (wm->ddl[pipe].plane[PLANE_CURSOR] << DDL_CURSOR_SHIFT) |
- (wm->ddl[pipe].plane[PLANE_SPRITE1] << DDL_SPRITE_SHIFT(1)) |
- (wm->ddl[pipe].plane[PLANE_SPRITE0] << DDL_SPRITE_SHIFT(0)) |
- (wm->ddl[pipe].plane[PLANE_PRIMARY] << DDL_PLANE_SHIFT));
- }
-
- /*
- * Zero the (unused) WM1 watermarks, and also clear all the
- * high order bits so that there are no out of bounds values
- * present in the registers during the reprogramming.
- */
- intel_uncore_write(&dev_priv->uncore, DSPHOWM, 0);
- intel_uncore_write(&dev_priv->uncore, DSPHOWM1, 0);
- intel_uncore_write(&dev_priv->uncore, DSPFW4, 0);
- intel_uncore_write(&dev_priv->uncore, DSPFW5, 0);
- intel_uncore_write(&dev_priv->uncore, DSPFW6, 0);
-
- intel_uncore_write(&dev_priv->uncore, DSPFW1,
- FW_WM(wm->sr.plane, SR) |
- FW_WM(wm->pipe[PIPE_B].plane[PLANE_CURSOR], CURSORB) |
- FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_PRIMARY], PLANEB) |
- FW_WM_VLV(wm->pipe[PIPE_A].plane[PLANE_PRIMARY], PLANEA));
- intel_uncore_write(&dev_priv->uncore, DSPFW2,
- FW_WM_VLV(wm->pipe[PIPE_A].plane[PLANE_SPRITE1], SPRITEB) |
- FW_WM(wm->pipe[PIPE_A].plane[PLANE_CURSOR], CURSORA) |
- FW_WM_VLV(wm->pipe[PIPE_A].plane[PLANE_SPRITE0], SPRITEA));
- intel_uncore_write(&dev_priv->uncore, DSPFW3,
- FW_WM(wm->sr.cursor, CURSOR_SR));
-
- if (IS_CHERRYVIEW(dev_priv)) {
- intel_uncore_write(&dev_priv->uncore, DSPFW7_CHV,
- FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE1], SPRITED) |
- FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE0], SPRITEC));
- intel_uncore_write(&dev_priv->uncore, DSPFW8_CHV,
- FW_WM_VLV(wm->pipe[PIPE_C].plane[PLANE_SPRITE1], SPRITEF) |
- FW_WM_VLV(wm->pipe[PIPE_C].plane[PLANE_SPRITE0], SPRITEE));
- intel_uncore_write(&dev_priv->uncore, DSPFW9_CHV,
- FW_WM_VLV(wm->pipe[PIPE_C].plane[PLANE_PRIMARY], PLANEC) |
- FW_WM(wm->pipe[PIPE_C].plane[PLANE_CURSOR], CURSORC));
- intel_uncore_write(&dev_priv->uncore, DSPHOWM,
- FW_WM(wm->sr.plane >> 9, SR_HI) |
- FW_WM(wm->pipe[PIPE_C].plane[PLANE_SPRITE1] >> 8, SPRITEF_HI) |
- FW_WM(wm->pipe[PIPE_C].plane[PLANE_SPRITE0] >> 8, SPRITEE_HI) |
- FW_WM(wm->pipe[PIPE_C].plane[PLANE_PRIMARY] >> 8, PLANEC_HI) |
- FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE1] >> 8, SPRITED_HI) |
- FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE0] >> 8, SPRITEC_HI) |
- FW_WM(wm->pipe[PIPE_B].plane[PLANE_PRIMARY] >> 8, PLANEB_HI) |
- FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE1] >> 8, SPRITEB_HI) |
- FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE0] >> 8, SPRITEA_HI) |
- FW_WM(wm->pipe[PIPE_A].plane[PLANE_PRIMARY] >> 8, PLANEA_HI));
- } else {
- intel_uncore_write(&dev_priv->uncore, DSPFW7,
- FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE1], SPRITED) |
- FW_WM_VLV(wm->pipe[PIPE_B].plane[PLANE_SPRITE0], SPRITEC));
- intel_uncore_write(&dev_priv->uncore, DSPHOWM,
- FW_WM(wm->sr.plane >> 9, SR_HI) |
- FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE1] >> 8, SPRITED_HI) |
- FW_WM(wm->pipe[PIPE_B].plane[PLANE_SPRITE0] >> 8, SPRITEC_HI) |
- FW_WM(wm->pipe[PIPE_B].plane[PLANE_PRIMARY] >> 8, PLANEB_HI) |
- FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE1] >> 8, SPRITEB_HI) |
- FW_WM(wm->pipe[PIPE_A].plane[PLANE_SPRITE0] >> 8, SPRITEA_HI) |
- FW_WM(wm->pipe[PIPE_A].plane[PLANE_PRIMARY] >> 8, PLANEA_HI));
- }
-
- intel_uncore_posting_read(&dev_priv->uncore, DSPFW1);
-}
-
-#undef FW_WM_VLV
-
-static void g4x_setup_wm_latency(struct drm_i915_private *dev_priv)
-{
- /* all latencies in usec */
- dev_priv->display.wm.pri_latency[G4X_WM_LEVEL_NORMAL] = 5;
- dev_priv->display.wm.pri_latency[G4X_WM_LEVEL_SR] = 12;
- dev_priv->display.wm.pri_latency[G4X_WM_LEVEL_HPLL] = 35;
-
- dev_priv->display.wm.max_level = G4X_WM_LEVEL_HPLL;
-}
-
-static int g4x_plane_fifo_size(enum plane_id plane_id, int level)
-{
- /*
- * DSPCNTR[13] supposedly controls whether the
- * primary plane can use the FIFO space otherwise
- * reserved for the sprite plane. It's not 100% clear
- * what the actual FIFO size is, but it looks like we
- * can happily set both primary and sprite watermarks
- * up to 127 cachelines. So that would seem to mean
- * that either DSPCNTR[13] doesn't do anything, or that
- * the total FIFO is >= 256 cachelines in size. Either
- * way, we don't seem to have to worry about this
- * repartitioning as the maximum watermark value the
- * register can hold for each plane is lower than the
- * minimum FIFO size.
- */
- switch (plane_id) {
- case PLANE_CURSOR:
- return 63;
- case PLANE_PRIMARY:
- return level == G4X_WM_LEVEL_NORMAL ? 127 : 511;
- case PLANE_SPRITE0:
- return level == G4X_WM_LEVEL_NORMAL ? 127 : 0;
- default:
- MISSING_CASE(plane_id);
- return 0;
- }
-}
-
-static int g4x_fbc_fifo_size(int level)
-{
- switch (level) {
- case G4X_WM_LEVEL_SR:
- return 7;
- case G4X_WM_LEVEL_HPLL:
- return 15;
- default:
- MISSING_CASE(level);
- return 0;
- }
-}
-
-static u16 g4x_compute_wm(const struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state,
- int level)
-{
- struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
- struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
- const struct drm_display_mode *pipe_mode =
- &crtc_state->hw.pipe_mode;
- unsigned int latency = dev_priv->display.wm.pri_latency[level] * 10;
- unsigned int pixel_rate, htotal, cpp, width, wm;
-
- if (latency == 0)
- return USHRT_MAX;
-
- if (!intel_wm_plane_visible(crtc_state, plane_state))
- return 0;
-
- cpp = plane_state->hw.fb->format->cpp[0];
-
- /*
- * WaUse32BppForSRWM:ctg,elk
- *
- * The spec fails to list this restriction for the
- * HPLL watermark, which seems a little strange.
- * Let's use 32bpp for the HPLL watermark as well.
- */
- if (plane->id == PLANE_PRIMARY &&
- level != G4X_WM_LEVEL_NORMAL)
- cpp = max(cpp, 4u);
-
- pixel_rate = crtc_state->pixel_rate;
- htotal = pipe_mode->crtc_htotal;
- width = drm_rect_width(&plane_state->uapi.src) >> 16;
-
- if (plane->id == PLANE_CURSOR) {
- wm = intel_wm_method2(pixel_rate, htotal, width, cpp, latency);
- } else if (plane->id == PLANE_PRIMARY &&
- level == G4X_WM_LEVEL_NORMAL) {
- wm = intel_wm_method1(pixel_rate, cpp, latency);
- } else {
- unsigned int small, large;
-
- small = intel_wm_method1(pixel_rate, cpp, latency);
- large = intel_wm_method2(pixel_rate, htotal, width, cpp, latency);
-
- wm = min(small, large);
- }
-
- wm += g4x_tlb_miss_wa(g4x_plane_fifo_size(plane->id, level),
- width, cpp);
-
- wm = DIV_ROUND_UP(wm, 64) + 2;
-
- return min_t(unsigned int, wm, USHRT_MAX);
-}
-
-static bool g4x_raw_plane_wm_set(struct intel_crtc_state *crtc_state,
- int level, enum plane_id plane_id, u16 value)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
- bool dirty = false;
-
- for (; level < intel_wm_num_levels(dev_priv); level++) {
- struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level];
-
- dirty |= raw->plane[plane_id] != value;
- raw->plane[plane_id] = value;
- }
-
- return dirty;
-}
-
-static bool g4x_raw_fbc_wm_set(struct intel_crtc_state *crtc_state,
- int level, u16 value)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
- bool dirty = false;
-
- /* NORMAL level doesn't have an FBC watermark */
- level = max(level, G4X_WM_LEVEL_SR);
-
- for (; level < intel_wm_num_levels(dev_priv); level++) {
- struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level];
-
- dirty |= raw->fbc != value;
- raw->fbc = value;
- }
-
- return dirty;
-}
-
-static u32 ilk_compute_fbc_wm(const struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state,
- u32 pri_val);
-
-static bool g4x_raw_plane_wm_compute(struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state)
-{
- struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
- struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
- int num_levels = intel_wm_num_levels(to_i915(plane->base.dev));
- enum plane_id plane_id = plane->id;
- bool dirty = false;
- int level;
-
- if (!intel_wm_plane_visible(crtc_state, plane_state)) {
- dirty |= g4x_raw_plane_wm_set(crtc_state, 0, plane_id, 0);
- if (plane_id == PLANE_PRIMARY)
- dirty |= g4x_raw_fbc_wm_set(crtc_state, 0, 0);
- goto out;
- }
-
- for (level = 0; level < num_levels; level++) {
- struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level];
- int wm, max_wm;
-
- wm = g4x_compute_wm(crtc_state, plane_state, level);
- max_wm = g4x_plane_fifo_size(plane_id, level);
-
- if (wm > max_wm)
- break;
-
- dirty |= raw->plane[plane_id] != wm;
- raw->plane[plane_id] = wm;
-
- if (plane_id != PLANE_PRIMARY ||
- level == G4X_WM_LEVEL_NORMAL)
- continue;
-
- wm = ilk_compute_fbc_wm(crtc_state, plane_state,
- raw->plane[plane_id]);
- max_wm = g4x_fbc_fifo_size(level);
-
- /*
- * FBC wm is not mandatory as we
- * can always just disable its use.
- */
- if (wm > max_wm)
- wm = USHRT_MAX;
-
- dirty |= raw->fbc != wm;
- raw->fbc = wm;
- }
-
- /* mark watermarks as invalid */
- dirty |= g4x_raw_plane_wm_set(crtc_state, level, plane_id, USHRT_MAX);
-
- if (plane_id == PLANE_PRIMARY)
- dirty |= g4x_raw_fbc_wm_set(crtc_state, level, USHRT_MAX);
-
- out:
- if (dirty) {
- drm_dbg_kms(&dev_priv->drm,
- "%s watermarks: normal=%d, SR=%d, HPLL=%d\n",
- plane->base.name,
- crtc_state->wm.g4x.raw[G4X_WM_LEVEL_NORMAL].plane[plane_id],
- crtc_state->wm.g4x.raw[G4X_WM_LEVEL_SR].plane[plane_id],
- crtc_state->wm.g4x.raw[G4X_WM_LEVEL_HPLL].plane[plane_id]);
-
- if (plane_id == PLANE_PRIMARY)
- drm_dbg_kms(&dev_priv->drm,
- "FBC watermarks: SR=%d, HPLL=%d\n",
- crtc_state->wm.g4x.raw[G4X_WM_LEVEL_SR].fbc,
- crtc_state->wm.g4x.raw[G4X_WM_LEVEL_HPLL].fbc);
- }
-
- return dirty;
-}
-
-static bool g4x_raw_plane_wm_is_valid(const struct intel_crtc_state *crtc_state,
- enum plane_id plane_id, int level)
-{
- const struct g4x_pipe_wm *raw = &crtc_state->wm.g4x.raw[level];
-
- return raw->plane[plane_id] <= g4x_plane_fifo_size(plane_id, level);
-}
-
-static bool g4x_raw_crtc_wm_is_valid(const struct intel_crtc_state *crtc_state,
- int level)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-
- if (level > dev_priv->display.wm.max_level)
- return false;
-
- return g4x_raw_plane_wm_is_valid(crtc_state, PLANE_PRIMARY, level) &&
- g4x_raw_plane_wm_is_valid(crtc_state, PLANE_SPRITE0, level) &&
- g4x_raw_plane_wm_is_valid(crtc_state, PLANE_CURSOR, level);
-}
-
-/* mark all levels starting from 'level' as invalid */
-static void g4x_invalidate_wms(struct intel_crtc *crtc,
- struct g4x_wm_state *wm_state, int level)
-{
- if (level <= G4X_WM_LEVEL_NORMAL) {
- enum plane_id plane_id;
-
- for_each_plane_id_on_crtc(crtc, plane_id)
- wm_state->wm.plane[plane_id] = USHRT_MAX;
- }
-
- if (level <= G4X_WM_LEVEL_SR) {
- wm_state->cxsr = false;
- wm_state->sr.cursor = USHRT_MAX;
- wm_state->sr.plane = USHRT_MAX;
- wm_state->sr.fbc = USHRT_MAX;
- }
-
- if (level <= G4X_WM_LEVEL_HPLL) {
- wm_state->hpll_en = false;
- wm_state->hpll.cursor = USHRT_MAX;
- wm_state->hpll.plane = USHRT_MAX;
- wm_state->hpll.fbc = USHRT_MAX;
- }
-}
-
-static bool g4x_compute_fbc_en(const struct g4x_wm_state *wm_state,
- int level)
-{
- if (level < G4X_WM_LEVEL_SR)
- return false;
-
- if (level >= G4X_WM_LEVEL_SR &&
- wm_state->sr.fbc > g4x_fbc_fifo_size(G4X_WM_LEVEL_SR))
- return false;
-
- if (level >= G4X_WM_LEVEL_HPLL &&
- wm_state->hpll.fbc > g4x_fbc_fifo_size(G4X_WM_LEVEL_HPLL))
- return false;
-
- return true;
-}
-
-static int _g4x_compute_pipe_wm(struct intel_crtc_state *crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
- struct g4x_wm_state *wm_state = &crtc_state->wm.g4x.optimal;
- u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR);
- const struct g4x_pipe_wm *raw;
- enum plane_id plane_id;
- int level;
-
- level = G4X_WM_LEVEL_NORMAL;
- if (!g4x_raw_crtc_wm_is_valid(crtc_state, level))
- goto out;
-
- raw = &crtc_state->wm.g4x.raw[level];
- for_each_plane_id_on_crtc(crtc, plane_id)
- wm_state->wm.plane[plane_id] = raw->plane[plane_id];
-
- level = G4X_WM_LEVEL_SR;
- if (!g4x_raw_crtc_wm_is_valid(crtc_state, level))
- goto out;
-
- raw = &crtc_state->wm.g4x.raw[level];
- wm_state->sr.plane = raw->plane[PLANE_PRIMARY];
- wm_state->sr.cursor = raw->plane[PLANE_CURSOR];
- wm_state->sr.fbc = raw->fbc;
-
- wm_state->cxsr = active_planes == BIT(PLANE_PRIMARY);
-
- level = G4X_WM_LEVEL_HPLL;
- if (!g4x_raw_crtc_wm_is_valid(crtc_state, level))
- goto out;
-
- raw = &crtc_state->wm.g4x.raw[level];
- wm_state->hpll.plane = raw->plane[PLANE_PRIMARY];
- wm_state->hpll.cursor = raw->plane[PLANE_CURSOR];
- wm_state->hpll.fbc = raw->fbc;
-
- wm_state->hpll_en = wm_state->cxsr;
-
- level++;
-
- out:
- if (level == G4X_WM_LEVEL_NORMAL)
- return -EINVAL;
-
- /* invalidate the higher levels */
- g4x_invalidate_wms(crtc, wm_state, level);
-
- /*
- * Determine if the FBC watermark(s) can be used. IF
- * this isn't the case we prefer to disable the FBC
- * watermark(s) rather than disable the SR/HPLL
- * level(s) entirely. 'level-1' is the highest valid
- * level here.
- */
- wm_state->fbc_en = g4x_compute_fbc_en(wm_state, level - 1);
-
- return 0;
-}
-
-static int g4x_compute_pipe_wm(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct intel_crtc_state *crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
- const struct intel_plane_state *old_plane_state;
- const struct intel_plane_state *new_plane_state;
- struct intel_plane *plane;
- unsigned int dirty = 0;
- int i;
-
- for_each_oldnew_intel_plane_in_state(state, plane,
- old_plane_state,
- new_plane_state, i) {
- if (new_plane_state->hw.crtc != &crtc->base &&
- old_plane_state->hw.crtc != &crtc->base)
- continue;
-
- if (g4x_raw_plane_wm_compute(crtc_state, new_plane_state))
- dirty |= BIT(plane->id);
- }
-
- if (!dirty)
- return 0;
-
- return _g4x_compute_pipe_wm(crtc_state);
-}
-
-static int g4x_compute_intermediate_wm(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- struct intel_crtc_state *new_crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
- const struct intel_crtc_state *old_crtc_state =
- intel_atomic_get_old_crtc_state(state, crtc);
- struct g4x_wm_state *intermediate = &new_crtc_state->wm.g4x.intermediate;
- const struct g4x_wm_state *optimal = &new_crtc_state->wm.g4x.optimal;
- const struct g4x_wm_state *active = &old_crtc_state->wm.g4x.optimal;
- enum plane_id plane_id;
-
- if (!new_crtc_state->hw.active ||
- drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi)) {
- *intermediate = *optimal;
-
- intermediate->cxsr = false;
- intermediate->hpll_en = false;
- goto out;
- }
-
- intermediate->cxsr = optimal->cxsr && active->cxsr &&
- !new_crtc_state->disable_cxsr;
- intermediate->hpll_en = optimal->hpll_en && active->hpll_en &&
- !new_crtc_state->disable_cxsr;
- intermediate->fbc_en = optimal->fbc_en && active->fbc_en;
-
- for_each_plane_id_on_crtc(crtc, plane_id) {
- intermediate->wm.plane[plane_id] =
- max(optimal->wm.plane[plane_id],
- active->wm.plane[plane_id]);
-
- drm_WARN_ON(&dev_priv->drm, intermediate->wm.plane[plane_id] >
- g4x_plane_fifo_size(plane_id, G4X_WM_LEVEL_NORMAL));
- }
-
- intermediate->sr.plane = max(optimal->sr.plane,
- active->sr.plane);
- intermediate->sr.cursor = max(optimal->sr.cursor,
- active->sr.cursor);
- intermediate->sr.fbc = max(optimal->sr.fbc,
- active->sr.fbc);
-
- intermediate->hpll.plane = max(optimal->hpll.plane,
- active->hpll.plane);
- intermediate->hpll.cursor = max(optimal->hpll.cursor,
- active->hpll.cursor);
- intermediate->hpll.fbc = max(optimal->hpll.fbc,
- active->hpll.fbc);
-
- drm_WARN_ON(&dev_priv->drm,
- (intermediate->sr.plane >
- g4x_plane_fifo_size(PLANE_PRIMARY, G4X_WM_LEVEL_SR) ||
- intermediate->sr.cursor >
- g4x_plane_fifo_size(PLANE_CURSOR, G4X_WM_LEVEL_SR)) &&
- intermediate->cxsr);
- drm_WARN_ON(&dev_priv->drm,
- (intermediate->sr.plane >
- g4x_plane_fifo_size(PLANE_PRIMARY, G4X_WM_LEVEL_HPLL) ||
- intermediate->sr.cursor >
- g4x_plane_fifo_size(PLANE_CURSOR, G4X_WM_LEVEL_HPLL)) &&
- intermediate->hpll_en);
-
- drm_WARN_ON(&dev_priv->drm,
- intermediate->sr.fbc > g4x_fbc_fifo_size(1) &&
- intermediate->fbc_en && intermediate->cxsr);
- drm_WARN_ON(&dev_priv->drm,
- intermediate->hpll.fbc > g4x_fbc_fifo_size(2) &&
- intermediate->fbc_en && intermediate->hpll_en);
-
-out:
- /*
- * If our intermediate WM are identical to the final WM, then we can
- * omit the post-vblank programming; only update if it's different.
- */
- if (memcmp(intermediate, optimal, sizeof(*intermediate)) != 0)
- new_crtc_state->wm.need_postvbl_update = true;
-
- return 0;
-}
-
-static void g4x_merge_wm(struct drm_i915_private *dev_priv,
- struct g4x_wm_values *wm)
-{
- struct intel_crtc *crtc;
- int num_active_pipes = 0;
-
- wm->cxsr = true;
- wm->hpll_en = true;
- wm->fbc_en = true;
-
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- const struct g4x_wm_state *wm_state = &crtc->wm.active.g4x;
-
- if (!crtc->active)
- continue;
-
- if (!wm_state->cxsr)
- wm->cxsr = false;
- if (!wm_state->hpll_en)
- wm->hpll_en = false;
- if (!wm_state->fbc_en)
- wm->fbc_en = false;
-
- num_active_pipes++;
- }
-
- if (num_active_pipes != 1) {
- wm->cxsr = false;
- wm->hpll_en = false;
- wm->fbc_en = false;
- }
-
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- const struct g4x_wm_state *wm_state = &crtc->wm.active.g4x;
- enum pipe pipe = crtc->pipe;
-
- wm->pipe[pipe] = wm_state->wm;
- if (crtc->active && wm->cxsr)
- wm->sr = wm_state->sr;
- if (crtc->active && wm->hpll_en)
- wm->hpll = wm_state->hpll;
- }
-}
-
-static void g4x_program_watermarks(struct drm_i915_private *dev_priv)
-{
- struct g4x_wm_values *old_wm = &dev_priv->display.wm.g4x;
- struct g4x_wm_values new_wm = {};
-
- g4x_merge_wm(dev_priv, &new_wm);
-
- if (memcmp(old_wm, &new_wm, sizeof(new_wm)) == 0)
- return;
-
- if (is_disabling(old_wm->cxsr, new_wm.cxsr, true))
- _intel_set_memory_cxsr(dev_priv, false);
-
- g4x_write_wm_values(dev_priv, &new_wm);
-
- if (is_enabling(old_wm->cxsr, new_wm.cxsr, true))
- _intel_set_memory_cxsr(dev_priv, true);
-
- *old_wm = new_wm;
-}
-
-static void g4x_initial_watermarks(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- const struct intel_crtc_state *crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
-
- mutex_lock(&dev_priv->display.wm.wm_mutex);
- crtc->wm.active.g4x = crtc_state->wm.g4x.intermediate;
- g4x_program_watermarks(dev_priv);
- mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void g4x_optimize_watermarks(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- const struct intel_crtc_state *crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
-
- if (!crtc_state->wm.need_postvbl_update)
- return;
-
- mutex_lock(&dev_priv->display.wm.wm_mutex);
- crtc->wm.active.g4x = crtc_state->wm.g4x.optimal;
- g4x_program_watermarks(dev_priv);
- mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-/* latency must be in 0.1us units. */
-static unsigned int vlv_wm_method2(unsigned int pixel_rate,
- unsigned int htotal,
- unsigned int width,
- unsigned int cpp,
- unsigned int latency)
-{
- unsigned int ret;
-
- ret = intel_wm_method2(pixel_rate, htotal,
- width, cpp, latency);
- ret = DIV_ROUND_UP(ret, 64);
-
- return ret;
-}
-
-static void vlv_setup_wm_latency(struct drm_i915_private *dev_priv)
-{
- /* all latencies in usec */
- dev_priv->display.wm.pri_latency[VLV_WM_LEVEL_PM2] = 3;
-
- dev_priv->display.wm.max_level = VLV_WM_LEVEL_PM2;
-
- if (IS_CHERRYVIEW(dev_priv)) {
- dev_priv->display.wm.pri_latency[VLV_WM_LEVEL_PM5] = 12;
- dev_priv->display.wm.pri_latency[VLV_WM_LEVEL_DDR_DVFS] = 33;
-
- dev_priv->display.wm.max_level = VLV_WM_LEVEL_DDR_DVFS;
- }
-}
-
-static u16 vlv_compute_wm_level(const struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state,
- int level)
-{
- struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
- struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
- const struct drm_display_mode *pipe_mode =
- &crtc_state->hw.pipe_mode;
- unsigned int pixel_rate, htotal, cpp, width, wm;
-
- if (dev_priv->display.wm.pri_latency[level] == 0)
- return USHRT_MAX;
-
- if (!intel_wm_plane_visible(crtc_state, plane_state))
- return 0;
-
- cpp = plane_state->hw.fb->format->cpp[0];
- pixel_rate = crtc_state->pixel_rate;
- htotal = pipe_mode->crtc_htotal;
- width = drm_rect_width(&plane_state->uapi.src) >> 16;
-
- if (plane->id == PLANE_CURSOR) {
- /*
- * FIXME the formula gives values that are
- * too big for the cursor FIFO, and hence we
- * would never be able to use cursors. For
- * now just hardcode the watermark.
- */
- wm = 63;
- } else {
- wm = vlv_wm_method2(pixel_rate, htotal, width, cpp,
- dev_priv->display.wm.pri_latency[level] * 10);
- }
-
- return min_t(unsigned int, wm, USHRT_MAX);
-}
-
-static bool vlv_need_sprite0_fifo_workaround(unsigned int active_planes)
-{
- return (active_planes & (BIT(PLANE_SPRITE0) |
- BIT(PLANE_SPRITE1))) == BIT(PLANE_SPRITE1);
-}
-
-static int vlv_compute_fifo(struct intel_crtc_state *crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- const struct g4x_pipe_wm *raw =
- &crtc_state->wm.vlv.raw[VLV_WM_LEVEL_PM2];
- struct vlv_fifo_state *fifo_state = &crtc_state->wm.vlv.fifo_state;
- u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR);
- int num_active_planes = hweight8(active_planes);
- const int fifo_size = 511;
- int fifo_extra, fifo_left = fifo_size;
- int sprite0_fifo_extra = 0;
- unsigned int total_rate;
- enum plane_id plane_id;
-
- /*
- * When enabling sprite0 after sprite1 has already been enabled
- * we tend to get an underrun unless sprite0 already has some
- * FIFO space allcoated. Hence we always allocate at least one
- * cacheline for sprite0 whenever sprite1 is enabled.
- *
- * All other plane enable sequences appear immune to this problem.
- */
- if (vlv_need_sprite0_fifo_workaround(active_planes))
- sprite0_fifo_extra = 1;
-
- total_rate = raw->plane[PLANE_PRIMARY] +
- raw->plane[PLANE_SPRITE0] +
- raw->plane[PLANE_SPRITE1] +
- sprite0_fifo_extra;
-
- if (total_rate > fifo_size)
- return -EINVAL;
-
- if (total_rate == 0)
- total_rate = 1;
-
- for_each_plane_id_on_crtc(crtc, plane_id) {
- unsigned int rate;
-
- if ((active_planes & BIT(plane_id)) == 0) {
- fifo_state->plane[plane_id] = 0;
- continue;
- }
-
- rate = raw->plane[plane_id];
- fifo_state->plane[plane_id] = fifo_size * rate / total_rate;
- fifo_left -= fifo_state->plane[plane_id];
- }
-
- fifo_state->plane[PLANE_SPRITE0] += sprite0_fifo_extra;
- fifo_left -= sprite0_fifo_extra;
-
- fifo_state->plane[PLANE_CURSOR] = 63;
-
- fifo_extra = DIV_ROUND_UP(fifo_left, num_active_planes ?: 1);
-
- /* spread the remainder evenly */
- for_each_plane_id_on_crtc(crtc, plane_id) {
- int plane_extra;
-
- if (fifo_left == 0)
- break;
-
- if ((active_planes & BIT(plane_id)) == 0)
- continue;
-
- plane_extra = min(fifo_extra, fifo_left);
- fifo_state->plane[plane_id] += plane_extra;
- fifo_left -= plane_extra;
- }
-
- drm_WARN_ON(&dev_priv->drm, active_planes != 0 && fifo_left != 0);
-
- /* give it all to the first plane if none are active */
- if (active_planes == 0) {
- drm_WARN_ON(&dev_priv->drm, fifo_left != fifo_size);
- fifo_state->plane[PLANE_PRIMARY] = fifo_left;
- }
-
- return 0;
-}
-
-/* mark all levels starting from 'level' as invalid */
-static void vlv_invalidate_wms(struct intel_crtc *crtc,
- struct vlv_wm_state *wm_state, int level)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-
- for (; level < intel_wm_num_levels(dev_priv); level++) {
- enum plane_id plane_id;
-
- for_each_plane_id_on_crtc(crtc, plane_id)
- wm_state->wm[level].plane[plane_id] = USHRT_MAX;
-
- wm_state->sr[level].cursor = USHRT_MAX;
- wm_state->sr[level].plane = USHRT_MAX;
- }
-}
-
-static u16 vlv_invert_wm_value(u16 wm, u16 fifo_size)
-{
- if (wm > fifo_size)
- return USHRT_MAX;
- else
- return fifo_size - wm;
-}
-
-/*
- * Starting from 'level' set all higher
- * levels to 'value' in the "raw" watermarks.
- */
-static bool vlv_raw_plane_wm_set(struct intel_crtc_state *crtc_state,
- int level, enum plane_id plane_id, u16 value)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
- int num_levels = intel_wm_num_levels(dev_priv);
- bool dirty = false;
-
- for (; level < num_levels; level++) {
- struct g4x_pipe_wm *raw = &crtc_state->wm.vlv.raw[level];
-
- dirty |= raw->plane[plane_id] != value;
- raw->plane[plane_id] = value;
- }
-
- return dirty;
-}
-
-static bool vlv_raw_plane_wm_compute(struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state)
-{
- struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
- struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
- enum plane_id plane_id = plane->id;
- int num_levels = intel_wm_num_levels(to_i915(plane->base.dev));
- int level;
- bool dirty = false;
-
- if (!intel_wm_plane_visible(crtc_state, plane_state)) {
- dirty |= vlv_raw_plane_wm_set(crtc_state, 0, plane_id, 0);
- goto out;
- }
-
- for (level = 0; level < num_levels; level++) {
- struct g4x_pipe_wm *raw = &crtc_state->wm.vlv.raw[level];
- int wm = vlv_compute_wm_level(crtc_state, plane_state, level);
- int max_wm = plane_id == PLANE_CURSOR ? 63 : 511;
-
- if (wm > max_wm)
- break;
-
- dirty |= raw->plane[plane_id] != wm;
- raw->plane[plane_id] = wm;
- }
-
- /* mark all higher levels as invalid */
- dirty |= vlv_raw_plane_wm_set(crtc_state, level, plane_id, USHRT_MAX);
-
-out:
- if (dirty)
- drm_dbg_kms(&dev_priv->drm,
- "%s watermarks: PM2=%d, PM5=%d, DDR DVFS=%d\n",
- plane->base.name,
- crtc_state->wm.vlv.raw[VLV_WM_LEVEL_PM2].plane[plane_id],
- crtc_state->wm.vlv.raw[VLV_WM_LEVEL_PM5].plane[plane_id],
- crtc_state->wm.vlv.raw[VLV_WM_LEVEL_DDR_DVFS].plane[plane_id]);
-
- return dirty;
-}
-
-static bool vlv_raw_plane_wm_is_valid(const struct intel_crtc_state *crtc_state,
- enum plane_id plane_id, int level)
-{
- const struct g4x_pipe_wm *raw =
- &crtc_state->wm.vlv.raw[level];
- const struct vlv_fifo_state *fifo_state =
- &crtc_state->wm.vlv.fifo_state;
-
- return raw->plane[plane_id] <= fifo_state->plane[plane_id];
-}
-
-static bool vlv_raw_crtc_wm_is_valid(const struct intel_crtc_state *crtc_state, int level)
-{
- return vlv_raw_plane_wm_is_valid(crtc_state, PLANE_PRIMARY, level) &&
- vlv_raw_plane_wm_is_valid(crtc_state, PLANE_SPRITE0, level) &&
- vlv_raw_plane_wm_is_valid(crtc_state, PLANE_SPRITE1, level) &&
- vlv_raw_plane_wm_is_valid(crtc_state, PLANE_CURSOR, level);
-}
-
-static int _vlv_compute_pipe_wm(struct intel_crtc_state *crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- struct vlv_wm_state *wm_state = &crtc_state->wm.vlv.optimal;
- const struct vlv_fifo_state *fifo_state =
- &crtc_state->wm.vlv.fifo_state;
- u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR);
- int num_active_planes = hweight8(active_planes);
- enum plane_id plane_id;
- int level;
-
- /* initially allow all levels */
- wm_state->num_levels = intel_wm_num_levels(dev_priv);
- /*
- * Note that enabling cxsr with no primary/sprite planes
- * enabled can wedge the pipe. Hence we only allow cxsr
- * with exactly one enabled primary/sprite plane.
- */
- wm_state->cxsr = crtc->pipe != PIPE_C && num_active_planes == 1;
-
- for (level = 0; level < wm_state->num_levels; level++) {
- const struct g4x_pipe_wm *raw = &crtc_state->wm.vlv.raw[level];
- const int sr_fifo_size = INTEL_NUM_PIPES(dev_priv) * 512 - 1;
-
- if (!vlv_raw_crtc_wm_is_valid(crtc_state, level))
- break;
-
- for_each_plane_id_on_crtc(crtc, plane_id) {
- wm_state->wm[level].plane[plane_id] =
- vlv_invert_wm_value(raw->plane[plane_id],
- fifo_state->plane[plane_id]);
- }
-
- wm_state->sr[level].plane =
- vlv_invert_wm_value(max3(raw->plane[PLANE_PRIMARY],
- raw->plane[PLANE_SPRITE0],
- raw->plane[PLANE_SPRITE1]),
- sr_fifo_size);
-
- wm_state->sr[level].cursor =
- vlv_invert_wm_value(raw->plane[PLANE_CURSOR],
- 63);
- }
-
- if (level == 0)
- return -EINVAL;
-
- /* limit to only levels we can actually handle */
- wm_state->num_levels = level;
-
- /* invalidate the higher levels */
- vlv_invalidate_wms(crtc, wm_state, level);
-
- return 0;
-}
-
-static int vlv_compute_pipe_wm(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct intel_crtc_state *crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
- bool needs_modeset = drm_atomic_crtc_needs_modeset(&crtc_state->uapi);
- const struct intel_plane_state *old_plane_state;
- const struct intel_plane_state *new_plane_state;
- struct intel_plane *plane;
- unsigned int dirty = 0;
- int i;
-
- for_each_oldnew_intel_plane_in_state(state, plane,
- old_plane_state,
- new_plane_state, i) {
- if (new_plane_state->hw.crtc != &crtc->base &&
- old_plane_state->hw.crtc != &crtc->base)
- continue;
-
- if (vlv_raw_plane_wm_compute(crtc_state, new_plane_state))
- dirty |= BIT(plane->id);
- }
-
- /*
- * DSPARB registers may have been reset due to the
- * power well being turned off. Make sure we restore
- * them to a consistent state even if no primary/sprite
- * planes are initially active. We also force a FIFO
- * recomputation so that we are sure to sanitize the
- * FIFO setting we took over from the BIOS even if there
- * are no active planes on the crtc.
- */
- if (needs_modeset)
- dirty = ~0;
-
- if (!dirty)
- return 0;
-
- /* cursor changes don't warrant a FIFO recompute */
- if (dirty & ~BIT(PLANE_CURSOR)) {
- const struct intel_crtc_state *old_crtc_state =
- intel_atomic_get_old_crtc_state(state, crtc);
- const struct vlv_fifo_state *old_fifo_state =
- &old_crtc_state->wm.vlv.fifo_state;
- const struct vlv_fifo_state *new_fifo_state =
- &crtc_state->wm.vlv.fifo_state;
- int ret;
-
- ret = vlv_compute_fifo(crtc_state);
- if (ret)
- return ret;
-
- if (needs_modeset ||
- memcmp(old_fifo_state, new_fifo_state,
- sizeof(*new_fifo_state)) != 0)
- crtc_state->fifo_changed = true;
- }
-
- return _vlv_compute_pipe_wm(crtc_state);
-}
-
-#define VLV_FIFO(plane, value) \
- (((value) << DSPARB_ ## plane ## _SHIFT_VLV) & DSPARB_ ## plane ## _MASK_VLV)
-
-static void vlv_atomic_update_fifo(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- struct intel_uncore *uncore = &dev_priv->uncore;
- const struct intel_crtc_state *crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
- const struct vlv_fifo_state *fifo_state =
- &crtc_state->wm.vlv.fifo_state;
- int sprite0_start, sprite1_start, fifo_size;
- u32 dsparb, dsparb2, dsparb3;
-
- if (!crtc_state->fifo_changed)
- return;
-
- sprite0_start = fifo_state->plane[PLANE_PRIMARY];
- sprite1_start = fifo_state->plane[PLANE_SPRITE0] + sprite0_start;
- fifo_size = fifo_state->plane[PLANE_SPRITE1] + sprite1_start;
-
- drm_WARN_ON(&dev_priv->drm, fifo_state->plane[PLANE_CURSOR] != 63);
- drm_WARN_ON(&dev_priv->drm, fifo_size != 511);
-
- trace_vlv_fifo_size(crtc, sprite0_start, sprite1_start, fifo_size);
-
- /*
- * uncore.lock serves a double purpose here. It allows us to
- * use the less expensive I915_{READ,WRITE}_FW() functions, and
- * it protects the DSPARB registers from getting clobbered by
- * parallel updates from multiple pipes.
- *
- * intel_pipe_update_start() has already disabled interrupts
- * for us, so a plain spin_lock() is sufficient here.
- */
- spin_lock(&uncore->lock);
-
- switch (crtc->pipe) {
- case PIPE_A:
- dsparb = intel_uncore_read_fw(uncore, DSPARB);
- dsparb2 = intel_uncore_read_fw(uncore, DSPARB2);
-
- dsparb &= ~(VLV_FIFO(SPRITEA, 0xff) |
- VLV_FIFO(SPRITEB, 0xff));
- dsparb |= (VLV_FIFO(SPRITEA, sprite0_start) |
- VLV_FIFO(SPRITEB, sprite1_start));
-
- dsparb2 &= ~(VLV_FIFO(SPRITEA_HI, 0x1) |
- VLV_FIFO(SPRITEB_HI, 0x1));
- dsparb2 |= (VLV_FIFO(SPRITEA_HI, sprite0_start >> 8) |
- VLV_FIFO(SPRITEB_HI, sprite1_start >> 8));
-
- intel_uncore_write_fw(uncore, DSPARB, dsparb);
- intel_uncore_write_fw(uncore, DSPARB2, dsparb2);
- break;
- case PIPE_B:
- dsparb = intel_uncore_read_fw(uncore, DSPARB);
- dsparb2 = intel_uncore_read_fw(uncore, DSPARB2);
-
- dsparb &= ~(VLV_FIFO(SPRITEC, 0xff) |
- VLV_FIFO(SPRITED, 0xff));
- dsparb |= (VLV_FIFO(SPRITEC, sprite0_start) |
- VLV_FIFO(SPRITED, sprite1_start));
-
- dsparb2 &= ~(VLV_FIFO(SPRITEC_HI, 0xff) |
- VLV_FIFO(SPRITED_HI, 0xff));
- dsparb2 |= (VLV_FIFO(SPRITEC_HI, sprite0_start >> 8) |
- VLV_FIFO(SPRITED_HI, sprite1_start >> 8));
-
- intel_uncore_write_fw(uncore, DSPARB, dsparb);
- intel_uncore_write_fw(uncore, DSPARB2, dsparb2);
- break;
- case PIPE_C:
- dsparb3 = intel_uncore_read_fw(uncore, DSPARB3);
- dsparb2 = intel_uncore_read_fw(uncore, DSPARB2);
-
- dsparb3 &= ~(VLV_FIFO(SPRITEE, 0xff) |
- VLV_FIFO(SPRITEF, 0xff));
- dsparb3 |= (VLV_FIFO(SPRITEE, sprite0_start) |
- VLV_FIFO(SPRITEF, sprite1_start));
-
- dsparb2 &= ~(VLV_FIFO(SPRITEE_HI, 0xff) |
- VLV_FIFO(SPRITEF_HI, 0xff));
- dsparb2 |= (VLV_FIFO(SPRITEE_HI, sprite0_start >> 8) |
- VLV_FIFO(SPRITEF_HI, sprite1_start >> 8));
-
- intel_uncore_write_fw(uncore, DSPARB3, dsparb3);
- intel_uncore_write_fw(uncore, DSPARB2, dsparb2);
- break;
- default:
- break;
- }
-
- intel_uncore_posting_read_fw(uncore, DSPARB);
-
- spin_unlock(&uncore->lock);
-}
-
-#undef VLV_FIFO
-
-static int vlv_compute_intermediate_wm(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct intel_crtc_state *new_crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
- const struct intel_crtc_state *old_crtc_state =
- intel_atomic_get_old_crtc_state(state, crtc);
- struct vlv_wm_state *intermediate = &new_crtc_state->wm.vlv.intermediate;
- const struct vlv_wm_state *optimal = &new_crtc_state->wm.vlv.optimal;
- const struct vlv_wm_state *active = &old_crtc_state->wm.vlv.optimal;
- int level;
-
- if (!new_crtc_state->hw.active ||
- drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi)) {
- *intermediate = *optimal;
-
- intermediate->cxsr = false;
- goto out;
- }
-
- intermediate->num_levels = min(optimal->num_levels, active->num_levels);
- intermediate->cxsr = optimal->cxsr && active->cxsr &&
- !new_crtc_state->disable_cxsr;
-
- for (level = 0; level < intermediate->num_levels; level++) {
- enum plane_id plane_id;
-
- for_each_plane_id_on_crtc(crtc, plane_id) {
- intermediate->wm[level].plane[plane_id] =
- min(optimal->wm[level].plane[plane_id],
- active->wm[level].plane[plane_id]);
- }
-
- intermediate->sr[level].plane = min(optimal->sr[level].plane,
- active->sr[level].plane);
- intermediate->sr[level].cursor = min(optimal->sr[level].cursor,
- active->sr[level].cursor);
- }
-
- vlv_invalidate_wms(crtc, intermediate, level);
-
-out:
- /*
- * If our intermediate WM are identical to the final WM, then we can
- * omit the post-vblank programming; only update if it's different.
- */
- if (memcmp(intermediate, optimal, sizeof(*intermediate)) != 0)
- new_crtc_state->wm.need_postvbl_update = true;
-
- return 0;
-}
-
-static void vlv_merge_wm(struct drm_i915_private *dev_priv,
- struct vlv_wm_values *wm)
-{
- struct intel_crtc *crtc;
- int num_active_pipes = 0;
-
- wm->level = dev_priv->display.wm.max_level;
- wm->cxsr = true;
-
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- const struct vlv_wm_state *wm_state = &crtc->wm.active.vlv;
-
- if (!crtc->active)
- continue;
-
- if (!wm_state->cxsr)
- wm->cxsr = false;
-
- num_active_pipes++;
- wm->level = min_t(int, wm->level, wm_state->num_levels - 1);
- }
-
- if (num_active_pipes != 1)
- wm->cxsr = false;
-
- if (num_active_pipes > 1)
- wm->level = VLV_WM_LEVEL_PM2;
-
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- const struct vlv_wm_state *wm_state = &crtc->wm.active.vlv;
- enum pipe pipe = crtc->pipe;
-
- wm->pipe[pipe] = wm_state->wm[wm->level];
- if (crtc->active && wm->cxsr)
- wm->sr = wm_state->sr[wm->level];
-
- wm->ddl[pipe].plane[PLANE_PRIMARY] = DDL_PRECISION_HIGH | 2;
- wm->ddl[pipe].plane[PLANE_SPRITE0] = DDL_PRECISION_HIGH | 2;
- wm->ddl[pipe].plane[PLANE_SPRITE1] = DDL_PRECISION_HIGH | 2;
- wm->ddl[pipe].plane[PLANE_CURSOR] = DDL_PRECISION_HIGH | 2;
- }
-}
-
-static void vlv_program_watermarks(struct drm_i915_private *dev_priv)
-{
- struct vlv_wm_values *old_wm = &dev_priv->display.wm.vlv;
- struct vlv_wm_values new_wm = {};
-
- vlv_merge_wm(dev_priv, &new_wm);
-
- if (memcmp(old_wm, &new_wm, sizeof(new_wm)) == 0)
- return;
-
- if (is_disabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_DDR_DVFS))
- chv_set_memory_dvfs(dev_priv, false);
-
- if (is_disabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_PM5))
- chv_set_memory_pm5(dev_priv, false);
-
- if (is_disabling(old_wm->cxsr, new_wm.cxsr, true))
- _intel_set_memory_cxsr(dev_priv, false);
-
- vlv_write_wm_values(dev_priv, &new_wm);
-
- if (is_enabling(old_wm->cxsr, new_wm.cxsr, true))
- _intel_set_memory_cxsr(dev_priv, true);
-
- if (is_enabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_PM5))
- chv_set_memory_pm5(dev_priv, true);
-
- if (is_enabling(old_wm->level, new_wm.level, VLV_WM_LEVEL_DDR_DVFS))
- chv_set_memory_dvfs(dev_priv, true);
-
- *old_wm = new_wm;
-}
-
-static void vlv_initial_watermarks(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- const struct intel_crtc_state *crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
-
- mutex_lock(&dev_priv->display.wm.wm_mutex);
- crtc->wm.active.vlv = crtc_state->wm.vlv.intermediate;
- vlv_program_watermarks(dev_priv);
- mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void vlv_optimize_watermarks(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- const struct intel_crtc_state *crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
-
- if (!crtc_state->wm.need_postvbl_update)
- return;
-
- mutex_lock(&dev_priv->display.wm.wm_mutex);
- crtc->wm.active.vlv = crtc_state->wm.vlv.optimal;
- vlv_program_watermarks(dev_priv);
- mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void i965_update_wm(struct drm_i915_private *dev_priv)
-{
- struct intel_crtc *crtc;
- int srwm = 1;
- int cursor_sr = 16;
- bool cxsr_enabled;
-
- /* Calc sr entries for one plane configs */
- crtc = single_enabled_crtc(dev_priv);
- if (crtc) {
- /* self-refresh has much higher latency */
- static const int sr_latency_ns = 12000;
- const struct drm_display_mode *pipe_mode =
- &crtc->config->hw.pipe_mode;
- const struct drm_framebuffer *fb =
- crtc->base.primary->state->fb;
- int pixel_rate = crtc->config->pixel_rate;
- int htotal = pipe_mode->crtc_htotal;
- int width = drm_rect_width(&crtc->base.primary->state->src) >> 16;
- int cpp = fb->format->cpp[0];
- int entries;
-
- entries = intel_wm_method2(pixel_rate, htotal,
- width, cpp, sr_latency_ns / 100);
- entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE);
- srwm = I965_FIFO_SIZE - entries;
- if (srwm < 0)
- srwm = 1;
- srwm &= 0x1ff;
- drm_dbg_kms(&dev_priv->drm,
- "self-refresh entries: %d, wm: %d\n",
- entries, srwm);
-
- entries = intel_wm_method2(pixel_rate, htotal,
- crtc->base.cursor->state->crtc_w, 4,
- sr_latency_ns / 100);
- entries = DIV_ROUND_UP(entries,
- i965_cursor_wm_info.cacheline_size) +
- i965_cursor_wm_info.guard_size;
-
- cursor_sr = i965_cursor_wm_info.fifo_size - entries;
- if (cursor_sr > i965_cursor_wm_info.max_wm)
- cursor_sr = i965_cursor_wm_info.max_wm;
-
- drm_dbg_kms(&dev_priv->drm,
- "self-refresh watermark: display plane %d "
- "cursor %d\n", srwm, cursor_sr);
-
- cxsr_enabled = true;
- } else {
- cxsr_enabled = false;
- /* Turn off self refresh if both pipes are enabled */
- intel_set_memory_cxsr(dev_priv, false);
- }
-
- drm_dbg_kms(&dev_priv->drm,
- "Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
- srwm);
-
- /* 965 has limitations... */
- intel_uncore_write(&dev_priv->uncore, DSPFW1, FW_WM(srwm, SR) |
- FW_WM(8, CURSORB) |
- FW_WM(8, PLANEB) |
- FW_WM(8, PLANEA));
- intel_uncore_write(&dev_priv->uncore, DSPFW2, FW_WM(8, CURSORA) |
- FW_WM(8, PLANEC_OLD));
- /* update cursor SR watermark */
- intel_uncore_write(&dev_priv->uncore, DSPFW3, FW_WM(cursor_sr, CURSOR_SR));
-
- if (cxsr_enabled)
- intel_set_memory_cxsr(dev_priv, true);
-}
-
-#undef FW_WM
-
-static struct intel_crtc *intel_crtc_for_plane(struct drm_i915_private *i915,
- enum i9xx_plane_id i9xx_plane)
-{
- struct intel_plane *plane;
-
- for_each_intel_plane(&i915->drm, plane) {
- if (plane->id == PLANE_PRIMARY &&
- plane->i9xx_plane == i9xx_plane)
- return intel_crtc_for_pipe(i915, plane->pipe);
- }
-
- return NULL;
-}
-
-static void i9xx_update_wm(struct drm_i915_private *dev_priv)
-{
- const struct intel_watermark_params *wm_info;
- u32 fwater_lo;
- u32 fwater_hi;
- int cwm, srwm = 1;
- int fifo_size;
- int planea_wm, planeb_wm;
- struct intel_crtc *crtc;
-
- if (IS_I945GM(dev_priv))
- wm_info = &i945_wm_info;
- else if (DISPLAY_VER(dev_priv) != 2)
- wm_info = &i915_wm_info;
- else
- wm_info = &i830_a_wm_info;
-
- if (DISPLAY_VER(dev_priv) == 2)
- fifo_size = i830_get_fifo_size(dev_priv, PLANE_A);
- else
- fifo_size = i9xx_get_fifo_size(dev_priv, PLANE_A);
- crtc = intel_crtc_for_plane(dev_priv, PLANE_A);
- if (intel_crtc_active(crtc)) {
- const struct drm_framebuffer *fb =
- crtc->base.primary->state->fb;
- int cpp;
-
- if (DISPLAY_VER(dev_priv) == 2)
- cpp = 4;
- else
- cpp = fb->format->cpp[0];
-
- planea_wm = intel_calculate_wm(crtc->config->pixel_rate,
- wm_info, fifo_size, cpp,
- pessimal_latency_ns);
- } else {
- planea_wm = fifo_size - wm_info->guard_size;
- if (planea_wm > (long)wm_info->max_wm)
- planea_wm = wm_info->max_wm;
- }
-
- if (DISPLAY_VER(dev_priv) == 2)
- wm_info = &i830_bc_wm_info;
-
- if (DISPLAY_VER(dev_priv) == 2)
- fifo_size = i830_get_fifo_size(dev_priv, PLANE_B);
- else
- fifo_size = i9xx_get_fifo_size(dev_priv, PLANE_B);
- crtc = intel_crtc_for_plane(dev_priv, PLANE_B);
- if (intel_crtc_active(crtc)) {
- const struct drm_framebuffer *fb =
- crtc->base.primary->state->fb;
- int cpp;
-
- if (DISPLAY_VER(dev_priv) == 2)
- cpp = 4;
- else
- cpp = fb->format->cpp[0];
-
- planeb_wm = intel_calculate_wm(crtc->config->pixel_rate,
- wm_info, fifo_size, cpp,
- pessimal_latency_ns);
- } else {
- planeb_wm = fifo_size - wm_info->guard_size;
- if (planeb_wm > (long)wm_info->max_wm)
- planeb_wm = wm_info->max_wm;
- }
-
- drm_dbg_kms(&dev_priv->drm,
- "FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
-
- crtc = single_enabled_crtc(dev_priv);
- if (IS_I915GM(dev_priv) && crtc) {
- struct drm_i915_gem_object *obj;
-
- obj = intel_fb_obj(crtc->base.primary->state->fb);
-
- /* self-refresh seems busted with untiled */
- if (!i915_gem_object_is_tiled(obj))
- crtc = NULL;
- }
-
- /*
- * Overlay gets an aggressive default since video jitter is bad.
- */
- cwm = 2;
-
- /* Play safe and disable self-refresh before adjusting watermarks. */
- intel_set_memory_cxsr(dev_priv, false);
-
- /* Calc sr entries for one plane configs */
- if (HAS_FW_BLC(dev_priv) && crtc) {
- /* self-refresh has much higher latency */
- static const int sr_latency_ns = 6000;
- const struct drm_display_mode *pipe_mode =
- &crtc->config->hw.pipe_mode;
- const struct drm_framebuffer *fb =
- crtc->base.primary->state->fb;
- int pixel_rate = crtc->config->pixel_rate;
- int htotal = pipe_mode->crtc_htotal;
- int width = drm_rect_width(&crtc->base.primary->state->src) >> 16;
- int cpp;
- int entries;
-
- if (IS_I915GM(dev_priv) || IS_I945GM(dev_priv))
- cpp = 4;
- else
- cpp = fb->format->cpp[0];
-
- entries = intel_wm_method2(pixel_rate, htotal, width, cpp,
- sr_latency_ns / 100);
- entries = DIV_ROUND_UP(entries, wm_info->cacheline_size);
- drm_dbg_kms(&dev_priv->drm,
- "self-refresh entries: %d\n", entries);
- srwm = wm_info->fifo_size - entries;
- if (srwm < 0)
- srwm = 1;
-
- if (IS_I945G(dev_priv) || IS_I945GM(dev_priv))
- intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF,
- FW_BLC_SELF_FIFO_MASK | (srwm & 0xff));
- else
- intel_uncore_write(&dev_priv->uncore, FW_BLC_SELF, srwm & 0x3f);
- }
-
- drm_dbg_kms(&dev_priv->drm,
- "Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
- planea_wm, planeb_wm, cwm, srwm);
-
- fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
- fwater_hi = (cwm & 0x1f);
-
- /* Set request length to 8 cachelines per fetch */
- fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
- fwater_hi = fwater_hi | (1 << 8);
-
- intel_uncore_write(&dev_priv->uncore, FW_BLC, fwater_lo);
- intel_uncore_write(&dev_priv->uncore, FW_BLC2, fwater_hi);
-
- if (crtc)
- intel_set_memory_cxsr(dev_priv, true);
-}
-
-static void i845_update_wm(struct drm_i915_private *dev_priv)
-{
- struct intel_crtc *crtc;
- u32 fwater_lo;
- int planea_wm;
-
- crtc = single_enabled_crtc(dev_priv);
- if (crtc == NULL)
- return;
-
- planea_wm = intel_calculate_wm(crtc->config->pixel_rate,
- &i845_wm_info,
- i845_get_fifo_size(dev_priv, PLANE_A),
- 4, pessimal_latency_ns);
- fwater_lo = intel_uncore_read(&dev_priv->uncore, FW_BLC) & ~0xfff;
- fwater_lo |= (3<<8) | planea_wm;
-
- drm_dbg_kms(&dev_priv->drm,
- "Setting FIFO watermarks - A: %d\n", planea_wm);
-
- intel_uncore_write(&dev_priv->uncore, FW_BLC, fwater_lo);
-}
-
-/* latency must be in 0.1us units. */
-static unsigned int ilk_wm_method1(unsigned int pixel_rate,
- unsigned int cpp,
- unsigned int latency)
-{
- unsigned int ret;
-
- ret = intel_wm_method1(pixel_rate, cpp, latency);
- ret = DIV_ROUND_UP(ret, 64) + 2;
-
- return ret;
-}
-
-/* latency must be in 0.1us units. */
-static unsigned int ilk_wm_method2(unsigned int pixel_rate,
- unsigned int htotal,
- unsigned int width,
- unsigned int cpp,
- unsigned int latency)
-{
- unsigned int ret;
-
- ret = intel_wm_method2(pixel_rate, htotal,
- width, cpp, latency);
- ret = DIV_ROUND_UP(ret, 64) + 2;
-
- return ret;
-}
-
-static u32 ilk_wm_fbc(u32 pri_val, u32 horiz_pixels, u8 cpp)
-{
- /*
- * Neither of these should be possible since this function shouldn't be
- * called if the CRTC is off or the plane is invisible. But let's be
- * extra paranoid to avoid a potential divide-by-zero if we screw up
- * elsewhere in the driver.
- */
- if (WARN_ON(!cpp))
- return 0;
- if (WARN_ON(!horiz_pixels))
- return 0;
-
- return DIV_ROUND_UP(pri_val * 64, horiz_pixels * cpp) + 2;
-}
-
-struct ilk_wm_maximums {
- u16 pri;
- u16 spr;
- u16 cur;
- u16 fbc;
-};
-
-/*
- * For both WM_PIPE and WM_LP.
- * mem_value must be in 0.1us units.
- */
-static u32 ilk_compute_pri_wm(const struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state,
- u32 mem_value, bool is_lp)
-{
- u32 method1, method2;
- int cpp;
-
- if (mem_value == 0)
- return U32_MAX;
-
- if (!intel_wm_plane_visible(crtc_state, plane_state))
- return 0;
-
- cpp = plane_state->hw.fb->format->cpp[0];
-
- method1 = ilk_wm_method1(crtc_state->pixel_rate, cpp, mem_value);
-
- if (!is_lp)
- return method1;
-
- method2 = ilk_wm_method2(crtc_state->pixel_rate,
- crtc_state->hw.pipe_mode.crtc_htotal,
- drm_rect_width(&plane_state->uapi.src) >> 16,
- cpp, mem_value);
-
- return min(method1, method2);
-}
-
-/*
- * For both WM_PIPE and WM_LP.
- * mem_value must be in 0.1us units.
- */
-static u32 ilk_compute_spr_wm(const struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state,
- u32 mem_value)
-{
- u32 method1, method2;
- int cpp;
-
- if (mem_value == 0)
- return U32_MAX;
-
- if (!intel_wm_plane_visible(crtc_state, plane_state))
- return 0;
-
- cpp = plane_state->hw.fb->format->cpp[0];
-
- method1 = ilk_wm_method1(crtc_state->pixel_rate, cpp, mem_value);
- method2 = ilk_wm_method2(crtc_state->pixel_rate,
- crtc_state->hw.pipe_mode.crtc_htotal,
- drm_rect_width(&plane_state->uapi.src) >> 16,
- cpp, mem_value);
- return min(method1, method2);
-}
-
-/*
- * For both WM_PIPE and WM_LP.
- * mem_value must be in 0.1us units.
- */
-static u32 ilk_compute_cur_wm(const struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state,
- u32 mem_value)
-{
- int cpp;
-
- if (mem_value == 0)
- return U32_MAX;
-
- if (!intel_wm_plane_visible(crtc_state, plane_state))
- return 0;
-
- cpp = plane_state->hw.fb->format->cpp[0];
-
- return ilk_wm_method2(crtc_state->pixel_rate,
- crtc_state->hw.pipe_mode.crtc_htotal,
- drm_rect_width(&plane_state->uapi.src) >> 16,
- cpp, mem_value);
-}
-
-/* Only for WM_LP. */
-static u32 ilk_compute_fbc_wm(const struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state,
- u32 pri_val)
-{
- int cpp;
-
- if (!intel_wm_plane_visible(crtc_state, plane_state))
- return 0;
-
- cpp = plane_state->hw.fb->format->cpp[0];
-
- return ilk_wm_fbc(pri_val, drm_rect_width(&plane_state->uapi.src) >> 16,
- cpp);
-}
-
-static unsigned int
-ilk_display_fifo_size(const struct drm_i915_private *dev_priv)
-{
- if (DISPLAY_VER(dev_priv) >= 8)
- return 3072;
- else if (DISPLAY_VER(dev_priv) >= 7)
- return 768;
- else
- return 512;
-}
-
-static unsigned int
-ilk_plane_wm_reg_max(const struct drm_i915_private *dev_priv,
- int level, bool is_sprite)
-{
- if (DISPLAY_VER(dev_priv) >= 8)
- /* BDW primary/sprite plane watermarks */
- return level == 0 ? 255 : 2047;
- else if (DISPLAY_VER(dev_priv) >= 7)
- /* IVB/HSW primary/sprite plane watermarks */
- return level == 0 ? 127 : 1023;
- else if (!is_sprite)
- /* ILK/SNB primary plane watermarks */
- return level == 0 ? 127 : 511;
- else
- /* ILK/SNB sprite plane watermarks */
- return level == 0 ? 63 : 255;
-}
-
-static unsigned int
-ilk_cursor_wm_reg_max(const struct drm_i915_private *dev_priv, int level)
-{
- if (DISPLAY_VER(dev_priv) >= 7)
- return level == 0 ? 63 : 255;
- else
- return level == 0 ? 31 : 63;
-}
-
-static unsigned int ilk_fbc_wm_reg_max(const struct drm_i915_private *dev_priv)
-{
- if (DISPLAY_VER(dev_priv) >= 8)
- return 31;
- else
- return 15;
-}
-
-/* Calculate the maximum primary/sprite plane watermark */
-static unsigned int ilk_plane_wm_max(const struct drm_i915_private *dev_priv,
- int level,
- const struct intel_wm_config *config,
- enum intel_ddb_partitioning ddb_partitioning,
- bool is_sprite)
-{
- unsigned int fifo_size = ilk_display_fifo_size(dev_priv);
-
- /* if sprites aren't enabled, sprites get nothing */
- if (is_sprite && !config->sprites_enabled)
- return 0;
-
- /* HSW allows LP1+ watermarks even with multiple pipes */
- if (level == 0 || config->num_pipes_active > 1) {
- fifo_size /= INTEL_NUM_PIPES(dev_priv);
-
- /*
- * For some reason the non self refresh
- * FIFO size is only half of the self
- * refresh FIFO size on ILK/SNB.
- */
- if (DISPLAY_VER(dev_priv) <= 6)
- fifo_size /= 2;
- }
-
- if (config->sprites_enabled) {
- /* level 0 is always calculated with 1:1 split */
- if (level > 0 && ddb_partitioning == INTEL_DDB_PART_5_6) {
- if (is_sprite)
- fifo_size *= 5;
- fifo_size /= 6;
- } else {
- fifo_size /= 2;
- }
- }
-
- /* clamp to max that the registers can hold */
- return min(fifo_size, ilk_plane_wm_reg_max(dev_priv, level, is_sprite));
-}
-
-/* Calculate the maximum cursor plane watermark */
-static unsigned int ilk_cursor_wm_max(const struct drm_i915_private *dev_priv,
- int level,
- const struct intel_wm_config *config)
-{
- /* HSW LP1+ watermarks w/ multiple pipes */
- if (level > 0 && config->num_pipes_active > 1)
- return 64;
-
- /* otherwise just report max that registers can hold */
- return ilk_cursor_wm_reg_max(dev_priv, level);
-}
-
-static void ilk_compute_wm_maximums(const struct drm_i915_private *dev_priv,
- int level,
- const struct intel_wm_config *config,
- enum intel_ddb_partitioning ddb_partitioning,
- struct ilk_wm_maximums *max)
-{
- max->pri = ilk_plane_wm_max(dev_priv, level, config, ddb_partitioning, false);
- max->spr = ilk_plane_wm_max(dev_priv, level, config, ddb_partitioning, true);
- max->cur = ilk_cursor_wm_max(dev_priv, level, config);
- max->fbc = ilk_fbc_wm_reg_max(dev_priv);
-}
-
-static void ilk_compute_wm_reg_maximums(const struct drm_i915_private *dev_priv,
- int level,
- struct ilk_wm_maximums *max)
-{
- max->pri = ilk_plane_wm_reg_max(dev_priv, level, false);
- max->spr = ilk_plane_wm_reg_max(dev_priv, level, true);
- max->cur = ilk_cursor_wm_reg_max(dev_priv, level);
- max->fbc = ilk_fbc_wm_reg_max(dev_priv);
-}
-
-static bool ilk_validate_wm_level(int level,
- const struct ilk_wm_maximums *max,
- struct intel_wm_level *result)
-{
- bool ret;
-
- /* already determined to be invalid? */
- if (!result->enable)
- return false;
-
- result->enable = result->pri_val <= max->pri &&
- result->spr_val <= max->spr &&
- result->cur_val <= max->cur;
-
- ret = result->enable;
-
- /*
- * HACK until we can pre-compute everything,
- * and thus fail gracefully if LP0 watermarks
- * are exceeded...
- */
- if (level == 0 && !result->enable) {
- if (result->pri_val > max->pri)
- DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n",
- level, result->pri_val, max->pri);
- if (result->spr_val > max->spr)
- DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n",
- level, result->spr_val, max->spr);
- if (result->cur_val > max->cur)
- DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n",
- level, result->cur_val, max->cur);
-
- result->pri_val = min_t(u32, result->pri_val, max->pri);
- result->spr_val = min_t(u32, result->spr_val, max->spr);
- result->cur_val = min_t(u32, result->cur_val, max->cur);
- result->enable = true;
- }
-
- return ret;
-}
-
-static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv,
- const struct intel_crtc *crtc,
- int level,
- struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *pristate,
- const struct intel_plane_state *sprstate,
- const struct intel_plane_state *curstate,
- struct intel_wm_level *result)
-{
- u16 pri_latency = dev_priv->display.wm.pri_latency[level];
- u16 spr_latency = dev_priv->display.wm.spr_latency[level];
- u16 cur_latency = dev_priv->display.wm.cur_latency[level];
-
- /* WM1+ latency values stored in 0.5us units */
- if (level > 0) {
- pri_latency *= 5;
- spr_latency *= 5;
- cur_latency *= 5;
- }
-
- if (pristate) {
- result->pri_val = ilk_compute_pri_wm(crtc_state, pristate,
- pri_latency, level);
- result->fbc_val = ilk_compute_fbc_wm(crtc_state, pristate, result->pri_val);
- }
-
- if (sprstate)
- result->spr_val = ilk_compute_spr_wm(crtc_state, sprstate, spr_latency);
-
- if (curstate)
- result->cur_val = ilk_compute_cur_wm(crtc_state, curstate, cur_latency);
-
- result->enable = true;
-}
-
-static void hsw_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
-{
- u64 sskpd;
-
- sskpd = intel_uncore_read64(&i915->uncore, MCH_SSKPD);
-
- wm[0] = REG_FIELD_GET64(SSKPD_NEW_WM0_MASK_HSW, sskpd);
- if (wm[0] == 0)
- wm[0] = REG_FIELD_GET64(SSKPD_OLD_WM0_MASK_HSW, sskpd);
- wm[1] = REG_FIELD_GET64(SSKPD_WM1_MASK_HSW, sskpd);
- wm[2] = REG_FIELD_GET64(SSKPD_WM2_MASK_HSW, sskpd);
- wm[3] = REG_FIELD_GET64(SSKPD_WM3_MASK_HSW, sskpd);
- wm[4] = REG_FIELD_GET64(SSKPD_WM4_MASK_HSW, sskpd);
-}
-
-static void snb_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
-{
- u32 sskpd;
-
- sskpd = intel_uncore_read(&i915->uncore, MCH_SSKPD);
-
- wm[0] = REG_FIELD_GET(SSKPD_WM0_MASK_SNB, sskpd);
- wm[1] = REG_FIELD_GET(SSKPD_WM1_MASK_SNB, sskpd);
- wm[2] = REG_FIELD_GET(SSKPD_WM2_MASK_SNB, sskpd);
- wm[3] = REG_FIELD_GET(SSKPD_WM3_MASK_SNB, sskpd);
-}
-
-static void ilk_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
-{
- u32 mltr;
-
- mltr = intel_uncore_read(&i915->uncore, MLTR_ILK);
-
- /* ILK primary LP0 latency is 700 ns */
- wm[0] = 7;
- wm[1] = REG_FIELD_GET(MLTR_WM1_MASK, mltr);
- wm[2] = REG_FIELD_GET(MLTR_WM2_MASK, mltr);
-}
-
-static void intel_fixup_spr_wm_latency(struct drm_i915_private *dev_priv,
- u16 wm[5])
-{
- /* ILK sprite LP0 latency is 1300 ns */
- if (DISPLAY_VER(dev_priv) == 5)
- wm[0] = 13;
-}
-
-static void intel_fixup_cur_wm_latency(struct drm_i915_private *dev_priv,
- u16 wm[5])
-{
- /* ILK cursor LP0 latency is 1300 ns */
- if (DISPLAY_VER(dev_priv) == 5)
- wm[0] = 13;
-}
-
-int ilk_wm_max_level(const struct drm_i915_private *dev_priv)
-{
- /* how many WM levels are we expecting */
- if (HAS_HW_SAGV_WM(dev_priv))
- return 5;
- else if (DISPLAY_VER(dev_priv) >= 9)
- return 7;
- else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
- return 4;
- else if (DISPLAY_VER(dev_priv) >= 6)
- return 3;
- else
- return 2;
-}
-
-void intel_print_wm_latency(struct drm_i915_private *dev_priv,
- const char *name, const u16 wm[])
-{
- int level, max_level = ilk_wm_max_level(dev_priv);
-
- for (level = 0; level <= max_level; level++) {
- unsigned int latency = wm[level];
-
- if (latency == 0) {
- drm_dbg_kms(&dev_priv->drm,
- "%s WM%d latency not provided\n",
- name, level);
- continue;
- }
-
- /*
- * - latencies are in us on gen9.
- * - before then, WM1+ latency values are in 0.5us units
- */
- if (DISPLAY_VER(dev_priv) >= 9)
- latency *= 10;
- else if (level > 0)
- latency *= 5;
-
- drm_dbg_kms(&dev_priv->drm,
- "%s WM%d latency %u (%u.%u usec)\n", name, level,
- wm[level], latency / 10, latency % 10);
- }
-}
-
-static bool ilk_increase_wm_latency(struct drm_i915_private *dev_priv,
- u16 wm[5], u16 min)
-{
- int level, max_level = ilk_wm_max_level(dev_priv);
-
- if (wm[0] >= min)
- return false;
-
- wm[0] = max(wm[0], min);
- for (level = 1; level <= max_level; level++)
- wm[level] = max_t(u16, wm[level], DIV_ROUND_UP(min, 5));
-
- return true;
-}
-
-static void snb_wm_latency_quirk(struct drm_i915_private *dev_priv)
-{
- bool changed;
-
- /*
- * The BIOS provided WM memory latency values are often
- * inadequate for high resolution displays. Adjust them.
- */
- changed = ilk_increase_wm_latency(dev_priv, dev_priv->display.wm.pri_latency, 12);
- changed |= ilk_increase_wm_latency(dev_priv, dev_priv->display.wm.spr_latency, 12);
- changed |= ilk_increase_wm_latency(dev_priv, dev_priv->display.wm.cur_latency, 12);
-
- if (!changed)
- return;
-
- drm_dbg_kms(&dev_priv->drm,
- "WM latency values increased to avoid potential underruns\n");
- intel_print_wm_latency(dev_priv, "Primary", dev_priv->display.wm.pri_latency);
- intel_print_wm_latency(dev_priv, "Sprite", dev_priv->display.wm.spr_latency);
- intel_print_wm_latency(dev_priv, "Cursor", dev_priv->display.wm.cur_latency);
-}
-
-static void snb_wm_lp3_irq_quirk(struct drm_i915_private *dev_priv)
-{
- /*
- * On some SNB machines (Thinkpad X220 Tablet at least)
- * LP3 usage can cause vblank interrupts to be lost.
- * The DEIIR bit will go high but it looks like the CPU
- * never gets interrupted.
- *
- * It's not clear whether other interrupt source could
- * be affected or if this is somehow limited to vblank
- * interrupts only. To play it safe we disable LP3
- * watermarks entirely.
- */
- if (dev_priv->display.wm.pri_latency[3] == 0 &&
- dev_priv->display.wm.spr_latency[3] == 0 &&
- dev_priv->display.wm.cur_latency[3] == 0)
- return;
-
- dev_priv->display.wm.pri_latency[3] = 0;
- dev_priv->display.wm.spr_latency[3] = 0;
- dev_priv->display.wm.cur_latency[3] = 0;
-
- drm_dbg_kms(&dev_priv->drm,
- "LP3 watermarks disabled due to potential for lost interrupts\n");
- intel_print_wm_latency(dev_priv, "Primary", dev_priv->display.wm.pri_latency);
- intel_print_wm_latency(dev_priv, "Sprite", dev_priv->display.wm.spr_latency);
- intel_print_wm_latency(dev_priv, "Cursor", dev_priv->display.wm.cur_latency);
-}
-
-static void ilk_setup_wm_latency(struct drm_i915_private *dev_priv)
-{
- if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
- hsw_read_wm_latency(dev_priv, dev_priv->display.wm.pri_latency);
- else if (DISPLAY_VER(dev_priv) >= 6)
- snb_read_wm_latency(dev_priv, dev_priv->display.wm.pri_latency);
- else
- ilk_read_wm_latency(dev_priv, dev_priv->display.wm.pri_latency);
-
- memcpy(dev_priv->display.wm.spr_latency, dev_priv->display.wm.pri_latency,
- sizeof(dev_priv->display.wm.pri_latency));
- memcpy(dev_priv->display.wm.cur_latency, dev_priv->display.wm.pri_latency,
- sizeof(dev_priv->display.wm.pri_latency));
-
- intel_fixup_spr_wm_latency(dev_priv, dev_priv->display.wm.spr_latency);
- intel_fixup_cur_wm_latency(dev_priv, dev_priv->display.wm.cur_latency);
-
- intel_print_wm_latency(dev_priv, "Primary", dev_priv->display.wm.pri_latency);
- intel_print_wm_latency(dev_priv, "Sprite", dev_priv->display.wm.spr_latency);
- intel_print_wm_latency(dev_priv, "Cursor", dev_priv->display.wm.cur_latency);
-
- if (DISPLAY_VER(dev_priv) == 6) {
- snb_wm_latency_quirk(dev_priv);
- snb_wm_lp3_irq_quirk(dev_priv);
- }
-}
-
-static bool ilk_validate_pipe_wm(const struct drm_i915_private *dev_priv,
- struct intel_pipe_wm *pipe_wm)
-{
- /* LP0 watermark maximums depend on this pipe alone */
- const struct intel_wm_config config = {
- .num_pipes_active = 1,
- .sprites_enabled = pipe_wm->sprites_enabled,
- .sprites_scaled = pipe_wm->sprites_scaled,
- };
- struct ilk_wm_maximums max;
-
- /* LP0 watermarks always use 1/2 DDB partitioning */
- ilk_compute_wm_maximums(dev_priv, 0, &config, INTEL_DDB_PART_1_2, &max);
-
- /* At least LP0 must be valid */
- if (!ilk_validate_wm_level(0, &max, &pipe_wm->wm[0])) {
- drm_dbg_kms(&dev_priv->drm, "LP0 watermark invalid\n");
- return false;
- }
-
- return true;
-}
-
-/* Compute new watermarks for the pipe */
-static int ilk_compute_pipe_wm(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(state->base.dev);
- struct intel_crtc_state *crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
- struct intel_pipe_wm *pipe_wm;
- struct intel_plane *plane;
- const struct intel_plane_state *plane_state;
- const struct intel_plane_state *pristate = NULL;
- const struct intel_plane_state *sprstate = NULL;
- const struct intel_plane_state *curstate = NULL;
- int level, max_level = ilk_wm_max_level(dev_priv), usable_level;
- struct ilk_wm_maximums max;
-
- pipe_wm = &crtc_state->wm.ilk.optimal;
-
- intel_atomic_crtc_state_for_each_plane_state(plane, plane_state, crtc_state) {
- if (plane->base.type == DRM_PLANE_TYPE_PRIMARY)
- pristate = plane_state;
- else if (plane->base.type == DRM_PLANE_TYPE_OVERLAY)
- sprstate = plane_state;
- else if (plane->base.type == DRM_PLANE_TYPE_CURSOR)
- curstate = plane_state;
- }
-
- pipe_wm->pipe_enabled = crtc_state->hw.active;
- pipe_wm->sprites_enabled = crtc_state->active_planes & BIT(PLANE_SPRITE0);
- pipe_wm->sprites_scaled = crtc_state->scaled_planes & BIT(PLANE_SPRITE0);
-
- usable_level = max_level;
-
- /* ILK/SNB: LP2+ watermarks only w/o sprites */
- if (DISPLAY_VER(dev_priv) <= 6 && pipe_wm->sprites_enabled)
- usable_level = 1;
-
- /* ILK/SNB/IVB: LP1+ watermarks only w/o scaling */
- if (pipe_wm->sprites_scaled)
- usable_level = 0;
-
- memset(&pipe_wm->wm, 0, sizeof(pipe_wm->wm));
- ilk_compute_wm_level(dev_priv, crtc, 0, crtc_state,
- pristate, sprstate, curstate, &pipe_wm->wm[0]);
-
- if (!ilk_validate_pipe_wm(dev_priv, pipe_wm))
- return -EINVAL;
-
- ilk_compute_wm_reg_maximums(dev_priv, 1, &max);
-
- for (level = 1; level <= usable_level; level++) {
- struct intel_wm_level *wm = &pipe_wm->wm[level];
-
- ilk_compute_wm_level(dev_priv, crtc, level, crtc_state,
- pristate, sprstate, curstate, wm);
-
- /*
- * Disable any watermark level that exceeds the
- * register maximums since such watermarks are
- * always invalid.
- */
- if (!ilk_validate_wm_level(level, &max, wm)) {
- memset(wm, 0, sizeof(*wm));
- break;
- }
- }
-
- return 0;
-}
-
-/*
- * Build a set of 'intermediate' watermark values that satisfy both the old
- * state and the new state. These can be programmed to the hardware
- * immediately.
- */
-static int ilk_compute_intermediate_wm(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- struct intel_crtc_state *new_crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
- const struct intel_crtc_state *old_crtc_state =
- intel_atomic_get_old_crtc_state(state, crtc);
- struct intel_pipe_wm *a = &new_crtc_state->wm.ilk.intermediate;
- const struct intel_pipe_wm *b = &old_crtc_state->wm.ilk.optimal;
- int level, max_level = ilk_wm_max_level(dev_priv);
-
- /*
- * Start with the final, target watermarks, then combine with the
- * currently active watermarks to get values that are safe both before
- * and after the vblank.
- */
- *a = new_crtc_state->wm.ilk.optimal;
- if (!new_crtc_state->hw.active ||
- drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi) ||
- state->skip_intermediate_wm)
- return 0;
-
- a->pipe_enabled |= b->pipe_enabled;
- a->sprites_enabled |= b->sprites_enabled;
- a->sprites_scaled |= b->sprites_scaled;
-
- for (level = 0; level <= max_level; level++) {
- struct intel_wm_level *a_wm = &a->wm[level];
- const struct intel_wm_level *b_wm = &b->wm[level];
-
- a_wm->enable &= b_wm->enable;
- a_wm->pri_val = max(a_wm->pri_val, b_wm->pri_val);
- a_wm->spr_val = max(a_wm->spr_val, b_wm->spr_val);
- a_wm->cur_val = max(a_wm->cur_val, b_wm->cur_val);
- a_wm->fbc_val = max(a_wm->fbc_val, b_wm->fbc_val);
- }
-
- /*
- * We need to make sure that these merged watermark values are
- * actually a valid configuration themselves. If they're not,
- * there's no safe way to transition from the old state to
- * the new state, so we need to fail the atomic transaction.
- */
- if (!ilk_validate_pipe_wm(dev_priv, a))
- return -EINVAL;
-
- /*
- * If our intermediate WM are identical to the final WM, then we can
- * omit the post-vblank programming; only update if it's different.
- */
- if (memcmp(a, &new_crtc_state->wm.ilk.optimal, sizeof(*a)) != 0)
- new_crtc_state->wm.need_postvbl_update = true;
-
- return 0;
-}
-
-/*
- * Merge the watermarks from all active pipes for a specific level.
- */
-static void ilk_merge_wm_level(struct drm_i915_private *dev_priv,
- int level,
- struct intel_wm_level *ret_wm)
-{
- const struct intel_crtc *crtc;
-
- ret_wm->enable = true;
-
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- const struct intel_pipe_wm *active = &crtc->wm.active.ilk;
- const struct intel_wm_level *wm = &active->wm[level];
-
- if (!active->pipe_enabled)
- continue;
-
- /*
- * The watermark values may have been used in the past,
- * so we must maintain them in the registers for some
- * time even if the level is now disabled.
- */
- if (!wm->enable)
- ret_wm->enable = false;
-
- ret_wm->pri_val = max(ret_wm->pri_val, wm->pri_val);
- ret_wm->spr_val = max(ret_wm->spr_val, wm->spr_val);
- ret_wm->cur_val = max(ret_wm->cur_val, wm->cur_val);
- ret_wm->fbc_val = max(ret_wm->fbc_val, wm->fbc_val);
- }
-}
-
-/*
- * Merge all low power watermarks for all active pipes.
- */
-static void ilk_wm_merge(struct drm_i915_private *dev_priv,
- const struct intel_wm_config *config,
- const struct ilk_wm_maximums *max,
- struct intel_pipe_wm *merged)
-{
- int level, max_level = ilk_wm_max_level(dev_priv);
- int last_enabled_level = max_level;
-
- /* ILK/SNB/IVB: LP1+ watermarks only w/ single pipe */
- if ((DISPLAY_VER(dev_priv) <= 6 || IS_IVYBRIDGE(dev_priv)) &&
- config->num_pipes_active > 1)
- last_enabled_level = 0;
-
- /* ILK: FBC WM must be disabled always */
- merged->fbc_wm_enabled = DISPLAY_VER(dev_priv) >= 6;
-
- /* merge each WM1+ level */
- for (level = 1; level <= max_level; level++) {
- struct intel_wm_level *wm = &merged->wm[level];
-
- ilk_merge_wm_level(dev_priv, level, wm);
-
- if (level > last_enabled_level)
- wm->enable = false;
- else if (!ilk_validate_wm_level(level, max, wm))
- /* make sure all following levels get disabled */
- last_enabled_level = level - 1;
-
- /*
- * The spec says it is preferred to disable
- * FBC WMs instead of disabling a WM level.
- */
- if (wm->fbc_val > max->fbc) {
- if (wm->enable)
- merged->fbc_wm_enabled = false;
- wm->fbc_val = 0;
- }
- }
-
- /* ILK: LP2+ must be disabled when FBC WM is disabled but FBC enabled */
- if (DISPLAY_VER(dev_priv) == 5 && HAS_FBC(dev_priv) &&
- dev_priv->params.enable_fbc && !merged->fbc_wm_enabled) {
- for (level = 2; level <= max_level; level++) {
- struct intel_wm_level *wm = &merged->wm[level];
-
- wm->enable = false;
- }
- }
-}
-
-static int ilk_wm_lp_to_level(int wm_lp, const struct intel_pipe_wm *pipe_wm)
-{
- /* LP1,LP2,LP3 levels are either 1,2,3 or 1,3,4 */
- return wm_lp + (wm_lp >= 2 && pipe_wm->wm[4].enable);
-}
-
-/* The value we need to program into the WM_LPx latency field */
-static unsigned int ilk_wm_lp_latency(struct drm_i915_private *dev_priv,
- int level)
-{
- if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
- return 2 * level;
- else
- return dev_priv->display.wm.pri_latency[level];
-}
-
-static void ilk_compute_wm_results(struct drm_i915_private *dev_priv,
- const struct intel_pipe_wm *merged,
- enum intel_ddb_partitioning partitioning,
- struct ilk_wm_values *results)
-{
- struct intel_crtc *crtc;
- int level, wm_lp;
-
- results->enable_fbc_wm = merged->fbc_wm_enabled;
- results->partitioning = partitioning;
-
- /* LP1+ register values */
- for (wm_lp = 1; wm_lp <= 3; wm_lp++) {
- const struct intel_wm_level *r;
-
- level = ilk_wm_lp_to_level(wm_lp, merged);
-
- r = &merged->wm[level];
-
- /*
- * Maintain the watermark values even if the level is
- * disabled. Doing otherwise could cause underruns.
- */
- results->wm_lp[wm_lp - 1] =
- WM_LP_LATENCY(ilk_wm_lp_latency(dev_priv, level)) |
- WM_LP_PRIMARY(r->pri_val) |
- WM_LP_CURSOR(r->cur_val);
-
- if (r->enable)
- results->wm_lp[wm_lp - 1] |= WM_LP_ENABLE;
-
- if (DISPLAY_VER(dev_priv) >= 8)
- results->wm_lp[wm_lp - 1] |= WM_LP_FBC_BDW(r->fbc_val);
- else
- results->wm_lp[wm_lp - 1] |= WM_LP_FBC_ILK(r->fbc_val);
-
- results->wm_lp_spr[wm_lp - 1] = WM_LP_SPRITE(r->spr_val);
-
- /*
- * Always set WM_LP_SPRITE_EN when spr_val != 0, even if the
- * level is disabled. Doing otherwise could cause underruns.
- */
- if (DISPLAY_VER(dev_priv) <= 6 && r->spr_val) {
- drm_WARN_ON(&dev_priv->drm, wm_lp != 1);
- results->wm_lp_spr[wm_lp - 1] |= WM_LP_SPRITE_ENABLE;
- }
- }
-
- /* LP0 register values */
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- enum pipe pipe = crtc->pipe;
- const struct intel_pipe_wm *pipe_wm = &crtc->wm.active.ilk;
- const struct intel_wm_level *r = &pipe_wm->wm[0];
-
- if (drm_WARN_ON(&dev_priv->drm, !r->enable))
- continue;
-
- results->wm_pipe[pipe] =
- WM0_PIPE_PRIMARY(r->pri_val) |
- WM0_PIPE_SPRITE(r->spr_val) |
- WM0_PIPE_CURSOR(r->cur_val);
- }
-}
-
-/* Find the result with the highest level enabled. Check for enable_fbc_wm in
- * case both are at the same level. Prefer r1 in case they're the same. */
-static struct intel_pipe_wm *
-ilk_find_best_result(struct drm_i915_private *dev_priv,
- struct intel_pipe_wm *r1,
- struct intel_pipe_wm *r2)
-{
- int level, max_level = ilk_wm_max_level(dev_priv);
- int level1 = 0, level2 = 0;
-
- for (level = 1; level <= max_level; level++) {
- if (r1->wm[level].enable)
- level1 = level;
- if (r2->wm[level].enable)
- level2 = level;
- }
-
- if (level1 == level2) {
- if (r2->fbc_wm_enabled && !r1->fbc_wm_enabled)
- return r2;
- else
- return r1;
- } else if (level1 > level2) {
- return r1;
- } else {
- return r2;
- }
-}
-
-/* dirty bits used to track which watermarks need changes */
-#define WM_DIRTY_PIPE(pipe) (1 << (pipe))
-#define WM_DIRTY_LP(wm_lp) (1 << (15 + (wm_lp)))
-#define WM_DIRTY_LP_ALL (WM_DIRTY_LP(1) | WM_DIRTY_LP(2) | WM_DIRTY_LP(3))
-#define WM_DIRTY_FBC (1 << 24)
-#define WM_DIRTY_DDB (1 << 25)
-
-static unsigned int ilk_compute_wm_dirty(struct drm_i915_private *dev_priv,
- const struct ilk_wm_values *old,
- const struct ilk_wm_values *new)
-{
- unsigned int dirty = 0;
- enum pipe pipe;
- int wm_lp;
-
- for_each_pipe(dev_priv, pipe) {
- if (old->wm_pipe[pipe] != new->wm_pipe[pipe]) {
- dirty |= WM_DIRTY_PIPE(pipe);
- /* Must disable LP1+ watermarks too */
- dirty |= WM_DIRTY_LP_ALL;
- }
- }
-
- if (old->enable_fbc_wm != new->enable_fbc_wm) {
- dirty |= WM_DIRTY_FBC;
- /* Must disable LP1+ watermarks too */
- dirty |= WM_DIRTY_LP_ALL;
- }
-
- if (old->partitioning != new->partitioning) {
- dirty |= WM_DIRTY_DDB;
- /* Must disable LP1+ watermarks too */
- dirty |= WM_DIRTY_LP_ALL;
- }
-
- /* LP1+ watermarks already deemed dirty, no need to continue */
- if (dirty & WM_DIRTY_LP_ALL)
- return dirty;
-
- /* Find the lowest numbered LP1+ watermark in need of an update... */
- for (wm_lp = 1; wm_lp <= 3; wm_lp++) {
- if (old->wm_lp[wm_lp - 1] != new->wm_lp[wm_lp - 1] ||
- old->wm_lp_spr[wm_lp - 1] != new->wm_lp_spr[wm_lp - 1])
- break;
- }
-
- /* ...and mark it and all higher numbered LP1+ watermarks as dirty */
- for (; wm_lp <= 3; wm_lp++)
- dirty |= WM_DIRTY_LP(wm_lp);
-
- return dirty;
-}
-
-static bool _ilk_disable_lp_wm(struct drm_i915_private *dev_priv,
- unsigned int dirty)
-{
- struct ilk_wm_values *previous = &dev_priv->display.wm.hw;
- bool changed = false;
-
- if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] & WM_LP_ENABLE) {
- previous->wm_lp[2] &= ~WM_LP_ENABLE;
- intel_uncore_write(&dev_priv->uncore, WM3_LP_ILK, previous->wm_lp[2]);
- changed = true;
- }
- if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] & WM_LP_ENABLE) {
- previous->wm_lp[1] &= ~WM_LP_ENABLE;
- intel_uncore_write(&dev_priv->uncore, WM2_LP_ILK, previous->wm_lp[1]);
- changed = true;
- }
- if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] & WM_LP_ENABLE) {
- previous->wm_lp[0] &= ~WM_LP_ENABLE;
- intel_uncore_write(&dev_priv->uncore, WM1_LP_ILK, previous->wm_lp[0]);
- changed = true;
- }
-
- /*
- * Don't touch WM_LP_SPRITE_ENABLE here.
- * Doing so could cause underruns.
- */
-
- return changed;
-}
-
-/*
- * The spec says we shouldn't write when we don't need, because every write
- * causes WMs to be re-evaluated, expending some power.
- */
-static void ilk_write_wm_values(struct drm_i915_private *dev_priv,
- struct ilk_wm_values *results)
-{
- struct ilk_wm_values *previous = &dev_priv->display.wm.hw;
- unsigned int dirty;
- u32 val;
-
- dirty = ilk_compute_wm_dirty(dev_priv, previous, results);
- if (!dirty)
- return;
-
- _ilk_disable_lp_wm(dev_priv, dirty);
-
- if (dirty & WM_DIRTY_PIPE(PIPE_A))
- intel_uncore_write(&dev_priv->uncore, WM0_PIPE_ILK(PIPE_A), results->wm_pipe[0]);
- if (dirty & WM_DIRTY_PIPE(PIPE_B))
- intel_uncore_write(&dev_priv->uncore, WM0_PIPE_ILK(PIPE_B), results->wm_pipe[1]);
- if (dirty & WM_DIRTY_PIPE(PIPE_C))
- intel_uncore_write(&dev_priv->uncore, WM0_PIPE_ILK(PIPE_C), results->wm_pipe[2]);
-
- if (dirty & WM_DIRTY_DDB) {
- if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
- val = intel_uncore_read(&dev_priv->uncore, WM_MISC);
- if (results->partitioning == INTEL_DDB_PART_1_2)
- val &= ~WM_MISC_DATA_PARTITION_5_6;
- else
- val |= WM_MISC_DATA_PARTITION_5_6;
- intel_uncore_write(&dev_priv->uncore, WM_MISC, val);
- } else {
- val = intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL2);
- if (results->partitioning == INTEL_DDB_PART_1_2)
- val &= ~DISP_DATA_PARTITION_5_6;
- else
- val |= DISP_DATA_PARTITION_5_6;
- intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL2, val);
- }
- }
-
- if (dirty & WM_DIRTY_FBC) {
- val = intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL);
- if (results->enable_fbc_wm)
- val &= ~DISP_FBC_WM_DIS;
- else
- val |= DISP_FBC_WM_DIS;
- intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, val);
- }
-
- if (dirty & WM_DIRTY_LP(1) &&
- previous->wm_lp_spr[0] != results->wm_lp_spr[0])
- intel_uncore_write(&dev_priv->uncore, WM1S_LP_ILK, results->wm_lp_spr[0]);
-
- if (DISPLAY_VER(dev_priv) >= 7) {
- if (dirty & WM_DIRTY_LP(2) && previous->wm_lp_spr[1] != results->wm_lp_spr[1])
- intel_uncore_write(&dev_priv->uncore, WM2S_LP_IVB, results->wm_lp_spr[1]);
- if (dirty & WM_DIRTY_LP(3) && previous->wm_lp_spr[2] != results->wm_lp_spr[2])
- intel_uncore_write(&dev_priv->uncore, WM3S_LP_IVB, results->wm_lp_spr[2]);
- }
-
- if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] != results->wm_lp[0])
- intel_uncore_write(&dev_priv->uncore, WM1_LP_ILK, results->wm_lp[0]);
- if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] != results->wm_lp[1])
- intel_uncore_write(&dev_priv->uncore, WM2_LP_ILK, results->wm_lp[1]);
- if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] != results->wm_lp[2])
- intel_uncore_write(&dev_priv->uncore, WM3_LP_ILK, results->wm_lp[2]);
-
- dev_priv->display.wm.hw = *results;
-}
-
-bool ilk_disable_lp_wm(struct drm_i915_private *dev_priv)
-{
- return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL);
-}
-
-static void ilk_compute_wm_config(struct drm_i915_private *dev_priv,
- struct intel_wm_config *config)
-{
- struct intel_crtc *crtc;
-
- /* Compute the currently _active_ config */
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- const struct intel_pipe_wm *wm = &crtc->wm.active.ilk;
-
- if (!wm->pipe_enabled)
- continue;
-
- config->sprites_enabled |= wm->sprites_enabled;
- config->sprites_scaled |= wm->sprites_scaled;
- config->num_pipes_active++;
- }
-}
-
-static void ilk_program_watermarks(struct drm_i915_private *dev_priv)
-{
- struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm;
- struct ilk_wm_maximums max;
- struct intel_wm_config config = {};
- struct ilk_wm_values results = {};
- enum intel_ddb_partitioning partitioning;
-
- ilk_compute_wm_config(dev_priv, &config);
-
- ilk_compute_wm_maximums(dev_priv, 1, &config, INTEL_DDB_PART_1_2, &max);
- ilk_wm_merge(dev_priv, &config, &max, &lp_wm_1_2);
-
- /* 5/6 split only in single pipe config on IVB+ */
- if (DISPLAY_VER(dev_priv) >= 7 &&
- config.num_pipes_active == 1 && config.sprites_enabled) {
- ilk_compute_wm_maximums(dev_priv, 1, &config, INTEL_DDB_PART_5_6, &max);
- ilk_wm_merge(dev_priv, &config, &max, &lp_wm_5_6);
-
- best_lp_wm = ilk_find_best_result(dev_priv, &lp_wm_1_2, &lp_wm_5_6);
- } else {
- best_lp_wm = &lp_wm_1_2;
- }
-
- partitioning = (best_lp_wm == &lp_wm_1_2) ?
- INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6;
-
- ilk_compute_wm_results(dev_priv, best_lp_wm, partitioning, &results);
-
- ilk_write_wm_values(dev_priv, &results);
-}
-
-static void ilk_initial_watermarks(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- const struct intel_crtc_state *crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
-
- mutex_lock(&dev_priv->display.wm.wm_mutex);
- crtc->wm.active.ilk = crtc_state->wm.ilk.intermediate;
- ilk_program_watermarks(dev_priv);
- mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void ilk_optimize_watermarks(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- const struct intel_crtc_state *crtc_state =
- intel_atomic_get_new_crtc_state(state, crtc);
-
- if (!crtc_state->wm.need_postvbl_update)
- return;
-
- mutex_lock(&dev_priv->display.wm.wm_mutex);
- crtc->wm.active.ilk = crtc_state->wm.ilk.optimal;
- ilk_program_watermarks(dev_priv);
- mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void ilk_pipe_wm_get_hw_state(struct intel_crtc *crtc)
-{
- struct drm_device *dev = crtc->base.dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct ilk_wm_values *hw = &dev_priv->display.wm.hw;
- struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state);
- struct intel_pipe_wm *active = &crtc_state->wm.ilk.optimal;
- enum pipe pipe = crtc->pipe;
-
- hw->wm_pipe[pipe] = intel_uncore_read(&dev_priv->uncore, WM0_PIPE_ILK(pipe));
-
- memset(active, 0, sizeof(*active));
-
- active->pipe_enabled = crtc->active;
-
- if (active->pipe_enabled) {
- u32 tmp = hw->wm_pipe[pipe];
-
- /*
- * For active pipes LP0 watermark is marked as
- * enabled, and LP1+ watermaks as disabled since
- * we can't really reverse compute them in case
- * multiple pipes are active.
- */
- active->wm[0].enable = true;
- active->wm[0].pri_val = REG_FIELD_GET(WM0_PIPE_PRIMARY_MASK, tmp);
- active->wm[0].spr_val = REG_FIELD_GET(WM0_PIPE_SPRITE_MASK, tmp);
- active->wm[0].cur_val = REG_FIELD_GET(WM0_PIPE_CURSOR_MASK, tmp);
- } else {
- int level, max_level = ilk_wm_max_level(dev_priv);
-
- /*
- * For inactive pipes, all watermark levels
- * should be marked as enabled but zeroed,
- * which is what we'd compute them to.
- */
- for (level = 0; level <= max_level; level++)
- active->wm[level].enable = true;
- }
-
- crtc->wm.active.ilk = *active;
-}
-
-#define _FW_WM(value, plane) \
- (((value) & DSPFW_ ## plane ## _MASK) >> DSPFW_ ## plane ## _SHIFT)
-#define _FW_WM_VLV(value, plane) \
- (((value) & DSPFW_ ## plane ## _MASK_VLV) >> DSPFW_ ## plane ## _SHIFT)
-
-static void g4x_read_wm_values(struct drm_i915_private *dev_priv,
- struct g4x_wm_values *wm)
-{
- u32 tmp;
-
- tmp = intel_uncore_read(&dev_priv->uncore, DSPFW1);
- wm->sr.plane = _FW_WM(tmp, SR);
- wm->pipe[PIPE_B].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORB);
- wm->pipe[PIPE_B].plane[PLANE_PRIMARY] = _FW_WM(tmp, PLANEB);
- wm->pipe[PIPE_A].plane[PLANE_PRIMARY] = _FW_WM(tmp, PLANEA);
-
- tmp = intel_uncore_read(&dev_priv->uncore, DSPFW2);
- wm->fbc_en = tmp & DSPFW_FBC_SR_EN;
- wm->sr.fbc = _FW_WM(tmp, FBC_SR);
- wm->hpll.fbc = _FW_WM(tmp, FBC_HPLL_SR);
- wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM(tmp, SPRITEB);
- wm->pipe[PIPE_A].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORA);
- wm->pipe[PIPE_A].plane[PLANE_SPRITE0] = _FW_WM(tmp, SPRITEA);
-
- tmp = intel_uncore_read(&dev_priv->uncore, DSPFW3);
- wm->hpll_en = tmp & DSPFW_HPLL_SR_EN;
- wm->sr.cursor = _FW_WM(tmp, CURSOR_SR);
- wm->hpll.cursor = _FW_WM(tmp, HPLL_CURSOR);
- wm->hpll.plane = _FW_WM(tmp, HPLL_SR);
-}
-
-static void vlv_read_wm_values(struct drm_i915_private *dev_priv,
- struct vlv_wm_values *wm)
-{
- enum pipe pipe;
- u32 tmp;
-
- for_each_pipe(dev_priv, pipe) {
- tmp = intel_uncore_read(&dev_priv->uncore, VLV_DDL(pipe));
-
- wm->ddl[pipe].plane[PLANE_PRIMARY] =
- (tmp >> DDL_PLANE_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
- wm->ddl[pipe].plane[PLANE_CURSOR] =
- (tmp >> DDL_CURSOR_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
- wm->ddl[pipe].plane[PLANE_SPRITE0] =
- (tmp >> DDL_SPRITE_SHIFT(0)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
- wm->ddl[pipe].plane[PLANE_SPRITE1] =
- (tmp >> DDL_SPRITE_SHIFT(1)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
- }
-
- tmp = intel_uncore_read(&dev_priv->uncore, DSPFW1);
- wm->sr.plane = _FW_WM(tmp, SR);
- wm->pipe[PIPE_B].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORB);
- wm->pipe[PIPE_B].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEB);
- wm->pipe[PIPE_A].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEA);
-
- tmp = intel_uncore_read(&dev_priv->uncore, DSPFW2);
- wm->pipe[PIPE_A].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITEB);
- wm->pipe[PIPE_A].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORA);
- wm->pipe[PIPE_A].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEA);
-
- tmp = intel_uncore_read(&dev_priv->uncore, DSPFW3);
- wm->sr.cursor = _FW_WM(tmp, CURSOR_SR);
-
- if (IS_CHERRYVIEW(dev_priv)) {
- tmp = intel_uncore_read(&dev_priv->uncore, DSPFW7_CHV);
- wm->pipe[PIPE_B].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITED);
- wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEC);
-
- tmp = intel_uncore_read(&dev_priv->uncore, DSPFW8_CHV);
- wm->pipe[PIPE_C].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITEF);
- wm->pipe[PIPE_C].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEE);
-
- tmp = intel_uncore_read(&dev_priv->uncore, DSPFW9_CHV);
- wm->pipe[PIPE_C].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEC);
- wm->pipe[PIPE_C].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORC);
-
- tmp = intel_uncore_read(&dev_priv->uncore, DSPHOWM);
- wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9;
- wm->pipe[PIPE_C].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITEF_HI) << 8;
- wm->pipe[PIPE_C].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEE_HI) << 8;
- wm->pipe[PIPE_C].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEC_HI) << 8;
- wm->pipe[PIPE_B].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITED_HI) << 8;
- wm->pipe[PIPE_B].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEC_HI) << 8;
- wm->pipe[PIPE_B].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEB_HI) << 8;
- wm->pipe[PIPE_A].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITEB_HI) << 8;
- wm->pipe[PIPE_A].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEA_HI) << 8;
- wm->pipe[PIPE_A].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEA_HI) << 8;
- } else {
- tmp = intel_uncore_read(&dev_priv->uncore, DSPFW7);
- wm->pipe[PIPE_B].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITED);
- wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEC);
-
- tmp = intel_uncore_read(&dev_priv->uncore, DSPHOWM);
- wm->sr.plane |= _FW_WM(tmp, SR_HI) << 9;
- wm->pipe[PIPE_B].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITED_HI) << 8;
- wm->pipe[PIPE_B].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEC_HI) << 8;
- wm->pipe[PIPE_B].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEB_HI) << 8;
- wm->pipe[PIPE_A].plane[PLANE_SPRITE1] |= _FW_WM(tmp, SPRITEB_HI) << 8;
- wm->pipe[PIPE_A].plane[PLANE_SPRITE0] |= _FW_WM(tmp, SPRITEA_HI) << 8;
- wm->pipe[PIPE_A].plane[PLANE_PRIMARY] |= _FW_WM(tmp, PLANEA_HI) << 8;
- }
-}
-
-#undef _FW_WM
-#undef _FW_WM_VLV
-
-void g4x_wm_get_hw_state(struct drm_i915_private *dev_priv)
-{
- struct g4x_wm_values *wm = &dev_priv->display.wm.g4x;
- struct intel_crtc *crtc;
-
- g4x_read_wm_values(dev_priv, wm);
-
- wm->cxsr = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF) & FW_BLC_SELF_EN;
-
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- struct intel_crtc_state *crtc_state =
- to_intel_crtc_state(crtc->base.state);
- struct g4x_wm_state *active = &crtc->wm.active.g4x;
- struct g4x_pipe_wm *raw;
- enum pipe pipe = crtc->pipe;
- enum plane_id plane_id;
- int level, max_level;
-
- active->cxsr = wm->cxsr;
- active->hpll_en = wm->hpll_en;
- active->fbc_en = wm->fbc_en;
-
- active->sr = wm->sr;
- active->hpll = wm->hpll;
-
- for_each_plane_id_on_crtc(crtc, plane_id) {
- active->wm.plane[plane_id] =
- wm->pipe[pipe].plane[plane_id];
- }
-
- if (wm->cxsr && wm->hpll_en)
- max_level = G4X_WM_LEVEL_HPLL;
- else if (wm->cxsr)
- max_level = G4X_WM_LEVEL_SR;
- else
- max_level = G4X_WM_LEVEL_NORMAL;
-
- level = G4X_WM_LEVEL_NORMAL;
- raw = &crtc_state->wm.g4x.raw[level];
- for_each_plane_id_on_crtc(crtc, plane_id)
- raw->plane[plane_id] = active->wm.plane[plane_id];
-
- level = G4X_WM_LEVEL_SR;
- if (level > max_level)
- goto out;
-
- raw = &crtc_state->wm.g4x.raw[level];
- raw->plane[PLANE_PRIMARY] = active->sr.plane;
- raw->plane[PLANE_CURSOR] = active->sr.cursor;
- raw->plane[PLANE_SPRITE0] = 0;
- raw->fbc = active->sr.fbc;
-
- level = G4X_WM_LEVEL_HPLL;
- if (level > max_level)
- goto out;
-
- raw = &crtc_state->wm.g4x.raw[level];
- raw->plane[PLANE_PRIMARY] = active->hpll.plane;
- raw->plane[PLANE_CURSOR] = active->hpll.cursor;
- raw->plane[PLANE_SPRITE0] = 0;
- raw->fbc = active->hpll.fbc;
-
- level++;
- out:
- for_each_plane_id_on_crtc(crtc, plane_id)
- g4x_raw_plane_wm_set(crtc_state, level,
- plane_id, USHRT_MAX);
- g4x_raw_fbc_wm_set(crtc_state, level, USHRT_MAX);
-
- g4x_invalidate_wms(crtc, active, level);
-
- crtc_state->wm.g4x.optimal = *active;
- crtc_state->wm.g4x.intermediate = *active;
-
- drm_dbg_kms(&dev_priv->drm,
- "Initial watermarks: pipe %c, plane=%d, cursor=%d, sprite=%d\n",
- pipe_name(pipe),
- wm->pipe[pipe].plane[PLANE_PRIMARY],
- wm->pipe[pipe].plane[PLANE_CURSOR],
- wm->pipe[pipe].plane[PLANE_SPRITE0]);
- }
-
- drm_dbg_kms(&dev_priv->drm,
- "Initial SR watermarks: plane=%d, cursor=%d fbc=%d\n",
- wm->sr.plane, wm->sr.cursor, wm->sr.fbc);
- drm_dbg_kms(&dev_priv->drm,
- "Initial HPLL watermarks: plane=%d, SR cursor=%d fbc=%d\n",
- wm->hpll.plane, wm->hpll.cursor, wm->hpll.fbc);
- drm_dbg_kms(&dev_priv->drm, "Initial SR=%s HPLL=%s FBC=%s\n",
- str_yes_no(wm->cxsr), str_yes_no(wm->hpll_en),
- str_yes_no(wm->fbc_en));
-}
-
-void g4x_wm_sanitize(struct drm_i915_private *dev_priv)
-{
- struct intel_plane *plane;
- struct intel_crtc *crtc;
-
- mutex_lock(&dev_priv->display.wm.wm_mutex);
-
- for_each_intel_plane(&dev_priv->drm, plane) {
- struct intel_crtc *crtc =
- intel_crtc_for_pipe(dev_priv, plane->pipe);
- struct intel_crtc_state *crtc_state =
- to_intel_crtc_state(crtc->base.state);
- struct intel_plane_state *plane_state =
- to_intel_plane_state(plane->base.state);
- enum plane_id plane_id = plane->id;
- int level, num_levels = intel_wm_num_levels(dev_priv);
-
- if (plane_state->uapi.visible)
- continue;
-
- for (level = 0; level < num_levels; level++) {
- struct g4x_pipe_wm *raw =
- &crtc_state->wm.g4x.raw[level];
-
- raw->plane[plane_id] = 0;
-
- if (plane_id == PLANE_PRIMARY)
- raw->fbc = 0;
- }
- }
-
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- struct intel_crtc_state *crtc_state =
- to_intel_crtc_state(crtc->base.state);
- int ret;
-
- ret = _g4x_compute_pipe_wm(crtc_state);
- drm_WARN_ON(&dev_priv->drm, ret);
-
- crtc_state->wm.g4x.intermediate =
- crtc_state->wm.g4x.optimal;
- crtc->wm.active.g4x = crtc_state->wm.g4x.optimal;
- }
-
- g4x_program_watermarks(dev_priv);
-
- mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-void vlv_wm_get_hw_state(struct drm_i915_private *dev_priv)
-{
- struct vlv_wm_values *wm = &dev_priv->display.wm.vlv;
- struct intel_crtc *crtc;
- u32 val;
-
- vlv_read_wm_values(dev_priv, wm);
-
- wm->cxsr = intel_uncore_read(&dev_priv->uncore, FW_BLC_SELF_VLV) & FW_CSPWRDWNEN;
- wm->level = VLV_WM_LEVEL_PM2;
-
- if (IS_CHERRYVIEW(dev_priv)) {
- vlv_punit_get(dev_priv);
-
- val = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
- if (val & DSP_MAXFIFO_PM5_ENABLE)
- wm->level = VLV_WM_LEVEL_PM5;
-
- /*
- * If DDR DVFS is disabled in the BIOS, Punit
- * will never ack the request. So if that happens
- * assume we don't have to enable/disable DDR DVFS
- * dynamically. To test that just set the REQ_ACK
- * bit to poke the Punit, but don't change the
- * HIGH/LOW bits so that we don't actually change
- * the current state.
- */
- val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2);
- val |= FORCE_DDR_FREQ_REQ_ACK;
- vlv_punit_write(dev_priv, PUNIT_REG_DDR_SETUP2, val);
-
- if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2) &
- FORCE_DDR_FREQ_REQ_ACK) == 0, 3)) {
- drm_dbg_kms(&dev_priv->drm,
- "Punit not acking DDR DVFS request, "
- "assuming DDR DVFS is disabled\n");
- dev_priv->display.wm.max_level = VLV_WM_LEVEL_PM5;
- } else {
- val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2);
- if ((val & FORCE_DDR_HIGH_FREQ) == 0)
- wm->level = VLV_WM_LEVEL_DDR_DVFS;
- }
-
- vlv_punit_put(dev_priv);
- }
-
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- struct intel_crtc_state *crtc_state =
- to_intel_crtc_state(crtc->base.state);
- struct vlv_wm_state *active = &crtc->wm.active.vlv;
- const struct vlv_fifo_state *fifo_state =
- &crtc_state->wm.vlv.fifo_state;
- enum pipe pipe = crtc->pipe;
- enum plane_id plane_id;
- int level;
-
- vlv_get_fifo_size(crtc_state);
-
- active->num_levels = wm->level + 1;
- active->cxsr = wm->cxsr;
-
- for (level = 0; level < active->num_levels; level++) {
- struct g4x_pipe_wm *raw =
- &crtc_state->wm.vlv.raw[level];
-
- active->sr[level].plane = wm->sr.plane;
- active->sr[level].cursor = wm->sr.cursor;
-
- for_each_plane_id_on_crtc(crtc, plane_id) {
- active->wm[level].plane[plane_id] =
- wm->pipe[pipe].plane[plane_id];
-
- raw->plane[plane_id] =
- vlv_invert_wm_value(active->wm[level].plane[plane_id],
- fifo_state->plane[plane_id]);
- }
- }
-
- for_each_plane_id_on_crtc(crtc, plane_id)
- vlv_raw_plane_wm_set(crtc_state, level,
- plane_id, USHRT_MAX);
- vlv_invalidate_wms(crtc, active, level);
-
- crtc_state->wm.vlv.optimal = *active;
- crtc_state->wm.vlv.intermediate = *active;
-
- drm_dbg_kms(&dev_priv->drm,
- "Initial watermarks: pipe %c, plane=%d, cursor=%d, sprite0=%d, sprite1=%d\n",
- pipe_name(pipe),
- wm->pipe[pipe].plane[PLANE_PRIMARY],
- wm->pipe[pipe].plane[PLANE_CURSOR],
- wm->pipe[pipe].plane[PLANE_SPRITE0],
- wm->pipe[pipe].plane[PLANE_SPRITE1]);
- }
-
- drm_dbg_kms(&dev_priv->drm,
- "Initial watermarks: SR plane=%d, SR cursor=%d level=%d cxsr=%d\n",
- wm->sr.plane, wm->sr.cursor, wm->level, wm->cxsr);
-}
-
-void vlv_wm_sanitize(struct drm_i915_private *dev_priv)
-{
- struct intel_plane *plane;
- struct intel_crtc *crtc;
-
- mutex_lock(&dev_priv->display.wm.wm_mutex);
-
- for_each_intel_plane(&dev_priv->drm, plane) {
- struct intel_crtc *crtc =
- intel_crtc_for_pipe(dev_priv, plane->pipe);
- struct intel_crtc_state *crtc_state =
- to_intel_crtc_state(crtc->base.state);
- struct intel_plane_state *plane_state =
- to_intel_plane_state(plane->base.state);
- enum plane_id plane_id = plane->id;
- int level, num_levels = intel_wm_num_levels(dev_priv);
-
- if (plane_state->uapi.visible)
- continue;
-
- for (level = 0; level < num_levels; level++) {
- struct g4x_pipe_wm *raw =
- &crtc_state->wm.vlv.raw[level];
-
- raw->plane[plane_id] = 0;
- }
- }
-
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- struct intel_crtc_state *crtc_state =
- to_intel_crtc_state(crtc->base.state);
- int ret;
-
- ret = _vlv_compute_pipe_wm(crtc_state);
- drm_WARN_ON(&dev_priv->drm, ret);
-
- crtc_state->wm.vlv.intermediate =
- crtc_state->wm.vlv.optimal;
- crtc->wm.active.vlv = crtc_state->wm.vlv.optimal;
- }
-
- vlv_program_watermarks(dev_priv);
-
- mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-/*
- * FIXME should probably kill this and improve
- * the real watermark readout/sanitation instead
- */
-static void ilk_init_lp_watermarks(struct drm_i915_private *dev_priv)
-{
- intel_uncore_write(&dev_priv->uncore, WM3_LP_ILK, intel_uncore_read(&dev_priv->uncore, WM3_LP_ILK) & ~WM_LP_ENABLE);
- intel_uncore_write(&dev_priv->uncore, WM2_LP_ILK, intel_uncore_read(&dev_priv->uncore, WM2_LP_ILK) & ~WM_LP_ENABLE);
- intel_uncore_write(&dev_priv->uncore, WM1_LP_ILK, intel_uncore_read(&dev_priv->uncore, WM1_LP_ILK) & ~WM_LP_ENABLE);
-
- /*
- * Don't touch WM_LP_SPRITE_ENABLE here.
- * Doing so could cause underruns.
- */
-}
-
-void ilk_wm_get_hw_state(struct drm_i915_private *dev_priv)
-{
- struct ilk_wm_values *hw = &dev_priv->display.wm.hw;
- struct intel_crtc *crtc;
-
- ilk_init_lp_watermarks(dev_priv);
-
- for_each_intel_crtc(&dev_priv->drm, crtc)
- ilk_pipe_wm_get_hw_state(crtc);
-
- hw->wm_lp[0] = intel_uncore_read(&dev_priv->uncore, WM1_LP_ILK);
- hw->wm_lp[1] = intel_uncore_read(&dev_priv->uncore, WM2_LP_ILK);
- hw->wm_lp[2] = intel_uncore_read(&dev_priv->uncore, WM3_LP_ILK);
-
- hw->wm_lp_spr[0] = intel_uncore_read(&dev_priv->uncore, WM1S_LP_ILK);
- if (DISPLAY_VER(dev_priv) >= 7) {
- hw->wm_lp_spr[1] = intel_uncore_read(&dev_priv->uncore, WM2S_LP_IVB);
- hw->wm_lp_spr[2] = intel_uncore_read(&dev_priv->uncore, WM3S_LP_IVB);
- }
-
- if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
- hw->partitioning = (intel_uncore_read(&dev_priv->uncore, WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ?
- INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2;
- else if (IS_IVYBRIDGE(dev_priv))
- hw->partitioning = (intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL2) & DISP_DATA_PARTITION_5_6) ?
- INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2;
-
- hw->enable_fbc_wm =
- !(intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) & DISP_FBC_WM_DIS);
-}
-
-static void ibx_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- /*
- * On Ibex Peak and Cougar Point, we need to disable clock
- * gating for the panel power sequencer or it will fail to
- * start up when no ports are active.
- */
- intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
-}
-
-static void g4x_disable_trickle_feed(struct drm_i915_private *dev_priv)
-{
- enum pipe pipe;
-
- for_each_pipe(dev_priv, pipe) {
- intel_uncore_write(&dev_priv->uncore, DSPCNTR(pipe),
- intel_uncore_read(&dev_priv->uncore, DSPCNTR(pipe)) |
- DISP_TRICKLE_FEED_DISABLE);
-
- intel_uncore_write(&dev_priv->uncore, DSPSURF(pipe), intel_uncore_read(&dev_priv->uncore, DSPSURF(pipe)));
- intel_uncore_posting_read(&dev_priv->uncore, DSPSURF(pipe));
- }
-}
-
-static void ilk_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- u32 dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
-
- /*
- * Required for FBC
- * WaFbcDisableDpfcClockGating:ilk
- */
- dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE |
- ILK_DPFCUNIT_CLOCK_GATE_DISABLE |
- ILK_DPFDUNIT_CLOCK_GATE_ENABLE;
-
- intel_uncore_write(&dev_priv->uncore, PCH_3DCGDIS0,
- MARIUNIT_CLOCK_GATE_DISABLE |
- SVSMUNIT_CLOCK_GATE_DISABLE);
- intel_uncore_write(&dev_priv->uncore, PCH_3DCGDIS1,
- VFMUNIT_CLOCK_GATE_DISABLE);
-
- /*
- * According to the spec the following bits should be set in
- * order to enable memory self-refresh
- * The bit 22/21 of 0x42004
- * The bit 5 of 0x42020
- * The bit 15 of 0x45000
- */
- intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2,
- (intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) |
- ILK_DPARB_GATE | ILK_VSDPFD_FULL));
- dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE;
- intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL,
- (intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
- DISP_FBC_WM_DIS));
-
- /*
- * Based on the document from hardware guys the following bits
- * should be set unconditionally in order to enable FBC.
- * The bit 22 of 0x42000
- * The bit 22 of 0x42004
- * The bit 7,8,9 of 0x42020.
- */
- if (IS_IRONLAKE_M(dev_priv)) {
- /* WaFbcAsynchFlipDisableFbcQueue:ilk */
- intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1,
- intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1) |
- ILK_FBCQ_DIS);
- intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2,
- intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) |
- ILK_DPARB_GATE);
- }
-
- intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D, dspclk_gate);
-
- intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2,
- intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) |
- ILK_ELPIN_409_SELECT);
-
- g4x_disable_trickle_feed(dev_priv);
-
- ibx_init_clock_gating(dev_priv);
-}
-
-static void cpt_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- enum pipe pipe;
- u32 val;
-
- /*
- * On Ibex Peak and Cougar Point, we need to disable clock
- * gating for the panel power sequencer or it will fail to
- * start up when no ports are active.
- */
- intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE |
- PCH_DPLUNIT_CLOCK_GATE_DISABLE |
- PCH_CPUNIT_CLOCK_GATE_DISABLE);
- intel_uncore_write(&dev_priv->uncore, SOUTH_CHICKEN2, intel_uncore_read(&dev_priv->uncore, SOUTH_CHICKEN2) |
- DPLS_EDP_PPS_FIX_DIS);
- /* The below fixes the weird display corruption, a few pixels shifted
- * downward, on (only) LVDS of some HP laptops with IVY.
- */
- for_each_pipe(dev_priv, pipe) {
- val = intel_uncore_read(&dev_priv->uncore, TRANS_CHICKEN2(pipe));
- val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
- val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED;
- if (dev_priv->display.vbt.fdi_rx_polarity_inverted)
- val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED;
- val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER;
- val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH;
- intel_uncore_write(&dev_priv->uncore, TRANS_CHICKEN2(pipe), val);
- }
- /* WADP0ClockGatingDisable */
- for_each_pipe(dev_priv, pipe) {
- intel_uncore_write(&dev_priv->uncore, TRANS_CHICKEN1(pipe),
- TRANS_CHICKEN1_DP0UNIT_GC_DISABLE);
- }
-}
-
-static void gen6_check_mch_setup(struct drm_i915_private *dev_priv)
-{
- u32 tmp;
-
- tmp = intel_uncore_read(&dev_priv->uncore, MCH_SSKPD);
- if (REG_FIELD_GET(SSKPD_WM0_MASK_SNB, tmp) != 12)
- drm_dbg_kms(&dev_priv->drm,
- "Wrong MCH_SSKPD value: 0x%08x This can cause underruns.\n",
- tmp);
-}
-
-static void gen6_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- u32 dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
-
- intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D, dspclk_gate);
-
- intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2,
- intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) |
- ILK_ELPIN_409_SELECT);
-
- intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1,
- intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) |
- GEN6_BLBUNIT_CLOCK_GATE_DISABLE |
- GEN6_CSUNIT_CLOCK_GATE_DISABLE);
-
- /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock
- * gating disable must be set. Failure to set it results in
- * flickering pixels due to Z write ordering failures after
- * some amount of runtime in the Mesa "fire" demo, and Unigine
- * Sanctuary and Tropics, and apparently anything else with
- * alpha test or pixel discard.
- *
- * According to the spec, bit 11 (RCCUNIT) must also be set,
- * but we didn't debug actual testcases to find it out.
- *
- * WaDisableRCCUnitClockGating:snb
- * WaDisableRCPBUnitClockGating:snb
- */
- intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL2,
- GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
- GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
-
- /*
- * According to the spec the following bits should be
- * set in order to enable memory self-refresh and fbc:
- * The bit21 and bit22 of 0x42000
- * The bit21 and bit22 of 0x42004
- * The bit5 and bit7 of 0x42020
- * The bit14 of 0x70180
- * The bit14 of 0x71180
- *
- * WaFbcAsynchFlipDisableFbcQueue:snb
- */
- intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1,
- intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1) |
- ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS);
- intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2,
- intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN2) |
- ILK_DPARB_GATE | ILK_VSDPFD_FULL);
- intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D,
- intel_uncore_read(&dev_priv->uncore, ILK_DSPCLK_GATE_D) |
- ILK_DPARBUNIT_CLOCK_GATE_ENABLE |
- ILK_DPFDUNIT_CLOCK_GATE_ENABLE);
-
- g4x_disable_trickle_feed(dev_priv);
-
- cpt_init_clock_gating(dev_priv);
-
- gen6_check_mch_setup(dev_priv);
-}
-
-static void lpt_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- /*
- * TODO: this bit should only be enabled when really needed, then
- * disabled when not needed anymore in order to save power.
- */
- if (HAS_PCH_LPT_LP(dev_priv))
- intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D,
- intel_uncore_read(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D) |
- PCH_LP_PARTITION_LEVEL_DISABLE);
-
- /* WADPOClockGatingDisable:hsw */
- intel_uncore_write(&dev_priv->uncore, TRANS_CHICKEN1(PIPE_A),
- intel_uncore_read(&dev_priv->uncore, TRANS_CHICKEN1(PIPE_A)) |
- TRANS_CHICKEN1_DP0UNIT_GC_DISABLE);
-}
-
-static void lpt_suspend_hw(struct drm_i915_private *dev_priv)
-{
- if (HAS_PCH_LPT_LP(dev_priv)) {
- u32 val = intel_uncore_read(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D);
-
- val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
- intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, val);
- }
-}
-
-static void gen8_set_l3sqc_credits(struct drm_i915_private *dev_priv,
- int general_prio_credits,
- int high_prio_credits)
-{
- u32 misccpctl;
- u32 val;
-
- /* WaTempDisableDOPClkGating:bdw */
- misccpctl = intel_uncore_read(&dev_priv->uncore, GEN7_MISCCPCTL);
- intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE);
-
- val = intel_uncore_read(&dev_priv->uncore, GEN8_L3SQCREG1);
- val &= ~L3_PRIO_CREDITS_MASK;
- val |= L3_GENERAL_PRIO_CREDITS(general_prio_credits);
- val |= L3_HIGH_PRIO_CREDITS(high_prio_credits);
- intel_uncore_write(&dev_priv->uncore, GEN8_L3SQCREG1, val);
-
- /*
- * Wait at least 100 clocks before re-enabling clock gating.
- * See the definition of L3SQCREG1 in BSpec.
- */
- intel_uncore_posting_read(&dev_priv->uncore, GEN8_L3SQCREG1);
- udelay(1);
- intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, misccpctl);
-}
-
-static void icl_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- /* Wa_1409120013:icl,ehl */
- intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
- DPFC_CHICKEN_COMP_DUMMY_PIXEL);
-
- /*Wa_14010594013:icl, ehl */
- intel_uncore_rmw(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1,
- 0, ICL_DELAY_PMRSP);
-}
-
-static void gen12lp_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- /* Wa_1409120013 */
- if (DISPLAY_VER(dev_priv) == 12)
- intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
- DPFC_CHICKEN_COMP_DUMMY_PIXEL);
-
- /* Wa_1409825376:tgl (pre-prod)*/
- if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_C0))
- intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_3, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_3) |
- TGL_VRH_GATING_DIS);
-
- /* Wa_14013723622:tgl,rkl,dg1,adl-s */
- if (DISPLAY_VER(dev_priv) == 12)
- intel_uncore_rmw(&dev_priv->uncore, CLKREQ_POLICY,
- CLKREQ_POLICY_MEM_UP_OVRD, 0);
-}
-
-static void adlp_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- gen12lp_init_clock_gating(dev_priv);
-
- /* Wa_22011091694:adlp */
- intel_de_rmw(dev_priv, GEN9_CLKGATE_DIS_5, 0, DPCE_GATING_DIS);
-
- /* Bspec/49189 Initialize Sequence */
- intel_de_rmw(dev_priv, GEN8_CHICKEN_DCPR_1, DDI_CLOCK_REG_ACCESS, 0);
-}
-
-static void dg1_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- gen12lp_init_clock_gating(dev_priv);
-
- /* Wa_1409836686:dg1[a0] */
- if (IS_DG1_GRAPHICS_STEP(dev_priv, STEP_A0, STEP_B0))
- intel_uncore_write(&dev_priv->uncore, GEN9_CLKGATE_DIS_3, intel_uncore_read(&dev_priv->uncore, GEN9_CLKGATE_DIS_3) |
- DPT_GATING_DIS);
-}
-
-static void xehpsdv_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- /* Wa_22010146351:xehpsdv */
- if (IS_XEHPSDV_GRAPHICS_STEP(dev_priv, STEP_A0, STEP_B0))
- intel_uncore_rmw(&dev_priv->uncore, XEHP_CLOCK_GATE_DIS, 0, SGR_DIS);
-}
-
-static void dg2_init_clock_gating(struct drm_i915_private *i915)
-{
- /* Wa_22010954014:dg2 */
- intel_uncore_rmw(&i915->uncore, XEHP_CLOCK_GATE_DIS, 0,
- SGSI_SIDECLK_DIS);
-
- /*
- * Wa_14010733611:dg2_g10
- * Wa_22010146351:dg2_g10
- */
- if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_B0))
- intel_uncore_rmw(&i915->uncore, XEHP_CLOCK_GATE_DIS, 0,
- SGR_DIS | SGGI_DIS);
-}
-
-static void pvc_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- /* Wa_14012385139:pvc */
- if (IS_PVC_BD_STEP(dev_priv, STEP_A0, STEP_B0))
- intel_uncore_rmw(&dev_priv->uncore, XEHP_CLOCK_GATE_DIS, 0, SGR_DIS);
-
- /* Wa_22010954014:pvc */
- if (IS_PVC_BD_STEP(dev_priv, STEP_A0, STEP_B0))
- intel_uncore_rmw(&dev_priv->uncore, XEHP_CLOCK_GATE_DIS, 0, SGSI_SIDECLK_DIS);
-}
-
-static void cnp_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- if (!HAS_PCH_CNP(dev_priv))
- return;
-
- /* Display WA #1181 WaSouthDisplayDisablePWMCGEGating: cnp */
- intel_uncore_write(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D, intel_uncore_read(&dev_priv->uncore, SOUTH_DSPCLK_GATE_D) |
- CNP_PWM_CGE_GATING_DISABLE);
-}
-
-static void cfl_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- cnp_init_clock_gating(dev_priv);
- gen9_init_clock_gating(dev_priv);
-
- /* WAC6entrylatency:cfl */
- intel_uncore_write(&dev_priv->uncore, FBC_LLC_READ_CTRL, intel_uncore_read(&dev_priv->uncore, FBC_LLC_READ_CTRL) |
- FBC_LLC_FULLY_OPEN);
-
- /*
- * WaFbcTurnOffFbcWatermark:cfl
- * Display WA #0562: cfl
- */
- intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
- DISP_FBC_WM_DIS);
-
- /*
- * WaFbcNukeOnHostModify:cfl
- * Display WA #0873: cfl
- */
- intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
- intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A)) |
- DPFC_NUKE_ON_ANY_MODIFICATION);
-}
-
-static void kbl_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- gen9_init_clock_gating(dev_priv);
-
- /* WAC6entrylatency:kbl */
- intel_uncore_write(&dev_priv->uncore, FBC_LLC_READ_CTRL, intel_uncore_read(&dev_priv->uncore, FBC_LLC_READ_CTRL) |
- FBC_LLC_FULLY_OPEN);
-
- /* WaDisableSDEUnitClockGating:kbl */
- if (IS_KBL_GRAPHICS_STEP(dev_priv, 0, STEP_C0))
- intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) |
- GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
-
- /* WaDisableGamClockGating:kbl */
- if (IS_KBL_GRAPHICS_STEP(dev_priv, 0, STEP_C0))
- intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1, intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) |
- GEN6_GAMUNIT_CLOCK_GATE_DISABLE);
-
- /*
- * WaFbcTurnOffFbcWatermark:kbl
- * Display WA #0562: kbl
- */
- intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
- DISP_FBC_WM_DIS);
-
- /*
- * WaFbcNukeOnHostModify:kbl
- * Display WA #0873: kbl
- */
- intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
- intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A)) |
- DPFC_NUKE_ON_ANY_MODIFICATION);
-}
-
-static void skl_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- gen9_init_clock_gating(dev_priv);
-
- /* WaDisableDopClockGating:skl */
- intel_uncore_write(&dev_priv->uncore, GEN7_MISCCPCTL, intel_uncore_read(&dev_priv->uncore, GEN7_MISCCPCTL) &
- ~GEN7_DOP_CLOCK_GATE_ENABLE);
-
- /* WAC6entrylatency:skl */
- intel_uncore_write(&dev_priv->uncore, FBC_LLC_READ_CTRL, intel_uncore_read(&dev_priv->uncore, FBC_LLC_READ_CTRL) |
- FBC_LLC_FULLY_OPEN);
-
- /*
- * WaFbcTurnOffFbcWatermark:skl
- * Display WA #0562: skl
- */
- intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
- DISP_FBC_WM_DIS);
-
- /*
- * WaFbcNukeOnHostModify:skl
- * Display WA #0873: skl
- */
- intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
- intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A)) |
- DPFC_NUKE_ON_ANY_MODIFICATION);
-
- /*
- * WaFbcHighMemBwCorruptionAvoidance:skl
- * Display WA #0883: skl
- */
- intel_uncore_write(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A),
- intel_uncore_read(&dev_priv->uncore, ILK_DPFC_CHICKEN(INTEL_FBC_A)) |
- DPFC_DISABLE_DUMMY0);
-}
-
-static void bdw_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- enum pipe pipe;
-
- /* WaFbcAsynchFlipDisableFbcQueue:hsw,bdw */
- intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A),
- intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A)) |
- HSW_FBCQ_DIS);
-
- /* WaSwitchSolVfFArbitrationPriority:bdw */
- intel_uncore_write(&dev_priv->uncore, GAM_ECOCHK, intel_uncore_read(&dev_priv->uncore, GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL);
-
- /* WaPsrDPAMaskVBlankInSRD:bdw */
- intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR1_1,
- intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD);
-
- for_each_pipe(dev_priv, pipe) {
- /* WaPsrDPRSUnmaskVBlankInSRD:bdw */
- intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe),
- intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe)) |
- BDW_DPRS_MASK_VBLANK_SRD);
- }
-
- /* WaVSRefCountFullforceMissDisable:bdw */
- /* WaDSRefCountFullforceMissDisable:bdw */
- intel_uncore_write(&dev_priv->uncore, GEN7_FF_THREAD_MODE,
- intel_uncore_read(&dev_priv->uncore, GEN7_FF_THREAD_MODE) &
- ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME));
-
- intel_uncore_write(&dev_priv->uncore, RING_PSMI_CTL(RENDER_RING_BASE),
- _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE));
-
- /* WaDisableSDEUnitClockGating:bdw */
- intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) |
- GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
-
- /* WaProgramL3SqcReg1Default:bdw */
- gen8_set_l3sqc_credits(dev_priv, 30, 2);
-
- /* WaKVMNotificationOnConfigChange:bdw */
- intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR2_1, intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR2_1)
- | KVM_CONFIG_CHANGE_NOTIFICATION_SELECT);
-
- lpt_init_clock_gating(dev_priv);
-
- /* WaDisableDopClockGating:bdw
- *
- * Also see the CHICKEN2 write in bdw_init_workarounds() to disable DOP
- * clock gating.
- */
- intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1,
- intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) | GEN6_EU_TCUNIT_CLOCK_GATE_DISABLE);
-}
-
-static void hsw_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- /* WaFbcAsynchFlipDisableFbcQueue:hsw,bdw */
- intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A),
- intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A)) |
- HSW_FBCQ_DIS);
-
- /* This is required by WaCatErrorRejectionIssue:hsw */
- intel_uncore_write(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
- intel_uncore_read(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
- GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
-
- /* WaSwitchSolVfFArbitrationPriority:hsw */
- intel_uncore_write(&dev_priv->uncore, GAM_ECOCHK, intel_uncore_read(&dev_priv->uncore, GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL);
-
- lpt_init_clock_gating(dev_priv);
-}
-
-static void ivb_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- u32 snpcr;
-
- intel_uncore_write(&dev_priv->uncore, ILK_DSPCLK_GATE_D, ILK_VRHUNIT_CLOCK_GATE_DISABLE);
-
- /* WaFbcAsynchFlipDisableFbcQueue:ivb */
- intel_uncore_write(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1,
- intel_uncore_read(&dev_priv->uncore, ILK_DISPLAY_CHICKEN1) |
- ILK_FBCQ_DIS);
-
- /* WaDisableBackToBackFlipFix:ivb */
- intel_uncore_write(&dev_priv->uncore, IVB_CHICKEN3,
- CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
- CHICKEN3_DGMG_DONE_FIX_DISABLE);
-
- if (IS_IVB_GT1(dev_priv))
- intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2,
- _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
- else {
- /* must write both registers */
- intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2,
- _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
- intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2_GT2,
- _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
- }
-
- /*
- * According to the spec, bit 13 (RCZUNIT) must be set on IVB.
- * This implements the WaDisableRCZUnitClockGating:ivb workaround.
- */
- intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL2,
- GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
-
- /* This is required by WaCatErrorRejectionIssue:ivb */
- intel_uncore_write(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
- intel_uncore_read(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
- GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
-
- g4x_disable_trickle_feed(dev_priv);
-
- snpcr = intel_uncore_read(&dev_priv->uncore, GEN6_MBCUNIT_SNPCR);
- snpcr &= ~GEN6_MBC_SNPCR_MASK;
- snpcr |= GEN6_MBC_SNPCR_MED;
- intel_uncore_write(&dev_priv->uncore, GEN6_MBCUNIT_SNPCR, snpcr);
-
- if (!HAS_PCH_NOP(dev_priv))
- cpt_init_clock_gating(dev_priv);
-
- gen6_check_mch_setup(dev_priv);
-}
-
-static void vlv_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- /* WaDisableBackToBackFlipFix:vlv */
- intel_uncore_write(&dev_priv->uncore, IVB_CHICKEN3,
- CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
- CHICKEN3_DGMG_DONE_FIX_DISABLE);
-
- /* WaDisableDopClockGating:vlv */
- intel_uncore_write(&dev_priv->uncore, GEN7_ROW_CHICKEN2,
- _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
-
- /* This is required by WaCatErrorRejectionIssue:vlv */
- intel_uncore_write(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
- intel_uncore_read(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
- GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
-
- /*
- * According to the spec, bit 13 (RCZUNIT) must be set on IVB.
- * This implements the WaDisableRCZUnitClockGating:vlv workaround.
- */
- intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL2,
- GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
-
- /* WaDisableL3Bank2xClockGate:vlv
- * Disabling L3 clock gating- MMIO 940c[25] = 1
- * Set bit 25, to disable L3_BANK_2x_CLK_GATING */
- intel_uncore_write(&dev_priv->uncore, GEN7_UCGCTL4,
- intel_uncore_read(&dev_priv->uncore, GEN7_UCGCTL4) | GEN7_L3BANK2X_CLOCK_GATE_DISABLE);
-
- /*
- * WaDisableVLVClockGating_VBIIssue:vlv
- * Disable clock gating on th GCFG unit to prevent a delay
- * in the reporting of vblank events.
- */
- intel_uncore_write(&dev_priv->uncore, VLV_GUNIT_CLOCK_GATE, GCFG_DIS);
-}
-
-static void chv_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- /* WaVSRefCountFullforceMissDisable:chv */
- /* WaDSRefCountFullforceMissDisable:chv */
- intel_uncore_write(&dev_priv->uncore, GEN7_FF_THREAD_MODE,
- intel_uncore_read(&dev_priv->uncore, GEN7_FF_THREAD_MODE) &
- ~(GEN8_FF_DS_REF_CNT_FFME | GEN7_FF_VS_REF_CNT_FFME));
-
- /* WaDisableSemaphoreAndSyncFlipWait:chv */
- intel_uncore_write(&dev_priv->uncore, RING_PSMI_CTL(RENDER_RING_BASE),
- _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE));
-
- /* WaDisableCSUnitClockGating:chv */
- intel_uncore_write(&dev_priv->uncore, GEN6_UCGCTL1, intel_uncore_read(&dev_priv->uncore, GEN6_UCGCTL1) |
- GEN6_CSUNIT_CLOCK_GATE_DISABLE);
-
- /* WaDisableSDEUnitClockGating:chv */
- intel_uncore_write(&dev_priv->uncore, GEN8_UCGCTL6, intel_uncore_read(&dev_priv->uncore, GEN8_UCGCTL6) |
- GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
-
- /*
- * WaProgramL3SqcReg1Default:chv
- * See gfxspecs/Related Documents/Performance Guide/
- * LSQC Setting Recommendations.
- */
- gen8_set_l3sqc_credits(dev_priv, 38, 2);
-}
-
-static void g4x_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- u32 dspclk_gate;
-
- intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D1, 0);
- intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
- GS_UNIT_CLOCK_GATE_DISABLE |
- CL_UNIT_CLOCK_GATE_DISABLE);
- intel_uncore_write(&dev_priv->uncore, RAMCLK_GATE_D, 0);
- dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
- OVRUNIT_CLOCK_GATE_DISABLE |
- OVCUNIT_CLOCK_GATE_DISABLE;
- if (IS_GM45(dev_priv))
- dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
- intel_uncore_write(&dev_priv->uncore, DSPCLK_GATE_D(dev_priv), dspclk_gate);
-
- g4x_disable_trickle_feed(dev_priv);
-}
-
-static void i965gm_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- struct intel_uncore *uncore = &dev_priv->uncore;
-
- intel_uncore_write(uncore, RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
- intel_uncore_write(uncore, RENCLK_GATE_D2, 0);
- intel_uncore_write(uncore, DSPCLK_GATE_D(dev_priv), 0);
- intel_uncore_write(uncore, RAMCLK_GATE_D, 0);
- intel_uncore_write16(uncore, DEUC, 0);
- intel_uncore_write(uncore,
- MI_ARB_STATE,
- _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE));
-}
-
-static void i965g_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
- I965_RCC_CLOCK_GATE_DISABLE |
- I965_RCPB_CLOCK_GATE_DISABLE |
- I965_ISC_CLOCK_GATE_DISABLE |
- I965_FBC_CLOCK_GATE_DISABLE);
- intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D2, 0);
- intel_uncore_write(&dev_priv->uncore, MI_ARB_STATE,
- _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE));
-}
-
-static void gen3_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- u32 dstate = intel_uncore_read(&dev_priv->uncore, D_STATE);
-
- dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
- DSTATE_DOT_CLOCK_GATING;
- intel_uncore_write(&dev_priv->uncore, D_STATE, dstate);
-
- if (IS_PINEVIEW(dev_priv))
- intel_uncore_write(&dev_priv->uncore, ECOSKPD(RENDER_RING_BASE),
- _MASKED_BIT_ENABLE(ECO_GATING_CX_ONLY));
-
- /* IIR "flip pending" means done if this bit is set */
- intel_uncore_write(&dev_priv->uncore, ECOSKPD(RENDER_RING_BASE),
- _MASKED_BIT_DISABLE(ECO_FLIP_DONE));
-
- /* interrupts should cause a wake up from C3 */
- intel_uncore_write(&dev_priv->uncore, INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_INT_EN));
-
- /* On GEN3 we really need to make sure the ARB C3 LP bit is set */
- intel_uncore_write(&dev_priv->uncore, MI_ARB_STATE, _MASKED_BIT_ENABLE(MI_ARB_C3_LP_WRITE_ENABLE));
-
- intel_uncore_write(&dev_priv->uncore, MI_ARB_STATE,
- _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE));
-}
-
-static void i85x_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- intel_uncore_write(&dev_priv->uncore, RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
-
- /* interrupts should cause a wake up from C3 */
- intel_uncore_write(&dev_priv->uncore, MI_STATE, _MASKED_BIT_ENABLE(MI_AGPBUSY_INT_EN) |
- _MASKED_BIT_DISABLE(MI_AGPBUSY_830_MODE));
-
- intel_uncore_write(&dev_priv->uncore, MEM_MODE,
- _MASKED_BIT_ENABLE(MEM_DISPLAY_TRICKLE_FEED_DISABLE));
-
- /*
- * Have FBC ignore 3D activity since we use software
- * render tracking, and otherwise a pure 3D workload
- * (even if it just renders a single frame and then does
- * abosultely nothing) would not allow FBC to recompress
- * until a 2D blit occurs.
- */
- intel_uncore_write(&dev_priv->uncore, SCPD0,
- _MASKED_BIT_ENABLE(SCPD_FBC_IGNORE_3D));
-}
-
-static void i830_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- intel_uncore_write(&dev_priv->uncore, MEM_MODE,
- _MASKED_BIT_ENABLE(MEM_DISPLAY_A_TRICKLE_FEED_DISABLE) |
- _MASKED_BIT_ENABLE(MEM_DISPLAY_B_TRICKLE_FEED_DISABLE));
-}
-
-void intel_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- dev_priv->clock_gating_funcs->init_clock_gating(dev_priv);
-}
-
-void intel_suspend_hw(struct drm_i915_private *dev_priv)
-{
- if (HAS_PCH_LPT(dev_priv))
- lpt_suspend_hw(dev_priv);
-}
-
-static void nop_init_clock_gating(struct drm_i915_private *dev_priv)
-{
- drm_dbg_kms(&dev_priv->drm,
- "No clock gating settings or workarounds applied.\n");
-}
-
-#define CG_FUNCS(platform) \
-static const struct drm_i915_clock_gating_funcs platform##_clock_gating_funcs = { \
- .init_clock_gating = platform##_init_clock_gating, \
-}
-
-CG_FUNCS(pvc);
-CG_FUNCS(dg2);
-CG_FUNCS(xehpsdv);
-CG_FUNCS(adlp);
-CG_FUNCS(dg1);
-CG_FUNCS(gen12lp);
-CG_FUNCS(icl);
-CG_FUNCS(cfl);
-CG_FUNCS(skl);
-CG_FUNCS(kbl);
-CG_FUNCS(bxt);
-CG_FUNCS(glk);
-CG_FUNCS(bdw);
-CG_FUNCS(chv);
-CG_FUNCS(hsw);
-CG_FUNCS(ivb);
-CG_FUNCS(vlv);
-CG_FUNCS(gen6);
-CG_FUNCS(ilk);
-CG_FUNCS(g4x);
-CG_FUNCS(i965gm);
-CG_FUNCS(i965g);
-CG_FUNCS(gen3);
-CG_FUNCS(i85x);
-CG_FUNCS(i830);
-CG_FUNCS(nop);
-#undef CG_FUNCS
-
-/**
- * intel_init_clock_gating_hooks - setup the clock gating hooks
- * @dev_priv: device private
- *
- * Setup the hooks that configure which clocks of a given platform can be
- * gated and also apply various GT and display specific workarounds for these
- * platforms. Note that some GT specific workarounds are applied separately
- * when GPU contexts or batchbuffers start their execution.
- */
-void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv)
-{
- if (IS_PONTEVECCHIO(dev_priv))
- dev_priv->clock_gating_funcs = &pvc_clock_gating_funcs;
- else if (IS_DG2(dev_priv))
- dev_priv->clock_gating_funcs = &dg2_clock_gating_funcs;
- else if (IS_XEHPSDV(dev_priv))
- dev_priv->clock_gating_funcs = &xehpsdv_clock_gating_funcs;
- else if (IS_ALDERLAKE_P(dev_priv))
- dev_priv->clock_gating_funcs = &adlp_clock_gating_funcs;
- else if (IS_DG1(dev_priv))
- dev_priv->clock_gating_funcs = &dg1_clock_gating_funcs;
- else if (GRAPHICS_VER(dev_priv) == 12)
- dev_priv->clock_gating_funcs = &gen12lp_clock_gating_funcs;
- else if (GRAPHICS_VER(dev_priv) == 11)
- dev_priv->clock_gating_funcs = &icl_clock_gating_funcs;
- else if (IS_COFFEELAKE(dev_priv) || IS_COMETLAKE(dev_priv))
- dev_priv->clock_gating_funcs = &cfl_clock_gating_funcs;
- else if (IS_SKYLAKE(dev_priv))
- dev_priv->clock_gating_funcs = &skl_clock_gating_funcs;
- else if (IS_KABYLAKE(dev_priv))
- dev_priv->clock_gating_funcs = &kbl_clock_gating_funcs;
- else if (IS_BROXTON(dev_priv))
- dev_priv->clock_gating_funcs = &bxt_clock_gating_funcs;
- else if (IS_GEMINILAKE(dev_priv))
- dev_priv->clock_gating_funcs = &glk_clock_gating_funcs;
- else if (IS_BROADWELL(dev_priv))
- dev_priv->clock_gating_funcs = &bdw_clock_gating_funcs;
- else if (IS_CHERRYVIEW(dev_priv))
- dev_priv->clock_gating_funcs = &chv_clock_gating_funcs;
- else if (IS_HASWELL(dev_priv))
- dev_priv->clock_gating_funcs = &hsw_clock_gating_funcs;
- else if (IS_IVYBRIDGE(dev_priv))
- dev_priv->clock_gating_funcs = &ivb_clock_gating_funcs;
- else if (IS_VALLEYVIEW(dev_priv))
- dev_priv->clock_gating_funcs = &vlv_clock_gating_funcs;
- else if (GRAPHICS_VER(dev_priv) == 6)
- dev_priv->clock_gating_funcs = &gen6_clock_gating_funcs;
- else if (GRAPHICS_VER(dev_priv) == 5)
- dev_priv->clock_gating_funcs = &ilk_clock_gating_funcs;
- else if (IS_G4X(dev_priv))
- dev_priv->clock_gating_funcs = &g4x_clock_gating_funcs;
- else if (IS_I965GM(dev_priv))
- dev_priv->clock_gating_funcs = &i965gm_clock_gating_funcs;
- else if (IS_I965G(dev_priv))
- dev_priv->clock_gating_funcs = &i965g_clock_gating_funcs;
- else if (GRAPHICS_VER(dev_priv) == 3)
- dev_priv->clock_gating_funcs = &gen3_clock_gating_funcs;
- else if (IS_I85X(dev_priv) || IS_I865G(dev_priv))
- dev_priv->clock_gating_funcs = &i85x_clock_gating_funcs;
- else if (GRAPHICS_VER(dev_priv) == 2)
- dev_priv->clock_gating_funcs = &i830_clock_gating_funcs;
- else {
- MISSING_CASE(INTEL_DEVID(dev_priv));
- dev_priv->clock_gating_funcs = &nop_clock_gating_funcs;
- }
-}
-
-static const struct intel_wm_funcs ilk_wm_funcs = {
- .compute_pipe_wm = ilk_compute_pipe_wm,
- .compute_intermediate_wm = ilk_compute_intermediate_wm,
- .initial_watermarks = ilk_initial_watermarks,
- .optimize_watermarks = ilk_optimize_watermarks,
-};
-
-static const struct intel_wm_funcs vlv_wm_funcs = {
- .compute_pipe_wm = vlv_compute_pipe_wm,
- .compute_intermediate_wm = vlv_compute_intermediate_wm,
- .initial_watermarks = vlv_initial_watermarks,
- .optimize_watermarks = vlv_optimize_watermarks,
- .atomic_update_watermarks = vlv_atomic_update_fifo,
-};
-
-static const struct intel_wm_funcs g4x_wm_funcs = {
- .compute_pipe_wm = g4x_compute_pipe_wm,
- .compute_intermediate_wm = g4x_compute_intermediate_wm,
- .initial_watermarks = g4x_initial_watermarks,
- .optimize_watermarks = g4x_optimize_watermarks,
-};
-
-static const struct intel_wm_funcs pnv_wm_funcs = {
- .update_wm = pnv_update_wm,
-};
-
-static const struct intel_wm_funcs i965_wm_funcs = {
- .update_wm = i965_update_wm,
-};
-
-static const struct intel_wm_funcs i9xx_wm_funcs = {
- .update_wm = i9xx_update_wm,
-};
-
-static const struct intel_wm_funcs i845_wm_funcs = {
- .update_wm = i845_update_wm,
-};
-
-static const struct intel_wm_funcs nop_funcs = {
-};
-
-/* Set up chip specific power management-related functions */
-void intel_init_pm(struct drm_i915_private *dev_priv)
-{
- if (DISPLAY_VER(dev_priv) >= 9) {
- skl_wm_init(dev_priv);
- return;
- }
-
- /* For cxsr */
- if (IS_PINEVIEW(dev_priv))
- pnv_get_mem_freq(dev_priv);
- else if (GRAPHICS_VER(dev_priv) == 5)
- ilk_get_mem_freq(dev_priv);
-
- /* For FIFO watermark updates */
- if (HAS_PCH_SPLIT(dev_priv)) {
- ilk_setup_wm_latency(dev_priv);
-
- if ((DISPLAY_VER(dev_priv) == 5 && dev_priv->display.wm.pri_latency[1] &&
- dev_priv->display.wm.spr_latency[1] && dev_priv->display.wm.cur_latency[1]) ||
- (DISPLAY_VER(dev_priv) != 5 && dev_priv->display.wm.pri_latency[0] &&
- dev_priv->display.wm.spr_latency[0] && dev_priv->display.wm.cur_latency[0])) {
- dev_priv->display.funcs.wm = &ilk_wm_funcs;
- } else {
- drm_dbg_kms(&dev_priv->drm,
- "Failed to read display plane latency. "
- "Disable CxSR\n");
- dev_priv->display.funcs.wm = &nop_funcs;
- }
- } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
- vlv_setup_wm_latency(dev_priv);
- dev_priv->display.funcs.wm = &vlv_wm_funcs;
- } else if (IS_G4X(dev_priv)) {
- g4x_setup_wm_latency(dev_priv);
- dev_priv->display.funcs.wm = &g4x_wm_funcs;
- } else if (IS_PINEVIEW(dev_priv)) {
- if (!intel_get_cxsr_latency(!IS_MOBILE(dev_priv),
- dev_priv->is_ddr3,
- dev_priv->fsb_freq,
- dev_priv->mem_freq)) {
- drm_info(&dev_priv->drm,
- "failed to find known CxSR latency "
- "(found ddr%s fsb freq %d, mem freq %d), "
- "disabling CxSR\n",
- (dev_priv->is_ddr3 == 1) ? "3" : "2",
- dev_priv->fsb_freq, dev_priv->mem_freq);
- /* Disable CxSR and never update its watermark again */
- intel_set_memory_cxsr(dev_priv, false);
- dev_priv->display.funcs.wm = &nop_funcs;
- } else
- dev_priv->display.funcs.wm = &pnv_wm_funcs;
- } else if (DISPLAY_VER(dev_priv) == 4) {
- dev_priv->display.funcs.wm = &i965_wm_funcs;
- } else if (DISPLAY_VER(dev_priv) == 3) {
- dev_priv->display.funcs.wm = &i9xx_wm_funcs;
- } else if (DISPLAY_VER(dev_priv) == 2) {
- if (INTEL_NUM_PIPES(dev_priv) == 1)
- dev_priv->display.funcs.wm = &i845_wm_funcs;
- else
- dev_priv->display.funcs.wm = &i9xx_wm_funcs;
- } else {
- drm_err(&dev_priv->drm,
- "unexpected fall-through in %s\n", __func__);
- dev_priv->display.funcs.wm = &nop_funcs;
- }
-}
-
-void intel_pm_setup(struct drm_i915_private *dev_priv)
-{
- dev_priv->runtime_pm.suspended = false;
- atomic_set(&dev_priv->runtime_pm.wakeref_count, 0);
-}
--
2.34.1
