include/linux/soc/qcom/llcc-qcom.h | 178 +++++++++++++++
5 files changed, 770 insertions(+)
create mode 100644 drivers/soc/qcom/llcc-sdm845.c
create mode 100644 drivers/soc/qcom/llcc-slice.c
create mode 100644 include/linux/soc/qcom/llcc-qcom.h
diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
index e050eb8..28237fc 100644
--- a/drivers/soc/qcom/Kconfig
+++ b/drivers/soc/qcom/Kconfig
@@ -21,6 +21,22 @@ config QCOM_GSBI
functions for connecting the underlying serial UART, SPI,
and I2C
devices to the output pins.
+config QCOM_LLCC
+ tristate "Qualcomm Technologies, Inc. LLCC driver"
+ depends on ARCH_QCOM
+ help
+ Qualcomm Technologies, Inc. platform specific LLCC driver for
Last
+ Level Cache. This provides interfaces to client's that use
the
LLCC.
+ Say yes here to enable LLCC slice driver.
+
+config QCOM_SDM845_LLCC
+ tristate "Qualcomm Technologies, Inc. SDM845 LLCC driver"
+ depends on QCOM_LLCC
+ help
+ Say yes here to enable the LLCC driver for SDM845. This is
provides
+ data required to configure LLCC so that clients can start
using the
+ LLCC slices.
+
config QCOM_MDT_LOADER
tristate
select QCOM_SCM
diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile
index dcebf28..e16d6a2 100644
--- a/drivers/soc/qcom/Makefile
+++ b/drivers/soc/qcom/Makefile
@@ -12,3 +12,5 @@ obj-$(CONFIG_QCOM_SMEM_STATE) += smem_state.o
obj-$(CONFIG_QCOM_SMP2P) += smp2p.o
obj-$(CONFIG_QCOM_SMSM) += smsm.o
obj-$(CONFIG_QCOM_WCNSS_CTRL) += wcnss_ctrl.o
+obj-$(CONFIG_QCOM_LLCC) += llcc-slice.o
+obj-$(CONFIG_QCOM_SDM845_LLCC) += llcc-sdm845.o
diff --git a/drivers/soc/qcom/llcc-sdm845.c
b/drivers/soc/qcom/llcc-sdm845.c
new file mode 100644
index 0000000..cd431d9
--- /dev/null
+++ b/drivers/soc/qcom/llcc-sdm845.c
@@ -0,0 +1,120 @@
+/* Copyright (c) 2017-2018, The Linux Foundation. All rights
reserved.
+ *
+ * This program is free software; you can redistribute it and/or
modify
+ * it under the terms of the GNU General Public License version 2
and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/soc/qcom/llcc-qcom.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+
+
+/*
+ * SCT entry contains of the following parameters
+ * name: Name of the client's use case for which the llcc slice is
used
+ * uid: Unique id for the client's use case
+ * slice_id: llcc slice id for each client
+ * max_cap: The maximum capacity of the cache slice provided in KB
+ * priority: Priority of the client used to select victim line for
replacement
+ * fixed_size: Determine of the slice has a fixed capacity
+ * bonus_ways: Bonus ways to be used by any slice, bonus way is
used
only if
+ * it't not a reserved way.
+ * res_ways: Reserved ways for the cache slice, the reserved ways
cannot be used
+ * by any other client than the one its assigned to.
+ * cache_mode: Each slice operates as a cache, this controls the
mode of the
+ * slice normal or TCM
+ * probe_target_ways: Determines what ways to probe for access hit.
When
+ * configured to 1 only bonus and reseved ways
are probed.
+ * when configured to 0 all ways in llcc are
probed.
+ * dis_cap_alloc: Disable capacity based allocation for a client
+ * retain_on_pc: If this bit is set and client has maitained active
vote
+ * then the ways assigned to this client are not
flushed on power
+ * collapse.
+ * activate_on_init: Activate the slice immidiately after the SCT
is
programmed
+ */
+#define SCT_ENTRY(n, uid, sid, mc, p, fs, bway, rway, cmod, ptw,
dca, rp, a) \
+ { \
+ .name = n, \
+ .usecase_id = uid, \
+ .slice_id = sid, \
+ .max_cap = mc, \
+ .priority = p, \
+ .fixed_size = fs, \
+ .bonus_ways = bway, \
+ .res_ways = rway, \
+ .cache_mode = cmod, \
+ .probe_target_ways = ptw, \
+ .dis_cap_alloc = dca, \
+ .retain_on_pc = rp, \
+ .activate_on_init = a, \
+ }
+
+
+static struct llcc_slice_config sdm845_data[] = {
+ SCT_ENTRY("cpuss", 1, 1, 2816, 1, 0, 0xFFC, 0x2, 0, 0, 1,
1, 1),
+ SCT_ENTRY("vidsc0", 2, 2, 512, 2, 1, 0x0, 0x0F0, 0, 0, 1,
1, 0),
+ SCT_ENTRY("vidsc1", 3, 3, 512, 2, 1, 0x0, 0x0F0, 0, 0, 1,
1, 0),
+ SCT_ENTRY("rotator", 4, 4, 563, 2, 1, 0x0, 0x00e, 2, 0, 1,
1, 0),
+ SCT_ENTRY("voice", 5, 5, 2816, 1, 0, 0xFFC, 0x2, 0, 0, 1,
1, 0),
+ SCT_ENTRY("audio", 6, 6, 2816, 1, 0, 0xFFC, 0x2, 0, 0, 1,
1, 0),
+ SCT_ENTRY("modemhp_grow", 7, 7, 1024, 2, 0, 0x0FC, 0xF00, 0, 0,
1, 1, 0),
+ SCT_ENTRY("modem", 8, 8, 2816, 1, 0, 0xFFC, 0x2, 0, 0, 1,
1, 0),
+ SCT_ENTRY("compute", 10, 10, 2816, 1, 0, 0xFFC, 0x2, 0, 0,
1, 1, 0),
+ SCT_ENTRY("gpuhtw", 11, 11, 512, 1, 1, 0xC, 0x0, 0, 0, 1,
1, 0),
+ SCT_ENTRY("gpu", 12, 12, 2304, 1, 0, 0xFF0, 0x2, 0, 0,
1, 1, 0),
+ SCT_ENTRY("mmuhwt", 13, 13, 256, 2, 0, 0x0, 0x1, 0, 0, 1,
0, 1),
+ SCT_ENTRY("compute_dma", 15, 15, 2816, 1, 0, 0xFFC, 0x2, 0, 0,
1, 1, 0),
+ SCT_ENTRY("display", 16, 16, 2816, 1, 0, 0xFFC, 0x2, 0, 0,
1, 1, 0),
+ SCT_ENTRY("videofw", 17, 17, 2816, 1, 0, 0xFFC, 0x2, 0, 0,
1, 1, 0),
+ SCT_ENTRY("modemhp_fix", 20, 20, 1024, 2, 1, 0x0, 0xF00, 0, 0,
1, 1, 0),
+ SCT_ENTRY("modem_paging", 21, 21, 1024, 0, 1, 0x1e, 0x0, 0, 0,
1, 1, 0),
+ SCT_ENTRY("audiohw", 22, 22, 1024, 1, 1, 0xFFC, 0x2, 0, 0,
1, 1, 0),
+};
+
+
+static int sdm845_qcom_llcc_probe(struct platform_device *pdev)
+{
+ return qcom_llcc_probe(pdev, sdm845_data,
ARRAY_SIZE(sdm845_data));
