From: John Harrison <John.C.Harrison@xxxxxxxxx>
Implement support for fetching the hardware description table from the
GuC. The call is made twice - once without a destination buffer to
query the size and then a second time to fill in the buffer.
This patch also adds a header file which lists all the attribute values
currently defined for the table. This is included for reference as
these are not currently used by the i915 driver itself.
Note that the table is only available on ADL-P and later platforms.
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx>
---
drivers/gpu/drm/i915/Makefile | 1 +
.../gpu/drm/i915/gt/intel_hwconfig_types.h | 102 +++++++++++
.../gpu/drm/i915/gt/uc/abi/guc_actions_abi.h | 1 +
.../gpu/drm/i915/gt/uc/abi/guc_errors_abi.h | 4 +
drivers/gpu/drm/i915/gt/uc/intel_guc.c | 3 +-
drivers/gpu/drm/i915/gt/uc/intel_guc.h | 2 +
.../gpu/drm/i915/gt/uc/intel_guc_hwconfig.c | 167 ++++++++++++++++++
.../gpu/drm/i915/gt/uc/intel_guc_hwconfig.h | 19 ++
drivers/gpu/drm/i915/gt/uc/intel_uc.c | 6 +
9 files changed, 304 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/i915/gt/intel_hwconfig_types.h
create mode 100644 drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c
create mode 100644 drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.h
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 2adb6b420c7c..8e957ca7c9f1 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -187,6 +187,7 @@ i915-y += gt/uc/intel_uc.o \
gt/uc/intel_guc_log.o \
gt/uc/intel_guc_log_debugfs.o \
gt/uc/intel_guc_submission.o \
+ gt/uc/intel_guc_hwconfig.o \
gt/uc/intel_huc.o \
gt/uc/intel_huc_debugfs.o \
gt/uc/intel_huc_fw.o
diff --git a/drivers/gpu/drm/i915/gt/intel_hwconfig_types.h b/drivers/gpu/drm/i915/gt/intel_hwconfig_types.h
new file mode 100644
index 000000000000..b09c0f65b93a
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_hwconfig_types.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _INTEL_HWCONFIG_TYPES_H_
+#define _INTEL_HWCONFIG_TYPES_H_
+
+/**
+ * enum intel_hwconfig - Global definition of hwconfig table attributes
+ *
+ * Intel devices provide a KLV (Key/Length/Value) table containing
+ * the static hardware configuration for that platform.
+ * This header defines the current attribute keys for this KLV.
+ */
+enum intel_hwconfig {
+ INTEL_HWCONFIG_MAX_SLICES_SUPPORTED = 1,
+ INTEL_HWCONFIG_MAX_DUAL_SUBSLICES_SUPPORTED, /* 2 */
+ INTEL_HWCONFIG_MAX_NUM_EU_PER_DSS, /* 3 */
+ INTEL_HWCONFIG_NUM_PIXEL_PIPES, /* 4 */
+ INTEL_HWCONFIG_DEPRECATED_MAX_NUM_GEOMETRY_PIPES, /* 5 */
+ INTEL_HWCONFIG_DEPRECATED_L3_CACHE_SIZE_IN_KB, /* 6 */
+ INTEL_HWCONFIG_DEPRECATED_L3_BANK_COUNT, /* 7 */
+ INTEL_HWCONFIG_L3_CACHE_WAYS_SIZE_IN_BYTES, /* 8 */
+ INTEL_HWCONFIG_L3_CACHE_WAYS_PER_SECTOR, /* 9 */
+ INTEL_HWCONFIG_MAX_MEMORY_CHANNELS, /* 10 */
+ INTEL_HWCONFIG_MEMORY_TYPE, /* 11 */
+ INTEL_HWCONFIG_CACHE_TYPES, /* 12 */
+ INTEL_HWCONFIG_LOCAL_MEMORY_PAGE_SIZES_SUPPORTED, /* 13 */
+ INTEL_HWCONFIG_DEPRECATED_SLM_SIZE_IN_KB, /* 14 */
+ INTEL_HWCONFIG_NUM_THREADS_PER_EU, /* 15 */
+ INTEL_HWCONFIG_TOTAL_VS_THREADS, /* 16 */
+ INTEL_HWCONFIG_TOTAL_GS_THREADS, /* 17 */
+ INTEL_HWCONFIG_TOTAL_HS_THREADS, /* 18 */
+ INTEL_HWCONFIG_TOTAL_DS_THREADS, /* 19 */
+ INTEL_HWCONFIG_TOTAL_VS_THREADS_POCS, /* 20 */
+ INTEL_HWCONFIG_TOTAL_PS_THREADS, /* 21 */
+ INTEL_HWCONFIG_DEPRECATED_MAX_FILL_RATE, /* 22 */
+ INTEL_HWCONFIG_MAX_RCS, /* 23 */
+ INTEL_HWCONFIG_MAX_CCS, /* 24 */
+ INTEL_HWCONFIG_MAX_VCS, /* 25 */
+ INTEL_HWCONFIG_MAX_VECS, /* 26 */
+ INTEL_HWCONFIG_MAX_COPY_CS, /* 27 */
+ INTEL_HWCONFIG_DEPRECATED_URB_SIZE_IN_KB, /* 28 */
+ INTEL_HWCONFIG_MIN_VS_URB_ENTRIES, /* 29 */
+ INTEL_HWCONFIG_MAX_VS_URB_ENTRIES, /* 30 */
+ INTEL_HWCONFIG_MIN_PCS_URB_ENTRIES, /* 31 */
+ INTEL_HWCONFIG_MAX_PCS_URB_ENTRIES, /* 32 */
+ INTEL_HWCONFIG_MIN_HS_URB_ENTRIES, /* 33 */
+ INTEL_HWCONFIG_MAX_HS_URB_ENTRIES, /* 34 */
+ INTEL_HWCONFIG_MIN_GS_URB_ENTRIES, /* 35 */
+ INTEL_HWCONFIG_MAX_GS_URB_ENTRIES, /* 36 */
+ INTEL_HWCONFIG_MIN_DS_URB_ENTRIES, /* 37 */
+ INTEL_HWCONFIG_MAX_DS_URB_ENTRIES, /* 38 */
+ INTEL_HWCONFIG_PUSH_CONSTANT_URB_RESERVED_SIZE, /* 39 */
+ INTEL_HWCONFIG_POCS_PUSH_CONSTANT_URB_RESERVED_SIZE, /* 40 */
+ INTEL_HWCONFIG_URB_REGION_ALIGNMENT_SIZE_IN_BYTES, /* 41 */
+ INTEL_HWCONFIG_URB_ALLOCATION_SIZE_UNITS_IN_BYTES, /* 42 */
+ INTEL_HWCONFIG_MAX_URB_SIZE_CCS_IN_BYTES, /* 43 */
+ INTEL_HWCONFIG_VS_MIN_DEREF_BLOCK_SIZE_HANDLE_COUNT, /* 44 */
+ INTEL_HWCONFIG_DS_MIN_DEREF_BLOCK_SIZE_HANDLE_COUNT, /* 45 */
+ INTEL_HWCONFIG_NUM_RT_STACKS_PER_DSS, /* 46 */
+ INTEL_HWCONFIG_MAX_URB_STARTING_ADDRESS, /* 47 */
+ INTEL_HWCONFIG_MIN_CS_URB_ENTRIES, /* 48 */
+ INTEL_HWCONFIG_MAX_CS_URB_ENTRIES, /* 49 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_URB, /* 50 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_REST, /* 51 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_DC, /* 52 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_RO, /* 53 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_Z, /* 54 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_COLOR, /* 55 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_UNIFIED_TILE_CACHE, /* 56 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_COMMAND_BUFFER, /* 57 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_RW, /* 58 */
+ INTEL_HWCONFIG_MAX_NUM_L3_CONFIGS, /* 59 */
+ INTEL_HWCONFIG_BINDLESS_SURFACE_OFFSET_BIT_COUNT, /* 60 */
+ INTEL_HWCONFIG_RESERVED_CCS_WAYS, /* 61 */
+ INTEL_HWCONFIG_CSR_SIZE_IN_MB, /* 62 */
+ INTEL_HWCONFIG_GEOMETRY_PIPES_PER_SLICE, /* 63 */
+ INTEL_HWCONFIG_L3_BANK_SIZE_IN_KB, /* 64 */
+ INTEL_HWCONFIG_SLM_SIZE_PER_DSS, /* 65 */
+ INTEL_HWCONFIG_MAX_PIXEL_FILL_RATE_PER_SLICE, /* 66 */
+ INTEL_HWCONFIG_MAX_PIXEL_FILL_RATE_PER_DSS, /* 67 */
+ INTEL_HWCONFIG_URB_SIZE_PER_SLICE_IN_KB, /* 68 */
+ INTEL_HWCONFIG_URB_SIZE_PER_L3_BANK_COUNT_IN_KB, /* 69 */
+ INTEL_HWCONFIG_MAX_SUBSLICE, /* 70 */
+ INTEL_HWCONFIG_MAX_EU_PER_SUBSLICE, /* 71 */
+ INTEL_HWCONFIG_RAMBO_L3_BANK_SIZE_IN_KB, /* 72 */
+ INTEL_HWCONFIG_SLM_SIZE_PER_SS_IN_KB, /* 73 */
+ __INTEL_HWCONFIG_LIMIT
+};
+
+enum {
+ INTEL_HWCONFIG_MEMORY_TYPE_LPDDR4 = 0,
+ INTEL_HWCONFIG_MEMORY_TYPE_LPDDR5,
+};
+
+#define INTEL_HWCONFIG_CACHE_TYPE_L3 BIT(0)
+#define INTEL_HWCONFIG_CACHE_TYPE_LLC BIT(1)
+#define INTEL_HWCONFIG_CACHE_TYPE_EDRAM BIT(2)
+
+#endif /* _INTEL_HWCONFIG_TYPES_H_ */
diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h
index 90efef8a73e4..075f56a040b7 100644
--- a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h
+++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h
@@ -19,6 +19,7 @@ enum intel_guc_action {
INTEL_GUC_ACTION_EXIT_S_STATE = 0x502,
INTEL_GUC_ACTION_SLPC_REQUEST = 0x3003,
INTEL_GUC_ACTION_AUTHENTICATE_HUC = 0x4000,
+ INTEL_GUC_ACTION_GET_HWCONFIG = 0x4100,
INTEL_GUC_ACTION_REGISTER_COMMAND_TRANSPORT_BUFFER = 0x4505,
INTEL_GUC_ACTION_DEREGISTER_COMMAND_TRANSPORT_BUFFER = 0x4506,
INTEL_GUC_ACTION_LIMIT
diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_errors_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_errors_abi.h
index 488b6061ee89..f9e2a6aaef4a 100644
--- a/drivers/gpu/drm/i915/gt/uc/abi/guc_errors_abi.h
+++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_errors_abi.h
@@ -8,6 +8,10 @@
enum intel_guc_response_status {
INTEL_GUC_RESPONSE_STATUS_SUCCESS = 0x0,
+ INTEL_GUC_RESPONSE_NOT_SUPPORTED = 0x20,
+ INTEL_GUC_RESPONSE_NO_ATTRIBUTE_TABLE = 0x201,
+ INTEL_GUC_RESPONSE_NO_DECRYPTION_KEY = 0x202,
+ INTEL_GUC_RESPONSE_DECRYPTION_FAILED = 0x204,
INTEL_GUC_RESPONSE_STATUS_GENERIC_FAIL = 0xF000,
};
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index f147cb389a20..01839d5eb130 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -407,13 +407,14 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len,
/*
* No GuC command should ever take longer than 10ms.
* Fast commands should still complete in 10us.
+ * Except for the hwconfig table query, which takes ~50ms.
*/
ret = __intel_wait_for_register_fw(uncore,
guc_send_reg(guc, 0),
INTEL_GUC_MSG_TYPE_MASK,
INTEL_GUC_MSG_TYPE_RESPONSE <<
INTEL_GUC_MSG_TYPE_SHIFT,
- 10, 10, &status);
+ 10, 100, &status);
/* If GuC explicitly returned an error, convert it to -EIO */
if (!ret && !INTEL_GUC_MSG_IS_RESPONSE_SUCCESS(status))
ret = -EIO;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
index 4abc59f6f3cd..8307de463af0 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
@@ -12,6 +12,7 @@
#include "intel_guc_ct.h"
#include "intel_guc_log.h"
#include "intel_guc_reg.h"
+#include "intel_guc_hwconfig.h"
#include "intel_uc_fw.h"
#include "i915_utils.h"
#include "i915_vma.h"
@@ -27,6 +28,7 @@ struct intel_guc {
struct intel_uc_fw fw;
struct intel_guc_log log;
struct intel_guc_ct ct;
+ struct intel_guc_hwconfig hwconfig;
/* intel_guc_recv interrupt related state */
spinlock_t irq_lock;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c
new file mode 100644
index 000000000000..938b1edb7209
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c
@@ -0,0 +1,167 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include "gt/intel_gt.h"
+#include "gt/intel_hwconfig_types.h"
+#include "i915_drv.h"
+#include "i915_memcpy.h"
+#include "intel_guc_hwconfig.h"
+
+static
+inline struct intel_guc *hwconfig_to_guc(struct intel_guc_hwconfig *hwconfig)
+{
+ return container_of(hwconfig, struct intel_guc, hwconfig);
+}
+
+/**
+ * GuC has a blob containing hardware configuration information (hwconfig).
+ * This is formatted as a simple and flexible KLV (Key/Length/Value) table.
+ *
+ * For example, a minimal version could be:
+ * enum device_attr {
+ * ATTR_SOME_VALUE = 0,
+ * ATTR_SOME_MASK = 1,
+ * };
+ *
+ * static const u32 hwconfig[] = {
+ * ATTR_SOME_VALUE,
+ * 1, // Value Length in DWords
+ * 8, // Value
+ *
+ * ATTR_SOME_MASK,
+ * 3,
+ * 0x00FFFFFFFF, 0xFFFFFFFF, 0xFF000000,
+ * };
+ *
+ * The attribute ids are defined in a hardware spec. The current list as
+ * known to the i915 driver can be found in i915/gt/intel_guc_hwconfig_types.h
+ */
+
+static int __guc_action_get_hwconfig(struct intel_guc_hwconfig *hwconfig,
+ u32 ggtt_offset, u32 ggtt_size)
+{
+ struct intel_guc *guc = hwconfig_to_guc(hwconfig);
+ struct drm_i915_private *i915 = guc_to_gt(guc)->i915;
+ u32 action[] = {
+ INTEL_GUC_ACTION_GET_HWCONFIG,
+ ggtt_offset,
+ ggtt_size,
+ (INTEL_DEVID(i915) << 16) | INTEL_REVID(i915),
+ };
+ int ret;
+
+ ret = intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0);
+ if (ret == -ENXIO)
+ return -ENOENT;
+
+ if (!ggtt_size && !ret)
+ ret = -EINVAL;
+
+ return ret;
+}
+
+static int guc_hwconfig_discover_size(struct intel_guc_hwconfig *hwconfig)
+{
+ int ret;
+
+ /* Sending a query with too small a table will return the size of the table */
+ ret = __guc_action_get_hwconfig(hwconfig, 0, 0);
+ if (ret < 0)
+ return ret;
+
+ hwconfig->size = ret;
+ return 0;
+}
+
+static int guc_hwconfig_fill_buffer(struct intel_guc_hwconfig *hwconfig)
+{
+ struct intel_guc *guc = hwconfig_to_guc(hwconfig);
+ struct drm_i915_private *i915 = guc_to_gt(guc)->i915;
+ u32 ggtt_offset;
+ int ret;
+ struct i915_vma *vma;
+ void *vaddr;
+
+ GEM_BUG_ON(!hwconfig->size);
+
+ ret = intel_guc_allocate_and_map_vma(guc, hwconfig->size, &vma, &vaddr);
+ if (ret) {
+ drm_err(&i915->drm, "HWConfig: Failed to allocate buffer: %d!\n", ret);
+ return ret;
+ }
+
+ ggtt_offset = intel_guc_ggtt_offset(guc, vma);
+
+ ret = __guc_action_get_hwconfig(hwconfig, ggtt_offset, hwconfig->size);
+ if (ret >= 0)
+ memcpy(hwconfig->ptr, vaddr, hwconfig->size);
+
+ i915_vma_unpin_and_release(&vma, I915_VMA_RELEASE_MAP);
+
+ return ret;
+}
+
+static bool has_table(struct drm_i915_private *i915)
+{
+ if (IS_ALDERLAKE_P(i915)) {
+ if (IS_ADLP_GT_STEP(i915, STEP_A0, STEP_A0))
+ return 0;
+
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * intel_guc_hwconfig_init - Initialize the HWConfig
+ *
+ * Retrieve the HWConfig table from the GuC and save it away in a local memory
+ * allocation. It can then be queried on demand by other users later on.
+ */
+int intel_guc_hwconfig_init(struct intel_guc_hwconfig *hwconfig)
+{
+ struct intel_guc *guc = hwconfig_to_guc(hwconfig);
+ struct drm_i915_private *i915 = guc_to_gt(guc)->i915;
+ int ret;
+
+ if (!has_table(i915))
+ return 0;
+
+ ret = guc_hwconfig_discover_size(hwconfig);
+ if (ret)
+ return ret;
+
+ hwconfig->ptr = kmalloc(hwconfig->size, GFP_KERNEL);
+ if (!hwconfig->ptr) {
+ hwconfig->size = 0;
+ return -ENOMEM;
+ }
+
+ ret = guc_hwconfig_fill_buffer(hwconfig);
+ if (ret < 0) {
+ kfree(hwconfig->ptr);
+ hwconfig->size = 0;
+ hwconfig->ptr = NULL;
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * intel_guc_hwconfig_fini - Finalize the HWConfig
+ *
+ * Free up the memory allocation holding the table.
+ */
+void intel_guc_hwconfig_fini(struct intel_guc_hwconfig *hwconfig)
+{
+ if (!hwconfig->size)
+ return;
+
+ kfree(hwconfig->ptr);
+ hwconfig->size = 0;
+ hwconfig->ptr = NULL;
+}
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.h
new file mode 100644
index 000000000000..91e96d88d713
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _INTEL_GUC_HWCONFIG_H_
+#define _INTEL_GUC_HWCONFIG_H_
+
+#include <linux/types.h>
+
+struct intel_guc_hwconfig {
+ u32 size;
+ void *ptr;
+};
+
+int intel_guc_hwconfig_init(struct intel_guc_hwconfig *hwconfig);
+void intel_guc_hwconfig_fini(struct intel_guc_hwconfig *hwconfig);
+
+#endif /* _INTEL_GUC_HWCONFIG_H_ */
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index 6d8b9233214e..b289693f9767 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -502,6 +502,10 @@ static int __uc_init_hw(struct intel_uc *uc)
intel_huc_auth(huc);
+ ret = intel_guc_hwconfig_init(&guc->hwconfig);
+ if (ret)
+ goto err_log_capture;
+
if (intel_uc_uses_guc_submission(uc))
intel_guc_submission_enable(guc);
@@ -552,6 +556,8 @@ static void __uc_fini_hw(struct intel_uc *uc)
if (intel_uc_uses_guc_submission(uc))
intel_guc_submission_disable(guc);
+ intel_guc_hwconfig_fini(&guc->hwconfig);
+
__uc_sanitize(uc);
}
--
2.25.1
