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From 2ba0b9d24785f41d0ab71d3d58c8cc14df71e24c Mon Sep 17 00:00:00 2001
From: Rex Zhu <Rex.Zhu@amd.com>
Date: Wed, 23 Sep 2015 20:11:54 +0800
Subject: [PATCH 0038/1110] drm/amdgpu: implement cgs interface to query system
info
Add a query to get the bus number and function of the
device.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | 23 +++++++++++++++++++++++
drivers/gpu/drm/amd/include/cgs_common.h | 23 +++++++++++++++++++++++
2 files changed, 46 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
index f901cdc..19f46d0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
@@ -736,6 +736,28 @@ static int amdgpu_cgs_get_firmware_info(void *cgs_device,
return 0;
}
+static int amdgpu_cgs_query_system_info(void *cgs_device,
+ struct cgs_system_info *sys_info)
+{
+ CGS_FUNC_ADEV;
+
+ if (NULL == sys_info)
+ return -ENODEV;
+
+ if (sizeof(struct cgs_system_info) != sys_info->size)
+ return -ENODEV;
+
+ switch (sys_info->info_id) {
+ case CGS_SYSTEM_INFO_ADAPTER_BDF_ID:
+ sys_info->value = adev->pdev->devfn | (adev->pdev->bus->number << 8);
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
/** \brief evaluate acpi namespace object, handle or pathname must be valid
* \param cgs_device
* \param info input/output arguments for the control method
@@ -985,6 +1007,7 @@ static const struct cgs_ops amdgpu_cgs_ops = {
amdgpu_cgs_set_powergating_state,
amdgpu_cgs_set_clockgating_state,
amdgpu_cgs_call_acpi_method,
+ amdgpu_cgs_query_system_info,
};
static const struct cgs_os_ops amdgpu_cgs_os_ops = {
diff --git a/drivers/gpu/drm/amd/include/cgs_common.h b/drivers/gpu/drm/amd/include/cgs_common.h
index 8bf6ee5..5ea8db0 100644
--- a/drivers/gpu/drm/amd/include/cgs_common.h
+++ b/drivers/gpu/drm/amd/include/cgs_common.h
@@ -105,6 +105,21 @@ enum cgs_ucode_id {
CGS_UCODE_ID_MAXIMUM,
};
+enum cgs_system_info_id {
+ CGS_SYSTEM_INFO_ADAPTER_BDF_ID = 1,
+ CGS_SYSTEM_INFO_ID_MAXIMUM,
+};
+
+struct cgs_system_info {
+ uint64_t size;
+ uint64_t info_id;
+ union {
+ void *ptr;
+ uint64_t value;
+ };
+ uint64_t padding[13];
+};
+
/**
* struct cgs_clock_limits - Clock limits
*
@@ -533,6 +548,10 @@ typedef int (*cgs_call_acpi_method)(void *cgs_device,
uint32_t output_count,
uint32_t input_size,
uint32_t output_size);
+
+typedef int (*cgs_query_system_info)(void *cgs_device,
+ struct cgs_system_info *sys_info);
+
struct cgs_ops {
/* memory management calls (similar to KFD interface) */
cgs_gpu_mem_info_t gpu_mem_info;
@@ -575,6 +594,8 @@ struct cgs_ops {
cgs_set_clockgating_state set_clockgating_state;
/* ACPI */
cgs_call_acpi_method call_acpi_method;
+ /* get system info */
+ cgs_query_system_info query_system_info;
};
struct cgs_os_ops; /* To be define in OS-specific CGS header */
@@ -663,5 +684,7 @@ struct cgs_device
CGS_CALL(set_clockgating_state, dev, block_type, state)
#define cgs_call_acpi_method(dev, acpi_method, acpi_function, pintput, poutput, output_count, input_size, output_size) \
CGS_CALL(call_acpi_method, dev, acpi_method, acpi_function, pintput, poutput, output_count, input_size, output_size)
+#define cgs_query_system_info(dev, sys_info) \
+ CGS_CALL(query_system_info, dev, sys_info)
#endif /* _CGS_COMMON_H */
--
2.7.4
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