[PATCH 1/2] drm/amdgpu: Reserved vram for smu to save debug info.
Rex Zhu
Rex.Zhu at amd.com
Fri Apr 13 08:19:13 UTC 2018
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 44 +++++++++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h | 2 ++
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 6 ++++
drivers/gpu/drm/amd/powerplay/amd_powerplay.c | 36 ++++++++++++++++++++++
5 files changed, 89 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index c688361..5ef0bc8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -129,6 +129,7 @@
extern int amdgpu_compute_multipipe;
extern int amdgpu_gpu_recovery;
extern int amdgpu_emu_mode;
+extern uint amdgpu_smu_memory_pool_size;
#ifdef CONFIG_DRM_AMDGPU_SI
extern int amdgpu_si_support;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 1762eb4..bcbbd23 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -690,6 +690,8 @@ void amdgpu_device_gart_location(struct amdgpu_device *adev,
{
u64 size_af, size_bf;
+ mc->gart_size += adev->pm.smu_prv_buffer_size;
+
size_af = adev->gmc.mc_mask - mc->vram_end;
size_bf = mc->vram_start;
if (size_bf > size_af) {
@@ -907,6 +909,46 @@ static void amdgpu_device_check_vm_size(struct amdgpu_device *adev)
}
}
+static void amdgpu_device_check_smu_prv_buffer_size(struct amdgpu_device *adev)
+{
+ struct sysinfo si;
+ bool is_os_64 = (sizeof(void *) == 8) ? true : false;
+ uint64_t total_memory;
+ uint64_t dram_size_seven_GB = 0x1B8000000;
+ uint64_t dram_size_three_GB = 0xB8000000;
+
+ if (amdgpu_smu_memory_pool_size == 0)
+ return;
+
+ if (!is_os_64) {
+ DRM_WARN("Not 64-bit OS, feature not supported\n");
+ goto def_value;
+ }
+ si_meminfo(&si);
+ total_memory = (uint64_t)si.totalram * si.mem_unit;
+
+ if ((amdgpu_smu_memory_pool_size == 1) ||
+ (amdgpu_smu_memory_pool_size == 2)) {
+ if (total_memory < dram_size_three_GB)
+ goto def_value1;
+ } else if ((amdgpu_smu_memory_pool_size == 4) ||
+ (amdgpu_smu_memory_pool_size == 8)) {
+ if (total_memory < dram_size_seven_GB)
+ goto def_value1;
+ } else {
+ DRM_WARN("Smu memory pool size not supported\n");
+ goto def_value;
+ }
+ adev->pm.smu_prv_buffer_size = amdgpu_smu_memory_pool_size << 28;
+
+ return;
+
+def_value1:
+ DRM_WARN("No enough system memory\n");
+def_value:
+ adev->pm.smu_prv_buffer_size = 0;
+}
+
/**
* amdgpu_device_check_arguments - validate module params
*
@@ -948,6 +990,8 @@ static void amdgpu_device_check_arguments(struct amdgpu_device *adev)
amdgpu_vm_fragment_size = -1;
}
+ amdgpu_device_check_smu_prv_buffer_size(adev);
+
amdgpu_device_check_vm_size(adev);
amdgpu_device_check_block_size(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
index b8c5177..19d8bf5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
@@ -445,6 +445,8 @@ struct amdgpu_pm {
uint32_t pcie_gen_mask;
uint32_t pcie_mlw_mask;
struct amd_pp_display_configuration pm_display_cfg;/* set by dc */
+ uint32_t smu_prv_buffer_size;
+ struct amdgpu_bo *smu_prv_buffer;
};
#define R600_SSTU_DFLT 0
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 0b19482..5c0567a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -132,6 +132,7 @@
int amdgpu_compute_multipipe = -1;
int amdgpu_gpu_recovery = -1; /* auto */
int amdgpu_emu_mode = 0;
+uint amdgpu_smu_memory_pool_size = 0;
MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");
module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
@@ -316,6 +317,11 @@
module_param_named(cik_support, amdgpu_cik_support, int, 0444);
#endif
+MODULE_PARM_DESC(smu_memory_pool_size,
+ "reserve gtt for smu debug usage, 0 = disable,"
+ "0x1 = 256Mbyte, 0x2 = 512Mbyte, 0x4 = 1 Gbyte, 0x8 = 2GByte");
+module_param_named(smu_memory_pool_size, amdgpu_smu_memory_pool_size, uint, 0444);
+
static const struct pci_device_id pciidlist[] = {
#ifdef CONFIG_DRM_AMDGPU_SI
{0x1002, 0x6780, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TAHITI},
diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
index 66c49b8..0cdfa41 100644
--- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
@@ -145,6 +145,39 @@ static int pp_hw_fini(void *handle)
return 0;
}
+static void pp_reserve_vram_for_smu(struct amdgpu_device *adev)
+{
+ int r = -EINVAL;
+ void *cpu_ptr = NULL;
+ uint64_t gpu_addr;
+ struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;
+
+ if (amdgpu_bo_create_kernel(adev, adev->pm.smu_prv_buffer_size,
+ PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT,
+ &adev->pm.smu_prv_buffer,
+ &gpu_addr,
+ &cpu_ptr)) {
+ DRM_ERROR("amdgpu: failed to create smu prv buffer \n");
+ return;
+ }
+
+ if (hwmgr->hwmgr_func->notify_cac_buffer_info)
+ r = hwmgr->hwmgr_func->notify_cac_buffer_info(hwmgr,
+ lower_32_bits((unsigned long)cpu_ptr),
+ upper_32_bits((unsigned long)cpu_ptr),
+ lower_32_bits(gpu_addr),
+ upper_32_bits(gpu_addr),
+ adev->pm.smu_prv_buffer_size);
+
+ if (r) {
+ amdgpu_bo_free_kernel(&adev->pm.smu_prv_buffer, NULL, NULL);
+ adev->pm.smu_prv_buffer = NULL;
+ DRM_ERROR("amdgpu: failed to notify SMU buffer address.\n");
+ }
+
+ return;
+}
+
static int pp_late_init(void *handle)
{
struct amdgpu_device *adev = handle;
@@ -156,6 +189,7 @@ static int pp_late_init(void *handle)
AMD_PP_TASK_COMPLETE_INIT, NULL);
mutex_unlock(&hwmgr->smu_lock);
}
+ pp_reserve_vram_for_smu(adev);
return 0;
}
@@ -163,6 +197,8 @@ static void pp_late_fini(void *handle)
{
struct amdgpu_device *adev = handle;
+ if (adev->pm.smu_prv_buffer)
+ amdgpu_bo_free_kernel(&adev->pm.smu_prv_buffer, NULL, NULL);
amd_powerplay_destroy(adev);
}
--
1.9.1
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