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drm/amd/amdgpu: add memory training support for PSP_V13

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Add PSP_V13 memory training support funcs.

v2: replace DRM_{DEBUG/ERROR} with dev_{dbg/err}. (Hawking)
v3: fix checkpatch error (Alex)

Signed-off-by: Chengming Gui <Jack.Gui@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chengming Gui 2022-07-28 09:15:43 +08:00 committed by Alex Deucher
parent e22ec18750
commit 6fdd2077ec
1 changed files with 159 additions and 0 deletions
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159
drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
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@ -20,6 +20,8 @@
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include <linux/dev_printk.h>
#include <drm/drm_drv.h>
#include "amdgpu.h"
#include "amdgpu_psp.h"
#include "amdgpu_ucode.h"
@ -58,6 +60,9 @@ MODULE_FIRMWARE("amdgpu/psp_13_0_7_ta.bin");
#define C2PMSG_CMD_SPI_UPDATE_ROM_IMAGE_ADDR_HI 0x3
#define C2PMSG_CMD_SPI_UPDATE_FLASH_IMAGE 0x4
/* memory training timeout define */
#define MEM_TRAIN_SEND_MSG_TIMEOUT_US 3000000
static int psp_v13_0_init_microcode(struct psp_context *psp)
{
struct amdgpu_device *adev = psp->adev;
@ -419,6 +424,159 @@ static void psp_v13_0_ring_set_wptr(struct psp_context *psp, uint32_t value)
WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_67, value);
}
static int psp_v13_0_memory_training_send_msg(struct psp_context *psp, int msg)
{
int ret;
int i;
uint32_t data_32;
int max_wait;
struct amdgpu_device *adev = psp->adev;
data_32 = (psp->mem_train_ctx.c2p_train_data_offset >> 20);
WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_36, data_32);
WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_35, msg);
max_wait = MEM_TRAIN_SEND_MSG_TIMEOUT_US / adev->usec_timeout;
for (i = 0; i < max_wait; i++) {
ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, regMP0_SMN_C2PMSG_35),
0x80000000, 0x80000000, false);
if (ret == 0)
break;
}
if (i < max_wait)
ret = 0;
else
ret = -ETIME;
dev_dbg(adev->dev, "training %s %s, cost %d @ %d ms\n",
(msg == PSP_BL__DRAM_SHORT_TRAIN) ? "short" : "long",
(ret == 0) ? "succeed" : "failed",
i, adev->usec_timeout/1000);
return ret;
}
static int psp_v13_0_memory_training(struct psp_context *psp, uint32_t ops)
{
struct psp_memory_training_context *ctx = &psp->mem_train_ctx;
uint32_t *pcache = (uint32_t *)ctx->sys_cache;
struct amdgpu_device *adev = psp->adev;
uint32_t p2c_header[4];
uint32_t sz;
void *buf;
int ret, idx;
if (ctx->init == PSP_MEM_TRAIN_NOT_SUPPORT) {
dev_dbg(adev->dev, "Memory training is not supported.\n");
return 0;
} else if (ctx->init != PSP_MEM_TRAIN_INIT_SUCCESS) {
dev_err(adev->dev, "Memory training initialization failure.\n");
return -EINVAL;
}
if (psp_v13_0_is_sos_alive(psp)) {
dev_dbg(adev->dev, "SOS is alive, skip memory training.\n");
return 0;
}
amdgpu_device_vram_access(adev, ctx->p2c_train_data_offset, p2c_header, sizeof(p2c_header), false);
dev_dbg(adev->dev, "sys_cache[%08x,%08x,%08x,%08x] p2c_header[%08x,%08x,%08x,%08x]\n",
pcache[0], pcache[1], pcache[2], pcache[3],
p2c_header[0], p2c_header[1], p2c_header[2], p2c_header[3]);
if (ops & PSP_MEM_TRAIN_SEND_SHORT_MSG) {
dev_dbg(adev->dev, "Short training depends on restore.\n");
ops |= PSP_MEM_TRAIN_RESTORE;
}
if ((ops & PSP_MEM_TRAIN_RESTORE) &&
pcache[0] != MEM_TRAIN_SYSTEM_SIGNATURE) {
dev_dbg(adev->dev, "sys_cache[0] is invalid, restore depends on save.\n");
ops |= PSP_MEM_TRAIN_SAVE;
}
if (p2c_header[0] == MEM_TRAIN_SYSTEM_SIGNATURE &&
!(pcache[0] == MEM_TRAIN_SYSTEM_SIGNATURE &&
pcache[3] == p2c_header[3])) {
dev_dbg(adev->dev, "sys_cache is invalid or out-of-date, need save training data to sys_cache.\n");
ops |= PSP_MEM_TRAIN_SAVE;
}
if ((ops & PSP_MEM_TRAIN_SAVE) &&
p2c_header[0] != MEM_TRAIN_SYSTEM_SIGNATURE) {
dev_dbg(adev->dev, "p2c_header[0] is invalid, save depends on long training.\n");
ops |= PSP_MEM_TRAIN_SEND_LONG_MSG;
}
if (ops & PSP_MEM_TRAIN_SEND_LONG_MSG) {
ops &= ~PSP_MEM_TRAIN_SEND_SHORT_MSG;
ops |= PSP_MEM_TRAIN_SAVE;
}
dev_dbg(adev->dev, "Memory training ops:%x.\n", ops);
if (ops & PSP_MEM_TRAIN_SEND_LONG_MSG) {
/*
* Long training will encroach a certain amount on the bottom of VRAM;
* save the content from the bottom of VRAM to system memory
* before training, and restore it after training to avoid
* VRAM corruption.
*/
sz = GDDR6_MEM_TRAINING_ENCROACHED_SIZE;
if (adev->gmc.visible_vram_size < sz || !adev->mman.aper_base_kaddr) {
dev_err(adev->dev, "visible_vram_size %llx or aper_base_kaddr %p is not initialized.\n",
adev->gmc.visible_vram_size,
adev->mman.aper_base_kaddr);
return -EINVAL;
}
buf = vmalloc(sz);
if (!buf) {
dev_err(adev->dev, "failed to allocate system memory.\n");
return -ENOMEM;
}
if (drm_dev_enter(adev_to_drm(adev), &idx)) {
memcpy_fromio(buf, adev->mman.aper_base_kaddr, sz);
ret = psp_v13_0_memory_training_send_msg(psp, PSP_BL__DRAM_LONG_TRAIN);
if (ret) {
DRM_ERROR("Send long training msg failed.\n");
vfree(buf);
drm_dev_exit(idx);
return ret;
}
memcpy_toio(adev->mman.aper_base_kaddr, buf, sz);
adev->hdp.funcs->flush_hdp(adev, NULL);
vfree(buf);
drm_dev_exit(idx);
} else {
vfree(buf);
return -ENODEV;
}
}
if (ops & PSP_MEM_TRAIN_SAVE) {
amdgpu_device_vram_access(psp->adev, ctx->p2c_train_data_offset, ctx->sys_cache, ctx->train_data_size, false);
}
if (ops & PSP_MEM_TRAIN_RESTORE) {
amdgpu_device_vram_access(psp->adev, ctx->c2p_train_data_offset, ctx->sys_cache, ctx->train_data_size, true);
}
if (ops & PSP_MEM_TRAIN_SEND_SHORT_MSG) {
ret = psp_v13_0_memory_training_send_msg(psp, (amdgpu_force_long_training > 0) ?
PSP_BL__DRAM_LONG_TRAIN : PSP_BL__DRAM_SHORT_TRAIN);
if (ret) {
dev_err(adev->dev, "send training msg failed.\n");
return ret;
}
}
ctx->training_cnt++;
return 0;
}
static int psp_v13_0_load_usbc_pd_fw(struct psp_context *psp, uint64_t fw_pri_mc_addr)
{
struct amdgpu_device *adev = psp->adev;
@ -567,6 +725,7 @@ static const struct psp_funcs psp_v13_0_funcs = {
.ring_destroy = psp_v13_0_ring_destroy,
.ring_get_wptr = psp_v13_0_ring_get_wptr,
.ring_set_wptr = psp_v13_0_ring_set_wptr,
.mem_training = psp_v13_0_memory_training,
.load_usbc_pd_fw = psp_v13_0_load_usbc_pd_fw,
.read_usbc_pd_fw = psp_v13_0_read_usbc_pd_fw,
.update_spirom = psp_v13_0_update_spirom,