/*
* Copyright 2014 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include <linux/module.h>
#include <linux/fdtable.h>
#include <linux/uaccess.h>
#include <linux/mmu_context.h>
#include "amdgpu.h"
#include "amdgpu_amdkfd.h"
#include "gfx_v8_0.h"
#include "gca/gfx_8_0_sh_mask.h"
#include "gca/gfx_8_0_d.h"
#include "gca/gfx_8_0_enum.h"
#include "oss/oss_3_0_sh_mask.h"
#include "oss/oss_3_0_d.h"
#include "gmc/gmc_8_1_sh_mask.h"
#include "gmc/gmc_8_1_d.h"
#include "vi_structs.h"
#include "vid.h"
enum hqd_dequeue_request_type {
NO_ACTION = 0,
DRAIN_PIPE,
RESET_WAVES
};
/*
* Register access functions
*/
static void kgd_program_sh_mem_settings(struct kgd_dev *kgd, uint32_t vmid,
uint32_t sh_mem_config,
uint32_t sh_mem_ape1_base, uint32_t sh_mem_ape1_limit,
uint32_t sh_mem_bases);
static int kgd_set_pasid_vmid_mapping(struct kgd_dev *kgd, unsigned int pasid,
unsigned int vmid);
static int kgd_init_interrupts(struct kgd_dev *kgd, uint32_t pipe_id);
static int kgd_hqd_load(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
uint32_t queue_id, uint32_t __user *wptr,
uint32_t wptr_shift, uint32_t wptr_mask,
struct mm_struct *mm);
static int kgd_hqd_dump(struct kgd_dev *kgd,
uint32_t pipe_id, uint32_t queue_id,
uint32_t (**dump)[2], uint32_t *n_regs);
static int kgd_hqd_sdma_load(struct kgd_dev *kgd, void *mqd,
uint32_t __user *wptr, struct mm_struct *mm);
static int kgd_hqd_sdma_dump(struct kgd_dev *kgd,
uint32_t engine_id, uint32_t queue_id,
uint32_t (**dump)[2], uint32_t *n_regs);
static bool kgd_hqd_is_occupied(struct kgd_dev *kgd, uint64_t queue_address,
uint32_t pipe_id, uint32_t queue_id);
static bool kgd_hqd_sdma_is_occupied(struct kgd_dev *kgd, void *mqd);
static int kgd_hqd_destroy(struct kgd_dev *kgd, void *mqd,
enum kfd_preempt_type reset_type,
unsigned int utimeout, uint32_t pipe_id,
uint32_t queue_id);
static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd,
unsigned int utimeout);
static int kgd_address_watch_disable(struct kgd_dev *kgd);
static int kgd_address_watch_execute(struct kgd_dev *kgd,
unsigned int watch_point_id,
uint32_t cntl_val,
uint32_t addr_hi,
uint32_t addr_lo);
static int kgd_wave_control_execute(struct kgd_dev *kgd,
uint32_t gfx_index_val,
uint32_t sq_cmd);
static uint32_t kgd_address_watch_get_offset(struct kgd_dev *kgd,
unsigned int watch_point_id,
unsigned int reg_offset);
static bool get_atc_vmid_pasid_mapping_valid(struct kgd_dev *kgd,
uint8_t vmid);
static uint16_t get_atc_vmid_pasid_mapping_pasid(struct kgd_dev *kgd,
uint8_t vmid);
static void set_scratch_backing_va(struct kgd_dev *kgd,
uint64_t va, uint32_t vmid);
static void set_vm_context_page_table_base(struct kgd_dev *kgd, uint32_t vmid,
uint64_t page_table_base);
static int invalidate_tlbs(struct kgd_dev *kgd, uint16_t pasid);
static int invalidate_tlbs_vmid(struct kgd_dev *kgd, uint16_t vmid);
/* Because of REG_GET_FIELD() being used, we put this function in the
* asic specific file.
*/
static int get_tile_config(struct kgd_dev *kgd,
struct tile_config *config)
{
struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
config->gb_addr_config = adev->gfx.config.gb_addr_config;
config->num_banks = REG_GET_FIELD(adev->gfx.config.mc_arb_ramcfg,
MC_ARB_RAMCFG, NOOFBANK);
config->num_ranks = REG_GET_FIELD(adev->gfx.config.mc_arb_ramcfg,
MC_ARB_RAMCFG, NOOFRANKS);
config->tile_config_ptr = adev->gfx.config.tile_mode_array;
config->num_tile_configs =
ARRAY_SIZE(adev->gfx.config.tile_mode_array);
config->macro_tile_config_ptr =
adev->gfx.config.macrotile_mode_array;
config->num_macro_tile_configs =
ARRAY_SIZE(adev->gfx.config.macrotile_mode_array);
return 0;
}
static const struct kfd2kgd_calls kfd2kgd = {
.program_sh_mem_settings = kgd_program_sh_mem_settings,
.set_pasid_vmid_mapping = kgd_set_pasid_vmid_mapping,
.init_interrupts = kgd_init_interrupts,
.hqd_load = kgd_hqd_load,
.hqd_sdma_load = kgd_hqd_sdma_load,
.hqd_dump = kgd_hqd_dump,
.hqd_sdma_dump = kgd_hqd_sdma_dump,
.hqd_is_occupied = kgd_hqd_is_occupied,
.hqd_sdma_is_occupied = kgd_hqd_sdma_is_occupied,
.hqd_destroy = kgd_hqd_destroy,
.hqd_sdma_destroy = kgd_hqd_sdma_destroy,
.address_watch_disable = kgd_address_watch_disable,
.address_watch_execute = kgd_address_watch_execute,
.wave_control_execute = kgd_wave_control_execute,
.address_watch_get_offset = kgd_address_watch_get_offset,
.get_atc_vmid_pasid_mapping_pasid =
get_atc_vmid_pasid_mapping_pasid,
.get_atc_vmid_pasid_mapping_valid =
get_atc_vmid_pasid_mapping_valid,
.set_scratch_backing_va = set_scratch_backing_va,
.get_tile_config = get_tile_config,
.set_vm_context_page_table_base = set_vm_context_page_table_base,
.invalidate_tlbs = invalidate_tlbs,
.invalidate_tlbs_vmid = invalidate_tlbs_vmid,
};
struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void)
{
return (struct kfd2kgd_calls *)&kfd2kgd;
}
static inline struct amdgpu_device *get_amdgpu_device(struct kgd_dev *kgd)
{
return (struct amdgpu_device *)kgd;
}
static void lock_srbm(struct kgd_dev *kgd, uint32_t mec, uint32_t pipe,
uint32_t queue, uint32_t vmid)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
uint32_t value = PIPEID(pipe) | MEID(mec) | VMID(vmid) | QUEUEID(queue);
mutex_lock(&adev->srbm_mutex);
WREG32(mmSRBM_GFX_CNTL, value);
}
static void unlock_srbm(struct kgd_dev *kgd)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
WREG32(mmSRBM_GFX_CNTL, 0);
mutex_unlock(&adev->srbm_mutex);
}
static void acquire_queue(struct kgd_dev *kgd, uint32_t pipe_id,
uint32_t queue_id)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
uint32_t mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
uint32_t pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
lock_srbm(kgd, mec, pipe, queue_id, 0);
}
static void release_queue(struct kgd_dev *kgd)
{
unlock_srbm(kgd);
}
static void kgd_program_sh_mem_settings(struct kgd_dev *kgd, uint32_t vmid,
uint32_t sh_mem_config,
uint32_t sh_mem_ape1_base,
uint32_t sh_mem_ape1_limit,
uint32_t sh_mem_bases)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
lock_srbm(kgd, 0, 0, 0, vmid);
WREG32(mmSH_MEM_CONFIG, sh_mem_config);
WREG32(mmSH_MEM_APE1_BASE, sh_mem_ape1_base);
WREG32(mmSH_MEM_APE1_LIMIT, sh_mem_ape1_limit);
WREG32(mmSH_MEM_BASES, sh_mem_bases);
unlock_srbm(kgd);
}
static int kgd_set_pasid_vmid_mapping(struct kgd_dev *kgd, unsigned int pasid,
unsigned int vmid)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
/*
* We have to assume that there is no outstanding mapping.
* The ATC_VMID_PASID_MAPPING_UPDATE_STATUS bit could be 0 because
* a mapping is in progress or because a mapping finished
* and the SW cleared it.
* So the protocol is to always wait & clear.
*/
uint32_t pasid_mapping = (pasid == 0) ? 0 : (uint32_t)pasid |
ATC_VMID0_PASID_MAPPING__VALID_MASK;
WREG32(mmATC_VMID0_PASID_MAPPING + vmid, pasid_mapping);
while (!(RREG32(mmATC_VMID_PASID_MAPPING_UPDATE_STATUS) & (1U << vmid)))
cpu_relax();
WREG32(mmATC_VMID_PASID_MAPPING_UPDATE_STATUS, 1U << vmid);
/* Mapping vmid to pasid also for IH block */
WREG32(mmIH_VMID_0_LUT + vmid, pasid_mapping);
return 0;
}
static int kgd_init_interrupts(struct kgd_dev *kgd, uint32_t pipe_id)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
uint32_t mec;
uint32_t pipe;
mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
lock_srbm(kgd, mec, pipe, 0, 0);
WREG32(mmCPC_INT_CNTL, CP_INT_CNTL_RING0__TIME_STAMP_INT_ENABLE_MASK |
CP_INT_CNTL_RING0__OPCODE_ERROR_INT_ENABLE_MASK);
unlock_srbm(kgd);
return 0;
}
static inline uint32_t get_sdma_base_addr(struct vi_sdma_mqd *m)
{
uint32_t retval;
retval = m->sdma_engine_id * SDMA1_REGISTER_OFFSET +
m->sdma_queue_id * KFD_VI_SDMA_QUEUE_OFFSET;
pr_debug("sdma base address: 0x%x\n", retval);
return retval;
}
static inline struct vi_mqd *get_mqd(void *mqd)
{
return (struct vi_mqd *)mqd;
}
static inline struct vi_sdma_mqd *get_sdma_mqd(void *mqd)
{
return (struct vi_sdma_mqd *)mqd;
}
static int kgd_hqd_load(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
uint32_t queue_id, uint32_t __user *wptr,
uint32_t wptr_shift, uint32_t wptr_mask,
struct mm_struct *mm)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
struct vi_mqd *m;
uint32_t *mqd_hqd;
uint32_t reg, wptr_val, data;
bool valid_wptr = false;
m = get_mqd(mqd);
acquire_queue(kgd, pipe_id, queue_id);
/* HIQ is set during driver init period with vmid set to 0*/
if (m->cp_hqd_vmid == 0) {
uint32_t value, mec, pipe;
mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
pr_debug("kfd: set HIQ, mec:%d, pipe:%d, queue:%d.\n",
mec, pipe, queue_id);
value = RREG32(mmRLC_CP_SCHEDULERS);
value = REG_SET_FIELD(value, RLC_CP_SCHEDULERS, scheduler1,
((mec << 5) | (pipe << 3) | queue_id | 0x80));
WREG32(mmRLC_CP_SCHEDULERS, value);
}
/* HQD registers extend from CP_MQD_BASE_ADDR to CP_HQD_EOP_WPTR_MEM. */
mqd_hqd = &m->cp_mqd_base_addr_lo;
for (reg = mmCP_MQD_BASE_ADDR; reg <= mmCP_HQD_EOP_CONTROL; reg++)
WREG32(reg, mqd_hqd[reg - mmCP_MQD_BASE_ADDR]);
/* Tonga errata: EOP RPTR/WPTR should be left unmodified.
* This is safe since EOP RPTR==WPTR for any inactive HQD
* on ASICs that do not support context-save.
* EOP writes/reads can start anywhere in the ring.
*/
if (get_amdgpu_device(kgd)->asic_type != CHIP_TONGA) {
WREG32(mmCP_HQD_EOP_RPTR, m->cp_hqd_eop_rptr);
WREG32(mmCP_HQD_EOP_WPTR, m->cp_hqd_eop_wptr);
WREG32(mmCP_HQD_EOP_WPTR_MEM, m->cp_hqd_eop_wptr_mem);
}
for (reg = mmCP_HQD_EOP_EVENTS; reg <= mmCP_HQD_ERROR; reg++)
WREG32(reg, mqd_hqd[reg - mmCP_MQD_BASE_ADDR]);
/* Copy userspace write pointer value to register.
* Activate doorbell logic to monitor subsequent changes.
*/
data = REG_SET_FIELD(m->cp_hqd_pq_doorbell_control,
CP_HQD_PQ_DOORBELL_CONTROL, DOORBELL_EN, 1);
WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL, data);
/* read_user_ptr may take the mm->mmap_sem.
* release srbm_mutex to avoid circular dependency between
* srbm_mutex->mm_sem->reservation_ww_class_mutex->srbm_mutex.
*/
release_queue(kgd);
valid_wptr = read_user_wptr(mm, wptr, wptr_val);
acquire_queue(kgd, pipe_id, queue_id);
if (valid_wptr)
WREG32(mmCP_HQD_PQ_WPTR, (wptr_val << wptr_shift) & wptr_mask);
data = REG_SET_FIELD(m->cp_hqd_active, CP_HQD_ACTIVE, ACTIVE, 1);
WREG32(mmCP_HQD_ACTIVE, data);
release_queue(kgd);
return 0;
}
static int kgd_hqd_dump(struct kgd_dev *kgd,
uint32_t pipe_id, uint32_t queue_id,
uint32_t (**dump)[2], uint32_t *n_regs)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
uint32_t i = 0, reg;
#define HQD_N_REGS (54+4)
#define DUMP_REG(addr) do { \
if (WARN_ON_ONCE(i >= HQD_N_REGS)) \
break; \
(*dump)[i][0] = (addr) << 2; \
(*dump)[i++][1] = RREG32(addr); \
} while (0)
*dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
acquire_queue(kgd, pipe_id, queue_id);
DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE0);
DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE1);
DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE2);
DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE3);
for (reg = mmCP_MQD_BASE_ADDR; reg <= mmCP_HQD_EOP_DONES; reg++)
DUMP_REG(reg);
release_queue(kgd);
WARN_ON_ONCE(i != HQD_N_REGS);
*n_regs = i;
return 0;
}
static int kgd_hqd_sdma_load(struct kgd_dev *kgd, void *mqd,
uint32_t __user *wptr, struct mm_struct *mm)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
struct vi_sdma_mqd *m;
unsigned long end_jiffies;
uint32_t sdma_base_addr;
uint32_t data;
m = get_sdma_mqd(mqd);
sdma_base_addr = get_sdma_base_addr(m);
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL,
m->sdmax_rlcx_rb_cntl & (~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK));
end_jiffies = msecs_to_jiffies(2000) + jiffies;
while (true) {
data = RREG32(sdma_base_addr + mmSDMA0_RLC0_CONTEXT_STATUS);
if (data & SDMA0_RLC0_CONTEXT_STATUS__IDLE_MASK)
break;
if (time_after(jiffies, end_jiffies))
return -ETIME;
usleep_range(500, 1000);
}
if (m->sdma_engine_id) {
data = RREG32(mmSDMA1_GFX_CONTEXT_CNTL);
data = REG_SET_FIELD(data, SDMA1_GFX_CONTEXT_CNTL,
RESUME_CTX, 0);
WREG32(mmSDMA1_GFX_CONTEXT_CNTL, data);
} else {
data = RREG32(mmSDMA0_GFX_CONTEXT_CNTL);
data = REG_SET_FIELD(data, SDMA0_GFX_CONTEXT_CNTL,
RESUME_CTX, 0);
WREG32(mmSDMA0_GFX_CONTEXT_CNTL, data);
}
data = REG_SET_FIELD(m->sdmax_rlcx_doorbell, SDMA0_RLC0_DOORBELL,
ENABLE, 1);
WREG32(sdma_base_addr + mmSDMA0_RLC0_DOORBELL, data);
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR, m->sdmax_rlcx_rb_rptr);
if (read_user_wptr(mm, wptr, data))
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_WPTR, data);
else
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_WPTR,
m->sdmax_rlcx_rb_rptr);
WREG32(sdma_base_addr + mmSDMA0_RLC0_VIRTUAL_ADDR,
m->sdmax_rlcx_virtual_addr);
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_BASE, m->sdmax_rlcx_rb_base);
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_BASE_HI,
m->sdmax_rlcx_rb_base_hi);
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR_ADDR_LO,
m->sdmax_rlcx_rb_rptr_addr_lo);
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR_ADDR_HI,
m->sdmax_rlcx_rb_rptr_addr_hi);
data = REG_SET_FIELD(m->sdmax_rlcx_rb_cntl, SDMA0_RLC0_RB_CNTL,
RB_ENABLE, 1);
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL, data);
return 0;
}
static int kgd_hqd_sdma_dump(struct kgd_dev *kgd,
uint32_t engine_id, uint32_t queue_id,
uint32_t (**dump)[2], uint32_t *n_regs)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
uint32_t sdma_offset = engine_id * SDMA1_REGISTER_OFFSET +
queue_id * KFD_VI_SDMA_QUEUE_OFFSET;
uint32_t i = 0, reg;
#undef HQD_N_REGS
#define HQD_N_REGS (19+4+2+3+7)
*dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
for (reg = mmSDMA0_RLC0_RB_CNTL; reg <= mmSDMA0_RLC0_DOORBELL; reg++)
DUMP_REG(sdma_offset + reg);
for (reg = mmSDMA0_RLC0_VIRTUAL_ADDR; reg <= mmSDMA0_RLC0_WATERMARK;
reg++)
DUMP_REG(sdma_offset + reg);
for (reg = mmSDMA0_RLC0_CSA_ADDR_LO; reg <= mmSDMA0_RLC0_CSA_ADDR_HI;
reg++)
DUMP_REG(sdma_offset + reg);
for (reg = mmSDMA0_RLC0_IB_SUB_REMAIN; reg <= mmSDMA0_RLC0_DUMMY_REG;
reg++)
DUMP_REG(sdma_offset + reg);
for (reg = mmSDMA0_RLC0_MIDCMD_DATA0; reg <= mmSDMA0_RLC0_MIDCMD_CNTL;
reg++)
DUMP_REG(sdma_offset + reg);
WARN_ON_ONCE(i != HQD_N_REGS);
*n_regs = i;
return 0;
}
static bool kgd_hqd_is_occupied(struct kgd_dev *kgd, uint64_t queue_address,
uint32_t pipe_id, uint32_t queue_id)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
uint32_t act;
bool retval = false;
uint32_t low, high;
acquire_queue(kgd, pipe_id, queue_id);
act = RREG32(mmCP_HQD_ACTIVE);
if (act) {
low = lower_32_bits(queue_address >> 8);
high = upper_32_bits(queue_address >> 8);
if (low == RREG32(mmCP_HQD_PQ_BASE) &&
high == RREG32(mmCP_HQD_PQ_BASE_HI))
retval = true;
}
release_queue(kgd);
return retval;
}
static bool kgd_hqd_sdma_is_occupied(struct kgd_dev *kgd, void *mqd)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
struct vi_sdma_mqd *m;
uint32_t sdma_base_addr;
uint32_t sdma_rlc_rb_cntl;
m = get_sdma_mqd(mqd);
sdma_base_addr = get_sdma_base_addr(m);
sdma_rlc_rb_cntl = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL);
if (sdma_rlc_rb_cntl & SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK)
return true;
return false;
}
static int kgd_hqd_destroy(struct kgd_dev *kgd, void *mqd,
enum kfd_preempt_type reset_type,
unsigned int utimeout, uint32_t pipe_id,
uint32_t queue_id)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
uint32_t temp;
enum hqd_dequeue_request_type type;
unsigned long flags, end_jiffies;
int retry;
struct vi_mqd *m = get_mqd(mqd);
if (adev->in_gpu_reset)
return -EIO;
acquire_queue(kgd, pipe_id, queue_id);
if (m->cp_hqd_vmid == 0)
WREG32_FIELD(RLC_CP_SCHEDULERS, scheduler1, 0);
switch (reset_type) {
case KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN:
type = DRAIN_PIPE;
break;
case KFD_PREEMPT_TYPE_WAVEFRONT_RESET:
type = RESET_WAVES;
break;
default:
type = DRAIN_PIPE;
break;
}
/* Workaround: If IQ timer is active and the wait time is close to or
* equal to 0, dequeueing is not safe. Wait until either the wait time
* is larger or timer is cleared. Also, ensure that IQ_REQ_PEND is
* cleared before continuing. Also, ensure wait times are set to at
* least 0x3.
*/
local_irq_save(flags);
preempt_disable();
retry = 5000; /* wait for 500 usecs at maximum */
while (true) {
temp = RREG32(mmCP_HQD_IQ_TIMER);
if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, PROCESSING_IQ)) {
pr_debug("HW is processing IQ\n");
goto loop;
}
if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, ACTIVE)) {
if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, RETRY_TYPE)
== 3) /* SEM-rearm is safe */
break;
/* Wait time 3 is safe for CP, but our MMIO read/write
* time is close to 1 microsecond, so check for 10 to
* leave more buffer room
*/
if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, WAIT_TIME)
>= 10)
break;
pr_debug("IQ timer is active\n");
} else
break;
loop:
if (!retry) {
pr_err("CP HQD IQ timer status time out\n");
break;
}
ndelay(100);
--retry;
}
retry = 1000;
while (true) {
temp = RREG32(mmCP_HQD_DEQUEUE_REQUEST);
if (!(temp & CP_HQD_DEQUEUE_REQUEST__IQ_REQ_PEND_MASK))
break;
pr_debug("Dequeue request is pending\n");
if (!retry) {
pr_err("CP HQD dequeue request time out\n");
break;
}
ndelay(100);
--retry;
}
local_irq_restore(flags);
preempt_enable();
WREG32(mmCP_HQD_DEQUEUE_REQUEST, type);
end_jiffies = (utimeout * HZ / 1000) + jiffies;
while (true) {
temp = RREG32(mmCP_HQD_ACTIVE);
if (!(temp & CP_HQD_ACTIVE__ACTIVE_MASK))
break;
if (time_after(jiffies, end_jiffies)) {
pr_err("cp queue preemption time out.\n");
release_queue(kgd);
return -ETIME;
}
usleep_range(500, 1000);
}
release_queue(kgd);
return 0;
}
static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd,
unsigned int utimeout)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
struct vi_sdma_mqd *m;
uint32_t sdma_base_addr;
uint32_t temp;
unsigned long end_jiffies = (utimeout * HZ / 1000) + jiffies;
m = get_sdma_mqd(mqd);
sdma_base_addr = get_sdma_base_addr(m);
temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL);
temp = temp & ~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK;
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL, temp);
while (true) {
temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_CONTEXT_STATUS);
if (temp & SDMA0_RLC0_CONTEXT_STATUS__IDLE_MASK)
break;
if (time_after(jiffies, end_jiffies))
return -ETIME;
usleep_range(500, 1000);
}
WREG32(sdma_base_addr + mmSDMA0_RLC0_DOORBELL, 0);
WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL,
RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL) |
SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK);
m->sdmax_rlcx_rb_rptr = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR);
return 0;
}
static bool get_atc_vmid_pasid_mapping_valid(struct kgd_dev *kgd,
uint8_t vmid)
{
uint32_t reg;
struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
reg = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
return reg & ATC_VMID0_PASID_MAPPING__VALID_MASK;
}
static uint16_t get_atc_vmid_pasid_mapping_pasid(struct kgd_dev *kgd,
uint8_t vmid)
{
uint32_t reg;
struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
reg = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
return reg & ATC_VMID0_PASID_MAPPING__PASID_MASK;
}
static int kgd_address_watch_disable(struct kgd_dev *kgd)
{
return 0;
}
static int kgd_address_watch_execute(struct kgd_dev *kgd,
unsigned int watch_point_id,
uint32_t cntl_val,
uint32_t addr_hi,
uint32_t addr_lo)
{
return 0;
}
static int kgd_wave_control_execute(struct kgd_dev *kgd,
uint32_t gfx_index_val,
uint32_t sq_cmd)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
uint32_t data = 0;
mutex_lock(&adev->grbm_idx_mutex);
WREG32(mmGRBM_GFX_INDEX, gfx_index_val);
WREG32(mmSQ_CMD, sq_cmd);
data = REG_SET_FIELD(data, GRBM_GFX_INDEX,
INSTANCE_BROADCAST_WRITES, 1);
data = REG_SET_FIELD(data, GRBM_GFX_INDEX,
SH_BROADCAST_WRITES, 1);
data = REG_SET_FIELD(data, GRBM_GFX_INDEX,
SE_BROADCAST_WRITES, 1);
WREG32(mmGRBM_GFX_INDEX, data);
mutex_unlock(&adev->grbm_idx_mutex);
return 0;
}
static uint32_t kgd_address_watch_get_offset(struct kgd_dev *kgd,
unsigned int watch_point_id,
unsigned int reg_offset)
{
return 0;
}
static void set_scratch_backing_va(struct kgd_dev *kgd,
uint64_t va, uint32_t vmid)
{
struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
lock_srbm(kgd, 0, 0, 0, vmid);
WREG32(mmSH_HIDDEN_PRIVATE_BASE_VMID, va);
unlock_srbm(kgd);
}
static void set_vm_context_page_table_base(struct kgd_dev *kgd, uint32_t vmid,
uint64_t page_table_base)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid)) {
pr_err("trying to set page table base for wrong VMID\n");
return;
}
WREG32(mmVM_CONTEXT8_PAGE_TABLE_BASE_ADDR + vmid - 8,
lower_32_bits(page_table_base));
}
static int invalidate_tlbs(struct kgd_dev *kgd, uint16_t pasid)
{
struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
int vmid;
unsigned int tmp;
if (adev->in_gpu_reset)
return -EIO;
for (vmid = 0; vmid < 16; vmid++) {
if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid))
continue;
tmp = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
if ((tmp & ATC_VMID0_PASID_MAPPING__VALID_MASK) &&
(tmp & ATC_VMID0_PASID_MAPPING__PASID_MASK) == pasid) {
WREG32(mmVM_INVALIDATE_REQUEST, 1 << vmid);
RREG32(mmVM_INVALIDATE_RESPONSE);
break;
}
}
return 0;
}
static int invalidate_tlbs_vmid(struct kgd_dev *kgd, uint16_t vmid)
{
struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid)) {
pr_err("non kfd vmid %d\n", vmid);
return -EINVAL;
}
WREG32(mmVM_INVALIDATE_REQUEST, 1 << vmid);
RREG32(mmVM_INVALIDATE_RESPONSE);
return 0;
}
