/*
* 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 "amdgpu.h"
#include "amdgpu_amdkfd.h"
#include "cikd.h"
#include "cik_sdma.h"
#include "gfx_v7_0.h"
#include "gca/gfx_7_2_d.h"
#include "gca/gfx_7_2_enum.h"
#include "gca/gfx_7_2_sh_mask.h"
#include "oss/oss_2_0_d.h"
#include "oss/oss_2_0_sh_mask.h"
#include "gmc/gmc_7_1_d.h"
#include "gmc/gmc_7_1_sh_mask.h"
#include "cik_structs.h"
enum hqd_dequeue_request_type {
NO_ACTION = 0,
DRAIN_PIPE,
RESET_WAVES
};
enum {
MAX_TRAPID = 8, /* 3 bits in the bitfield. */
MAX_WATCH_ADDRESSES = 4
};
static void lock_srbm(struct amdgpu_device *adev, uint32_t mec, uint32_t pipe,
uint32_t queue, uint32_t vmid)
{
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 amdgpu_device *adev)
{
WREG32(mmSRBM_GFX_CNTL, 0);
mutex_unlock(&adev->srbm_mutex);
}
static void acquire_queue(struct amdgpu_device *adev, uint32_t pipe_id,
uint32_t queue_id)
{
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(adev, mec, pipe, queue_id, 0);
}
static void release_queue(struct amdgpu_device *adev)
{
unlock_srbm(adev);
}
static void kgd_program_sh_mem_settings(struct amdgpu_device *adev, 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, uint32_t inst)
{
lock_srbm(adev, 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(adev);
}
static int kgd_set_pasid_vmid_mapping(struct amdgpu_device *adev, u32 pasid,
unsigned int vmid, uint32_t inst)
{
/*
* 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 amdgpu_device *adev, uint32_t pipe_id,
uint32_t inst)
{
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(adev, 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(adev);
return 0;
}
static inline uint32_t get_sdma_rlc_reg_offset(struct cik_sdma_rlc_registers *m)
{
uint32_t retval;
retval = m->sdma_engine_id * SDMA1_REGISTER_OFFSET +
m->sdma_queue_id * KFD_CIK_SDMA_QUEUE_OFFSET;
pr_debug("RLC register offset for SDMA%d RLC%d: 0x%x\n",
m->sdma_engine_id, m->sdma_queue_id, retval);
return retval;
}
static inline struct cik_mqd *get_mqd(void *mqd)
{
return (struct cik_mqd *)mqd;
}
static inline struct cik_sdma_rlc_registers *get_sdma_mqd(void *mqd)
{
return (struct cik_sdma_rlc_registers *)mqd;
}
static int kgd_hqd_load(struct amdgpu_device *adev, 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, uint32_t inst)
{
struct cik_mqd *m;
uint32_t *mqd_hqd;
uint32_t reg, wptr_val, data;
bool valid_wptr = false;
m = get_mqd(mqd);
acquire_queue(adev, pipe_id, queue_id);
/* HQD registers extend from CP_MQD_BASE_ADDR to CP_MQD_CONTROL. */
mqd_hqd = &m->cp_mqd_base_addr_lo;
for (reg = mmCP_MQD_BASE_ADDR; reg <= mmCP_MQD_CONTROL; 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_lock.
* release srbm_mutex to avoid circular dependency between
* srbm_mutex->mmap_lock->reservation_ww_class_mutex->srbm_mutex.
*/
release_queue(adev);
valid_wptr = read_user_wptr(mm, wptr, wptr_val);
acquire_queue(adev, 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(adev);
return 0;
}
static int kgd_hqd_dump(struct amdgpu_device *adev,
uint32_t pipe_id, uint32_t queue_id,
uint32_t (**dump)[2], uint32_t *n_regs, uint32_t inst)
{
uint32_t i = 0, reg;
#define HQD_N_REGS (35+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, sizeof(**dump), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
acquire_queue(adev, 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_MQD_CONTROL; reg++)
DUMP_REG(reg);
release_queue(adev);
WARN_ON_ONCE(i != HQD_N_REGS);
*n_regs = i;
return 0;
}
static int kgd_hqd_sdma_load(struct amdgpu_device *adev, void *mqd,
uint32_t __user *wptr, struct mm_struct *mm)
{
struct cik_sdma_rlc_registers *m;
unsigned long end_jiffies;
uint32_t sdma_rlc_reg_offset;
uint32_t data;
m = get_sdma_mqd(mqd);
sdma_rlc_reg_offset = get_sdma_rlc_reg_offset(m);
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL,
m->sdma_rlc_rb_cntl & (~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK));
end_jiffies = msecs_to_jiffies(2000) + jiffies;
while (true) {
data = RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_CONTEXT_STATUS);
if (data & SDMA0_RLC0_CONTEXT_STATUS__IDLE_MASK)
break;
if (time_after(jiffies, end_jiffies)) {
pr_err("SDMA RLC not idle in %s\n", __func__);
return -ETIME;
}
usleep_range(500, 1000);
}
data = REG_SET_FIELD(m->sdma_rlc_doorbell, SDMA0_RLC0_DOORBELL,
ENABLE, 1);
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_DOORBELL, data);
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_RPTR,
m->sdma_rlc_rb_rptr);
if (read_user_wptr(mm, wptr, data))
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_WPTR, data);
else
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_WPTR,
m->sdma_rlc_rb_rptr);
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_VIRTUAL_ADDR,
m->sdma_rlc_virtual_addr);
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_BASE, m->sdma_rlc_rb_base);
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_BASE_HI,
m->sdma_rlc_rb_base_hi);
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_RPTR_ADDR_LO,
m->sdma_rlc_rb_rptr_addr_lo);
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_RPTR_ADDR_HI,
m->sdma_rlc_rb_rptr_addr_hi);
data = REG_SET_FIELD(m->sdma_rlc_rb_cntl, SDMA0_RLC0_RB_CNTL,
RB_ENABLE, 1);
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL, data);
return 0;
}
static int kgd_hqd_sdma_dump(struct amdgpu_device *adev,
uint32_t engine_id, uint32_t queue_id,
uint32_t (**dump)[2], uint32_t *n_regs)
{
uint32_t sdma_offset = engine_id * SDMA1_REGISTER_OFFSET +
queue_id * KFD_CIK_SDMA_QUEUE_OFFSET;
uint32_t i = 0, reg;
#undef HQD_N_REGS
#define HQD_N_REGS (19+4)
*dump = kmalloc_array(HQD_N_REGS, sizeof(**dump), 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);
WARN_ON_ONCE(i != HQD_N_REGS);
*n_regs = i;
return 0;
}
static bool kgd_hqd_is_occupied(struct amdgpu_device *adev,
uint64_t queue_address, uint32_t pipe_id,
uint32_t queue_id, uint32_t inst)
{
uint32_t act;
bool retval = false;
uint32_t low, high;
acquire_queue(adev, 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(adev);
return retval;
}
static bool kgd_hqd_sdma_is_occupied(struct amdgpu_device *adev, void *mqd)
{
struct cik_sdma_rlc_registers *m;
uint32_t sdma_rlc_reg_offset;
uint32_t sdma_rlc_rb_cntl;
m = get_sdma_mqd(mqd);
sdma_rlc_reg_offset = get_sdma_rlc_reg_offset(m);
sdma_rlc_rb_cntl = RREG32(sdma_rlc_reg_offset + 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 amdgpu_device *adev, void *mqd,
enum kfd_preempt_type reset_type,
unsigned int utimeout, uint32_t pipe_id,
uint32_t queue_id, uint32_t inst)
{
uint32_t temp;
enum hqd_dequeue_request_type type;
unsigned long flags, end_jiffies;
int retry;
if (amdgpu_in_reset(adev))
return -EIO;
acquire_queue(adev, pipe_id, queue_id);
WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL, 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(adev);
return -ETIME;
}
usleep_range(500, 1000);
}
release_queue(adev);
return 0;
}
static int kgd_hqd_sdma_destroy(struct amdgpu_device *adev, void *mqd,
unsigned int utimeout)
{
struct cik_sdma_rlc_registers *m;
uint32_t sdma_rlc_reg_offset;
uint32_t temp;
unsigned long end_jiffies = (utimeout * HZ / 1000) + jiffies;
m = get_sdma_mqd(mqd);
sdma_rlc_reg_offset = get_sdma_rlc_reg_offset(m);
temp = RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL);
temp = temp & ~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK;
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL, temp);
while (true) {
temp = RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_CONTEXT_STATUS);
if (temp & SDMA0_RLC0_CONTEXT_STATUS__IDLE_MASK)
break;
if (time_after(jiffies, end_jiffies)) {
pr_err("SDMA RLC not idle in %s\n", __func__);
return -ETIME;
}
usleep_range(500, 1000);
}
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_DOORBELL, 0);
WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL,
RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL) |
SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK);
m->sdma_rlc_rb_rptr = RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_RPTR);
return 0;
}
static int kgd_wave_control_execute(struct amdgpu_device *adev,
uint32_t gfx_index_val,
uint32_t sq_cmd, uint32_t inst)
{
uint32_t data;
mutex_lock(&adev->grbm_idx_mutex);
WREG32(mmGRBM_GFX_INDEX, gfx_index_val);
WREG32(mmSQ_CMD, sq_cmd);
/* Restore the GRBM_GFX_INDEX register */
data = GRBM_GFX_INDEX__INSTANCE_BROADCAST_WRITES_MASK |
GRBM_GFX_INDEX__SH_BROADCAST_WRITES_MASK |
GRBM_GFX_INDEX__SE_BROADCAST_WRITES_MASK;
WREG32(mmGRBM_GFX_INDEX, data);
mutex_unlock(&adev->grbm_idx_mutex);
return 0;
}
static bool get_atc_vmid_pasid_mapping_info(struct amdgpu_device *adev,
uint8_t vmid, uint16_t *p_pasid)
{
uint32_t value;
value = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
*p_pasid = value & ATC_VMID0_PASID_MAPPING__PASID_MASK;
return !!(value & ATC_VMID0_PASID_MAPPING__VALID_MASK);
}
static void set_scratch_backing_va(struct amdgpu_device *adev,
uint64_t va, uint32_t vmid)
{
lock_srbm(adev, 0, 0, 0, vmid);
WREG32(mmSH_HIDDEN_PRIVATE_BASE_VMID, va);
unlock_srbm(adev);
}
static void set_vm_context_page_table_base(struct amdgpu_device *adev,
uint32_t vmid, uint64_t page_table_base)
{
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));
}
/**
* read_vmid_from_vmfault_reg - read vmid from register
*
* adev: amdgpu_device pointer
* @vmid: vmid pointer
* read vmid from register (CIK).
*/
static uint32_t read_vmid_from_vmfault_reg(struct amdgpu_device *adev)
{
uint32_t status = RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_STATUS);
return REG_GET_FIELD(status, VM_CONTEXT1_PROTECTION_FAULT_STATUS, VMID);
}
const struct kfd2kgd_calls gfx_v7_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,
.wave_control_execute = kgd_wave_control_execute,
.get_atc_vmid_pasid_mapping_info = get_atc_vmid_pasid_mapping_info,
.set_scratch_backing_va = set_scratch_backing_va,
.set_vm_context_page_table_base = set_vm_context_page_table_base,
.read_vmid_from_vmfault_reg = read_vmid_from_vmfault_reg,
};
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