Shader read, write and atomic memory operations can be alerted to the
debugger as an address watch exception.
Allow the debugger to pass in a watch point to a particular memory
address per device.
Note that there exists only 4 watch points per devices to date, so have
the KFD keep track of what watch points are allocated or not.
v2: fixup with new kfd_node struct reference for mes and watch point
checks
Signed-off-by: Jonathan Kim <jonathan.kim@xxxxxxx>
---
.../drm/amd/amdgpu/amdgpu_amdkfd_aldebaran.c | 51 +++++++
.../drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c | 2 +
.../drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c | 78 ++++++++++
.../drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.h | 8 ++
.../drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c | 5 +-
.../drm/amd/amdgpu/amdgpu_amdkfd_gfx_v11.c | 52 ++++++-
.../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c | 77 ++++++++++
.../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.h | 8 ++
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 24 ++++
drivers/gpu/drm/amd/amdkfd/kfd_debug.c | 136 ++++++++++++++++++
drivers/gpu/drm/amd/amdkfd/kfd_debug.h | 8 +-
drivers/gpu/drm/amd/amdkfd/kfd_device.c | 2 +
drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 6 +-
13 files changed, 452 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_aldebaran.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_aldebaran.c
index 774ecfc3451a..efd6a72aab4e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_aldebaran.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_aldebaran.c
@@ -118,6 +118,55 @@ static uint32_t kgd_aldebaran_set_wave_launch_mode(struct amdgpu_device *adev,
return data;
}
+#define TCP_WATCH_STRIDE (regTCP_WATCH1_ADDR_H - regTCP_WATCH0_ADDR_H)
+static uint32_t kgd_gfx_aldebaran_set_address_watch(
+ struct amdgpu_device *adev,
+ uint64_t watch_address,
+ uint32_t watch_address_mask,
+ uint32_t watch_id,
+ uint32_t watch_mode,
+ uint32_t debug_vmid)
+{
+ uint32_t watch_address_high;
+ uint32_t watch_address_low;
+ uint32_t watch_address_cntl;
+
+ watch_address_cntl = 0;
+ watch_address_low = lower_32_bits(watch_address);
+ watch_address_high = upper_32_bits(watch_address) & 0xffff;
+
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ MODE,
+ watch_mode);
+
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ MASK,
+ watch_address_mask >> 6);
+
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ VALID,
+ 1);
+
+ WREG32_RLC((SOC15_REG_OFFSET(GC, 0, regTCP_WATCH0_ADDR_H) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_high);
+
+ WREG32_RLC((SOC15_REG_OFFSET(GC, 0, regTCP_WATCH0_ADDR_L) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_low);
+
+ return watch_address_cntl;
+}
+
+uint32_t kgd_gfx_aldebaran_clear_address_watch(struct amdgpu_device *adev,
+ uint32_t watch_id)
+{
+ return 0;
+}
+
const struct kfd2kgd_calls aldebaran_kfd2kgd = {
.program_sh_mem_settings = kgd_gfx_v9_program_sh_mem_settings,
.set_pasid_vmid_mapping = kgd_gfx_v9_set_pasid_vmid_mapping,
@@ -141,6 +190,8 @@ const struct kfd2kgd_calls aldebaran_kfd2kgd = {
.validate_trap_override_request = kgd_aldebaran_validate_trap_override_request,
.set_wave_launch_trap_override = kgd_aldebaran_set_wave_launch_trap_override,
.set_wave_launch_mode = kgd_aldebaran_set_wave_launch_mode,
+ .set_address_watch = kgd_gfx_aldebaran_set_address_watch,
+ .clear_address_watch = kgd_gfx_aldebaran_clear_address_watch,
.get_iq_wait_times = kgd_gfx_v9_get_iq_wait_times,
.build_grace_period_packet_info = kgd_gfx_v9_build_grace_period_packet_info,
.program_trap_handler_settings = kgd_gfx_v9_program_trap_handler_settings,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
index fbdc1b7b1e42..6df215aba4c4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
@@ -413,6 +413,8 @@ const struct kfd2kgd_calls arcturus_kfd2kgd = {
.validate_trap_override_request = kgd_gfx_v9_validate_trap_override_request,
.set_wave_launch_trap_override = kgd_gfx_v9_set_wave_launch_trap_override,
.set_wave_launch_mode = kgd_gfx_v9_set_wave_launch_mode,
+ .set_address_watch = kgd_gfx_v9_set_address_watch,
+ .clear_address_watch = kgd_gfx_v9_clear_address_watch,
.get_iq_wait_times = kgd_gfx_v9_get_iq_wait_times,
.build_grace_period_packet_info = kgd_gfx_v9_build_grace_period_packet_info,
.get_cu_occupancy = kgd_gfx_v9_get_cu_occupancy,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c
index a7a6edda557f..8ad7a7779e14 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c
@@ -880,6 +880,82 @@ uint32_t kgd_gfx_v10_set_wave_launch_mode(struct amdgpu_device *adev,
return 0;
}
+#define TCP_WATCH_STRIDE (mmTCP_WATCH1_ADDR_H - mmTCP_WATCH0_ADDR_H)
+uint32_t kgd_gfx_v10_set_address_watch(struct amdgpu_device *adev,
+ uint64_t watch_address,
+ uint32_t watch_address_mask,
+ uint32_t watch_id,
+ uint32_t watch_mode,
+ uint32_t debug_vmid)
+{
+ uint32_t watch_address_high;
+ uint32_t watch_address_low;
+ uint32_t watch_address_cntl;
+
+ watch_address_cntl = 0;
+
+ watch_address_low = lower_32_bits(watch_address);
+ watch_address_high = upper_32_bits(watch_address) & 0xffff;
+
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ VMID,
+ debug_vmid);
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ MODE,
+ watch_mode);
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ MASK,
+ watch_address_mask >> 7);
+
+ /* Turning off this watch point until we set all the registers */
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ VALID,
+ 0);
+
+ WREG32((SOC15_REG_OFFSET(GC, 0, mmTCP_WATCH0_CNTL) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_cntl);
+
+ WREG32((SOC15_REG_OFFSET(GC, 0, mmTCP_WATCH0_ADDR_H) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_high);
+
+ WREG32((SOC15_REG_OFFSET(GC, 0, mmTCP_WATCH0_ADDR_L) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_low);
+
+ /* Enable the watch point */
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ VALID,
+ 1);
+
+ WREG32((SOC15_REG_OFFSET(GC, 0, mmTCP_WATCH0_CNTL) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_cntl);
+
+ return 0;
+}
+
+uint32_t kgd_gfx_v10_clear_address_watch(struct amdgpu_device *adev,
+ uint32_t watch_id)
+{
+ uint32_t watch_address_cntl;
+
+ watch_address_cntl = 0;
+
+ WREG32((SOC15_REG_OFFSET(GC, 0, mmTCP_WATCH0_CNTL) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_cntl);
+
+ return 0;
+}
+
+
/* kgd_gfx_v10_get_iq_wait_times: Returns the mmCP_IQ_WAIT_TIME1/2 values
* The values read are:
* ib_offload_wait_time -- Wait Count for Indirect Buffer Offloads.
@@ -969,6 +1045,8 @@ const struct kfd2kgd_calls gfx_v10_kfd2kgd = {
.validate_trap_override_request = kgd_gfx_v10_validate_trap_override_request,
.set_wave_launch_trap_override = kgd_gfx_v10_set_wave_launch_trap_override,
.set_wave_launch_mode = kgd_gfx_v10_set_wave_launch_mode,
+ .set_address_watch = kgd_gfx_v10_set_address_watch,
+ .clear_address_watch = kgd_gfx_v10_clear_address_watch,
.get_iq_wait_times = kgd_gfx_v10_get_iq_wait_times,
.build_grace_period_packet_info = kgd_gfx_v10_build_grace_period_packet_info,
.program_trap_handler_settings = program_trap_handler_settings,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.h
index 3a6aca2b0eaa..e6b70196071a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.h
@@ -39,6 +39,14 @@ uint32_t kgd_gfx_v10_set_wave_launch_trap_override(struct amdgpu_device *adev,
uint32_t kgd_gfx_v10_set_wave_launch_mode(struct amdgpu_device *adev,
uint8_t wave_launch_mode,
uint32_t vmid);
+uint32_t kgd_gfx_v10_set_address_watch(struct amdgpu_device *adev,
+ uint64_t watch_address,
+ uint32_t watch_address_mask,
+ uint32_t watch_id,
+ uint32_t watch_mode,
+ uint32_t debug_vmid);
+uint32_t kgd_gfx_v10_clear_address_watch(struct amdgpu_device *adev,
+ uint32_t watch_id);
void kgd_gfx_v10_get_iq_wait_times(struct amdgpu_device *adev, uint32_t *wait_times);
void kgd_gfx_v10_build_grace_period_packet_info(struct amdgpu_device *adev,
uint32_t wait_times,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c
index ed36b433a48b..8c8437a4383f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10_3.c
@@ -678,6 +678,7 @@ const struct kfd2kgd_calls gfx_v10_3_kfd2kgd = {
.disable_debug_trap = kgd_gfx_v10_disable_debug_trap,
.validate_trap_override_request = kgd_gfx_v10_validate_trap_override_request,
.set_wave_launch_trap_override = kgd_gfx_v10_set_wave_launch_trap_override,
- .set_wave_launch_mode = kgd_gfx_v10_set_wave_launch_mode
-
+ .set_wave_launch_mode = kgd_gfx_v10_set_wave_launch_mode,
+ .set_address_watch = kgd_gfx_v10_set_address_watch,
+ .clear_address_watch = kgd_gfx_v10_clear_address_watch
};
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v11.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v11.c
index 9711d5128d09..52efa690a3c2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v11.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v11.c
@@ -737,6 +737,54 @@ static uint32_t kgd_gfx_v11_set_wave_launch_mode(struct amdgpu_device *adev,
return data;
}
+#define TCP_WATCH_STRIDE (regTCP_WATCH1_ADDR_H - regTCP_WATCH0_ADDR_H)
+static uint32_t kgd_gfx_v11_set_address_watch(struct amdgpu_device *adev,
+ uint64_t watch_address,
+ uint32_t watch_address_mask,
+ uint32_t watch_id,
+ uint32_t watch_mode,
+ uint32_t debug_vmid)
+{
+ uint32_t watch_address_high;
+ uint32_t watch_address_low;
+ uint32_t watch_address_cntl;
+
+ watch_address_cntl = 0;
+ watch_address_low = lower_32_bits(watch_address);
+ watch_address_high = upper_32_bits(watch_address) & 0xffff;
+
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ MODE,
+ watch_mode);
+
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ MASK,
+ watch_address_mask >> 7);
+
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ VALID,
+ 1);
+
+ WREG32_RLC((SOC15_REG_OFFSET(GC, 0, regTCP_WATCH0_ADDR_H) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_high);
+
+ WREG32_RLC((SOC15_REG_OFFSET(GC, 0, regTCP_WATCH0_ADDR_L) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_low);
+
+ return watch_address_cntl;
+}
+
+uint32_t kgd_gfx_v11_clear_address_watch(struct amdgpu_device *adev,
+ uint32_t watch_id)
+{
+ return 0;
+}
+
const struct kfd2kgd_calls gfx_v11_kfd2kgd = {
.program_sh_mem_settings = program_sh_mem_settings_v11,
.set_pasid_vmid_mapping = set_pasid_vmid_mapping_v11,
@@ -757,5 +805,7 @@ const struct kfd2kgd_calls gfx_v11_kfd2kgd = {
.disable_debug_trap = kgd_gfx_v11_disable_debug_trap,
.validate_trap_override_request = kgd_gfx_v11_validate_trap_override_request,
.set_wave_launch_trap_override = kgd_gfx_v11_set_wave_launch_trap_override,
- .set_wave_launch_mode = kgd_gfx_v11_set_wave_launch_mode
+ .set_wave_launch_mode = kgd_gfx_v11_set_wave_launch_mode,
+ .set_address_watch = kgd_gfx_v11_set_address_watch,
+ .clear_address_watch = kgd_gfx_v11_clear_address_watch
};
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
index 060331652573..a56c895e1cd9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
@@ -816,6 +816,81 @@ uint32_t kgd_gfx_v9_set_wave_launch_mode(struct amdgpu_device *adev,
return 0;
}
+#define TCP_WATCH_STRIDE (mmTCP_WATCH1_ADDR_H - mmTCP_WATCH0_ADDR_H)
+uint32_t kgd_gfx_v9_set_address_watch(struct amdgpu_device *adev,
+ uint64_t watch_address,
+ uint32_t watch_address_mask,
+ uint32_t watch_id,
+ uint32_t watch_mode,
+ uint32_t debug_vmid)
+{
+ uint32_t watch_address_high;
+ uint32_t watch_address_low;
+ uint32_t watch_address_cntl;
+
+ watch_address_cntl = 0;
+
+ watch_address_low = lower_32_bits(watch_address);
+ watch_address_high = upper_32_bits(watch_address) & 0xffff;
+
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ VMID,
+ debug_vmid);
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ MODE,
+ watch_mode);
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ MASK,
+ watch_address_mask >> 6);
+
+ /* Turning off this watch point until we set all the registers */
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ VALID,
+ 0);
+
+ WREG32_RLC((SOC15_REG_OFFSET(GC, 0, mmTCP_WATCH0_CNTL) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_cntl);
+
+ WREG32_RLC((SOC15_REG_OFFSET(GC, 0, mmTCP_WATCH0_ADDR_H) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_high);
+
+ WREG32_RLC((SOC15_REG_OFFSET(GC, 0, mmTCP_WATCH0_ADDR_L) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_low);
+
+ /* Enable the watch point */
+ watch_address_cntl = REG_SET_FIELD(watch_address_cntl,
+ TCP_WATCH0_CNTL,
+ VALID,
+ 1);
+
+ WREG32_RLC((SOC15_REG_OFFSET(GC, 0, mmTCP_WATCH0_CNTL) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_cntl);
+
+ return 0;
+}
+
+uint32_t kgd_gfx_v9_clear_address_watch(struct amdgpu_device *adev,
+ uint32_t watch_id)
+{
+ uint32_t watch_address_cntl;
+
+ watch_address_cntl = 0;
+
+ WREG32_RLC((SOC15_REG_OFFSET(GC, 0, mmTCP_WATCH0_CNTL) +
+ (watch_id * TCP_WATCH_STRIDE)),
+ watch_address_cntl);
+
+ return 0;
+}
+
/* kgd_gfx_v9_get_iq_wait_times: Returns the mmCP_IQ_WAIT_TIME1/2 values
* The values read are:
* ib_offload_wait_time -- Wait Count for Indirect Buffer Offloads.
@@ -1088,6 +1163,8 @@ const struct kfd2kgd_calls gfx_v9_kfd2kgd = {
.validate_trap_override_request = kgd_gfx_v9_validate_trap_override_request,
.set_wave_launch_trap_override = kgd_gfx_v9_set_wave_launch_trap_override,
.set_wave_launch_mode = kgd_gfx_v9_set_wave_launch_mode,
+ .set_address_watch = kgd_gfx_v9_set_address_watch,
+ .clear_address_watch = kgd_gfx_v9_clear_address_watch,
.get_iq_wait_times = kgd_gfx_v9_get_iq_wait_times,
.build_grace_period_packet_info = kgd_gfx_v9_build_grace_period_packet_info,
.get_cu_occupancy = kgd_gfx_v9_get_cu_occupancy,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.h
index 18f4970ac8e4..5f54bff0db49 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.h
@@ -84,6 +84,14 @@ uint32_t kgd_gfx_v9_set_wave_launch_trap_override(struct amdgpu_device *adev,
uint32_t trap_mask_request,
uint32_t *trap_mask_prev,
uint32_t kfd_dbg_trap_cntl_prev);
+uint32_t kgd_gfx_v9_set_address_watch(struct amdgpu_device *adev,
+ uint64_t watch_address,
+ uint32_t watch_address_mask,
+ uint32_t watch_id,
+ uint32_t watch_mode,
+ uint32_t debug_vmid);
+uint32_t kgd_gfx_v9_clear_address_watch(struct amdgpu_device *adev,
+ uint32_t watch_id);
void kgd_gfx_v9_get_iq_wait_times(struct amdgpu_device *adev, uint32_t *wait_times);
void kgd_gfx_v9_build_grace_period_packet_info(struct amdgpu_device *adev,
uint32_t wait_times,
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index adda60273456..e88be582d44d 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -2880,6 +2880,7 @@ static int kfd_ioctl_set_debug_trap(struct file *filep, struct kfd_process *p, v
struct mm_struct *mm = NULL;
struct pid *pid = NULL;
struct kfd_process *target = NULL;
+ struct kfd_process_device *pdd = NULL;
int r = 0;
if (sched_policy == KFD_SCHED_POLICY_NO_HWS) {
@@ -2957,6 +2958,20 @@ static int kfd_ioctl_set_debug_trap(struct file *filep, struct kfd_process *p, v
goto unlock_out;
}
+ if (args->op == KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH ||
+ args->op == KFD_IOC_DBG_TRAP_CLEAR_NODE_ADDRESS_WATCH) {
+ int user_gpu_id = kfd_process_get_user_gpu_id(target,
+ args->op == KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH ?
+ args->set_node_address_watch.gpu_id :
+ args->clear_node_address_watch.gpu_id);
+
+ pdd = kfd_process_device_data_by_id(target, user_gpu_id);
+ if (user_gpu_id == -EINVAL || !pdd) {
+ r = -ENODEV;
+ goto unlock_out;
+ }
+ }
+
switch (args->op) {
case KFD_IOC_DBG_TRAP_ENABLE:
if (target != p)
@@ -3009,7 +3024,16 @@ static int kfd_ioctl_set_debug_trap(struct file *filep, struct kfd_process *p, v
(uint32_t *)args->resume_queues.queue_array_ptr);
break;
case KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH:
+ r = kfd_dbg_trap_set_dev_address_watch(pdd,
+ args->set_node_address_watch.address,
+ args->set_node_address_watch.mask,
+ &args->set_node_address_watch.id,
+ args->set_node_address_watch.mode);
+ break;
case KFD_IOC_DBG_TRAP_CLEAR_NODE_ADDRESS_WATCH:
+ r = kfd_dbg_trap_clear_dev_address_watch(pdd,
+ args->clear_node_address_watch.id);
+ break;
case KFD_IOC_DBG_TRAP_SET_FLAGS:
case KFD_IOC_DBG_TRAP_QUERY_DEBUG_EVENT:
case KFD_IOC_DBG_TRAP_QUERY_EXCEPTION_INFO:
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c
index f4d3dfb35cb3..4b36cc8b5fb7 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c
@@ -24,6 +24,8 @@
#include "kfd_device_queue_manager.h"
#include <linux/file.h>
+#define MAX_WATCH_ADDRESSES 4
+
void debug_event_write_work_handler(struct work_struct *work)
{
struct kfd_process *process;
@@ -289,6 +291,139 @@ int kfd_dbg_set_mes_debug_mode(struct kfd_process_device *pdd)
pdd->watch_points, flags);
}
+#define KFD_DEBUGGER_INVALID_WATCH_POINT_ID -1
+static int kfd_dbg_get_dev_watch_id(struct kfd_process_device *pdd, int *watch_id)
+{
+ int i;
+
+ *watch_id = KFD_DEBUGGER_INVALID_WATCH_POINT_ID;
+
+ spin_lock(&pdd->dev->kfd->watch_points_lock);
+
+ for (i = 0; i < MAX_WATCH_ADDRESSES; i++) {
+ /* device watchpoint in use so skip */
+ if ((pdd->dev->kfd->alloc_watch_ids >> i) & 0x1)
+ continue;
+
+ pdd->alloc_watch_ids |= 0x1 << i;
+ pdd->dev->kfd->alloc_watch_ids |= 0x1 << i;
+ *watch_id = i;
+ spin_unlock(&pdd->dev->kfd->watch_points_lock);
+ return 0;
+ }
+
+ spin_unlock(&pdd->dev->kfd->watch_points_lock);
+
+ return -ENOMEM;
+}
+
+static void kfd_dbg_clear_dev_watch_id(struct kfd_process_device *pdd, int watch_id)
+{
+ spin_lock(&pdd->dev->kfd->watch_points_lock);
+
+ /* process owns device watch point so safe to clear */
+ if ((pdd->alloc_watch_ids >> watch_id) & 0x1) {
+ pdd->alloc_watch_ids &= ~(0x1 << watch_id);
+ pdd->dev->kfd->alloc_watch_ids &= ~(0x1 << watch_id);
+ }
+
+ spin_unlock(&pdd->dev->kfd->watch_points_lock);
+}
+
+static bool kfd_dbg_owns_dev_watch_id(struct kfd_process_device *pdd, int watch_id)
+{
+ bool owns_watch_id = false;
+
+ spin_lock(&pdd->dev->kfd->watch_points_lock);
+ owns_watch_id = watch_id < MAX_WATCH_ADDRESSES &&
+ ((pdd->alloc_watch_ids >> watch_id) & 0x1);
+
+ spin_unlock(&pdd->dev->kfd->watch_points_lock);
+
+ return owns_watch_id;
+}
+
+int kfd_dbg_trap_clear_dev_address_watch(struct kfd_process_device *pdd,
+ uint32_t watch_id)
+{
+ int r;
+
+ if (!kfd_dbg_owns_dev_watch_id(pdd, watch_id))
+ return -EINVAL;
+
+ if (!pdd->dev->kfd->shared_resources.enable_mes) {
+ r = debug_lock_and_unmap(pdd->dev->dqm);
+ if (r)
+ return r;
+ }
+
+ amdgpu_gfx_off_ctrl(pdd->dev->adev, false);
+ pdd->watch_points[watch_id] = pdd->dev->kfd2kgd->clear_address_watch(
+ pdd->dev->adev,
+ watch_id);
+ amdgpu_gfx_off_ctrl(pdd->dev->adev, true);
+
+ if (!pdd->dev->kfd->shared_resources.enable_mes)
+ r = debug_map_and_unlock(pdd->dev->dqm);
+ else
+ r = kfd_dbg_set_mes_debug_mode(pdd);
+
+ kfd_dbg_clear_dev_watch_id(pdd, watch_id);
+
+ return r;
+}
+
+int kfd_dbg_trap_set_dev_address_watch(struct kfd_process_device *pdd,
+ uint64_t watch_address,
+ uint32_t watch_address_mask,
+ uint32_t *watch_id,
+ uint32_t watch_mode)
+{
+ int r = kfd_dbg_get_dev_watch_id(pdd, watch_id);
+
+ if (r)
+ return r;
+
+ if (!pdd->dev->kfd->shared_resources.enable_mes) {
+ r = debug_lock_and_unmap(pdd->dev->dqm);
+ if (r) {
+ kfd_dbg_clear_dev_watch_id(pdd, *watch_id);
+ return r;
+ }
+ }
+
+ amdgpu_gfx_off_ctrl(pdd->dev->adev, false);
+ pdd->watch_points[*watch_id] = pdd->dev->kfd2kgd->set_address_watch(
+ pdd->dev->adev,
+ watch_address,
+ watch_address_mask,
+ *watch_id,
+ watch_mode,
+ pdd->dev->vm_info.last_vmid_kfd);
+ amdgpu_gfx_off_ctrl(pdd->dev->adev, true);
+
+ if (!pdd->dev->kfd->shared_resources.enable_mes)
+ r = debug_map_and_unlock(pdd->dev->dqm);
+ else
+ r = kfd_dbg_set_mes_debug_mode(pdd);
+
+ /* HWS is broken so no point in HW rollback but release the watchpoint anyways */
+ if (r)
+ kfd_dbg_clear_dev_watch_id(pdd, *watch_id);
+
+ return 0;
+}
+
+static void kfd_dbg_clear_process_address_watch(struct kfd_process *target)
+{
+ int i, j;
+
+ for (i = 0; i < target->n_pdds; i++)
+ for (j = 0; j < MAX_WATCH_ADDRESSES; j++)
+ kfd_dbg_trap_clear_dev_address_watch(target->pdds[i], j);
+}
+
+
/* kfd_dbg_trap_deactivate:
* target: target process
* unwind: If this is unwinding a failed kfd_dbg_trap_enable()
@@ -303,6 +438,7 @@ void kfd_dbg_trap_deactivate(struct kfd_process *target, bool unwind, int unwind
if (!unwind) {
cancel_work_sync(&target->debug_event_workarea);
+ kfd_dbg_clear_process_address_watch(target);
kfd_dbg_trap_set_wave_launch_mode(target, 0);
}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.h b/drivers/gpu/drm/amd/amdkfd/kfd_debug.h
index cb17869437c5..7f0757c2af2c 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.h
@@ -50,7 +50,13 @@ int kfd_dbg_trap_set_wave_launch_override(struct kfd_process *target,
uint32_t *trap_mask_supported);
int kfd_dbg_trap_set_wave_launch_mode(struct kfd_process *target,
uint8_t wave_launch_mode);
-
+int kfd_dbg_trap_clear_dev_address_watch(struct kfd_process_device *pdd,
+ uint32_t watch_id);
+int kfd_dbg_trap_set_dev_address_watch(struct kfd_process_device *pdd,
+ uint64_t watch_address,
+ uint32_t watch_address_mask,
+ uint32_t *watch_id,
+ uint32_t watch_mode);
int kfd_dbg_send_exception_to_runtime(struct kfd_process *p,
unsigned int dev_id,
unsigned int queue_id,
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 1eb57a4798f4..5b0f3be7d15f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -802,6 +802,8 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
if (kfd_resume_iommu(kfd))
goto kfd_resume_iommu_error;
+ spin_lock_init(&kfd->watch_points_lock);
+
kfd->init_complete = true;
dev_info(kfd_device, "added device %x:%x\n", kfd->adev->pdev->vendor,
kfd->adev->pdev->device);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index 05da43bf233a..8ec87bc8ba82 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -381,6 +381,10 @@ struct kfd_dev {
struct kfd_node *nodes[MAX_KFD_NODES];
unsigned int num_nodes;
+
+ /* Track per device allocated watch points */
+ uint32_t alloc_watch_ids;
+ spinlock_t watch_points_lock;
};
enum kfd_mempool {
@@ -833,6 +837,7 @@ struct kfd_process_device {
uint32_t spi_dbg_override;
uint32_t spi_dbg_launch_mode;
uint32_t watch_points[4];
+ uint32_t alloc_watch_ids;
/*
* If this process has been checkpointed before, then the user
@@ -989,7 +994,6 @@ struct kfd_process {
struct semaphore runtime_enable_sema;
bool is_runtime_retry;
struct kfd_runtime_info runtime_info;
-
};
#define KFD_PROCESS_TABLE_SIZE 5 /* bits: 32 entries */
--
2.25.1
