Commit 32977f93 authored by Tom St Denis's avatar Tom St Denis Committed by Alex Deucher

drm/amd/amdgpu: Allow broadcast on debugfs read (v2)

Allow any of the se/sh/instance fields to be
specified as a broadcast by submitting 0x3FF.

(v2) Fix broadcast range checking
Signed-off-by: default avatarTom St Denis <tom.stdenis@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5ecfb3b8
...@@ -2576,6 +2576,13 @@ static ssize_t amdgpu_debugfs_regs_read(struct file *f, char __user *buf, ...@@ -2576,6 +2576,13 @@ static ssize_t amdgpu_debugfs_regs_read(struct file *f, char __user *buf,
se_bank = (*pos >> 24) & 0x3FF; se_bank = (*pos >> 24) & 0x3FF;
sh_bank = (*pos >> 34) & 0x3FF; sh_bank = (*pos >> 34) & 0x3FF;
instance_bank = (*pos >> 44) & 0x3FF; instance_bank = (*pos >> 44) & 0x3FF;
if (se_bank == 0x3FF)
se_bank = 0xFFFFFFFF;
if (sh_bank == 0x3FF)
sh_bank = 0xFFFFFFFF;
if (instance_bank == 0x3FF)
instance_bank = 0xFFFFFFFF;
use_bank = 1; use_bank = 1;
} else { } else {
use_bank = 0; use_bank = 0;
...@@ -2584,8 +2591,8 @@ static ssize_t amdgpu_debugfs_regs_read(struct file *f, char __user *buf, ...@@ -2584,8 +2591,8 @@ static ssize_t amdgpu_debugfs_regs_read(struct file *f, char __user *buf,
*pos &= 0x3FFFF; *pos &= 0x3FFFF;
if (use_bank) { if (use_bank) {
if (sh_bank >= adev->gfx.config.max_sh_per_se || if ((sh_bank != 0xFFFFFFFF && sh_bank >= adev->gfx.config.max_sh_per_se) ||
se_bank >= adev->gfx.config.max_shader_engines) (se_bank != 0xFFFFFFFF && se_bank >= adev->gfx.config.max_shader_engines))
return -EINVAL; return -EINVAL;
mutex_lock(&adev->grbm_idx_mutex); mutex_lock(&adev->grbm_idx_mutex);
amdgpu_gfx_select_se_sh(adev, se_bank, amdgpu_gfx_select_se_sh(adev, se_bank,
......
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