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authorAlex Deucher <alexander.deucher@amd.com>2013-06-14 02:26:25 +0400
committerAlex Deucher <alexander.deucher@amd.com>2013-07-14 18:11:28 +0400
commit54e2e49ce28ff7ac67b93e7e9e44702552b04a69 (patch)
tree8d24bc3fabb6dfd63fd9a6078fd0b0639222ab73 /drivers/gpu/drm/radeon/ni.c
parent0a168933976eb483da91161316bbbbcb74d00486 (diff)
downloadlinux-54e2e49ce28ff7ac67b93e7e9e44702552b04a69.tar.xz
drm/radeon: add fault decode function for cayman/TN (v2)
Helpful for debugging GPUVM errors as we can see what hw block and page generated the fault in the log. v2: simplify fault decoding Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/ni.c')
-rw-r--r--drivers/gpu/drm/radeon/ni.c161
1 files changed, 161 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 465b17e1fa4e..56bd4f3be4fe 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -2450,6 +2450,167 @@ void cayman_vm_fini(struct radeon_device *rdev)
{
}
+/**
+ * cayman_vm_decode_fault - print human readable fault info
+ *
+ * @rdev: radeon_device pointer
+ * @status: VM_CONTEXT1_PROTECTION_FAULT_STATUS register value
+ * @addr: VM_CONTEXT1_PROTECTION_FAULT_ADDR register value
+ *
+ * Print human readable fault information (cayman/TN).
+ */
+void cayman_vm_decode_fault(struct radeon_device *rdev,
+ u32 status, u32 addr)
+{
+ u32 mc_id = (status & MEMORY_CLIENT_ID_MASK) >> MEMORY_CLIENT_ID_SHIFT;
+ u32 vmid = (status & FAULT_VMID_MASK) >> FAULT_VMID_SHIFT;
+ u32 protections = (status & PROTECTIONS_MASK) >> PROTECTIONS_SHIFT;
+ char *block;
+
+ switch (mc_id) {
+ case 32:
+ case 16:
+ case 96:
+ case 80:
+ case 160:
+ case 144:
+ case 224:
+ case 208:
+ block = "CB";
+ break;
+ case 33:
+ case 17:
+ case 97:
+ case 81:
+ case 161:
+ case 145:
+ case 225:
+ case 209:
+ block = "CB_FMASK";
+ break;
+ case 34:
+ case 18:
+ case 98:
+ case 82:
+ case 162:
+ case 146:
+ case 226:
+ case 210:
+ block = "CB_CMASK";
+ break;
+ case 35:
+ case 19:
+ case 99:
+ case 83:
+ case 163:
+ case 147:
+ case 227:
+ case 211:
+ block = "CB_IMMED";
+ break;
+ case 36:
+ case 20:
+ case 100:
+ case 84:
+ case 164:
+ case 148:
+ case 228:
+ case 212:
+ block = "DB";
+ break;
+ case 37:
+ case 21:
+ case 101:
+ case 85:
+ case 165:
+ case 149:
+ case 229:
+ case 213:
+ block = "DB_HTILE";
+ break;
+ case 38:
+ case 22:
+ case 102:
+ case 86:
+ case 166:
+ case 150:
+ case 230:
+ case 214:
+ block = "SX";
+ break;
+ case 39:
+ case 23:
+ case 103:
+ case 87:
+ case 167:
+ case 151:
+ case 231:
+ case 215:
+ block = "DB_STEN";
+ break;
+ case 40:
+ case 24:
+ case 104:
+ case 88:
+ case 232:
+ case 216:
+ case 168:
+ case 152:
+ block = "TC_TFETCH";
+ break;
+ case 41:
+ case 25:
+ case 105:
+ case 89:
+ case 233:
+ case 217:
+ case 169:
+ case 153:
+ block = "TC_VFETCH";
+ break;
+ case 42:
+ case 26:
+ case 106:
+ case 90:
+ case 234:
+ case 218:
+ case 170:
+ case 154:
+ block = "VC";
+ break;
+ case 112:
+ block = "CP";
+ break;
+ case 113:
+ case 114:
+ block = "SH";
+ break;
+ case 115:
+ block = "VGT";
+ break;
+ case 178:
+ block = "IH";
+ break;
+ case 51:
+ block = "RLC";
+ break;
+ case 55:
+ block = "DMA";
+ break;
+ case 56:
+ block = "HDP";
+ break;
+ default:
+ block = "unknown";
+ break;
+ }
+
+ printk("VM fault (0x%02x, vmid %d) at page %u, %s from %s (%d)\n",
+ protections, vmid, addr,
+ (status & MEMORY_CLIENT_RW_MASK) ? "write" : "read",
+ block, mc_id);
+}
+
#define R600_ENTRY_VALID (1 << 0)
#define R600_PTE_SYSTEM (1 << 1)
#define R600_PTE_SNOOPED (1 << 2)