diff options
| author | Michał Winiarski <michal.winiarski@intel.com> | 2017-12-14 01:13:46 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-12-14 11:06:52 +0300 |
| commit | 1bbbca0db722d137ed426368bff42b17808ad11e (patch) | |
| tree | a9637f211966ac853e0a7a485616ce27c07d7777 /drivers/gpu/drm/i915/intel_uc.c | |
| parent | 6ca9a2beb54a385c8cc5e39a9d2ef49945896c64 (diff) | |
| download | linux-1bbbca0db722d137ed426368bff42b17808ad11e.tar.xz | |
drm/i915/guc: Move shared data allocation away from submission path
We need shared data for actions (e.g. guc suspend/resume), and we're
using those with GuC submission disabled.
Let's introduce intel_guc_init and move shared data alloc there.
This fixes GPF during module unload with HuC, but without GuC submission:
BUG: unable to handle kernel NULL pointer dereference at 000000005aee7809
IP: intel_guc_suspend+0x34/0x140 [i915]
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in: i915(O-) netconsole x86_pkg_temp_thermal
intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel
mei_me i2c_i801 mei prime_numbers [last unloaded: i915]
CPU: 2 PID: 2794 Comm: rmmod Tainted: G U W O 4.15.0-rc2+ #297
Hardware name: /NUC6i5SYB, BIOS SYSKLi35.86A.0054.2016.0930.1102 09/30/2016
task: 0000000055945c61 task.stack: 00000000264ccb43
RIP: 0010:intel_guc_suspend+0x34/0x140 [i915]
RSP: 0018:ffffc90000483df8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff880829180000 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffff880844c2c938 RDI: ffff880844c2c000
RBP: ffff880829180000 R08: 00000000a29c58c1 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffa040ba40
R13: ffffffffa040bab0 R14: ffff88084a195060 R15: 000055df3ef357a0
FS: 00007ff43c043740(0000) GS:ffff88084e200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000f9 CR3: 000000083f179005 CR4: 00000000003606e0
Call Trace:
i915_gem_suspend+0x9d/0x130 [i915]
? i915_driver_unload+0x68/0x180 [i915]
i915_driver_unload+0x70/0x180 [i915]
i915_pci_remove+0x15/0x20 [i915]
pci_device_remove+0x36/0xb0
device_release_driver_internal+0x15f/0x220
driver_detach+0x3a/0x80
bus_remove_driver+0x58/0xd0
pci_unregister_driver+0x29/0x90
SyS_delete_module+0x150/0x1e0
entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x7ff43b51b5c7
RSP: 002b:00007ffe6825a758 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff43b51b5c7
RDX: 000000000000000a RSI: 0000000000000800 RDI: 000055df3ef35808
RBP: 0000000000000000 R08: 00007ffe682596d1 R09: 0000000000000000
R10: 00007ff43b594880 R11: 0000000000000206 R12: 000055df3ef357a0
R13: 00007ffe68259740 R14: 000055df3ef35260 R15: 000055df3ef357a0
Code: 00 00 02 74 03 31 c0 c3 53 48 89 fb 48 83 ec 10 e8 52 0f
f8 ff 48 b8 01 05 00 00 02 00 00 00 48 89 44 24 04 48 8b 83 00 12 00 00 <f6> 80
f9 00 00 00 01 0f 84 a7 00 00 00 f6 80 98 00 00 00 01 0f
RIP: intel_guc_suspend+0x34/0x140 [i915] RSP: ffffc90000483df8
CR2: 00000000000000f9
---[ end trace 23a192a61d937a3e ]---
Fixes: b8e5eb960b28 ("drm/i915/guc: Allocate separate shared data object for GuC communication")
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171213221352.7173-1-michal.winiarski@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_uc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_uc.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c index 461047c86e0d..3040a0e00142 100644 --- a/drivers/gpu/drm/i915/intel_uc.c +++ b/drivers/gpu/drm/i915/intel_uc.c @@ -24,6 +24,7 @@ #include "intel_uc.h" #include "intel_guc_submission.h" +#include "intel_guc.h" #include "i915_drv.h" /* Reset GuC providing us with fresh state for both GuC and HuC. @@ -204,8 +205,9 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv) guc_disable_communication(guc); gen9_reset_guc_interrupts(dev_priv); - /* We need to notify the guc whenever we change the GGTT */ - i915_ggtt_enable_guc(dev_priv); + ret = intel_guc_init(guc); + if (ret) + goto err_out; if (USES_GUC_SUBMISSION(dev_priv)) { /* @@ -298,7 +300,7 @@ err_submission: if (USES_GUC_SUBMISSION(dev_priv)) intel_guc_submission_fini(guc); err_guc: - i915_ggtt_disable_guc(dev_priv); + intel_guc_fini(guc); err_out: /* * Note that there is no fallback as either user explicitly asked for @@ -330,5 +332,5 @@ void intel_uc_fini_hw(struct drm_i915_private *dev_priv) intel_guc_submission_fini(guc); } - i915_ggtt_disable_guc(dev_priv); + intel_guc_fini(guc); } |