Commit Graph

96506 Commits

Author SHA1 Message Date
Harshit Mogalapalli
10f49cdfd5 i915/perf: Fix NULL deref bugs with drm_dbg() calls
commit 471aa951bf upstream.

When i915 perf interface is not available dereferencing it will lead to
NULL dereferences.

As returning -ENOTSUPP is pretty clear return when perf interface is not
available.

Fixes: 2fec539112 ("i915/perf: Replace DRM_DEBUG with driver specific drm_dbg call")
Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: <stable@vger.kernel.org> # v6.0+
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231027172822.2753059-1-harshit.m.mogalapalli@oracle.com
[tursulin: added stable tag]
(cherry picked from commit 36f27350ff)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-11-28 17:19:54 +00:00
Nirmoy Das
8ebe2d452f drm/i915/tc: Fix -Wformat-truncation in intel_tc_port_init
[ Upstream commit 9506fba463 ]

Fix below compiler warning:

intel_tc.c:1879:11: error: ‘%d’ directive output may be truncated
writing between 1 and 11 bytes into a region of size 3
[-Werror=format-truncation=]
"%c/TC#%d", port_name(port), tc_port + 1);
           ^~
intel_tc.c:1878:2: note: ‘snprintf’ output between 7 and 17 bytes
into a destination of size 8
  snprintf(tc->port_name, sizeof(tc->port_name),
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    "%c/TC#%d", port_name(port), tc_port + 1);
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

v2: use kasprintf(Imre)
v3: use const for port_name, and fix tc mem leak(Imre)

Fixes: 3eafcddf76 ("drm/i915/tc: Move TC port fields to a new intel_tc_port struct")
Cc: Mika Kahola <mika.kahola@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231026125636.5080-1-nirmoy.das@intel.com
(cherry picked from commit 70a3cbbe62)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:49 +00:00
Arnd Bergmann
9b0cebc70d drm/i915/mtl: avoid stringop-overflow warning
[ Upstream commit 390001d648 ]

The newly added memset() causes a warning for some reason I could not
figure out:

In file included from arch/x86/include/asm/string.h:3,
                 from drivers/gpu/drm/i915/gt/intel_rc6.c:6:
In function 'rc6_res_reg_init',
    inlined from 'intel_rc6_init' at drivers/gpu/drm/i915/gt/intel_rc6.c:610:2:
arch/x86/include/asm/string_32.h:195:29: error: '__builtin_memset' writing 16 bytes into a region of size 0 overflows the destination [-Werror=stringop-overflow=]
  195 | #define memset(s, c, count) __builtin_memset(s, c, count)
      |                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/gt/intel_rc6.c:584:9: note: in expansion of macro 'memset'
  584 |         memset(rc6->res_reg, INVALID_MMIO_REG.reg, sizeof(rc6->res_reg));
      |         ^~~~~~
In function 'intel_rc6_init':

Change it to an normal initializer and an added memcpy() that does not have
this problem.

Fixes: 4bb9ca7ee0 ("drm/i915/mtl: C6 residency and C state type for MTL SAMedia")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231016201012.1022812-1-arnd@kernel.org
(cherry picked from commit 0520b30b21)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:48 +00:00
Vitaly Prosyak
de1c09598b drm/amdgpu: fix software pci_unplug on some chips
[ Upstream commit 4638e0c29a ]

When software 'pci unplug' using IGT is executed we got a sysfs directory
entry is NULL for differant ras blocks like hdp, umc, etc.
Before call 'sysfs_remove_file_from_group' and 'sysfs_remove_group'
check that 'sd' is  not NULL.

[  +0.000001] RIP: 0010:sysfs_remove_group+0x83/0x90
[  +0.000002] Code: 31 c0 31 d2 31 f6 31 ff e9 9a a8 b4 00 4c 89 e7 e8 f2 a2 ff ff eb c2 49 8b 55 00 48 8b 33 48 c7 c7 80 65 94 82 e8 cd 82 bb ff <0f> 0b eb cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90
[  +0.000001] RSP: 0018:ffffc90002067c90 EFLAGS: 00010246
[  +0.000002] RAX: 0000000000000000 RBX: ffffffff824ea180 RCX: 0000000000000000
[  +0.000001] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[  +0.000001] RBP: ffffc90002067ca8 R08: 0000000000000000 R09: 0000000000000000
[  +0.000001] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[  +0.000001] R13: ffff88810a395f48 R14: ffff888101aab0d0 R15: 0000000000000000
[  +0.000001] FS:  00007f5ddaa43a00(0000) GS:ffff88841e800000(0000) knlGS:0000000000000000
[  +0.000002] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  +0.000001] CR2: 00007f8ffa61ba50 CR3: 0000000106432000 CR4: 0000000000350ef0
[  +0.000001] Call Trace:
[  +0.000001]  <TASK>
[  +0.000001]  ? show_regs+0x72/0x90
[  +0.000002]  ? sysfs_remove_group+0x83/0x90
[  +0.000002]  ? __warn+0x8d/0x160
[  +0.000001]  ? sysfs_remove_group+0x83/0x90
[  +0.000001]  ? report_bug+0x1bb/0x1d0
[  +0.000003]  ? handle_bug+0x46/0x90
[  +0.000001]  ? exc_invalid_op+0x19/0x80
[  +0.000002]  ? asm_exc_invalid_op+0x1b/0x20
[  +0.000003]  ? sysfs_remove_group+0x83/0x90
[  +0.000001]  dpm_sysfs_remove+0x61/0x70
[  +0.000002]  device_del+0xa3/0x3d0
[  +0.000002]  ? ktime_get_mono_fast_ns+0x46/0xb0
[  +0.000002]  device_unregister+0x18/0x70
[  +0.000001]  i2c_del_adapter+0x26d/0x330
[  +0.000002]  arcturus_i2c_control_fini+0x25/0x50 [amdgpu]
[  +0.000236]  smu_sw_fini+0x38/0x260 [amdgpu]
[  +0.000241]  amdgpu_device_fini_sw+0x116/0x670 [amdgpu]
[  +0.000186]  ? mutex_lock+0x13/0x50
[  +0.000003]  amdgpu_driver_release_kms+0x16/0x40 [amdgpu]
[  +0.000192]  drm_minor_release+0x4f/0x80 [drm]
[  +0.000025]  drm_release+0xfe/0x150 [drm]
[  +0.000027]  __fput+0x9f/0x290
[  +0.000002]  ____fput+0xe/0x20
[  +0.000002]  task_work_run+0x61/0xa0
[  +0.000002]  exit_to_user_mode_prepare+0x150/0x170
[  +0.000002]  syscall_exit_to_user_mode+0x2a/0x50

Cc: Hawking Zhang <hawking.zhang@amd.com>
Cc: Luben Tuikov <luben.tuikov@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian Koenig <christian.koenig@amd.com>
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:47 +00:00
Zongmin Zhou
01834d420e drm/qxl: prevent memory leak
[ Upstream commit 0e8b9f258b ]

The allocated memory for qdev->dumb_heads should be released
in qxl_destroy_monitors_object before qxl suspend.
otherwise,qxl_create_monitors_object will be called to
reallocate memory for qdev->dumb_heads after qxl resume,
it will cause memory leak.

Signed-off-by: Zongmin Zhou <zhouzongmin@kylinos.cn>
Link: https://lore.kernel.org/r/20230801025309.4049813-1-zhouzongmin@kylinos.cn
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:47 +00:00
Wayne Lin
df8bc953ee drm/amd/display: Avoid NULL dereference of timing generator
[ Upstream commit b1904ed480 ]

[Why & How]
Check whether assigned timing generator is NULL or not before
accessing its funcs to prevent NULL dereference.

Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Hersen Wu <hersenxs.wu@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:47 +00:00
Lin.Cao
09f617219f drm/amd: check num of link levels when update pcie param
[ Upstream commit 406e884535 ]

In SR-IOV environment, the value of pcie_table->num_of_link_levels will
be 0, and num_of_levels - 1 will cause array index out of bounds

Signed-off-by: Lin.Cao <lincao12@amd.com>
Acked-by: Jingwen Chen <Jingwen.Chen2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Samson Tam
b58ace0e8c drm/amd/display: fix num_ways overflow error
[ Upstream commit 79f3f1b667 ]

[Why]
Helper function calculates num_ways using 32-bit.  But is
 returned as 8-bit.  If num_ways exceeds 8-bit, then it
 reports back the incorrect num_ways and erroneously
 uses MALL when it should not

[How]
Make returned value 32-bit and convert after it checks
 against caps.cache_num_ways, which is under 8-bit

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Samson Tam <samson.tam@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Mario Limonciello
745682e634 drm/amd: Disable PP_PCIE_DPM_MASK when dynamic speed switching not supported
[ Upstream commit fbf1035b03 ]

Rather than individual ASICs checking for the quirk, set the quirk at the
driver level.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Qu Huang
ba3c0796d2 drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL
[ Upstream commit 5104fdf50d ]

In certain types of chips, such as VEGA20, reading the amdgpu_regs_smc file could result in an abnormal null pointer access when the smc_rreg pointer is NULL. Below are the steps to reproduce this issue and the corresponding exception log:

1. Navigate to the directory: /sys/kernel/debug/dri/0
2. Execute command: cat amdgpu_regs_smc
3. Exception Log::
[4005007.702554] BUG: kernel NULL pointer dereference, address: 0000000000000000
[4005007.702562] #PF: supervisor instruction fetch in kernel mode
[4005007.702567] #PF: error_code(0x0010) - not-present page
[4005007.702570] PGD 0 P4D 0
[4005007.702576] Oops: 0010 [#1] SMP NOPTI
[4005007.702581] CPU: 4 PID: 62563 Comm: cat Tainted: G           OE     5.15.0-43-generic #46-Ubunt       u
[4005007.702590] RIP: 0010:0x0
[4005007.702598] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
[4005007.702600] RSP: 0018:ffffa82b46d27da0 EFLAGS: 00010206
[4005007.702605] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffa82b46d27e68
[4005007.702609] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9940656e0000
[4005007.702612] RBP: ffffa82b46d27dd8 R08: 0000000000000000 R09: ffff994060c07980
[4005007.702615] R10: 0000000000020000 R11: 0000000000000000 R12: 00007f5e06753000
[4005007.702618] R13: ffff9940656e0000 R14: ffffa82b46d27e68 R15: 00007f5e06753000
[4005007.702622] FS:  00007f5e0755b740(0000) GS:ffff99479d300000(0000) knlGS:0000000000000000
[4005007.702626] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[4005007.702629] CR2: ffffffffffffffd6 CR3: 00000003253fc000 CR4: 00000000003506e0
[4005007.702633] Call Trace:
[4005007.702636]  <TASK>
[4005007.702640]  amdgpu_debugfs_regs_smc_read+0xb0/0x120 [amdgpu]
[4005007.703002]  full_proxy_read+0x5c/0x80
[4005007.703011]  vfs_read+0x9f/0x1a0
[4005007.703019]  ksys_read+0x67/0xe0
[4005007.703023]  __x64_sys_read+0x19/0x20
[4005007.703028]  do_syscall_64+0x5c/0xc0
[4005007.703034]  ? do_user_addr_fault+0x1e3/0x670
[4005007.703040]  ? exit_to_user_mode_prepare+0x37/0xb0
[4005007.703047]  ? irqentry_exit_to_user_mode+0x9/0x20
[4005007.703052]  ? irqentry_exit+0x19/0x30
[4005007.703057]  ? exc_page_fault+0x89/0x160
[4005007.703062]  ? asm_exc_page_fault+0x8/0x30
[4005007.703068]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[4005007.703075] RIP: 0033:0x7f5e07672992
[4005007.703079] Code: c0 e9 b2 fe ff ff 50 48 8d 3d fa b2 0c 00 e8 c5 1d 02 00 0f 1f 44 00 00 f3 0f        1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 0f 05 <48> 3d 00 f0 ff ff 77 56 c3 0f 1f 44 00 00 48 83 e       c 28 48 89 54 24
[4005007.703083] RSP: 002b:00007ffe03097898 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[4005007.703088] RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007f5e07672992
[4005007.703091] RDX: 0000000000020000 RSI: 00007f5e06753000 RDI: 0000000000000003
[4005007.703094] RBP: 00007f5e06753000 R08: 00007f5e06752010 R09: 00007f5e06752010
[4005007.703096] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000022000
[4005007.703099] R13: 0000000000000003 R14: 0000000000020000 R15: 0000000000020000
[4005007.703105]  </TASK>
[4005007.703107] Modules linked in: nf_tables libcrc32c nfnetlink algif_hash af_alg binfmt_misc nls_       iso8859_1 ipmi_ssif ast intel_rapl_msr intel_rapl_common drm_vram_helper drm_ttm_helper amd64_edac t       tm edac_mce_amd kvm_amd ccp mac_hid k10temp kvm acpi_ipmi ipmi_si rapl sch_fq_codel ipmi_devintf ipm       i_msghandler msr parport_pc ppdev lp parport mtd pstore_blk efi_pstore ramoops pstore_zone reed_solo       mon ip_tables x_tables autofs4 ib_uverbs ib_core amdgpu(OE) amddrm_ttm_helper(OE) amdttm(OE) iommu_v       2 amd_sched(OE) amdkcl(OE) drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops cec rc_core        drm igb ahci xhci_pci libahci i2c_piix4 i2c_algo_bit xhci_pci_renesas dca
[4005007.703184] CR2: 0000000000000000
[4005007.703188] ---[ end trace ac65a538d240da39 ]---
[4005007.800865] RIP: 0010:0x0
[4005007.800871] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
[4005007.800874] RSP: 0018:ffffa82b46d27da0 EFLAGS: 00010206
[4005007.800878] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffa82b46d27e68
[4005007.800881] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9940656e0000
[4005007.800883] RBP: ffffa82b46d27dd8 R08: 0000000000000000 R09: ffff994060c07980
[4005007.800886] R10: 0000000000020000 R11: 0000000000000000 R12: 00007f5e06753000
[4005007.800888] R13: ffff9940656e0000 R14: ffffa82b46d27e68 R15: 00007f5e06753000
[4005007.800891] FS:  00007f5e0755b740(0000) GS:ffff99479d300000(0000) knlGS:0000000000000000
[4005007.800895] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[4005007.800898] CR2: ffffffffffffffd6 CR3: 00000003253fc000 CR4: 00000000003506e0

Signed-off-by: Qu Huang <qu.huang@linux.dev>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Jesse Zhang
56649c43d4 drm/amdkfd: Fix shift out-of-bounds issue
[ Upstream commit 282c1d7930 ]

[  567.613292] shift exponent 255 is too large for 64-bit type 'long unsigned int'
[  567.614498] CPU: 5 PID: 238 Comm: kworker/5:1 Tainted: G           OE      6.2.0-34-generic #34~22.04.1-Ubuntu
[  567.614502] Hardware name: AMD Splinter/Splinter-RPL, BIOS WS43927N_871 09/25/2023
[  567.614504] Workqueue: events send_exception_work_handler [amdgpu]
[  567.614748] Call Trace:
[  567.614750]  <TASK>
[  567.614753]  dump_stack_lvl+0x48/0x70
[  567.614761]  dump_stack+0x10/0x20
[  567.614763]  __ubsan_handle_shift_out_of_bounds+0x156/0x310
[  567.614769]  ? srso_alias_return_thunk+0x5/0x7f
[  567.614773]  ? update_sd_lb_stats.constprop.0+0xf2/0x3c0
[  567.614780]  svm_range_split_by_granularity.cold+0x2b/0x34 [amdgpu]
[  567.615047]  ? srso_alias_return_thunk+0x5/0x7f
[  567.615052]  svm_migrate_to_ram+0x185/0x4d0 [amdgpu]
[  567.615286]  do_swap_page+0x7b6/0xa30
[  567.615291]  ? srso_alias_return_thunk+0x5/0x7f
[  567.615294]  ? __free_pages+0x119/0x130
[  567.615299]  handle_pte_fault+0x227/0x280
[  567.615303]  __handle_mm_fault+0x3c0/0x720
[  567.615311]  handle_mm_fault+0x119/0x330
[  567.615314]  ? lock_mm_and_find_vma+0x44/0x250
[  567.615318]  do_user_addr_fault+0x1a9/0x640
[  567.615323]  exc_page_fault+0x81/0x1b0
[  567.615328]  asm_exc_page_fault+0x27/0x30
[  567.615332] RIP: 0010:__get_user_8+0x1c/0x30

Signed-off-by: Jesse Zhang <jesse.zhang@amd.com>
Suggested-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Ondrej Jirman
1afe397315 drm/panel: st7703: Pick different reset sequence
[ Upstream commit d12d635bb0 ]

Switching to a different reset sequence, enabling IOVCC before enabling
VCC.

There also needs to be a delay after enabling the supplies and before
deasserting the reset. The datasheet specifies 1ms after the supplies
reach the required voltage. Use 10-20ms to also give the power supplies
some time to reach the required voltage, too.

This fixes intermittent panel initialization failures and screen
corruption during resume from sleep on panel xingbangda,xbd599 (e.g.
used in PinePhone).

Signed-off-by: Ondrej Jirman <megi@xff.cz>
Signed-off-by: Frank Oltmanns <frank@oltmanns.dev>
Reported-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Tested-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230211171748.36692-2-frank@oltmanns.dev
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Ma Ke
70f831f211 drm/amdgpu/vkms: fix a possible null pointer dereference
[ Upstream commit cd90511557 ]

In amdgpu_vkms_conn_get_modes(), the return value of drm_cvt_mode()
is assigned to mode, which will lead to a NULL pointer dereference
on failure of drm_cvt_mode(). Add a check to avoid null pointer
dereference.

Signed-off-by: Ma Ke <make_ruc2021@163.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Ma Ke
c0fe7aacc3 drm/radeon: fix a possible null pointer dereference
[ Upstream commit 2c1fe3c480 ]

In radeon_tv_get_modes(), the return value of drm_cvt_mode()
is assigned to mode, which will lead to a NULL pointer
dereference on failure of drm_cvt_mode(). Add a check to
avoid null point dereference.

Signed-off-by: Ma Ke <make_ruc2021@163.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Ma Ke
eaede6900c drm/panel/panel-tpo-tpg110: fix a possible null pointer dereference
[ Upstream commit f22def5970 ]

In tpg110_get_modes(), the return value of drm_mode_duplicate() is
assigned to mode, which will lead to a NULL pointer dereference on
failure of drm_mode_duplicate(). Add a check to avoid npd.

Signed-off-by: Ma Ke <make_ruc2021@163.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231009090446.4043798-1-make_ruc2021@163.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231009090446.4043798-1-make_ruc2021@163.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Ma Ke
8a9dd36fcb drm/panel: fix a possible null pointer dereference
[ Upstream commit 924e5814d1 ]

In versatile_panel_get_modes(), the return value of drm_mode_duplicate()
is assigned to mode, which will lead to a NULL pointer dereference
on failure of drm_mode_duplicate(). Add a check to avoid npd.

Signed-off-by: Ma Ke <make_ruc2021@163.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231007033105.3997998-1-make_ruc2021@163.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231007033105.3997998-1-make_ruc2021@163.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Stanley.Yang
da46e63482 drm/amdgpu: Fix potential null pointer derefernce
[ Upstream commit 80285ae1ec ]

The amdgpu_ras_get_context may return NULL if device
not support ras feature, so add check before using.

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:41 +00:00
Mario Limonciello
b3b8b7c040 drm/amd: Fix UBSAN array-index-out-of-bounds for Polaris and Tonga
[ Upstream commit 0f0e59075b ]

For pptable structs that use flexible array sizes, use flexible arrays.

Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2036742
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:40 +00:00
Mario Limonciello
92a775e7c9 drm/amd: Fix UBSAN array-index-out-of-bounds for SMU7
[ Upstream commit 760efbca74 ]

For pptable structs that use flexible array sizes, use flexible arrays.

Suggested-by: Felix Held <felix.held@amd.com>
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2874
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:40 +00:00
Jani Nikula
ea1e7d6fdc drm/msm/dp: skip validity check for DP CTS EDID checksum
[ Upstream commit a251c9d8e3 ]

The DP CTS test for EDID last block checksum expects the checksum for
the last block, invalid or not. Skip the validity check.

For the most part (*), the EDIDs returned by drm_get_edid() will be
valid anyway, and there's the CTS workaround to get the checksum for
completely invalid EDIDs. See commit 7948fe12d4 ("drm/msm/dp: return
correct edid checksum after corrupted edid checksum read").

This lets us remove one user of drm_edid_block_valid() with hopes the
function can be removed altogether in the future.

(*) drm_get_edid() ignores checksum errors on CTA extensions.

Cc: Abhinav Kumar <quic_abhinavk@quicinc.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Kuogee Hsieh <khsieh@codeaurora.org>
Cc: Marijn Suijten <marijn.suijten@somainline.org>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Sean Paul <sean@poorly.run>
Cc: Stephen Boyd <swboyd@chromium.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/555361/
Link: https://lore.kernel.org/r/20230901142034.580802-1-jani.nikula@intel.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:40 +00:00
Philipp Stanner
21e29f1437 drm: vmwgfx_surface.c: copy user-array safely
[ Upstream commit 06ab64a0d8 ]

Currently, there is no overflow-check with memdup_user().

Use the new function memdup_array_user() instead of memdup_user() for
duplicating the user-space array safely.

Suggested-by: David Airlie <airlied@redhat.com>
Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230920123612.16914-7-pstanner@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:40 +00:00
Philipp Stanner
ea42bc3307 drm_lease.c: copy user-array safely
[ Upstream commit f37d63e219 ]

Currently, there is no overflow-check with memdup_user().

Use the new function memdup_array_user() instead of memdup_user() for
duplicating the user-space array safely.

Suggested-by: David Airlie <airlied@redhat.com>
Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230920123612.16914-6-pstanner@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:40 +00:00
Wenjing Liu
dec0a70e52 drm/amd/display: use full update for clip size increase of large plane source
[ Upstream commit 05b78277ef ]

[why]
Clip size increase will increase viewport, which could cause us to
switch  to MPC combine.
If we skip full update, we are not able to change to MPC combine in
fast update. This will cause corruption showing on the video plane.

[how]
treat clip size increase of a surface larger than 5k as a full update.

Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:40 +00:00
Mario Limonciello
82c4cf2c05 drm/amd: Update update_pcie_parameters functions to use uint8_t arguments
[ Upstream commit 7752ccf85b ]

The matching values for `pcie_gen_cap` and `pcie_width_cap` when
fetched from powerplay tables are 1 byte, so narrow the arguments
to match to ensure min() and max() comparisons without casts.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:40 +00:00
Tao Zhou
b39f1303b9 drm/amdgpu: update retry times for psp vmbx wait
[ Upstream commit fc59889071 ]

Increase the retry loops and replace the constant number with macro.

Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:40 +00:00
Xiaogang Chen
fc02107201 drm/amdkfd: Fix a race condition of vram buffer unref in svm code
[ Upstream commit 709c348261 ]

prange->svm_bo unref can happen in both mmu callback and a callback after
migrate to system ram. Both are async call in different tasks. Sync svm_bo
unref operation to avoid random "use-after-free".

Signed-off-by: Xiaogang Chen <xiaogang.chen@amd.com>
Reviewed-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Jesse Zhang <Jesse.Zhang@amd.com>
Tested-by: Jesse Zhang <Jesse.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:40 +00:00
David (Ming Qiang) Wu
0a810a3fc6 drm/amdgpu: not to save bo in the case of RAS err_event_athub
[ Upstream commit fa1f1cc09d ]

err_event_athub will corrupt VCPU buffer and not good to
be restored in amdgpu_vcn_resume() and in this case
the VCPU buffer needs to be cleared for VCN firmware to
work properly.

Acked-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: David (Ming Qiang) Wu <David.Wu3@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:39 +00:00
Ville Syrjälä
d78c4efaeb drm/edid: Fixup h/vsync_end instead of h/vtotal
[ Upstream commit 2682768bde ]

There are some weird EDIDs floating around that have the sync
pulse extending beyond the end of the blanking period.

On the currently problemtic machine (HP Omni 120) EDID reports
the following mode:
"1600x900": 60 108000 1600 1780 1860 1800 900 910 913 1000 0x40 0x5
which is then "corrected" to have htotal=1861 by the current drm_edid.c
code.

The fixup code was originally added in commit 7064fef563 ("drm: work
around EDIDs with bad htotal/vtotal values"). Googling around we end up in
https://bugs.launchpad.net/ubuntu/hardy/+source/xserver-xorg-video-intel/+bug/297245
where we find an EDID for a Dell Studio 15, which reports:
(II) VESA(0): clock: 65.0 MHz   Image Size:  331 x 207 mm
(II) VESA(0): h_active: 1280  h_sync: 1328  h_sync_end 1360 h_blank_end 1337 h_border: 0
(II) VESA(0): v_active: 800  v_sync: 803  v_sync_end 809 v_blanking: 810 v_border: 0

Note that if we use the hblank size (as opposed of the hsync_end)
from the DTD to determine htotal we get exactly 60Hz refresh rate in
both cases, whereas using hsync_end to determine htotal we get a
slightly lower refresh rates. This makes me believe the using the
hblank size is what was intended even in those cases.

Also note that in case of the HP Onmi 120 the VBIOS boots with these:
  crtc timings: 108000 1600 1780 1860 1800 900 910 913 1000, type: 0x40 flags: 0x5
ie. it just blindly stuffs the bogus hsync_end and htotal from the DTD
into the transcoder timing registers, and the display works. I believe
the (at least more modern) hardware will automagically terminate the hsync
pulse when the timing generator reaches htotal, which again points that we
should use the hblank size to determine htotal. Unfortunatley the old bug
reports for the Dell machines are extremely lacking in useful details so
we have no idea what kind of timings the VBIOS programmed into the
hardware :(

Let's just flip this quirk around and reduce the length of the sync
pulse instead of extending the blanking period. This at least seems
to be the correct thing to do on more modern hardware. And if any
issues crop up on older hardware we need to debug them properly.

v2: Add debug message breadcrumbs (Jani)

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8895
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230920211934.14920-1-ville.syrjala@linux.intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:39 +00:00
Wenjing Liu
ea971fd05f drm/amd/display: add seamless pipe topology transition check
[ Upstream commit 15c6798ae2 ]

[why]
We have a few cases where we need to perform update topology update
in dc update interface. However some of the updates are not seamless
This could cause user noticible glitches. To enforce seamless transition
we are adding a checking condition and error logging so the corruption
as result of non seamless transition can be easily spotted.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:39 +00:00
Alvin Lee
f95d571bb5 drm/amd/display: Don't lock phantom pipe on disabling
[ Upstream commit cbb4c9bc55 ]

[Description]
- When disabling a phantom pipe, we first enable the phantom
  OTG so the double buffer update can successfully take place
- However, want to avoid locking the phantom otherwise setting
  DPG_EN=1 for the phantom pipe is blocked (without this we could
  hit underflow due to phantom HUBP being blanked by default)

Reviewed-by: Samson Tam <samson.tam@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:39 +00:00
Alvin Lee
67af2e23e2 drm/amd/display: Blank phantom OTG before enabling
[ Upstream commit e87a6c5b77 ]

[Description]
Before enabling the phantom OTG for an update we
must enable DPG to avoid underflow.

Reviewed-by: Samson Tam <samson.tam@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:39 +00:00
baozhu.liu
aa359db882 drm/komeda: drop all currently held locks if deadlock happens
[ Upstream commit 19ecbe8325 ]

If komeda_pipeline_unbound_components() returns -EDEADLK,
it means that a deadlock happened in the locking context.
Currently, komeda is not dealing with the deadlock properly,producing the
following output when CONFIG_DEBUG_WW_MUTEX_SLOWPATH is enabled:

 ------------[ cut here ]------------
[   26.103984] WARNING: CPU: 2 PID: 345 at drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:1248
	       komeda_release_unclaimed_resources+0x13c/0x170
[   26.117453] Modules linked in:
[   26.120511] CPU: 2 PID: 345 Comm: composer@2.1-se Kdump: loaded Tainted: G   W  5.10.110-SE-SDK1.8-dirty #16
[   26.131374] Hardware name: Siengine Se1000 Evaluation board (DT)
[   26.137379] pstate: 20400009 (nzCv daif +PAN -UAO -TCO BTYPE=--)
[   26.143385] pc : komeda_release_unclaimed_resources+0x13c/0x170
[   26.149301] lr : komeda_release_unclaimed_resources+0xbc/0x170
[   26.155130] sp : ffff800017b8b8d0
[   26.158442] pmr_save: 000000e0
[   26.161493] x29: ffff800017b8b8d0 x28: ffff000cf2f96200
[   26.166805] x27: ffff000c8f5a8800 x26: 0000000000000000
[   26.172116] x25: 0000000000000038 x24: ffff8000116a0140
[   26.177428] x23: 0000000000000038 x22: ffff000cf2f96200
[   26.182739] x21: ffff000cfc300300 x20: ffff000c8ab77080
[   26.188051] x19: 0000000000000003 x18: 0000000000000000
[   26.193362] x17: 0000000000000000 x16: 0000000000000000
[   26.198672] x15: b400e638f738ba38 x14: 0000000000000000
[   26.203983] x13: 0000000106400a00 x12: 0000000000000000
[   26.209294] x11: 0000000000000000 x10: 0000000000000000
[   26.214604] x9 : ffff800012f80000 x8 : ffff000ca3308000
[   26.219915] x7 : 0000000ff3000000 x6 : ffff80001084034c
[   26.225226] x5 : ffff800017b8bc40 x4 : 000000000000000f
[   26.230536] x3 : ffff000ca3308000 x2 : 0000000000000000
[   26.235847] x1 : 0000000000000000 x0 : ffffffffffffffdd
[   26.241158] Call trace:
[   26.243604] komeda_release_unclaimed_resources+0x13c/0x170
[   26.249175] komeda_crtc_atomic_check+0x68/0xf0
[   26.253706] drm_atomic_helper_check_planes+0x138/0x1f4
[   26.258929] komeda_kms_check+0x284/0x36c
[   26.262939] drm_atomic_check_only+0x40c/0x714
[   26.267381] drm_atomic_nonblocking_commit+0x1c/0x60
[   26.272344] drm_mode_atomic_ioctl+0xa3c/0xb8c
[   26.276787] drm_ioctl_kernel+0xc4/0x120
[   26.280708] drm_ioctl+0x268/0x534
[   26.284109] __arm64_sys_ioctl+0xa8/0xf0
[   26.288030] el0_svc_common.constprop.0+0x80/0x240
[   26.292817] do_el0_svc+0x24/0x90
[   26.296132] el0_svc+0x20/0x30
[   26.299185] el0_sync_handler+0xe8/0xf0
[   26.303018] el0_sync+0x1a4/0x1c0
[   26.306330] irq event stamp: 0
[   26.309384] hardirqs last  enabled at (0): [<0000000000000000>] 0x0
[   26.315650] hardirqs last disabled at (0): [<ffff800010056d34>] copy_process+0x5d0/0x183c
[   26.323825] softirqs last  enabled at (0): [<ffff800010056d34>] copy_process+0x5d0/0x183c
[   26.331997] softirqs last disabled at (0): [<0000000000000000>] 0x0
[   26.338261] ---[ end trace 20ae984fa860184a ]---
[   26.343021] ------------[ cut here ]------------
[   26.347646] WARNING: CPU: 3 PID: 345 at drivers/gpu/drm/drm_modeset_lock.c:228 drm_modeset_drop_locks+0x84/0x90
[   26.357727] Modules linked in:
[   26.360783] CPU: 3 PID: 345 Comm: composer@2.1-se Kdump: loaded Tainted: G   W  5.10.110-SE-SDK1.8-dirty #16
[   26.371645] Hardware name: Siengine Se1000 Evaluation board (DT)
[   26.377647] pstate: 20400009 (nzCv daif +PAN -UAO -TCO BTYPE=--)
[   26.383649] pc : drm_modeset_drop_locks+0x84/0x90
[   26.388351] lr : drm_mode_atomic_ioctl+0x860/0xb8c
[   26.393137] sp : ffff800017b8bb10
[   26.396447] pmr_save: 000000e0
[   26.399497] x29: ffff800017b8bb10 x28: 0000000000000001
[   26.404807] x27: 0000000000000038 x26: 0000000000000002
[   26.410115] x25: ffff000cecbefa00 x24: ffff000cf2f96200
[   26.415423] x23: 0000000000000001 x22: 0000000000000018
[   26.420731] x21: 0000000000000001 x20: ffff800017b8bc10
[   26.426039] x19: 0000000000000000 x18: 0000000000000000
[   26.431347] x17: 0000000002e8bf2c x16: 0000000002e94c6b
[   26.436655] x15: 0000000002ea48b9 x14: ffff8000121f0300
[   26.441963] x13: 0000000002ee2ca8 x12: ffff80001129cae0
[   26.447272] x11: ffff800012435000 x10: ffff000ed46b5e88
[   26.452580] x9 : ffff000c9935e600 x8 : 0000000000000000
[   26.457888] x7 : 000000008020001e x6 : 000000008020001f
[   26.463196] x5 : ffff80001085fbe0 x4 : fffffe0033a59f20
[   26.468504] x3 : 000000008020001e x2 : 0000000000000000
[   26.473813] x1 : 0000000000000000 x0 : ffff000c8f596090
[   26.479122] Call trace:
[   26.481566] drm_modeset_drop_locks+0x84/0x90
[   26.485918] drm_mode_atomic_ioctl+0x860/0xb8c
[   26.490359] drm_ioctl_kernel+0xc4/0x120
[   26.494278] drm_ioctl+0x268/0x534
[   26.497677] __arm64_sys_ioctl+0xa8/0xf0
[   26.501598] el0_svc_common.constprop.0+0x80/0x240
[   26.506384] do_el0_svc+0x24/0x90
[   26.509697] el0_svc+0x20/0x30
[   26.512748] el0_sync_handler+0xe8/0xf0
[   26.516580] el0_sync+0x1a4/0x1c0
[   26.519891] irq event stamp: 0
[   26.522943] hardirqs last  enabled at (0): [<0000000000000000>] 0x0
[   26.529207] hardirqs last disabled at (0): [<ffff800010056d34>] copy_process+0x5d0/0x183c
[   26.537379] softirqs last  enabled at (0): [<ffff800010056d34>] copy_process+0x5d0/0x183c
[   26.545550] softirqs last disabled at (0): [<0000000000000000>] 0x0
[   26.551812] ---[ end trace 20ae984fa860184b ]---

According to the call trace information,it can be located to be
WARN_ON(IS_ERR(c_st)) in the komeda_pipeline_unbound_components function;
Then follow the function.
komeda_pipeline_unbound_components
-> komeda_component_get_state_and_set_user
  -> komeda_pipeline_get_state_and_set_crtc
    -> komeda_pipeline_get_state
      ->drm_atomic_get_private_obj_state
        -> drm_atomic_get_private_obj_state
          -> drm_modeset_lock

komeda_pipeline_unbound_components
-> komeda_component_get_state_and_set_user
  -> komeda_component_get_state
    -> drm_atomic_get_private_obj_state
     -> drm_modeset_lock

ret = drm_modeset_lock(&obj->lock, state->acquire_ctx); if (ret)
	return ERR_PTR(ret);
Here it return -EDEADLK.

deal with the deadlock as suggested by [1], using the
function drm_modeset_backoff().
[1] https://docs.kernel.org/gpu/drm-kms.html?highlight=kms#kms-locking

Therefore, handling this problem can be solved
by adding return -EDEADLK back to the drm_modeset_backoff processing flow
in the drm_mode_atomic_ioctl function.

Signed-off-by: baozhu.liu <lucas.liu@siengine.com>
Signed-off-by: menghui.huang <menghui.huang@siengine.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230804013117.6870-1-menghui.huang@siengine.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:39 +00:00
Harish Kasiviswanathan
de1ce1081b drm/amdkfd: ratelimited SQ interrupt messages
[ Upstream commit 37fb879107 ]

No functional change. Use ratelimited version of pr_ to avoid
overflowing of dmesg buffer

Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:39 +00:00
Sui Jingfeng
bc2808a281 drm/gma500: Fix call trace when psb_gem_mm_init() fails
[ Upstream commit da596080b2 ]

Because the gma_irq_install() is call after psb_gem_mm_init() function,
when psb_gem_mm_init() fails, the interrupt line haven't been allocated.
Yet the gma_irq_uninstall() is called in the psb_driver_unload() function
without checking if checking the irq is registered or not.

The calltrace is appended as following:

[   20.539253] ioremap memtype_reserve failed -16
[   20.543895] gma500 0000:00:02.0: Failure to map stolen base.
[   20.565049] ------------[ cut here ]------------
[   20.565066] Trying to free already-free IRQ 16
[   20.565087] WARNING: CPU: 1 PID: 381 at kernel/irq/manage.c:1893 free_irq+0x209/0x370
[   20.565316] CPU: 1 PID: 381 Comm: systemd-udevd Tainted: G         C         6.5.0-rc1+ #368
[   20.565329] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./IMB-140D Plus, BIOS P1.10 11/18/2013
[   20.565338] RIP: 0010:free_irq+0x209/0x370
[   20.565357] Code: 41 5d 41 5e 41 5f 5d 31 d2 89 d1 89 d6 89 d7 41 89 d1 c3 cc cc cc cc 8b 75 d0 48 c7 c7 e0 77 12 9f 4c 89 4d c8 e8 57 fe f4 ff <0f> 0b 48 8b 75 c8 4c 89 f7 e8 29 f3 f1 00 49 8b 47 40 48 8b 40 78
[   20.565369] RSP: 0018:ffffae3b40733808 EFLAGS: 00010046
[   20.565382] RAX: 0000000000000000 RBX: ffff9f8082bfe000 RCX: 0000000000000000
[   20.565390] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   20.565397] RBP: ffffae3b40733840 R08: 0000000000000000 R09: 0000000000000000
[   20.565405] R10: 0000000000000000 R11: 0000000000000000 R12: ffff9f80871c3100
[   20.565413] R13: ffff9f80835d3360 R14: ffff9f80835d32a4 R15: ffff9f80835d3200
[   20.565424] FS:  00007f13d36458c0(0000) GS:ffff9f8138880000(0000) knlGS:0000000000000000
[   20.565434] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.565441] CR2: 00007f0d046f3f20 CR3: 0000000006c8c000 CR4: 00000000000006e0
[   20.565450] Call Trace:
[   20.565458]  <TASK>
[   20.565470]  ? show_regs+0x72/0x90
[   20.565488]  ? free_irq+0x209/0x370
[   20.565504]  ? __warn+0x8d/0x160
[   20.565520]  ? free_irq+0x209/0x370
[   20.565536]  ? report_bug+0x1bb/0x1d0
[   20.565555]  ? handle_bug+0x46/0x90
[   20.565572]  ? exc_invalid_op+0x19/0x80
[   20.565587]  ? asm_exc_invalid_op+0x1b/0x20
[   20.565607]  ? free_irq+0x209/0x370
[   20.565625]  ? free_irq+0x209/0x370
[   20.565644]  gma_irq_uninstall+0x15b/0x1e0 [gma500_gfx]
[   20.565728]  psb_driver_unload+0x27/0x190 [gma500_gfx]
[   20.565800]  psb_pci_probe+0x5d2/0x790 [gma500_gfx]
[   20.565873]  local_pci_probe+0x48/0xb0
[   20.565892]  pci_device_probe+0xc8/0x280
[   20.565912]  really_probe+0x1d2/0x440
[   20.565929]  __driver_probe_device+0x8a/0x190
[   20.565944]  driver_probe_device+0x23/0xd0
[   20.565957]  __driver_attach+0x10f/0x220
[   20.565971]  ? __pfx___driver_attach+0x10/0x10
[   20.565984]  bus_for_each_dev+0x7a/0xe0
[   20.566002]  driver_attach+0x1e/0x30
[   20.566014]  bus_add_driver+0x127/0x240
[   20.566029]  driver_register+0x64/0x140
[   20.566043]  ? __pfx_psb_init+0x10/0x10 [gma500_gfx]
[   20.566111]  __pci_register_driver+0x68/0x80
[   20.566128]  psb_init+0x2c/0xff0 [gma500_gfx]
[   20.566194]  do_one_initcall+0x46/0x330
[   20.566214]  ? kmalloc_trace+0x2a/0xb0
[   20.566233]  do_init_module+0x6a/0x270
[   20.566250]  load_module+0x207f/0x23a0
[   20.566278]  init_module_from_file+0x9c/0xf0
[   20.566293]  ? init_module_from_file+0x9c/0xf0
[   20.566315]  idempotent_init_module+0x184/0x240
[   20.566335]  __x64_sys_finit_module+0x64/0xd0
[   20.566352]  do_syscall_64+0x59/0x90
[   20.566366]  ? ksys_mmap_pgoff+0x123/0x270
[   20.566378]  ? __secure_computing+0x9b/0x110
[   20.566392]  ? exit_to_user_mode_prepare+0x39/0x190
[   20.566406]  ? syscall_exit_to_user_mode+0x2a/0x50
[   20.566420]  ? do_syscall_64+0x69/0x90
[   20.566433]  ? do_syscall_64+0x69/0x90
[   20.566445]  ? do_syscall_64+0x69/0x90
[   20.566458]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   20.566472] RIP: 0033:0x7f13d351ea3d
[   20.566485] Code: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c3 a3 0f 00 f7 d8 64 89 01 48
[   20.566496] RSP: 002b:00007ffe566c1fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   20.566510] RAX: ffffffffffffffda RBX: 000055e66806eec0 RCX: 00007f13d351ea3d
[   20.566519] RDX: 0000000000000000 RSI: 00007f13d36d9441 RDI: 0000000000000010
[   20.566527] RBP: 0000000000020000 R08: 0000000000000000 R09: 0000000000000002
[   20.566535] R10: 0000000000000010 R11: 0000000000000246 R12: 00007f13d36d9441
[   20.566543] R13: 000055e6681108c0 R14: 000055e66805ba70 R15: 000055e66819a9c0
[   20.566559]  </TASK>
[   20.566566] ---[ end trace 0000000000000000 ]---

Signed-off-by: Sui Jingfeng <suijingfeng@loongson.cn>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230727185855.713318-1-suijingfeng@loongson.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:39 +00:00
Erik Kurzinger
2341c64551 drm/syncobj: fix DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE
[ Upstream commit 101c9f637e ]

If DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT is invoked with the
DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE flag set but no fence has yet been
submitted for the given timeline point the call will fail immediately
with EINVAL. This does not match the intended behavior where the call
should wait until the fence has been submitted (or the timeout expires).

The following small example program illustrates the issue. It should
wait for 5 seconds and then print ETIME, but instead it terminates right
away after printing EINVAL.

  #include <stdio.h>
  #include <fcntl.h>
  #include <time.h>
  #include <errno.h>
  #include <xf86drm.h>
  int main(void)
  {
      int fd = open("/dev/dri/card0", O_RDWR);
      uint32_t syncobj;
      drmSyncobjCreate(fd, 0, &syncobj);
      struct timespec ts;
      clock_gettime(CLOCK_MONOTONIC, &ts);
      uint64_t point = 1;
      if (drmSyncobjTimelineWait(fd, &syncobj, &point, 1,
                                 ts.tv_sec * 1000000000 + ts.tv_nsec + 5000000000, // 5s
                                 DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE, NULL)) {
          printf("drmSyncobjTimelineWait failed %d\n", errno);
      }
  }

Fixes: 01d6c35783 ("drm/syncobj: add support for timeline point wait v8")
Signed-off-by: Erik Kurzinger <ekurzinger@nvidia.com>
Reviewed by: Simon Ser <contact@emersion.fd>
Signed-off-by: Simon Ser <contact@emersion.fr>
Link: https://patchwork.freedesktop.org/patch/msgid/1fac96f1-2f3f-f9f9-4eb0-340f27a8f6c0@nvidia.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:37 +01:00
Maxime Ripard
e733f3e9dc drm/vc4: tests: Fix UAF in the mock helpers
[ Upstream commit cdcd6aef9d ]

The VC4 mock helpers allocate the CRTC, encoders and connectors using a
call to kunit_kzalloc(), but the DRM device they are attache to survives
for longer than the test itself which leads to use-after-frees reported
by KASAN.

Switch to drmm_kzalloc to tie the lifetime of these objects to the main
DRM device.

Fixes: f759f5b53f ("drm/vc4: tests: Introduce a mocking infrastructure")
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Closes: https://lore.kernel.org/all/CA+G9fYvJA2HGqzR9LGgq63v0SKaUejHAE6f7+z9cwWN-ourJ_g@mail.gmail.com/
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231024105640.352752-1-mripard@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:37 +01:00
Alex Deucher
6d8d01d591 drm/amdgpu: don't put MQDs in VRAM on ARM | ARM64
[ Upstream commit ba0fb4b48c ]

Issues were reported with commit 1cfb4d6121
("drm/amdgpu: put MQDs in VRAM") on an ADLINK Ampere
Altra Developer Platform (AVA developer platform).

Various ARM systems seem to have problems related
to PCIe and MMIO access.  In this case, I'm not sure
if this is specific to the ADLINK platform or ARM
in general.  Seems to be some coherency issue with
VRAM.  For now, just don't put MQDs in VRAM on ARM.

Link: https://lists.freedesktop.org/archives/amd-gfx/2023-October/100453.html
Fixes: 1cfb4d6121 ("drm/amdgpu: put MQDs in VRAM")
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: alexey.klimov@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:33 +01:00
Alex Deucher
aad60bce9b drm/amdgpu/gfx10,11: use memcpy_to/fromio for MQDs
[ Upstream commit b3c942bb6c ]

Since they were moved to VRAM, we need to use the IO
variants of memcpy.

Fixes: 1cfb4d6121 ("drm/amdgpu: put MQDs in VRAM")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:33 +01:00
Kunwu.Chan
cc9742165a drm/amd/pm: Fix a memory leak on an error path
[ Upstream commit 828f8e3137 ]

Add missing free on an error path.

Fixes: 511a95552e ("drm/amd/pm: Add SMU 13.0.6 support")
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Kunwu.Chan <chentao@kylinos.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:13 +01:00
AngeloGioacchino Del Regno
8f3ea1ec43 drm: mediatek: mtk_dsi: Fix NO_EOT_PACKET settings/handling
[ Upstream commit 5855d422a6 ]

Due to the initial confusion about MIPI_DSI_MODE_EOT_PACKET, properly
renamed to MIPI_DSI_MODE_NO_EOT_PACKET, reflecting its actual meaning,
both the DSI_TXRX_CON register setting for bit (HSTX_)DIS_EOT and the
later calculation for horizontal sync-active (HSA), back (HBP) and
front (HFP) porches got incorrect due to the logic being inverted.

This means that a number of settings were wrong because....:
 - DSI_TXRX_CON register setting: bit (HSTX_)DIS_EOT should be
   set in order to disable the End of Transmission packet;
 - Horizontal Sync and Back/Front porches: The delta used to
   calculate all of HSA, HBP and HFP should account for the
   additional EOT packet.

Before this change...
 - Bit (HSTX_)DIS_EOT was being set when EOT packet was enabled;
 - For HSA/HBP/HFP delta... all three were wrong, as words were
   added when EOT disabled, instead of when EOT packet enabled!

Invert the logic around flag MIPI_DSI_MODE_NO_EOT_PACKET in the
MediaTek DSI driver to fix the aforementioned issues.

Fixes: 8b2b99fd79 ("drm/mediatek: dsi: Fine tune the line time caused by EOTp")
Fixes: c87d1c4b5b ("drm/mediatek: dsi: Use symbolized register definition")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Tested-by: Michael Walle <mwalle@kernel.org>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20230523104234.7849-1-angelogioacchino.delregno@collabora.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:12 +01:00
Dmitry Baryshkov
0d3ec0a19f drm/msm/dsi: free TX buffer in unbind
[ Upstream commit 5e05be7826 ]

If the drm/msm init code gets an error during output modeset
initialisation, the kernel will report an error regarding DRM memory
manager not being clean during shutdown. This is because
msm_dsi_modeset_init() allocates a piece of GEM memory for the TX
buffer, but destruction of the buffer happens only at
msm_dsi_host_destroy(), which is called during DSI driver's remove()
time, much later than the DRM MM shutdown.

To solve this issue, move the TX buffer destruction to dsi_unbind(), so
that the buffer is destructed at the correct time. Note, we also have to
store a reference to the address space, because priv->kms->aspace is
cleared before components are unbound.

Reported-by: Bjorn Andersson <andersson@kernel.org>
Fixes: 8f59ee9a57 ("drm/msm/dsi: Adjust probe order")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/562238/
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:12 +01:00
Dmitry Baryshkov
b8953fce22 drm/msm/dsi: use msm_gem_kernel_put to free TX buffer
[ Upstream commit 69b321b2c3 ]

Use exiting function to free the allocated GEM object instead of
open-coding it. This has a bonus of internally calling
msm_gem_put_vaddr() to compensate for msm_gem_get_vaddr() in
msm_get_kernel_new().

Fixes: 1e29dff004 ("drm/msm: Add a common function to free kernel buffer objects")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/562239/
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:12 +01:00
Dan Carpenter
40a8d7e492 drm/rockchip: Fix type promotion bug in rockchip_gem_iommu_map()
[ Upstream commit 6471da5ee3 ]

The "ret" variable is declared as ssize_t and it can hold negative error
codes but the "rk_obj->base.size" variable is type size_t.  This means
that when we compare them, they are both type promoted to size_t and the
negative error code becomes a high unsigned value and is treated as
success.  Add a cast to fix this.

Fixes: 38f993b7c5 ("drm/rockchip: Do not use DMA mapping API if attached to IOMMU domain")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/2bfa28b5-145d-4b9e-a18a-98819dd686ce@moroto.mountain
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:12 +01:00
Dmitry Baryshkov
b70dc563b7 drm/bridge: lt9611uxc: fix the race in the error path
[ Upstream commit 15fe53be46 ]

If DSI host attachment fails, the LT9611UXC driver will remove the
bridge without ensuring that there is no outstanding HPD work being
done. In rare cases this can result in the warnings regarding the mutex
being incorrect. Fix this by forcebly freing IRQ and flushing the work.

DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 0 PID: 10 at kernel/locking/mutex.c:582 __mutex_lock+0x468/0x77c
Modules linked in:
CPU: 0 PID: 10 Comm: kworker/0:1 Tainted: G     U             6.6.0-rc5-next-20231011-gd81f81c2b682-dirty #1206
Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)
Workqueue: events lt9611uxc_hpd_work
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __mutex_lock+0x468/0x77c
lr : __mutex_lock+0x468/0x77c
sp : ffff8000800a3c70
x29: ffff8000800a3c70 x28: 0000000000000000 x27: ffffd595fe333000
x26: ffff7c2f0002c005 x25: ffffd595ff1b3000 x24: ffffd595fccda5a0
x23: 0000000000000000 x22: 0000000000000002 x21: ffff7c2f056d91c8
x20: 0000000000000000 x19: ffff7c2f056d91c8 x18: fffffffffffe8db0
x17: 000000040044ffff x16: 005000f2b5503510 x15: 0000000000000000
x14: 000000000006efb8 x13: 0000000000000000 x12: 0000000000000037
x11: 0000000000000001 x10: 0000000000001470 x9 : ffff8000800a3ae0
x8 : ffff7c2f0027f8d0 x7 : ffff7c2f0027e400 x6 : ffffd595fc702b54
x5 : 0000000000000000 x4 : ffff8000800a0000 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff7c2f0027e400
Call trace:
 __mutex_lock+0x468/0x77c
 mutex_lock_nested+0x24/0x30
 drm_bridge_hpd_notify+0x2c/0x5c
 lt9611uxc_hpd_work+0x6c/0x80
 process_one_work+0x1ec/0x51c
 worker_thread+0x1ec/0x3e4
 kthread+0x120/0x124
 ret_from_fork+0x10/0x20
irq event stamp: 15799
hardirqs last  enabled at (15799): [<ffffd595fc702ba4>] finish_task_switch.isra.0+0xa8/0x278
hardirqs last disabled at (15798): [<ffffd595fd5a1580>] __schedule+0x7b8/0xbd8
softirqs last  enabled at (15794): [<ffffd595fc690698>] __do_softirq+0x498/0x4e0
softirqs last disabled at (15771): [<ffffd595fc69615c>] ____do_softirq+0x10/0x1c

Fixes: bc6fa8676e ("drm/bridge/lontium-lt9611uxc: move HPD notification out of IRQ handler")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231011220002.382422-1-dmitry.baryshkov@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:12 +01:00
Johnny Liu
6ff8453206 gpu: host1x: Correct allocated size for contexts
[ Upstream commit e889a311f7 ]

Original implementation over allocates the memory size for the
contexts list. The size of memory for the contexts list is based
on the number of iommu groups specified in the device tree.

Fixes: 8aa5bcb616 ("gpu: host1x: Add context device management code")
Signed-off-by: Johnny Liu <johnliu@nvidia.com>
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230901115910.701518-1-cyndis@kapsi.fi
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:12 +01:00
Christophe JAILLET
212203ef4f drm/rockchip: cdn-dp: Fix some error handling paths in cdn_dp_probe()
[ Upstream commit 44b968d0d0 ]

cdn_dp_audio_codec_init() can fail. So add some error handling.

If component_add() fails, the previous cdn_dp_audio_codec_init() call
should be undone, as already done in the remove function.

Fixes: 88582f5646 ("drm/rockchip: cdn-dp: Don't unregister audio dev when unbinding")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/8494a41602fadb7439630921a9779640698f2f9f.1693676045.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:12 +01:00
Konrad Dybcio
2d70a9002e drm/msm/a6xx: Fix unknown speedbin case
[ Upstream commit 75cb60d4f5 ]

When opp-supported-hw is present under an OPP node, but no form of
opp_set_supported_hw() has been called, that OPP is ignored by the API
and marked as unsupported.

Before Commit c928a05e44 ("drm/msm/adreno: Move speedbin mapping to
device table"), an unknown speedbin would result in marking all OPPs
as available, but it's better to avoid potentially overclocking the
silicon - the GMU will simply refuse to power up the chip.

Currently, the Adreno speedbin code does just that (AND returns an
invalid error, (int)UINT_MAX). Fix that by defaulting to speedbin 0
(which is conveniently always bound to fuseval == 0).

Fixes: c928a05e44 ("drm/msm/adreno: Move speedbin mapping to device table")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/559604/
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:11 +01:00
Konrad Dybcio
d41828438c drm/msm/adreno: Fix SM6375 GPU ID
[ Upstream commit beb3542320 ]

SM6375 comes with a patchlevel=1. Fix the chipid up to reflect that.

Fixes: 90b593ce1c ("drm/msm/adreno: Switch to chip-id for identifying GPU")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/554527/
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:11 +01:00
Jason-JH.Lin
12d322fc6e drm/mediatek: Fix iommu fault during crtc enabling
[ Upstream commit 53412dc290 ]

The difference between drm_atomic_helper_commit_tail() and
drm_atomic_helper_commit_tail_rpm() is
drm_atomic_helper_commit_tail() will commit plane first and
then enable crtc, drm_atomic_helper_commit_tail_rpm() will
enable crtc first and then commit plane.

Before mediatek-drm enables crtc, the power and clk required
by OVL have not been turned on, so the commit plane cannot be
committed before crtc is enabled. That means OVL layer should
not be enabled before crtc is enabled.
Therefore, the atomic_commit_tail of mediatek-drm is hooked with
drm_atomic_helper_commit_tail_rpm().

Another reason is that the plane_state of drm_atomic_state is not
synchronized with the plane_state stored in mtk_crtc during crtc enablng,
so just set all planes to disabled.

Fixes: 119f517362 ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230809125722.24112-3-jason-jh.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:11 +01:00
Jason-JH.Lin
0776389bd8 drm/mediatek: Fix iommu fault by swapping FBs after updating plane state
[ Upstream commit 3ec71e05ae ]

According to the comment in drm_atomic_helper_async_commit(),
we should make sure FBs have been swapped, so that cleanups in the
new_state performs a cleanup in the old FB.

So we should move swapping FBs after calling mtk_plane_update_new_state(),
to avoid using the old FB which could be freed.

Fixes: 1a64a7aff8 ("drm/mediatek: Fix cursor plane no update")
Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230809125722.24112-2-jason-jh.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:11 +01:00