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SubjectRe: [PATCH V2] ath10k: don't fail if IRAM write fails
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Hello, I have the same problem with my QCA9984 cards and also tested the
patch successfully.

See > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939937

best regards



Am 12.08.21 um 22:21 schrieb Axel Rasmussen:
> Sorry again for the slow response time.
>
> I got around to testing this today on my hardware. I tested with a
> vanilla 5.13.8 kernel, and then the same kernel with this patch
> applied. Long story short, the patch does indeed seem to at least work
> around the issue I was seeing in [1]. With this patch applied, I still
> get the same "failed to copy target iram contents" error, but the
> interface comes up and seems to be functional regardless.
>
> So, for what it's worth (granted I am no wireless expert!), you can take:
>
> Tested-by: Axel Rasmussen <axelrasmussen@google.com>
>
> (This issue has nothing to do with my full time job, but I'm meant to
> use my @google.com address for any open source contributions, which I
> believe applies to commit messages too.)
>
> [1]: https://lists.infradead.org/pipermail/ath10k/2021-May/012626.html
>
>
>
> Here are the two dmesg outputs, for comparison:
>
> # uname -a
> Linux router 5.13.8 #1 SMP Wed Aug 11 20:18:51 PDT 2021 x86_64 AMD
> GX-412TC SOC AuthenticAMD GNU/Linux
> # dmesg | grep ath
> [ 12.491747] ath10k_pci 0000:04:00.0: pci irq msi oper_irq_mode 2
> irq_mode 0 reset_mode 0
> [ 12.613341] ath10k_pci 0000:04:00.0: qca9984/qca9994 hw1.0 target
> 0x01000000 chip_id 0x00000000 sub 168c:cafe
> [ 12.613367] ath10k_pci 0000:04:00.0: kconfig debug 1 debugfs 1
> tracing 1 dfs 1 testmode 0
> [ 12.615071] ath10k_pci 0000:04:00.0: firmware ver
> 10.4-3.9.0.2-00131 api 5 features
> no-p2p,mfp,peer-flow-ctrl,btcoex-param,allows-mesh-bcast,no-ps,peer-fixed-rate,iram-recovery
> crc32 23bd9e43
> [ 13.846538] ath10k_pci 0000:04:00.0: board_file api 2 bmi_id 0:31
> crc32 85498734
> [ 16.428502] ath10k_pci 0000:04:00.0: failed to copy target iram contents: -12
> [ 16.518692] ath10k_pci 0000:04:00.0: could not init core (-12)
> [ 16.518950] ath10k_pci 0000:04:00.0: could not probe fw (-12)
>
>
>
> # uname -a
> Linux router 5.13.8+ #2 SMP Wed Aug 11 20:28:56 PDT 2021 x86_64 AMD
> GX-412TC SOC AuthenticAMD GNU/Linux
> # dmesg | grep ath
> [ 12.201239] ath10k_pci 0000:04:00.0: pci irq msi oper_irq_mode 2
> irq_mode 0 reset_mode 0
> [ 12.323354] ath10k_pci 0000:04:00.0: qca9984/qca9994 hw1.0 target
> 0x01000000 chip_id 0x00000000 sub 168c:cafe
> [ 12.323407] ath10k_pci 0000:04:00.0: kconfig debug 1 debugfs 1
> tracing 1 dfs 1 testmode 0
> [ 12.325162] ath10k_pci 0000:04:00.0: firmware ver
> 10.4-3.9.0.2-00131 api 5 features
> no-p2p,mfp,peer-flow-ctrl,btcoex-param,allows-mesh-bcast,no-ps,peer-fixed-rate,iram-reco
> very crc32 23bd9e43
> [ 13.556748] ath10k_pci 0000:04:00.0: board_file api 2 bmi_id 0:31
> crc32 85498734
> [ 16.155848] ath10k_pci 0000:04:00.0: No hardware memory
> [ 16.155873] ath10k_pci 0000:04:00.0: failed to copy target iram contents: -12
> [ 16.267376] ath10k_pci 0000:04:00.0: htt-ver 2.2 wmi-op 6 htt-op 4
> cal otp max-sta 512 raw 0 hwcrypto 1
> [ 16.382257] ath: EEPROM regdomain sanitized
> [ 16.382289] ath: EEPROM regdomain: 0x64
> [ 16.382306] ath: EEPROM indicates we should expect a direct regpair map
> [ 16.382312] ath: Country alpha2 being used: 00
> [ 16.382316] ath: Regpair used: 0x64
> [ 16.393599] ath10k_pci 0000:04:00.0 wlp4s0: renamed from wlan0
> [ 41.264025] ath10k_pci 0000:04:00.0: No hardware memory
> [ 41.264045] ath10k_pci 0000:04:00.0: failed to copy target iram contents: -12
> [ 41.480677] ath10k_pci 0000:04:00.0: Unknown eventid: 36933
>
> On Sun, Aug 1, 2021 at 7:23 PM Axel Rasmussen <axel.rasmussen1@gmail.com> wrote:
>> On Thu, Jul 22, 2021 at 12:42 PM ojab // <ojab@ojab.ru> wrote:
>>> See also: https://lists.infradead.org/pipermail/ath10k/2021-May/012626.html
>>>
>>> On Thu, 22 Jul 2021 at 22:36, ojab <ojab@ojab.ru> wrote:
>>>> After reboot with kernel & firmware updates I found `failed to copy
>>>> target iram contents:` in dmesg and missing wlan interfaces for both
>>>> of my QCA9984 compex cards. Rolling back kernel/firmware didn't fixed
>>>> it, so while I have no idea what's actually happening, I don't see why
>>>> we should fail in this case, looks like some optional firmware ability
>>>> that could be skipped.
>>>>
>>>> Also with additional logging there is
>>>> ```
>>>> [ 6.839858] ath10k_pci 0000:04:00.0: No hardware memory
>>>> [ 6.841205] ath10k_pci 0000:04:00.0: failed to copy target iram contents: -12
>>>> [ 6.873578] ath10k_pci 0000:07:00.0: No hardware memory
>>>> [ 6.875052] ath10k_pci 0000:07:00.0: failed to copy target iram contents: -12
>>>> ```
>>>> so exact branch could be seen.
>>>>
>>>> Signed-off-by: Slava Kardakov <ojab@ojab.ru>
>>>> ---
>>>> Of course I forgot to sing off, since I don't use it by default because I
>>>> hate my real name and kernel requires it
>> Thanks for working on this! And sorry for the slow response. I've been
>> unexpectedly very busy lately, but I plan to test out this patch next
>> week.
>>
>>>> drivers/net/wireless/ath/ath10k/core.c | 9 ++++++---
>>>> 1 file changed, 6 insertions(+), 3 deletions(-)
>>>>
>>>> diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
>>>> index 2f9be182fbfb..d9fd5294e142 100644
>>>> --- a/drivers/net/wireless/ath/ath10k/core.c
>>>> +++ b/drivers/net/wireless/ath/ath10k/core.c
>>>> @@ -2691,8 +2691,10 @@ static int ath10k_core_copy_target_iram(struct ath10k *ar)
>>>> u32 len, remaining_len;
>>>>
>>>> hw_mem = ath10k_coredump_get_mem_layout(ar);
>>>> - if (!hw_mem)
>>>> + if (!hw_mem) {
>>>> + ath10k_warn(ar, "No hardware memory");
>>>> return -ENOMEM;
>>>> + }
>>>>
>>>> for (i = 0; i < hw_mem->region_table.size; i++) {
>>>> tmp = &hw_mem->region_table.regions[i];
>>>> @@ -2702,8 +2704,10 @@ static int ath10k_core_copy_target_iram(struct ath10k *ar)
>>>> }
>>>> }
>>>>
>>>> - if (!mem_region)
>>>> + if (!mem_region) {
>>>> + ath10k_warn(ar, "No memory region");
>>>> return -ENOMEM;
>>>> + }
>>>>
>>>> for (i = 0; i < ar->wmi.num_mem_chunks; i++) {
>>>> if (ar->wmi.mem_chunks[i].req_id ==
>>>> @@ -2917,7 +2921,6 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode,
>>>> if (status) {
>>>> ath10k_warn(ar, "failed to copy target iram contents: %d",
>>>> status);
>>>> - goto err_hif_stop;
>>>> }
>>>> }
>>>>
>>>> --
>>>> 2.32.0
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