diff options
| author | Baochen Qiang <quic_bqiang@quicinc.com> | 2022-09-07 11:31:13 +0300 |
|---|---|---|
| committer | Kalle Valo <quic_kvalo@quicinc.com> | 2022-09-10 09:26:18 +0300 |
| commit | 876eb84882a8b2fc4036e735a2de52141aebb6a5 (patch) | |
| tree | 5a571512c879574d7f0f3844ca754455f9398d6d /drivers/net/wireless/ath/ath11k/pcic.c | |
| parent | 90aad48eb56f9191e2b30e27f74e2ac97ad93012 (diff) | |
wifi: ath11k: implement SRAM dump debugfs interface
On-board SRAM contains valuable information for firmware debugging so
add a new file named "sram" to debugfs with which we can dump SRAM
content using following the following:
cp /sys/kernel/debug/ath11k/wcn6855\ hw2.0/sram /tmp/sram
Currently this feature is enabled for QCA6390 and WCN6855.
Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01720.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1
Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220802075533.1744-3-quic_bqiang@quicinc.com
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/pcic.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/pcic.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath11k/pcic.c b/drivers/net/wireless/ath/ath11k/pcic.c index 4d0c039e7ea4..926b0cb7b061 100644 --- a/drivers/net/wireless/ath/ath11k/pcic.c +++ b/drivers/net/wireless/ath/ath11k/pcic.c @@ -203,6 +203,37 @@ u32 ath11k_pcic_read32(struct ath11k_base *ab, u32 offset) } EXPORT_SYMBOL(ath11k_pcic_read32); +int ath11k_pcic_read(struct ath11k_base *ab, void *buf, u32 start, u32 end) +{ + int ret = 0; + bool wakeup_required; + u32 *data = buf; + u32 i; + + /* for offset beyond BAR + 4K - 32, may + * need to wakeup the device to access. + */ + wakeup_required = test_bit(ATH11K_FLAG_DEVICE_INIT_DONE, &ab->dev_flags) && + end >= ATH11K_PCI_ACCESS_ALWAYS_OFF; + if (wakeup_required && ab->pci.ops->wakeup) { + ret = ab->pci.ops->wakeup(ab); + if (ret) { + ath11k_warn(ab, "failed to wakeup for read from 0x%x: %d\n", + start, ret); + return ret; + } + } + + for (i = start; i < end + 1; i += 4) + *data++ = __ath11k_pcic_read32(ab, i); + + if (wakeup_required && ab->pci.ops->release) + ab->pci.ops->release(ab); + + return 0; +} +EXPORT_SYMBOL(ath11k_pcic_read); + void ath11k_pcic_get_msi_address(struct ath11k_base *ab, u32 *msi_addr_lo, u32 *msi_addr_hi) { |