diff options
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) { |