samsung-sm8650/android_kernel_samsung_sm8650-modules
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qcacmn: Check target ready before accessing registers on qca6750

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Before accessing any register on chip 6750, check if target is
ready or not.

Do not allow register access if target is not ready.

Change-Id: I41a604d04e861c97bdd676998222ccecbf12fd5a
CRs-Fixed: 2688920
This commit is contained in:
Alok Kumar
2020-04-21 14:23:21 +05:30
committed by snandini
parent 9d14f9d71a
commit b00f74430d
4 changed files with 63 additions and 2 deletions
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18
hal/wifi3.0/hal_api.h
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@@ -269,6 +269,12 @@ static inline void hal_write32_mb(struct hal_soc *hal_soc, uint32_t offset,
unsigned long flags;
qdf_iomem_t new_addr;
if (!TARGET_ACCESS_ALLOWED(HIF_GET_SOFTC(
hal_soc->hif_handle))) {
hal_err_rl("%s: target access is not allowed", __func__);
return;
}
/* Region < BAR + 4K can be directly accessed */
if (offset < MAPPED_REF_OFF) {
qdf_iowrite32(hal_soc->dev_base_addr + offset, value);
@@ -323,6 +329,12 @@ static inline void hal_write32_mb_confirm(struct hal_soc *hal_soc,
unsigned long flags;
qdf_iomem_t new_addr;
if (!TARGET_ACCESS_ALLOWED(HIF_GET_SOFTC(
hal_soc->hif_handle))) {
hal_err_rl("%s: target access is not allowed", __func__);
return;
}
/* Region < BAR + 4K can be directly accessed */
if (offset < MAPPED_REF_OFF) {
qdf_iowrite32(hal_soc->dev_base_addr + offset, value);
@@ -477,6 +489,12 @@ uint32_t hal_read32_mb(struct hal_soc *hal_soc, uint32_t offset)
unsigned long flags;
qdf_iomem_t new_addr;
if (!TARGET_ACCESS_ALLOWED(HIF_GET_SOFTC(
hal_soc->hif_handle))) {
hal_err_rl("%s: target access is not allowed", __func__);
return 0;
}
/* Region < BAR + 4K can be directly accessed */
if (offset < MAPPED_REF_OFF)
return qdf_ioread32(hal_soc->dev_base_addr + offset);