[PATCH] wifi: ath11k: fix remapped ce accessing issue on 64bit OS
From: Ziyang Huang
Date: Wed May 01 2024 - 12:15:07 EST
On 64bit OS, when ab->mem_ce is lower than or 4G far away from ab->mem,
u32 is not enough to store the offsets, which makes ath11k_ahb_read32()
and ath11k_ahb_write32() access incorrect address and causes Data Abort
Exception.
Let's use the high bits of offsets to decide where to access, which is
similar as ath11k_pci_get_window_start() done. In the future, we can merge
these functions for unified regs accessing.
Signed-off-by: Ziyang Huang <hzyitc@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath11k/ahb.c | 34 ++++++++++++++++++++-------
drivers/net/wireless/ath/ath11k/hal.c | 17 +++++---------
drivers/net/wireless/ath/ath11k/hw.c | 14 +++++------
drivers/net/wireless/ath/ath11k/hw.h | 7 +++++-
4 files changed, 45 insertions(+), 27 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/ahb.c b/drivers/net/wireless/ath/ath11k/ahb.c
index 7c0a23517949..9e59b4de93a9 100644
--- a/drivers/net/wireless/ath/ath11k/ahb.c
+++ b/drivers/net/wireless/ath/ath11k/ahb.c
@@ -198,12 +198,30 @@ static const struct ath11k_pci_ops ath11k_ahb_pci_ops_wcn6750 = {
static inline u32 ath11k_ahb_read32(struct ath11k_base *ab, u32 offset)
{
- return ioread32(ab->mem + offset);
+ switch (offset & ATH11K_REG_TYPE_MASK) {
+ case ATH11K_REG_TYPE_NORMAL:
+ return ioread32(ab->mem + FIELD_GET(ATH11K_REG_OFFSET_MASK, offset));
+ case ATH11K_REG_TYPE_CE:
+ return ioread32(ab->mem_ce + FIELD_GET(ATH11K_REG_OFFSET_MASK, offset));
+ default:
+ BUG();
+ return 0;
+ }
}
static inline void ath11k_ahb_write32(struct ath11k_base *ab, u32 offset, u32 value)
{
- iowrite32(value, ab->mem + offset);
+ switch (offset & ATH11K_REG_TYPE_MASK) {
+ case ATH11K_REG_TYPE_NORMAL:
+ iowrite32(value, ab->mem + FIELD_GET(ATH11K_REG_OFFSET_MASK, offset));
+ break;
+ case ATH11K_REG_TYPE_CE:
+ iowrite32(value, ab->mem_ce + FIELD_GET(ATH11K_REG_OFFSET_MASK, offset));
+ break;
+ default:
+ BUG();
+ break;
+ }
}
static void ath11k_ahb_kill_tasklets(struct ath11k_base *ab)
@@ -275,9 +293,9 @@ static void ath11k_ahb_ce_irq_enable(struct ath11k_base *ab, u16 ce_id)
const struct ce_ie_addr *ce_ie_addr = ab->hw_params.ce_ie_addr;
u32 ie1_reg_addr, ie2_reg_addr, ie3_reg_addr;
- ie1_reg_addr = ce_ie_addr->ie1_reg_addr + ATH11K_CE_OFFSET(ab);
- ie2_reg_addr = ce_ie_addr->ie2_reg_addr + ATH11K_CE_OFFSET(ab);
- ie3_reg_addr = ce_ie_addr->ie3_reg_addr + ATH11K_CE_OFFSET(ab);
+ ie1_reg_addr = ce_ie_addr->ie1_reg_addr;
+ ie2_reg_addr = ce_ie_addr->ie2_reg_addr;
+ ie3_reg_addr = ce_ie_addr->ie3_reg_addr;
ce_attr = &ab->hw_params.host_ce_config[ce_id];
if (ce_attr->src_nentries)
@@ -296,9 +314,9 @@ static void ath11k_ahb_ce_irq_disable(struct ath11k_base *ab, u16 ce_id)
const struct ce_ie_addr *ce_ie_addr = ab->hw_params.ce_ie_addr;
u32 ie1_reg_addr, ie2_reg_addr, ie3_reg_addr;
- ie1_reg_addr = ce_ie_addr->ie1_reg_addr + ATH11K_CE_OFFSET(ab);
- ie2_reg_addr = ce_ie_addr->ie2_reg_addr + ATH11K_CE_OFFSET(ab);
- ie3_reg_addr = ce_ie_addr->ie3_reg_addr + ATH11K_CE_OFFSET(ab);
+ ie1_reg_addr = ce_ie_addr->ie1_reg_addr;
+ ie2_reg_addr = ce_ie_addr->ie2_reg_addr;
+ ie3_reg_addr = ce_ie_addr->ie3_reg_addr;
ce_attr = &ab->hw_params.host_ce_config[ce_id];
if (ce_attr->src_nentries)
diff --git a/drivers/net/wireless/ath/ath11k/hal.c b/drivers/net/wireless/ath/ath11k/hal.c
index f3d04568c221..f9ba2f821108 100644
--- a/drivers/net/wireless/ath/ath11k/hal.c
+++ b/drivers/net/wireless/ath/ath11k/hal.c
@@ -1233,20 +1233,16 @@ static int ath11k_hal_srng_create_config(struct ath11k_base *ab)
s->reg_start[1] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_STATUS_RING_HP;
s = &hal->srng_config[HAL_CE_SRC];
- s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab) + HAL_CE_DST_RING_BASE_LSB +
- ATH11K_CE_OFFSET(ab);
- s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab) + HAL_CE_DST_RING_HP +
- ATH11K_CE_OFFSET(ab);
+ s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab) + HAL_CE_DST_RING_BASE_LSB;
+ s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab) + HAL_CE_DST_RING_HP;
s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_SRC_REG(ab) -
HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab);
s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_SRC_REG(ab) -
HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab);
s = &hal->srng_config[HAL_CE_DST];
- s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_RING_BASE_LSB +
- ATH11K_CE_OFFSET(ab);
- s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_RING_HP +
- ATH11K_CE_OFFSET(ab);
+ s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_RING_BASE_LSB;
+ s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_RING_HP;
s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
@@ -1254,9 +1250,8 @@ static int ath11k_hal_srng_create_config(struct ath11k_base *ab)
s = &hal->srng_config[HAL_CE_DST_STATUS];
s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) +
- HAL_CE_DST_STATUS_RING_BASE_LSB + ATH11K_CE_OFFSET(ab);
- s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_STATUS_RING_HP +
- ATH11K_CE_OFFSET(ab);
+ HAL_CE_DST_STATUS_RING_BASE_LSB;
+ s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_STATUS_RING_HP;
s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
diff --git a/drivers/net/wireless/ath/ath11k/hw.c b/drivers/net/wireless/ath/ath11k/hw.c
index caa6dc12a790..58f39a7eaa1c 100644
--- a/drivers/net/wireless/ath/ath11k/hw.c
+++ b/drivers/net/wireless/ath/ath11k/hw.c
@@ -2268,9 +2268,9 @@ const struct ce_ie_addr ath11k_ce_ie_addr_ipq8074 = {
};
const struct ce_ie_addr ath11k_ce_ie_addr_ipq5018 = {
- .ie1_reg_addr = CE_HOST_IPQ5018_IE_ADDRESS - HAL_IPQ5018_CE_WFSS_REG_BASE,
- .ie2_reg_addr = CE_HOST_IPQ5018_IE_2_ADDRESS - HAL_IPQ5018_CE_WFSS_REG_BASE,
- .ie3_reg_addr = CE_HOST_IPQ5018_IE_3_ADDRESS - HAL_IPQ5018_CE_WFSS_REG_BASE,
+ .ie1_reg_addr = ATH11K_REG_TYPE_CE + CE_HOST_IPQ5018_IE_ADDRESS - HAL_IPQ5018_CE_WFSS_REG_BASE,
+ .ie2_reg_addr = ATH11K_REG_TYPE_CE + CE_HOST_IPQ5018_IE_2_ADDRESS - HAL_IPQ5018_CE_WFSS_REG_BASE,
+ .ie3_reg_addr = ATH11K_REG_TYPE_CE + CE_HOST_IPQ5018_IE_3_ADDRESS - HAL_IPQ5018_CE_WFSS_REG_BASE,
};
const struct ce_remap ath11k_ce_remap_ipq5018 = {
@@ -2801,13 +2801,13 @@ const struct ath11k_hw_regs ipq5018_regs = {
.hal_reo_status_hp = 0x00003070,
/* WCSS relative address */
- .hal_seq_wcss_umac_ce0_src_reg = 0x08400000
+ .hal_seq_wcss_umac_ce0_src_reg = ATH11K_REG_TYPE_CE + 0x08400000
- HAL_IPQ5018_CE_WFSS_REG_BASE,
- .hal_seq_wcss_umac_ce0_dst_reg = 0x08401000
+ .hal_seq_wcss_umac_ce0_dst_reg = ATH11K_REG_TYPE_CE + 0x08401000
- HAL_IPQ5018_CE_WFSS_REG_BASE,
- .hal_seq_wcss_umac_ce1_src_reg = 0x08402000
+ .hal_seq_wcss_umac_ce1_src_reg = ATH11K_REG_TYPE_CE + 0x08402000
- HAL_IPQ5018_CE_WFSS_REG_BASE,
- .hal_seq_wcss_umac_ce1_dst_reg = 0x08403000
+ .hal_seq_wcss_umac_ce1_dst_reg = ATH11K_REG_TYPE_CE + 0x08403000
- HAL_IPQ5018_CE_WFSS_REG_BASE,
/* WBM Idle address */
diff --git a/drivers/net/wireless/ath/ath11k/hw.h b/drivers/net/wireless/ath/ath11k/hw.h
index 14ef4eb48f80..44593b38fc85 100644
--- a/drivers/net/wireless/ath/ath11k/hw.h
+++ b/drivers/net/wireless/ath/ath11k/hw.h
@@ -81,7 +81,12 @@
#define ATH11K_M3_FILE "m3.bin"
#define ATH11K_REGDB_FILE_NAME "regdb.bin"
-#define ATH11K_CE_OFFSET(ab) (ab->mem_ce - ab->mem)
+#define ATH11K_REG_TYPE_MASK GENMASK(31, 28)
+#define ATH11K_REG_TYPE(x) FIELD_PREP_CONST(ATH11K_REG_TYPE_MASK, x)
+#define ATH11K_REG_TYPE_NORMAL ATH11K_REG_TYPE(0)
+#define ATH11K_REG_TYPE_DP ATH11K_REG_TYPE(1)
+#define ATH11K_REG_TYPE_CE ATH11K_REG_TYPE(2)
+#define ATH11K_REG_OFFSET_MASK GENMASK(27, 0)
enum ath11k_hw_rate_cck {
ATH11K_HW_RATE_CCK_LP_11M = 0,
--
2.40.1