IPQ5332 firmware supports only fixed QMI firmware memory.
Hence, add support to read reserved fixed memory region from
device-tree and provide the reserved memory segments for
firmware to use during QMI firmware memory request.
Note that the ability to set the fixed memory will be introduced in
a subsequent patch. Currently, the flag remains unset by default,
ensuring that existing chipsets are unaffected.
Tested-on: IPQ5332 hw1.0 AHB WLAN.WBE.1.3.1-00130-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00210-QCAHKSWPL_SILICONZ-1
Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath12k/core.c | 25 ++++
drivers/net/wireless/ath/ath12k/core.h | 4 +
drivers/net/wireless/ath/ath12k/hw.c | 4 +
drivers/net/wireless/ath/ath12k/hw.h | 1 +
drivers/net/wireless/ath/ath12k/qmi.c | 180 ++++++++++++++++++++++---
5 files changed, 198 insertions(+), 16 deletions(-)
diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index 0b2dec081c6e..5bd852f9572b 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -612,6 +612,31 @@ u32 ath12k_core_get_max_num_tids(struct ath12k_base *ab)
return TARGET_NUM_TIDS(SINGLE);
}
+struct reserved_mem *ath12k_core_get_reserved_mem(struct ath12k_base *ab,
+ int index)
+{
+ struct device *dev = ab->dev;
+ struct reserved_mem *rmem;
+ struct device_node *node;
+
+ node = of_parse_phandle(dev->of_node, "memory-region", index);
+ if (!node) {
+ ath12k_dbg(ab, ATH12K_DBG_BOOT,
+ "failed to parse memory-region for index %d\n", index);
+ return NULL;
+ }
+
+ rmem = of_reserved_mem_lookup(node);
+ of_node_put(node);
+ if (!rmem) {
+ ath12k_dbg(ab, ATH12K_DBG_BOOT,
+ "unable to get memory-region for index %d\n", index);
+ return NULL;
+ }
+
+ return rmem;
+}
+
static void ath12k_core_stop(struct ath12k_base *ab)
{
ath12k_core_stopped(ab);
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 85f0cdce774e..398f76a9d2e4 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -14,6 +14,7 @@
#include <linux/dmi.h>
#include <linux/ctype.h>
#include <linux/firmware.h>
+#include <linux/of_reserved_mem.h>
#include <linux/panic_notifier.h>
#include <linux/average.h>
#include "qmi.h"
@@ -239,6 +240,7 @@ enum ath12k_dev_flags {
ATH12K_FLAG_EXT_IRQ_ENABLED,
ATH12K_FLAG_QMI_FW_READY_COMPLETE,
ATH12K_FLAG_FTM_SEGMENTED,
+ ATH12K_FLAG_FIXED_MEM_REGION,
};
struct ath12k_tx_conf {
@@ -1220,6 +1222,8 @@ u32 ath12k_core_get_max_peers_per_radio(struct ath12k_base *ab);
u32 ath12k_core_get_max_num_tids(struct ath12k_base *ab);
void ath12k_core_hw_group_set_mlo_capable(struct ath12k_hw_group *ag);
+struct reserved_mem *ath12k_core_get_reserved_mem(struct ath12k_base *ab,
+ int index);
static inline const char *ath12k_scan_state_str(enum ath12k_scan_state state)
{
diff --git a/drivers/net/wireless/ath/ath12k/hw.c b/drivers/net/wireless/ath/ath12k/hw.c
index 91aecca566a4..b4d5651973b7 100644
--- a/drivers/net/wireless/ath/ath12k/hw.c
+++ b/drivers/net/wireless/ath/ath12k/hw.c
@@ -1322,6 +1322,7 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
.ce_ie_addr = NULL,
.ce_remap = NULL,
+ .bdf_addr_offset = 0,
},
{
.name = "wcn7850 hw2.0",
@@ -1406,6 +1407,7 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
.ce_ie_addr = NULL,
.ce_remap = NULL,
+ .bdf_addr_offset = 0,
},
{
.name = "qcn9274 hw2.0",
@@ -1486,6 +1488,7 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
.ce_ie_addr = NULL,
.ce_remap = NULL,
+ .bdf_addr_offset = 0,
},
{
.name = "ipq5332 hw1.0",
@@ -1561,6 +1564,7 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
.ce_ie_addr = &ath12k_ce_ie_addr_ipq5332,
.ce_remap = &ath12k_ce_remap_ipq5332,
+ .bdf_addr_offset = 0xC00000,
},
};
diff --git a/drivers/net/wireless/ath/ath12k/hw.h b/drivers/net/wireless/ath/ath12k/hw.h
index 6a75af093f31..5123d2f51865 100644
--- a/drivers/net/wireless/ath/ath12k/hw.h
+++ b/drivers/net/wireless/ath/ath12k/hw.h
@@ -229,6 +229,7 @@ struct ath12k_hw_params {
const struct ce_ie_addr *ce_ie_addr;
const struct ce_remap *ce_remap;
+ u32 bdf_addr_offset;
};
struct ath12k_hw_ops {
diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c
index 6978200fb79a..dc9626087ceb 100644
--- a/drivers/net/wireless/ath/ath12k/qmi.c
+++ b/drivers/net/wireless/ath/ath12k/qmi.c
@@ -11,6 +11,8 @@
#include "debug.h"
#include <linux/of.h>
#include <linux/firmware.h>
+#include <linux/of_address.h>
+#include <linux/ioport.h>
#define SLEEP_CLOCK_SELECT_INTERNAL_BIT 0x02
#define HOST_CSTATE_BIT 0x04
@@ -2378,7 +2380,8 @@ int ath12k_qmi_respond_fw_mem_request(struct ath12k_base *ab)
* failure to firmware and firmware then request multiple blocks of
* small chunk size memory.
*/
- if (ab->qmi.target_mem_delayed) {
+ if (!test_bit(ATH12K_FLAG_FIXED_MEM_REGION, &ab->dev_flags) &&
+ ab->qmi.target_mem_delayed) {
delayed = true;
ath12k_dbg(ab, ATH12K_DBG_QMI, "qmi delays mem_request %d\n",
ab->qmi.mem_seg_count);
@@ -2442,6 +2445,7 @@ static void ath12k_qmi_free_mlo_mem_chunk(struct ath12k_base *ab,
{
struct ath12k_hw_group *ag = ab->ag;
struct target_mem_chunk *mlo_chunk;
+ bool fixed_mem;
lockdep_assert_held(&ag->mutex);
@@ -2453,8 +2457,13 @@ static void ath12k_qmi_free_mlo_mem_chunk(struct ath12k_base *ab,
return;
}
+ fixed_mem = test_bit(ATH12K_FLAG_FIXED_MEM_REGION, &ab->dev_flags);
mlo_chunk = &ag->mlo_mem.chunk[idx];
- if (mlo_chunk->v.addr) {
+
+ if (fixed_mem && mlo_chunk->v.ioaddr) {
+ iounmap(mlo_chunk->v.ioaddr);
+ mlo_chunk->v.ioaddr = NULL;
+ } else if (mlo_chunk->v.addr) {
dma_free_coherent(ab->dev,
mlo_chunk->size,
mlo_chunk->v.addr,
@@ -2464,7 +2473,10 @@ static void ath12k_qmi_free_mlo_mem_chunk(struct ath12k_base *ab,
mlo_chunk->paddr = 0;
mlo_chunk->size = 0;
- chunk->v.addr = NULL;
+ if (fixed_mem)
+ chunk->v.ioaddr = NULL;
+ else
+ chunk->v.addr = NULL;
chunk->paddr = 0;
chunk->size = 0;
}
@@ -2475,19 +2487,24 @@ static void ath12k_qmi_free_target_mem_chunk(struct ath12k_base *ab)
int i, mlo_idx;
for (i = 0, mlo_idx = 0; i < ab->qmi.mem_seg_count; i++) {
- if (!ab->qmi.target_mem[i].v.addr)
- continue;
-
if (ab->qmi.target_mem[i].type == MLO_GLOBAL_MEM_REGION_TYPE) {
ath12k_qmi_free_mlo_mem_chunk(ab,
&ab->qmi.target_mem[i],
mlo_idx++);
} else {
- dma_free_coherent(ab->dev,
- ab->qmi.target_mem[i].prev_size,
- ab->qmi.target_mem[i].v.addr,
- ab->qmi.target_mem[i].paddr);
- ab->qmi.target_mem[i].v.addr = NULL;
+ if (test_bit(ATH12K_FLAG_FIXED_MEM_REGION, &ab->dev_flags) &&
+ ab->qmi.target_mem[i].v.ioaddr) {
+ iounmap(ab->qmi.target_mem[i].v.ioaddr);
+ ab->qmi.target_mem[i].v.ioaddr = NULL;
+ } else {
+ if (!ab->qmi.target_mem[i].v.addr)
+ continue;
+ dma_free_coherent(ab->dev,
+ ab->qmi.target_mem[i].prev_size,
+ ab->qmi.target_mem[i].v.addr,
+ ab->qmi.target_mem[i].paddr);
+ ab->qmi.target_mem[i].v.addr = NULL;
+ }
}
}
@@ -2640,6 +2657,128 @@ static int ath12k_qmi_alloc_target_mem_chunk(struct ath12k_base *ab)
return ret;
}
+static int ath12k_qmi_assign_target_mem_chunk(struct ath12k_base *ab)
+{
+ struct reserved_mem *rmem;
+ phys_addr_t bdf_size;
+ int i, idx, ret;
+
+ for (i = 0, idx = 0; i < ab->qmi.mem_seg_count; i++) {
+ switch (ab->qmi.target_mem[i].type) {
+ case HOST_DDR_REGION_TYPE:
+ rmem = ath12k_core_get_reserved_mem(ab, 0);
+ if (!rmem) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ if (rmem->size < ab->qmi.target_mem[i].size) {
+ ath12k_dbg(ab, ATH12K_DBG_QMI,
+ "failed to assign mem type %d req size %d avail size %lld\n",
+ ab->qmi.target_mem[i].type,
+ ab->qmi.target_mem[i].size,
+ rmem->size);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ab->qmi.target_mem[idx].paddr = rmem->base;
+ ab->qmi.target_mem[idx].v.ioaddr =
+ ioremap(ab->qmi.target_mem[idx].paddr,
+ ab->qmi.target_mem[i].size);
+ if (!ab->qmi.target_mem[idx].v.ioaddr) {
+ ret = -EIO;
+ goto out;
+ }
+ ab->qmi.target_mem[idx].size = ab->qmi.target_mem[i].size;
+ ab->qmi.target_mem[idx].type = ab->qmi.target_mem[i].type;
+ idx++;
+ break;
+ case BDF_MEM_REGION_TYPE:
+ rmem = ath12k_core_get_reserved_mem(ab, 0);
+ if (!rmem) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ bdf_size = rmem->size - ab->hw_params->bdf_addr_offset;
+ if (bdf_size < ab->qmi.target_mem[i].size) {
+ ath12k_dbg(ab, ATH12K_DBG_QMI,
+ "failed to assign mem type %d req size %d avail size %lld\n",
+ ab->qmi.target_mem[i].type,
+ ab->qmi.target_mem[i].size,
+ bdf_size);
+ ret = -EINVAL;
+ goto out;
+ }
+ ab->qmi.target_mem[idx].paddr =
+ rmem->base + ab->hw_params->bdf_addr_offset;
+ ab->qmi.target_mem[idx].v.ioaddr =
+ ioremap(ab->qmi.target_mem[idx].paddr,
+ ab->qmi.target_mem[i].size);
+ if (!ab->qmi.target_mem[idx].v.ioaddr) {
+ ret = -EIO;
+ goto out;
+ }
+ ab->qmi.target_mem[idx].size = ab->qmi.target_mem[i].size;
+ ab->qmi.target_mem[idx].type = ab->qmi.target_mem[i].type;
+ idx++;
+ break;
+ case CALDB_MEM_REGION_TYPE:
+ /* Cold boot calibration is not enabled in Ath12k. Hence,
+ * assign paddr = 0.
+ * Once cold boot calibration is enabled add support to
+ * assign reserved memory from DT.
+ */
+ ab->qmi.target_mem[idx].paddr = 0;
+ ab->qmi.target_mem[idx].v.ioaddr = NULL;
+ ab->qmi.target_mem[idx].size = ab->qmi.target_mem[i].size;
+ ab->qmi.target_mem[idx].type = ab->qmi.target_mem[i].type;
+ idx++;
+ break;
+ case M3_DUMP_REGION_TYPE:
+ rmem = ath12k_core_get_reserved_mem(ab, 1);
+ if (!rmem) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (rmem->size < ab->qmi.target_mem[i].size) {
+ ath12k_dbg(ab, ATH12K_DBG_QMI,
+ "failed to assign mem type %d req size %d avail size %lld\n",
+ ab->qmi.target_mem[i].type,
+ ab->qmi.target_mem[i].size,
+ rmem->size);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ab->qmi.target_mem[idx].paddr = rmem->base;
+ ab->qmi.target_mem[idx].v.ioaddr =
+ ioremap(ab->qmi.target_mem[idx].paddr,
+ ab->qmi.target_mem[i].size);
+ if (!ab->qmi.target_mem[idx].v.ioaddr) {
+ ret = -EIO;
+ goto out;
+ }
+ ab->qmi.target_mem[idx].size = ab->qmi.target_mem[i].size;
+ ab->qmi.target_mem[idx].type = ab->qmi.target_mem[i].type;
+ idx++;
+ break;
+ default:
+ ath12k_warn(ab, "qmi ignore invalid mem req type %d\n",
+ ab->qmi.target_mem[i].type);
+ break;
+ }
+ }
+ ab->qmi.mem_seg_count = idx;
+
+ return 0;
+out:
+ ath12k_qmi_free_target_mem_chunk(ab);
+ return ret;
+}
+
/* clang stack usage explodes if this is inlined */
static noinline_for_stack
int ath12k_qmi_request_target_cap(struct ath12k_base *ab)
@@ -3483,11 +3622,20 @@ static void ath12k_qmi_msg_mem_request_cb(struct qmi_handle *qmi_hdl,
msg->mem_seg[i].type, msg->mem_seg[i].size);
}
- ret = ath12k_qmi_alloc_target_mem_chunk(ab);
- if (ret) {
- ath12k_warn(ab, "qmi failed to alloc target memory: %d\n",
- ret);
- return;
+ if (test_bit(ATH12K_FLAG_FIXED_MEM_REGION, &ab->dev_flags)) {
+ ret = ath12k_qmi_assign_target_mem_chunk(ab);
+ if (ret) {
+ ath12k_warn(ab, "failed to assign qmi target memory: %d\n",
+ ret);
+ return;
+ }
+ } else {
+ ret = ath12k_qmi_alloc_target_mem_chunk(ab);
+ if (ret) {
+ ath12k_warn(ab, "qmi failed to alloc target memory: %d\n",
+ ret);
+ return;
+ }
}
ath12k_qmi_driver_event_post(qmi, ATH12K_QMI_EVENT_REQUEST_MEM, NULL);
--
2.34.1
