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.h | 1 +
drivers/net/wireless/ath/ath12k/qmi.c | 133 +++++++++++++++++++++++--
2 files changed, 128 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index ec95a9baf36a..75bc863ca381 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -212,6 +212,7 @@ enum ath12k_dev_flags {
ATH12K_FLAG_HTC_SUSPEND_COMPLETE,
ATH12K_FLAG_CE_IRQ_ENABLED,
ATH12K_FLAG_EXT_IRQ_ENABLED,
+ ATH12K_FLAG_FIXED_MEM_REGION,
};
struct ath12k_tx_conf {
diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c
index 668232d83c10..ec8859031824 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
@@ -2294,7 +2296,8 @@ static 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);
@@ -2357,6 +2360,11 @@ static void ath12k_qmi_free_target_mem_chunk(struct ath12k_base *ab)
int i;
for (i = 0; i < ab->qmi.mem_seg_count; i++) {
+ 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;
+ }
if (!ab->qmi.target_mem[i].v.addr)
continue;
@@ -2435,6 +2443,110 @@ static int ath12k_qmi_alloc_target_mem_chunk(struct ath12k_base *ab)
return 0;
}
+static int ath12k_qmi_assign_target_mem_chunk(struct ath12k_base *ab)
+{
+ struct device *dev = ab->dev;
+ struct device_node *mem_node, *dev_node;
+ struct resource res, m3_res;
+ 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:
+ mem_node = of_parse_phandle(dev->of_node, "memory-region", 0);
+ if (!mem_node) {
+ ath12k_dbg(ab, ATH12K_DBG_QMI,
+ "memory-region not defined in device-tree\n");
+ ret = -ENODEV;
+ goto out;
+ }
+
+ ret = of_address_to_resource(mem_node, 0, &res);
+ of_node_put(mem_node);
+ if (ret) {
+ ath12k_dbg(ab, ATH12K_DBG_QMI,
+ "fail to get reg from memory-region\n");
+ goto out;
+ }
+
+ if (res.end - res.start + 1 < 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,
+ (res.end - res.start + 1));
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ab->qmi.target_mem[idx].paddr = res.start;
+ 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:
+ dev_node = of_find_node_by_name(NULL, "m3_dump");
+ if (!dev_node || of_address_to_resource(dev_node, 0, &m3_res)) {
+ ath12k_err(ab, "m3_dump not defined in device-tree\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (m3_res.end - m3_res.start + 1 < 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,
+ (m3_res.end - m3_res.start + 1));
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ab->qmi.target_mem[idx].paddr = m3_res.start;
+ 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;
+}
+
static int ath12k_qmi_request_target_cap(struct ath12k_base *ab)
{
struct qmi_wlanfw_cap_req_msg_v01 req = {};
@@ -3185,11 +3297,20 @@ 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
