wifi: ath12k: configure RDDM size to MHI for device recovery

RDDM is Ram Dump Debug Module which is used to debug issues when the
firmware encounters an error. The rddm_size is needed by the firmware
while MHI goes to the RDDM state. Provide the size to MHI subsystem so
that the firmware restart works when the firmware crashes.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230721055305.20420-2-quic_wgong@quicinc.com

drivers/net/wireless/ath/ath12k/hw.c

@@ -911,6 +911,8 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
 		.rfkill_pin = 0,
 		.rfkill_cfg = 0,
 		.rfkill_on_level = 0,
+
+		.rddm_size = 0,
 	},
 	{
 		.name = "wcn7850 hw2.0",
@@ -972,6 +974,8 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
 		.rfkill_pin = 48,
 		.rfkill_cfg = 0,
 		.rfkill_on_level = 1,
+
+		.rddm_size = 0x780000,
 	},
 	{
 		.name = "qcn9274 hw2.0",
@@ -1031,6 +1035,8 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
 		.rfkill_pin = 0,
 		.rfkill_cfg = 0,
 		.rfkill_on_level = 0,
+
+		.rddm_size = 0,
 	},
 };
 

drivers/net/wireless/ath/ath12k/hw.h

@@ -190,6 +190,8 @@ struct ath12k_hw_params {
 	u32 rfkill_pin;
 	u32 rfkill_cfg;
 	u32 rfkill_on_level;
+
+	u32 rddm_size;
 };
 
 struct ath12k_hw_ops {

drivers/net/wireless/ath/ath12k/mhi.c

@@ -366,6 +366,7 @@ int ath12k_mhi_register(struct ath12k_pci *ab_pci)
 	mhi_ctrl->fw_image = ab_pci->amss_path;
 	mhi_ctrl->regs = ab->mem;
 	mhi_ctrl->reg_len = ab->mem_len;
+	mhi_ctrl->rddm_size = ab->hw_params->rddm_size;
 
 	ret = ath12k_mhi_get_msi(ab_pci);
 	if (ret) {