From: Xinming Hu <huxm@xxxxxxxxxxx>
This patch prints pcie scratch registers during firmware dump. They
will be useful for analysing firmware status.
Signed-off-by: Xinming Hu <huxm@xxxxxxxxxxx>
Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
---
drivers/net/wireless/marvell/mwifiex/main.c | 8 +++---
drivers/net/wireless/marvell/mwifiex/pcie.c | 42 +++++++++++++++++++++++++++++
drivers/net/wireless/marvell/mwifiex/pcie.h | 2 ++
3 files changed, 49 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c
index 3cfa946..04b975c 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -1074,12 +1074,14 @@ void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
priv->netdev->name, priv->num_tx_timeout);
}
- if (adapter->iface_type == MWIFIEX_SDIO) {
- p += sprintf(p, "\n=== SDIO register dump===\n");
+ if (adapter->iface_type == MWIFIEX_SDIO ||
+ adapter->iface_type == MWIFIEX_PCIE) {
+ p += sprintf(p, "\n=== %s register dump===\n",
+ adapter->iface_type == MWIFIEX_SDIO ?
+ "SDIO" : "PCIE");
if (adapter->if_ops.reg_dump)
p += adapter->if_ops.reg_dump(adapter, p);
}
-
p += sprintf(p, "\n=== more debug information\n");
debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
if (debug_info) {
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 6a06ca5..edf8b07 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -2355,6 +2355,47 @@ static int mwifiex_pcie_host_to_card(struct mwifiex_adapter *adapter, u8 type,
return 0;
}
+/* Function to dump PCIE scratch registers in case of FW crash
+ */
+static int
+mwifiex_pcie_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
+{
+ char *p = drv_buf;
+ char buf[256], *ptr;
+ int i;
+ u32 value;
+ struct pcie_service_card *card = adapter->card;
+ const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
+ int pcie_scratch_reg[] = {PCIE_SCRATCH_12_REG,
+ PCIE_SCRATCH_13_REG,
+ PCIE_SCRATCH_14_REG};
+
+ if (!p)
+ return 0;
+
+ mwifiex_dbg(adapter, MSG, "PCIE register dump start\n");
+
+ if (mwifiex_read_reg(adapter, reg->fw_status, &value)) {
+ mwifiex_dbg(adapter, ERROR, "failed to read firmware status");
+ return 0;
+ }
+
+ ptr = buf;
+ mwifiex_dbg(adapter, MSG, "pcie scratch register:");
+ for (i = 0; i < ARRAY_SIZE(pcie_scratch_reg); i++) {
+ mwifiex_read_reg(adapter, pcie_scratch_reg[i], &value);
+ ptr += sprintf(ptr, "reg:0x%x, value=0x%x\n",
+ pcie_scratch_reg[i], value);
+ }
+
+ mwifiex_dbg(adapter, MSG, "%s\n", buf);
+ p += sprintf(p, "%s\n", buf);
+
+ mwifiex_dbg(adapter, MSG, "PCIE register dump end\n");
+
+ return p - drv_buf;
+}
+
/* This function read/write firmware */
static enum rdwr_status
mwifiex_pcie_rdwr_firmware(struct mwifiex_adapter *adapter, u8 doneflag)
@@ -2899,6 +2940,7 @@ static struct mwifiex_if_ops pcie_ops = {
.cleanup_mpa_buf = NULL,
.init_fw_port = mwifiex_pcie_init_fw_port,
.clean_pcie_ring = mwifiex_clean_pcie_ring_buf,
+ .reg_dump = mwifiex_pcie_reg_dump,
.device_dump = mwifiex_pcie_device_dump,
};
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.h b/drivers/net/wireless/marvell/mwifiex/pcie.h
index 4455d19..cc7a5df 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.h
@@ -73,6 +73,8 @@
#define PCIE_SCRATCH_10_REG 0xCE8
#define PCIE_SCRATCH_11_REG 0xCEC
#define PCIE_SCRATCH_12_REG 0xCF0
+#define PCIE_SCRATCH_13_REG 0xCF8
+#define PCIE_SCRATCH_14_REG 0xCFC
#define PCIE_RD_DATA_PTR_Q0_Q1 0xC08C
#define PCIE_WR_DATA_PTR_Q0_Q1 0xC05C
--
1.8.1.4
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