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-rw-r--r--drivers/fsi/fsi-core.c4
-rw-r--r--drivers/fsi/fsi-master-aspeed.c33
-rw-r--r--drivers/fsi/fsi-master-ast-cf.c2
-rw-r--r--drivers/fsi/fsi-master-gpio.c1
-rw-r--r--drivers/fsi/fsi-occ.c12
-rw-r--r--drivers/fsi/fsi-sbefifo.c10
-rw-r--r--drivers/fsi/fsi-scom.c105
-rw-r--r--drivers/hwmon/occ/common.c7
8 files changed, 82 insertions, 92 deletions
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 4e60e84cd17a..59ddc9fd5bca 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -724,7 +724,7 @@ static ssize_t cfam_read(struct file *filep, char __user *buf, size_t count,
rc = count;
fail:
*offset = off;
- return count;
+ return rc;
}
static ssize_t cfam_write(struct file *filep, const char __user *buf,
@@ -761,7 +761,7 @@ static ssize_t cfam_write(struct file *filep, const char __user *buf,
rc = count;
fail:
*offset = off;
- return count;
+ return rc;
}
static loff_t cfam_llseek(struct file *file, loff_t offset, int whence)
diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c
index 90dbe58ca1ed..8606e55c1721 100644
--- a/drivers/fsi/fsi-master-aspeed.c
+++ b/drivers/fsi/fsi-master-aspeed.c
@@ -92,7 +92,7 @@ static const u32 fsi_base = 0xa0000000;
static u16 aspeed_fsi_divisor = FSI_DIVISOR_DEFAULT;
module_param_named(bus_div,aspeed_fsi_divisor, ushort, 0);
-#define OPB_POLL_TIMEOUT 10000
+#define OPB_POLL_TIMEOUT 500
static int __opb_write(struct fsi_master_aspeed *aspeed, u32 addr,
u32 val, u32 transfer_size)
@@ -101,11 +101,15 @@ static int __opb_write(struct fsi_master_aspeed *aspeed, u32 addr,
u32 reg, status;
int ret;
- writel(CMD_WRITE, base + OPB0_RW);
- writel(transfer_size, base + OPB0_XFER_SIZE);
- writel(addr, base + OPB0_FSI_ADDR);
- writel(val, base + OPB0_FSI_DATA_W);
- writel(0x1, base + OPB_IRQ_CLEAR);
+ /*
+ * The ordering of these writes up until the trigger
+ * write does not matter, so use writel_relaxed.
+ */
+ writel_relaxed(CMD_WRITE, base + OPB0_RW);
+ writel_relaxed(transfer_size, base + OPB0_XFER_SIZE);
+ writel_relaxed(addr, base + OPB0_FSI_ADDR);
+ writel_relaxed(val, base + OPB0_FSI_DATA_W);
+ writel_relaxed(0x1, base + OPB_IRQ_CLEAR);
writel(0x1, base + OPB_TRIGGER);
ret = readl_poll_timeout(base + OPB_IRQ_STATUS, reg,
@@ -149,10 +153,14 @@ static int __opb_read(struct fsi_master_aspeed *aspeed, uint32_t addr,
u32 result, reg;
int status, ret;
- writel(CMD_READ, base + OPB0_RW);
- writel(transfer_size, base + OPB0_XFER_SIZE);
- writel(addr, base + OPB0_FSI_ADDR);
- writel(0x1, base + OPB_IRQ_CLEAR);
+ /*
+ * The ordering of these writes up until the trigger
+ * write does not matter, so use writel_relaxed.
+ */
+ writel_relaxed(CMD_READ, base + OPB0_RW);
+ writel_relaxed(transfer_size, base + OPB0_XFER_SIZE);
+ writel_relaxed(addr, base + OPB0_FSI_ADDR);
+ writel_relaxed(0x1, base + OPB_IRQ_CLEAR);
writel(0x1, base + OPB_TRIGGER);
ret = readl_poll_timeout(base + OPB_IRQ_STATUS, reg,
@@ -525,7 +533,6 @@ static int tacoma_cabled_fsi_fixup(struct device *dev)
static int fsi_master_aspeed_probe(struct platform_device *pdev)
{
struct fsi_master_aspeed *aspeed;
- struct resource *res;
int rc, links, reg;
__be32 raw;
@@ -541,8 +548,7 @@ static int fsi_master_aspeed_probe(struct platform_device *pdev)
aspeed->dev = &pdev->dev;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- aspeed->base = devm_ioremap_resource(&pdev->dev, res);
+ aspeed->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(aspeed->base))
return PTR_ERR(aspeed->base);
@@ -645,6 +651,7 @@ static const struct of_device_id fsi_master_aspeed_match[] = {
{ .compatible = "aspeed,ast2600-fsi-master" },
{ },
};
+MODULE_DEVICE_TABLE(of, fsi_master_aspeed_match);
static struct platform_driver fsi_master_aspeed_driver = {
.driver = {
diff --git a/drivers/fsi/fsi-master-ast-cf.c b/drivers/fsi/fsi-master-ast-cf.c
index 57a779a89b07..24292acdbaf8 100644
--- a/drivers/fsi/fsi-master-ast-cf.c
+++ b/drivers/fsi/fsi-master-ast-cf.c
@@ -1309,7 +1309,6 @@ static int fsi_master_acf_probe(struct platform_device *pdev)
master->cf_mem = devm_ioremap_resource(&pdev->dev, &res);
if (IS_ERR(master->cf_mem)) {
rc = PTR_ERR(master->cf_mem);
- dev_err(&pdev->dev, "Error %d mapping coldfire memory\n", rc);
goto err_free;
}
dev_dbg(&pdev->dev, "DRAM allocation @%x\n", master->cf_mem_addr);
@@ -1427,6 +1426,7 @@ static const struct of_device_id fsi_master_acf_match[] = {
{ .compatible = "aspeed,ast2500-cf-fsi-master" },
{ },
};
+MODULE_DEVICE_TABLE(of, fsi_master_acf_match);
static struct platform_driver fsi_master_acf = {
.driver = {
diff --git a/drivers/fsi/fsi-master-gpio.c b/drivers/fsi/fsi-master-gpio.c
index aa97c4a250cb..7d5f29b4b595 100644
--- a/drivers/fsi/fsi-master-gpio.c
+++ b/drivers/fsi/fsi-master-gpio.c
@@ -882,6 +882,7 @@ static const struct of_device_id fsi_master_gpio_match[] = {
{ .compatible = "fsi-master-gpio" },
{ },
};
+MODULE_DEVICE_TABLE(of, fsi_master_gpio_match);
static struct platform_driver fsi_master_gpio_driver = {
.driver = {
diff --git a/drivers/fsi/fsi-occ.c b/drivers/fsi/fsi-occ.c
index 10ca2e290655..b223f0ef337b 100644
--- a/drivers/fsi/fsi-occ.c
+++ b/drivers/fsi/fsi-occ.c
@@ -223,7 +223,8 @@ static const struct file_operations occ_fops = {
.release = occ_release,
};
-static int occ_verify_checksum(struct occ_response *resp, u16 data_length)
+static int occ_verify_checksum(struct occ *occ, struct occ_response *resp,
+ u16 data_length)
{
/* Fetch the two bytes after the data for the checksum. */
u16 checksum_resp = get_unaligned_be16(&resp->data[data_length]);
@@ -238,8 +239,11 @@ static int occ_verify_checksum(struct occ_response *resp, u16 data_length)
for (i = 0; i < data_length; ++i)
checksum += resp->data[i];
- if (checksum != checksum_resp)
+ if (checksum != checksum_resp) {
+ dev_err(occ->dev, "Bad checksum: %04x!=%04x\n", checksum,
+ checksum_resp);
return -EBADMSG;
+ }
return 0;
}
@@ -495,6 +499,7 @@ int fsi_occ_submit(struct device *dev, const void *request, size_t req_len,
goto done;
if (resp->return_status == OCC_RESP_CMD_IN_PRG ||
+ resp->return_status == OCC_RESP_CRIT_INIT ||
resp->seq_no != seq_no) {
rc = -ETIMEDOUT;
@@ -532,7 +537,7 @@ int fsi_occ_submit(struct device *dev, const void *request, size_t req_len,
}
*resp_len = resp_data_length + 7;
- rc = occ_verify_checksum(resp, resp_data_length);
+ rc = occ_verify_checksum(occ, resp, resp_data_length);
done:
mutex_unlock(&occ->occ_lock);
@@ -635,6 +640,7 @@ static const struct of_device_id occ_match[] = {
},
{ },
};
+MODULE_DEVICE_TABLE(of, occ_match);
static struct platform_driver occ_driver = {
.driver = {
diff --git a/drivers/fsi/fsi-sbefifo.c b/drivers/fsi/fsi-sbefifo.c
index bfd5e5da8020..84cb965bfed5 100644
--- a/drivers/fsi/fsi-sbefifo.c
+++ b/drivers/fsi/fsi-sbefifo.c
@@ -325,7 +325,8 @@ static int sbefifo_up_write(struct sbefifo *sbefifo, __be32 word)
static int sbefifo_request_reset(struct sbefifo *sbefifo)
{
struct device *dev = &sbefifo->fsi_dev->dev;
- u32 status, timeout;
+ unsigned long end_time;
+ u32 status;
int rc;
dev_dbg(dev, "Requesting FIFO reset\n");
@@ -341,7 +342,8 @@ static int sbefifo_request_reset(struct sbefifo *sbefifo)
}
/* Wait for it to complete */
- for (timeout = 0; timeout < SBEFIFO_RESET_TIMEOUT; timeout++) {
+ end_time = jiffies + msecs_to_jiffies(SBEFIFO_RESET_TIMEOUT);
+ while (!time_after(jiffies, end_time)) {
rc = sbefifo_regr(sbefifo, SBEFIFO_UP | SBEFIFO_STS, &status);
if (rc) {
dev_err(dev, "Failed to read UP fifo status during reset"
@@ -355,7 +357,7 @@ static int sbefifo_request_reset(struct sbefifo *sbefifo)
return 0;
}
- msleep(1);
+ cond_resched();
}
dev_err(dev, "FIFO reset timed out\n");
@@ -400,7 +402,7 @@ static int sbefifo_cleanup_hw(struct sbefifo *sbefifo)
/* The FIFO already contains a reset request from the SBE ? */
if (down_status & SBEFIFO_STS_RESET_REQ) {
dev_info(dev, "Cleanup: FIFO reset request set, resetting\n");
- rc = sbefifo_regw(sbefifo, SBEFIFO_UP, SBEFIFO_PERFORM_RESET);
+ rc = sbefifo_regw(sbefifo, SBEFIFO_DOWN, SBEFIFO_PERFORM_RESET);
if (rc) {
sbefifo->broken = true;
dev_err(dev, "Cleanup: Reset reg write failed, rc=%d\n", rc);
diff --git a/drivers/fsi/fsi-scom.c b/drivers/fsi/fsi-scom.c
index b45bfab7b7f5..da1486bb6a14 100644
--- a/drivers/fsi/fsi-scom.c
+++ b/drivers/fsi/fsi-scom.c
@@ -38,9 +38,10 @@
#define SCOM_STATUS_PIB_RESP_MASK 0x00007000
#define SCOM_STATUS_PIB_RESP_SHIFT 12
-#define SCOM_STATUS_ANY_ERR (SCOM_STATUS_PROTECTION | \
- SCOM_STATUS_PARITY | \
- SCOM_STATUS_PIB_ABORT | \
+#define SCOM_STATUS_FSI2PIB_ERROR (SCOM_STATUS_PROTECTION | \
+ SCOM_STATUS_PARITY | \
+ SCOM_STATUS_PIB_ABORT)
+#define SCOM_STATUS_ANY_ERR (SCOM_STATUS_FSI2PIB_ERROR | \
SCOM_STATUS_PIB_RESP_MASK)
/* SCOM address encodings */
#define XSCOM_ADDR_IND_FLAG BIT_ULL(63)
@@ -60,7 +61,6 @@
#define XSCOM_ADDR_FORM1_HI_SHIFT 20
/* Retries */
-#define SCOM_MAX_RETRIES 100 /* Retries on busy */
#define SCOM_MAX_IND_RETRIES 10 /* Retries indirect not ready */
struct scom_device {
@@ -240,14 +240,15 @@ static int handle_fsi2pib_status(struct scom_device *scom, uint32_t status)
{
uint32_t dummy = -1;
- if (status & SCOM_STATUS_PROTECTION)
- return -EPERM;
- if (status & SCOM_STATUS_PARITY) {
+ if (status & SCOM_STATUS_FSI2PIB_ERROR)
fsi_device_write(scom->fsi_dev, SCOM_FSI2PIB_RESET_REG, &dummy,
sizeof(uint32_t));
+
+ if (status & SCOM_STATUS_PROTECTION)
+ return -EPERM;
+ if (status & SCOM_STATUS_PARITY)
return -EIO;
- }
- /* Return -EBUSY on PIB abort to force a retry */
+
if (status & SCOM_STATUS_PIB_ABORT)
return -EBUSY;
return 0;
@@ -284,69 +285,39 @@ static int handle_pib_status(struct scom_device *scom, uint8_t status)
static int put_scom(struct scom_device *scom, uint64_t value,
uint64_t addr)
{
- uint32_t status, dummy = -1;
- int rc, retries;
-
- for (retries = 0; retries < SCOM_MAX_RETRIES; retries++) {
- rc = raw_put_scom(scom, value, addr, &status);
- if (rc) {
- /* Try resetting the bridge if FSI fails */
- if (rc != -ENODEV && retries == 0) {
- fsi_device_write(scom->fsi_dev, SCOM_FSI2PIB_RESET_REG,
- &dummy, sizeof(uint32_t));
- rc = -EBUSY;
- } else
- return rc;
- } else
- rc = handle_fsi2pib_status(scom, status);
- if (rc && rc != -EBUSY)
- break;
- if (rc == 0) {
- rc = handle_pib_status(scom,
- (status & SCOM_STATUS_PIB_RESP_MASK)
- >> SCOM_STATUS_PIB_RESP_SHIFT);
- if (rc && rc != -EBUSY)
- break;
- }
- if (rc == 0)
- break;
- msleep(1);
- }
- return rc;
+ uint32_t status;
+ int rc;
+
+ rc = raw_put_scom(scom, value, addr, &status);
+ if (rc == -ENODEV)
+ return rc;
+
+ rc = handle_fsi2pib_status(scom, status);
+ if (rc)
+ return rc;
+
+ return handle_pib_status(scom,
+ (status & SCOM_STATUS_PIB_RESP_MASK)
+ >> SCOM_STATUS_PIB_RESP_SHIFT);
}
static int get_scom(struct scom_device *scom, uint64_t *value,
uint64_t addr)
{
- uint32_t status, dummy = -1;
- int rc, retries;
-
- for (retries = 0; retries < SCOM_MAX_RETRIES; retries++) {
- rc = raw_get_scom(scom, value, addr, &status);
- if (rc) {
- /* Try resetting the bridge if FSI fails */
- if (rc != -ENODEV && retries == 0) {
- fsi_device_write(scom->fsi_dev, SCOM_FSI2PIB_RESET_REG,
- &dummy, sizeof(uint32_t));
- rc = -EBUSY;
- } else
- return rc;
- } else
- rc = handle_fsi2pib_status(scom, status);
- if (rc && rc != -EBUSY)
- break;
- if (rc == 0) {
- rc = handle_pib_status(scom,
- (status & SCOM_STATUS_PIB_RESP_MASK)
- >> SCOM_STATUS_PIB_RESP_SHIFT);
- if (rc && rc != -EBUSY)
- break;
- }
- if (rc == 0)
- break;
- msleep(1);
- }
- return rc;
+ uint32_t status;
+ int rc;
+
+ rc = raw_get_scom(scom, value, addr, &status);
+ if (rc == -ENODEV)
+ return rc;
+
+ rc = handle_fsi2pib_status(scom, status);
+ if (rc)
+ return rc;
+
+ return handle_pib_status(scom,
+ (status & SCOM_STATUS_PIB_RESP_MASK)
+ >> SCOM_STATUS_PIB_RESP_SHIFT);
}
static ssize_t scom_read(struct file *filep, char __user *buf, size_t len,
diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c
index 967532afb1c0..0d68a78be980 100644
--- a/drivers/hwmon/occ/common.c
+++ b/drivers/hwmon/occ/common.c
@@ -1151,6 +1151,8 @@ int occ_setup(struct occ *occ, const char *name)
{
int rc;
+ /* start with 1 to avoid false match with zero-initialized SRAM buffer */
+ occ->seq_no = 1;
mutex_init(&occ->lock);
occ->groups[0] = &occ->group;
@@ -1160,8 +1162,9 @@ int occ_setup(struct occ *occ, const char *name)
dev_info(occ->bus_dev, "host is not ready\n");
return rc;
} else if (rc < 0) {
- dev_err(occ->bus_dev, "failed to get OCC poll response: %d\n",
- rc);
+ dev_err(occ->bus_dev,
+ "failed to get OCC poll response=%02x: %d\n",
+ occ->resp.return_status, rc);
return rc;
}
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-03 17:57:23 +0000