[PATCH net-next 0/9] bnxt_en: updates for net-next.

[PATCH net-next 0/9] bnxt_en: updates for net-next.

[Michael Chan]

Non-critical bug fixes, improvements, a new ethtool feature, and a new
device ID.

Michael Chan (9):
  bnxt_en: Fix invalid max channel parameter in ethtool -l.
  bnxt_en: Add Support for ETHTOOL_GMODULEINFO and ETHTOOL_GMODULEEEPRO
  bnxt_en: Report PCIe link speed and width during driver load
  bnxt_en: Reduce maximum ring pages if page size is 64K.
  bnxt_en: Improve the delay logic for firmware response.
  bnxt_en: Fix length value in dmesg log firmware error message.
  bnxt_en: Simplify and improve unsupported SFP+ module reporting.
  bnxt_en: Add BCM57314 device ID.
  bnxt_en: Use dma_rmb() instead of rmb().

 drivers/net/ethernet/broadcom/bnxt/bnxt.c         | 111 +++++++++++--------
 drivers/net/ethernet/broadcom/bnxt/bnxt.h         |  19 +++-
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 126 +++++++++++++++++++++-
 drivers/net/ethernet/broadcom/bnxt/bnxt_hsi.h     |  34 ++++++
 4 files changed, 241 insertions(+), 49 deletions(-)

-- 
1.8.3.1

[PATCH net-next 1/9] bnxt_en: Fix invalid max channel parameter in ethtool -l.

[Michael Chan]

From: Satish Baddipadige <sbaddipa@broadcom.com>

When there is only 1 MSI-X vector or in INTA mode, tx and rx pre-set
max channel parameters are shown incorrectly in ethtool -l.  With only 1
vector, bnxt_get_max_rings() will return -ENOMEM.  bnxt_get_channels
should check this return value, and set max_rx/max_tx to 0 if it is
non-zero.

Signed-off-by: Satish Baddipadige <sbaddipa@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index d6e41f2..28171f9 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -327,7 +327,11 @@ static void bnxt_get_channels(struct net_device *dev,
 	bnxt_get_max_rings(bp, &max_rx_rings, &max_tx_rings, true);
 	channel->max_combined = max_rx_rings;
 
-	bnxt_get_max_rings(bp, &max_rx_rings, &max_tx_rings, false);
+	if (bnxt_get_max_rings(bp, &max_rx_rings, &max_tx_rings, false)) {
+		max_rx_rings = 0;
+		max_tx_rings = 0;
+	}
+
 	tcs = netdev_get_num_tc(dev);
 	if (tcs > 1)
 		max_tx_rings /= tcs;
-- 
1.8.3.1

[PATCH net-next 2/9] bnxt_en: Add Support for ETHTOOL_GMODULEINFO and ETHTOOL_GMODULEEEPRO

[Michael Chan]

From: Ajit Khaparde <ajit.khaparde@broadcom.com>

Add support to fetch the SFP EEPROM settings from the firmware
and display it via the ethtool -m command.  We support SFP+ and QSFP
modules.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c         |   1 +
 drivers/net/ethernet/broadcom/bnxt/bnxt.h         |  11 ++
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 120 ++++++++++++++++++++++
 drivers/net/ethernet/broadcom/bnxt/bnxt_hsi.h     |  34 ++++++
 4 files changed, 166 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 6a5a717..59b2e36 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -4671,6 +4671,7 @@ static int bnxt_update_link(struct bnxt *bp, bool chng_link_state)
 	link_info->transceiver = resp->xcvr_pkg_type;
 	link_info->phy_addr = resp->eee_config_phy_addr &
 			      PORT_PHY_QCFG_RESP_PHY_ADDR_MASK;
+	link_info->module_status = resp->module_status;
 
 	if (bp->flags & BNXT_FLAG_EEE_CAP) {
 		struct ethtool_eee *eee = &bp->eee;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 6289635..355843b 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -829,6 +829,7 @@ struct bnxt_link_info {
 	u16			lp_auto_link_speeds;
 	u16			force_link_speed;
 	u32			preemphasis;
+	u8			module_status;
 
 	/* copy of requested setting from ethtool cmd */
 	u8			autoneg;
@@ -1121,6 +1122,16 @@ static inline void bnxt_disable_poll(struct bnxt_napi *bnapi)
 
 #endif
 
+#define I2C_DEV_ADDR_A0				0xa0
+#define I2C_DEV_ADDR_A2				0xa2
+#define SFP_EEPROM_SFF_8472_COMP_ADDR		0x5e
+#define SFP_EEPROM_SFF_8472_COMP_SIZE		1
+#define SFF_MODULE_ID_SFP			0x3
+#define SFF_MODULE_ID_QSFP			0xc
+#define SFF_MODULE_ID_QSFP_PLUS			0xd
+#define SFF_MODULE_ID_QSFP28			0x11
+#define BNXT_MAX_PHY_I2C_RESP_SIZE		64
+
 void bnxt_set_ring_params(struct bnxt *);
 void bnxt_hwrm_cmd_hdr_init(struct bnxt *, void *, u16, u16, u16);
 int _hwrm_send_message(struct bnxt *, void *, u32, int);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 28171f9..93a3e5f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -1498,6 +1498,124 @@ static int bnxt_get_eee(struct net_device *dev, struct ethtool_eee *edata)
 	return 0;
 }
 
+static int bnxt_read_sfp_module_eeprom_info(struct bnxt *bp, u16 i2c_addr,
+					    u16 page_number, u16 start_addr,
+					    u16 data_length, u8 *buf)
+{
+	struct hwrm_port_phy_i2c_read_input req = {0};
+	struct hwrm_port_phy_i2c_read_output *output = bp->hwrm_cmd_resp_addr;
+	int rc, byte_offset = 0;
+
+	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_I2C_READ, -1, -1);
+	req.i2c_slave_addr = i2c_addr;
+	req.page_number = cpu_to_le16(page_number);
+	req.port_id = cpu_to_le16(bp->pf.port_id);
+	do {
+		u16 xfer_size;
+
+		xfer_size = min_t(u16, data_length, BNXT_MAX_PHY_I2C_RESP_SIZE);
+		data_length -= xfer_size;
+		req.page_offset = cpu_to_le16(start_addr + byte_offset);
+		req.data_length = xfer_size;
+		req.enables = cpu_to_le32(start_addr + byte_offset ?
+				 PORT_PHY_I2C_READ_REQ_ENABLES_PAGE_OFFSET : 0);
+		mutex_lock(&bp->hwrm_cmd_lock);
+		rc = _hwrm_send_message(bp, &req, sizeof(req),
+					HWRM_CMD_TIMEOUT);
+		if (!rc)
+			memcpy(buf + byte_offset, output->data, xfer_size);
+		mutex_unlock(&bp->hwrm_cmd_lock);
+		byte_offset += xfer_size;
+	} while (!rc && data_length > 0);
+
+	return rc;
+}
+
+static int bnxt_get_module_info(struct net_device *dev,
+				struct ethtool_modinfo *modinfo)
+{
+	struct bnxt *bp = netdev_priv(dev);
+	struct hwrm_port_phy_i2c_read_input req = {0};
+	struct hwrm_port_phy_i2c_read_output *output = bp->hwrm_cmd_resp_addr;
+	int rc;
+
+	/* No point in going further if phy status indicates
+	 * module is not inserted or if it is powered down or
+	 * if it is of type 10GBase-T
+	 */
+	if (bp->link_info.module_status >
+		PORT_PHY_QCFG_RESP_MODULE_STATUS_WARNINGMSG)
+		return -EOPNOTSUPP;
+
+	/* This feature is not supported in older firmware versions */
+	if (bp->hwrm_spec_code < 0x10202)
+		return -EOPNOTSUPP;
+
+	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_I2C_READ, -1, -1);
+	req.i2c_slave_addr = I2C_DEV_ADDR_A0;
+	req.page_number = 0;
+	req.page_offset = cpu_to_le16(SFP_EEPROM_SFF_8472_COMP_ADDR);
+	req.data_length = SFP_EEPROM_SFF_8472_COMP_SIZE;
+	req.port_id = cpu_to_le16(bp->pf.port_id);
+	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	if (!rc) {
+		u32 module_id = le32_to_cpu(output->data[0]);
+
+		switch (module_id) {
+		case SFF_MODULE_ID_SFP:
+			modinfo->type = ETH_MODULE_SFF_8472;
+			modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
+			break;
+		case SFF_MODULE_ID_QSFP:
+		case SFF_MODULE_ID_QSFP_PLUS:
+			modinfo->type = ETH_MODULE_SFF_8436;
+			modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
+			break;
+		case SFF_MODULE_ID_QSFP28:
+			modinfo->type = ETH_MODULE_SFF_8636;
+			modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
+			break;
+		default:
+			rc = -EOPNOTSUPP;
+			break;
+		}
+	}
+	mutex_unlock(&bp->hwrm_cmd_lock);
+	return rc;
+}
+
+static int bnxt_get_module_eeprom(struct net_device *dev,
+				  struct ethtool_eeprom *eeprom,
+				  u8 *data)
+{
+	struct bnxt *bp = netdev_priv(dev);
+	u16  start = eeprom->offset, length = eeprom->len;
+	int rc;
+
+	memset(data, 0, eeprom->len);
+
+	/* Read A0 portion of the EEPROM */
+	if (start < ETH_MODULE_SFF_8436_LEN) {
+		if (start + eeprom->len > ETH_MODULE_SFF_8436_LEN)
+			length = ETH_MODULE_SFF_8436_LEN - start;
+		rc = bnxt_read_sfp_module_eeprom_info(bp, I2C_DEV_ADDR_A0, 0,
+						      start, length, data);
+		if (rc)
+			return rc;
+		start += length;
+		length = eeprom->len - length;
+	}
+
+	/* Read A2 portion of the EEPROM */
+	if (length) {
+		start -= ETH_MODULE_SFF_8436_LEN;
+		bnxt_read_sfp_module_eeprom_info(bp, I2C_DEV_ADDR_A2, 1, start,
+						 length, data + start);
+	}
+	return rc;
+}
+
 const struct ethtool_ops bnxt_ethtool_ops = {
 	.get_settings		= bnxt_get_settings,
 	.set_settings		= bnxt_set_settings,
@@ -1528,4 +1646,6 @@ const struct ethtool_ops bnxt_ethtool_ops = {
 	.get_link		= bnxt_get_link,
 	.get_eee		= bnxt_get_eee,
 	.set_eee		= bnxt_set_eee,
+	.get_module_info	= bnxt_get_module_info,
+	.get_module_eeprom	= bnxt_get_module_eeprom,
 };
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hsi.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_hsi.h
index 80f9556..05e3c49 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hsi.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hsi.h
@@ -2093,6 +2093,40 @@ struct hwrm_port_phy_qcaps_output {
 	#define PORT_PHY_QCAPS_RESP_VALID_SFT			    24
 };
 
+/* hwrm_port_phy_i2c_read */
+/* Input (40 bytes) */
+struct hwrm_port_phy_i2c_read_input {
+	__le16 req_type;
+	__le16 cmpl_ring;
+	__le16 seq_id;
+	__le16 target_id;
+	__le64 resp_addr;
+	__le32 flags;
+	__le32 enables;
+	#define PORT_PHY_I2C_READ_REQ_ENABLES_PAGE_OFFSET	    0x1UL
+	__le16 port_id;
+	u8 i2c_slave_addr;
+	u8 unused_0;
+	__le16 page_number;
+	__le16 page_offset;
+	u8 data_length;
+	u8 unused_1[7];
+};
+
+/* Output (80 bytes) */
+struct hwrm_port_phy_i2c_read_output {
+	__le16 error_code;
+	__le16 req_type;
+	__le16 seq_id;
+	__le16 resp_len;
+	__le32 data[16];
+	__le32 unused_0;
+	u8 unused_1;
+	u8 unused_2;
+	u8 unused_3;
+	u8 valid;
+};
+
 /* Input (24 bytes) */
 struct hwrm_queue_qportcfg_input {
 	__le16 req_type;
-- 
1.8.3.1

Re: [PATCH net-next 2/9] bnxt_en: Add Support for ETHTOOL_GMODULEINFO and ETHTOOL_GMODULEEEPRO

[Ben Hutchings]

[-- Attachment #1: Type: text/plain, Size: 856 bytes --]

On Sat, 2016-05-14 at 20:29 -0400, Michael Chan wrote:
> From: Ajit Khaparde <ajit.khaparde@broadcom.com>
[...]
> +	/* Read A2 portion of the EEPROM */
> +	if (length) {
> +		start -= ETH_MODULE_SFF_8436_LEN;
> +		bnxt_read_sfp_module_eeprom_info(bp, I2C_DEV_ADDR_A2, 1, start,
> +						 length, data + start);

The output address calculation (data + start) makes no sense at all.
If eeprom->offset < ETH_MODULE_SFF_8436_LEN then start == 0 here and
this read overwrites earlier data in the output buffer.  If
eeeprom->offset > ETH_MODULE_SFF_8436_LEN then start > 0 here and this
overruns the output buffer.

I think that 'data' should be incremented along with 'start' in the
previous if-block.

Ben.

> +	}
> +	return rc;
> +}
[...]

-- 
Ben Hutchings
For every action, there is an equal and opposite criticism. - Harrison

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Re: [PATCH net-next 2/9] bnxt_en: Add Support for ETHTOOL_GMODULEINFO and ETHTOOL_GMODULEEEPRO

[Michael Chan]

On Sat, May 14, 2016 at 6:31 PM, Ben Hutchings <ben@decadent.org.uk> wrote:
> On Sat, 2016-05-14 at 20:29 -0400, Michael Chan wrote:
>> From: Ajit Khaparde <ajit.khaparde@broadcom.com>
> [...]
>> +     /* Read A2 portion of the EEPROM */
>> +     if (length) {
>> +             start -= ETH_MODULE_SFF_8436_LEN;
>> +             bnxt_read_sfp_module_eeprom_info(bp, I2C_DEV_ADDR_A2, 1, start,
>> +                                              length, data + start);
>
> The output address calculation (data + start) makes no sense at all.
> If eeprom->offset < ETH_MODULE_SFF_8436_LEN then start == 0 here and
> this read overwrites earlier data in the output buffer.  If
> eeeprom->offset > ETH_MODULE_SFF_8436_LEN then start > 0 here and this
> overruns the output buffer.
>
> I think that 'data' should be incremented along with 'start' in the
> previous if-block.
>

Yes, you're right.  We'll fix it and resend.  Thanks.

[PATCH net-next 3/9] bnxt_en: Report PCIe link speed and width during driver load

[Michael Chan]

From: Ajit Khaparde <ajit.khaparde@broadcom.com>

Add code to log a message during driver load indicating PCIe link
speed and width.

The log message will look like this:
bnxt_en 0000:86:00.0 eth0: PCIe: Speed 8.0GT/s Width x8

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 59b2e36..ba0c3e5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -6198,6 +6198,22 @@ static int bnxt_set_dflt_rings(struct bnxt *bp)
 	return rc;
 }
 
+static void bnxt_parse_log_pcie_link(struct bnxt *bp)
+{
+	enum pcie_link_width width = PCIE_LNK_WIDTH_UNKNOWN;
+	enum pci_bus_speed speed = PCI_SPEED_UNKNOWN;
+
+	if (pcie_get_minimum_link(bp->pdev, &speed, &width) ||
+	    speed == PCI_SPEED_UNKNOWN || width == PCIE_LNK_WIDTH_UNKNOWN)
+		netdev_info(bp->dev, "Failed to determine PCIe Link Info\n");
+	else
+		netdev_info(bp->dev, "PCIe: Speed %s Width x%d\n",
+			    speed == PCIE_SPEED_2_5GT ? "2.5GT/s" :
+			    speed == PCIE_SPEED_5_0GT ? "5.0GT/s" :
+			    speed == PCIE_SPEED_8_0GT ? "8.0GT/s" :
+			    "Unknown", width);
+}
+
 static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	static int version_printed;
@@ -6318,6 +6334,8 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		    board_info[ent->driver_data].name,
 		    (long)pci_resource_start(pdev, 0), dev->dev_addr);
 
+	bnxt_parse_log_pcie_link(bp);
+
 	return 0;
 
 init_err:
-- 
1.8.3.1

[PATCH net-next 4/9] bnxt_en: Reduce maximum ring pages if page size is 64K.

[Michael Chan]

The chip supports 4K/8K/64K page sizes for the rings and we try to
match it to the CPU PAGE_SIZE.  The current page size limits for the rings
are based on 4K/8K page size. If the page size is 64K, these limits are
too large.  Reduce them appropriately.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 355843b..408bb00 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -425,10 +425,17 @@ struct rx_tpa_end_cmp_ext {
 
 #define MAX_TPA		64
 
+#if (BNXT_PAGE_SHIFT == 16)
+#define MAX_RX_PAGES	1
+#define MAX_RX_AGG_PAGES	4
+#define MAX_TX_PAGES	1
+#define MAX_CP_PAGES	8
+#else
 #define MAX_RX_PAGES	8
 #define MAX_RX_AGG_PAGES	32
 #define MAX_TX_PAGES	8
 #define MAX_CP_PAGES	64
+#endif
 
 #define RX_DESC_CNT (BNXT_PAGE_SIZE / sizeof(struct rx_bd))
 #define TX_DESC_CNT (BNXT_PAGE_SIZE / sizeof(struct tx_bd))
-- 
1.8.3.1

[PATCH net-next 5/9] bnxt_en: Improve the delay logic for firmware response.

[Michael Chan]

The current code has 2 problems:

1. The maximum wait time is not long enough.  It is about 60% of the
duration specified by the firmware.  It is calling usleep_range(600, 800)
for every 1 msec we are supposed to wait.

2. The granularity of the delay is too coarse.  Many simple firmware
commands finish in 25 usec or less.

We fix these 2 issues by multiplying the original 1 msec loop counter by
40 and calling usleep_range(25, 40) for each iteration.

There is also a second delay loop to wait for the last DMA word to
complete.  This delay loop should be a very short 5 usec wait.

This change results in much faster bring-up/down time:

Before the patch:

time ip link set p4p1 up

real    0m0.120s
user    0m0.001s
sys     0m0.009s

After the patch:

time ip link set p4p1 up

real    0m0.030s
user    0m0.000s
sys     0m0.010s

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index ba0c3e5..d33b20f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -2718,7 +2718,7 @@ void bnxt_hwrm_cmd_hdr_init(struct bnxt *bp, void *request, u16 req_type,
 static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 				 int timeout, bool silent)
 {
-	int i, intr_process, rc;
+	int i, intr_process, rc, tmo_count;
 	struct input *req = msg;
 	u32 *data = msg;
 	__le32 *resp_len, *valid;
@@ -2747,11 +2747,12 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 		timeout = DFLT_HWRM_CMD_TIMEOUT;
 
 	i = 0;
+	tmo_count = timeout * 40;
 	if (intr_process) {
 		/* Wait until hwrm response cmpl interrupt is processed */
 		while (bp->hwrm_intr_seq_id != HWRM_SEQ_ID_INVALID &&
-		       i++ < timeout) {
-			usleep_range(600, 800);
+		       i++ < tmo_count) {
+			usleep_range(25, 40);
 		}
 
 		if (bp->hwrm_intr_seq_id != HWRM_SEQ_ID_INVALID) {
@@ -2762,15 +2763,15 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 	} else {
 		/* Check if response len is updated */
 		resp_len = bp->hwrm_cmd_resp_addr + HWRM_RESP_LEN_OFFSET;
-		for (i = 0; i < timeout; i++) {
+		for (i = 0; i < tmo_count; i++) {
 			len = (le32_to_cpu(*resp_len) & HWRM_RESP_LEN_MASK) >>
 			      HWRM_RESP_LEN_SFT;
 			if (len)
 				break;
-			usleep_range(600, 800);
+			usleep_range(25, 40);
 		}
 
-		if (i >= timeout) {
+		if (i >= tmo_count) {
 			netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d\n",
 				   timeout, le16_to_cpu(req->req_type),
 				   le16_to_cpu(req->seq_id), *resp_len);
@@ -2779,13 +2780,13 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 
 		/* Last word of resp contains valid bit */
 		valid = bp->hwrm_cmd_resp_addr + len - 4;
-		for (i = 0; i < timeout; i++) {
+		for (i = 0; i < 5; i++) {
 			if (le32_to_cpu(*valid) & HWRM_RESP_VALID_MASK)
 				break;
-			usleep_range(600, 800);
+			udelay(1);
 		}
 
-		if (i >= timeout) {
+		if (i >= 5) {
 			netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d v:%d\n",
 				   timeout, le16_to_cpu(req->req_type),
 				   le16_to_cpu(req->seq_id), len, *valid);
-- 
1.8.3.1

[PATCH net-next 6/9] bnxt_en: Fix length value in dmesg log firmware error message.

[Michael Chan]

The len value in the hwrm error message is wrong.  Use the properly adjusted
value in the variable len.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index d33b20f..0a83fd8 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -2774,7 +2774,7 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 		if (i >= tmo_count) {
 			netdev_err(bp->dev, "Error (timeout: %d) msg {0x%x 0x%x} len:%d\n",
 				   timeout, le16_to_cpu(req->req_type),
-				   le16_to_cpu(req->seq_id), *resp_len);
+				   le16_to_cpu(req->seq_id), len);
 			return -1;
 		}
 
-- 
1.8.3.1

[PATCH net-next 7/9] bnxt_en: Simplify and improve unsupported SFP+ module reporting.

[Michael Chan]

The current code is more complicated than necessary and can only report
unsupported SFP+ module if it is plugged in after the device is up.

Rename bnxt_port_module_event() to bnxt_get_port_module_status().  We
already have the current module_status in the link_info structure, so
just check that and report any unsupported SFP+ module status.  Delete
the unnecessary last_port_module_event.  Call this function at the
end of bnxt_open to report unsupported module already plugged in.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 66 ++++++++++++++-----------------
 drivers/net/ethernet/broadcom/bnxt/bnxt.h |  1 -
 2 files changed, 30 insertions(+), 37 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 0a83fd8..6def145 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1263,15 +1263,6 @@ next_rx_no_prod:
 	((data) &				\
 	 HWRM_ASYNC_EVENT_CMPL_PORT_CONN_NOT_ALLOWED_EVENT_DATA1_PORT_ID_MASK)
 
-#define BNXT_EVENT_POLICY_MASK	\
-	HWRM_ASYNC_EVENT_CMPL_PORT_CONN_NOT_ALLOWED_EVENT_DATA1_ENFORCEMENT_POLICY_MASK
-
-#define BNXT_EVENT_POLICY_SFT	\
-	HWRM_ASYNC_EVENT_CMPL_PORT_CONN_NOT_ALLOWED_EVENT_DATA1_ENFORCEMENT_POLICY_SFT
-
-#define BNXT_GET_EVENT_POLICY(data)	\
-	(((data) & BNXT_EVENT_POLICY_MASK) >> BNXT_EVENT_POLICY_SFT)
-
 static int bnxt_async_event_process(struct bnxt *bp,
 				    struct hwrm_async_event_cmpl *cmpl)
 {
@@ -1310,9 +1301,6 @@ static int bnxt_async_event_process(struct bnxt *bp,
 		if (bp->pf.port_id != port_id)
 			break;
 
-		bp->link_info.last_port_module_event =
-			BNXT_GET_EVENT_POLICY(data1);
-
 		set_bit(BNXT_HWRM_PORT_MODULE_SP_EVENT, &bp->sp_event);
 		break;
 	}
@@ -4725,6 +4713,33 @@ static int bnxt_update_link(struct bnxt *bp, bool chng_link_state)
 	return 0;
 }
 
+static void bnxt_get_port_module_status(struct bnxt *bp)
+{
+	struct bnxt_link_info *link_info = &bp->link_info;
+	struct hwrm_port_phy_qcfg_output *resp = &link_info->phy_qcfg_resp;
+	u8 module_status;
+
+	if (bnxt_update_link(bp, true))
+		return;
+
+	module_status = link_info->module_status;
+	switch (module_status) {
+	case PORT_PHY_QCFG_RESP_MODULE_STATUS_DISABLETX:
+	case PORT_PHY_QCFG_RESP_MODULE_STATUS_PWRDOWN:
+	case PORT_PHY_QCFG_RESP_MODULE_STATUS_WARNINGMSG:
+		netdev_warn(bp->dev, "Unqualified SFP+ module detected on port %d\n",
+			    bp->pf.port_id);
+		if (bp->hwrm_spec_code >= 0x10201) {
+			netdev_warn(bp->dev, "Module part number %s\n",
+				    resp->phy_vendor_partnumber);
+		}
+		if (module_status == PORT_PHY_QCFG_RESP_MODULE_STATUS_DISABLETX)
+			netdev_warn(bp->dev, "TX is disabled\n");
+		if (module_status == PORT_PHY_QCFG_RESP_MODULE_STATUS_PWRDOWN)
+			netdev_warn(bp->dev, "SFP+ module is shutdown\n");
+	}
+}
+
 static void
 bnxt_hwrm_set_pause_common(struct bnxt *bp, struct hwrm_port_phy_cfg_input *req)
 {
@@ -5017,7 +5032,8 @@ static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init)
 	/* Enable TX queues */
 	bnxt_tx_enable(bp);
 	mod_timer(&bp->timer, jiffies + bp->current_interval);
-	bnxt_update_link(bp, true);
+	/* Poll link status and check for SFP+ module status */
+	bnxt_get_port_module_status(bp);
 
 	return 0;
 
@@ -5552,28 +5568,6 @@ bnxt_restart_timer:
 	mod_timer(&bp->timer, jiffies + bp->current_interval);
 }
 
-static void bnxt_port_module_event(struct bnxt *bp)
-{
-	struct bnxt_link_info *link_info = &bp->link_info;
-	struct hwrm_port_phy_qcfg_output *resp = &link_info->phy_qcfg_resp;
-
-	if (bnxt_update_link(bp, true))
-		return;
-
-	if (link_info->last_port_module_event != 0) {
-		netdev_warn(bp->dev, "Unqualified SFP+ module detected on port %d\n",
-			    bp->pf.port_id);
-		if (bp->hwrm_spec_code >= 0x10201) {
-			netdev_warn(bp->dev, "Module part number %s\n",
-				    resp->phy_vendor_partnumber);
-		}
-	}
-	if (link_info->last_port_module_event == 1)
-		netdev_warn(bp->dev, "TX is disabled\n");
-	if (link_info->last_port_module_event == 3)
-		netdev_warn(bp->dev, "Shutdown SFP+ module\n");
-}
-
 static void bnxt_cfg_ntp_filters(struct bnxt *);
 
 static void bnxt_sp_task(struct work_struct *work)
@@ -5622,7 +5616,7 @@ static void bnxt_sp_task(struct work_struct *work)
 	}
 
 	if (test_and_clear_bit(BNXT_HWRM_PORT_MODULE_SP_EVENT, &bp->sp_event))
-		bnxt_port_module_event(bp);
+		bnxt_get_port_module_status(bp);
 
 	if (test_and_clear_bit(BNXT_PERIODIC_STATS_SP_EVENT, &bp->sp_event))
 		bnxt_hwrm_port_qstats(bp);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 408bb00..9933e35 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -848,7 +848,6 @@ struct bnxt_link_info {
 	u32			advertising;
 	bool			force_link_chng;
 
-	u8			last_port_module_event;
 	/* a copy of phy_qcfg output used to report link
 	 * info to VF
 	 */
-- 
1.8.3.1

[PATCH net-next 8/9] bnxt_en: Add BCM57314 device ID.

[Michael Chan]

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 6def145..f2ac7da 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -78,6 +78,7 @@ enum board_idx {
 	BCM57402,
 	BCM57404,
 	BCM57406,
+	BCM57314,
 	BCM57304_VF,
 	BCM57404_VF,
 };
@@ -92,6 +93,7 @@ static const struct {
 	{ "Broadcom BCM57402 NetXtreme-E Dual-port 10Gb Ethernet" },
 	{ "Broadcom BCM57404 NetXtreme-E Dual-port 10Gb/25Gb Ethernet" },
 	{ "Broadcom BCM57406 NetXtreme-E Dual-port 10GBase-T Ethernet" },
+	{ "Broadcom BCM57314 NetXtreme-C Dual-port 10Gb/25Gb/40Gb/50Gb Ethernet" },
 	{ "Broadcom BCM57304 NetXtreme-C Ethernet Virtual Function" },
 	{ "Broadcom BCM57404 NetXtreme-E Ethernet Virtual Function" },
 };
@@ -103,6 +105,7 @@ static const struct pci_device_id bnxt_pci_tbl[] = {
 	{ PCI_VDEVICE(BROADCOM, 0x16d0), .driver_data = BCM57402 },
 	{ PCI_VDEVICE(BROADCOM, 0x16d1), .driver_data = BCM57404 },
 	{ PCI_VDEVICE(BROADCOM, 0x16d2), .driver_data = BCM57406 },
+	{ PCI_VDEVICE(BROADCOM, 0x16df), .driver_data = BCM57314 },
 #ifdef CONFIG_BNXT_SRIOV
 	{ PCI_VDEVICE(BROADCOM, 0x16cb), .driver_data = BCM57304_VF },
 	{ PCI_VDEVICE(BROADCOM, 0x16d3), .driver_data = BCM57404_VF },
-- 
1.8.3.1

[PATCH net-next 9/9] bnxt_en: Use dma_rmb() instead of rmb().

[Michael Chan]

Use the weaker but more appropriate dma_rmb() to order the reading of
the completion ring.

Suggested-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index f2ac7da..643c3ec 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1433,7 +1433,7 @@ static int bnxt_poll_work(struct bnxt *bp, struct bnxt_napi *bnapi, int budget)
 		/* The valid test of the entry must be done first before
 		 * reading any further.
 		 */
-		rmb();
+		dma_rmb();
 		if (TX_CMP_TYPE(txcmp) == CMP_TYPE_TX_L2_CMP) {
 			tx_pkts++;
 			/* return full budget so NAPI will complete. */
-- 
1.8.3.1