cxgb4/cxgbvf: Handle 32-bit fw port capabilities

Implement new 32-bit Firmware Port Capabilities in order to
handle new speeds which couldn't be represented in the old 16-bit
Firmware Port Capabilities values.

Based on the original work of Casey Leedom <leedom@chelsio.com>

Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 54 insertions, 32 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
index b3903fe411aa..9cf9c56b0f73 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
@@ -104,24 +104,62 @@ struct t4vf_port_stats {
 /*
  * Per-"port" (Virtual Interface) link configuration ...
  */
-struct link_config {
-	unsigned int   supported;        /* link capabilities */
-	unsigned int   advertising;      /* advertised capabilities */
-	unsigned short lp_advertising;   /* peer advertised capabilities */
-	unsigned int   requested_speed;  /* speed user has requested */
-	unsigned int   speed;            /* actual link speed */
-	unsigned char  requested_fc;     /* flow control user has requested */
-	unsigned char  fc;               /* actual link flow control */
-	unsigned char  autoneg;          /* autonegotiating? */
-	unsigned char  link_ok;          /* link up? */
+typedef u16 fw_port_cap16_t;    /* 16-bit Port Capabilities integral value */
+typedef u32 fw_port_cap32_t;    /* 32-bit Port Capabilities integral value */
+
+enum fw_caps {
+	FW_CAPS_UNKNOWN	= 0,	/* 0'ed out initial state */
+	FW_CAPS16	= 1,	/* old Firmware: 16-bit Port Capabilities */
+	FW_CAPS32	= 2,	/* new Firmware: 32-bit Port Capabilities */
 };
 
-enum {
-	PAUSE_RX      = 1 << 0,
-	PAUSE_TX      = 1 << 1,
-	PAUSE_AUTONEG = 1 << 2
+enum cc_pause {
+	PAUSE_RX	= 1 << 0,
+	PAUSE_TX	= 1 << 1,
+	PAUSE_AUTONEG	= 1 << 2
+};
+
+enum cc_fec {
+	FEC_AUTO	= 1 << 0,	/* IEEE 802.3 "automatic" */
+	FEC_RS		= 1 << 1,	/* Reed-Solomon */
+	FEC_BASER_RS	= 1 << 2,	/* BaseR/Reed-Solomon */
+};
+
+struct link_config {
+	fw_port_cap32_t pcaps;		/* link capabilities */
+	fw_port_cap32_t	acaps;		/* advertised capabilities */
+	fw_port_cap32_t	lpacaps;	/* peer advertised capabilities */
+
+	fw_port_cap32_t	speed_caps;	/* speed(s) user has requested */
+	u32		speed;		/* actual link speed */
+
+	enum cc_pause	requested_fc;	/* flow control user has requested */
+	enum cc_pause	fc;		/* actual link flow control */
+
+	enum cc_fec	auto_fec;	/* Forward Error Correction: */
+	enum cc_fec	requested_fec;	/*   "automatic" (IEEE 802.3), */
+	enum cc_fec	fec;		/*   requested, and actual in use */
+
+	unsigned char	autoneg;	/* autonegotiating? */
+
+	unsigned char	link_ok;	/* link up? */
+	unsigned char	link_down_rc;	/* link down reason */
 };
 
+/* Return true if the Link Configuration supports "High Speeds" (those greater
+ * than 1Gb/s).
+ */
+static inline bool is_x_10g_port(const struct link_config *lc)
+{
+	fw_port_cap32_t speeds, high_speeds;
+
+	speeds = FW_PORT_CAP32_SPEED_V(FW_PORT_CAP32_SPEED_G(lc->pcaps));
+	high_speeds =
+		speeds & ~(FW_PORT_CAP32_SPEED_100M | FW_PORT_CAP32_SPEED_1G);
+
+	return high_speeds != 0;
+}
+
 /*
  * General device parameters ...
  */
@@ -227,6 +265,7 @@ struct adapter_params {
 	struct arch_specific_params arch; /* chip specific params */
 	enum chip_type chip;		/* chip code */
 	u8 nports;			/* # of Ethernet "ports" */
+	u8 fw_caps_support;		/* 32-bit Port Capabilities */
 };
 
 /* Firmware Mailbox Command/Reply log.  All values are in Host-Endian format.
@@ -266,24 +305,6 @@ static inline struct mbox_cmd *mbox_cmd_log_entry(struct mbox_cmd_log *log,
 #define for_each_port(adapter, iter) \
 	for (iter = 0; iter < (adapter)->params.nports; iter++)
 
-static inline bool is_10g_port(const struct link_config *lc)
-{
-	return (lc->supported & FW_PORT_CAP_SPEED_10G) != 0;
-}
-
-/* Return true if the Link Configuration supports "High Speeds" (those greater
- * than 1Gb/s).
- */
-static inline bool is_x_10g_port(const struct link_config *lc)
-{
-	unsigned int speeds, high_speeds;
-
-	speeds = FW_PORT_CAP_SPEED_V(FW_PORT_CAP_SPEED_G(lc->supported));
-	high_speeds = speeds & ~(FW_PORT_CAP_SPEED_100M | FW_PORT_CAP_SPEED_1G);
-
-	return high_speeds != 0;
-}
-
 static inline unsigned int core_ticks_per_usec(const struct adapter *adapter)
 {
 	return adapter->params.vpd.cclk / 1000;
@@ -387,6 +408,7 @@ int t4vf_iq_free(struct adapter *, unsigned int, unsigned int, unsigned int,
 		 unsigned int);
 int t4vf_eth_eq_free(struct adapter *, unsigned int);
 
+int t4vf_update_port_info(struct port_info *pi);
 int t4vf_handle_fw_rpl(struct adapter *, const __be64 *);
 int t4vf_prep_adapter(struct adapter *);
 int t4vf_get_vf_mac_acl(struct adapter *adapter, unsigned int pf,