IB/ipath: Port config has on-chip effects for 7220

The number of configured ports for the 7220 changes the number of eager
TIDs available per port, for all but port 0 (kernel port) which remains
constant, so add a field to give port0 count separate from the portdata
structure.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/ipath/ipath_file_ops.c

@@ -882,7 +882,7 @@ static int ipath_create_user_egr(struct ipath_portdata *pd)
 
 	egrcnt = dd->ipath_rcvegrcnt;
 	/* TID number offset for this port */
-	egroff = pd->port_port * egrcnt;
+	egroff = (pd->port_port - 1) * egrcnt + dd->ipath_p0_rcvegrcnt;
 	egrsize = dd->ipath_rcvegrbufsize;
 	ipath_cdbg(VERBOSE, "Allocating %d egr buffers, at egrtid "
 		   "offset %x, egrsize %u\n", egrcnt, egroff, egrsize);

drivers/infiniband/hw/ipath/ipath_iba6110.c

@@ -1669,6 +1669,14 @@ static void ipath_ht_free_irq(struct ipath_devdata *dd)
 	dd->ipath_intconfig = 0;
 }
 
+static void ipath_ht_config_ports(struct ipath_devdata *dd, ushort cfgports)
+{
+	dd->ipath_portcnt =
+		ipath_read_kreg32(dd, dd->ipath_kregs->kr_portcnt);
+	dd->ipath_p0_rcvegrcnt =
+		ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvegrcnt);
+}
+
 static void ipath_ht_read_counters(struct ipath_devdata *dd,
 				   struct infinipath_counters *cntrs)
 {
@@ -1798,6 +1806,7 @@ void ipath_init_iba6110_funcs(struct ipath_devdata *dd)
 	dd->ipath_f_setextled = ipath_setup_ht_setextled;
 	dd->ipath_f_get_base_info = ipath_ht_get_base_info;
 	dd->ipath_f_free_irq = ipath_ht_free_irq;
+	dd->ipath_f_config_ports = ipath_ht_config_ports;
 	dd->ipath_f_read_counters = ipath_ht_read_counters;
 
 	/*

drivers/infiniband/hw/ipath/ipath_iba6120.c

@@ -1423,6 +1423,14 @@ static void ipath_pe_free_irq(struct ipath_devdata *dd)
 	dd->ipath_irq = 0;
 }
 
+static void ipath_pe_config_ports(struct ipath_devdata *dd, ushort cfgports)
+{
+	dd->ipath_portcnt =
+		ipath_read_kreg32(dd, dd->ipath_kregs->kr_portcnt);
+	dd->ipath_p0_rcvegrcnt =
+		ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvegrcnt);
+}
+
 static void ipath_pe_read_counters(struct ipath_devdata *dd,
 				   struct infinipath_counters *cntrs)
 {
@@ -1581,6 +1589,7 @@ void ipath_init_iba6120_funcs(struct ipath_devdata *dd)
 
 	/* initialize chip-specific variables */
 	dd->ipath_f_tidtemplate = ipath_pe_tidtemplate;
+	dd->ipath_f_config_ports = ipath_pe_config_ports;
 	dd->ipath_f_read_counters = ipath_pe_read_counters;
 
 	/*

drivers/infiniband/hw/ipath/ipath_init_chip.c

@@ -91,7 +91,7 @@ static int create_port0_egr(struct ipath_devdata *dd)
 	struct ipath_skbinfo *skbinfo;
 	int ret;
 
-	egrcnt = dd->ipath_rcvegrcnt;
+	egrcnt = dd->ipath_p0_rcvegrcnt;
 
 	skbinfo = vmalloc(sizeof(*dd->ipath_port0_skbinfo) * egrcnt);
 	if (skbinfo == NULL) {
@@ -244,8 +244,7 @@ static int init_chip_first(struct ipath_devdata *dd,
 	 * cfgports.  We do still check and report a difference, if
 	 * not same (should be impossible).
 	 */
-	dd->ipath_portcnt =
-		ipath_read_kreg32(dd, dd->ipath_kregs->kr_portcnt);
+	dd->ipath_f_config_ports(dd, ipath_cfgports);
 	if (!ipath_cfgports)
 		dd->ipath_cfgports = dd->ipath_portcnt;
 	else if (ipath_cfgports <= dd->ipath_portcnt) {

drivers/infiniband/hw/ipath/ipath_kernel.h

@@ -253,6 +253,7 @@ struct ipath_devdata {
 	int (*ipath_f_get_base_info)(struct ipath_portdata *, void *);
 	/* free irq */
 	void (*ipath_f_free_irq)(struct ipath_devdata *);
+	void (*ipath_f_config_ports)(struct ipath_devdata *, ushort);
 	void (*ipath_f_read_counters)(struct ipath_devdata *,
 				      struct infinipath_counters *);
 	struct ipath_ibdev *verbs_dev;
@@ -326,6 +327,8 @@ struct ipath_devdata {
 	u32 ipath_cfgports;
 	/* count of port 0 hdrqfull errors */
 	u32 ipath_p0_hdrqfull;
+	/* port 0 number of receive eager buffers */
+	u32 ipath_p0_rcvegrcnt;
 
 	/*
 	 * index of last piobuffer we used.  Speeds up searching, by