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Date: Thu, 24 Apr 2008 21:03:35 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: Matheos.Worku@....COM
Cc: netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] [NIU] Determine the # of ports from the card's VPD
data.
From: Matheos Worku <Matheos.Worku@....COM>
Date: Thu, 24 Apr 2008 12:44:21 -0700
> Thanks a lot for the feedback.
> The board model contains a HW dash version number which changes with HW
> change. Need to ignore the - version number.
> A new patch, using a small function as you suggested is attached.
Thanks for the explanation and the updated patch.
I still had to correct a few trailing-whitespace and coding
style issues, but I took care of them so don't worry about it.
This is the actual patch I commited, thanks again.
niu: Determine the # of ports from the card's VPD data
[ Fix minor whitespace and coding style stuff... -DaveM ]
Signed-off-by: Matheos Worku <matheos.worku@....com>
Signed-off-by: David S. Miller <davem@...emloft.net>
diff --git a/drivers/net/niu.c b/drivers/net/niu.c
index 7565c2d..c7c173c 100644
--- a/drivers/net/niu.c
+++ b/drivers/net/niu.c
@@ -6773,6 +6773,37 @@ static int __devinit niu_phy_type_prop_decode(struct niu *np,
return 0;
}
+/* niu board models have a trailing dash version incremented
+ * with HW rev change. Need to ingnore the dash version while
+ * checking for match
+ *
+ * for example, for the 10G card the current vpd.board_model
+ * is 501-5283-04, of which -04 is the dash version and have
+ * to be ignored
+ */
+static int niu_board_model_match(struct niu *np, const char *model)
+{
+ return !strncmp(np->vpd.board_model, model, strlen(model));
+}
+
+static int niu_pci_vpd_get_nports(struct niu *np)
+{
+ int ports = 0;
+
+ if ((niu_board_model_match(np, NIU_QGC_LP_BM_STR)) ||
+ (niu_board_model_match(np, NIU_QGC_PEM_BM_STR)) ||
+ (niu_board_model_match(np, NIU_ALONSO_BM_STR))) {
+ ports = 4;
+ } else if ((niu_board_model_match(np, NIU_2XGF_LP_BM_STR)) ||
+ (niu_board_model_match(np, NIU_2XGF_PEM_BM_STR)) ||
+ (niu_board_model_match(np, NIU_FOXXY_BM_STR)) ||
+ (niu_board_model_match(np, NIU_2XGF_MRVL_BM_STR))) {
+ ports = 2;
+ }
+
+ return ports;
+}
+
static void __devinit niu_pci_vpd_validate(struct niu *np)
{
struct net_device *dev = np->dev;
@@ -6987,11 +7018,17 @@ static int __devinit niu_get_and_validate_port(struct niu *np)
if (parent->plat_type == PLAT_TYPE_NIU) {
parent->num_ports = 2;
} else {
- parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
- ESPC_NUM_PORTS_MACS_VAL;
-
- if (!parent->num_ports)
- parent->num_ports = 4;
+ parent->num_ports = niu_pci_vpd_get_nports(np);
+ if (!parent->num_ports) {
+ /* Fall back to SPROM as last resort.
+ * This will fail on most cards.
+ */
+ parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
+ ESPC_NUM_PORTS_MACS_VAL;
+
+ if (!parent->num_ports)
+ return -ENODEV;
+ }
}
}
@@ -7733,15 +7770,16 @@ static int __devinit niu_get_invariants(struct niu *np)
have_props = !err;
- err = niu_get_and_validate_port(np);
- if (err)
- return err;
-
err = niu_init_mac_ipp_pcs_base(np);
if (err)
return err;
- if (!have_props) {
+ if (have_props) {
+ err = niu_get_and_validate_port(np);
+ if (err)
+ return err;
+
+ } else {
if (np->parent->plat_type == PLAT_TYPE_NIU)
return -EINVAL;
@@ -7753,10 +7791,17 @@ static int __devinit niu_get_invariants(struct niu *np)
niu_pci_vpd_fetch(np, offset);
nw64(ESPC_PIO_EN, 0);
- if (np->flags & NIU_FLAGS_VPD_VALID)
+ if (np->flags & NIU_FLAGS_VPD_VALID) {
niu_pci_vpd_validate(np);
+ err = niu_get_and_validate_port(np);
+ if (err)
+ return err;
+ }
if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
+ err = niu_get_and_validate_port(np);
+ if (err)
+ return err;
err = niu_pci_probe_sprom(np);
if (err)
return err;
diff --git a/drivers/net/niu.h b/drivers/net/niu.h
index 336aed0..35e9afb 100644
--- a/drivers/net/niu.h
+++ b/drivers/net/niu.h
@@ -2937,6 +2937,15 @@ struct rx_ring_info {
#define NIU_MAX_MTU 9216
+/* VPD strings */
+#define NIU_QGC_LP_BM_STR "501-7606"
+#define NIU_2XGF_LP_BM_STR "501-7283"
+#define NIU_QGC_PEM_BM_STR "501-7765"
+#define NIU_2XGF_PEM_BM_STR "501-7626"
+#define NIU_ALONSO_BM_STR "373-0202"
+#define NIU_FOXXY_BM_STR "501-7961"
+#define NIU_2XGF_MRVL_BM_STR "SK-6E82"
+
#define NIU_VPD_MIN_MAJOR 3
#define NIU_VPD_MIN_MINOR 4
--
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