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authorEugene Surovegin <ebs@ebshome.net>2005-10-29 12:43:14 -0700
committerJeff Garzik <jgarzik@pobox.com>2005-10-29 18:06:54 -0400
commit7ad8a89c2e8a930a902cb0622956b27796c027e5 (patch)
treec1241696b8fc5ab55d389f9accd80f399e3d9d86 /drivers/net
parentbe15cd72d256e5eb3261a781b8507fac83ab33f6 (diff)
[PATCH] PPC 44x EMAC driver: add 440SPe support
For some reason, the hardware designers made the polarity of one bit in the 440SPe's PHY interface register the opposite of all other PPC 440 chips. To handle this, abstract our access to this bit and do the right thing based on the configured CPU type. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ibm_emac/ibm_emac.h21
-rw-r--r--drivers/net/ibm_emac/ibm_emac_core.c13
-rw-r--r--drivers/net/ibm_emac/ibm_emac_mal.h3
3 files changed, 29 insertions, 8 deletions
diff --git a/drivers/net/ibm_emac/ibm_emac.h b/drivers/net/ibm_emac/ibm_emac.h
index 28c476f28c2..d3166da753e 100644
--- a/drivers/net/ibm_emac/ibm_emac.h
+++ b/drivers/net/ibm_emac/ibm_emac.h
@@ -26,7 +26,7 @@
/* This is a simple check to prevent use of this driver on non-tested SoCs */
#if !defined(CONFIG_405GP) && !defined(CONFIG_405GPR) && !defined(CONFIG_405EP) && \
!defined(CONFIG_440GP) && !defined(CONFIG_440GX) && !defined(CONFIG_440SP) && \
- !defined(CONFIG_440EP) && !defined(CONFIG_NP405H)
+ !defined(CONFIG_440EP) && !defined(CONFIG_NP405H) && !defined(CONFIG_440SPE)
#error "Unknown SoC. Please, check chip user manual and make sure EMAC defines are OK"
#endif
@@ -246,6 +246,25 @@ struct emac_regs {
#define EMAC_STACR_PCDA_SHIFT 5
#define EMAC_STACR_PRA_MASK 0x1f
+/*
+ * For the 440SPe, AMCC inexplicably changed the polarity of
+ * the "operation complete" bit in the MII control register.
+ */
+#if defined(CONFIG_440SPE)
+static inline int emac_phy_done(u32 stacr)
+{
+ return !(stacr & EMAC_STACR_OC);
+};
+#define EMAC_STACR_START EMAC_STACR_OC
+
+#else /* CONFIG_440SPE */
+static inline int emac_phy_done(u32 stacr)
+{
+ return stacr & EMAC_STACR_OC;
+};
+#define EMAC_STACR_START 0
+#endif /* !CONFIG_440SPE */
+
/* EMACx_TRTR */
#if !defined(CONFIG_IBM_EMAC4)
#define EMAC_TRTR_SHIFT 27
diff --git a/drivers/net/ibm_emac/ibm_emac_core.c b/drivers/net/ibm_emac/ibm_emac_core.c
index 943fbd1546f..48239e17d35 100644
--- a/drivers/net/ibm_emac/ibm_emac_core.c
+++ b/drivers/net/ibm_emac/ibm_emac_core.c
@@ -546,7 +546,7 @@ static int __emac_mdio_read(struct ocp_enet_private *dev, u8 id, u8 reg)
/* Wait for management interface to become idle */
n = 10;
- while (!(in_be32(&p->stacr) & EMAC_STACR_OC)) {
+ while (!emac_phy_done(in_be32(&p->stacr))) {
udelay(1);
if (!--n)
goto to;
@@ -556,11 +556,12 @@ static int __emac_mdio_read(struct ocp_enet_private *dev, u8 id, u8 reg)
out_be32(&p->stacr,
EMAC_STACR_BASE(emac_opb_mhz()) | EMAC_STACR_STAC_READ |
(reg & EMAC_STACR_PRA_MASK)
- | ((id & EMAC_STACR_PCDA_MASK) << EMAC_STACR_PCDA_SHIFT));
+ | ((id & EMAC_STACR_PCDA_MASK) << EMAC_STACR_PCDA_SHIFT)
+ | EMAC_STACR_START);
/* Wait for read to complete */
n = 100;
- while (!((r = in_be32(&p->stacr)) & EMAC_STACR_OC)) {
+ while (!emac_phy_done(r = in_be32(&p->stacr))) {
udelay(1);
if (!--n)
goto to;
@@ -594,7 +595,7 @@ static void __emac_mdio_write(struct ocp_enet_private *dev, u8 id, u8 reg,
/* Wait for management interface to be idle */
n = 10;
- while (!(in_be32(&p->stacr) & EMAC_STACR_OC)) {
+ while (!emac_phy_done(in_be32(&p->stacr))) {
udelay(1);
if (!--n)
goto to;
@@ -605,11 +606,11 @@ static void __emac_mdio_write(struct ocp_enet_private *dev, u8 id, u8 reg,
EMAC_STACR_BASE(emac_opb_mhz()) | EMAC_STACR_STAC_WRITE |
(reg & EMAC_STACR_PRA_MASK) |
((id & EMAC_STACR_PCDA_MASK) << EMAC_STACR_PCDA_SHIFT) |
- (val << EMAC_STACR_PHYD_SHIFT));
+ (val << EMAC_STACR_PHYD_SHIFT) | EMAC_STACR_START);
/* Wait for write to complete */
n = 100;
- while (!(in_be32(&p->stacr) & EMAC_STACR_OC)) {
+ while (!emac_phy_done(in_be32(&p->stacr))) {
udelay(1);
if (!--n)
goto to;
diff --git a/drivers/net/ibm_emac/ibm_emac_mal.h b/drivers/net/ibm_emac/ibm_emac_mal.h
index 15b0bdae26a..fb6dfe1197b 100644
--- a/drivers/net/ibm_emac/ibm_emac_mal.h
+++ b/drivers/net/ibm_emac/ibm_emac_mal.h
@@ -34,7 +34,8 @@
#if defined(CONFIG_405GP) || defined(CONFIG_405GPR) || defined(CONFIG_405EP) || \
defined(CONFIG_440EP) || defined(CONFIG_NP405H)
#define MAL_VERSION 1
-#elif defined(CONFIG_440GP) || defined(CONFIG_440GX) || defined(CONFIG_440SP)
+#elif defined(CONFIG_440GP) || defined(CONFIG_440GX) || defined(CONFIG_440SP) || \
+ defined(CONFIG_440SPE)
#define MAL_VERSION 2
#else
#error "Unknown SoC, please check chip manual and choose MAL 'version'"