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Diffstat (limited to 'cpu/mpc8xx/fec.c')
-rw-r--r--cpu/mpc8xx/fec.c77
1 files changed, 53 insertions, 24 deletions
diff --git a/cpu/mpc8xx/fec.c b/cpu/mpc8xx/fec.c
index b7603da..6d1b178 100644
--- a/cpu/mpc8xx/fec.c
+++ b/cpu/mpc8xx/fec.c
@@ -60,22 +60,22 @@ static struct ether_fcc_info_s
{
int ether_index;
int fecp_offset;
- int bd_offset;
int phy_addr;
int actual_phy_addr;
+ int initialized;
}
ether_fcc_info[] = {
#if defined(CONFIG_ETHER_ON_FEC1)
{
0,
offsetof(immap_t, im_cpm.cp_fec1),
- CPM_FEC_BASE,
#if defined(CONFIG_FEC1_PHY)
CONFIG_FEC1_PHY,
#else
-1, /* discover */
#endif
-1,
+ 0,
},
#endif
@@ -83,13 +83,13 @@ static struct ether_fcc_info_s
{
1,
offsetof(immap_t, im_cpm.cp_fec2),
- CPM_FEC_BASE + 0x50,
#if defined(CONFIG_FEC2_PHY)
CONFIG_FEC2_PHY,
#else
-1,
#endif
-1,
+ 0,
},
#endif
};
@@ -383,6 +383,11 @@ static void fec_pin_init(int fecidx)
*/
fecp->fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
+#if defined(CONFIG_NETTA) || defined(CONFIG_NETPHONE)
+ /* our PHYs are the limit at 2.5 MHz */
+ fecp->fec_mii_speed <<= 1;
+#endif
+
#if defined(CONFIG_DUET) && defined(WANT_MII)
/* use MDC for MII */
immr->im_ioport.iop_pdpar |= 0x0080;
@@ -695,6 +700,14 @@ static int fec_init (struct eth_device *dev, bd_t * bd)
efis->actual_phy_addr = efis->phy_addr;
}
#if defined(CONFIG_MII) && defined(CONFIG_RMII)
+
+ /* the MII interface is connected to FEC1
+ so for the miiphy_xxx function to work we must
+ call mii_init since fec_halt messes the thing up */
+
+ if (efis->ether_index != 0)
+ mii_init();
+
/*
* adapt the RMII speed to the speed of the phy
*/
@@ -719,25 +732,43 @@ static int fec_init (struct eth_device *dev, bd_t * bd)
/* And last, try to fill Rx Buffer Descriptors */
fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
+ efis->initialized = 1;
+
return 1;
}
static void fec_halt(struct eth_device* dev)
{
-#if 0
- volatile immap_t *immr = (immap_t *)CFG_IMMR;
- immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
-#endif
-}
+ struct ether_fcc_info_s *efis = dev->priv;
+ volatile fec_t *fecp = (volatile fec_t *)(CFG_IMMR + efis->fecp_offset);
+ int i;
-#if 0
-void restart(void)
-{
- volatile immap_t *immr = (immap_t *)CFG_IMMR;
- immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+ /* avoid halt if initialized; mii gets stuck otherwise */
+ if (!efis->initialized)
+ return;
+
+ /* Whack a reset.
+ * A delay is required between a reset of the FEC block and
+ * initialization of other FEC registers because the reset takes
+ * some time to complete. If you don't delay, subsequent writes
+ * to FEC registers might get killed by the reset routine which is
+ * still in progress.
+ */
+
+ fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
+ for (i = 0;
+ (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
+ ++i) {
+ udelay (1);
+ }
+ if (i == FEC_RESET_DELAY) {
+ printf ("FEC_RESET_DELAY timeout\n");
+ return;
+ }
+
+ efis->initialized = 0;
}
-#endif
#if defined(CFG_DISCOVER_PHY) || defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
@@ -781,14 +812,20 @@ mii_send(uint mii_cmd)
{
uint mii_reply;
volatile fec_t *ep;
+ int cnt;
ep = &(((immap_t *)CFG_IMMR)->im_cpm.cp_fec);
ep->fec_mii_data = mii_cmd; /* command to phy */
/* wait for mii complete */
- while (!(ep->fec_ievent & FEC_ENET_MII))
- ; /* spin until done */
+ cnt = 0;
+ while (!(ep->fec_ievent & FEC_ENET_MII)) {
+ if (++cnt > 1000) {
+ printf("mii_send STUCK!\n");
+ break;
+ }
+ }
mii_reply = ep->fec_mii_data; /* result from phy */
ep->fec_ievent = FEC_ENET_MII; /* clear MII complete */
#if 0
@@ -870,8 +907,6 @@ static int mii_discover_phy(struct eth_device *dev)
#if (defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)) && !defined(CONFIG_BITBANGMII)
-static int mii_init_done = 0;
-
/****************************************************************************
* mii_init -- Initialize the MII for MII command without ethernet
* This function is a subset of eth_init
@@ -883,10 +918,6 @@ void mii_init (void)
volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
int i, j;
- if (mii_init_done != 0) {
- return;
- }
-
for (j = 0; j < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); j++) {
/* Whack a reset.
@@ -924,8 +955,6 @@ void mii_init (void)
*/
fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
}
-
- mii_init_done = 1;
}
/*****************************************************************************