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openwrt/target/linux/coldfire/patches/010-m5445x_fec.patch

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From c562ab80fe383e6fa49dbe38257421cf37f0e4b3 Mon Sep 17 00:00:00 2001
From: Kurt Mahan <kmahan@freescale.com>
Date: Wed, 31 Oct 2007 17:07:25 -0600
Subject: [PATCH] MCF5445x FEC support.
LTIBName: m5445x-fec
Signed-off-by: Kurt Mahan <kmahan@freescale.com>
---
drivers/net/Kconfig | 8 ++-
drivers/net/fec.c | 207 ++++++++++++++++++++++++++++++++++++++++++++++----
drivers/net/fec.h | 2 +-
3 files changed, 198 insertions(+), 19 deletions(-)
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -1973,7 +1973,7 @@ config 68360_ENET
config FEC
bool "FEC ethernet controller (of ColdFire CPUs)"
- depends on M523x || M527x || M5272 || M528x || M520x
+ depends on M523x || M527x || M5272 || M528x || M520x || M54455
help
Say Y here if you want to use the built-in 10/100 Fast ethernet
controller on some Motorola ColdFire processors.
@@ -1985,6 +1985,12 @@ config FEC2
Say Y here if you want to use the second built-in 10/100 Fast
ethernet controller on some Motorola ColdFire processors.
+config FEC_SHARED_PHY
+ bool "Shared PHY interface(on some ColdFire designs)"
+ depends on FEC2
+ help
+ Say Y here if both PHYs are controlled via a single channel.
+
config FEC_MPC52xx
tristate "MPC52xx FEC driver"
depends on PPC_MERGE && PPC_MPC52xx && PPC_BESTCOMM_FEC
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -51,7 +51,9 @@
#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || \
defined(CONFIG_M5272) || defined(CONFIG_M528x) || \
- defined(CONFIG_M520x) || defined(CONFIG_M532x)
+ defined(CONFIG_M520x) || defined(CONFIG_M532x) || \
+ defined(CONFIG_M54455)
+
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include "fec.h"
@@ -82,6 +84,11 @@ static unsigned int fec_hw[] = {
(MCF_MBAR+0x30000),
#elif defined(CONFIG_M532x)
(MCF_MBAR+0xfc030000),
+#elif defined(CONFIG_M54455)
+ (MCF_MBAR+0xfc030000),
+#if defined(CONFIG_FEC2)
+ (MCF_MBAR+0xfc034000),
+#endif
#else
&(((immap_t *)IMAP_ADDR)->im_cpm.cp_fec),
#endif
@@ -172,7 +179,7 @@ typedef struct {
* account when setting it.
*/
#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
- defined(CONFIG_M520x) || defined(CONFIG_M532x)
+ defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_M54455)
#define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16)
#else
#define OPT_FRAME_SIZE 0
@@ -213,6 +220,7 @@ struct fec_enet_private {
uint phy_speed;
phy_info_t const *phy;
struct work_struct phy_task;
+ volatile fec_t *phy_hwp;
uint sequence_done;
uint mii_phy_task_queued;
@@ -349,7 +357,8 @@ fec_enet_start_xmit(struct sk_buff *skb,
if (bdp->cbd_bufaddr & 0x3) {
unsigned int index;
index = bdp - fep->tx_bd_base;
- memcpy(fep->tx_bounce[index], (void *) bdp->cbd_bufaddr, bdp->cbd_datlen);
+ memcpy(fep->tx_bounce[index],
+ (void *)skb->data, bdp->cbd_datlen);
bdp->cbd_bufaddr = __pa(fep->tx_bounce[index]);
}
@@ -702,7 +711,7 @@ fec_enet_mii(struct net_device *dev)
uint mii_reg;
fep = netdev_priv(dev);
- ep = fep->hwp;
+ ep = fep->phy_hwp;
mii_reg = ep->fec_mii_data;
spin_lock(&fep->lock);
@@ -753,7 +762,7 @@ mii_queue(struct net_device *dev, int re
mii_tail = mip;
} else {
mii_head = mii_tail = mip;
- fep->hwp->fec_mii_data = regval;
+ fep->phy_hwp->fec_mii_data = regval;
}
} else {
retval = 1;
@@ -1151,8 +1160,7 @@ static phy_info_t const phy_info_ks8721b
};
/* ------------------------------------------------------------------------- */
-/* register definitions for the DP83848 */
-
+/* register definitions for the DP83848 and DP83849 */
#define MII_DP8384X_PHYSTST 16 /* PHY Status Register */
static void mii_parse_dp8384x_sr2(uint mii_reg, struct net_device *dev)
@@ -1186,27 +1194,50 @@ static void mii_parse_dp8384x_sr2(uint m
*s |= PHY_STAT_FAULT;
}
+static phy_cmd_t const phy_cmd_dp8384x_ack_int[] = {
+ { mk_mii_end, }
+ };
+
+static phy_cmd_t const phy_cmd_dp8384x_shutdown[] = {
+ { mk_mii_end, }
+ };
+
static phy_info_t phy_info_dp83848= {
- 0x020005c9,
- "DP83848",
+ .id = 0x020005c9,
+ .name = "DP83848",
- (const phy_cmd_t []) { /* config */
+ .config = (const phy_cmd_t []) { /* config */
{ mk_mii_read(MII_REG_CR), mii_parse_cr },
{ mk_mii_read(MII_REG_ANAR), mii_parse_anar },
{ mk_mii_read(MII_DP8384X_PHYSTST), mii_parse_dp8384x_sr2 },
{ mk_mii_end, }
},
- (const phy_cmd_t []) { /* startup - enable interrupts */
+ .startup = (const phy_cmd_t []) { /* startup - enable interrupts */
{ mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
{ mk_mii_read(MII_REG_SR), mii_parse_sr },
{ mk_mii_end, }
},
- (const phy_cmd_t []) { /* ack_int - never happens, no interrupt */
+ .ack_int = phy_cmd_dp8384x_ack_int,
+ .shutdown = phy_cmd_dp8384x_shutdown,
+};
+
+static phy_info_t phy_info_dp83849 = {
+ .id = 0x020005ca,
+ .name = "DP83849",
+
+ .config = (const phy_cmd_t []) { /* config */
+ { mk_mii_read(MII_REG_CR), mii_parse_cr },
+ { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
+ { mk_mii_read(MII_DP8384X_PHYSTST), mii_parse_dp8384x_sr2 },
{ mk_mii_end, }
},
- (const phy_cmd_t []) { /* shutdown */
+ .startup = (const phy_cmd_t []) { /* startup - enable interrupts */
+ { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
+ { mk_mii_read(MII_REG_SR), mii_parse_sr },
{ mk_mii_end, }
},
+ .ack_int = phy_cmd_dp8384x_ack_int,
+ .shutdown = phy_cmd_dp8384x_shutdown,
};
/* ------------------------------------------------------------------------- */
@@ -1218,6 +1249,7 @@ static phy_info_t const * const phy_info
&phy_info_am79c874,
&phy_info_ks8721bl,
&phy_info_dp83848,
+ &phy_info_dp83849,
NULL
};
@@ -1799,6 +1831,138 @@ static void __inline__ fec_uncache(unsig
/* ------------------------------------------------------------------------- */
+#elif defined(CONFIG_M54455)
+/*
+ * Code specific for M54455
+ */
+
+static void __inline__ fec_request_intrs(struct net_device *dev)
+{
+ struct fec_enet_private *fep;
+ int b;
+ static const struct idesc {
+ char *name;
+ unsigned short irq;
+ } *idp, id[] = {
+ { "fec(TXF)", 36 },
+ { "fec(TXB)", 37 },
+ { "fec(TXFIFO)", 38 },
+ { "fec(TXCR)", 39 },
+ { "fec(RXF)", 40 },
+ { "fec(RXB)", 41 },
+ { "fec(MII)", 42 },
+ { "fec(LC)", 43 },
+ { "fec(HBERR)", 44 },
+ { "fec(GRA)", 45 },
+ { "fec(EBERR)", 46 },
+ { "fec(BABT)", 47 },
+ { "fec(BABR)", 48 },
+ { NULL },
+ };
+
+ fep = netdev_priv(dev);
+ b = (fep->index) ? 77 : 64;
+
+ /* Setup interrupt handlers. */
+ for (idp = id; idp->name; idp++) {
+ if (request_irq(b+idp->irq, fec_enet_interrupt, 0,
+ idp->name, dev) != 0)
+ printk(KERN_ERR "FEC: Could not alloc %s IRQ(%d)!\n",
+ idp->name, b+idp->irq);
+ }
+
+ if (fep->index) {
+ /* Configure RMII */
+ MCF_GPIO_PAR_FEC = (MCF_GPIO_PAR_FEC &
+ MCF_GPIO_PAR_FEC_FEC1_MASK) |
+ MCF_GPIO_PAR_FEC_FEC1_RMII_GPIO;
+ } else {
+ /* Configure RMII */
+ MCF_GPIO_PAR_FEC = (MCF_GPIO_PAR_FEC &
+ MCF_GPIO_PAR_FEC_FEC0_MASK) |
+ MCF_GPIO_PAR_FEC_FEC0_RMII_GPIO;
+ }
+
+ /* Set up gpio outputs for MII lines on FEC0 */
+ MCF_GPIO_PAR_FECI2C |= (0 |
+ MCF_GPIO_PAR_FECI2C_MDIO0_MDIO0 |
+ MCF_GPIO_PAR_FECI2C_MDC0_MDC0);
+}
+
+static void __inline__ fec_set_mii(struct net_device *dev,
+ struct fec_enet_private *fep)
+{
+ volatile fec_t *fecp;
+
+ fecp = fep->hwp;
+ fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
+ fecp->fec_x_cntrl = 0x00;
+
+ /*
+ * Set MII speed to 2.5 MHz
+ */
+ fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
+ fecp->fec_mii_speed = fep->phy_speed;
+
+ fec_restart(dev, 0);
+}
+
+static void __inline__ fec_get_mac(struct net_device *dev)
+{
+ struct fec_enet_private *fep = netdev_priv(dev);
+ volatile fec_t *fecp;
+ unsigned char *iap, tmpaddr[ETH_ALEN];
+
+ fecp = fep->hwp;
+
+ if (FEC_FLASHMAC) {
+ /*
+ * Get MAC address from FLASH.
+ * If it is all 1's or 0's, use the default.
+ */
+ iap = FEC_FLASHMAC;
+ if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
+ (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
+ iap = fec_mac_default;
+ if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
+ (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
+ iap = fec_mac_default;
+ } else {
+ *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
+ *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
+ iap = &tmpaddr[0];
+ }
+
+ memcpy(dev->dev_addr, iap, ETH_ALEN);
+
+ /* Adjust MAC if using default MAC address */
+ if (iap == fec_mac_default)
+ dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] +
+ fep->index;
+}
+
+static void __inline__ fec_enable_phy_intr(void)
+{
+}
+
+static void __inline__ fec_disable_phy_intr(void)
+{
+}
+
+static void __inline__ fec_phy_ack_intr(void)
+{
+}
+
+static void __inline__ fec_localhw_setup(void)
+{
+}
+
+static void __inline__ fec_uncache(unsigned long addr)
+{
+}
+
+/* ------------------------------------------------------------------------- */
+
#else
@@ -2305,7 +2469,7 @@ fec_set_mac_address(struct net_device *d
}
-/* Initialize the FEC Ethernet on 860T (or ColdFire 5272).
+/* Initialize the FEC Ethernet.
*/
/*
* XXX: We need to clean up on failure exits here.
@@ -2326,7 +2490,7 @@ int __init fec_enet_init(struct net_devi
/* Allocate memory for buffer descriptors.
*/
- mem_addr = __get_free_page(GFP_KERNEL);
+ mem_addr = __get_free_page(GFP_DMA);
if (mem_addr == 0) {
printk("FEC: allocate descriptor memory failed?\n");
return -ENOMEM;
@@ -2339,6 +2503,11 @@ int __init fec_enet_init(struct net_devi
fep->index = index;
fep->hwp = fecp;
fep->netdev = dev;
+#ifdef CONFIG_FEC_SHARED_PHY
+ fep->phy_hwp = (volatile fec_t *) fec_hw[index & ~1];
+#else
+ fep->phy_hwp = fecp;
+#endif
/* Whack a reset. We should wait for this.
*/
@@ -2375,7 +2544,7 @@ int __init fec_enet_init(struct net_devi
/* Allocate a page.
*/
- mem_addr = __get_free_page(GFP_KERNEL);
+ mem_addr = __get_free_page(GFP_DMA);
/* XXX: missing check for allocation failure */
fec_uncache(mem_addr);
@@ -2400,7 +2569,7 @@ int __init fec_enet_init(struct net_devi
bdp = fep->tx_bd_base;
for (i=0, j=FEC_ENET_TX_FRPPG; i<TX_RING_SIZE; i++) {
if (j >= FEC_ENET_TX_FRPPG) {
- mem_addr = __get_free_page(GFP_KERNEL);
+ mem_addr = __get_free_page(GFP_DMA);
j = 1;
} else {
mem_addr += FEC_ENET_TX_FRSIZE;
@@ -2462,7 +2631,11 @@ int __init fec_enet_init(struct net_devi
* remainder of the interface.
*/
fep->phy_id_done = 0;
+#ifndef CONFIG_FEC_SHARED_PHY
fep->phy_addr = 0;
+#else
+ fep->phy_addr = fep->index;
+#endif
mii_queue(dev, mk_mii_read(MII_REG_PHYIR1), mii_discover_phy);
index++;
--- a/drivers/net/fec.h
+++ b/drivers/net/fec.h
@@ -14,7 +14,7 @@
/****************************************************************************/
#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
- defined(CONFIG_M520x) || defined(CONFIG_M532x)
+ defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_M54455)
/*
* Just figures, Motorola would have to change the offsets for
* registers in the same peripheral device on different models
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