[PATCH 1/3] fs_enet: core
Pantelis Antoniou
pantelis.antoniou at gmail.com
Tue Aug 23 05:21:48 EST 2005
Hi
This is a snapshot of the work in progress of the new
fs_enet driver. It's aim is to replace all the various
SCC/FCC/FEC drivers for the Freescale PQs.
Don't expect it to work on your board just yet, just take
a look and comment.
This part contains the core driver files.
Regards
Pantelis
-------------- next part --------------
diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -527,6 +527,42 @@ config WINCEPT
endchoice
+menu "Freescale Ethernet driver platform-specific options"
+ depends on FS_ENET
+
+ config MPC8xx_SECOND_ETH
+ bool "Second Ethernet channel"
+ depends on (MPC885ADS || MPC86xADS)
+ default y
+ help
+ This enables support for second Ethernet on MPC885ADS and MPC86xADS boards.
+ The latter will use SCC1, for 885ADS you can select it below.
+
+ choice
+ prompt "Second Ethernet channel"
+ depends on MPC8xx_SECOND_ETH
+ default MPC885ADS_SECOND_ETH_FEC2
+
+ config MPC885ADS_SECOND_ETH_FEC2
+ bool "FEC2"
+ help
+ Enable FEC2 to serve as 2-nd Ethernet channel. Note that SMC2
+ (often 2-nd UART) will not work if this is enabled.
+
+ config MPC885ADS_SECOND_ETH_SCC
+ bool "SCC3"
+ help
+ Enable SCC3 to serve as 2-nd Ethernet channel. Note that SMC2
+ (often 1-nd UART) will not work if this is enabled.
+
+ endchoice
+
+ config MPC885ADS_SCC_ENET_FIXED
+ depends on MPC885ADS_SECOND_ETH_SCC
+ default n
+ bool "Use fixed MII-less mode for SCC Ethernet"
+endmenu
+
choice
prompt "Machine Type"
depends on 6xx || POWER3 || POWER4
@@ -759,6 +795,16 @@ config MPC834x
bool
default y if MPC834x_SYS
+config CPM1
+ bool
+ depends on 8xx
+ default y
+ help
+ The CPM1 (Communications Processor Module) is a coprocessor on
+ embedded CPUs made by Motorola. Selecting this option means that
+ you wish to build a kernel for a machine with a CPM1 coprocessor
+ on it (8xx, 827x, 8560).
+
config CPM2
bool
depends on 8260 || MPC8560 || MPC8555
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -1750,6 +1750,7 @@ config NE_H8300
controller on the Renesas H8/300 processor.
source "drivers/net/fec_8xx/Kconfig"
+source "drivers/net/fs_enet/Kconfig"
endmenu
--- /dev/null
+++ b/include/linux/fs_enet_pd.h
@@ -0,0 +1,136 @@
+/*
+ * Platform information definitions for the
+ * universal Freescale Ethernet driver.
+ *
+ * Copyright (c) 2003 Intracom S.A.
+ * by Pantelis Antoniou <panto at intracom.gr>
+ *
+ * 2005 (c) MontaVista Software, Inc.
+ * Vitaly Bordug <vbordug at ru.mvista.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#ifndef FS_ENET_PD_H
+#define FS_ENET_PD_H
+
+#include <linux/version.h>
+#include <asm/types.h>
+
+#define FS_ENET_NAME "fs_enet"
+
+enum fs_id {
+ fsid_fec1,
+ fsid_fec2,
+ fsid_fcc1,
+ fsid_fcc2,
+ fsid_fcc3,
+ fsid_scc1,
+ fsid_scc2,
+ fsid_scc3,
+ fsid_scc4,
+};
+
+#define FS_MAX_INDEX 9
+
+static inline int fs_get_fec_index(enum fs_id id)
+{
+ if (id >= fsid_fec1 && id <= fsid_fec2)
+ return id - fsid_fec1;
+ return -1;
+}
+
+static inline int fs_get_fcc_index(enum fs_id id)
+{
+ if (id >= fsid_fcc1 && id <= fsid_fcc3)
+ return id - fsid_fcc1;
+ return -1;
+}
+
+static inline int fs_get_scc_index(enum fs_id id)
+{
+ if (id >= fsid_scc1 && id <= fsid_scc4)
+ return id - fsid_scc1;
+ return -1;
+}
+
+enum fs_mii_method {
+ fsmii_fixed,
+ fsmii_fec,
+ fsmii_bitbang,
+};
+
+enum fs_ioport {
+ fsiop_porta,
+ fsiop_portb,
+ fsiop_portc,
+ fsiop_portd,
+ fsiop_porte,
+};
+
+struct fs_mii_bus_info {
+ int method; /* mii method */
+ int id; /* the id of the mii_bus */
+ int disable_aneg; /* if the controller needs to negothiate speed & duplex */
+ int lpa; /* the default board-specific vallues will be applied otherwise */
+
+ union {
+ struct {
+ int duplex;
+ int speed;
+ } fixed;
+
+ struct {
+ /* nothing */
+ } fec;
+
+ struct {
+ /* nothing */
+ } scc;
+
+ struct {
+ int mdio_port; /* port & bit for MDIO */
+ int mdio_bit;
+ int mdc_port; /* port & bit for MDC */
+ int mdc_bit;
+ int delay; /* delay in us */
+ } bitbang;
+ } i;
+};
+
+struct fs_platform_info {
+
+ void(*init_ioports)(void);
+ /* device specific information */
+ int fs_no; /* controller index */
+
+ u32 cp_page; /* CPM page */
+ u32 cp_block; /* CPM sblock */
+
+ u32 clk_trx; /* some stuff for pins & mux configuration*/
+ u32 clk_route;
+ u32 clk_mask;
+
+ u32 mem_offset;
+ u32 dpram_offset;
+ u32 fcc_regs_c;
+
+ u32 device_flags;
+
+ int phy_addr; /* the phy address (-1 no phy) */
+ int phy_irq; /* the phy irq (if it exists) */
+
+ const struct fs_mii_bus_info *bus_info;
+
+ int rx_ring, tx_ring; /* number of buffers on rx */
+ __u8 macaddr[6]; /* mac address */
+ int rx_copybreak; /* limit we copy small frames */
+ int use_napi; /* use NAPI */
+ int napi_weight; /* NAPI weight */
+
+ int use_rmii; /* use RMII mode */
+};
+
+#endif
diff --git a/include/asm-ppc/cpm2.h b/include/asm-ppc/cpm2.h
--- a/include/asm-ppc/cpm2.h
+++ b/include/asm-ppc/cpm2.h
@@ -1088,5 +1088,7 @@ typedef struct im_idma {
#define SCCR_PCIDF_SHIFT 3
+
+#define FCC_PSMR_RMII ((uint)0x00020000) /* Use RMII interface */
#endif /* __CPM2__ */
#endif /* __KERNEL__ */
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -195,3 +195,6 @@ obj-$(CONFIG_IRDA) += irda/
obj-$(CONFIG_ETRAX_ETHERNET) += cris/
obj-$(CONFIG_NETCONSOLE) += netconsole.o
+
+obj-$(CONFIG_FS_ENET) += fs_enet/
+
--- /dev/null
+++ b/drivers/net/fs_enet/Kconfig
@@ -0,0 +1,41 @@
+config FS_ENET
+ tristate "Freescale Ethernet Driver"
+ depends on NET_ETHERNET && (CPM1 || CPM2)
+ select MII
+
+config FS_ENET_HAS_SCC
+ bool "Chip has an SCC usable for ethernet"
+ depends on FS_ENET && (CPM1 || CPM2)
+ default y
+
+config FS_ENET_HAS_FCC
+ bool "Chip has an FCC usable for ethernet"
+ depends on FS_ENET && CPM2
+ default y
+
+config FS_ENET_HAS_FEC
+ bool "Chip has an FEC usable for ethernet"
+ depends on FS_ENET && CPM1
+ default y
+
+config SCC_ENET_8XX_FIXED
+ bool "Fixed method for SCC Ethernet PHY access "
+ depends on FS_ENET && (MPC885ADS || MPC866ADS)
+ default y
+
+choice
+ prompt "Second Ethernet channel"
+ depends on FS_ENET && MPC885ADS
+ default FEC2
+
+config FEC2
+ bool "FEC2"
+ help
+ Use MPC885 Fast rthernet controller 2 to drive Ethernet.
+
+config SCC_ETHERNET
+ bool "SCC3"
+ help
+ Use MPC8xx serial communications controller 3 to drive Ethernet.
+
+endchoice
--- /dev/null
+++ b/drivers/net/fs_enet/Makefile
@@ -0,0 +1,10 @@
+#
+# Makefile for the Freescale Ethernet controllers
+#
+
+obj-$(CONFIG_FS_ENET) += fs_enet.o
+
+obj-$(CONFIG_8xx) += mac-fec.o mac-scc.o
+obj-$(CONFIG_8260) += mac-fcc.o
+
+fs_enet-objs := fs_enet-main.o fs_enet-mii.o mii-bitbang.o mii-fixed.o
--- /dev/null
+++ b/drivers/net/fs_enet/fs_enet-main.c
@@ -0,0 +1,1100 @@
+/*
+ * Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
+ *
+ * Copyright (c) 2003 Intracom S.A.
+ * by Pantelis Antoniou <panto at intracom.gr>
+ *
+ * 2005 (c) MontaVista Software, Inc.
+ * Vitaly Bordug <vbordug at ru.mvista.com>
+ *
+ * Heavily based on original FEC driver by Dan Malek <dan at embeddededge.com>
+ * and modifications by Joakim Tjernlund <joakim.tjernlund at lumentis.se>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/ptrace.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/bitops.h>
+#include <linux/fs.h>
+
+#include <linux/vmalloc.h>
+#include <asm/pgtable.h>
+
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+
+#include "fs_enet.h"
+
+/*************************************************/
+
+static char version[] __devinitdata =
+ DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")" "\n";
+
+MODULE_AUTHOR("Pantelis Antoniou <panto at intracom.gr>");
+MODULE_DESCRIPTION("Freescale Ethernet Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+MODULE_PARM(fs_enet_debug, "i");
+MODULE_PARM_DESC(fs_enet_debug,
+ "Freescale bitmapped debugging message enable value");
+
+int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */
+
+static void fs_set_multicast_list(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ (*fep->ops->set_multicast_list)(dev);
+}
+
+/* common receive function */
+static int fs_enet_rx_common(struct net_device *dev, int *budget)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ const struct fs_platform_info *fpi = fep->fpi;
+ cbd_t *bdp;
+ struct sk_buff *skb, *skbn, *skbt;
+ int received = 0;
+ u16 pkt_len, sc;
+ int curidx;
+ int rx_work_limit = 0; /* pacify gcc */
+
+ if (fpi->use_napi) {
+ rx_work_limit = min(dev->quota, *budget);
+
+ if (!netif_running(dev))
+ return 0;
+ }
+
+ /*
+ * First, grab all of the stats for the incoming packet.
+ * These get messed up if we get called due to a busy condition.
+ */
+ bdp = fep->cur_rx;
+
+ /* clear RX status bits for napi*/
+ if (fpi->use_napi)
+ (*fep->ops->napi_clear_rx_event)(dev);
+
+ while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
+
+ curidx = bdp - fep->rx_bd_base;
+
+ /*
+ * Since we have allocated space to hold a complete frame,
+ * the last indicator should be set.
+ */
+ if ((sc & BD_ENET_RX_LAST) == 0)
+ printk(KERN_WARNING DRV_MODULE_NAME
+ ": %s rcv is not +last\n",
+ dev->name);
+
+ /*
+ * Check for errors.
+ */
+ if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
+ BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
+ fep->stats.rx_errors++;
+ /* Frame too long or too short. */
+ if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
+ fep->stats.rx_length_errors++;
+ /* Frame alignment */
+ if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
+ fep->stats.rx_frame_errors++;
+ /* CRC Error */
+ if (sc & BD_ENET_RX_CR)
+ fep->stats.rx_crc_errors++;
+ /* FIFO overrun */
+ if (sc & BD_ENET_RX_OV)
+ fep->stats.rx_crc_errors++;
+
+ skb = fep->rx_skbuff[curidx];
+
+ dma_unmap_single(fep->dev, skb->data,
+ L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
+ DMA_FROM_DEVICE);
+
+ skbn = skb;
+
+ } else {
+
+ /* napi, got packet but no quota */
+ if (fpi->use_napi && --rx_work_limit < 0)
+ break;
+
+ skb = fep->rx_skbuff[curidx];
+
+ dma_unmap_single(fep->dev, skb->data,
+ L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
+ DMA_FROM_DEVICE);
+
+ /*
+ * Process the incoming frame.
+ */
+ fep->stats.rx_packets++;
+ pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
+ fep->stats.rx_bytes += pkt_len + 4;
+
+ if (pkt_len <= fpi->rx_copybreak) {
+ /* +2 to make IP header L1 cache aligned */
+ skbn = dev_alloc_skb(pkt_len + 2);
+ if (skbn != NULL) {
+ skb_reserve(skbn, 2); /* align IP header */
+ memcpy(skbn->data, skb->data, pkt_len);
+ /* swap */
+ skbt = skb;
+ skb = skbn;
+ skbn = skbt;
+ }
+ } else
+ skbn = dev_alloc_skb(ENET_RX_FRSIZE);
+
+ if (skbn != NULL) {
+ skb->dev = dev;
+ skb_put(skb, pkt_len); /* Make room */
+ skb->protocol = eth_type_trans(skb, dev);
+ received++;
+ if (!fpi->use_napi)
+ netif_rx(skb);
+ else
+ netif_receive_skb(skb);
+ } else {
+ printk(KERN_WARNING DRV_MODULE_NAME
+ ": %s Memory squeeze, dropping packet.\n",
+ dev->name);
+ fep->stats.rx_dropped++;
+ skbn = skb;
+ }
+ }
+
+ fep->rx_skbuff[curidx] = skbn;
+ CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
+ L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
+ DMA_FROM_DEVICE));
+ CBDW_DATLEN(bdp, 0);
+ CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
+
+ /*
+ * Update BD pointer to next entry.
+ */
+ if ((sc & BD_ENET_RX_WRAP) == 0)
+ bdp++;
+ else
+ bdp = fep->rx_bd_base;
+
+ (*fep->ops->rx_bd_done)(dev);
+ }
+
+ fep->cur_rx = bdp;
+
+ if (fpi->use_napi) {
+ dev->quota -= received;
+ *budget -= received;
+
+ if (rx_work_limit < 0)
+ return 1; /* not done */
+
+ /* done */
+ netif_rx_complete(dev);
+
+ (*fep->ops->napi_enable_rx)(dev);
+ }
+
+ return 0;
+}
+
+static void fs_enet_tx(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ cbd_t *bdp;
+ struct sk_buff *skb;
+ int dirtyidx, do_wake, do_restart;
+ u16 sc;
+
+ spin_lock(&fep->lock);
+ bdp = fep->dirty_tx;
+
+ do_wake = do_restart = 0;
+ while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) {
+
+ dirtyidx = bdp - fep->tx_bd_base;
+
+ if (fep->tx_free == fep->tx_ring)
+ break;
+
+ skb = fep->tx_skbuff[dirtyidx];
+
+ /*
+ * Check for errors.
+ */
+ if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
+ BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) {
+
+ if (sc & BD_ENET_TX_HB) /* No heartbeat */
+ fep->stats.tx_heartbeat_errors++;
+ if (sc & BD_ENET_TX_LC) /* Late collision */
+ fep->stats.tx_window_errors++;
+ if (sc & BD_ENET_TX_RL) /* Retrans limit */
+ fep->stats.tx_aborted_errors++;
+ if (sc & BD_ENET_TX_UN) /* Underrun */
+ fep->stats.tx_fifo_errors++;
+ if (sc & BD_ENET_TX_CSL) /* Carrier lost */
+ fep->stats.tx_carrier_errors++;
+
+ if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) {
+ fep->stats.tx_errors++;
+ do_restart = 1;
+ }
+ } else
+ fep->stats.tx_packets++;
+
+ if (sc & BD_ENET_TX_READY)
+ printk(KERN_WARNING DRV_MODULE_NAME
+ ": %s HEY! Enet xmit interrupt and TX_READY.\n",
+ dev->name);
+
+ /*
+ * Deferred means some collisions occurred during transmit,
+ * but we eventually sent the packet OK.
+ */
+ if (sc & BD_ENET_TX_DEF)
+ fep->stats.collisions++;
+
+ /* unmap */
+ dma_unmap_single(fep->dev, skb->data, skb->len, DMA_TO_DEVICE);
+
+ /*
+ * Free the sk buffer associated with this last transmit.
+ */
+ dev_kfree_skb_irq(skb);
+ fep->tx_skbuff[dirtyidx] = NULL;
+
+ /*
+ * Update pointer to next buffer descriptor to be transmitted.
+ */
+ if ((sc & BD_ENET_TX_WRAP) == 0)
+ bdp++;
+ else
+ bdp = fep->tx_bd_base;
+
+ /*
+ * Since we have freed up a buffer, the ring is no longer
+ * full.
+ */
+ if (!fep->tx_free++)
+ do_wake = 1;
+ }
+
+ fep->dirty_tx = bdp;
+
+ if (do_restart)
+ (*fep->ops->tx_restart)(dev);
+
+ spin_unlock(&fep->lock);
+
+ if (do_wake)
+ netif_wake_queue(dev);
+}
+
+/*
+ * The interrupt handler.
+ * This is called from the MPC core interrupt.
+ */
+static irqreturn_t
+fs_enet_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct net_device *dev = dev_id;
+ struct fs_enet_private *fep;
+ const struct fs_platform_info *fpi;
+ u32 int_events;
+ u32 int_clr_events;
+ int nr, napi_ok;
+
+ fep = netdev_priv(dev);
+ fpi = fep->fpi;
+
+ nr = 0;
+ while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) {
+
+ nr++;
+
+ int_clr_events = int_events;
+ if (fpi->use_napi)
+ int_clr_events &= ~fep->ev_napi_rx;
+
+ (*fep->ops->clear_int_events)(dev, int_clr_events);
+
+ if (int_events & fep->ev_err)
+ (*fep->ops->ev_error)(dev, int_events);
+
+ if (int_events & fep->ev_rx) {
+ if (!fpi->use_napi)
+ fs_enet_rx_common(dev, NULL);
+ else {
+ napi_ok = netif_rx_schedule_prep(dev);
+
+ (*fep->ops->napi_disable_rx)(dev);
+ (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx);
+
+ /* NOTE: it is possible for FCCs in NAPI mode */
+ /* to submit an spurious interrupt while in poll */
+ if (napi_ok)
+ __netif_rx_schedule(dev);
+ }
+ }
+
+ if (int_events & fep->ev_tx)
+ fs_enet_tx(dev);
+ }
+
+ if (nr == 0)
+ return IRQ_NONE;
+
+ return IRQ_HANDLED;
+}
+
+void fs_init_bds(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ cbd_t *bdp;
+ struct sk_buff *skb;
+ int i;
+
+ fs_cleanup_bds(dev);
+
+ fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
+ fep->tx_free = fep->tx_ring;
+ fep->cur_rx = fep->rx_bd_base;
+
+ /*
+ * Initialize the receive buffer descriptors.
+ */
+ for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
+ skb = dev_alloc_skb(ENET_RX_FRSIZE);
+ if (skb == NULL) {
+ printk(KERN_WARNING DRV_MODULE_NAME
+ ": %s Memory squeeze, unable to allocate skb\n",
+ dev->name);
+ break;
+ }
+ fep->rx_skbuff[i] = skb;
+ skb->dev = dev;
+ CBDW_BUFADDR(bdp,
+ dma_map_single(fep->dev, skb->data,
+ L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
+ DMA_FROM_DEVICE));
+ CBDW_DATLEN(bdp, 0); /* zero */
+ CBDW_SC(bdp, BD_ENET_RX_EMPTY |
+ ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
+ }
+ /*
+ * if we failed, fillup remainder
+ */
+ for (; i < fep->rx_ring; i++, bdp++) {
+ fep->rx_skbuff[i] = NULL;
+ CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP);
+ }
+
+ /*
+ * ...and the same for transmit.
+ */
+ for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
+ fep->tx_skbuff[i] = NULL;
+ CBDW_BUFADDR(bdp, 0);
+ CBDW_DATLEN(bdp, 0);
+ CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP);
+ }
+}
+
+void fs_cleanup_bds(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ struct sk_buff *skb;
+ int i;
+
+ /*
+ * Reset SKB transmit buffers.
+ */
+ for (i = 0; i < fep->tx_ring; i++) {
+ if ((skb = fep->tx_skbuff[i]) == NULL)
+ continue;
+
+ /* unmap */
+ dma_unmap_single(fep->dev, skb->data, skb->len, DMA_TO_DEVICE);
+
+ fep->tx_skbuff[i] = NULL;
+ dev_kfree_skb(skb);
+ }
+
+ /*
+ * Reset SKB receive buffers
+ */
+ for (i = 0; i < fep->rx_ring; i++) {
+ if ((skb = fep->rx_skbuff[i]) == NULL)
+ continue;
+ fep->rx_skbuff[i] = NULL;
+ dev_kfree_skb(skb);
+ }
+}
+
+/**********************************************************************************/
+
+static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ cbd_t *bdp;
+ int curidx;
+ u16 sc;
+ unsigned long flags;
+
+ spin_lock_irqsave(&fep->tx_lock, flags);
+
+ /*
+ * Fill in a Tx ring entry
+ */
+ bdp = fep->cur_tx;
+
+ if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) {
+ netif_stop_queue(dev);
+ spin_unlock_irqrestore(&fep->tx_lock, flags);
+
+ /*
+ * Ooops. All transmit buffers are full. Bail out.
+ * This should not happen, since the tx queue should be stopped.
+ */
+ printk(KERN_WARNING DRV_MODULE_NAME
+ ": %s tx queue full!.\n", dev->name);
+ return NETDEV_TX_BUSY;
+ }
+
+ curidx = bdp - fep->tx_bd_base;
+ /*
+ * Clear all of the status flags.
+ */
+ CBDC_SC(bdp, BD_ENET_TX_STATS);
+
+ /*
+ * Save skb pointer.
+ */
+ fep->tx_skbuff[curidx] = skb;
+
+ fep->stats.tx_bytes += skb->len;
+
+ /*
+ * Push the data cache so the CPM does not get stale memory data.
+ */
+ CBDW_BUFADDR(bdp, dma_map_single(fep->dev,
+ skb->data, skb->len, DMA_TO_DEVICE));
+ CBDW_DATLEN(bdp, skb->len);
+
+ dev->trans_start = jiffies;
+
+ /*
+ * If this was the last BD in the ring, start at the beginning again.
+ */
+ if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
+ fep->cur_tx++;
+ else
+ fep->cur_tx = fep->tx_bd_base;
+
+ if (!--fep->tx_free)
+ netif_stop_queue(dev);
+
+ /* Trigger transmission start */
+ sc = BD_ENET_TX_READY | BD_ENET_TX_INTR |
+ BD_ENET_TX_LAST | BD_ENET_TX_TC;
+
+ /* note that while FEC does not have this bit
+ * it marks it as available for software use
+ * yay for hw reuse :) */
+ if (skb->len <= 60)
+ sc |= BD_ENET_TX_PAD;
+ CBDS_SC(bdp, sc);
+
+ (*fep->ops->tx_kickstart)(dev);
+
+ spin_unlock_irqrestore(&fep->tx_lock, flags);
+
+ return NETDEV_TX_OK;
+}
+
+static int fs_request_irq(struct net_device *dev, int irq, const char *name,
+ irqreturn_t (*irqf)(int irq, void *dev_id, struct pt_regs *regs))
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ (*fep->ops->pre_request_irq)(dev, irq);
+ return request_irq(irq, irqf, SA_SHIRQ, name, dev);
+}
+
+static void fs_free_irq(struct net_device *dev, int irq)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ free_irq(irq, dev);
+ (*fep->ops->post_free_irq)(dev, irq);
+}
+
+/**********************************************************************************/
+
+/* This interrupt occurs when the PHY detects a link change. */
+static irqreturn_t
+fs_mii_link_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct net_device *dev = dev_id;
+ struct fs_enet_private *fep;
+ const struct fs_platform_info *fpi;
+
+ fep = netdev_priv(dev);
+ fpi = fep->fpi;
+
+ /*
+ * Acknowledge the interrupt if possible. If we have not
+ * found the PHY yet we can't process or acknowledge the
+ * interrupt now. Instead we ignore this interrupt for now,
+ * which we can do since it is edge triggered. It will be
+ * acknowledged later by fs_enet_open().
+ */
+ if (!fep->phy)
+ return IRQ_NONE;
+
+ fs_mii_ack_int(dev);
+ fs_mii_link_status_change_check(dev, 0);
+
+ return IRQ_HANDLED;
+}
+
+static void fs_timeout(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ unsigned long flags;
+
+ fep->stats.tx_errors++;
+
+ if (dev->flags & IFF_UP) {
+ spin_lock_irqsave(&fep->lock, flags);
+ (*fep->ops->stop)(dev);
+ (*fep->ops->restart)(dev);
+ spin_unlock_irqrestore(&fep->lock, flags);
+ }
+
+ netif_schedule(dev);
+}
+
+static int fs_enet_open(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ const struct fs_platform_info *fpi = fep->fpi;
+ int r;
+
+ /* Install our interrupt handler. */
+ r = fs_request_irq(dev, fep->interrupt, "fs_enet-mac", fs_enet_interrupt);
+ if (r != 0) {
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s Could not allocate FEC IRQ!", dev->name);
+ return -EINVAL;
+ }
+
+ /* Install our phy interrupt handler */
+ if (fpi->phy_irq != -1) {
+
+ r = fs_request_irq(dev, fpi->phy_irq, "fs_enet-phy", fs_mii_link_interrupt);
+ if (r != 0) {
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s Could not allocate PHY IRQ!", dev->name);
+ fs_free_irq(dev, fep->interrupt);
+ return -EINVAL;
+ }
+ }
+
+ fs_mii_startup(dev);
+ netif_carrier_off(dev);
+ fs_mii_link_status_change_check(dev, 1);
+
+ return 0;
+}
+
+static int fs_enet_close(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ const struct fs_platform_info *fpi = fep->fpi;
+ unsigned long flags;
+
+ netif_stop_queue(dev);
+ netif_carrier_off(dev);
+ fs_mii_shutdown(dev);
+
+ spin_lock_irqsave(&fep->lock, flags);
+ (*fep->ops->stop)(dev);
+ spin_unlock_irqrestore(&fep->lock, flags);
+
+ /* release any irqs */
+ if (fpi->phy_irq != -1)
+ fs_free_irq(dev, fpi->phy_irq);
+ fs_free_irq(dev, fep->interrupt);
+
+ return 0;
+}
+
+static struct net_device_stats *fs_enet_get_stats(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ return &fep->stats;
+}
+
+/*************************************************************************/
+
+static void fs_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ strcpy(info->driver, DRV_MODULE_NAME);
+ strcpy(info->version, DRV_MODULE_VERSION);
+}
+
+static int fs_get_regs_len(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ return (*fep->ops->get_regs_len)(dev);
+}
+
+static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs,
+ void *p)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ unsigned long flags;
+ int r, len;
+
+ len = regs->len;
+
+ spin_lock_irqsave(&fep->lock, flags);
+ r = (*fep->ops->get_regs)(dev, p, &len);
+ spin_unlock_irqrestore(&fep->lock, flags);
+
+ if (r == 0)
+ regs->version = 0;
+}
+
+static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ unsigned long flags;
+ int rc;
+
+ spin_lock_irqsave(&fep->lock, flags);
+ rc = mii_ethtool_gset(&fep->mii_if, cmd);
+ spin_unlock_irqrestore(&fep->lock, flags);
+
+ return rc;
+}
+
+static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ unsigned long flags;
+ int rc;
+
+ spin_lock_irqsave(&fep->lock, flags);
+ rc = mii_ethtool_sset(&fep->mii_if, cmd);
+ spin_unlock_irqrestore(&fep->lock, flags);
+
+ return rc;
+}
+
+static int fs_nway_reset(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ return mii_nway_restart(&fep->mii_if);
+}
+
+static u32 fs_get_msglevel(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ return fep->msg_enable;
+}
+
+static void fs_set_msglevel(struct net_device *dev, u32 value)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ fep->msg_enable = value;
+}
+
+static struct ethtool_ops fs_ethtool_ops = {
+ .get_drvinfo = fs_get_drvinfo,
+ .get_regs_len = fs_get_regs_len,
+ .get_settings = fs_get_settings,
+ .set_settings = fs_set_settings,
+ .nway_reset = fs_nway_reset,
+ .get_link = ethtool_op_get_link,
+ .get_msglevel = fs_get_msglevel,
+ .set_msglevel = fs_set_msglevel,
+ .get_tx_csum = ethtool_op_get_tx_csum,
+ .set_tx_csum = ethtool_op_set_tx_csum, /* local! */
+ .get_sg = ethtool_op_get_sg,
+ .set_sg = ethtool_op_set_sg,
+ .get_regs = fs_get_regs,
+};
+
+static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data;
+ unsigned long flags;
+ int rc;
+
+ if (!netif_running(dev))
+ return -EINVAL;
+
+ spin_lock_irqsave(&fep->lock, flags);
+ rc = generic_mii_ioctl(&fep->mii_if, mii, cmd, NULL);
+ spin_unlock_irqrestore(&fep->lock, flags);
+ return rc;
+}
+
+extern int fs_mii_connect(struct net_device *dev);
+extern void fs_mii_disconnect(struct net_device *dev);
+
+static struct net_device *fs_init_instance(struct device *dev,
+ const struct fs_platform_info *fpi)
+{
+ struct net_device *ndev = NULL;
+ struct fs_enet_private *fep = NULL;
+ int privsize, i, r, err = 0, registered = 0;
+
+ /* guard */
+ if ((unsigned int)fpi->fs_no >= FS_MAX_INDEX)
+ return ERR_PTR(-EINVAL);
+
+ privsize = sizeof(*fep) + (sizeof(struct sk_buff **) *
+ (fpi->rx_ring + fpi->tx_ring));
+
+ ndev = alloc_etherdev(privsize);
+ if (!ndev) {
+ err = -ENOMEM;
+ goto err;
+ }
+ SET_MODULE_OWNER(ndev);
+
+ fep = netdev_priv(ndev);
+ memset(fep, 0, privsize); /* clear everything */
+
+ fep->dev = dev;
+ dev_set_drvdata(dev, ndev);
+ fep->fpi = fpi;
+ if (fpi->init_ioports)
+ fpi->init_ioports();
+
+#ifdef CONFIG_FS_ENET_HAS_FEC
+ if (fs_get_fec_index(fpi->fs_no) >= 0)
+ fep->ops = &fs_fec_ops;
+#endif
+
+#ifdef CONFIG_FS_ENET_HAS_SCC
+ if (fs_get_scc_index(fpi->fs_no) >=0 )
+ fep->ops = &fs_scc_ops;
+#endif
+
+#ifdef CONFIG_FS_ENET_HAS_FCC
+ if (fs_get_fcc_index(fpi->fs_no) >= 0)
+ fep->ops = &fs_fcc_ops;
+#endif
+
+ if (fep->ops == NULL) {
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s No matching ops found (%d).\n",
+ ndev->name, fpi->fs_no);
+ err = -EINVAL;
+ goto err;
+ }
+
+ r = (*fep->ops->setup_data)(ndev);
+ if (r != 0) {
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s setup_data failed\n",
+ ndev->name);
+ err = r;
+ goto err;
+ }
+
+ /* point rx_skbuff, tx_skbuff */
+ fep->rx_skbuff = (struct sk_buff **)&fep[1];
+ fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
+
+ /* init locks */
+ spin_lock_init(&fep->lock);
+ spin_lock_init(&fep->tx_lock);
+
+ /*
+ * Set the Ethernet address.
+ */
+ for (i = 0; i < 6; i++)
+ ndev->dev_addr[i] = fpi->macaddr[i];
+
+ r = (*fep->ops->allocate_bd)(ndev);
+
+ if (fep->ring_base == NULL) {
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s buffer descriptor alloc failed (%d).\n", ndev->name, r);
+ err = r;
+ goto err;
+ }
+
+ /*
+ * Set receive and transmit descriptor base.
+ */
+ fep->rx_bd_base = fep->ring_base;
+ fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
+
+ /* initialize ring size variables */
+ fep->tx_ring = fpi->tx_ring;
+ fep->rx_ring = fpi->rx_ring;
+
+ /*
+ * The FEC Ethernet specific entries in the device structure.
+ */
+ ndev->open = fs_enet_open;
+ ndev->hard_start_xmit = fs_enet_start_xmit;
+ ndev->tx_timeout = fs_timeout;
+ ndev->watchdog_timeo = 2 * HZ;
+ ndev->stop = fs_enet_close;
+ ndev->get_stats = fs_enet_get_stats;
+ ndev->set_multicast_list = fs_set_multicast_list;
+ if (fpi->use_napi) {
+ ndev->poll = fs_enet_rx_common;
+ ndev->weight = fpi->napi_weight;
+ }
+ ndev->ethtool_ops = &fs_ethtool_ops;
+ ndev->do_ioctl = fs_ioctl;
+
+ init_timer(&fep->phy_timer_list);
+
+ netif_carrier_off(ndev);
+
+ err = register_netdev(ndev);
+ if (err != 0) {
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s register_netdev failed.\n", ndev->name);
+ goto err;
+ }
+ registered = 1;
+
+ err = fs_mii_connect(ndev);
+ if (err != 0) {
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s fs_mii_connect failed.\n", ndev->name);
+ goto err;
+ }
+
+ return ndev;
+
+ err:
+ if (ndev != NULL) {
+
+ if (registered)
+ unregister_netdev(ndev);
+
+ if (fep != NULL) {
+ (*fep->ops->free_bd)(ndev);
+ (*fep->ops->cleanup_data)(ndev);
+ }
+
+ free_netdev(ndev);
+ }
+
+ dev_set_drvdata(dev, NULL);
+
+ return ERR_PTR(err);
+}
+
+static int fs_cleanup_instance(struct net_device *ndev)
+{
+ struct fs_enet_private *fep;
+ const struct fs_platform_info *fpi;
+ struct device *dev;
+
+ if (ndev == NULL)
+ return -EINVAL;
+
+ fep = netdev_priv(ndev);
+ if (fep == NULL)
+ return -EINVAL;
+
+ fpi = fep->fpi;
+
+ fs_mii_disconnect(ndev);
+
+ unregister_netdev(ndev);
+
+ dma_free_coherent(fep->dev, (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t),
+ fep->ring_base, fep->ring_mem_addr);
+
+ /* reset it */
+ (*fep->ops->cleanup_data)(ndev);
+
+ dev = fep->dev;
+ if (dev != NULL) {
+ dev_set_drvdata(dev, NULL);
+ fep->dev = NULL;
+ }
+
+ free_netdev(ndev);
+
+ return 0;
+}
+
+/**************************************************************************************/
+
+/* handy pointer to the immap */
+void *fs_enet_immap = NULL;
+
+static int setup_immap(void)
+{
+ phys_addr_t paddr = 0;
+ unsigned long size = 0;
+
+#ifdef CONFIG_CPM1
+ paddr = IMAP_ADDR;
+ size = 0x10000; /* map 64K */
+#endif
+
+#ifdef CONFIG_CPM2
+ paddr = CPM_MAP_ADDR;
+ size = 0x40000; /* map 256 K */
+#endif
+ fs_enet_immap = ioremap(paddr, size);
+ if (fs_enet_immap == NULL)
+ return -EBADF; /* XXX ahem; maybe just BUG_ON? */
+
+ return 0;
+}
+
+static void cleanup_immap(void)
+{
+ if (fs_enet_immap != NULL) {
+ iounmap(fs_enet_immap);
+ fs_enet_immap = NULL;
+ }
+}
+
+/**************************************************************************************/
+
+static int __devinit fs_enet_probe(struct device *dev)
+{
+ struct net_device *ndev;
+
+ /* no fixup - no device */
+ if (dev->platform_data == NULL) {
+ printk(KERN_INFO "fs_enet: "
+ "probe called with no platform data; "
+ "remove unused devices");
+ return -ENODEV;
+ }
+
+ ndev = fs_init_instance(dev, dev->platform_data);
+ if (IS_ERR(ndev))
+ return PTR_ERR(ndev);
+ return 0;
+}
+
+static int fs_enet_remove(struct device *dev)
+{
+ return fs_cleanup_instance(dev_get_drvdata(dev));
+}
+
+static struct device_driver fs_enet_fec_driver = {
+ .name = "fsl-cpm-fec",
+ .bus = &platform_bus_type,
+ .probe = fs_enet_probe,
+ .remove = fs_enet_remove,
+#ifdef CONFIG_PM
+/* .suspend = fs_enet_suspend, TODO */
+/* .resume = fs_enet_resume, TODO */
+#endif
+};
+
+static struct device_driver fs_enet_scc_driver = {
+ .name = "fsl-cpm-scc",
+ .bus = &platform_bus_type,
+ .probe = fs_enet_probe,
+ .remove = fs_enet_remove,
+#ifdef CONFIG_PM
+/* .suspend = fs_enet_suspend, TODO */
+/* .resume = fs_enet_resume, TODO */
+#endif
+};
+
+static struct device_driver fs_enet_fcc_driver = {
+ .name = "fsl-cpm-fcc",
+ .bus = &platform_bus_type,
+ .probe = fs_enet_probe,
+ .remove = fs_enet_remove,
+#ifdef CONFIG_PM
+/* .suspend = fs_enet_suspend, TODO */
+/* .resume = fs_enet_resume, TODO */
+#endif
+};
+
+static int __init fs_init(void)
+{
+ int r;
+
+ printk(KERN_INFO
+ "%s", version);
+
+ r = setup_immap();
+ if (r != 0)
+ return r;
+ r = driver_register(&fs_enet_fec_driver);
+ if (r != 0)
+ goto err;
+
+ r = driver_register(&fs_enet_fcc_driver);
+ if (r != 0)
+ goto err;
+
+ r = driver_register(&fs_enet_scc_driver);
+ if (r != 0)
+ goto err;
+
+ return 0;
+err:
+ cleanup_immap();
+ return r;
+
+}
+
+static void __exit fs_cleanup(void)
+{
+ driver_unregister(&fs_enet_fec_driver);
+ driver_unregister(&fs_enet_fcc_driver);
+ driver_unregister(&fs_enet_scc_driver);
+ cleanup_immap();
+}
+
+/**************************************************************************************/
+
+module_init(fs_init);
+module_exit(fs_cleanup);
--- /dev/null
+++ b/drivers/net/fs_enet/fs_enet-mii.c
@@ -0,0 +1,522 @@
+/*
+ * Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
+ *
+ * Copyright (c) 2003 Intracom S.A.
+ * by Pantelis Antoniou <panto at intracom.gr>
+ *
+ * 2005 (c) MontaVista Software, Inc.
+ * Vitaly Bordug <vbordug at ru.mvista.com>
+ *
+ * Heavily based on original FEC driver by Dan Malek <dan at embeddededge.com>
+ * and modifications by Joakim Tjernlund <joakim.tjernlund at lumentis.se>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/ptrace.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/bitops.h>
+
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+
+#include "fs_enet.h"
+
+/*************************************************/
+
+/*
+ * Generic PHY support.
+ * Should work for all PHYs, but link change is detected by polling
+ */
+
+static void generic_timer_callback(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *)data;
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ fep->phy_timer_list.expires = jiffies + HZ / 2;
+
+ add_timer(&fep->phy_timer_list);
+
+ fs_mii_link_status_change_check(dev, 0);
+}
+
+static void generic_startup(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ fep->phy_timer_list.expires = jiffies + HZ / 2; /* every 500ms */
+ fep->phy_timer_list.data = (unsigned long)dev;
+ fep->phy_timer_list.function = generic_timer_callback;
+ add_timer(&fep->phy_timer_list);
+}
+
+static void generic_shutdown(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ del_timer_sync(&fep->phy_timer_list);
+}
+
+/* ------------------------------------------------------------------------- */
+/* The Davicom DM9161 is used on the NETTA board */
+
+/* register definitions */
+
+#define MII_DM9161_ANAR 4 /* Aux. Config Register */
+#define MII_DM9161_ACR 16 /* Aux. Config Register */
+#define MII_DM9161_ACSR 17 /* Aux. Config/Status Register */
+#define MII_DM9161_10TCSR 18 /* 10BaseT Config/Status Reg. */
+#define MII_DM9161_INTR 21 /* Interrupt Register */
+#define MII_DM9161_RECR 22 /* Receive Error Counter Reg. */
+#define MII_DM9161_DISCR 23 /* Disconnect Counter Register */
+
+static void dm9161_startup(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ fs_mii_write(dev, fep->mii_if.phy_id, MII_DM9161_INTR, 0x0000);
+ /* Start autonegotiation */
+ fs_mii_write(dev, fep->mii_if.phy_id, MII_BMCR, 0x1200);
+
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(HZ*8);
+}
+
+static void dm9161_ack_int(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ fs_mii_read(dev, fep->mii_if.phy_id, MII_DM9161_INTR);
+}
+
+static void dm9161_shutdown(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ fs_mii_write(dev, fep->mii_if.phy_id, MII_DM9161_INTR, 0x0f00);
+}
+
+/**********************************************************************************/
+
+static const struct phy_info phy_info[] = {
+ {
+ .id = 0x00181b88,
+ .name = "DM9161",
+ .startup = dm9161_startup,
+ .ack_int = dm9161_ack_int,
+ .shutdown = dm9161_shutdown,
+ }, {
+ .id = 0,
+ .name = "GENERIC",
+ .startup = generic_startup,
+ .shutdown = generic_shutdown,
+ },
+};
+
+/**********************************************************************************/
+
+static int phy_id_detect(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ const struct fs_platform_info *fpi = fep->fpi;
+ struct fs_enet_mii_bus *bus = fep->mii_bus;
+ int i, r, start, end, phytype, physubtype;
+ const struct phy_info *phy;
+ int phy_hwid, phy_id;
+
+ phy_hwid = -1;
+ fep->phy = NULL;
+
+ /* auto-detect? */
+ if (fpi->phy_addr == -1) {
+ start = 1;
+ end = 32;
+ } else { /* direct */
+ start = fpi->phy_addr;
+ end = start + 1;
+ }
+
+ for (phy_id = start; phy_id < end; phy_id++) {
+ /* skip already used phy addresses on this bus */
+ if (bus->usage_map & (1 << phy_id))
+ continue;
+ r = fs_mii_read(dev, phy_id, MII_PHYSID1);
+ if (r == -1 || (phytype = (r & 0xffff)) == 0xffff)
+ continue;
+ r = fs_mii_read(dev, phy_id, MII_PHYSID2);
+ if (r == -1 || (physubtype = (r & 0xffff)) == 0xffff)
+ continue;
+ phy_hwid = (phytype << 16) | physubtype;
+ if (phy_hwid != -1)
+ break;
+ }
+
+ if (phy_hwid == -1) {
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s No PHY detected! range=0x%02x-0x%02x\n",
+ dev->name, start, end);
+ return -1;
+ }
+
+ for (i = 0, phy = phy_info; i < ARRAY_SIZE(phy_info); i++, phy++)
+ if (phy->id == (phy_hwid >> 4) || phy->id == 0)
+ break;
+
+ if (i >= ARRAY_SIZE(phy_info)) {
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s PHY id 0x%08x is not supported!\n",
+ dev->name, phy_hwid);
+ return -1;
+ }
+
+ fep->phy = phy;
+
+ /* mark this address as used */
+ bus->usage_map |= (1 << phy_id);
+
+ printk(KERN_INFO DRV_MODULE_NAME
+ ": %s Phy @ 0x%x, type %s (0x%08x)%s\n",
+ dev->name, phy_id, fep->phy->name, phy_hwid,
+ fpi->phy_addr == -1 ? " (auto-detected)" : "");
+
+ return phy_id;
+}
+
+void fs_mii_startup(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ if (fep->phy == NULL)
+ return;
+
+ if (fep->phy->startup == NULL)
+ return;
+
+ (*fep->phy->startup) (dev);
+}
+
+void fs_mii_shutdown(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ if (fep->phy == NULL)
+ return;
+
+ if (fep->phy->shutdown == NULL)
+ return;
+
+ (*fep->phy->shutdown) (dev);
+}
+
+void fs_mii_ack_int(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+
+ if (fep->phy == NULL)
+ return;
+
+ if (fep->phy->ack_int == NULL)
+ return;
+
+ (*fep->phy->ack_int) (dev);
+}
+
+#define MII_LINK 0x0001
+#define MII_HALF 0x0002
+#define MII_FULL 0x0004
+#define MII_BASE4 0x0008
+#define MII_10M 0x0010
+#define MII_100M 0x0020
+#define MII_1G 0x0040
+#define MII_10G 0x0080
+
+/* return full mii info at one gulp, with a usable form */
+static unsigned int mii_full_status(struct mii_if_info *mii)
+{
+ unsigned int status;
+ int bmsr, adv, lpa, neg;
+ struct fs_enet_private* fep = netdev_priv(mii->dev);
+
+ /* first, a dummy read, needed to latch some MII phys */
+ (void)mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);
+ bmsr = mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);
+
+ /* no link */
+ if ((bmsr & BMSR_LSTATUS) == 0)
+ return 0;
+
+ status = MII_LINK;
+
+ /* Lets look what ANEG says if it's supported - otherwize we shall
+ take the right values from the platform info*/
+ if(!mii->force_media) {
+ /* autoneg not completed; don't bother */
+ if ((bmsr & BMSR_ANEGCOMPLETE) == 0)
+ return 0;
+
+ adv = (*mii->mdio_read)(mii->dev, mii->phy_id, MII_ADVERTISE);
+ lpa = (*mii->mdio_read)(mii->dev, mii->phy_id, MII_LPA);
+
+ neg = lpa & adv;
+ } else {
+ neg = fep->fpi->bus_info->lpa;
+ }
+
+ if (neg & LPA_100FULL)
+ status |= MII_FULL | MII_100M;
+ else if (neg & LPA_100BASE4)
+ status |= MII_FULL | MII_BASE4 | MII_100M;
+ else if (neg & LPA_100HALF)
+ status |= MII_HALF | MII_100M;
+ else if (neg & LPA_10FULL)
+ status |= MII_FULL | MII_10M;
+ else
+ status |= MII_HALF | MII_10M;
+
+ return status;
+}
+
+void fs_mii_link_status_change_check(struct net_device *dev, int init_media)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ struct mii_if_info *mii = &fep->mii_if;
+ unsigned int mii_status;
+ int ok_to_print, link, duplex, speed;
+ unsigned long flags;
+
+ ok_to_print = netif_msg_link(fep);
+
+ mii_status = mii_full_status(mii);
+
+ if (!init_media && mii_status == fep->last_mii_status)
+ return;
+
+ fep->last_mii_status = mii_status;
+
+ link = !!(mii_status & MII_LINK);
+ duplex = !!(mii_status & MII_FULL);
+ speed = (mii_status & MII_100M) ? 100 : 10;
+
+ if (link == 0) {
+ netif_carrier_off(mii->dev);
+ netif_stop_queue(dev);
+ if (!init_media) {
+ spin_lock_irqsave(&fep->lock, flags);
+ (*fep->ops->stop)(dev);
+ spin_unlock_irqrestore(&fep->lock, flags);
+ }
+
+ if (ok_to_print)
+ printk(KERN_INFO "%s: link down\n", mii->dev->name);
+
+ } else {
+
+ mii->full_duplex = duplex;
+
+ netif_carrier_on(mii->dev);
+
+ spin_lock_irqsave(&fep->lock, flags);
+ fep->duplex = duplex;
+ fep->speed = speed;
+ (*fep->ops->restart)(dev);
+ spin_unlock_irqrestore(&fep->lock, flags);
+
+ netif_start_queue(dev);
+
+ if (ok_to_print)
+ printk(KERN_INFO "%s: link up, %dMbps, %s-duplex\n",
+ dev->name, speed, duplex ? "full" : "half");
+ }
+}
+
+/**********************************************************************************/
+
+int fs_mii_read(struct net_device *dev, int phy_id, int location)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ struct fs_enet_mii_bus *bus = fep->mii_bus;
+
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&bus->mii_lock, flags);
+ ret = (*bus->mii_read)(bus, phy_id, location);
+ spin_unlock_irqrestore(&bus->mii_lock, flags);
+
+ return ret;
+}
+
+void fs_mii_write(struct net_device *dev, int phy_id, int location, int value)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ struct fs_enet_mii_bus *bus = fep->mii_bus;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bus->mii_lock, flags);
+ (*bus->mii_write)(bus, phy_id, location, value);
+ spin_unlock_irqrestore(&bus->mii_lock, flags);
+}
+
+/*****************************************************************************/
+
+/* list of all registered mii buses */
+static LIST_HEAD(fs_mii_bus_list);
+
+static struct fs_enet_mii_bus *lookup_bus(int method, int id)
+{
+ struct list_head *ptr;
+ struct fs_enet_mii_bus *bus;
+
+ list_for_each(ptr, &fs_mii_bus_list) {
+ bus = list_entry(ptr, struct fs_enet_mii_bus, list);
+ if (bus->bus_info->method == method &&
+ bus->bus_info->id == id)
+ return bus;
+ }
+ return NULL;
+}
+
+static struct fs_enet_mii_bus *create_bus(const struct fs_mii_bus_info *bi)
+{
+ struct fs_enet_mii_bus *bus;
+ int ret = 0;
+
+ bus = kmalloc(sizeof(*bus), GFP_KERNEL);
+ if (bus == NULL) {
+ ret = -ENOMEM;
+ goto err;
+ }
+ memset(bus, 0, sizeof(*bus));
+ spin_lock_init(&bus->mii_lock);
+ bus->bus_info = bi;
+ bus->refs = 0;
+ bus->usage_map = 0;
+
+ /* perform initialization */
+ switch (bi->method) {
+
+ case fsmii_fixed:
+ ret = fs_mii_fixed_init(bus);
+ if (ret != 0)
+ goto err;
+ break;
+
+ case fsmii_bitbang:
+ ret = fs_mii_bitbang_init(bus);
+ if (ret != 0)
+ goto err;
+ break;
+#ifdef CONFIG_FS_ENET_HAS_FEC
+ case fsmii_fec:
+ ret = fs_mii_fec_init(bus);
+ if (ret != 0)
+ goto err;
+ break;
+#endif
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ list_add(&bus->list, &fs_mii_bus_list);
+
+ return bus;
+
+err:
+ if (bus)
+ kfree(bus);
+ return ERR_PTR(ret);
+}
+
+static void destroy_bus(struct fs_enet_mii_bus *bus)
+{
+ /* remove from bus list */
+ list_del(&bus->list);
+
+ /* nothing more needed */
+ kfree(bus);
+}
+
+int fs_mii_connect(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ const struct fs_platform_info *fpi = fep->fpi;
+ struct fs_enet_mii_bus *bus = NULL;
+
+ /* check method validity */
+ switch (fpi->bus_info->method) {
+ case fsmii_fixed:
+ case fsmii_bitbang:
+ break;
+#ifdef CONFIG_FS_ENET_HAS_FEC
+ case fsmii_fec:
+ break;
+#endif
+ default:
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s Unknown MII bus method (%d)!\n",
+ dev->name, fpi->bus_info->method);
+ return -EINVAL;
+ }
+
+ bus = lookup_bus(fpi->bus_info->method, fpi->bus_info->id);
+
+ /* if not found create new bus */
+ if (bus == NULL) {
+ bus = create_bus(fpi->bus_info);
+ if (IS_ERR(bus)) {
+ printk(KERN_ERR DRV_MODULE_NAME
+ ": %s MII bus creation failure!\n", dev->name);
+ return PTR_ERR(bus);
+ }
+ }
+
+ bus->refs++;
+
+ fep->mii_bus = bus;
+
+ fep->mii_if.dev = dev;
+ fep->mii_if.phy_id_mask = 0x1f;
+ fep->mii_if.reg_num_mask = 0x1f;
+ fep->mii_if.mdio_read = fs_mii_read;
+ fep->mii_if.mdio_write = fs_mii_write;
+ fep->mii_if.force_media = fpi->bus_info->disable_aneg;
+ fep->mii_if.phy_id = phy_id_detect(dev);
+
+ return 0;
+}
+
+void fs_mii_disconnect(struct net_device *dev)
+{
+ struct fs_enet_private *fep = netdev_priv(dev);
+ struct fs_enet_mii_bus *bus = NULL;
+
+ bus = fep->mii_bus;
+ fep->mii_bus = NULL;
+
+ if (--bus->refs <= 0)
+ destroy_bus(bus);
+}
--- /dev/null
+++ b/drivers/net/fs_enet/fs_enet.h
@@ -0,0 +1,269 @@
+#ifndef FS_ENET_H
+#define FS_ENET_H
+
+#include <linux/mii.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/version.h>
+#include <linux/list.h>
+
+#include <linux/fs_enet_pd.h>
+
+#include <asm/dma-mapping.h>
+
+#ifdef CONFIG_CPM1
+#include <asm/commproc.h>
+#endif
+
+#ifdef CONFIG_CPM2
+#include <asm/cpm2.h>
+#endif
+
+/* hw driver ops */
+struct fs_ops {
+ int (*setup_data)(struct net_device *dev);
+ int (*allocate_bd)(struct net_device *dev);
+ void (*free_bd)(struct net_device *dev);
+ void (*cleanup_data)(struct net_device *dev);
+ void (*set_multicast_list)(struct net_device *dev);
+ void (*restart)(struct net_device *dev);
+ void (*stop)(struct net_device *dev);
+ void (*pre_request_irq)(struct net_device *dev, int irq);
+ void (*post_free_irq)(struct net_device *dev, int irq);
+ void (*napi_clear_rx_event)(struct net_device *dev);
+ void (*napi_enable_rx)(struct net_device *dev);
+ void (*napi_disable_rx)(struct net_device *dev);
+ void (*rx_bd_done)(struct net_device *dev);
+ void (*tx_kickstart)(struct net_device *dev);
+ u32 (*get_int_events)(struct net_device *dev);
+ void (*clear_int_events)(struct net_device *dev, u32 int_events);
+ void (*ev_error)(struct net_device *dev, u32 int_events);
+ int (*get_regs)(struct net_device *dev, void *p, int *sizep);
+ int (*get_regs_len)(struct net_device *dev);
+ void (*tx_restart)(struct net_device *dev);
+};
+
+#define MII_ADVERTISE_HALF (ADVERTISE_100HALF | \
+ ADVERTISE_10HALF | ADVERTISE_CSMA)
+#define MII_ADVERTISE_ALL (ADVERTISE_100FULL | \
+ ADVERTISE_10FULL | MII_ADVERTISE_HALF)
+
+/* values for MII phy_status */
+
+#define PHY_CONF_ANE 0x0001 /* 1 auto-negotiation enabled */
+#define PHY_CONF_LOOP 0x0002 /* 1 loopback mode enabled */
+#define PHY_CONF_SPMASK 0x00f0 /* mask for speed */
+#define PHY_CONF_10HDX 0x0010 /* 10 Mbit half duplex supported */
+#define PHY_CONF_10FDX 0x0020 /* 10 Mbit full duplex supported */
+#define PHY_CONF_100HDX 0x0040 /* 100 Mbit half duplex supported */
+#define PHY_CONF_100FDX 0x0080 /* 100 Mbit full duplex supported */
+
+#define PHY_STAT_LINK 0x0100 /* 1 up - 0 down */
+#define PHY_STAT_FAULT 0x0200 /* 1 remote fault */
+#define PHY_STAT_ANC 0x0400 /* 1 auto-negotiation complete */
+#define PHY_STAT_SPMASK 0xf000 /* mask for speed */
+#define PHY_STAT_10HDX 0x1000 /* 10 Mbit half duplex selected */
+#define PHY_STAT_10FDX 0x2000 /* 10 Mbit full duplex selected */
+#define PHY_STAT_100HDX 0x4000 /* 100 Mbit half duplex selected */
+#define PHY_STAT_100FDX 0x8000 /* 100 Mbit full duplex selected */
+
+struct phy_info {
+ unsigned int id;
+ const char *name;
+ void (*startup) (struct net_device * dev);
+ void (*shutdown) (struct net_device * dev);
+ void (*ack_int) (struct net_device * dev);
+};
+
+/* The FEC stores dest/src/type, data, and checksum for receive packets.
+ */
+#define MAX_MTU 1508 /* Allow fullsized pppoe packets over VLAN */
+#define MIN_MTU 46 /* this is data size */
+#define CRC_LEN 4
+
+#define PKT_MAXBUF_SIZE (MAX_MTU+ETH_HLEN+CRC_LEN)
+#define PKT_MINBUF_SIZE (MIN_MTU+ETH_HLEN+CRC_LEN)
+
+/* Must be a multiple of 32 (to cover both FEC & FCC) */
+#define PKT_MAXBLR_SIZE ((PKT_MAXBUF_SIZE + 31) & ~31)
+/* This is needed so that invalidate_xxx wont invalidate too much */
+#define ENET_RX_FRSIZE L1_CACHE_ALIGN(PKT_MAXBUF_SIZE)
+
+struct fs_enet_mii_bus {
+ struct list_head list;
+ spinlock_t mii_lock;
+ const struct fs_mii_bus_info *bus_info;
+ int refs;
+ u32 usage_map;
+
+ int (*mii_read)(struct fs_enet_mii_bus *bus,
+ int phy_id, int location);
+
+ void (*mii_write)(struct fs_enet_mii_bus *bus,
+ int phy_id, int location, int value);
+
+ union {
+ struct {
+ unsigned int mii_speed;
+ void *fecp;
+ } fec;
+
+ struct {
+ /* note that the actual port size may */
+ /* be different; cpm(s) handle it OK */
+ u8 mdio_msk;
+ u8 *mdio_dir;
+ u8 *mdio_dat;
+ u8 mdc_msk;
+ u8 *mdc_dir;
+ u8 *mdc_dat;
+ } bitbang;
+
+ struct {
+ u16 lpa;
+ } fixed;
+ };
+};
+
+int fs_mii_bitbang_init(struct fs_enet_mii_bus *bus);
+int fs_mii_fixed_init(struct fs_enet_mii_bus *bus);
+int fs_mii_fec_init(struct fs_enet_mii_bus *bus);
+
+struct fs_enet_private {
+ struct device *dev; /* pointer back to the device (must be initialized first) */
+ spinlock_t lock; /* during all ops except TX pckt processing */
+ spinlock_t tx_lock; /* during fs_start_xmit and fs_tx */
+ const struct fs_platform_info *fpi;
+ const struct fs_ops *ops;
+ int rx_ring, tx_ring;
+ dma_addr_t ring_mem_addr;
+ void *ring_base;
+ struct sk_buff **rx_skbuff;
+ struct sk_buff **tx_skbuff;
+ cbd_t *rx_bd_base; /* Address of Rx and Tx buffers. */
+ cbd_t *tx_bd_base;
+ cbd_t *dirty_tx; /* ring entries to be free()ed. */
+ cbd_t *cur_rx;
+ cbd_t *cur_tx;
+ int tx_free;
+ struct net_device_stats stats;
+ struct timer_list phy_timer_list;
+ const struct phy_info *phy;
+ u32 msg_enable;
+ struct mii_if_info mii_if;
+ unsigned int last_mii_status;
+ struct fs_enet_mii_bus *mii_bus;
+ int interrupt;
+
+ int duplex, speed; /* current settings */
+
+ /* event masks */
+ u32 ev_napi_rx; /* mask of NAPI rx events */
+ u32 ev_rx; /* rx event mask */
+ u32 ev_tx; /* tx event mask */
+ u32 ev_err; /* error event mask */
+
+ u16 bd_rx_empty; /* mask of BD rx empty */
+ u16 bd_rx_err; /* mask of BD rx errors */
+
+ union {
+ struct {
+ int idx; /* FEC1 = 0, FEC2 = 1 */
+ void *fecp; /* hw registers */
+ u32 hthi, htlo; /* state for multicast */
+ } fec;
+
+ struct {
+ int idx; /* FCC1-3 = 0-2 */
+ void *fccp; /* hw registers */
+ void *ep; /* parameter ram */
+ void *fcccp; /* hw registers cont. */
+ void *mem; /* FCC DPRAM */
+ u32 gaddrh, gaddrl; /* group address */
+ } fcc;
+
+ struct {
+ int idx; /* FEC1 = 0, FEC2 = 1 */
+ void *sccp; /* hw registers */
+ void *ep; /* parameter ram */
+ u32 hthi, htlo; /* state for multicast */
+ } scc;
+
+ };
+};
+
+/***************************************************************************/
+
+int fs_mii_read(struct net_device *dev, int phy_id, int location);
+void fs_mii_write(struct net_device *dev, int phy_id, int location, int value);
+
+void fs_mii_startup(struct net_device *dev);
+void fs_mii_shutdown(struct net_device *dev);
+void fs_mii_ack_int(struct net_device *dev);
+
+void fs_mii_link_status_change_check(struct net_device *dev, int init_media);
+
+void fs_init_bds(struct net_device *dev);
+void fs_cleanup_bds(struct net_device *dev);
+
+/***************************************************************************/
+
+#define DRV_MODULE_NAME "fs_enet"
+#define PFX DRV_MODULE_NAME ": "
+#define DRV_MODULE_VERSION "1.0"
+#define DRV_MODULE_RELDATE "Aug 8, 2005"
+
+/***************************************************************************/
+
+int fs_enet_platform_init(void);
+void fs_enet_platform_cleanup(void);
+
+/***************************************************************************/
+
+/* buffer descriptor access macros */
+
+/* access macros */
+#if defined(CONFIG_CPM1)
+/* for a a CPM1 __raw_xxx's are sufficient */
+#define __cbd_out32(addr, x) __raw_writel(x, addr)
+#define __cbd_out16(addr, x) __raw_writew(x, addr)
+#define __cbd_in32(addr) __raw_readl(addr)
+#define __cbd_in16(addr) __raw_readw(addr)
+#else
+/* for others play it safe */
+#define __cbd_out32(addr, x) out_be32(addr, x)
+#define __cbd_out16(addr, x) out_be16(addr, x)
+#define __cbd_in32(addr) in_be32(addr)
+#define __cbd_in16(addr) in_be16(addr)
+#endif
+
+/* write */
+#define CBDW_SC(_cbd, _sc) __cbd_out16(&(_cbd)->cbd_sc, (_sc))
+#define CBDW_DATLEN(_cbd, _datlen) __cbd_out16(&(_cbd)->cbd_datlen, (_datlen))
+#define CBDW_BUFADDR(_cbd, _bufaddr) __cbd_out32(&(_cbd)->cbd_bufaddr, (_bufaddr))
+
+/* read */
+#define CBDR_SC(_cbd) __cbd_in16(&(_cbd)->cbd_sc)
+#define CBDR_DATLEN(_cbd) __cbd_in16(&(_cbd)->cbd_datlen)
+#define CBDR_BUFADDR(_cbd) __cbd_in32(&(_cbd)->cbd_bufaddr)
+
+/* set bits */
+#define CBDS_SC(_cbd, _sc) CBDW_SC(_cbd, CBDR_SC(_cbd) | (_sc))
+
+/* clear bits */
+#define CBDC_SC(_cbd, _sc) CBDW_SC(_cbd, CBDR_SC(_cbd) & ~(_sc))
+
+/*******************************************************************/
+
+extern const struct fs_ops fs_fec_ops;
+extern const struct fs_ops fs_fcc_ops;
+extern const struct fs_ops fs_scc_ops;
+
+/*******************************************************************/
+
+/* handy pointer to the immap */
+extern void *fs_enet_immap;
+
+/*******************************************************************/
+
+#endif
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