diff options
Diffstat (limited to 'drivers/net/fs_enet/mac-fec.c')
| -rw-r--r-- | drivers/net/fs_enet/mac-fec.c | 654 |
1 files changed, 0 insertions, 654 deletions
diff --git a/drivers/net/fs_enet/mac-fec.c b/drivers/net/fs_enet/mac-fec.c deleted file mode 100644 index 2e8f4446969..00000000000 --- a/drivers/net/fs_enet/mac-fec.c +++ /dev/null @@ -1,654 +0,0 @@ -/* - * Freescale Ethernet controllers - * - * Copyright (c) 2005 Intracom S.A. - * by Pantelis Antoniou <panto@intracom.gr> - * - * 2005 (c) MontaVista Software, Inc. - * Vitaly Bordug <vbordug@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. - */ - -#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/platform_device.h> - -#include <asm/irq.h> -#include <asm/uaccess.h> - -#ifdef CONFIG_8xx -#include <asm/8xx_immap.h> -#include <asm/pgtable.h> -#include <asm/mpc8xx.h> -#include <asm/commproc.h> -#endif - -#include "fs_enet.h" - -/*************************************************/ - -#if defined(CONFIG_CPM1) -/* for a CPM1 __raw_xxx's are sufficient */ -#define __fs_out32(addr, x) __raw_writel(x, addr) -#define __fs_out16(addr, x) __raw_writew(x, addr) -#define __fs_in32(addr) __raw_readl(addr) -#define __fs_in16(addr) __raw_readw(addr) -#else -/* for others play it safe */ -#define __fs_out32(addr, x) out_be32(addr, x) -#define __fs_out16(addr, x) out_be16(addr, x) -#define __fs_in32(addr) in_be32(addr) -#define __fs_in16(addr) in_be16(addr) -#endif - -/* write */ -#define FW(_fecp, _reg, _v) __fs_out32(&(_fecp)->fec_ ## _reg, (_v)) - -/* read */ -#define FR(_fecp, _reg) __fs_in32(&(_fecp)->fec_ ## _reg) - -/* set bits */ -#define FS(_fecp, _reg, _v) FW(_fecp, _reg, FR(_fecp, _reg) | (_v)) - -/* clear bits */ -#define FC(_fecp, _reg, _v) FW(_fecp, _reg, FR(_fecp, _reg) & ~(_v)) - - -/* CRC polynomium used by the FEC for the multicast group filtering */ -#define FEC_CRC_POLY 0x04C11DB7 - -#define FEC_MAX_MULTICAST_ADDRS 64 - -/* Interrupt events/masks. -*/ -#define FEC_ENET_HBERR 0x80000000U /* Heartbeat error */ -#define FEC_ENET_BABR 0x40000000U /* Babbling receiver */ -#define FEC_ENET_BABT 0x20000000U /* Babbling transmitter */ -#define FEC_ENET_GRA 0x10000000U /* Graceful stop complete */ -#define FEC_ENET_TXF 0x08000000U /* Full frame transmitted */ -#define FEC_ENET_TXB 0x04000000U /* A buffer was transmitted */ -#define FEC_ENET_RXF 0x02000000U /* Full frame received */ -#define FEC_ENET_RXB 0x01000000U /* A buffer was received */ -#define FEC_ENET_MII 0x00800000U /* MII interrupt */ -#define FEC_ENET_EBERR 0x00400000U /* SDMA bus error */ - -#define FEC_ECNTRL_PINMUX 0x00000004 -#define FEC_ECNTRL_ETHER_EN 0x00000002 -#define FEC_ECNTRL_RESET 0x00000001 - -#define FEC_RCNTRL_BC_REJ 0x00000010 -#define FEC_RCNTRL_PROM 0x00000008 -#define FEC_RCNTRL_MII_MODE 0x00000004 -#define FEC_RCNTRL_DRT 0x00000002 -#define FEC_RCNTRL_LOOP 0x00000001 - -#define FEC_TCNTRL_FDEN 0x00000004 -#define FEC_TCNTRL_HBC 0x00000002 -#define FEC_TCNTRL_GTS 0x00000001 - - -/* Make MII read/write commands for the FEC. -*/ -#define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18)) -#define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | (VAL & 0xffff)) -#define mk_mii_end 0 - -#define FEC_MII_LOOPS 10000 - -/* - * Delay to wait for FEC reset command to complete (in us) - */ -#define FEC_RESET_DELAY 50 - -static int whack_reset(fec_t * fecp) -{ - int i; - - FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET); - for (i = 0; i < FEC_RESET_DELAY; i++) { - if ((FR(fecp, ecntrl) & FEC_ECNTRL_RESET) == 0) - return 0; /* OK */ - udelay(1); - } - - return -1; -} - -static int do_pd_setup(struct fs_enet_private *fep) -{ - struct platform_device *pdev = to_platform_device(fep->dev); - struct resource *r; - - /* Fill out IRQ field */ - fep->interrupt = platform_get_irq_byname(pdev,"interrupt"); - - r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs"); - fep->fec.fecp =(void*)r->start; - - if(fep->fec.fecp == NULL) - return -EINVAL; - - return 0; - -} - -#define FEC_NAPI_RX_EVENT_MSK (FEC_ENET_RXF | FEC_ENET_RXB) -#define FEC_RX_EVENT (FEC_ENET_RXF) -#define FEC_TX_EVENT (FEC_ENET_TXF) -#define FEC_ERR_EVENT_MSK (FEC_ENET_HBERR | FEC_ENET_BABR | \ - FEC_ENET_BABT | FEC_ENET_EBERR) - -static int setup_data(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - - if (do_pd_setup(fep) != 0) - return -EINVAL; - - fep->fec.hthi = 0; - fep->fec.htlo = 0; - - fep->ev_napi_rx = FEC_NAPI_RX_EVENT_MSK; - fep->ev_rx = FEC_RX_EVENT; - fep->ev_tx = FEC_TX_EVENT; - fep->ev_err = FEC_ERR_EVENT_MSK; - - return 0; -} - -static int allocate_bd(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - const struct fs_platform_info *fpi = fep->fpi; - - fep->ring_base = dma_alloc_coherent(fep->dev, - (fpi->tx_ring + fpi->rx_ring) * - sizeof(cbd_t), &fep->ring_mem_addr, - GFP_KERNEL); - if (fep->ring_base == NULL) - return -ENOMEM; - - return 0; -} - -static void free_bd(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - const struct fs_platform_info *fpi = fep->fpi; - - if(fep->ring_base) - dma_free_coherent(fep->dev, (fpi->tx_ring + fpi->rx_ring) - * sizeof(cbd_t), - fep->ring_base, - fep->ring_mem_addr); -} - -static void cleanup_data(struct net_device *dev) -{ - /* nothing */ -} - -static void set_promiscuous_mode(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - - FS(fecp, r_cntrl, FEC_RCNTRL_PROM); -} - -static void set_multicast_start(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - - fep->fec.hthi = 0; - fep->fec.htlo = 0; -} - -static void set_multicast_one(struct net_device *dev, const u8 *mac) -{ - struct fs_enet_private *fep = netdev_priv(dev); - int temp, hash_index, i, j; - u32 crc, csrVal; - u8 byte, msb; - - crc = 0xffffffff; - for (i = 0; i < 6; i++) { - byte = mac[i]; - for (j = 0; j < 8; j++) { - msb = crc >> 31; - crc <<= 1; - if (msb ^ (byte & 0x1)) - crc ^= FEC_CRC_POLY; - byte >>= 1; - } - } - - temp = (crc & 0x3f) >> 1; - hash_index = ((temp & 0x01) << 4) | - ((temp & 0x02) << 2) | - ((temp & 0x04)) | - ((temp & 0x08) >> 2) | - ((temp & 0x10) >> 4); - csrVal = 1 << hash_index; - if (crc & 1) - fep->fec.hthi |= csrVal; - else - fep->fec.htlo |= csrVal; -} - -static void set_multicast_finish(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - - /* if all multi or too many multicasts; just enable all */ - if ((dev->flags & IFF_ALLMULTI) != 0 || - dev->mc_count > FEC_MAX_MULTICAST_ADDRS) { - fep->fec.hthi = 0xffffffffU; - fep->fec.htlo = 0xffffffffU; - } - - FC(fecp, r_cntrl, FEC_RCNTRL_PROM); - FW(fecp, hash_table_high, fep->fec.hthi); - FW(fecp, hash_table_low, fep->fec.htlo); -} - -static void set_multicast_list(struct net_device *dev) -{ - struct dev_mc_list *pmc; - - if ((dev->flags & IFF_PROMISC) == 0) { - set_multicast_start(dev); - for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next) - set_multicast_one(dev, pmc->dmi_addr); - set_multicast_finish(dev); - } else - set_promiscuous_mode(dev); -} - -static void restart(struct net_device *dev) -{ -#ifdef CONFIG_DUET - immap_t *immap = fs_enet_immap; - u32 cptr; -#endif - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - const struct fs_platform_info *fpi = fep->fpi; - dma_addr_t rx_bd_base_phys, tx_bd_base_phys; - int r; - u32 addrhi, addrlo; - - r = whack_reset(fep->fec.fecp); - if (r != 0) - printk(KERN_ERR DRV_MODULE_NAME - ": %s FEC Reset FAILED!\n", dev->name); - - /* - * Set station address. - */ - addrhi = ((u32) dev->dev_addr[0] << 24) | - ((u32) dev->dev_addr[1] << 16) | - ((u32) dev->dev_addr[2] << 8) | - (u32) dev->dev_addr[3]; - addrlo = ((u32) dev->dev_addr[4] << 24) | - ((u32) dev->dev_addr[5] << 16); - FW(fecp, addr_low, addrhi); - FW(fecp, addr_high, addrlo); - - /* - * Reset all multicast. - */ - FW(fecp, hash_table_high, fep->fec.hthi); - FW(fecp, hash_table_low, fep->fec.htlo); - - /* - * Set maximum receive buffer size. - */ - FW(fecp, r_buff_size, PKT_MAXBLR_SIZE); - FW(fecp, r_hash, PKT_MAXBUF_SIZE); - - /* get physical address */ - rx_bd_base_phys = fep->ring_mem_addr; - tx_bd_base_phys = rx_bd_base_phys + sizeof(cbd_t) * fpi->rx_ring; - - /* - * Set receive and transmit descriptor base. - */ - FW(fecp, r_des_start, rx_bd_base_phys); - FW(fecp, x_des_start, tx_bd_base_phys); - - fs_init_bds(dev); - - /* - * Enable big endian and don't care about SDMA FC. - */ - FW(fecp, fun_code, 0x78000000); - - /* - * Set MII speed. - */ - FW(fecp, mii_speed, fep->mii_bus->fec.mii_speed); - - /* - * Clear any outstanding interrupt. - */ - FW(fecp, ievent, 0xffc0); - FW(fecp, ivec, (fep->interrupt / 2) << 29); - - - /* - * adjust to speed (only for DUET & RMII) - */ -#ifdef CONFIG_DUET - if (fpi->use_rmii) { - cptr = in_be32(&immap->im_cpm.cp_cptr); - switch (fs_get_fec_index(fpi->fs_no)) { - case 0: - cptr |= 0x100; - if (fep->speed == 10) - cptr |= 0x0000010; - else if (fep->speed == 100) - cptr &= ~0x0000010; - break; - case 1: - cptr |= 0x80; - if (fep->speed == 10) - cptr |= 0x0000008; - else if (fep->speed == 100) - cptr &= ~0x0000008; - break; - default: - BUG(); /* should never happen */ - break; - } - out_be32(&immap->im_cpm.cp_cptr, cptr); - } -#endif - - FW(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */ - /* - * adjust to duplex mode - */ - if (fep->duplex) { - FC(fecp, r_cntrl, FEC_RCNTRL_DRT); - FS(fecp, x_cntrl, FEC_TCNTRL_FDEN); /* FD enable */ - } else { - FS(fecp, r_cntrl, FEC_RCNTRL_DRT); - FC(fecp, x_cntrl, FEC_TCNTRL_FDEN); /* FD disable */ - } - - /* - * Enable interrupts we wish to service. - */ - FW(fecp, imask, FEC_ENET_TXF | FEC_ENET_TXB | - FEC_ENET_RXF | FEC_ENET_RXB); - - /* - * And last, enable the transmit and receive processing. - */ - FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); - FW(fecp, r_des_active, 0x01000000); -} - -static void stop(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - struct fs_enet_mii_bus *bus = fep->mii_bus; - const struct fs_mii_bus_info *bi = bus->bus_info; - int i; - - if ((FR(fecp, ecntrl) & FEC_ECNTRL_ETHER_EN) == 0) - return; /* already down */ - - FW(fecp, x_cntrl, 0x01); /* Graceful transmit stop */ - for (i = 0; ((FR(fecp, ievent) & 0x10000000) == 0) && - i < FEC_RESET_DELAY; i++) - udelay(1); - - if (i == FEC_RESET_DELAY) - printk(KERN_WARNING DRV_MODULE_NAME - ": %s FEC timeout on graceful transmit stop\n", - dev->name); - /* - * Disable FEC. Let only MII interrupts. - */ - FW(fecp, imask, 0); - FC(fecp, ecntrl, FEC_ECNTRL_ETHER_EN); - - fs_cleanup_bds(dev); - - /* shut down FEC1? that's where the mii bus is */ - if (fep->fec.idx == 0 && bus->refs > 1 && bi->method == fsmii_fec) { - FS(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */ - FS(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); - FW(fecp, ievent, FEC_ENET_MII); - FW(fecp, mii_speed, bus->fec.mii_speed); - } -} - -static void pre_request_irq(struct net_device *dev, int irq) -{ - immap_t *immap = fs_enet_immap; - u32 siel; - - /* SIU interrupt */ - if (irq >= SIU_IRQ0 && irq < SIU_LEVEL7) { - - siel = in_be32(&immap->im_siu_conf.sc_siel); - if ((irq & 1) == 0) - siel |= (0x80000000 >> irq); - else - siel &= ~(0x80000000 >> (irq & ~1)); - out_be32(&immap->im_siu_conf.sc_siel, siel); - } -} - -static void post_free_irq(struct net_device *dev, int irq) -{ - /* nothing */ -} - -static void napi_clear_rx_event(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - - FW(fecp, ievent, FEC_NAPI_RX_EVENT_MSK); -} - -static void napi_enable_rx(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - - FS(fecp, imask, FEC_NAPI_RX_EVENT_MSK); -} - -static void napi_disable_rx(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - - FC(fecp, imask, FEC_NAPI_RX_EVENT_MSK); -} - -static void rx_bd_done(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - - FW(fecp, r_des_active, 0x01000000); -} - -static void tx_kickstart(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - - FW(fecp, x_des_active, 0x01000000); -} - -static u32 get_int_events(struct net_device *dev) -{ - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - - return FR(fecp, ievent) & FR(fecp, imask); -} - -static void clear_int_events(struct net_device *dev, u32 int_events) -{ - struct fs_enet_private *fep = netdev_priv(dev); - fec_t *fecp = fep->fec.fecp; - - FW(fecp, ievent, int_events); -} - -static void ev_error(struct net_device *dev, u32 int_events) -{ - printk(KERN_WARNING DRV_MODULE_NAME - ": %s FEC ERROR(s) 0x%x\n", dev->name, int_events); -} - -int get_regs(struct net_device *dev, void *p, int *sizep) -{ - struct fs_enet_private *fep = netdev_priv(dev); - - if (*sizep < sizeof(fec_t)) - return -EINVAL; - - memcpy_fromio(p, fep->fec.fecp, sizeof(fec_t)); - - return 0; -} - -int get_regs_len(struct net_device *dev) -{ - return sizeof(fec_t); -} - -void tx_restart(struct net_device *dev) -{ - /* nothing */ -} - -/*************************************************************************/ - -const struct fs_ops fs_fec_ops = { - .setup_data = setup_data, - .cleanup_data = cleanup_data, - .set_multicast_list = set_multicast_list, - .restart = restart, - .stop = stop, - .pre_request_irq = pre_request_irq, - .post_free_irq = post_free_irq, - .napi_clear_rx_event = napi_clear_rx_event, - .napi_enable_rx = napi_enable_rx, - .napi_disable_rx = napi_disable_rx, - .rx_bd_done = rx_bd_done, - .tx_kickstart = tx_kickstart, - .get_int_events = get_int_events, - .clear_int_events = clear_int_events, - .ev_error = ev_error, - .get_regs = get_regs, - .get_regs_len = get_regs_len, - .tx_restart = tx_restart, - .allocate_bd = allocate_bd, - .free_bd = free_bd, -}; - -/***********************************************************************/ - -static int mii_read(struct fs_enet_mii_bus *bus, int phy_id, int location) -{ - fec_t *fecp = bus->fec.fecp; - int i, ret = -1; - - if ((FR(fecp, r_cntrl) & FEC_RCNTRL_MII_MODE) == 0) - BUG(); - - /* Add PHY address to register command. */ - FW(fecp, mii_data, (phy_id << 23) | mk_mii_read(location)); - - for (i = 0; i < FEC_MII_LOOPS; i++) - if ((FR(fecp, ievent) & FEC_ENET_MII) != 0) - break; - - if (i < FEC_MII_LOOPS) { - FW(fecp, ievent, FEC_ENET_MII); - ret = FR(fecp, mii_data) & 0xffff; - } - - return ret; -} - -static void mii_write(struct fs_enet_mii_bus *bus, int phy_id, int location, int value) -{ - fec_t *fecp = bus->fec.fecp; - int i; - - /* this must never happen */ - if ((FR(fecp, r_cntrl) & FEC_RCNTRL_MII_MODE) == 0) - BUG(); - - /* Add PHY address to register command. */ - FW(fecp, mii_data, (phy_id << 23) | mk_mii_write(location, value)); - - for (i = 0; i < FEC_MII_LOOPS; i++) - if ((FR(fecp, ievent) & FEC_ENET_MII) != 0) - break; - - if (i < FEC_MII_LOOPS) - FW(fecp, ievent, FEC_ENET_MII); -} - -int fs_mii_fec_init(struct fs_enet_mii_bus *bus) -{ - bd_t *bd = (bd_t *)__res; - const struct fs_mii_bus_info *bi = bus->bus_info; - fec_t *fecp; - - if (bi->id != 0) - return -1; - - bus->fec.fecp = &((immap_t *)fs_enet_immap)->im_cpm.cp_fec; - bus->fec.mii_speed = ((((bd->bi_intfreq + 4999999) / 2500000) / 2) - & 0x3F) << 1; - - fecp = bus->fec.fecp; - - FS(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */ - FS(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); - FW(fecp, ievent, FEC_ENET_MII); - FW(fecp, mii_speed, bus->fec.mii_speed); - - bus->mii_read = mii_read; - bus->mii_write = mii_write; - - return 0; -} |