diff options
Diffstat (limited to 'drivers/net/tulip/media.c')
| -rw-r--r-- | drivers/net/tulip/media.c | 557 |
1 files changed, 0 insertions, 557 deletions
diff --git a/drivers/net/tulip/media.c b/drivers/net/tulip/media.c deleted file mode 100644 index a0c770ee4b6..00000000000 --- a/drivers/net/tulip/media.c +++ /dev/null @@ -1,557 +0,0 @@ -/* - drivers/net/tulip/media.c - - Copyright 2000,2001 The Linux Kernel Team - Written/copyright 1994-2001 by Donald Becker. - - This software may be used and distributed according to the terms - of the GNU General Public License, incorporated herein by reference. - - Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html} - for more information on this driver. - - Please submit bugs to http://bugzilla.kernel.org/ . -*/ - -#include <linux/kernel.h> -#include <linux/mii.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/pci.h> -#include "tulip.h" - - -/* The maximum data clock rate is 2.5 Mhz. The minimum timing is usually - met by back-to-back PCI I/O cycles, but we insert a delay to avoid - "overclocking" issues or future 66Mhz PCI. */ -#define mdio_delay() ioread32(mdio_addr) - -/* Read and write the MII registers using software-generated serial - MDIO protocol. It is just different enough from the EEPROM protocol - to not share code. The maxium data clock rate is 2.5 Mhz. */ -#define MDIO_SHIFT_CLK 0x10000 -#define MDIO_DATA_WRITE0 0x00000 -#define MDIO_DATA_WRITE1 0x20000 -#define MDIO_ENB 0x00000 /* Ignore the 0x02000 databook setting. */ -#define MDIO_ENB_IN 0x40000 -#define MDIO_DATA_READ 0x80000 - -static const unsigned char comet_miireg2offset[32] = { - 0xB4, 0xB8, 0xBC, 0xC0, 0xC4, 0xC8, 0xCC, 0, 0,0,0,0, 0,0,0,0, - 0,0xD0,0,0, 0,0,0,0, 0,0,0,0, 0, 0xD4, 0xD8, 0xDC, }; - - -/* MII transceiver control section. - Read and write the MII registers using software-generated serial - MDIO protocol. - See IEEE 802.3-2002.pdf (Section 2, Chapter "22.2.4 Management functions") - or DP83840A data sheet for more details. - */ - -int tulip_mdio_read(struct net_device *dev, int phy_id, int location) -{ - struct tulip_private *tp = netdev_priv(dev); - int i; - int read_cmd = (0xf6 << 10) | ((phy_id & 0x1f) << 5) | location; - int retval = 0; - void __iomem *ioaddr = tp->base_addr; - void __iomem *mdio_addr = ioaddr + CSR9; - unsigned long flags; - - if (location & ~0x1f) - return 0xffff; - - if (tp->chip_id == COMET && phy_id == 30) { - if (comet_miireg2offset[location]) - return ioread32(ioaddr + comet_miireg2offset[location]); - return 0xffff; - } - - spin_lock_irqsave(&tp->mii_lock, flags); - if (tp->chip_id == LC82C168) { - iowrite32(0x60020000 + (phy_id<<23) + (location<<18), ioaddr + 0xA0); - ioread32(ioaddr + 0xA0); - ioread32(ioaddr + 0xA0); - for (i = 1000; i >= 0; --i) { - barrier(); - if ( ! ((retval = ioread32(ioaddr + 0xA0)) & 0x80000000)) - break; - } - spin_unlock_irqrestore(&tp->mii_lock, flags); - return retval & 0xffff; - } - - /* Establish sync by sending at least 32 logic ones. */ - for (i = 32; i >= 0; i--) { - iowrite32(MDIO_ENB | MDIO_DATA_WRITE1, mdio_addr); - mdio_delay(); - iowrite32(MDIO_ENB | MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr); - mdio_delay(); - } - /* Shift the read command bits out. */ - for (i = 15; i >= 0; i--) { - int dataval = (read_cmd & (1 << i)) ? MDIO_DATA_WRITE1 : 0; - - iowrite32(MDIO_ENB | dataval, mdio_addr); - mdio_delay(); - iowrite32(MDIO_ENB | dataval | MDIO_SHIFT_CLK, mdio_addr); - mdio_delay(); - } - /* Read the two transition, 16 data, and wire-idle bits. */ - for (i = 19; i > 0; i--) { - iowrite32(MDIO_ENB_IN, mdio_addr); - mdio_delay(); - retval = (retval << 1) | ((ioread32(mdio_addr) & MDIO_DATA_READ) ? 1 : 0); - iowrite32(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); - mdio_delay(); - } - - spin_unlock_irqrestore(&tp->mii_lock, flags); - return (retval>>1) & 0xffff; -} - -void tulip_mdio_write(struct net_device *dev, int phy_id, int location, int val) -{ - struct tulip_private *tp = netdev_priv(dev); - int i; - int cmd = (0x5002 << 16) | ((phy_id & 0x1f) << 23) | (location<<18) | (val & 0xffff); - void __iomem *ioaddr = tp->base_addr; - void __iomem *mdio_addr = ioaddr + CSR9; - unsigned long flags; - - if (location & ~0x1f) - return; - - if (tp->chip_id == COMET && phy_id == 30) { - if (comet_miireg2offset[location]) - iowrite32(val, ioaddr + comet_miireg2offset[location]); - return; - } - - spin_lock_irqsave(&tp->mii_lock, flags); - if (tp->chip_id == LC82C168) { - iowrite32(cmd, ioaddr + 0xA0); - for (i = 1000; i >= 0; --i) { - barrier(); - if ( ! (ioread32(ioaddr + 0xA0) & 0x80000000)) - break; - } - spin_unlock_irqrestore(&tp->mii_lock, flags); - return; - } - - /* Establish sync by sending 32 logic ones. */ - for (i = 32; i >= 0; i--) { - iowrite32(MDIO_ENB | MDIO_DATA_WRITE1, mdio_addr); - mdio_delay(); - iowrite32(MDIO_ENB | MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr); - mdio_delay(); - } - /* Shift the command bits out. */ - for (i = 31; i >= 0; i--) { - int dataval = (cmd & (1 << i)) ? MDIO_DATA_WRITE1 : 0; - iowrite32(MDIO_ENB | dataval, mdio_addr); - mdio_delay(); - iowrite32(MDIO_ENB | dataval | MDIO_SHIFT_CLK, mdio_addr); - mdio_delay(); - } - /* Clear out extra bits. */ - for (i = 2; i > 0; i--) { - iowrite32(MDIO_ENB_IN, mdio_addr); - mdio_delay(); - iowrite32(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); - mdio_delay(); - } - - spin_unlock_irqrestore(&tp->mii_lock, flags); -} - - -/* Set up the transceiver control registers for the selected media type. */ -void tulip_select_media(struct net_device *dev, int startup) -{ - struct tulip_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->base_addr; - struct mediatable *mtable = tp->mtable; - u32 new_csr6; - int i; - - if (mtable) { - struct medialeaf *mleaf = &mtable->mleaf[tp->cur_index]; - unsigned char *p = mleaf->leafdata; - switch (mleaf->type) { - case 0: /* 21140 non-MII xcvr. */ - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: Using a 21140 non-MII transceiver with control setting %02x\n", - dev->name, p[1]); - dev->if_port = p[0]; - if (startup) - iowrite32(mtable->csr12dir | 0x100, ioaddr + CSR12); - iowrite32(p[1], ioaddr + CSR12); - new_csr6 = 0x02000000 | ((p[2] & 0x71) << 18); - break; - case 2: case 4: { - u16 setup[5]; - u32 csr13val, csr14val, csr15dir, csr15val; - for (i = 0; i < 5; i++) - setup[i] = get_u16(&p[i*2 + 1]); - - dev->if_port = p[0] & MEDIA_MASK; - if (tulip_media_cap[dev->if_port] & MediaAlwaysFD) - tp->full_duplex = 1; - - if (startup && mtable->has_reset) { - struct medialeaf *rleaf = &mtable->mleaf[mtable->has_reset]; - unsigned char *rst = rleaf->leafdata; - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: Resetting the transceiver\n", - dev->name); - for (i = 0; i < rst[0]; i++) - iowrite32(get_u16(rst + 1 + (i<<1)) << 16, ioaddr + CSR15); - } - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: 21143 non-MII %s transceiver control %04x/%04x\n", - dev->name, medianame[dev->if_port], - setup[0], setup[1]); - if (p[0] & 0x40) { /* SIA (CSR13-15) setup values are provided. */ - csr13val = setup[0]; - csr14val = setup[1]; - csr15dir = (setup[3]<<16) | setup[2]; - csr15val = (setup[4]<<16) | setup[2]; - iowrite32(0, ioaddr + CSR13); - iowrite32(csr14val, ioaddr + CSR14); - iowrite32(csr15dir, ioaddr + CSR15); /* Direction */ - iowrite32(csr15val, ioaddr + CSR15); /* Data */ - iowrite32(csr13val, ioaddr + CSR13); - } else { - csr13val = 1; - csr14val = 0; - csr15dir = (setup[0]<<16) | 0x0008; - csr15val = (setup[1]<<16) | 0x0008; - if (dev->if_port <= 4) - csr14val = t21142_csr14[dev->if_port]; - if (startup) { - iowrite32(0, ioaddr + CSR13); - iowrite32(csr14val, ioaddr + CSR14); - } - iowrite32(csr15dir, ioaddr + CSR15); /* Direction */ - iowrite32(csr15val, ioaddr + CSR15); /* Data */ - if (startup) iowrite32(csr13val, ioaddr + CSR13); - } - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: Setting CSR15 to %08x/%08x\n", - dev->name, csr15dir, csr15val); - if (mleaf->type == 4) - new_csr6 = 0x82020000 | ((setup[2] & 0x71) << 18); - else - new_csr6 = 0x82420000; - break; - } - case 1: case 3: { - int phy_num = p[0]; - int init_length = p[1]; - u16 *misc_info, tmp_info; - - dev->if_port = 11; - new_csr6 = 0x020E0000; - if (mleaf->type == 3) { /* 21142 */ - u16 *init_sequence = (u16*)(p+2); - u16 *reset_sequence = &((u16*)(p+3))[init_length]; - int reset_length = p[2 + init_length*2]; - misc_info = reset_sequence + reset_length; - if (startup) { - int timeout = 10; /* max 1 ms */ - for (i = 0; i < reset_length; i++) - iowrite32(get_u16(&reset_sequence[i]) << 16, ioaddr + CSR15); - - /* flush posted writes */ - ioread32(ioaddr + CSR15); - - /* Sect 3.10.3 in DP83840A.pdf (p39) */ - udelay(500); - - /* Section 4.2 in DP83840A.pdf (p43) */ - /* and IEEE 802.3 "22.2.4.1.1 Reset" */ - while (timeout-- && - (tulip_mdio_read (dev, phy_num, MII_BMCR) & BMCR_RESET)) - udelay(100); - } - for (i = 0; i < init_length; i++) - iowrite32(get_u16(&init_sequence[i]) << 16, ioaddr + CSR15); - - ioread32(ioaddr + CSR15); /* flush posted writes */ - } else { - u8 *init_sequence = p + 2; - u8 *reset_sequence = p + 3 + init_length; - int reset_length = p[2 + init_length]; - misc_info = (u16*)(reset_sequence + reset_length); - if (startup) { - int timeout = 10; /* max 1 ms */ - iowrite32(mtable->csr12dir | 0x100, ioaddr + CSR12); - for (i = 0; i < reset_length; i++) - iowrite32(reset_sequence[i], ioaddr + CSR12); - - /* flush posted writes */ - ioread32(ioaddr + CSR12); - - /* Sect 3.10.3 in DP83840A.pdf (p39) */ - udelay(500); - - /* Section 4.2 in DP83840A.pdf (p43) */ - /* and IEEE 802.3 "22.2.4.1.1 Reset" */ - while (timeout-- && - (tulip_mdio_read (dev, phy_num, MII_BMCR) & BMCR_RESET)) - udelay(100); - } - for (i = 0; i < init_length; i++) - iowrite32(init_sequence[i], ioaddr + CSR12); - - ioread32(ioaddr + CSR12); /* flush posted writes */ - } - - tmp_info = get_u16(&misc_info[1]); - if (tmp_info) - tp->advertising[phy_num] = tmp_info | 1; - if (tmp_info && startup < 2) { - if (tp->mii_advertise == 0) - tp->mii_advertise = tp->advertising[phy_num]; - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: Advertising %04x on MII %d\n", - dev->name, tp->mii_advertise, - tp->phys[phy_num]); - tulip_mdio_write(dev, tp->phys[phy_num], 4, tp->mii_advertise); - } - break; - } - case 5: case 6: { - u16 setup[5]; - - new_csr6 = 0; /* FIXME */ - - for (i = 0; i < 5; i++) - setup[i] = get_u16(&p[i*2 + 1]); - - if (startup && mtable->has_reset) { - struct medialeaf *rleaf = &mtable->mleaf[mtable->has_reset]; - unsigned char *rst = rleaf->leafdata; - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: Resetting the transceiver\n", - dev->name); - for (i = 0; i < rst[0]; i++) - iowrite32(get_u16(rst + 1 + (i<<1)) << 16, ioaddr + CSR15); - } - - break; - } - default: - printk(KERN_DEBUG "%s: Invalid media table selection %d\n", - dev->name, mleaf->type); - new_csr6 = 0x020E0000; - } - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: Using media type %s, CSR12 is %02x\n", - dev->name, medianame[dev->if_port], - ioread32(ioaddr + CSR12) & 0xff); - } else if (tp->chip_id == LC82C168) { - if (startup && ! tp->medialock) - dev->if_port = tp->mii_cnt ? 11 : 0; - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: PNIC PHY status is %3.3x, media %s\n", - dev->name, ioread32(ioaddr + 0xB8), medianame[dev->if_port]); - if (tp->mii_cnt) { - new_csr6 = 0x810C0000; - iowrite32(0x0001, ioaddr + CSR15); - iowrite32(0x0201B07A, ioaddr + 0xB8); - } else if (startup) { - /* Start with 10mbps to do autonegotiation. */ - iowrite32(0x32, ioaddr + CSR12); - new_csr6 = 0x00420000; - iowrite32(0x0001B078, ioaddr + 0xB8); - iowrite32(0x0201B078, ioaddr + 0xB8); - } else if (dev->if_port == 3 || dev->if_port == 5) { - iowrite32(0x33, ioaddr + CSR12); - new_csr6 = 0x01860000; - /* Trigger autonegotiation. */ - iowrite32(startup ? 0x0201F868 : 0x0001F868, ioaddr + 0xB8); - } else { - iowrite32(0x32, ioaddr + CSR12); - new_csr6 = 0x00420000; - iowrite32(0x1F078, ioaddr + 0xB8); - } - } else { /* Unknown chip type with no media table. */ - if (tp->default_port == 0) - dev->if_port = tp->mii_cnt ? 11 : 3; - if (tulip_media_cap[dev->if_port] & MediaIsMII) { - new_csr6 = 0x020E0000; - } else if (tulip_media_cap[dev->if_port] & MediaIsFx) { - new_csr6 = 0x02860000; - } else - new_csr6 = 0x03860000; - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: No media description table, assuming %s transceiver, CSR12 %02x\n", - dev->name, medianame[dev->if_port], - ioread32(ioaddr + CSR12)); - } - - tp->csr6 = new_csr6 | (tp->csr6 & 0xfdff) | (tp->full_duplex ? 0x0200 : 0); - - mdelay(1); -} - -/* - Check the MII negotiated duplex and change the CSR6 setting if - required. - Return 0 if everything is OK. - Return < 0 if the transceiver is missing or has no link beat. - */ -int tulip_check_duplex(struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - unsigned int bmsr, lpa, negotiated, new_csr6; - - bmsr = tulip_mdio_read(dev, tp->phys[0], MII_BMSR); - lpa = tulip_mdio_read(dev, tp->phys[0], MII_LPA); - if (tulip_debug > 1) - dev_info(&dev->dev, "MII status %04x, Link partner report %04x\n", - bmsr, lpa); - if (bmsr == 0xffff) - return -2; - if ((bmsr & BMSR_LSTATUS) == 0) { - int new_bmsr = tulip_mdio_read(dev, tp->phys[0], MII_BMSR); - if ((new_bmsr & BMSR_LSTATUS) == 0) { - if (tulip_debug > 1) - dev_info(&dev->dev, - "No link beat on the MII interface, status %04x\n", - new_bmsr); - return -1; - } - } - negotiated = lpa & tp->advertising[0]; - tp->full_duplex = mii_duplex(tp->full_duplex_lock, negotiated); - - new_csr6 = tp->csr6; - - if (negotiated & LPA_100) new_csr6 &= ~TxThreshold; - else new_csr6 |= TxThreshold; - if (tp->full_duplex) new_csr6 |= FullDuplex; - else new_csr6 &= ~FullDuplex; - - if (new_csr6 != tp->csr6) { - tp->csr6 = new_csr6; - tulip_restart_rxtx(tp); - - if (tulip_debug > 0) - dev_info(&dev->dev, - "Setting %s-duplex based on MII#%d link partner capability of %04x\n", - tp->full_duplex ? "full" : "half", - tp->phys[0], lpa); - return 1; - } - - return 0; -} - -void __devinit tulip_find_mii (struct net_device *dev, int board_idx) -{ - struct tulip_private *tp = netdev_priv(dev); - int phyn, phy_idx = 0; - int mii_reg0; - int mii_advert; - unsigned int to_advert, new_bmcr, ane_switch; - - /* Find the connected MII xcvrs. - Doing this in open() would allow detecting external xcvrs later, - but takes much time. */ - for (phyn = 1; phyn <= 32 && phy_idx < sizeof (tp->phys); phyn++) { - int phy = phyn & 0x1f; - int mii_status = tulip_mdio_read (dev, phy, MII_BMSR); - if ((mii_status & 0x8301) == 0x8001 || - ((mii_status & BMSR_100BASE4) == 0 && - (mii_status & 0x7800) != 0)) { - /* preserve Becker logic, gain indentation level */ - } else { - continue; - } - - mii_reg0 = tulip_mdio_read (dev, phy, MII_BMCR); - mii_advert = tulip_mdio_read (dev, phy, MII_ADVERTISE); - ane_switch = 0; - - /* if not advertising at all, gen an - * advertising value from the capability - * bits in BMSR - */ - if ((mii_advert & ADVERTISE_ALL) == 0) { - unsigned int tmpadv = tulip_mdio_read (dev, phy, MII_BMSR); - mii_advert = ((tmpadv >> 6) & 0x3e0) | 1; - } - - if (tp->mii_advertise) { - tp->advertising[phy_idx] = - to_advert = tp->mii_advertise; - } else if (tp->advertising[phy_idx]) { - to_advert = tp->advertising[phy_idx]; - } else { - tp->advertising[phy_idx] = - tp->mii_advertise = - to_advert = mii_advert; - } - - tp->phys[phy_idx++] = phy; - - pr_info("tulip%d: MII transceiver #%d config %04x status %04x advertising %04x\n", - board_idx, phy, mii_reg0, mii_status, mii_advert); - - /* Fixup for DLink with miswired PHY. */ - if (mii_advert != to_advert) { - printk(KERN_DEBUG "tulip%d: Advertising %04x on PHY %d, previously advertising %04x\n", - board_idx, to_advert, phy, mii_advert); - tulip_mdio_write (dev, phy, 4, to_advert); - } - - /* Enable autonegotiation: some boards default to off. */ - if (tp->default_port == 0) { - new_bmcr = mii_reg0 | BMCR_ANENABLE; - if (new_bmcr != mii_reg0) { - new_bmcr |= BMCR_ANRESTART; - ane_switch = 1; - } - } - /* ...or disable nway, if forcing media */ - else { - new_bmcr = mii_reg0 & ~BMCR_ANENABLE; - if (new_bmcr != mii_reg0) - ane_switch = 1; - } - - /* clear out bits we never want at this point */ - new_bmcr &= ~(BMCR_CTST | BMCR_FULLDPLX | BMCR_ISOLATE | - BMCR_PDOWN | BMCR_SPEED100 | BMCR_LOOPBACK | - BMCR_RESET); - - if (tp->full_duplex) - new_bmcr |= BMCR_FULLDPLX; - if (tulip_media_cap[tp->default_port] & MediaIs100) - new_bmcr |= BMCR_SPEED100; - - if (new_bmcr != mii_reg0) { - /* some phys need the ANE switch to - * happen before forced media settings - * will "take." However, we write the - * same value twice in order not to - * confuse the sane phys. - */ - if (ane_switch) { - tulip_mdio_write (dev, phy, MII_BMCR, new_bmcr); - udelay (10); - } - tulip_mdio_write (dev, phy, MII_BMCR, new_bmcr); - } - } - tp->mii_cnt = phy_idx; - if (tp->mtable && tp->mtable->has_mii && phy_idx == 0) { - pr_info("tulip%d: ***WARNING***: No MII transceiver found!\n", - board_idx); - tp->phys[0] = 1; - } -} |