diff options
| -rw-r--r-- | src/drivers/net/b44.c | 949 | ||||
| -rw-r--r-- | src/drivers/net/b44.h | 467 | ||||
| -rw-r--r-- | src/include/gpxe/errfile.h | 1 |
3 files changed, 1417 insertions, 0 deletions
diff --git a/src/drivers/net/b44.c b/src/drivers/net/b44.c new file mode 100644 index 00000000..4c9c8e6e --- /dev/null +++ b/src/drivers/net/b44.c @@ -0,0 +1,949 @@ +/* + * Copyright (c) 2008 Stefan Hajnoczi <stefanha@gmail.com> + * Copyright (c) 2008 Pantelis Koukousoulas <pktoss@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * This driver is a port of the b44 linux driver version 1.01 + * + * Copyright (c) 2002 David S. Miller <davem@redhat.com> + * Copyright (c) Pekka Pietikainen <pp@ee.oulu.fi> + * Copyright (C) 2006 Broadcom Corporation. + * + * Some ssb bits copied from version 2.0 of the b44 driver + * Copyright (c) Michael Buesch + * + * Copyright (c) a lot of people too. Please respect their work. + */ + +#include <errno.h> +#include <assert.h> +#include <stdio.h> +#include <unistd.h> +#include <byteswap.h> +#include <gpxe/io.h> +#include <mii.h> +#include <gpxe/iobuf.h> +#include <gpxe/malloc.h> +#include <gpxe/pci.h> +#include <gpxe/netdevice.h> +#include <gpxe/ethernet.h> +#include <gpxe/if_ether.h> +#include <gpxe/memmap.h> +#include "b44.h" + + +static inline int ring_next(int index) +{ + /* B44_RING_SIZE is a power of 2 :) */ + return (index + 1) & (B44_RING_SIZE - 1); +} + + +/* Memory-mapped I/O wrappers */ + +static inline u32 br32(const struct b44_private *bp, u32 reg) +{ + return readl(bp->regs + reg); +} + + +static inline void bw32(const struct b44_private *bp, u32 reg, u32 val) +{ + writel(val, bp->regs + reg); +} + + +static inline void bflush(const struct b44_private *bp, u32 reg, u32 timeout) +{ + readl(bp->regs + reg); + udelay(timeout); +} + + +#define VIRT_TO_B44(addr) ( virt_to_bus(addr) + SB_PCI_DMA ) + + +/** + * Return non-zero if the installed RAM is within + * the limit given and zero if it is outside. + * Hopefully will be removed soon. + */ +int phys_ram_within_limit(u64 limit) +{ + struct memory_map memmap; + struct memory_region *highest = NULL; + get_memmap(&memmap); + + highest = &memmap.regions[memmap.count - 1]; + + return (highest->end < limit); +} + + +/** + * Ring cells waiting to be processed are between 'tx_cur' and 'pending' + * indexes in the ring. + */ +static u32 pending_tx_index(struct b44_private *bp) +{ + u32 pending = br32(bp, B44_DMATX_STAT); + pending &= DMATX_STAT_CDMASK; + + pending /= sizeof(struct dma_desc); + return pending & (B44_RING_SIZE - 1); +} + + +/** + * Ring cells waiting to be processed are between 'rx_cur' and 'pending' + * indexes in the ring. + */ +static u32 pending_rx_index(struct b44_private *bp) +{ + u32 pending = br32(bp, B44_DMARX_STAT); + pending &= DMARX_STAT_CDMASK; + + pending /= sizeof(struct dma_desc); + return pending & (B44_RING_SIZE - 1); +} + + +/** + * Wait until the given bit is set/cleared. + */ +static int b44_wait_bit(struct b44_private *bp, unsigned long reg, u32 bit, + unsigned long timeout, const int clear) +{ + unsigned long i; + + for (i = 0; i < timeout; i++) { + u32 val = br32(bp, reg); + + if (clear && !(val & bit)) + break; + + if (!clear && (val & bit)) + break; + + udelay(10); + } + if (i == timeout) { + return -ENODEV; + } + return 0; +} + + +/* + * Sonics Silicon Backplane support. SSB is a mini-bus interconnecting + * so-called IP Cores. One of those cores implements the Fast Ethernet + * functionality and another one the PCI engine. + * + * You need to switch to the core you want to talk to before actually + * sending commands. + * + * See: http://bcm-v4.sipsolutions.net/Backplane for (reverse-engineered) + * specs. + */ + +static inline u32 ssb_get_core_rev(struct b44_private *bp) +{ + return (br32(bp, B44_SBIDHIGH) & SBIDHIGH_RC_MASK); +} + + +static inline int ssb_is_core_up(struct b44_private *bp) +{ + return ((br32(bp, B44_SBTMSLOW) & (SSB_CORE_DOWN | SBTMSLOW_CLOCK)) + == SBTMSLOW_CLOCK); +} + + +static u32 ssb_pci_setup(struct b44_private *bp, u32 cores) +{ + u32 bar_orig, pci_rev, val; + + pci_read_config_dword(bp->pci, SSB_BAR0_WIN, &bar_orig); + pci_write_config_dword(bp->pci, SSB_BAR0_WIN, + BCM4400_PCI_CORE_ADDR); + pci_rev = ssb_get_core_rev(bp); + + val = br32(bp, B44_SBINTVEC); + val |= cores; + bw32(bp, B44_SBINTVEC, val); + + val = br32(bp, SSB_PCI_TRANS_2); + val |= SSB_PCI_PREF | SSB_PCI_BURST; + bw32(bp, SSB_PCI_TRANS_2, val); + + pci_write_config_dword(bp->pci, SSB_BAR0_WIN, bar_orig); + + return pci_rev; +} + + +static void ssb_core_disable(struct b44_private *bp) +{ + if (br32(bp, B44_SBTMSLOW) & SBTMSLOW_RESET) + return; + + bw32(bp, B44_SBTMSLOW, (SBTMSLOW_REJECT | SBTMSLOW_CLOCK)); + b44_wait_bit(bp, B44_SBTMSLOW, SBTMSLOW_REJECT, 100000, 0); + b44_wait_bit(bp, B44_SBTMSHIGH, SBTMSHIGH_BUSY, 100000, 1); + + bw32(bp, B44_SBTMSLOW, (SBTMSLOW_FGC | SBTMSLOW_CLOCK | + SSB_CORE_DOWN)); + bflush(bp, B44_SBTMSLOW, 1); + + bw32(bp, B44_SBTMSLOW, SSB_CORE_DOWN); + bflush(bp, B44_SBTMSLOW, 1); +} + + +static void ssb_core_reset(struct b44_private *bp) +{ + u32 val; + const u32 mask = (SBTMSLOW_CLOCK | SBTMSLOW_FGC | SBTMSLOW_RESET); + + ssb_core_disable(bp); + + bw32(bp, B44_SBTMSLOW, mask); + bflush(bp, B44_SBTMSLOW, 1); + + /* Clear SERR if set, this is a hw bug workaround. */ + if (br32(bp, B44_SBTMSHIGH) & SBTMSHIGH_SERR) + bw32(bp, B44_SBTMSHIGH, 0); + + val = br32(bp, B44_SBIMSTATE); + if (val & (SBIMSTATE_BAD)) { + bw32(bp, B44_SBIMSTATE, val & ~SBIMSTATE_BAD); + } + + bw32(bp, B44_SBTMSLOW, (SBTMSLOW_CLOCK | SBTMSLOW_FGC)); + bflush(bp, B44_SBTMSLOW, 1); + + bw32(bp, B44_SBTMSLOW, (SBTMSLOW_CLOCK)); + bflush(bp, B44_SBTMSLOW, 1); +} + + +/* + * Driver helper functions + */ + +/* + * Chip reset provides power to the b44 MAC & PCI cores, which + * is necessary for MAC register access. We only do a partial + * reset in case of transmit/receive errors (ISTAT_ERRORS) to + * avoid the chip being hung for an unnecessary long time in + * this case. + * + * Called-by: b44_close, b44_halt, b44_inithw(b44_open), b44_probe + */ +static void b44_chip_reset(struct b44_private *bp, int reset_kind) +{ + if (ssb_is_core_up(bp)) { + bw32(bp, B44_RCV_LAZY, 0); + + bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE); + + b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1); + + bw32(bp, B44_DMATX_CTRL, 0); + + bp->tx_dirty = bp->tx_cur = 0; + + if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) + b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE, + 100, 0); + + bw32(bp, B44_DMARX_CTRL, 0); + + bp->rx_cur = 0; + } else { + ssb_pci_setup(bp, SBINTVEC_ENET0); + } + + ssb_core_reset(bp); + + /* Don't enable PHY if we are only doing a partial reset. */ + if (reset_kind == B44_CHIP_RESET_PARTIAL) + return; + + /* Make PHY accessible. */ + bw32(bp, B44_MDIO_CTRL, + (MDIO_CTRL_PREAMBLE | (0x0d & MDIO_CTRL_MAXF_MASK))); + bflush(bp, B44_MDIO_CTRL, 1); + + /* Enable internal or external PHY */ + if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) { + bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL); + bflush(bp, B44_ENET_CTRL, 1); + } else { + u32 val = br32(bp, B44_DEVCTRL); + if (val & DEVCTRL_EPR) { + bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR)); + bflush(bp, B44_DEVCTRL, 100); + } + } +} + + +/** + * called by b44_poll in the error path + */ +static void b44_halt(struct b44_private *bp) +{ + /* disable ints */ + bw32(bp, B44_IMASK, 0); + bflush(bp, B44_IMASK, 1); + + DBG("b44: powering down PHY\n"); + bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN); + + /* + * Now reset the chip, but without enabling + * the MAC&PHY part of it. + * This has to be done _after_ we shut down the PHY + */ + b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL); +} + + + +/* + * Called at device open time to get the chip ready for + * packet processing. + * + * Called-by: b44_open + */ +static void b44_init_hw(struct b44_private *bp, int reset_kind) +{ + u32 val; +#define CTRL_MASK (DMARX_CTRL_ENABLE | (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)) + + b44_chip_reset(bp, B44_CHIP_RESET_FULL); + if (reset_kind == B44_FULL_RESET) { + b44_phy_reset(bp); + } + + /* Enable CRC32, set proper LED modes and power on PHY */ + bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL); + bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT)); + + /* This sets the MAC address too. */ + b44_set_rx_mode(bp->netdev); + + /* MTU + eth header + possible VLAN tag + struct rx_header */ + bw32(bp, B44_RXMAXLEN, B44_MAX_MTU + ETH_HLEN + 8 + RX_HEADER_LEN); + bw32(bp, B44_TXMAXLEN, B44_MAX_MTU + ETH_HLEN + 8 + RX_HEADER_LEN); + + bw32(bp, B44_TX_HIWMARK, TX_HIWMARK_DEFLT); + if (reset_kind == B44_PARTIAL_RESET) { + bw32(bp, B44_DMARX_CTRL, CTRL_MASK); + } else { + bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE); + bw32(bp, B44_DMATX_ADDR, VIRT_TO_B44(bp->tx)); + + bw32(bp, B44_DMARX_CTRL, CTRL_MASK); + bw32(bp, B44_DMARX_ADDR, VIRT_TO_B44(bp->rx)); + bw32(bp, B44_DMARX_PTR, B44_RX_RING_LEN_BYTES); + + bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ); + } + + val = br32(bp, B44_ENET_CTRL); + bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE)); +#undef CTRL_MASK +} + + +/*** Management of ring descriptors ***/ + + +static void b44_populate_rx_descriptor(struct b44_private *bp, u32 idx) +{ + struct rx_header *rh; + u32 ctrl, addr; + + rh = bp->rx_iobuf[idx]->data; + rh->len = 0; + rh->flags = 0; + ctrl = DESC_CTRL_LEN & (RX_PKT_BUF_SZ - RX_PKT_OFFSET); + if (idx == B44_RING_LAST) { + ctrl |= DESC_CTRL_EOT; + } + addr = VIRT_TO_B44(bp->rx_iobuf[idx]->data); + + bp->rx[idx].ctrl = cpu_to_le32(ctrl); + bp->rx[idx].addr = cpu_to_le32(addr); + bw32(bp, B44_DMARX_PTR, idx * sizeof(struct dma_desc)); +} + + +/* + * Refill RX ring descriptors with buffers. This is needed + * because during rx we are passing ownership of descriptor + * buffers to the network stack. + */ +static void b44_rx_refill(struct b44_private *bp, u32 pending) +{ + u32 i; + + // skip pending + for (i = pending + 1; i != bp->rx_cur; i = ring_next(i)) { + if (bp->rx_iobuf[i] != NULL) + continue; + + bp->rx_iobuf[i] = alloc_iob(RX_PKT_BUF_SZ); + if (!bp->rx_iobuf[i]) { + DBG("Refill rx ring failed!!\n"); + break; + } + + b44_populate_rx_descriptor(bp, i); + } +} + + +static void b44_free_rx_ring(struct b44_private *bp) +{ + u32 i; + + if (bp->rx) { + for (i = 0; i < B44_RING_SIZE; i++) { + free_iob(bp->rx_iobuf[i]); + bp->rx_iobuf[i] = NULL; + } + free_dma(bp->rx, B44_RX_RING_LEN_BYTES); + bp->rx = NULL; + } +} + + +static int b44_init_rx_ring(struct b44_private *bp) +{ + b44_free_rx_ring(bp); + + bp->rx = malloc_dma(B44_RX_RING_LEN_BYTES, B44_DMA_ALIGNMENT); + if (!bp->rx) + return -ENOMEM; + + memset(bp->rx_iobuf, 0, sizeof(bp->rx_iobuf)); + + bp->rx_iobuf[0] = alloc_iob(RX_PKT_BUF_SZ); + b44_populate_rx_descriptor(bp, 0); + b44_rx_refill(bp, 0); + + DBG("Init RX rings: rx=0x%08lx\n", VIRT_TO_B44(bp->rx)); + return 0; +} + + +static void b44_free_tx_ring(struct b44_private *bp) +{ + if (bp->tx) { + free_dma(bp->tx, B44_TX_RING_LEN_BYTES); + bp->tx = NULL; + } +} + + +static int b44_init_tx_ring(struct b44_private *bp) +{ + b44_free_tx_ring(bp); + + bp->tx = malloc_dma(B44_TX_RING_LEN_BYTES, B44_DMA_ALIGNMENT); + if (!bp->tx) + return -ENOMEM; + + memset(bp->tx, 0, B44_TX_RING_LEN_BYTES); + memset(bp->tx_iobuf, 0, sizeof(bp->tx_iobuf)); + + DBG("Init TX rings: tx=0x%08lx\n", VIRT_TO_B44(bp->tx)); + return 0; +} + + +/*** Interaction with the PHY ***/ + + +static int b44_phy_read(struct b44_private *bp, int reg, u32 * val) +{ + int err; + + u32 arg1 = (MDIO_OP_READ << MDIO_DATA_OP_SHIFT); + u32 arg2 = (bp->phy_addr << MDIO_DATA_PMD_SHIFT); + u32 arg3 = (reg << MDIO_DATA_RA_SHIFT); + u32 arg4 = (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT); + u32 argv = arg1 | arg2 | arg3 | arg4; + + bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII); + bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START | argv)); + err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0); + *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA; + + return err; +} + + +static int b44_phy_write(struct b44_private *bp, int reg, u32 val) +{ + u32 arg1 = (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT); + u32 arg2 = (bp->phy_addr << MDIO_DATA_PMD_SHIFT); + u32 arg3 = (reg << MDIO_DATA_RA_SHIFT); + u32 arg4 = (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT); + u32 arg5 = (val & MDIO_DATA_DATA); + u32 argv = arg1 | arg2 | arg3 | arg4 | arg5; + + + bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII); + bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START | argv)); + return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0); +} + + +static int b44_phy_reset(struct b44_private *bp) +{ + u32 val; + int err; + + err = b44_phy_write(bp, MII_BMCR, BMCR_RESET); + if (err) + return err; + + udelay(100); + err = b44_phy_read(bp, MII_BMCR, &val); + if (!err) { + if (val & BMCR_RESET) { + return -ENODEV; + } + } + + return 0; +} + + +/* + * The BCM44xx CAM (Content Addressable Memory) stores the MAC + * and PHY address. + */ +static void b44_cam_write(struct b44_private *bp, unsigned char *data, + int index) +{ + u32 val; + + val = ((u32) data[2]) << 24; + val |= ((u32) data[3]) << 16; + val |= ((u32) data[4]) << 8; + val |= ((u32) data[5]) << 0; + bw32(bp, B44_CAM_DATA_LO, val); + + + val = (CAM_DATA_HI_VALID | + (((u32) data[0]) << 8) | (((u32) data[1]) << 0)); + + bw32(bp, B44_CAM_DATA_HI, val); + + val = CAM_CTRL_WRITE | (index << CAM_CTRL_INDEX_SHIFT); + bw32(bp, B44_CAM_CTRL, val); + + b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1); +} + + +static void b44_set_mac_addr(struct b44_private *bp) +{ + u32 val; + bw32(bp, B44_CAM_CTRL, 0); + b44_cam_write(bp, bp->netdev->ll_addr, 0); + val = br32(bp, B44_CAM_CTRL); + bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE); +} + + +/* Read 128-bytes of EEPROM. */ +static void b44_read_eeprom(struct b44_private *bp, u8 * data) +{ + long i; + u16 *ptr = (u16 *) data; + + for (i = 0; i < 128; i += 2) + ptr[i / 2] = cpu_to_le16(readw(bp->regs + 4096 + i)); +} + + +static void b44_load_mac_and_phy_addr(struct b44_private *bp) +{ + u8 eeprom[128]; + + /* Load MAC address, note byteswapping */ + b44_read_eeprom(bp, &eeprom[0]); + bp->netdev->ll_addr[0] = eeprom[79]; + bp->netdev->ll_addr[1] = eeprom[78]; + bp->netdev->ll_addr[2] = eeprom[81]; + bp->netdev->ll_addr[3] = eeprom[80]; + bp->netdev->ll_addr[4] = eeprom[83]; + bp->netdev->ll_addr[5] = eeprom[82]; + + /* Load PHY address */ + bp->phy_addr = eeprom[90] & 0x1f; +} + + +static void b44_set_rx_mode(struct net_device *netdev) +{ + struct b44_private *bp = netdev_priv(netdev); + unsigned char zero[6] = { 0, 0, 0, 0, 0, 0 }; + u32 val; + int i; + + val = br32(bp, B44_RXCONFIG); + val &= ~RXCONFIG_PROMISC; + val |= RXCONFIG_ALLMULTI; + + b44_set_mac_addr(bp); + + for (i = 1; i < 64; i++) + b44_cam_write(bp, zero, i); + + bw32(bp, B44_RXCONFIG, val); + val = br32(bp, B44_CAM_CTRL); + bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE); +} + + +/*** Implementation of gPXE driver callbacks ***/ + +/** + * Probe device + * + * @v pci PCI device + * @v id Matching entry in ID table + * @ret rc Return status code + */ +static int b44_probe(struct pci_device *pci, const struct pci_device_id *id) +{ + struct net_device *netdev; + struct b44_private *bp; + int rc; + + /* + * Bail out if more than 1GB of physical RAM is installed. + * This limitation will be removed later when dma mapping + * is merged into mainline. + */ + if (!phys_ram_within_limit(B44_30BIT_DMA_MASK)) { + DBG("Sorry, this version of the driver does not\n" + "support systems with more than 1GB of RAM.\n"); + return -ENOMEM; + } + + /* Set up netdev */ + netdev = alloc_etherdev(sizeof(*bp)); + if (!netdev) + return -ENOMEM; + + netdev_init(netdev, &b44_operations); + pci_set_drvdata(pci, netdev); + netdev->dev = &pci->dev; + + /* Set up private data */ + bp = netdev_priv(netdev); + memset(bp, 0, sizeof(*bp)); + bp->netdev = netdev; + bp->pci = pci; + + /* Map device registers */ + bp->regs = ioremap(pci->membase, B44_REGS_SIZE); + if (!bp->regs) { + netdev_put(netdev); + return -ENOMEM; + } + + /* Enable PCI bus mastering */ + adjust_pci_device(pci); + + b44_load_mac_and_phy_addr(bp); + + /* Link management currently not implemented */ + netdev_link_up(netdev); + + rc = register_netdev(netdev); + if (rc != 0) { + iounmap(bp->regs); + netdev_put(netdev); + return rc; + } + + b44_chip_reset(bp, B44_CHIP_RESET_FULL); + + DBG("b44 %s (%04x:%04x) regs=%p MAC=%s\n", id->name, id->vendor, + id->device, bp->regs, eth_ntoa(netdev->ll_addr)); + + return 0; +} + + +/** + * Remove device + * + * @v pci PCI device + */ +static void b44_remove(struct pci_device *pci) +{ + struct net_device *netdev = pci_get_drvdata(pci); + struct b44_private *bp = netdev_priv(netdev); + + ssb_core_disable(bp); + unregister_netdev(netdev); + iounmap(bp->regs); + netdev_nullify(netdev); + netdev_put(netdev); +} + + +/** Enable or disable interrupts + * + * @v netdev Network device + * @v enable Interrupts should be enabled + */ +static void b44_irq(struct net_device *netdev, int enable) +{ + struct b44_private *bp = netdev_priv(netdev); + + /* Interrupt mask specifies which events generate interrupts */ + bw32(bp, B44_IMASK, enable ? IMASK_DEF : IMASK_DISABLE); +} + + +/** Open network device + * + * @v netdev Network device + * @ret rc Return status code + */ +static int b44_open(struct net_device *netdev) +{ + struct b44_private *bp = netdev_priv(netdev); + int rc; + + rc = b44_init_tx_ring(bp); + if (rc != 0) + return rc; + + rc = b44_init_rx_ring(bp); + if (rc != 0) + return rc; + + b44_init_hw(bp, B44_FULL_RESET); + + /* Disable interrupts */ + b44_irq(netdev, 0); + + return 0; +} + + +/** Close network device + * + * @v netdev Network device + */ +static void b44_close(struct net_device *netdev) +{ + struct b44_private *bp = netdev_priv(netdev); + + b44_chip_reset(bp, B44_FULL_RESET); + b44_free_tx_ring(bp); + b44_free_rx_ring(bp); +} + + +/** Transmit packet + * + * @v netdev Network device + * @v iobuf I/O buffer + * @ret rc Return status code + */ +static int b44_transmit(struct net_device *netdev, struct io_buffer *iobuf) +{ + struct b44_private *bp = netdev_priv(netdev); + u32 cur = bp->tx_cur; + u32 ctrl; + + /* Check for TX ring overflow */ + if (bp->tx[cur].ctrl) { + DBG("tx overflow\n"); + return -ENOBUFS; + } + + /* Will call netdev_tx_complete() on the iobuf later */ + bp->tx_iobuf[cur] = iobuf; + + /* Set up TX descriptor */ + ctrl = (iob_len(iobuf) & DESC_CTRL_LEN) | + DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF; + + if (cur == B44_RING_LAST) + ctrl |= DESC_CTRL_EOT; + + bp->tx[cur].ctrl = cpu_to_le32(ctrl); + bp->tx[cur].addr = cpu_to_le32(VIRT_TO_B44(iobuf->data)); + + /* Update next available descriptor index */ + cur = ring_next(cur); + bp->tx_cur = cur; + wmb(); + + /* Tell card that a new TX descriptor is ready */ + bw32(bp, B44_DMATX_PTR, cur * sizeof(struct dma_desc)); + return 0; +} + + +/** Recycles sent TX descriptors and notifies network stack + * + * @v bp Driver state + */ +static void b44_tx_complete(struct b44_private *bp) +{ + u32 cur, i; + + cur = pending_tx_index(bp); + + for (i = bp->tx_dirty; i != cur; i = ring_next(i)) { + /* Free finished frame */ + netdev_tx_complete(bp->netdev, bp->tx_iobuf[i]); + bp->tx_iobuf[i] = NULL; + + /* Clear TX descriptor */ + bp->tx[i].ctrl = 0; + bp->tx[i].addr = 0; + } + bp->tx_dirty = cur; +} + + +static void b44_process_rx_packets(struct b44_private *bp) +{ + struct io_buffer *iob; /* received data */ + struct rx_header *rh; + u32 pending, i; + u16 len; + + pending = pending_rx_index(bp); + + for (i = bp->rx_cur; i != pending; i = ring_next(i)) { + iob = bp->rx_iobuf[i]; + if (iob == NULL) + break; + + rh = iob->data; + len = le16_to_cpu(rh->len); + + /* + * Guard against incompletely written RX descriptors. + * Without this, things can get really slow! + */ + if (len == 0) + break; + + /* Discard CRC that is generated by the card */ + len -= 4; + + /* Check for invalid packets and errors */ + if (len > RX_PKT_BUF_SZ - RX_PKT_OFFSET || + (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) { + DBG("rx error len=%d flags=%04x\n", len, + cpu_to_le16(rh->flags)); + rh->len = 0; + rh->flags = 0; + netdev_rx_err(bp->netdev, iob, -EINVAL); + continue; + } + + /* Clear RX descriptor */ + rh->len = 0; + rh->flags = 0; + bp->rx_iobuf[i] = NULL; + + /* Hand off the IO buffer to the network stack */ + iob_reserve(iob, RX_PKT_OFFSET); + iob_put(iob, len); + netdev_rx(bp->netdev, iob); + } + bp->rx_cur = i; + b44_rx_refill(bp, pending_rx_index(bp)); +} + + +/** Poll for completed and received packets + * + * @v netdev Network device + */ +static void b44_poll(struct net_device *netdev) +{ + struct b44_private *bp = netdev_priv(netdev); + u32 istat; + + /* Interrupt status */ + istat = br32(bp, B44_ISTAT); + istat &= IMASK_DEF; /* only the events we care about */ + + if (!istat) + return; + if (istat & ISTAT_TX) + b44_tx_complete(bp); + if (istat & ISTAT_RX) + b44_process_rx_packets(bp); + if (istat & ISTAT_ERRORS) { + DBG("b44 error istat=0x%08x\n", istat); + + /* Reset B44 core partially to avoid long waits */ + b44_irq(bp->netdev, 0); + b44_halt(bp); + b44_init_tx_ring(bp); + b44_init_rx_ring(bp); + b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY); + } + + /* Acknowledge interrupt */ + bw32(bp, B44_ISTAT, 0); + bflush(bp, B44_ISTAT, 1); +} + + +static struct net_device_operations b44_operations = { + .open = b44_open, + .close = b44_close, + .transmit = b44_transmit, + .poll = b44_poll, + .irq = b44_irq, +}; + + +static struct pci_device_id b44_nics[] = { + PCI_ROM(0x14e4, 0x4401, "BCM4401", "BCM4401"), + PCI_ROM(0x14e4, 0x170c, "BCM4401-B0", "BCM4401-B0"), + PCI_ROM(0x14e4, 0x4402, "BCM4401-B1", "BCM4401-B1"), +}; + + +struct pci_driver b44_driver __pci_driver = { + .ids = b44_nics, + .id_count = sizeof b44_nics / sizeof b44_nics[0], + .probe = b44_probe, + .remove = b44_remove, +}; diff --git a/src/drivers/net/b44.h b/src/drivers/net/b44.h new file mode 100644 index 00000000..fb36757f --- /dev/null +++ b/src/drivers/net/b44.h @@ -0,0 +1,467 @@ +/* + * Copyright (c) 2008 Stefan Hajnoczi <stefanha@gmail.com> + * Copyright (c) 2008 Pantelis Koukousoulas <pktoss@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * This driver is a port of the b44 linux driver version 1.01 + * + * Copyright (c) 2002 David S. Miller <davem@redhat.com> + * Copyright (c) Pekka Pietikainen <pp@ee.oulu.fi> + * Copyright (C) 2006 Broadcom Corporation. + * + * Some ssb bits copied from version 2.0 of the b44 driver + * Copyright (c) Michael Buesch + * + * Copyright (c) a lot of people too. Please respect their work. + */ +#ifndef _B44_H +#define _B44_H + +/* BCM44xx Register layout */ +#define B44_DEVCTRL 0x0000UL /* Device Control */ +#define DEVCTRL_MPM 0x00000040 /* MP PME Enable (B0 only) */ +#define DEVCTRL_PFE 0x00000080 /* Pattern Filtering Enable */ +#define DEVCTRL_IPP 0x00000400 /* Internal EPHY Present */ +#define DEVCTRL_EPR 0x00008000 /* EPHY Reset */ +#define DEVCTRL_PME 0x00001000 /* PHY Mode Enable */ +#define DEVCTRL_PMCE 0x00002000 /* PHY Mode Clocks Enable */ +#define DEVCTRL_PADDR 0x0007c000 /* PHY Address */ +#define DEVCTRL_PADDR_SHIFT 18 +#define B44_BIST_STAT 0x000CUL /* Built-In Self-Test Status */ +#define B44_WKUP_LEN 0x0010UL /* Wakeup Length */ +#define WKUP_LEN_P0_MASK 0x0000007f /* Pattern 0 */ +#define WKUP_LEN_D0 0x00000080 +#define WKUP_LEN_P1_MASK 0x00007f00 /* Pattern 1 */ +#define WKUP_LEN_P1_SHIFT 8 +#define WKUP_LEN_D1 0x00008000 +#define WKUP_LEN_P2_MASK 0x007f0000 /* Pattern 2 */ +#define WKUP_LEN_P2_SHIFT 16 +#define WKUP_LEN_D2 0x00000000 +#define WKUP_LEN_P3_MASK 0x7f000000 /* Pattern 3 */ +#define WKUP_LEN_P3_SHIFT 24 +#define WKUP_LEN_D3 0x80000000 +#define WKUP_LEN_DISABLE 0x80808080 +#define WKUP_LEN_ENABLE_TWO 0x80800000 +#define WKUP_LEN_ENABLE_THREE 0x80000000 +#define B44_ISTAT 0x0020UL /* Interrupt Status */ +#define ISTAT_LS 0x00000020 /* Link Change (B0 only) */ +#define ISTAT_PME 0x00000040 /* Power Management Event */ +#define ISTAT_TO 0x00000080 /* General Purpose Timeout */ +#define ISTAT_DSCE 0x00000400 /* Descriptor Error */ +#define ISTAT_DATAE 0x00000800 /* Data Error */ +#define ISTAT_DPE 0x00001000 /* Descr. Protocol Error */ +#define ISTAT_RDU 0x00002000 /* Receive Descr. Underflow */ +#define ISTAT_RFO 0x00004000 /* Receive FIFO Overflow */ +#define ISTAT_TFU 0x00008000 /* Transmit FIFO Underflow */ +#define ISTAT_RX 0x00010000 /* RX Interrupt */ +#define ISTAT_TX 0x01000000 /* TX Interrupt */ +#define ISTAT_EMAC 0x04000000 /* EMAC Interrupt */ +#define ISTAT_MII_WRITE 0x08000000 /* MII Write Interrupt */ +#define ISTAT_MII_READ 0x10000000 /* MII Read Interrupt */ +#define ISTAT_ERRORS (ISTAT_DSCE|ISTAT_DATAE|ISTAT_DPE|\ + ISTAT_RDU|ISTAT_RFO|ISTAT_TFU) +#define B44_IMASK 0x0024UL /* Interrupt Mask */ +#define IMASK_DEF (ISTAT_ERRORS | ISTAT_RX | ISTAT_TX) +#define IMASK_DISABLE 0 +#define B44_GPTIMER 0x0028UL /* General Purpose Timer */ +#define B44_ADDR_LO 0x0088UL /* ENET Address Lo (B0 only) */ +#define B44_ADDR_HI 0x008CUL /* ENET Address Hi (B0 only) */ +#define B44_FILT_ADDR 0x0090UL /* ENET Filter Address */ +#define B44_FILT_DATA 0x0094UL /* ENET Filter Data */ +#define B44_TXBURST 0x00A0UL /* TX Max Burst Length */ +#define B44_RXBURST 0x00A4UL /* RX Max Burst Length */ +#define B44_MAC_CTRL 0x00A8UL /* MAC Control */ +#define MAC_CTRL_CRC32_ENAB 0x00000001 /* CRC32 Generation Enable */ +#define MAC_CTRL_PHY_PDOWN 0x00000004 /* Onchip EPHY Powerdown */ +#define MAC_CTRL_PHY_EDET 0x00000008 /* Onchip EPHY Energy Detected*/ +#define MAC_CTRL_PHY_LEDCTRL 0x000000e0 /* Onchip EPHY LED Control */ +#define MAC_CTRL_PHY_LEDCTRL_SHIFT 5 +#define B44_MAC_FLOW 0x00ACUL /* MAC Flow Control */ +#define MAC_FLOW_RX_HI_WATER 0x000000ff /* Receive FIFO HI Water Mark */ +#define MAC_FLOW_PAUSE_ENAB 0x00008000 /* Enbl Pause Frm Generation */ +#define B44_RCV_LAZY 0x0100UL /* Lazy Interrupt Control */ +#define RCV_LAZY_TO_MASK 0x00ffffff /* Timeout */ +#define RCV_LAZY_FC_MASK 0xff000000 /* Frame Count */ +#define RCV_LAZY_FC_SHIFT 24 +#define B44_DMATX_CTRL 0x0200UL /* DMA TX Control */ +#define DMATX_CTRL_ENABLE 0x00000001 /* Enable */ +#define DMATX_CTRL_SUSPEND 0x00000002 /* Suepend Request */ +#define DMATX_CTRL_LPBACK 0x00000004 /* Loopback Enable */ +#define DMATX_CTRL_FAIRPRIOR 0x00000008 /* Fair Priority */ +#define DMATX_CTRL_FLUSH 0x00000010 /* Flush Request */ +#define B44_DMATX_ADDR 0x0204UL /* DMA TX Descriptor Ring Addr */ +#define B44_DMATX_PTR 0x0208UL /* DMA TX Last Posted Desc. */ +#define B44_DMATX_STAT 0x020CUL /* DMA TX Cur Actve Desc. + Sts */ +#define DMATX_STAT_CDMASK 0x00000fff /* Current Descriptor Mask */ +#define DMATX_STAT_SMASK 0x0000f000 /* State Mask */ +#define DMATX_STAT_SDISABLED 0x00000000 /* State Disabled */ +#define DMATX_STAT_SACTIVE 0x00001000 /* State Active */ +#define DMATX_STAT_SIDLE 0x00002000 /* State Idle Wait */ +#define DMATX_STAT_SSTOPPED 0x00003000 /* State Stopped */ +#define DMATX_STAT_SSUSP 0x00004000 /* State Suspend Pending */ +#define DMATX_STAT_EMASK 0x000f0000 /* Error Mask */ +#define DMATX_STAT_ENONE 0x00000000 /* Error None */ +#define DMATX_STAT_EDPE 0x00010000 /* Error Desc. Protocol Error */ +#define DMATX_STAT_EDFU 0x00020000 /* Error Data FIFO Underrun */ +#define DMATX_STAT_EBEBR 0x00030000 /* Bus Error on Buffer Read */ +#define DMATX_STAT_EBEDA 0x00040000 /* Bus Error on Desc. Access */ +#define DMATX_STAT_FLUSHED 0x00100000 /* Flushed */ +#define B44_DMARX_CTRL 0x0210UL /* DMA RX Control */ +#define DMARX_CTRL_ENABLE 0x00000001 /* Enable */ +#define DMARX_CTRL_ROMASK 0x000000fe /* Receive Offset Mask */ +#define DMARX_CTRL_ROSHIFT 1 /* Receive Offset Shift */ +#define B44_DMARX_ADDR 0x0214UL /* DMA RX Descriptor Ring Addr */ +#define B44_DMARX_PTR 0x0218UL /* DMA RX Last Posted Desc */ +#define B44_DMARX_STAT 0x021CUL /* Cur Active Desc. + Status */ +#define DMARX_STAT_CDMASK 0x00000fff /* Current Descriptor Mask */ +#define DMARX_STAT_SMASK 0x0000f000 /* State Mask */ +#define DMARX_STAT_SDISABLED 0x00000000 /* State Disbaled */ +#define DMARX_STAT_SACTIVE 0x00001000 /* State Active */ +#define DMARX_STAT_SIDLE 0x00002000 /* State Idle Wait */ +#define DMARX_STAT_SSTOPPED 0x00003000 /* State Stopped */ +#define DMARX_STAT_EMASK 0x000f0000 /* Error Mask */ +#define DMARX_STAT_ENONE 0x00000000 /* Error None */ +#define DMARX_STAT_EDPE 0x00010000 /* Error Desc. Protocol Error */ +#define DMARX_STAT_EDFO 0x00020000 /* Error Data FIFO Overflow */ +#define DMARX_STAT_EBEBW 0x00030000 /* Error on Buffer Write */ +#define DMARX_STAT_EBEDA 0x00040000 /* Bus Error on Desc. Access */ +#define B44_DMAFIFO_AD 0x0220UL /* DMA FIFO Diag Address */ +#define DMAFIFO_AD_OMASK 0x0000ffff /* Offset Mask */ +#define DMAFIFO_AD_SMASK 0x000f0000 /* Select Mask */ +#define DMAFIFO_AD_SXDD 0x00000000 /* Select Transmit DMA Data */ +#define DMAFIFO_AD_SXDP 0x00010000 /* Sel Transmit DMA Pointers */ +#define DMAFIFO_AD_SRDD 0x00040000 /* Select Receive DMA Data */ +#define DMAFIFO_AD_SRDP 0x00050000 /* Sel Receive DMA Pointers */ +#define DMAFIFO_AD_SXFD 0x00080000 /* Select Transmit FIFO Data */ +#define DMAFIFO_AD_SXFP 0x00090000 /* Sel Transmit FIFO Pointers */ +#define DMAFIFO_AD_SRFD 0x000c0000 /* Select Receive FIFO Data */ +#define DMAFIFO_AD_SRFP 0x000c0000 /* Sel Receive FIFO Pointers */ +#define B44_DMAFIFO_LO 0x0224UL /* DMA FIFO Diag Low Data */ +#define B44_DMAFIFO_HI 0x0228UL /* DMA FIFO Diag High Data */ +#define B44_RXCONFIG 0x0400UL /* EMAC RX Config */ +#define RXCONFIG_DBCAST 0x00000001 /* Disable Broadcast */ +#define RXCONFIG_ALLMULTI 0x00000002 /* Accept All Multicast */ +#define RXCONFIG_NORX_WHILE_TX 0x00000004 /* Rcv Disble While TX */ +#define RXCONFIG_PROMISC 0x00000008 /* Promiscuous Enable */ +#define RXCONFIG_LPBACK 0x00000010 /* Loopback Enable */ +#define RXCONFIG_FLOW 0x00000020 /* Flow Control Enable */ +#define RXCONFIG_FLOW_ACCEPT 0x00000040 /* Accept UFC Frame */ +#define RXCONFIG_RFILT 0x00000080 /* Reject Filter */ +#define B44_RXMAXLEN 0x0404UL /* EMAC RX Max Packet Length */ +#define B44_TXMAXLEN 0x0408UL /* EMAC TX Max Packet Length */ +#define B44_MDIO_CTRL 0x0410UL /* EMAC MDIO Control */ +#define MDIO_CTRL_MAXF_MASK 0x0000007f /* MDC Frequency */ +#define MDIO_CTRL_PREAMBLE 0x00000080 /* MII Preamble Enable */ +#define B44_MDIO_DATA 0x0414UL /* EMAC MDIO Data */ +#define MDIO_DATA_DATA 0x0000ffff /* R/W Data */ +#define MDIO_DATA_TA_MASK 0x00030000 /* Turnaround Value */ +#define MDIO_DATA_TA_SHIFT 16 +#define MDIO_TA_VALID 2 +#define MDIO_DATA_RA_MASK 0x007c0000 /* Register Address */ +#define MDIO_DATA_RA_SHIFT 18 +#define MDIO_DATA_PMD_MASK 0x0f800000 /* Physical Media Device */ +#define MDIO_DATA_PMD_SHIFT 23 +#define MDIO_DATA_OP_MASK 0x30000000 /* Opcode */ +#define MDIO_DATA_OP_SHIFT 28 +#define MDIO_OP_WRITE 1 +#define MDIO_OP_READ 2 +#define MDIO_DATA_SB_MASK 0xc0000000 /* Start Bits */ +#define MDIO_DATA_SB_SHIFT 30 +#define MDIO_DATA_SB_START 0x40000000 /* Start Of Frame */ +#define B44_EMAC_IMASK 0x0418UL /* EMAC Interrupt Mask */ +#define B44_EMAC_ISTAT 0x041CUL /* EMAC Interrupt Status */ +#define EMAC_INT_MII 0x00000001 /* MII MDIO Interrupt */ +#define EMAC_INT_MIB 0x00000002 /* MIB Interrupt */ +#define EMAC_INT_FLOW 0x00000003 /* Flow Control Interrupt */ +#define B44_CAM_DATA_LO 0x0420UL /* EMAC CAM Data Low */ +#define B44_CAM_DATA_HI 0x0424UL /* EMAC CAM Data High */ +#define CAM_DATA_HI_VALID 0x00010000 /* Valid Bit */ +#define B44_CAM_CTRL 0x0428UL /* EMAC CAM Control */ +#define CAM_CTRL_ENABLE 0x00000001 /* CAM Enable */ +#define CAM_CTRL_MSEL 0x00000002 /* Mask Select */ +#define CAM_CTRL_READ 0x00000004 /* Read */ +#define CAM_CTRL_WRITE 0x00000008 /* Read */ +#define CAM_CTRL_INDEX_MASK 0x003f0000 /* Index Mask */ +#define CAM_CTRL_INDEX_SHIFT 16 +#define CAM_CTRL_BUSY 0x80000000 /* CAM Busy */ +#define B44_ENET_CTRL 0x042CUL /* EMAC ENET Control */ +#define ENET_CTRL_ENABLE 0x00000001 /* EMAC Enable */ +#define ENET_CTRL_DISABLE 0x00000002 /* EMAC Disable */ +#define ENET_CTRL_SRST 0x00000004 /* EMAC Soft Reset */ +#define ENET_CTRL_EPSEL 0x00000008 /* External PHY Select */ +#define B44_TX_CTRL 0x0430UL /* EMAC TX Control */ +#define TX_CTRL_DUPLEX 0x00000001 /* Full Duplex */ +#define TX_CTRL_FMODE 0x00000002 /* Flow Mode */ +#define TX_CTRL_SBENAB 0x00000004 /* Single Backoff Enable */ +#define TX_CTRL_SMALL_SLOT 0x00000008 /* Small Slottime */ +#define B44_TX_HIWMARK 0x0434UL /* EMAC TX High Watermark */ +#define TX_HIWMARK_DEFLT 56 /* Default used in all drivers */ +#define B44_MIB_CTRL 0x0438UL /* EMAC MIB Control */ +#define MIB_CTRL_CLR_ON_READ 0x00000001 /* Autoclear on Read */ +#define B44_TX_GOOD_O 0x0500UL /* MIB TX Good Octets */ +#define B44_TX_GOOD_P 0x0504UL /* MIB TX Good Packets */ +#define B44_TX_O 0x0508UL /* MIB TX Octets */ +#define B44_TX_P 0x050CUL /* MIB TX Packets */ +#define B44_TX_BCAST 0x0510UL /* MIB TX Broadcast Packets */ +#define B44_TX_MCAST 0x0514UL /* MIB TX Multicast Packets */ +#define B44_TX_64 0x0518UL /* MIB TX <= 64 byte Packets */ +#define B44_TX_65_127 0x051CUL /* MIB TX 65 to 127 byte Pkts */ +#define B44_TX_128_255 0x0520UL /* MIB TX 128 to 255 byte Pkts */ +#define B44_TX_256_511 0x0524UL /* MIB TX 256 to 511 byte Pkts */ +#define B44_TX_512_1023 0x0528UL /* MIB TX 512 to 1023 byte Pkts */ +#define B44_TX_1024_MAX 0x052CUL /* MIB TX 1024 to max byte Pkts */ +#define B44_TX_JABBER 0x0530UL /* MIB TX Jabber Packets */ +#define B44_TX_OSIZE 0x0534UL /* MIB TX Oversize Packets */ +#define B44_TX_FRAG 0x0538UL /* MIB TX Fragment Packets */ +#define B44_TX_URUNS 0x053CUL /* MIB TX Underruns */ +#define B44_TX_TCOLS 0x0540UL /* MIB TX Total Collisions */ +#define B44_TX_SCOLS 0x0544UL /* MIB TX Single Collisions */ +#define B44_TX_MCOLS 0x0548UL /* MIB TX Multiple Collisions */ +#define B44_TX_ECOLS 0x054CUL /* MIB TX Excessive Collisions */ +#define B44_TX_LCOLS 0x0550UL /* MIB TX Late Collisions */ +#define B44_TX_DEFERED 0x0554UL /* MIB TX Defered Packets */ +#define B44_TX_CLOST 0x0558UL /* MIB TX Carrier Lost */ +#define B44_TX_PAUSE 0x055CUL /* MIB TX Pause Packets */ +#define B44_RX_GOOD_O 0x0580UL /* MIB RX Good Octets */ +#define B44_RX_GOOD_P 0x0584UL /* MIB RX Good Packets */ +#define B44_RX_O 0x0588UL /* MIB RX Octets */ +#define B44_RX_P 0x058CUL /* MIB RX Packets */ +#define B44_RX_BCAST 0x0590UL /* MIB RX Broadcast Packets */ +#define B44_RX_MCAST 0x0594UL /* MIB RX Multicast Packets */ +#define B44_RX_64 0x0598UL /* MIB RX <= 64 byte Packets */ +#define B44_RX_65_127 0x059CUL /* MIB RX 65 to 127 byte Pkts */ +#define B44_RX_128_255 0x05A0UL /* MIB RX 128 to 255 byte Pkts */ +#define B44_RX_256_511 0x05A4UL /* MIB RX 256 to 511 byte Pkts */ +#define B44_RX_512_1023 0x05A8UL /* MIB RX 512 to 1023 byte Pkts */ +#define B44_RX_1024_MAX 0x05ACUL /* MIB RX 1024 to max byte Pkts */ +#define B44_RX_JABBER 0x05B0UL /* MIB RX Jabber Packets */ +#define B44_RX_OSIZE 0x05B4UL /* MIB RX Oversize Packets */ +#define B44_RX_FRAG 0x05B8UL /* MIB RX Fragment Packets */ +#define B44_RX_MISS 0x05BCUL /* MIB RX Missed Packets */ +#define B44_RX_CRCA 0x05C0UL /* MIB RX CRC Align Errors */ +#define B44_RX_USIZE 0x05C4UL /* MIB RX Undersize Packets */ +#define B44_RX_CRC 0x05C8UL /* MIB RX CRC Errors */ +#define B44_RX_ALIGN 0x05CCUL /* MIB RX Align Errors */ +#define B44_RX_SYM 0x05D0UL /* MIB RX Symbol Errors */ +#define B44_RX_PAUSE 0x05D4UL /* MIB RX Pause Packets */ +#define B44_RX_NPAUSE 0x05D8UL /* MIB RX Non-Pause Packets */ + +/* Sonics Silicon backplane register definitions */ +#define B44_SBIMSTATE 0x0F90UL /* SB Initiator Agent State */ +#define SBIMSTATE_PC 0x0000000f /* Pipe Count */ +#define SBIMSTATE_AP_MASK 0x00000030 /* Arbitration Priority */ +#define SBIMSTATE_AP_BOTH 0x00000000 /* both timeslices and token */ +#define SBIMSTATE_AP_TS 0x00000010 /* Use timeslices only */ +#define SBIMSTATE_AP_TK 0x00000020 /* Use token only */ +#define SBIMSTATE_AP_RSV 0x00000030 /* Reserved */ +#define SBIMSTATE_IBE 0x00020000 /* In Band Error */ +#define SBIMSTATE_TO 0x00040000 /* Timeout */ +#define SBIMSTATE_BAD ( SBIMSTATE_IBE | SBIMSTATE_TO ) +#define B44_SBINTVEC 0x0F94UL /* SB Interrupt Mask */ +#define SBINTVEC_PCI 0x00000001 /* Enable interrupts for PCI */ +#define SBINTVEC_ENET0 0x00000002 /* Enable ints for enet 0 */ +#define SBINTVEC_ILINE20 0x00000004 /* Enable ints for iline20 */ +#define SBINTVEC_CODEC 0x00000008 /* Enable ints for v90 codec */ +#define SBINTVEC_USB 0x00000010 /* Enable intts for usb */ +#define SBINTVEC_EXTIF 0x00000020 /* Enable ints for ext i/f */ +#define SBINTVEC_ENET1 0x00000040 /* Enable ints for enet 1 */ +#define B44_SBTMSLOW 0x0F98UL /* SB Target State Low */ +#define SBTMSLOW_RESET 0x00000001 /* Reset */ +#define SBTMSLOW_REJECT 0x00000002 /* Reject */ +#define SBTMSLOW_CLOCK 0x00010000 /* Clock Enable */ +#define SBTMSLOW_FGC 0x00020000 /* Force Gated Clocks On */ +#define SBTMSLOW_PE 0x40000000 /* Power Management Enable */ +#define SBTMSLOW_BE 0x80000000 /* BIST Enable */ +#define B44_SBTMSHIGH 0x0F9CUL /* SB Target State High */ +#define SBTMSHIGH_SERR 0x00000001 /* S-error */ +#define SBTMSHIGH_INT 0x00000002 /* Interrupt */ +#define SBTMSHIGH_BUSY 0x00000004 /* Busy */ +#define SBTMSHIGH_GCR 0x20000000 /* Gated Clock Request */ +#define SBTMSHIGH_BISTF 0x40000000 /* BIST Failed */ +#define SBTMSHIGH_BISTD 0x80000000 /* BIST Done */ +#define B44_SBIDHIGH 0x0FFCUL /* SB Identification High */ +#define SBIDHIGH_RC_MASK 0x0000000f /* Revision Code */ +#define SBIDHIGH_CC_MASK 0x0000fff0 /* Core Code */ +#define SBIDHIGH_CC_SHIFT 4 +#define SBIDHIGH_VC_MASK 0xffff0000 /* Vendor Code */ +#define SBIDHIGH_VC_SHIFT 16 + +/* SSB PCI config space registers. */ +#define SSB_PMCSR 0x44 +#define SSB_PE 0x100 +#define SSB_BAR0_WIN 0x80 +#define SSB_BAR1_WIN 0x84 +#define SSB_SPROM_CONTROL 0x88 +#define SSB_BAR1_CONTROL 0x8c + +/* SSB core and host control registers. */ +#define SSB_CONTROL 0x0000UL +#define SSB_ARBCONTROL 0x0010UL +#define SSB_ISTAT 0x0020UL +#define SSB_IMASK 0x0024UL +#define SSB_MBOX 0x0028UL +#define SSB_BCAST_ADDR 0x0050UL +#define SSB_BCAST_DATA 0x0054UL +#define SSB_PCI_TRANS_0 0x0100UL +#define SSB_PCI_TRANS_1 0x0104UL +#define SSB_PCI_TRANS_2 0x0108UL +#define SSB_SPROM 0x0800UL + +#define SSB_PCI_MEM 0x00000000 +#define SSB_PCI_IO 0x00000001 +#define SSB_PCI_CFG0 0x00000002 +#define SSB_PCI_CFG1 0x00000003 +#define SSB_PCI_PREF 0x00000004 +#define SSB_PCI_BURST 0x00000008 +#define SSB_PCI_MASK0 0xfc000000 +#define SSB_PCI_MASK1 0xfc000000 +#define SSB_PCI_MASK2 0xc0000000 + +/* 4400 PHY registers */ +#define B44_MII_AUXCTRL 24 /* Auxiliary Control */ +#define MII_AUXCTRL_DUPLEX 0x0001 /* Full Duplex */ +#define MII_AUXCTRL_SPEED 0x0002 /* 1=100Mbps, 0=10Mbps */ +#define MII_AUXCTRL_FORCED 0x0004 /* Forced 10/100 */ +#define B44_MII_ALEDCTRL 26 /* Activity LED */ +#define MII_ALEDCTRL_ALLMSK 0x7fff +#define B44_MII_TLEDCTRL 27 /* Traffic Meter LED */ +#define MII_TLEDCTRL_ENABLE 0x0040 + +/* RX/TX descriptor */ +struct dma_desc { + u32 ctrl; /* length of data and flags */ + u32 addr; /* address of data */ +}; + +/* There are only 12 bits in the DMA engine for descriptor offsetting + * so the table must be aligned on a boundary of this. + */ +#define B44_DMA_ALIGNMENT 4096 + +/* The DMA engine can only address the first gigabyte of address space + */ +#define B44_30BIT_DMA_MASK 0x3fffffff + +#define DESC_CTRL_LEN 0x00001fff +#define DESC_CTRL_CMASK 0x0ff00000 /* Core specific bits */ +#define DESC_CTRL_EOT 0x10000000 /* End of Table */ +#define DESC_CTRL_IOC 0x20000000 /* Interrupt On Completion */ +#define DESC_CTRL_EOF 0x40000000 /* End of Frame */ +#define DESC_CTRL_SOF 0x80000000 /* Start of Frame */ + +struct rx_header { + u16 len; + u16 flags; + u16 pad[12]; +}; +#define RX_HEADER_LEN 28 + +#define RX_FLAG_OFIFO 0x00000001 /* FIFO Overflow */ +#define RX_FLAG_CRCERR 0x00000002 /* CRC Error */ +#define RX_FLAG_SERR 0x00000004 /* Receive Symbol Error */ +#define RX_FLAG_ODD 0x00000008 /* Frame has odd number of nibbles */ +#define RX_FLAG_LARGE 0x00000010 /* Frame is > RX MAX Length */ +#define RX_FLAG_MCAST 0x00000020 /* Dest is Multicast Address */ +#define RX_FLAG_BCAST 0x00000040 /* Dest is Broadcast Address */ +#define RX_FLAG_MISS 0x00000080 /* Received due to promisc mode */ +#define RX_FLAG_LAST 0x00000800 /* Last buffer in frame */ +#define RX_FLAG_ERRORS (RX_FLAG_ODD | RX_FLAG_SERR |\ + RX_FLAG_CRCERR | RX_FLAG_OFIFO) + +/* Client Mode PCI memory access space (1 GB) */ +#define SB_PCI_DMA 0x40000000 + + /* Address of PCI core on BCM4400 cards */ +#define BCM4400_PCI_CORE_ADDR 0x18002000 + +/* Hardware minimum and maximum for a single frame's data payload */ +#define B44_MIN_MTU 60 +#define B44_MAX_MTU 1500 + +#define B44_RING_SIZE 8 +#define B44_RING_LAST ( B44_RING_SIZE - 1 ) + +#define B44_RX_RING_LEN_BYTES ( sizeof bp->rx[0] * B44_RING_SIZE ) +#define B44_TX_RING_LEN_BYTES ( sizeof bp->tx[0] * B44_RING_SIZE ) + +#define RX_PKT_OFFSET 30 +#define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET + 64) + +#define B44_FULL_RESET 1 +#define B44_FULL_RESET_SKIP_PHY 2 +#define B44_PARTIAL_RESET 3 +#define B44_CHIP_RESET_FULL 4 +#define B44_CHIP_RESET_PARTIAL 5 + +#define SSB_CORE_DOWN ( SBTMSLOW_RESET | SBTMSLOW_REJECT ) + +#define B44_REGS_SIZE 8192 + +/** Driver private state */ +struct b44_private { + struct net_device *netdev; + struct pci_device *pci; + u8 *regs; /* memory-mapped registers */ + u8 phy_addr; + + struct dma_desc *tx; + struct io_buffer *tx_iobuf[B44_RING_SIZE]; + u32 tx_cur; /* next available descriptor */ + u32 tx_dirty; /* oldest pending descriptor */ + + struct dma_desc *rx; + struct io_buffer *rx_iobuf[B44_RING_SIZE]; + u32 rx_cur; /* next descriptor to read */ +}; + + +static void ssb_core_reset ( struct b44_private *bp ); +static void ssb_core_disable ( struct b44_private *bp ); +static u32 ssb_pci_setup ( struct b44_private *bp, u32 cores ); + +static void b44_chip_reset ( struct b44_private *bp, int reset_kind ); +static void b44_init_hw ( struct b44_private *bp, int reset_kind ); +static void b44_cam_write ( struct b44_private *bp, u8 *data, int index ); +static void b44_set_mac_addr ( struct b44_private *bp ); +static void b44_set_rx_mode ( struct net_device *netdev ); +static void b44_halt(struct b44_private *); + +static int b44_phy_reset ( struct b44_private *bp ); +static int b44_phy_write ( struct b44_private *bp, int reg, u32 val ); +static int b44_phy_read ( struct b44_private *bp, int reg, u32 *val ); + +static int b44_init_tx_ring ( struct b44_private *bp ); +static void b44_free_tx_ring ( struct b44_private *bp ); +static int b44_init_rx_ring ( struct b44_private *bp ); +static void b44_free_rx_ring ( struct b44_private *bp ); +static void b44_rx_refill ( struct b44_private *bp, u32 pending ); +static void b44_populate_rx_descriptor (struct b44_private *bp, u32 index); + +static int b44_probe ( struct pci_device *pci, + const struct pci_device_id *id ); +static void b44_remove ( struct pci_device *pci ); + +static int b44_open ( struct net_device *netdev ); +static void b44_close ( struct net_device *netdev ); +static void b44_irq ( struct net_device *netdev, int enable ); +static void b44_poll ( struct net_device *netdev ); +static void b44_process_rx_packets ( struct b44_private *bp ); +static int b44_transmit ( struct net_device *netdev, + struct io_buffer *iobuf ); + +static struct net_device_operations b44_operations; + +#endif /* _B44_H */ diff --git a/src/include/gpxe/errfile.h b/src/include/gpxe/errfile.h index c851c7d5..a3d6d37b 100644 --- a/src/include/gpxe/errfile.h +++ b/src/include/gpxe/errfile.h @@ -107,6 +107,7 @@ #define ERRFILE_mtnic ( ERRFILE_DRIVER | 0x004a0000 ) #define ERRFILE_phantom ( ERRFILE_DRIVER | 0x004b0000 ) #define ERRFILE_ne2k_isa ( ERRFILE_DRIVER | 0x004c0000 ) +#define ERRFILE_b44 ( ERRFILE_DRIVER | 0x004d0000 ) #define ERRFILE_scsi ( ERRFILE_DRIVER | 0x00700000 ) #define ERRFILE_arbel ( ERRFILE_DRIVER | 0x00710000 ) |