diff options
Diffstat (limited to 'drivers/net/saa9730.c')
| -rw-r--r-- | drivers/net/saa9730.c | 1139 |
1 files changed, 0 insertions, 1139 deletions
diff --git a/drivers/net/saa9730.c b/drivers/net/saa9730.c deleted file mode 100644 index c65199df8a7f..000000000000 --- a/drivers/net/saa9730.c +++ /dev/null @@ -1,1139 +0,0 @@ -/* - * Copyright (C) 2000, 2005 MIPS Technologies, Inc. All rights reserved. - * Authors: Carsten Langgaard <carstenl@mips.com> - * Maciej W. Rozycki <macro@mips.com> - * Copyright (C) 2004 Ralf Baechle <ralf@linux-mips.org> - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope 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., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * SAA9730 ethernet driver. - * - * Changes: - * Angelo Dell'Aera <buffer@antifork.org> : Conversion to the new PCI API - * (pci_driver). - * Conversion to spinlocks. - * Error handling fixes. - */ - -#include <linux/init.h> -#include <linux/netdevice.h> -#include <linux/delay.h> -#include <linux/etherdevice.h> -#include <linux/module.h> -#include <linux/skbuff.h> -#include <linux/pci.h> -#include <linux/spinlock.h> -#include <linux/types.h> - -#include <asm/addrspace.h> -#include <asm/io.h> - -#include <asm/mips-boards/prom.h> - -#include "saa9730.h" - -#ifdef LAN_SAA9730_DEBUG -int lan_saa9730_debug = LAN_SAA9730_DEBUG; -#else -int lan_saa9730_debug; -#endif - -#define DRV_MODULE_NAME "saa9730" - -static struct pci_device_id saa9730_pci_tbl[] = { - { PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA9730, - PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, - { 0, } -}; - -MODULE_DEVICE_TABLE(pci, saa9730_pci_tbl); - -/* Non-zero only if the current card is a PCI with BIOS-set IRQ. */ -static unsigned int pci_irq_line; - -static void evm_saa9730_enable_lan_int(struct lan_saa9730_private *lp) -{ - writel(readl(&lp->evm_saa9730_regs->InterruptBlock1) | EVM_LAN_INT, - &lp->evm_saa9730_regs->InterruptBlock1); - writel(readl(&lp->evm_saa9730_regs->InterruptStatus1) | EVM_LAN_INT, - &lp->evm_saa9730_regs->InterruptStatus1); - writel(readl(&lp->evm_saa9730_regs->InterruptEnable1) | EVM_LAN_INT | - EVM_MASTER_EN, &lp->evm_saa9730_regs->InterruptEnable1); -} - -static void evm_saa9730_disable_lan_int(struct lan_saa9730_private *lp) -{ - writel(readl(&lp->evm_saa9730_regs->InterruptBlock1) & ~EVM_LAN_INT, - &lp->evm_saa9730_regs->InterruptBlock1); - writel(readl(&lp->evm_saa9730_regs->InterruptEnable1) & ~EVM_LAN_INT, - &lp->evm_saa9730_regs->InterruptEnable1); -} - -static void evm_saa9730_clear_lan_int(struct lan_saa9730_private *lp) -{ - writel(EVM_LAN_INT, &lp->evm_saa9730_regs->InterruptStatus1); -} - -static void evm_saa9730_block_lan_int(struct lan_saa9730_private *lp) -{ - writel(readl(&lp->evm_saa9730_regs->InterruptBlock1) & ~EVM_LAN_INT, - &lp->evm_saa9730_regs->InterruptBlock1); -} - -static void evm_saa9730_unblock_lan_int(struct lan_saa9730_private *lp) -{ - writel(readl(&lp->evm_saa9730_regs->InterruptBlock1) | EVM_LAN_INT, - &lp->evm_saa9730_regs->InterruptBlock1); -} - -static void __used show_saa9730_regs(struct net_device *dev) -{ - struct lan_saa9730_private *lp = netdev_priv(dev); - int i, j; - - printk("TxmBufferA = %p\n", lp->TxmBuffer[0][0]); - printk("TxmBufferB = %p\n", lp->TxmBuffer[1][0]); - printk("RcvBufferA = %p\n", lp->RcvBuffer[0][0]); - printk("RcvBufferB = %p\n", lp->RcvBuffer[1][0]); - - for (i = 0; i < LAN_SAA9730_BUFFERS; i++) { - for (j = 0; j < LAN_SAA9730_TXM_Q_SIZE; j++) { - printk("TxmBuffer[%d][%d] = %x\n", i, j, - le32_to_cpu(*(unsigned int *) - lp->TxmBuffer[i][j])); - } - } - for (i = 0; i < LAN_SAA9730_BUFFERS; i++) { - for (j = 0; j < LAN_SAA9730_RCV_Q_SIZE; j++) { - printk("RcvBuffer[%d][%d] = %x\n", i, j, - le32_to_cpu(*(unsigned int *) - lp->RcvBuffer[i][j])); - } - } - printk("lp->evm_saa9730_regs->InterruptBlock1 = %x\n", - readl(&lp->evm_saa9730_regs->InterruptBlock1)); - printk("lp->evm_saa9730_regs->InterruptStatus1 = %x\n", - readl(&lp->evm_saa9730_regs->InterruptStatus1)); - printk("lp->evm_saa9730_regs->InterruptEnable1 = %x\n", - readl(&lp->evm_saa9730_regs->InterruptEnable1)); - printk("lp->lan_saa9730_regs->Ok2Use = %x\n", - readl(&lp->lan_saa9730_regs->Ok2Use)); - printk("lp->NextTxmBufferIndex = %x\n", lp->NextTxmBufferIndex); - printk("lp->NextTxmPacketIndex = %x\n", lp->NextTxmPacketIndex); - printk("lp->PendingTxmBufferIndex = %x\n", - lp->PendingTxmBufferIndex); - printk("lp->PendingTxmPacketIndex = %x\n", - lp->PendingTxmPacketIndex); - printk("lp->lan_saa9730_regs->LanDmaCtl = %x\n", - readl(&lp->lan_saa9730_regs->LanDmaCtl)); - printk("lp->lan_saa9730_regs->DmaStatus = %x\n", - readl(&lp->lan_saa9730_regs->DmaStatus)); - printk("lp->lan_saa9730_regs->CamCtl = %x\n", - readl(&lp->lan_saa9730_regs->CamCtl)); - printk("lp->lan_saa9730_regs->TxCtl = %x\n", - readl(&lp->lan_saa9730_regs->TxCtl)); - printk("lp->lan_saa9730_regs->TxStatus = %x\n", - readl(&lp->lan_saa9730_regs->TxStatus)); - printk("lp->lan_saa9730_regs->RxCtl = %x\n", - readl(&lp->lan_saa9730_regs->RxCtl)); - printk("lp->lan_saa9730_regs->RxStatus = %x\n", - readl(&lp->lan_saa9730_regs->RxStatus)); - - for (i = 0; i < LAN_SAA9730_CAM_DWORDS; i++) { - writel(i, &lp->lan_saa9730_regs->CamAddress); - printk("lp->lan_saa9730_regs->CamData = %x\n", - readl(&lp->lan_saa9730_regs->CamData)); - } - - printk("dev->stats.tx_packets = %lx\n", dev->stats.tx_packets); - printk("dev->stats.tx_errors = %lx\n", dev->stats.tx_errors); - printk("dev->stats.tx_aborted_errors = %lx\n", - dev->stats.tx_aborted_errors); - printk("dev->stats.tx_window_errors = %lx\n", - dev->stats.tx_window_errors); - printk("dev->stats.tx_carrier_errors = %lx\n", - dev->stats.tx_carrier_errors); - printk("dev->stats.tx_fifo_errors = %lx\n", - dev->stats.tx_fifo_errors); - printk("dev->stats.tx_heartbeat_errors = %lx\n", - dev->stats.tx_heartbeat_errors); - printk("dev->stats.collisions = %lx\n", dev->stats.collisions); - - printk("dev->stats.rx_packets = %lx\n", dev->stats.rx_packets); - printk("dev->stats.rx_errors = %lx\n", dev->stats.rx_errors); - printk("dev->stats.rx_dropped = %lx\n", dev->stats.rx_dropped); - printk("dev->stats.rx_crc_errors = %lx\n", dev->stats.rx_crc_errors); - printk("dev->stats.rx_frame_errors = %lx\n", - dev->stats.rx_frame_errors); - printk("dev->stats.rx_fifo_errors = %lx\n", - dev->stats.rx_fifo_errors); - printk("dev->stats.rx_length_errors = %lx\n", - dev->stats.rx_length_errors); - - printk("lp->lan_saa9730_regs->DebugPCIMasterAddr = %x\n", - readl(&lp->lan_saa9730_regs->DebugPCIMasterAddr)); - printk("lp->lan_saa9730_regs->DebugLanTxStateMachine = %x\n", - readl(&lp->lan_saa9730_regs->DebugLanTxStateMachine)); - printk("lp->lan_saa9730_regs->DebugLanRxStateMachine = %x\n", - readl(&lp->lan_saa9730_regs->DebugLanRxStateMachine)); - printk("lp->lan_saa9730_regs->DebugLanTxFifoPointers = %x\n", - readl(&lp->lan_saa9730_regs->DebugLanTxFifoPointers)); - printk("lp->lan_saa9730_regs->DebugLanRxFifoPointers = %x\n", - readl(&lp->lan_saa9730_regs->DebugLanRxFifoPointers)); - printk("lp->lan_saa9730_regs->DebugLanCtlStateMachine = %x\n", - readl(&lp->lan_saa9730_regs->DebugLanCtlStateMachine)); -} - -static void lan_saa9730_buffer_init(struct lan_saa9730_private *lp) -{ - int i, j; - - /* Init RX buffers */ - for (i = 0; i < LAN_SAA9730_BUFFERS; i++) { - for (j = 0; j < LAN_SAA9730_RCV_Q_SIZE; j++) { - *(unsigned int *) lp->RcvBuffer[i][j] = - cpu_to_le32(RXSF_READY << - RX_STAT_CTL_OWNER_SHF); - } - } - - /* Init TX buffers */ - for (i = 0; i < LAN_SAA9730_BUFFERS; i++) { - for (j = 0; j < LAN_SAA9730_TXM_Q_SIZE; j++) { - *(unsigned int *) lp->TxmBuffer[i][j] = - cpu_to_le32(TXSF_EMPTY << - TX_STAT_CTL_OWNER_SHF); - } - } -} - -static void lan_saa9730_free_buffers(struct pci_dev *pdev, - struct lan_saa9730_private *lp) -{ - pci_free_consistent(pdev, lp->buffer_size, lp->buffer_start, - lp->dma_addr); -} - -static int lan_saa9730_allocate_buffers(struct pci_dev *pdev, - struct lan_saa9730_private *lp) -{ - void *Pa; - unsigned int i, j, rxoffset, txoffset; - int ret; - - /* Initialize buffer space */ - lp->DmaRcvPackets = LAN_SAA9730_RCV_Q_SIZE; - lp->DmaTxmPackets = LAN_SAA9730_TXM_Q_SIZE; - - /* Initialize Rx Buffer Index */ - lp->NextRcvPacketIndex = 0; - lp->NextRcvBufferIndex = 0; - - /* Set current buffer index & next available packet index */ - lp->NextTxmPacketIndex = 0; - lp->NextTxmBufferIndex = 0; - lp->PendingTxmPacketIndex = 0; - lp->PendingTxmBufferIndex = 0; - - /* - * Allocate all RX and TX packets in one chunk. - * The Rx and Tx packets must be PACKET_SIZE aligned. - */ - lp->buffer_size = ((LAN_SAA9730_RCV_Q_SIZE + LAN_SAA9730_TXM_Q_SIZE) * - LAN_SAA9730_PACKET_SIZE * LAN_SAA9730_BUFFERS) + - LAN_SAA9730_PACKET_SIZE; - lp->buffer_start = pci_alloc_consistent(pdev, lp->buffer_size, - &lp->dma_addr); - if (!lp->buffer_start) { - ret = -ENOMEM; - goto out; - } - - Pa = (void *)ALIGN((unsigned long)lp->buffer_start, - LAN_SAA9730_PACKET_SIZE); - - rxoffset = Pa - lp->buffer_start; - - /* Init RX buffers */ - for (i = 0; i < LAN_SAA9730_BUFFERS; i++) { - for (j = 0; j < LAN_SAA9730_RCV_Q_SIZE; j++) { - *(unsigned int *) Pa = - cpu_to_le32(RXSF_READY << - RX_STAT_CTL_OWNER_SHF); - lp->RcvBuffer[i][j] = Pa; - Pa += LAN_SAA9730_PACKET_SIZE; - } - } - - txoffset = Pa - lp->buffer_start; - - /* Init TX buffers */ - for (i = 0; i < LAN_SAA9730_BUFFERS; i++) { - for (j = 0; j < LAN_SAA9730_TXM_Q_SIZE; j++) { - *(unsigned int *) Pa = - cpu_to_le32(TXSF_EMPTY << - TX_STAT_CTL_OWNER_SHF); - lp->TxmBuffer[i][j] = Pa; - Pa += LAN_SAA9730_PACKET_SIZE; - } - } - - /* - * Set rx buffer A and rx buffer B to point to the first two buffer - * spaces. - */ - writel(lp->dma_addr + rxoffset, &lp->lan_saa9730_regs->RxBuffA); - writel(lp->dma_addr + rxoffset + - LAN_SAA9730_PACKET_SIZE * LAN_SAA9730_RCV_Q_SIZE, - &lp->lan_saa9730_regs->RxBuffB); - - /* - * Set txm_buf_a and txm_buf_b to point to the first two buffer - * space - */ - writel(lp->dma_addr + txoffset, - &lp->lan_saa9730_regs->TxBuffA); - writel(lp->dma_addr + txoffset + - LAN_SAA9730_PACKET_SIZE * LAN_SAA9730_TXM_Q_SIZE, - &lp->lan_saa9730_regs->TxBuffB); - - /* Set packet number */ - writel((lp->DmaRcvPackets << PK_COUNT_RX_A_SHF) | - (lp->DmaRcvPackets << PK_COUNT_RX_B_SHF) | - (lp->DmaTxmPackets << PK_COUNT_TX_A_SHF) | - (lp->DmaTxmPackets << PK_COUNT_TX_B_SHF), - &lp->lan_saa9730_regs->PacketCount); - - return 0; - -out: - return ret; -} - -static int lan_saa9730_cam_load(struct lan_saa9730_private *lp) -{ - unsigned int i; - unsigned char *NetworkAddress; - - NetworkAddress = (unsigned char *) &lp->PhysicalAddress[0][0]; - - for (i = 0; i < LAN_SAA9730_CAM_DWORDS; i++) { - /* First set address to where data is written */ - writel(i, &lp->lan_saa9730_regs->CamAddress); - writel((NetworkAddress[0] << 24) | (NetworkAddress[1] << 16) | - (NetworkAddress[2] << 8) | NetworkAddress[3], - &lp->lan_saa9730_regs->CamData); - NetworkAddress += 4; - } - return 0; -} - -static int lan_saa9730_cam_init(struct net_device *dev) -{ - struct lan_saa9730_private *lp = netdev_priv(dev); - unsigned int i; - - /* Copy MAC-address into all entries. */ - for (i = 0; i < LAN_SAA9730_CAM_ENTRIES; i++) { - memcpy((unsigned char *) lp->PhysicalAddress[i], - (unsigned char *) dev->dev_addr, 6); - } - - return 0; -} - -static int lan_saa9730_mii_init(struct lan_saa9730_private *lp) -{ - int i, l; - - /* Check link status, spin here till station is not busy. */ - i = 0; - while (readl(&lp->lan_saa9730_regs->StationMgmtCtl) & MD_CA_BUSY) { - i++; - if (i > 100) { - printk("Error: lan_saa9730_mii_init: timeout\n"); - return -1; - } - mdelay(1); /* wait 1 ms. */ - } - - /* Now set the control and address register. */ - writel(MD_CA_BUSY | PHY_STATUS | PHY_ADDRESS << MD_CA_PHY_SHF, - &lp->lan_saa9730_regs->StationMgmtCtl); - - /* check link status, spin here till station is not busy */ - i = 0; - while (readl(&lp->lan_saa9730_regs->StationMgmtCtl) & MD_CA_BUSY) { - i++; - if (i > 100) { - printk("Error: lan_saa9730_mii_init: timeout\n"); - return -1; - } - mdelay(1); /* wait 1 ms. */ - } - - /* Wait for 1 ms. */ - mdelay(1); - - /* Check the link status. */ - if (readl(&lp->lan_saa9730_regs->StationMgmtData) & - PHY_STATUS_LINK_UP) { - /* Link is up. */ - return 0; - } else { - /* Link is down, reset the PHY first. */ - - /* set PHY address = 'CONTROL' */ - writel(PHY_ADDRESS << MD_CA_PHY_SHF | MD_CA_WR | PHY_CONTROL, - &lp->lan_saa9730_regs->StationMgmtCtl); - - /* Wait for 1 ms. */ - mdelay(1); - - /* set 'CONTROL' = force reset and renegotiate */ - writel(PHY_CONTROL_RESET | PHY_CONTROL_AUTO_NEG | - PHY_CONTROL_RESTART_AUTO_NEG, - &lp->lan_saa9730_regs->StationMgmtData); - - /* Wait for 50 ms. */ - mdelay(50); - - /* set 'BUSY' to start operation */ - writel(MD_CA_BUSY | PHY_ADDRESS << MD_CA_PHY_SHF | MD_CA_WR | - PHY_CONTROL, &lp->lan_saa9730_regs->StationMgmtCtl); - - /* await completion */ - i = 0; - while (readl(&lp->lan_saa9730_regs->StationMgmtCtl) & - MD_CA_BUSY) { - i++; - if (i > 100) { - printk - ("Error: lan_saa9730_mii_init: timeout\n"); - return -1; - } - mdelay(1); /* wait 1 ms. */ - } - - /* Wait for 1 ms. */ - mdelay(1); - - for (l = 0; l < 2; l++) { - /* set PHY address = 'STATUS' */ - writel(MD_CA_BUSY | PHY_ADDRESS << MD_CA_PHY_SHF | - PHY_STATUS, - &lp->lan_saa9730_regs->StationMgmtCtl); - - /* await completion */ - i = 0; - while (readl(&lp->lan_saa9730_regs->StationMgmtCtl) & - MD_CA_BUSY) { - i++; - if (i > 100) { - printk - ("Error: lan_saa9730_mii_init: timeout\n"); - return -1; - } - mdelay(1); /* wait 1 ms. */ - } - - /* wait for 3 sec. */ - mdelay(3000); - - /* check the link status */ - if (readl(&lp->lan_saa9730_regs->StationMgmtData) & - PHY_STATUS_LINK_UP) { - /* link is up */ - break; - } - } - } - - return 0; -} - -static int lan_saa9730_control_init(struct lan_saa9730_private *lp) -{ - /* Initialize DMA control register. */ - writel((LANMB_ANY << DMA_CTL_MAX_XFER_SHF) | - (LANEND_LITTLE << DMA_CTL_ENDIAN_SHF) | - (LAN_SAA9730_RCV_Q_INT_THRESHOLD << DMA_CTL_RX_INT_COUNT_SHF) - | DMA_CTL_RX_INT_TO_EN | DMA_CTL_RX_INT_EN | - DMA_CTL_MAC_RX_INT_EN | DMA_CTL_MAC_TX_INT_EN, - &lp->lan_saa9730_regs->LanDmaCtl); - - /* Initial MAC control register. */ - writel((MACCM_MII << MAC_CONTROL_CONN_SHF) | MAC_CONTROL_FULL_DUP, - &lp->lan_saa9730_regs->MacCtl); - - /* Initialize CAM control register. */ - writel(CAM_CONTROL_COMP_EN | CAM_CONTROL_BROAD_ACC, - &lp->lan_saa9730_regs->CamCtl); - - /* - * Initialize CAM enable register, only turn on first entry, should - * contain own addr. - */ - writel(0x0001, &lp->lan_saa9730_regs->CamEnable); - - /* Initialize Tx control register */ - writel(TX_CTL_EN_COMP, &lp->lan_saa9730_regs->TxCtl); - - /* Initialize Rcv control register */ - writel(RX_CTL_STRIP_CRC, &lp->lan_saa9730_regs->RxCtl); - - /* Reset DMA engine */ - writel(DMA_TEST_SW_RESET, &lp->lan_saa9730_regs->DmaTest); - - return 0; -} - -static int lan_saa9730_stop(struct lan_saa9730_private *lp) -{ - int i; - - /* Stop DMA first */ - writel(readl(&lp->lan_saa9730_regs->LanDmaCtl) & - ~(DMA_CTL_EN_TX_DMA | DMA_CTL_EN_RX_DMA), - &lp->lan_saa9730_regs->LanDmaCtl); - - /* Set the SW Reset bits in DMA and MAC control registers */ - writel(DMA_TEST_SW_RESET, &lp->lan_saa9730_regs->DmaTest); - writel(readl(&lp->lan_saa9730_regs->MacCtl) | MAC_CONTROL_RESET, - &lp->lan_saa9730_regs->MacCtl); - - /* - * Wait for MAC reset to have finished. The reset bit is auto cleared - * when the reset is done. - */ - i = 0; - while (readl(&lp->lan_saa9730_regs->MacCtl) & MAC_CONTROL_RESET) { - i++; - if (i > 100) { - printk - ("Error: lan_sa9730_stop: MAC reset timeout\n"); - return -1; - } - mdelay(1); /* wait 1 ms. */ - } - - return 0; -} - -static int lan_saa9730_dma_init(struct lan_saa9730_private *lp) -{ - /* Stop lan controller. */ - lan_saa9730_stop(lp); - - writel(LAN_SAA9730_DEFAULT_TIME_OUT_CNT, - &lp->lan_saa9730_regs->Timeout); - - return 0; -} - -static int lan_saa9730_start(struct lan_saa9730_private *lp) -{ - lan_saa9730_buffer_init(lp); - - /* Initialize Rx Buffer Index */ - lp->NextRcvPacketIndex = 0; - lp->NextRcvBufferIndex = 0; - - /* Set current buffer index & next available packet index */ - lp->NextTxmPacketIndex = 0; - lp->NextTxmBufferIndex = 0; - lp->PendingTxmPacketIndex = 0; - lp->PendingTxmBufferIndex = 0; - - writel(readl(&lp->lan_saa9730_regs->LanDmaCtl) | DMA_CTL_EN_TX_DMA | - DMA_CTL_EN_RX_DMA, &lp->lan_saa9730_regs->LanDmaCtl); - - /* For Tx, turn on MAC then DMA */ - writel(readl(&lp->lan_saa9730_regs->TxCtl) | TX_CTL_TX_EN, - &lp->lan_saa9730_regs->TxCtl); - - /* For Rx, turn on DMA then MAC */ - writel(readl(&lp->lan_saa9730_regs->RxCtl) | RX_CTL_RX_EN, - &lp->lan_saa9730_regs->RxCtl); - - /* Set Ok2Use to let hardware own the buffers. */ - writel(OK2USE_RX_A | OK2USE_RX_B, &lp->lan_saa9730_regs->Ok2Use); - - return 0; -} - -static int lan_saa9730_restart(struct lan_saa9730_private *lp) -{ - lan_saa9730_stop(lp); - lan_saa9730_start(lp); - - return 0; -} - -static int lan_saa9730_tx(struct net_device *dev) -{ - struct lan_saa9730_private *lp = netdev_priv(dev); - unsigned int *pPacket; - unsigned int tx_status; - - if (lan_saa9730_debug > 5) - printk("lan_saa9730_tx interrupt\n"); - - /* Clear interrupt. */ - writel(DMA_STATUS_MAC_TX_INT, &lp->lan_saa9730_regs->DmaStatus); - - while (1) { - pPacket = lp->TxmBuffer[lp->PendingTxmBufferIndex] - [lp->PendingTxmPacketIndex]; - - /* Get status of first packet transmitted. */ - tx_status = le32_to_cpu(*pPacket); - - /* Check ownership. */ - if ((tx_status & TX_STAT_CTL_OWNER_MSK) != - (TXSF_HWDONE << TX_STAT_CTL_OWNER_SHF)) break; - - /* Check for error. */ - if (tx_status & TX_STAT_CTL_ERROR_MSK) { - if (lan_saa9730_debug > 1) - printk("lan_saa9730_tx: tx error = %x\n", - tx_status); - - dev->stats.tx_errors++; - if (tx_status & - (TX_STATUS_EX_COLL << TX_STAT_CTL_STATUS_SHF)) - dev->stats.tx_aborted_errors++; - if (tx_status & - (TX_STATUS_LATE_COLL << TX_STAT_CTL_STATUS_SHF)) - dev->stats.tx_window_errors++; - if (tx_status & - (TX_STATUS_L_CARR << TX_STAT_CTL_STATUS_SHF)) - dev->stats.tx_carrier_errors++; - if (tx_status & - (TX_STATUS_UNDER << TX_STAT_CTL_STATUS_SHF)) - dev->stats.tx_fifo_errors++; - if (tx_status & - (TX_STATUS_SQ_ERR << TX_STAT_CTL_STATUS_SHF)) - dev->stats.tx_heartbeat_errors++; - - dev->stats.collisions += - tx_status & TX_STATUS_TX_COLL_MSK; - } - - /* Free buffer. */ - *pPacket = - cpu_to_le32(TXSF_EMPTY << TX_STAT_CTL_OWNER_SHF); - - /* Update pending index pointer. */ - lp->PendingTxmPacketIndex++; - if (lp->PendingTxmPacketIndex >= LAN_SAA9730_TXM_Q_SIZE) { - lp->PendingTxmPacketIndex = 0; - lp->PendingTxmBufferIndex ^= 1; - } - } - - /* The tx buffer is no longer full. */ - netif_wake_queue(dev); - - return 0; -} - -static int lan_saa9730_rx(struct net_device *dev) -{ - struct lan_saa9730_private *lp = netdev_priv(dev); - int len = 0; - struct sk_buff *skb = 0; - unsigned int rx_status; - int BufferIndex; - int PacketIndex; - unsigned int *pPacket; - unsigned char *pData; - - if (lan_saa9730_debug > 5) - printk("lan_saa9730_rx interrupt\n"); - - /* Clear receive interrupts. */ - writel(DMA_STATUS_MAC_RX_INT | DMA_STATUS_RX_INT | - DMA_STATUS_RX_TO_INT, &lp->lan_saa9730_regs->DmaStatus); - - /* Address next packet */ - BufferIndex = lp->NextRcvBufferIndex; - PacketIndex = lp->NextRcvPacketIndex; - pPacket = lp->RcvBuffer[BufferIndex][PacketIndex]; - rx_status = le32_to_cpu(*pPacket); - - /* Process each packet. */ - while ((rx_status & RX_STAT_CTL_OWNER_MSK) == - (RXSF_HWDONE << RX_STAT_CTL_OWNER_SHF)) { - /* Check the rx status. */ - if (rx_status & (RX_STATUS_GOOD << RX_STAT_CTL_STATUS_SHF)) { - /* Received packet is good. */ - len = (rx_status & RX_STAT_CTL_LENGTH_MSK) >> - RX_STAT_CTL_LENGTH_SHF; - - pData = (unsigned char *) pPacket; - pData += 4; - skb = dev_alloc_skb(len + 2); - if (skb == 0) { - printk - ("%s: Memory squeeze, deferring packet.\n", - dev->name); - dev->stats.rx_dropped++; - } else { - dev->stats.rx_bytes += len; - dev->stats.rx_packets++; - skb_reserve(skb, 2); /* 16 byte align */ - skb_put(skb, len); /* make room */ - skb_copy_to_linear_data(skb, - (unsigned char *) pData, - len); - skb->protocol = eth_type_trans(skb, dev); - netif_rx(skb); - dev->last_rx = jiffies; - } - } else { - /* We got an error packet. */ - if (lan_saa9730_debug > 2) - printk - ("lan_saa9730_rx: We got an error packet = %x\n", - rx_status); - - dev->stats.rx_errors++; - if (rx_status & - (RX_STATUS_CRC_ERR << RX_STAT_CTL_STATUS_SHF)) - dev->stats.rx_crc_errors++; - if (rx_status & - (RX_STATUS_ALIGN_ERR << RX_STAT_CTL_STATUS_SHF)) - dev->stats.rx_frame_errors++; - if (rx_status & - (RX_STATUS_OVERFLOW << RX_STAT_CTL_STATUS_SHF)) - dev->stats.rx_fifo_errors++; - if (rx_status & - (RX_STATUS_LONG_ERR << RX_STAT_CTL_STATUS_SHF)) - dev->stats.rx_length_errors++; - } - - /* Indicate we have processed the buffer. */ - *pPacket = cpu_to_le32(RXSF_READY << RX_STAT_CTL_OWNER_SHF); - - /* Make sure A or B is available to hardware as appropriate. */ - writel(BufferIndex ? OK2USE_RX_B : OK2USE_RX_A, - &lp->lan_saa9730_regs->Ok2Use); - - /* Go to next packet in sequence. */ - lp->NextRcvPacketIndex++; - if (lp->NextRcvPacketIndex >= LAN_SAA9730_RCV_Q_SIZE) { - lp->NextRcvPacketIndex = 0; - lp->NextRcvBufferIndex ^= 1; - } - - /* Address next packet */ - BufferIndex = lp->NextRcvBufferIndex; - PacketIndex = lp->NextRcvPacketIndex; - pPacket = lp->RcvBuffer[BufferIndex][PacketIndex]; - rx_status = le32_to_cpu(*pPacket); - } - - return 0; -} - -static irqreturn_t lan_saa9730_interrupt(const int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct lan_saa9730_private *lp = netdev_priv(dev); - - if (lan_saa9730_debug > 5) - printk("lan_saa9730_interrupt\n"); - - /* Disable the EVM LAN interrupt. */ - evm_saa9730_block_lan_int(lp); - - /* Clear the EVM LAN interrupt. */ - evm_saa9730_clear_lan_int(lp); - - /* Service pending transmit interrupts. */ - if (readl(&lp->lan_saa9730_regs->DmaStatus) & DMA_STATUS_MAC_TX_INT) - lan_saa9730_tx(dev); - - /* Service pending receive interrupts. */ - if (readl(&lp->lan_saa9730_regs->DmaStatus) & - (DMA_STATUS_MAC_RX_INT | DMA_STATUS_RX_INT | - DMA_STATUS_RX_TO_INT)) lan_saa9730_rx(dev); - - /* Enable the EVM LAN interrupt. */ - evm_saa9730_unblock_lan_int(lp); - - return IRQ_HANDLED; -} - -static int lan_saa9730_open(struct net_device *dev) -{ - struct lan_saa9730_private *lp = netdev_priv(dev); - - /* Associate IRQ with lan_saa9730_interrupt */ - if (request_irq(dev->irq, &lan_saa9730_interrupt, 0, "SAA9730 Eth", - dev)) { - printk("lan_saa9730_open: Can't get irq %d\n", dev->irq); - return -EAGAIN; - } - - /* Enable the Lan interrupt in the event manager. */ - evm_saa9730_enable_lan_int(lp); - - /* Start the LAN controller */ - if (lan_saa9730_start(lp)) - return -1; - - netif_start_queue(dev); - - return 0; -} - -static int lan_saa9730_write(struct lan_saa9730_private *lp, - struct sk_buff *skb, int skblen) -{ - unsigned char *pbData = skb->data; - unsigned int len = skblen; - unsigned char *pbPacketData; - unsigned int tx_status; - int BufferIndex; - int PacketIndex; - - if (lan_saa9730_debug > 5) - printk("lan_saa9730_write: skb=%p\n", skb); - - BufferIndex = lp->NextTxmBufferIndex; - PacketIndex = lp->NextTxmPacketIndex; - - tx_status = le32_to_cpu(*(unsigned int *)lp->TxmBuffer[BufferIndex] - [PacketIndex]); - if ((tx_status & TX_STAT_CTL_OWNER_MSK) != - (TXSF_EMPTY << TX_STAT_CTL_OWNER_SHF)) { - if (lan_saa9730_debug > 4) - printk - ("lan_saa9730_write: Tx buffer not available: tx_status = %x\n", - tx_status); - return -1; - } - - lp->NextTxmPacketIndex++; - if (lp->NextTxmPacketIndex >= LAN_SAA9730_TXM_Q_SIZE) { - lp->NextTxmPacketIndex = 0; - lp->NextTxmBufferIndex ^= 1; - } - - pbPacketData = lp->TxmBuffer[BufferIndex][PacketIndex]; - pbPacketData += 4; - - /* copy the bits */ - memcpy(pbPacketData, pbData, len); - - /* Set transmit status for hardware */ - *(unsigned int *)lp->TxmBuffer[BufferIndex][PacketIndex] = - cpu_to_le32((TXSF_READY << TX_STAT_CTL_OWNER_SHF) | - (TX_STAT_CTL_INT_AFTER_TX << - TX_STAT_CTL_FRAME_SHF) | - (len << TX_STAT_CTL_LENGTH_SHF)); - - /* Make sure A or B is available to hardware as appropriate. */ - writel(BufferIndex ? OK2USE_TX_B : OK2USE_TX_A, - &lp->lan_saa9730_regs->Ok2Use); - - return 0; -} - -static void lan_saa9730_tx_timeout(struct net_device *dev) -{ - struct lan_saa9730_private *lp = netdev_priv(dev); - - /* Transmitter timeout, serious problems */ - dev->stats.tx_errors++; - printk("%s: transmit timed out, reset\n", dev->name); - /*show_saa9730_regs(dev); */ - lan_saa9730_restart(lp); - - dev->trans_start = jiffies; - netif_wake_queue(dev); -} - -static int lan_saa9730_start_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - struct lan_saa9730_private *lp = netdev_priv(dev); - unsigned long flags; - int skblen; - int len; - - if (lan_saa9730_debug > 4) - printk("Send packet: skb=%p\n", skb); - - skblen = skb->len; - - spin_lock_irqsave(&lp->lock, flags); - - len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen; - - if (lan_saa9730_write(lp, skb, skblen)) { - spin_unlock_irqrestore(&lp->lock, flags); - printk("Error when writing packet to controller: skb=%p\n", skb); - netif_stop_queue(dev); - return -1; - } - - dev->stats.tx_bytes += len; - dev->stats.tx_packets++; - - dev->trans_start = jiffies; - netif_wake_queue(dev); - dev_kfree_skb(skb); - - spin_unlock_irqrestore(&lp->lock, flags); - - return 0; -} - -static int lan_saa9730_close(struct net_device *dev) -{ - struct lan_saa9730_private *lp = netdev_priv(dev); - - if (lan_saa9730_debug > 1) - printk("lan_saa9730_close:\n"); - - netif_stop_queue(dev); - - /* Disable the Lan interrupt in the event manager. */ - evm_saa9730_disable_lan_int(lp); - - /* Stop the controller */ - if (lan_saa9730_stop(lp)) - return -1; - - free_irq(dev->irq, (void *) dev); - - return 0; -} - -static void lan_saa9730_set_multicast(struct net_device *dev) -{ - struct lan_saa9730_private *lp = netdev_priv(dev); - - /* Stop the controller */ - lan_saa9730_stop(lp); - - if (dev->flags & IFF_PROMISC) { - /* accept all packets */ - writel(CAM_CONTROL_COMP_EN | CAM_CONTROL_STATION_ACC | - CAM_CONTROL_GROUP_ACC | CAM_CONTROL_BROAD_ACC, - &lp->lan_saa9730_regs->CamCtl); - } else { - if (dev->flags & IFF_ALLMULTI || dev->mc_count) { - /* accept all multicast packets */ - /* - * Will handle the multicast stuff later. -carstenl - */ - writel(CAM_CONTROL_COMP_EN | CAM_CONTROL_GROUP_ACC | - CAM_CONTROL_BROAD_ACC, - &lp->lan_saa9730_regs->CamCtl); - } - } - - lan_saa9730_restart(lp); -} - - -static void __devexit saa9730_remove_one(struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct lan_saa9730_private *lp = netdev_priv(dev); - - if (dev) { - unregister_netdev(dev); - lan_saa9730_free_buffers(pdev, lp); - iounmap(lp->lan_saa9730_regs); - iounmap(lp->evm_saa9730_regs); - free_netdev(dev); - pci_release_regions(pdev); - pci_disable_device(pdev); - pci_set_drvdata(pdev, NULL); - } -} - - -static int lan_saa9730_init(struct net_device *dev, struct pci_dev *pdev, - unsigned long ioaddr, int irq) -{ - struct lan_saa9730_private *lp = netdev_priv(dev); - unsigned char ethernet_addr[6]; - int ret; - - if (get_ethernet_addr(ethernet_addr)) { - ret = -ENODEV; - goto out; - } - - memcpy(dev->dev_addr, ethernet_addr, 6); - dev->base_addr = ioaddr; - dev->irq = irq; - - lp->pci_dev = pdev; - - /* Set SAA9730 LAN base address. */ - lp->lan_saa9730_regs = ioremap(ioaddr + SAA9730_LAN_REGS_ADDR, - SAA9730_LAN_REGS_SIZE); - if (!lp->lan_saa9730_regs) { - ret = -ENOMEM; - goto out; - } - - /* Set SAA9730 EVM base address. */ - lp->evm_saa9730_regs = ioremap(ioaddr + SAA9730_EVM_REGS_ADDR, - SAA9730_EVM_REGS_SIZE); - if (!lp->evm_saa9730_regs) { - ret = -ENOMEM; - goto out_iounmap_lan; - } - - /* Allocate LAN RX/TX frame buffer space. */ - if ((ret = lan_saa9730_allocate_buffers(pdev, lp))) - goto out_iounmap; - - /* Stop LAN controller. */ - if ((ret = lan_saa9730_stop(lp))) - goto out_free_consistent; - - /* Initialize CAM registers. */ - if ((ret = lan_saa9730_cam_init(dev))) - goto out_free_consistent; - - /* Initialize MII registers. */ - if ((ret = lan_saa9730_mii_init(lp))) - goto out_free_consistent; - - /* Initialize control registers. */ - if ((ret = lan_saa9730_control_init(lp))) - goto out_free_consistent; - - /* Load CAM registers. */ - if ((ret = lan_saa9730_cam_load(lp))) - goto out_free_consistent; - - /* Initialize DMA context registers. */ - if ((ret = lan_saa9730_dma_init(lp))) - goto out_free_consistent; - - spin_lock_init(&lp->lock); - - dev->open = lan_saa9730_open; - dev->hard_start_xmit = lan_saa9730_start_xmit; - dev->stop = lan_saa9730_close; - dev->set_multicast_list = lan_saa9730_set_multicast; - dev->tx_timeout = lan_saa9730_tx_timeout; - dev->watchdog_timeo = (HZ >> 1); - dev->dma = 0; - - ret = register_netdev (dev); - if (ret) - goto out_free_consistent; - - return 0; - -out_free_consistent: - lan_saa9730_free_buffers(pdev, lp); -out_iounmap: - iounmap(lp->evm_saa9730_regs); -out_iounmap_lan: - iounmap(lp->lan_saa9730_regs); -out: - return ret; -} - - -static int __devinit saa9730_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) -{ - struct net_device *dev = NULL; - unsigned long pci_ioaddr; - int err; - - if (lan_saa9730_debug > 1) - printk("saa9730.c: PCI bios is present, checking for devices...\n"); - - err = pci_enable_device(pdev); - if (err) { - printk(KERN_ERR "Cannot enable PCI device, aborting.\n"); - goto out; - } - - err = pci_request_regions(pdev, DRV_MODULE_NAME); - if (err) { - printk(KERN_ERR "Cannot obtain PCI resources, aborting.\n"); - goto out_disable_pdev; - } - - pci_irq_line = pdev->irq; - /* LAN base address in located at BAR 1. */ - - pci_ioaddr = pci_resource_start(pdev, 1); - pci_set_master(pdev); - - printk("Found SAA9730 (PCI) at %lx, irq %d.\n", - pci_ioaddr, pci_irq_line); - - dev = alloc_etherdev(sizeof(struct lan_saa9730_private)); - if (!dev) - goto out_disable_pdev; - - err = lan_saa9730_init(dev, pdev, pci_ioaddr, pci_irq_line); - if (err) { - printk("LAN init failed"); - goto out_free_netdev; - } - - pci_set_drvdata(pdev, dev); - SET_NETDEV_DEV(dev, &pdev->dev); - return 0; - -out_free_netdev: - free_netdev(dev); -out_disable_pdev: - pci_disable_device(pdev); -out: - pci_set_drvdata(pdev, NULL); - return err; -} - - -static struct pci_driver saa9730_driver = { - .name = DRV_MODULE_NAME, - .id_table = saa9730_pci_tbl, - .probe = saa9730_init_one, - .remove = __devexit_p(saa9730_remove_one), -}; - - -static int __init saa9730_init(void) -{ - return pci_register_driver(&saa9730_driver); -} - -static void __exit saa9730_cleanup(void) -{ - pci_unregister_driver(&saa9730_driver); -} - -module_init(saa9730_init); -module_exit(saa9730_cleanup); - -MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>"); -MODULE_DESCRIPTION("Philips SAA9730 ethernet driver"); -MODULE_LICENSE("GPL"); |