diff options
Diffstat (limited to 'drivers/net/pasemi_mac.c')
| -rw-r--r-- | drivers/net/pasemi_mac.c | 1492 |
1 files changed, 0 insertions, 1492 deletions
diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c deleted file mode 100644 index 9f9a421c99b..00000000000 --- a/drivers/net/pasemi_mac.c +++ /dev/null @@ -1,1492 +0,0 @@ -/* - * Copyright (C) 2006-2007 PA Semi, Inc - * - * Driver for the PA Semi PWRficient onchip 1G/10G Ethernet MACs - * - * This program is free software; you can redistribute 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/interrupt.h> -#include <linux/dmaengine.h> -#include <linux/delay.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <asm/dma-mapping.h> -#include <linux/in.h> -#include <linux/skbuff.h> - -#include <linux/ip.h> -#include <linux/tcp.h> -#include <net/checksum.h> - -#include <asm/irq.h> -#include <asm/firmware.h> - -#include "pasemi_mac.h" - -/* We have our own align, since ppc64 in general has it at 0 because - * of design flaws in some of the server bridge chips. However, for - * PWRficient doing the unaligned copies is more expensive than doing - * unaligned DMA, so make sure the data is aligned instead. - */ -#define LOCAL_SKB_ALIGN 2 - -/* TODO list - * - * - Multicast support - * - Large MTU support - * - SW LRO - * - Multiqueue RX/TX - */ - - -/* Must be a power of two */ -#define RX_RING_SIZE 4096 -#define TX_RING_SIZE 4096 - -#define DEFAULT_MSG_ENABLE \ - (NETIF_MSG_DRV | \ - NETIF_MSG_PROBE | \ - NETIF_MSG_LINK | \ - NETIF_MSG_TIMER | \ - NETIF_MSG_IFDOWN | \ - NETIF_MSG_IFUP | \ - NETIF_MSG_RX_ERR | \ - NETIF_MSG_TX_ERR) - -#define TX_RING(mac, num) ((mac)->tx->ring[(num) & (TX_RING_SIZE-1)]) -#define TX_RING_INFO(mac, num) ((mac)->tx->ring_info[(num) & (TX_RING_SIZE-1)]) -#define RX_RING(mac, num) ((mac)->rx->ring[(num) & (RX_RING_SIZE-1)]) -#define RX_RING_INFO(mac, num) ((mac)->rx->ring_info[(num) & (RX_RING_SIZE-1)]) -#define RX_BUFF(mac, num) ((mac)->rx->buffers[(num) & (RX_RING_SIZE-1)]) - -#define RING_USED(ring) (((ring)->next_to_fill - (ring)->next_to_clean) \ - & ((ring)->size - 1)) -#define RING_AVAIL(ring) ((ring->size) - RING_USED(ring)) - -#define BUF_SIZE 1646 /* 1500 MTU + ETH_HLEN + VLAN_HLEN + 2 64B cachelines */ - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR ("Olof Johansson <olof@lixom.net>"); -MODULE_DESCRIPTION("PA Semi PWRficient Ethernet driver"); - -static int debug = -1; /* -1 == use DEFAULT_MSG_ENABLE as value */ -module_param(debug, int, 0); -MODULE_PARM_DESC(debug, "PA Semi MAC bitmapped debugging message enable value"); - -static struct pasdma_status *dma_status; - -static int translation_enabled(void) -{ -#if defined(CONFIG_PPC_PASEMI_IOMMU_DMA_FORCE) - return 1; -#else - return firmware_has_feature(FW_FEATURE_LPAR); -#endif -} - -static void write_iob_reg(struct pasemi_mac *mac, unsigned int reg, - unsigned int val) -{ - out_le32(mac->iob_regs+reg, val); -} - -static unsigned int read_mac_reg(struct pasemi_mac *mac, unsigned int reg) -{ - return in_le32(mac->regs+reg); -} - -static void write_mac_reg(struct pasemi_mac *mac, unsigned int reg, - unsigned int val) -{ - out_le32(mac->regs+reg, val); -} - -static unsigned int read_dma_reg(struct pasemi_mac *mac, unsigned int reg) -{ - return in_le32(mac->dma_regs+reg); -} - -static void write_dma_reg(struct pasemi_mac *mac, unsigned int reg, - unsigned int val) -{ - out_le32(mac->dma_regs+reg, val); -} - -static int pasemi_get_mac_addr(struct pasemi_mac *mac) -{ - struct pci_dev *pdev = mac->pdev; - struct device_node *dn = pci_device_to_OF_node(pdev); - int len; - const u8 *maddr; - u8 addr[6]; - - if (!dn) { - dev_dbg(&pdev->dev, - "No device node for mac, not configuring\n"); - return -ENOENT; - } - - maddr = of_get_property(dn, "local-mac-address", &len); - - if (maddr && len == 6) { - memcpy(mac->mac_addr, maddr, 6); - return 0; - } - - /* Some old versions of firmware mistakenly uses mac-address - * (and as a string) instead of a byte array in local-mac-address. - */ - - if (maddr == NULL) - maddr = of_get_property(dn, "mac-address", NULL); - - if (maddr == NULL) { - dev_warn(&pdev->dev, - "no mac address in device tree, not configuring\n"); - return -ENOENT; - } - - - if (sscanf(maddr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &addr[0], - &addr[1], &addr[2], &addr[3], &addr[4], &addr[5]) != 6) { - dev_warn(&pdev->dev, - "can't parse mac address, not configuring\n"); - return -EINVAL; - } - - memcpy(mac->mac_addr, addr, 6); - - return 0; -} - -static int pasemi_mac_unmap_tx_skb(struct pasemi_mac *mac, - struct sk_buff *skb, - dma_addr_t *dmas) -{ - int f; - int nfrags = skb_shinfo(skb)->nr_frags; - - pci_unmap_single(mac->dma_pdev, dmas[0], skb_headlen(skb), - PCI_DMA_TODEVICE); - - for (f = 0; f < nfrags; f++) { - skb_frag_t *frag = &skb_shinfo(skb)->frags[f]; - - pci_unmap_page(mac->dma_pdev, dmas[f+1], frag->size, - PCI_DMA_TODEVICE); - } - dev_kfree_skb_irq(skb); - - /* Freed descriptor slot + main SKB ptr + nfrags additional ptrs, - * aligned up to a power of 2 - */ - return (nfrags + 3) & ~1; -} - -static int pasemi_mac_setup_rx_resources(struct net_device *dev) -{ - struct pasemi_mac_rxring *ring; - struct pasemi_mac *mac = netdev_priv(dev); - int chan_id = mac->dma_rxch; - unsigned int cfg; - - ring = kzalloc(sizeof(*ring), GFP_KERNEL); - - if (!ring) - goto out_ring; - - spin_lock_init(&ring->lock); - - ring->size = RX_RING_SIZE; - ring->ring_info = kzalloc(sizeof(struct pasemi_mac_buffer) * - RX_RING_SIZE, GFP_KERNEL); - - if (!ring->ring_info) - goto out_ring_info; - - /* Allocate descriptors */ - ring->ring = dma_alloc_coherent(&mac->dma_pdev->dev, - RX_RING_SIZE * sizeof(u64), - &ring->dma, GFP_KERNEL); - - if (!ring->ring) - goto out_ring_desc; - - memset(ring->ring, 0, RX_RING_SIZE * sizeof(u64)); - - ring->buffers = dma_alloc_coherent(&mac->dma_pdev->dev, - RX_RING_SIZE * sizeof(u64), - &ring->buf_dma, GFP_KERNEL); - if (!ring->buffers) - goto out_buffers; - - memset(ring->buffers, 0, RX_RING_SIZE * sizeof(u64)); - - write_dma_reg(mac, PAS_DMA_RXCHAN_BASEL(chan_id), PAS_DMA_RXCHAN_BASEL_BRBL(ring->dma)); - - write_dma_reg(mac, PAS_DMA_RXCHAN_BASEU(chan_id), - PAS_DMA_RXCHAN_BASEU_BRBH(ring->dma >> 32) | - PAS_DMA_RXCHAN_BASEU_SIZ(RX_RING_SIZE >> 3)); - - cfg = PAS_DMA_RXCHAN_CFG_HBU(2); - - if (translation_enabled()) - cfg |= PAS_DMA_RXCHAN_CFG_CTR; - - write_dma_reg(mac, PAS_DMA_RXCHAN_CFG(chan_id), cfg); - - write_dma_reg(mac, PAS_DMA_RXINT_BASEL(mac->dma_if), - PAS_DMA_RXINT_BASEL_BRBL(ring->buf_dma)); - - write_dma_reg(mac, PAS_DMA_RXINT_BASEU(mac->dma_if), - PAS_DMA_RXINT_BASEU_BRBH(ring->buf_dma >> 32) | - PAS_DMA_RXINT_BASEU_SIZ(RX_RING_SIZE >> 3)); - - cfg = PAS_DMA_RXINT_CFG_DHL(3) | PAS_DMA_RXINT_CFG_L2 | - PAS_DMA_RXINT_CFG_LW | PAS_DMA_RXINT_CFG_RBP | - PAS_DMA_RXINT_CFG_HEN; - - if (translation_enabled()) - cfg |= PAS_DMA_RXINT_CFG_ITRR | PAS_DMA_RXINT_CFG_ITR; - - write_dma_reg(mac, PAS_DMA_RXINT_CFG(mac->dma_if), cfg); - - ring->next_to_fill = 0; - ring->next_to_clean = 0; - - snprintf(ring->irq_name, sizeof(ring->irq_name), - "%s rx", dev->name); - mac->rx = ring; - - return 0; - -out_buffers: - dma_free_coherent(&mac->dma_pdev->dev, - RX_RING_SIZE * sizeof(u64), - mac->rx->ring, mac->rx->dma); -out_ring_desc: - kfree(ring->ring_info); -out_ring_info: - kfree(ring); -out_ring: - return -ENOMEM; -} - - -static int pasemi_mac_setup_tx_resources(struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - u32 val; - int chan_id = mac->dma_txch; - struct pasemi_mac_txring *ring; - unsigned int cfg; - - ring = kzalloc(sizeof(*ring), GFP_KERNEL); - if (!ring) - goto out_ring; - - spin_lock_init(&ring->lock); - - ring->size = TX_RING_SIZE; - ring->ring_info = kzalloc(sizeof(struct pasemi_mac_buffer) * - TX_RING_SIZE, GFP_KERNEL); - if (!ring->ring_info) - goto out_ring_info; - - /* Allocate descriptors */ - ring->ring = dma_alloc_coherent(&mac->dma_pdev->dev, - TX_RING_SIZE * sizeof(u64), - &ring->dma, GFP_KERNEL); - if (!ring->ring) - goto out_ring_desc; - - memset(ring->ring, 0, TX_RING_SIZE * sizeof(u64)); - - write_dma_reg(mac, PAS_DMA_TXCHAN_BASEL(chan_id), - PAS_DMA_TXCHAN_BASEL_BRBL(ring->dma)); - val = PAS_DMA_TXCHAN_BASEU_BRBH(ring->dma >> 32); - val |= PAS_DMA_TXCHAN_BASEU_SIZ(TX_RING_SIZE >> 3); - - write_dma_reg(mac, PAS_DMA_TXCHAN_BASEU(chan_id), val); - - cfg = PAS_DMA_TXCHAN_CFG_TY_IFACE | - PAS_DMA_TXCHAN_CFG_TATTR(mac->dma_if) | - PAS_DMA_TXCHAN_CFG_UP | - PAS_DMA_TXCHAN_CFG_WT(2); - - if (translation_enabled()) - cfg |= PAS_DMA_TXCHAN_CFG_TRD | PAS_DMA_TXCHAN_CFG_TRR; - - write_dma_reg(mac, PAS_DMA_TXCHAN_CFG(chan_id), cfg); - - ring->next_to_fill = 0; - ring->next_to_clean = 0; - - snprintf(ring->irq_name, sizeof(ring->irq_name), - "%s tx", dev->name); - mac->tx = ring; - - return 0; - -out_ring_desc: - kfree(ring->ring_info); -out_ring_info: - kfree(ring); -out_ring: - return -ENOMEM; -} - -static void pasemi_mac_free_tx_resources(struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - unsigned int i, j; - struct pasemi_mac_buffer *info; - dma_addr_t dmas[MAX_SKB_FRAGS+1]; - int freed; - int start, limit; - - start = mac->tx->next_to_clean; - limit = mac->tx->next_to_fill; - - /* Compensate for when fill has wrapped and clean has not */ - if (start > limit) - limit += TX_RING_SIZE; - - for (i = start; i < limit; i += freed) { - info = &TX_RING_INFO(mac, i+1); - if (info->dma && info->skb) { - for (j = 0; j <= skb_shinfo(info->skb)->nr_frags; j++) - dmas[j] = TX_RING_INFO(mac, i+1+j).dma; - freed = pasemi_mac_unmap_tx_skb(mac, info->skb, dmas); - } else - freed = 2; - } - - for (i = 0; i < TX_RING_SIZE; i++) - TX_RING(mac, i) = 0; - - dma_free_coherent(&mac->dma_pdev->dev, - TX_RING_SIZE * sizeof(u64), - mac->tx->ring, mac->tx->dma); - - kfree(mac->tx->ring_info); - kfree(mac->tx); - mac->tx = NULL; -} - -static void pasemi_mac_free_rx_resources(struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - unsigned int i; - struct pasemi_mac_buffer *info; - - for (i = 0; i < RX_RING_SIZE; i++) { - info = &RX_RING_INFO(mac, i); - if (info->skb && info->dma) { - pci_unmap_single(mac->dma_pdev, - info->dma, - info->skb->len, - PCI_DMA_FROMDEVICE); - dev_kfree_skb_any(info->skb); - } - info->dma = 0; - info->skb = NULL; - } - - for (i = 0; i < RX_RING_SIZE; i++) - RX_RING(mac, i) = 0; - - dma_free_coherent(&mac->dma_pdev->dev, - RX_RING_SIZE * sizeof(u64), - mac->rx->ring, mac->rx->dma); - - dma_free_coherent(&mac->dma_pdev->dev, RX_RING_SIZE * sizeof(u64), - mac->rx->buffers, mac->rx->buf_dma); - - kfree(mac->rx->ring_info); - kfree(mac->rx); - mac->rx = NULL; -} - -static void pasemi_mac_replenish_rx_ring(struct net_device *dev, int limit) -{ - struct pasemi_mac *mac = netdev_priv(dev); - int fill, count; - - if (limit <= 0) - return; - - fill = mac->rx->next_to_fill; - for (count = 0; count < limit; count++) { - struct pasemi_mac_buffer *info = &RX_RING_INFO(mac, fill); - u64 *buff = &RX_BUFF(mac, fill); - struct sk_buff *skb; - dma_addr_t dma; - - /* Entry in use? */ - WARN_ON(*buff); - - /* skb might still be in there for recycle on short receives */ - if (info->skb) - skb = info->skb; - else { - skb = dev_alloc_skb(BUF_SIZE); - skb_reserve(skb, LOCAL_SKB_ALIGN); - } - - if (unlikely(!skb)) - break; - - dma = pci_map_single(mac->dma_pdev, skb->data, - BUF_SIZE - LOCAL_SKB_ALIGN, - PCI_DMA_FROMDEVICE); - - if (unlikely(dma_mapping_error(dma))) { - dev_kfree_skb_irq(info->skb); - break; - } - - info->skb = skb; - info->dma = dma; - *buff = XCT_RXB_LEN(BUF_SIZE) | XCT_RXB_ADDR(dma); - fill++; - } - - wmb(); - - write_dma_reg(mac, PAS_DMA_RXINT_INCR(mac->dma_if), count); - - mac->rx->next_to_fill = (mac->rx->next_to_fill + count) & - (RX_RING_SIZE - 1); -} - -static void pasemi_mac_restart_rx_intr(struct pasemi_mac *mac) -{ - unsigned int reg, pcnt; - /* Re-enable packet count interrupts: finally - * ack the packet count interrupt we got in rx_intr. - */ - - pcnt = *mac->rx_status & PAS_STATUS_PCNT_M; - - reg = PAS_IOB_DMA_RXCH_RESET_PCNT(pcnt) | PAS_IOB_DMA_RXCH_RESET_PINTC; - - write_iob_reg(mac, PAS_IOB_DMA_RXCH_RESET(mac->dma_rxch), reg); -} - -static void pasemi_mac_restart_tx_intr(struct pasemi_mac *mac) -{ - unsigned int reg, pcnt; - - /* Re-enable packet count interrupts */ - pcnt = *mac->tx_status & PAS_STATUS_PCNT_M; - - reg = PAS_IOB_DMA_TXCH_RESET_PCNT(pcnt) | PAS_IOB_DMA_TXCH_RESET_PINTC; - - write_iob_reg(mac, PAS_IOB_DMA_TXCH_RESET(mac->dma_txch), reg); -} - - -static inline void pasemi_mac_rx_error(struct pasemi_mac *mac, u64 macrx) -{ - unsigned int rcmdsta, ccmdsta; - - if (!netif_msg_rx_err(mac)) - return; - - rcmdsta = read_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if)); - ccmdsta = read_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch)); - - printk(KERN_ERR "pasemi_mac: rx error. macrx %016lx, rx status %lx\n", - macrx, *mac->rx_status); - - printk(KERN_ERR "pasemi_mac: rcmdsta %08x ccmdsta %08x\n", - rcmdsta, ccmdsta); -} - -static inline void pasemi_mac_tx_error(struct pasemi_mac *mac, u64 mactx) -{ - unsigned int cmdsta; - - if (!netif_msg_tx_err(mac)) - return; - - cmdsta = read_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch)); - - printk(KERN_ERR "pasemi_mac: tx error. mactx 0x%016lx, "\ - "tx status 0x%016lx\n", mactx, *mac->tx_status); - - printk(KERN_ERR "pasemi_mac: tcmdsta 0x%08x\n", cmdsta); -} - -static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit) -{ - unsigned int n; - int count; - struct pasemi_mac_buffer *info; - struct sk_buff *skb; - unsigned int len; - u64 macrx; - dma_addr_t dma; - int buf_index; - u64 eval; - - spin_lock(&mac->rx->lock); - - n = mac->rx->next_to_clean; - - prefetch(RX_RING(mac, n)); - - for (count = 0; count < limit; count++) { - macrx = RX_RING(mac, n); - - if ((macrx & XCT_MACRX_E) || - (*mac->rx_status & PAS_STATUS_ERROR)) - pasemi_mac_rx_error(mac, macrx); - - if (!(macrx & XCT_MACRX_O)) - break; - - info = NULL; - - BUG_ON(!(macrx & XCT_MACRX_RR_8BRES)); - - eval = (RX_RING(mac, n+1) & XCT_RXRES_8B_EVAL_M) >> - XCT_RXRES_8B_EVAL_S; - buf_index = eval-1; - - dma = (RX_RING(mac, n+2) & XCT_PTR_ADDR_M); - info = &RX_RING_INFO(mac, buf_index); - - skb = info->skb; - - prefetch(skb); - prefetch(&skb->data_len); - - len = (macrx & XCT_MACRX_LLEN_M) >> XCT_MACRX_LLEN_S; - - if (len < 256) { - struct sk_buff *new_skb; - - new_skb = netdev_alloc_skb(mac->netdev, - len + LOCAL_SKB_ALIGN); - if (new_skb) { - skb_reserve(new_skb, LOCAL_SKB_ALIGN); - memcpy(new_skb->data, skb->data, len); - /* save the skb in buffer_info as good */ - skb = new_skb; - } - /* else just continue with the old one */ - } else - info->skb = NULL; - - pci_unmap_single(mac->dma_pdev, dma, len, PCI_DMA_FROMDEVICE); - - info->dma = 0; - - skb_put(skb, len); - - if (likely((macrx & XCT_MACRX_HTY_M) == XCT_MACRX_HTY_IPV4_OK)) { - skb->ip_summed = CHECKSUM_UNNECESSARY; - skb->csum = (macrx & XCT_MACRX_CSUM_M) >> - XCT_MACRX_CSUM_S; - } else - skb->ip_summed = CHECKSUM_NONE; - - mac->netdev->stats.rx_bytes += len; - mac->netdev->stats.rx_packets++; - - skb->protocol = eth_type_trans(skb, mac->netdev); - netif_receive_skb(skb); - - RX_RING(mac, n) = 0; - RX_RING(mac, n+1) = 0; - - /* Need to zero it out since hardware doesn't, since the - * replenish loop uses it to tell when it's done. - */ - RX_BUFF(mac, buf_index) = 0; - - n += 4; - } - - if (n > RX_RING_SIZE) { - /* Errata 5971 workaround: L2 target of headers */ - write_iob_reg(mac, PAS_IOB_COM_PKTHDRCNT, 0); - n &= (RX_RING_SIZE-1); - } - - mac->rx->next_to_clean = n; - - /* Increase is in number of 16-byte entries, and since each descriptor - * with an 8BRES takes up 3x8 bytes (padded to 4x8), increase with - * count*2. - */ - write_dma_reg(mac, PAS_DMA_RXCHAN_INCR(mac->dma_rxch), count << 1); - - pasemi_mac_replenish_rx_ring(mac->netdev, count); - - spin_unlock(&mac->rx->lock); - - return count; -} - -/* Can't make this too large or we blow the kernel stack limits */ -#define TX_CLEAN_BATCHSIZE (128/MAX_SKB_FRAGS) - -static int pasemi_mac_clean_tx(struct pasemi_mac *mac) -{ - int i, j; - unsigned int start, descr_count, buf_count, batch_limit; - unsigned int ring_limit; - unsigned int total_count; - unsigned long flags; - struct sk_buff *skbs[TX_CLEAN_BATCHSIZE]; - dma_addr_t dmas[TX_CLEAN_BATCHSIZE][MAX_SKB_FRAGS+1]; - - total_count = 0; - batch_limit = TX_CLEAN_BATCHSIZE; -restart: - spin_lock_irqsave(&mac->tx->lock, flags); - - start = mac->tx->next_to_clean; - ring_limit = mac->tx->next_to_fill; - - /* Compensate for when fill has wrapped but clean has not */ - if (start > ring_limit) - ring_limit += TX_RING_SIZE; - - buf_count = 0; - descr_count = 0; - - for (i = start; - descr_count < batch_limit && i < ring_limit; - i += buf_count) { - u64 mactx = TX_RING(mac, i); - struct sk_buff *skb; - - if ((mactx & XCT_MACTX_E) || - (*mac->tx_status & PAS_STATUS_ERROR)) - pasemi_mac_tx_error(mac, mactx); - - if (unlikely(mactx & XCT_MACTX_O)) - /* Not yet transmitted */ - break; - - skb = TX_RING_INFO(mac, i+1).skb; - skbs[descr_count] = skb; - - buf_count = 2 + skb_shinfo(skb)->nr_frags; - for (j = 0; j <= skb_shinfo(skb)->nr_frags; j++) - dmas[descr_count][j] = TX_RING_INFO(mac, i+1+j).dma; - - TX_RING(mac, i) = 0; - TX_RING(mac, i+1) = 0; - - /* Since we always fill with an even number of entries, make - * sure we skip any unused one at the end as well. - */ - if (buf_count & 1) - buf_count++; - descr_count++; - } - mac->tx->next_to_clean = i & (TX_RING_SIZE-1); - - spin_unlock_irqrestore(&mac->tx->lock, flags); - netif_wake_queue(mac->netdev); - - for (i = 0; i < descr_count; i++) - pasemi_mac_unmap_tx_skb(mac, skbs[i], dmas[i]); - - total_count += descr_count; - - /* If the batch was full, try to clean more */ - if (descr_count == batch_limit) - goto restart; - - return total_count; -} - - -static irqreturn_t pasemi_mac_rx_intr(int irq, void *data) -{ - struct net_device *dev = data; - struct pasemi_mac *mac = netdev_priv(dev); - unsigned int reg; - - if (!(*mac->rx_status & PAS_STATUS_CAUSE_M)) - return IRQ_NONE; - - /* Don't reset packet count so it won't fire again but clear - * all others. - */ - - reg = 0; - if (*mac->rx_status & PAS_STATUS_SOFT) - reg |= PAS_IOB_DMA_RXCH_RESET_SINTC; - if (*mac->rx_status & PAS_STATUS_ERROR) - reg |= PAS_IOB_DMA_RXCH_RESET_DINTC; - if (*mac->rx_status & PAS_STATUS_TIMER) - reg |= PAS_IOB_DMA_RXCH_RESET_TINTC; - - netif_rx_schedule(dev, &mac->napi); - - write_iob_reg(mac, PAS_IOB_DMA_RXCH_RESET(mac->dma_rxch), reg); - - return IRQ_HANDLED; -} - -static irqreturn_t pasemi_mac_tx_intr(int irq, void *data) -{ - struct net_device *dev = data; - struct pasemi_mac *mac = netdev_priv(dev); - unsigned int reg, pcnt; - - if (!(*mac->tx_status & PAS_STATUS_CAUSE_M)) - return IRQ_NONE; - - pasemi_mac_clean_tx(mac); - - pcnt = *mac->tx_status & PAS_STATUS_PCNT_M; - - reg = PAS_IOB_DMA_TXCH_RESET_PCNT(pcnt) | PAS_IOB_DMA_TXCH_RESET_PINTC; - - if (*mac->tx_status & PAS_STATUS_SOFT) - reg |= PAS_IOB_DMA_TXCH_RESET_SINTC; - if (*mac->tx_status & PAS_STATUS_ERROR) - reg |= PAS_IOB_DMA_TXCH_RESET_DINTC; - - write_iob_reg(mac, PAS_IOB_DMA_TXCH_RESET(mac->dma_txch), reg); - - return IRQ_HANDLED; -} - -static void pasemi_adjust_link(struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - int msg; - unsigned int flags; - unsigned int new_flags; - - if (!mac->phydev->link) { - /* If no link, MAC speed settings don't matter. Just report - * link down and return. - */ - if (mac->link && netif_msg_link(mac)) - printk(KERN_INFO "%s: Link is down.\n", dev->name); - - netif_carrier_off(dev); - mac->link = 0; - - return; - } else - netif_carrier_on(dev); - - flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG); - new_flags = flags & ~(PAS_MAC_CFG_PCFG_HD | PAS_MAC_CFG_PCFG_SPD_M | - PAS_MAC_CFG_PCFG_TSR_M); - - if (!mac->phydev->duplex) - new_flags |= PAS_MAC_CFG_PCFG_HD; - - switch (mac->phydev->speed) { - case 1000: - new_flags |= PAS_MAC_CFG_PCFG_SPD_1G | - PAS_MAC_CFG_PCFG_TSR_1G; - break; - case 100: - new_flags |= PAS_MAC_CFG_PCFG_SPD_100M | - PAS_MAC_CFG_PCFG_TSR_100M; - break; - case 10: - new_flags |= PAS_MAC_CFG_PCFG_SPD_10M | - PAS_MAC_CFG_PCFG_TSR_10M; - break; - default: - printk("Unsupported speed %d\n", mac->phydev->speed); - } - - /* Print on link or speed/duplex change */ - msg = mac->link != mac->phydev->link || flags != new_flags; - - mac->duplex = mac->phydev->duplex; - mac->speed = mac->phydev->speed; - mac->link = mac->phydev->link; - - if (new_flags != flags) - write_mac_reg(mac, PAS_MAC_CFG_PCFG, new_flags); - - if (msg && netif_msg_link(mac)) - printk(KERN_INFO "%s: Link is up at %d Mbps, %s duplex.\n", - dev->name, mac->speed, mac->duplex ? "full" : "half"); -} - -static int pasemi_mac_phy_init(struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - struct device_node *dn, *phy_dn; - struct phy_device *phydev; - unsigned int phy_id; - const phandle *ph; - const unsigned int *prop; - struct resource r; - int ret; - - dn = pci_device_to_OF_node(mac->pdev); - ph = of_get_property(dn, "phy-handle", NULL); - if (!ph) - return -ENODEV; - phy_dn = of_find_node_by_phandle(*ph); - - prop = of_get_property(phy_dn, "reg", NULL); - ret = of_address_to_resource(phy_dn->parent, 0, &r); - if (ret) - goto err; - - phy_id = *prop; - snprintf(mac->phy_id, BUS_ID_SIZE, PHY_ID_FMT, (int)r.start, phy_id); - - of_node_put(phy_dn); - - mac->link = 0; - mac->speed = 0; - mac->duplex = -1; - - phydev = phy_connect(dev, mac->phy_id, &pasemi_adjust_link, 0, PHY_INTERFACE_MODE_SGMII); - - if (IS_ERR(phydev)) { - printk(KERN_ERR "%s: Could not attach to phy\n", dev->name); - return PTR_ERR(phydev); - } - - mac->phydev = phydev; - - return 0; - -err: - of_node_put(phy_dn); - return -ENODEV; -} - - -static int pasemi_mac_open(struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - int base_irq; - unsigned int flags; - int ret; - - /* enable rx section */ - write_dma_reg(mac, PAS_DMA_COM_RXCMD, PAS_DMA_COM_RXCMD_EN); - - /* enable tx section */ - write_dma_reg(mac, PAS_DMA_COM_TXCMD, PAS_DMA_COM_TXCMD_EN); - - flags = PAS_MAC_CFG_TXP_FCE | PAS_MAC_CFG_TXP_FPC(3) | - PAS_MAC_CFG_TXP_SL(3) | PAS_MAC_CFG_TXP_COB(0xf) | - PAS_MAC_CFG_TXP_TIFT(8) | PAS_MAC_CFG_TXP_TIFG(12); - - write_mac_reg(mac, PAS_MAC_CFG_TXP, flags); - - write_iob_reg(mac, PAS_IOB_DMA_RXCH_CFG(mac->dma_rxch), - PAS_IOB_DMA_RXCH_CFG_CNTTH(0)); - - write_iob_reg(mac, PAS_IOB_DMA_TXCH_CFG(mac->dma_txch), - PAS_IOB_DMA_TXCH_CFG_CNTTH(128)); - - /* Clear out any residual packet count state from firmware */ - pasemi_mac_restart_rx_intr(mac); - pasemi_mac_restart_tx_intr(mac); - - /* 0xffffff is max value, about 16ms */ - write_iob_reg(mac, PAS_IOB_DMA_COM_TIMEOUTCFG, - PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(0xffffff)); - - ret = pasemi_mac_setup_rx_resources(dev); - if (ret) - goto out_rx_resources; - - ret = pasemi_mac_setup_tx_resources(dev); - if (ret) - goto out_tx_resources; - - write_mac_reg(mac, PAS_MAC_IPC_CHNL, - PAS_MAC_IPC_CHNL_DCHNO(mac->dma_rxch) | - PAS_MAC_IPC_CHNL_BCH(mac->dma_rxch)); - - /* enable rx if */ - write_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if), - PAS_DMA_RXINT_RCMDSTA_EN | - PAS_DMA_RXINT_RCMDSTA_DROPS_M | - PAS_DMA_RXINT_RCMDSTA_BP | - PAS_DMA_RXINT_RCMDSTA_OO | - PAS_DMA_RXINT_RCMDSTA_BT); - - /* enable rx channel */ - write_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch), - PAS_DMA_RXCHAN_CCMDSTA_EN | - PAS_DMA_RXCHAN_CCMDSTA_DU | - PAS_DMA_RXCHAN_CCMDSTA_OD | - PAS_DMA_RXCHAN_CCMDSTA_FD | - PAS_DMA_RXCHAN_CCMDSTA_DT); - - /* enable tx channel */ - write_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch), - PAS_DMA_TXCHAN_TCMDSTA_EN | - PAS_DMA_TXCHAN_TCMDSTA_SZ | - PAS_DMA_TXCHAN_TCMDSTA_DB | - PAS_DMA_TXCHAN_TCMDSTA_DE | - PAS_DMA_TXCHAN_TCMDSTA_DA); - - pasemi_mac_replenish_rx_ring(dev, RX_RING_SIZE); - - write_dma_reg(mac, PAS_DMA_RXCHAN_INCR(mac->dma_rxch), RX_RING_SIZE>>1); - - flags = PAS_MAC_CFG_PCFG_S1 | PAS_MAC_CFG_PCFG_PE | - PAS_MAC_CFG_PCFG_PR | PAS_MAC_CFG_PCFG_CE; - - if (mac->type == MAC_TYPE_GMAC) - flags |= PAS_MAC_CFG_PCFG_TSR_1G | PAS_MAC_CFG_PCFG_SPD_1G; - else - flags |= PAS_MAC_CFG_PCFG_TSR_10G | PAS_MAC_CFG_PCFG_SPD_10G; - - /* Enable interface in MAC */ - write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags); - - ret = pasemi_mac_phy_init(dev); - /* Some configs don't have PHYs (XAUI etc), so don't complain about - * failed init due to -ENODEV. - */ - if (ret && ret != -ENODEV) - dev_warn(&mac->pdev->dev, "phy init failed: %d\n", ret); - - netif_start_queue(dev); - napi_enable(&mac->napi); - - /* Interrupts are a bit different for our DMA controller: While - * it's got one a regular PCI device header, the interrupt there - * is really the base of the range it's using. Each tx and rx - * channel has it's own interrupt source. - */ - - base_irq = virq_to_hw(mac->dma_pdev->irq); - - mac->tx_irq = irq_create_mapping(NULL, base_irq + mac->dma_txch); - mac->rx_irq = irq_create_mapping(NULL, base_irq + 20 + mac->dma_txch); - - ret = request_irq(mac->tx_irq, &pasemi_mac_tx_intr, IRQF_DISABLED, - mac->tx->irq_name, dev); - if (ret) { - dev_err(&mac->pdev->dev, "request_irq of irq %d failed: %d\n", - base_irq + mac->dma_txch, ret); - goto out_tx_int; - } - - ret = request_irq(mac->rx_irq, &pasemi_mac_rx_intr, IRQF_DISABLED, - mac->rx->irq_name, dev); - if (ret) { - dev_err(&mac->pdev->dev, "request_irq of irq %d failed: %d\n", - base_irq + 20 + mac->dma_rxch, ret); - goto out_rx_int; - } - - if (mac->phydev) - phy_start(mac->phydev); - - return 0; - -out_rx_int: - free_irq(mac->tx_irq, dev); -out_tx_int: - napi_disable(&mac->napi); - netif_stop_queue(dev); - pasemi_mac_free_tx_resources(dev); -out_tx_resources: - pasemi_mac_free_rx_resources(dev); -out_rx_resources: - - return ret; -} - -#define MAX_RETRIES 5000 - -static int pasemi_mac_close(struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - unsigned int sta; - int retries; - - if (mac->phydev) { - phy_stop(mac->phydev); - phy_disconnect(mac->phydev); - } - - netif_stop_queue(dev); - napi_disable(&mac->napi); - - sta = read_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if)); - if (sta & (PAS_DMA_RXINT_RCMDSTA_BP | - PAS_DMA_RXINT_RCMDSTA_OO | - PAS_DMA_RXINT_RCMDSTA_BT)) - printk(KERN_DEBUG "pasemi_mac: rcmdsta error: 0x%08x\n", sta); - - sta = read_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch)); - if (sta & (PAS_DMA_RXCHAN_CCMDSTA_DU | - PAS_DMA_RXCHAN_CCMDSTA_OD | - PAS_DMA_RXCHAN_CCMDSTA_FD | - PAS_DMA_RXCHAN_CCMDSTA_DT)) - printk(KERN_DEBUG "pasemi_mac: ccmdsta error: 0x%08x\n", sta); - - sta = read_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch)); - if (sta & (PAS_DMA_TXCHAN_TCMDSTA_SZ | - PAS_DMA_TXCHAN_TCMDSTA_DB | - PAS_DMA_TXCHAN_TCMDSTA_DE | - PAS_DMA_TXCHAN_TCMDSTA_DA)) - printk(KERN_DEBUG "pasemi_mac: tcmdsta error: 0x%08x\n", sta); - - /* Clean out any pending buffers */ - pasemi_mac_clean_tx(mac); - pasemi_mac_clean_rx(mac, RX_RING_SIZE); - - /* Disable interface */ - write_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch), PAS_DMA_TXCHAN_TCMDSTA_ST); - write_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if), PAS_DMA_RXINT_RCMDSTA_ST); - write_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch), PAS_DMA_RXCHAN_CCMDSTA_ST); - - for (retries = 0; retries < MAX_RETRIES; retries++) { - sta = read_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch)); - if (!(sta & PAS_DMA_TXCHAN_TCMDSTA_ACT)) - break; - cond_resched(); - } - - if (sta & PAS_DMA_TXCHAN_TCMDSTA_ACT) - dev_err(&mac->dma_pdev->dev, "Failed to stop tx channel\n"); - - for (retries = 0; retries < MAX_RETRIES; retries++) { - sta = read_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch)); - if (!(sta & PAS_DMA_RXCHAN_CCMDSTA_ACT)) - break; - cond_resched(); - } - - if (sta & PAS_DMA_RXCHAN_CCMDSTA_ACT) - dev_err(&mac->dma_pdev->dev, "Failed to stop rx channel\n"); - - for (retries = 0; retries < MAX_RETRIES; retries++) { - sta = read_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if)); - if (!(sta & PAS_DMA_RXINT_RCMDSTA_ACT)) - break; - cond_resched(); - } - - if (sta & PAS_DMA_RXINT_RCMDSTA_ACT) - dev_err(&mac->dma_pdev->dev, "Failed to stop rx interface\n"); - - /* Then, disable the channel. This must be done separately from - * stopping, since you can't disable when active. - */ - - write_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch), 0); - write_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch), 0); - write_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if), 0); - - free_irq(mac->tx_irq, dev); - free_irq(mac->rx_irq, dev); - - /* Free resources */ - pasemi_mac_free_rx_resources(dev); - pasemi_mac_free_tx_resources(dev); - - return 0; -} - -static int pasemi_mac_start_tx(struct sk_buff *skb, struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - struct pasemi_mac_txring *txring; - u64 dflags, mactx; - dma_addr_t map[MAX_SKB_FRAGS+1]; - unsigned int map_size[MAX_SKB_FRAGS+1]; - unsigned long flags; - int i, nfrags; - - dflags = XCT_MACTX_O | XCT_MACTX_ST | XCT_MACTX_SS | XCT_MACTX_CRC_PAD; - - if (skb->ip_summed == CHECKSUM_PARTIAL) { - const unsigned char *nh = skb_network_header(skb); - - switch (ip_hdr(skb)->protocol) { - case IPPROTO_TCP: - dflags |= XCT_MACTX_CSUM_TCP; - dflags |= XCT_MACTX_IPH(skb_network_header_len(skb) >> 2); - dflags |= XCT_MACTX_IPO(nh - skb->data); - break; - case IPPROTO_UDP: - dflags |= XCT_MACTX_CSUM_UDP; - dflags |= XCT_MACTX_IPH(skb_network_header_len(skb) >> 2); - dflags |= XCT_MACTX_IPO(nh - skb->data); - break; - } - } - - nfrags = skb_shinfo(skb)->nr_frags; - - map[0] = pci_map_single(mac->dma_pdev, skb->data, skb_headlen(skb), - PCI_DMA_TODEVICE); - map_size[0] = skb_headlen(skb); - if (dma_mapping_error(map[0])) - goto out_err_nolock; - - for (i = 0; i < nfrags; i++) { - skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; - - map[i+1] = pci_map_page(mac->dma_pdev, frag->page, - frag->page_offset, frag->size, - PCI_DMA_TODEVICE); - map_size[i+1] = frag->size; - if (dma_mapping_error(map[i+1])) { - nfrags = i; - goto out_err_nolock; - } - } - - mactx = dflags | XCT_MACTX_LLEN(skb->len); - - txring = mac->tx; - - spin_lock_irqsave(&txring->lock, flags); - - /* Avoid stepping on the same cache line that the DMA controller - * is currently about to send, so leave at least 8 words available. - * Total free space needed is mactx + fragments + 8 - */ - if (RING_AVAIL(txring) < nfrags + 10) { - /* no room -- stop the queue and wait for tx intr */ - netif_stop_queue(dev); - goto out_err; - } - - TX_RING(mac, txring->next_to_fill) = mactx; - txring->next_to_fill++; - TX_RING_INFO(mac, txring->next_to_fill).skb = skb; - for (i = 0; i <= nfrags; i++) { - TX_RING(mac, txring->next_to_fill+i) = - XCT_PTR_LEN(map_size[i]) | XCT_PTR_ADDR(map[i]); - TX_RING_INFO(mac, txring->next_to_fill+i).dma = map[i]; - } - - /* We have to add an even number of 8-byte entries to the ring - * even if the last one is unused. That means always an odd number - * of pointers + one mactx descriptor. - */ - if (nfrags & 1) - nfrags++; - - txring->next_to_fill = (txring->next_to_fill + nfrags + 1) & - (TX_RING_SIZE-1); - - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - - spin_unlock_irqrestore(&txring->lock, flags); - - write_dma_reg(mac, PAS_DMA_TXCHAN_INCR(mac->dma_txch), (nfrags+2) >> 1); - - return NETDEV_TX_OK; - -out_err: - spin_unlock_irqrestore(&txring->lock, flags); -out_err_nolock: - while (nfrags--) - pci_unmap_single(mac->dma_pdev, map[nfrags], map_size[nfrags], - PCI_DMA_TODEVICE); - - return NETDEV_TX_BUSY; -} - -static void pasemi_mac_set_rx_mode(struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - unsigned int flags; - - flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG); - - /* Set promiscuous */ - if (dev->flags & IFF_PROMISC) - flags |= PAS_MAC_CFG_PCFG_PR; - else - flags &= ~PAS_MAC_CFG_PCFG_PR; - - write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags); -} - - -static int pasemi_mac_poll(struct napi_struct *napi, int budget) -{ - struct pasemi_mac *mac = container_of(napi, struct pasemi_mac, napi); - struct net_device *dev = mac->netdev; - int pkts; - - pasemi_mac_clean_tx(mac); - pkts = pasemi_mac_clean_rx(mac, budget); - if (pkts < budget) { - /* all done, no more packets present */ - netif_rx_complete(dev, napi); - - pasemi_mac_restart_rx_intr(mac); - } - return pkts; -} - -static void __iomem * __devinit map_onedev(struct pci_dev *p, int index) -{ - struct device_node *dn; - void __iomem *ret; - - dn = pci_device_to_OF_node(p); - if (!dn) - goto fallback; - - ret = of_iomap(dn, index); - if (!ret) - goto fallback; - - return ret; -fallback: - /* This is hardcoded and ugly, but we have some firmware versions - * that don't provide the register space in the device tree. Luckily - * they are at well-known locations so we can just do the math here. - */ - return ioremap(0xe0000000 + (p->devfn << 12), 0x2000); -} - -static int __devinit pasemi_mac_map_regs(struct pasemi_mac *mac) -{ - struct resource res; - struct device_node *dn; - int err; - - mac->dma_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa007, NULL); - if (!mac->dma_pdev) { - dev_err(&mac->pdev->dev, "Can't find DMA Controller\n"); - return -ENODEV; - } - - mac->iob_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa001, NULL); - if (!mac->iob_pdev) { - dev_err(&mac->pdev->dev, "Can't find I/O Bridge\n"); - return -ENODEV; - } - - mac->regs = map_onedev(mac->pdev, 0); - mac->dma_regs = map_onedev(mac->dma_pdev, 0); - mac->iob_regs = map_onedev(mac->iob_pdev, 0); - - if (!mac->regs || !mac->dma_regs || !mac->iob_regs) { - dev_err(&mac->pdev->dev, "Can't map registers\n"); - return -ENODEV; - } - - /* The dma status structure is located in the I/O bridge, and - * is cache coherent. - */ - if (!dma_status) { - dn = pci_device_to_OF_node(mac->iob_pdev); - if (dn) - err = of_address_to_resource(dn, 1, &res); - if (!dn || err) { - /* Fallback for old firmware */ - res.start = 0xfd800000; - res.end = res.start + 0x1000; - } - dma_status = __ioremap(res.start, res.end-res.start, 0); - } - - return 0; -} - -static int __devinit -pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent) -{ - static int index = 0; - struct net_device *dev; - struct pasemi_mac *mac; - int err; - DECLARE_MAC_BUF(mac_buf); - - err = pci_enable_device(pdev); - if (err) - return err; - - dev = alloc_etherdev(sizeof(struct pasemi_mac)); - if (dev == NULL) { - dev_err(&pdev->dev, - "pasemi_mac: Could not allocate ethernet device.\n"); - err = -ENOMEM; - goto out_disable_device; - } - - pci_set_drvdata(pdev, dev); - SET_NETDEV_DEV(dev, &pdev->dev); - - mac = netdev_priv(dev); - - mac->pdev = pdev; - mac->netdev = dev; - - netif_napi_add(dev, &mac->napi, pasemi_mac_poll, 64); - - dev->features = NETIF_F_HW_CSUM | NETIF_F_LLTX | NETIF_F_SG; - - /* These should come out of the device tree eventually */ - mac->dma_txch = index; - mac->dma_rxch = index; - - /* We probe GMAC before XAUI, but the DMA interfaces are - * in XAUI, GMAC order. - */ - if (index < 4) - mac->dma_if = index + 2; - else - mac->dma_if = index - 4; - index++; - - switch (pdev->device) { - case 0xa005: - mac->type = MAC_TYPE_GMAC; - break; - case 0xa006: - mac->type = MAC_TYPE_XAUI; - break; - default: - err = -ENODEV; - goto out; - } - - /* get mac addr from device tree */ - if (pasemi_get_mac_addr(mac) || !is_valid_ether_addr(mac->mac_addr)) { - err = -ENODEV; - goto out; - } - memcpy(dev->dev_addr, mac->mac_addr, sizeof(mac->mac_addr)); - - dev->open = pasemi_mac_open; - dev->stop = pasemi_mac_close; - dev->hard_start_xmit = pasemi_mac_start_tx; - dev->set_multicast_list = pasemi_mac_set_rx_mode; - - err = pasemi_mac_map_regs(mac); - if (err) - goto out; - - mac->rx_status = &dma_status->rx_sta[mac->dma_rxch]; - mac->tx_status = &dma_status->tx_sta[mac->dma_txch]; - - mac->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); - - /* Enable most messages by default */ - mac->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1; - - err = register_netdev(dev); - - if (err) { - dev_err(&mac->pdev->dev, "register_netdev failed with error %d\n", - err); - goto out; - } else if netif_msg_probe(mac) - printk(KERN_INFO "%s: PA Semi %s: intf %d, txch %d, rxch %d, " - "hw addr %s\n", - dev->name, mac->type == MAC_TYPE_GMAC ? "GMAC" : "XAUI", - mac->dma_if, mac->dma_txch, mac->dma_rxch, - print_mac(mac_buf, dev->dev_addr)); - - return err; - -out: - if (mac->iob_pdev) - pci_dev_put(mac->iob_pdev); - if (mac->dma_pdev) - pci_dev_put(mac->dma_pdev); - if (mac->dma_regs) - iounmap(mac->dma_regs); - if (mac->iob_regs) - iounmap(mac->iob_regs); - if (mac->regs) - iounmap(mac->regs); - - free_netdev(dev); -out_disable_device: - pci_disable_device(pdev); - return err; - -} - -static void __devexit pasemi_mac_remove(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct pasemi_mac *mac; - - if (!netdev) - return; - - mac = netdev_priv(netdev); - - unregister_netdev(netdev); - - pci_disable_device(pdev); - pci_dev_put(mac->dma_pdev); - pci_dev_put(mac->iob_pdev); - - iounmap(mac->regs); - iounmap(mac->dma_regs); - iounmap(mac->iob_regs); - - pci_set_drvdata(pdev, NULL); - free_netdev(netdev); -} - -static struct pci_device_id pasemi_mac_pci_tbl[] = { - { PCI_DEVICE(PCI_VENDOR_ID_PASEMI, 0xa005) }, - { PCI_DEVICE(PCI_VENDOR_ID_PASEMI, 0xa006) }, - { }, -}; - -MODULE_DEVICE_TABLE(pci, pasemi_mac_pci_tbl); - -static struct pci_driver pasemi_mac_driver = { - .name = "pasemi_mac", - .id_table = pasemi_mac_pci_tbl, - .probe = pasemi_mac_probe, - .remove = __devexit_p(pasemi_mac_remove), -}; - -static void __exit pasemi_mac_cleanup_module(void) -{ - pci_unregister_driver(&pasemi_mac_driver); - __iounmap(dma_status); - dma_status = NULL; -} - -int pasemi_mac_init_module(void) -{ - return pci_register_driver(&pasemi_mac_driver); -} - -module_init(pasemi_mac_init_module); -module_exit(pasemi_mac_cleanup_module); |