diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/r6040.c | 103 |
1 files changed, 50 insertions, 53 deletions
diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c index 6a6329e6412..a106add09fe 100644 --- a/drivers/net/r6040.c +++ b/drivers/net/r6040.c @@ -126,8 +126,8 @@ #define TX_DCNT 0x80 /* TX descriptor count */ #define RX_DCNT 0x80 /* RX descriptor count */ #define MAX_BUF_SIZE 0x600 -#define ALLOC_DESC_SIZE ((TX_DCNT+RX_DCNT) * \ - sizeof(struct r6040_descriptor) + 0x10) +#define RX_DESC_SIZE (RX_DCNT * sizeof(struct r6040_descriptor)) +#define TX_DESC_SIZE (TX_DCNT * sizeof(struct r6040_descriptor)) #define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */ #define MCAST_MAX 4 /* Max number multicast addresses to filter */ @@ -164,10 +164,12 @@ struct r6040_private { struct r6040_descriptor *rx_remove_ptr; struct r6040_descriptor *tx_insert_ptr; struct r6040_descriptor *tx_remove_ptr; + struct r6040_descriptor *rx_ring; + struct r6040_descriptor *tx_ring; + dma_addr_t rx_ring_dma; + dma_addr_t tx_ring_dma; u16 tx_free_desc, rx_free_desc, phy_addr, phy_mode; u16 mcr0, mcr1; - dma_addr_t desc_dma; - char *desc_pool; u16 switch_sig; struct net_device *dev; struct mii_if_info mii_if; @@ -291,6 +293,7 @@ static void r6040_down(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); void __iomem *ioaddr = lp->base; + struct pci_dev *pdev = lp->pdev; int i; int limit = 2048; u16 *adrp; @@ -334,8 +337,8 @@ static void r6040_down(struct net_device *dev) } /* Free Descriptor memory */ - pci_free_consistent(lp->pdev, ALLOC_DESC_SIZE, - lp->desc_pool, lp->desc_dma); + pci_free_consistent(pdev, RX_DESC_SIZE, lp->rx_ring, lp->rx_ring_dma); + pci_free_consistent(pdev, TX_DESC_SIZE, lp->tx_ring, lp->tx_ring_dma); } static int @@ -577,67 +580,53 @@ static void r6040_poll_controller(struct net_device *dev) #endif +static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring, + dma_addr_t desc_dma, int size) +{ + struct r6040_descriptor *desc = desc_ring; + dma_addr_t mapping = desc_dma; + + while (size-- > 0) { + mapping += sizeof(sizeof(*desc)); + desc->ndesc = cpu_to_le32(mapping); + desc->vndescp = desc + 1; + desc++; + } + desc--; + desc->ndesc = cpu_to_le32(desc_dma); + desc->vndescp = desc_ring; +} + /* Init RDC MAC */ static void r6040_up(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); - struct r6040_descriptor *descptr; void __iomem *ioaddr = lp->base; - int i; - __le32 tmp_addr; - dma_addr_t desc_dma, start_dma; /* Initialize */ lp->tx_free_desc = TX_DCNT; lp->rx_free_desc = 0; /* Init descriptor */ - memset(lp->desc_pool, 0, ALLOC_DESC_SIZE); /* Let all descriptor = 0 */ - lp->tx_insert_ptr = (struct r6040_descriptor *)lp->desc_pool; - lp->tx_remove_ptr = lp->tx_insert_ptr; - lp->rx_insert_ptr = (struct r6040_descriptor *)lp->tx_insert_ptr + - TX_DCNT; - lp->rx_remove_ptr = lp->rx_insert_ptr; + lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring; + lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring; /* Init TX descriptor */ - descptr = lp->tx_insert_ptr; - desc_dma = lp->desc_dma; - start_dma = desc_dma; - for (i = 0; i < TX_DCNT; i++) { - descptr->ndesc = cpu_to_le32(desc_dma + - sizeof(struct r6040_descriptor)); - descptr->vndescp = (descptr + 1); - descptr = (descptr + 1); - desc_dma += sizeof(struct r6040_descriptor); - } - (descptr - 1)->ndesc = cpu_to_le32(start_dma); - (descptr - 1)->vndescp = lp->tx_insert_ptr; + r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT); /* Init RX descriptor */ - start_dma = desc_dma; - descptr = lp->rx_insert_ptr; - for (i = 0; i < RX_DCNT; i++) { - descptr->ndesc = cpu_to_le32(desc_dma + - sizeof(struct r6040_descriptor)); - descptr->vndescp = (descptr + 1); - descptr = (descptr + 1); - desc_dma += sizeof(struct r6040_descriptor); - } - (descptr - 1)->ndesc = cpu_to_le32(start_dma); - (descptr - 1)->vndescp = lp->rx_insert_ptr; + r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT); /* Allocate buffer for RX descriptor */ rx_buf_alloc(lp, dev); - /* TX and RX descriptor start Register */ - tmp_addr = cpu_to_le32((u32)lp->tx_insert_ptr); - tmp_addr = virt_to_bus((volatile void *)tmp_addr); - /* Lower 16-bits to MTD_SA0 */ - iowrite16(tmp_addr, ioaddr + MTD_SA0); - /* Higher 16-bits to MTD_SA1 */ - iowrite16((u16)(tmp_addr >> 16), ioaddr + MTD_SA1); - tmp_addr = cpu_to_le32((u32)lp->rx_insert_ptr); - tmp_addr = virt_to_bus((volatile void *)tmp_addr); - iowrite16(tmp_addr, ioaddr + MRD_SA0); - iowrite16((u16)(tmp_addr >> 16), ioaddr + MRD_SA1); + /* + * TX and RX descriptor start registers. + * Lower 16-bits to MxD_SA0. Higher 16-bits to MxD_SA1. + */ + iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0); + iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1); + + iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0); + iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1); /* Buffer Size Register */ iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR); @@ -743,10 +732,18 @@ r6040_open(struct net_device *dev) r6040_mac_address(dev); /* Allocate Descriptor memory */ - lp->desc_pool = pci_alloc_consistent(lp->pdev, - ALLOC_DESC_SIZE, &lp->desc_dma); - if (!lp->desc_pool) + lp->rx_ring = + pci_alloc_consistent(lp->pdev, RX_DESC_SIZE, &lp->rx_ring_dma); + if (!lp->rx_ring) + return -ENOMEM; + + lp->tx_ring = + pci_alloc_consistent(lp->pdev, TX_DESC_SIZE, &lp->tx_ring_dma); + if (!lp->tx_ring) { + pci_free_consistent(lp->pdev, RX_DESC_SIZE, lp->rx_ring, + lp->rx_ring_dma); return -ENOMEM; + } r6040_up(dev); |