From ded19addf9c937d83b9bfb4d73a836732569041b Mon Sep 17 00:00:00 2001 From: Jeff Kirsher Date: Sun, 15 May 2011 20:56:37 -0700 Subject: pasemic_mac*: Move the PA Semi driver Move the PA Semi driver into drivers/net/ethernet/pasemi/ and make the necessary Kconfig and Makefile changes. CC: Olof Johansson Signed-off-by: Jeff Kirsher Acked-by: Olof Johansson diff --git a/MAINTAINERS b/MAINTAINERS index c54e736..51ac08b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4785,7 +4785,7 @@ PA SEMI ETHERNET DRIVER M: Olof Johansson L: netdev@vger.kernel.org S: Maintained -F: drivers/net/pasemi_mac.* +F: drivers/net/ethernet/pasemi/* PA SEMI SMBUS DRIVER M: Olof Johansson diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 08ce280..69333fe 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -1457,15 +1457,6 @@ if NETDEV_10000 config MDIO tristate -config PASEMI_MAC - tristate "PA Semi 1/10Gbit MAC" - depends on PPC_PASEMI && PCI && INET - select PHYLIB - select INET_LRO - help - This driver supports the on-chip 1/10Gbit Ethernet controller on - PA Semi's PWRficient line of chips. - config TEHUTI tristate "Tehuti Networks 10G Ethernet" depends on PCI diff --git a/drivers/net/Makefile b/drivers/net/Makefile index cf1d5a2..5dfa4c3 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -147,8 +147,6 @@ obj-$(CONFIG_R8169) += r8169.o obj-$(CONFIG_PXA168_ETH) += pxa168_eth.o obj-$(CONFIG_BFIN_MAC) += bfin_mac.o obj-$(CONFIG_DM9000) += dm9000.o -obj-$(CONFIG_PASEMI_MAC) += pasemi_mac_driver.o -pasemi_mac_driver-objs := pasemi_mac.o pasemi_mac_ethtool.o obj-$(CONFIG_ENC28J60) += enc28j60.o obj-$(CONFIG_ETHOC) += ethoc.o obj-$(CONFIG_GRETH) += greth.o diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig index 18b634e..16c206e 100644 --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -25,6 +25,7 @@ source "drivers/net/ethernet/intel/Kconfig" source "drivers/net/ethernet/i825xx/Kconfig" source "drivers/net/ethernet/mellanox/Kconfig" source "drivers/net/ethernet/myricom/Kconfig" +source "drivers/net/ethernet/pasemi/Kconfig" source "drivers/net/ethernet/qlogic/Kconfig" source "drivers/net/ethernet/racal/Kconfig" source "drivers/net/ethernet/sfc/Kconfig" diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile index 288179b..a52dc26 100644 --- a/drivers/net/ethernet/Makefile +++ b/drivers/net/ethernet/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_NET_VENDOR_INTEL) += intel/ obj-$(CONFIG_NET_VENDOR_I825XX) += i825xx/ obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/ obj-$(CONFIG_NET_VENDOR_MYRI) += myricom/ +obj-$(CONFIG_NET_VENDOR_PASEMI) += pasemi/ obj-$(CONFIG_NET_VENDOR_QLOGIC) += qlogic/ obj-$(CONFIG_NET_VENDOR_RACAL) += racal/ obj-$(CONFIG_SFC) += sfc/ diff --git a/drivers/net/ethernet/pasemi/Kconfig b/drivers/net/ethernet/pasemi/Kconfig new file mode 100644 index 0000000..ccb79b8 --- /dev/null +++ b/drivers/net/ethernet/pasemi/Kconfig @@ -0,0 +1,29 @@ +# +# PA Semi network device configuration +# + +config NET_VENDOR_PASEMI + bool "PA Semi devices" + depends on PPC_PASEMI && PCI && INET + ---help--- + If you have a network (Ethernet) card belonging to this class, say Y + and read the Ethernet-HOWTO, available from + . + + Note that the answer to this question doesn't directly affect the + kernel: saying N will just cause the configurator to skip all + the questions about PA Semi cards. If you say Y, you will be asked for + your specific card in the following questions. + +if NET_VENDOR_PASEMI + +config PASEMI_MAC + tristate "PA Semi 1/10Gbit MAC" + depends on PPC_PASEMI && PCI && INET + select PHYLIB + select INET_LRO + ---help--- + This driver supports the on-chip 1/10Gbit Ethernet controller on + PA Semi's PWRficient line of chips. + +endif # NET_VENDOR_PASEMI diff --git a/drivers/net/ethernet/pasemi/Makefile b/drivers/net/ethernet/pasemi/Makefile new file mode 100644 index 0000000..05db543 --- /dev/null +++ b/drivers/net/ethernet/pasemi/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the A Semi network device drivers. +# + +obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o pasemi_mac_ethtool.o diff --git a/drivers/net/ethernet/pasemi/pasemi_mac.c b/drivers/net/ethernet/pasemi/pasemi_mac.c new file mode 100644 index 0000000..9ec112c --- /dev/null +++ b/drivers/net/ethernet/pasemi/pasemi_mac.c @@ -0,0 +1,1910 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include +#include +#include + +#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 + */ + +#define LRO_MAX_AGGR 64 + +#define PE_MIN_MTU 64 +#define PE_MAX_MTU 9000 +#define PE_DEF_MTU ETH_DATA_LEN + +#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) + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR ("Olof Johansson "); +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"); + +extern const struct ethtool_ops pasemi_mac_ethtool_ops; + +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(unsigned int reg, unsigned int val) +{ + pasemi_write_iob_reg(reg, val); +} + +static unsigned int read_mac_reg(const struct pasemi_mac *mac, unsigned int reg) +{ + return pasemi_read_mac_reg(mac->dma_if, reg); +} + +static void write_mac_reg(const struct pasemi_mac *mac, unsigned int reg, + unsigned int val) +{ + pasemi_write_mac_reg(mac->dma_if, reg, val); +} + +static unsigned int read_dma_reg(unsigned int reg) +{ + return pasemi_read_dma_reg(reg); +} + +static void write_dma_reg(unsigned int reg, unsigned int val) +{ + pasemi_write_dma_reg(reg, val); +} + +static struct pasemi_mac_rxring *rx_ring(const struct pasemi_mac *mac) +{ + return mac->rx; +} + +static struct pasemi_mac_txring *tx_ring(const struct pasemi_mac *mac) +{ + return mac->tx; +} + +static inline void prefetch_skb(const struct sk_buff *skb) +{ + const void *d = skb; + + prefetch(d); + prefetch(d+64); + prefetch(d+128); + prefetch(d+192); +} + +static int mac_to_intf(struct pasemi_mac *mac) +{ + struct pci_dev *pdev = mac->pdev; + u32 tmp; + int nintf, off, i, j; + int devfn = pdev->devfn; + + tmp = read_dma_reg(PAS_DMA_CAP_IFI); + nintf = (tmp & PAS_DMA_CAP_IFI_NIN_M) >> PAS_DMA_CAP_IFI_NIN_S; + off = (tmp & PAS_DMA_CAP_IFI_IOFF_M) >> PAS_DMA_CAP_IFI_IOFF_S; + + /* IOFF contains the offset to the registers containing the + * DMA interface-to-MAC-pci-id mappings, and NIN contains number + * of total interfaces. Each register contains 4 devfns. + * Just do a linear search until we find the devfn of the MAC + * we're trying to look up. + */ + + for (i = 0; i < (nintf+3)/4; i++) { + tmp = read_dma_reg(off+4*i); + for (j = 0; j < 4; j++) { + if (((tmp >> (8*j)) & 0xff) == devfn) + return i*4 + j; + } + } + return -1; +} + +static void pasemi_mac_intf_disable(struct pasemi_mac *mac) +{ + unsigned int flags; + + flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG); + flags &= ~PAS_MAC_CFG_PCFG_PE; + write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags); +} + +static void pasemi_mac_intf_enable(struct pasemi_mac *mac) +{ + unsigned int flags; + + flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG); + flags |= PAS_MAC_CFG_PCFG_PE; + write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags); +} + +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_set_mac_addr(struct net_device *dev, void *p) +{ + struct pasemi_mac *mac = netdev_priv(dev); + struct sockaddr *addr = p; + unsigned int adr0, adr1; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EINVAL; + + memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); + + adr0 = dev->dev_addr[2] << 24 | + dev->dev_addr[3] << 16 | + dev->dev_addr[4] << 8 | + dev->dev_addr[5]; + adr1 = read_mac_reg(mac, PAS_MAC_CFG_ADR1); + adr1 &= ~0xffff; + adr1 |= dev->dev_addr[0] << 8 | dev->dev_addr[1]; + + pasemi_mac_intf_disable(mac); + write_mac_reg(mac, PAS_MAC_CFG_ADR0, adr0); + write_mac_reg(mac, PAS_MAC_CFG_ADR1, adr1); + pasemi_mac_intf_enable(mac); + + return 0; +} + +static int get_skb_hdr(struct sk_buff *skb, void **iphdr, + void **tcph, u64 *hdr_flags, void *data) +{ + u64 macrx = (u64) data; + unsigned int ip_len; + struct iphdr *iph; + + /* IPv4 header checksum failed */ + if ((macrx & XCT_MACRX_HTY_M) != XCT_MACRX_HTY_IPV4_OK) + return -1; + + /* non tcp packet */ + skb_reset_network_header(skb); + iph = ip_hdr(skb); + if (iph->protocol != IPPROTO_TCP) + return -1; + + ip_len = ip_hdrlen(skb); + skb_set_transport_header(skb, ip_len); + *tcph = tcp_hdr(skb); + + /* check if ip header and tcp header are complete */ + if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb)) + return -1; + + *hdr_flags = LRO_IPV4 | LRO_TCP; + *iphdr = iph; + + return 0; +} + +static int pasemi_mac_unmap_tx_skb(struct pasemi_mac *mac, + const int nfrags, + struct sk_buff *skb, + const dma_addr_t *dmas) +{ + int f; + struct pci_dev *pdev = mac->dma_pdev; + + pci_unmap_single(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(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 struct pasemi_mac_csring *pasemi_mac_setup_csring(struct pasemi_mac *mac) +{ + struct pasemi_mac_csring *ring; + u32 val; + unsigned int cfg; + int chno; + + ring = pasemi_dma_alloc_chan(TXCHAN, sizeof(struct pasemi_mac_csring), + offsetof(struct pasemi_mac_csring, chan)); + + if (!ring) { + dev_err(&mac->pdev->dev, "Can't allocate checksum channel\n"); + goto out_chan; + } + + chno = ring->chan.chno; + + ring->size = CS_RING_SIZE; + ring->next_to_fill = 0; + + /* Allocate descriptors */ + if (pasemi_dma_alloc_ring(&ring->chan, CS_RING_SIZE)) + goto out_ring_desc; + + write_dma_reg(PAS_DMA_TXCHAN_BASEL(chno), + PAS_DMA_TXCHAN_BASEL_BRBL(ring->chan.ring_dma)); + val = PAS_DMA_TXCHAN_BASEU_BRBH(ring->chan.ring_dma >> 32); + val |= PAS_DMA_TXCHAN_BASEU_SIZ(CS_RING_SIZE >> 3); + + write_dma_reg(PAS_DMA_TXCHAN_BASEU(chno), val); + + ring->events[0] = pasemi_dma_alloc_flag(); + ring->events[1] = pasemi_dma_alloc_flag(); + if (ring->events[0] < 0 || ring->events[1] < 0) + goto out_flags; + + pasemi_dma_clear_flag(ring->events[0]); + pasemi_dma_clear_flag(ring->events[1]); + + ring->fun = pasemi_dma_alloc_fun(); + if (ring->fun < 0) + goto out_fun; + + cfg = PAS_DMA_TXCHAN_CFG_TY_FUNC | PAS_DMA_TXCHAN_CFG_UP | + PAS_DMA_TXCHAN_CFG_TATTR(ring->fun) | + PAS_DMA_TXCHAN_CFG_LPSQ | PAS_DMA_TXCHAN_CFG_LPDQ; + + if (translation_enabled()) + cfg |= PAS_DMA_TXCHAN_CFG_TRD | PAS_DMA_TXCHAN_CFG_TRR; + + write_dma_reg(PAS_DMA_TXCHAN_CFG(chno), cfg); + + /* enable channel */ + pasemi_dma_start_chan(&ring->chan, PAS_DMA_TXCHAN_TCMDSTA_SZ | + PAS_DMA_TXCHAN_TCMDSTA_DB | + PAS_DMA_TXCHAN_TCMDSTA_DE | + PAS_DMA_TXCHAN_TCMDSTA_DA); + + return ring; + +out_fun: +out_flags: + if (ring->events[0] >= 0) + pasemi_dma_free_flag(ring->events[0]); + if (ring->events[1] >= 0) + pasemi_dma_free_flag(ring->events[1]); + pasemi_dma_free_ring(&ring->chan); +out_ring_desc: + pasemi_dma_free_chan(&ring->chan); +out_chan: + + return NULL; +} + +static void pasemi_mac_setup_csrings(struct pasemi_mac *mac) +{ + int i; + mac->cs[0] = pasemi_mac_setup_csring(mac); + if (mac->type == MAC_TYPE_XAUI) + mac->cs[1] = pasemi_mac_setup_csring(mac); + else + mac->cs[1] = 0; + + for (i = 0; i < MAX_CS; i++) + if (mac->cs[i]) + mac->num_cs++; +} + +static void pasemi_mac_free_csring(struct pasemi_mac_csring *csring) +{ + pasemi_dma_stop_chan(&csring->chan); + pasemi_dma_free_flag(csring->events[0]); + pasemi_dma_free_flag(csring->events[1]); + pasemi_dma_free_ring(&csring->chan); + pasemi_dma_free_chan(&csring->chan); + pasemi_dma_free_fun(csring->fun); +} + +static int pasemi_mac_setup_rx_resources(const struct net_device *dev) +{ + struct pasemi_mac_rxring *ring; + struct pasemi_mac *mac = netdev_priv(dev); + int chno; + unsigned int cfg; + + ring = pasemi_dma_alloc_chan(RXCHAN, sizeof(struct pasemi_mac_rxring), + offsetof(struct pasemi_mac_rxring, chan)); + + if (!ring) { + dev_err(&mac->pdev->dev, "Can't allocate RX channel\n"); + goto out_chan; + } + chno = ring->chan.chno; + + 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 */ + if (pasemi_dma_alloc_ring(&ring->chan, RX_RING_SIZE)) + goto out_ring_desc; + + ring->buffers = dma_alloc_coherent(&mac->dma_pdev->dev, + RX_RING_SIZE * sizeof(u64), + &ring->buf_dma, GFP_KERNEL); + if (!ring->buffers) + goto out_ring_desc; + + memset(ring->buffers, 0, RX_RING_SIZE * sizeof(u64)); + + write_dma_reg(PAS_DMA_RXCHAN_BASEL(chno), + PAS_DMA_RXCHAN_BASEL_BRBL(ring->chan.ring_dma)); + + write_dma_reg(PAS_DMA_RXCHAN_BASEU(chno), + PAS_DMA_RXCHAN_BASEU_BRBH(ring->chan.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(PAS_DMA_RXCHAN_CFG(chno), cfg); + + write_dma_reg(PAS_DMA_RXINT_BASEL(mac->dma_if), + PAS_DMA_RXINT_BASEL_BRBL(ring->buf_dma)); + + write_dma_reg(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(2) | 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(PAS_DMA_RXINT_CFG(mac->dma_if), cfg); + + ring->next_to_fill = 0; + ring->next_to_clean = 0; + ring->mac = mac; + mac->rx = ring; + + return 0; + +out_ring_desc: + kfree(ring->ring_info); +out_ring_info: + pasemi_dma_free_chan(&ring->chan); +out_chan: + return -ENOMEM; +} + +static struct pasemi_mac_txring * +pasemi_mac_setup_tx_resources(const struct net_device *dev) +{ + struct pasemi_mac *mac = netdev_priv(dev); + u32 val; + struct pasemi_mac_txring *ring; + unsigned int cfg; + int chno; + + ring = pasemi_dma_alloc_chan(TXCHAN, sizeof(struct pasemi_mac_txring), + offsetof(struct pasemi_mac_txring, chan)); + + if (!ring) { + dev_err(&mac->pdev->dev, "Can't allocate TX channel\n"); + goto out_chan; + } + + chno = ring->chan.chno; + + 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 */ + if (pasemi_dma_alloc_ring(&ring->chan, TX_RING_SIZE)) + goto out_ring_desc; + + write_dma_reg(PAS_DMA_TXCHAN_BASEL(chno), + PAS_DMA_TXCHAN_BASEL_BRBL(ring->chan.ring_dma)); + val = PAS_DMA_TXCHAN_BASEU_BRBH(ring->chan.ring_dma >> 32); + val |= PAS_DMA_TXCHAN_BASEU_SIZ(TX_RING_SIZE >> 3); + + write_dma_reg(PAS_DMA_TXCHAN_BASEU(chno), 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(4); + + if (translation_enabled()) + cfg |= PAS_DMA_TXCHAN_CFG_TRD | PAS_DMA_TXCHAN_CFG_TRR; + + write_dma_reg(PAS_DMA_TXCHAN_CFG(chno), cfg); + + ring->next_to_fill = 0; + ring->next_to_clean = 0; + ring->mac = mac; + + return ring; + +out_ring_desc: + kfree(ring->ring_info); +out_ring_info: + pasemi_dma_free_chan(&ring->chan); +out_chan: + return NULL; +} + +static void pasemi_mac_free_tx_resources(struct pasemi_mac *mac) +{ + struct pasemi_mac_txring *txring = tx_ring(mac); + unsigned int i, j; + struct pasemi_mac_buffer *info; + dma_addr_t dmas[MAX_SKB_FRAGS+1]; + int freed, nfrags; + int start, limit; + + start = txring->next_to_clean; + limit = txring->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 = &txring->ring_info[(i+1) & (TX_RING_SIZE-1)]; + if (info->dma && info->skb) { + nfrags = skb_shinfo(info->skb)->nr_frags; + for (j = 0; j <= nfrags; j++) + dmas[j] = txring->ring_info[(i+1+j) & + (TX_RING_SIZE-1)].dma; + freed = pasemi_mac_unmap_tx_skb(mac, nfrags, + info->skb, dmas); + } else + freed = 2; + } + + kfree(txring->ring_info); + pasemi_dma_free_chan(&txring->chan); + +} + +static void pasemi_mac_free_rx_buffers(struct pasemi_mac *mac) +{ + struct pasemi_mac_rxring *rx = rx_ring(mac); + unsigned int i; + struct pasemi_mac_buffer *info; + + for (i = 0; i < RX_RING_SIZE; i++) { + info = &RX_DESC_INFO(rx, 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_BUFF(rx, i) = 0; +} + +static void pasemi_mac_free_rx_resources(struct pasemi_mac *mac) +{ + pasemi_mac_free_rx_buffers(mac); + + dma_free_coherent(&mac->dma_pdev->dev, RX_RING_SIZE * sizeof(u64), + rx_ring(mac)->buffers, rx_ring(mac)->buf_dma); + + kfree(rx_ring(mac)->ring_info); + pasemi_dma_free_chan(&rx_ring(mac)->chan); + mac->rx = NULL; +} + +static void pasemi_mac_replenish_rx_ring(const struct net_device *dev, + const int limit) +{ + const struct pasemi_mac *mac = netdev_priv(dev); + struct pasemi_mac_rxring *rx = rx_ring(mac); + int fill, count; + + if (limit <= 0) + return; + + fill = rx_ring(mac)->next_to_fill; + for (count = 0; count < limit; count++) { + struct pasemi_mac_buffer *info = &RX_DESC_INFO(rx, fill); + u64 *buff = &RX_BUFF(rx, fill); + struct sk_buff *skb; + dma_addr_t dma; + + /* Entry in use? */ + WARN_ON(*buff); + + skb = dev_alloc_skb(mac->bufsz); + skb_reserve(skb, LOCAL_SKB_ALIGN); + + if (unlikely(!skb)) + break; + + dma = pci_map_single(mac->dma_pdev, skb->data, + mac->bufsz - LOCAL_SKB_ALIGN, + PCI_DMA_FROMDEVICE); + + if (unlikely(pci_dma_mapping_error(mac->dma_pdev, dma))) { + dev_kfree_skb_irq(info->skb); + break; + } + + info->skb = skb; + info->dma = dma; + *buff = XCT_RXB_LEN(mac->bufsz) | XCT_RXB_ADDR(dma); + fill++; + } + + wmb(); + + write_dma_reg(PAS_DMA_RXINT_INCR(mac->dma_if), count); + + rx_ring(mac)->next_to_fill = (rx_ring(mac)->next_to_fill + count) & + (RX_RING_SIZE - 1); +} + +static void pasemi_mac_restart_rx_intr(const struct pasemi_mac *mac) +{ + struct pasemi_mac_rxring *rx = rx_ring(mac); + unsigned int reg, pcnt; + /* Re-enable packet count interrupts: finally + * ack the packet count interrupt we got in rx_intr. + */ + + pcnt = *rx->chan.status & PAS_STATUS_PCNT_M; + + reg = PAS_IOB_DMA_RXCH_RESET_PCNT(pcnt) | PAS_IOB_DMA_RXCH_RESET_PINTC; + + if (*rx->chan.status & PAS_STATUS_TIMER) + reg |= PAS_IOB_DMA_RXCH_RESET_TINTC; + + write_iob_reg(PAS_IOB_DMA_RXCH_RESET(mac->rx->chan.chno), reg); +} + +static void pasemi_mac_restart_tx_intr(const struct pasemi_mac *mac) +{ + unsigned int reg, pcnt; + + /* Re-enable packet count interrupts */ + pcnt = *tx_ring(mac)->chan.status & PAS_STATUS_PCNT_M; + + reg = PAS_IOB_DMA_TXCH_RESET_PCNT(pcnt) | PAS_IOB_DMA_TXCH_RESET_PINTC; + + write_iob_reg(PAS_IOB_DMA_TXCH_RESET(tx_ring(mac)->chan.chno), reg); +} + + +static inline void pasemi_mac_rx_error(const struct pasemi_mac *mac, + const u64 macrx) +{ + unsigned int rcmdsta, ccmdsta; + struct pasemi_dmachan *chan = &rx_ring(mac)->chan; + + if (!netif_msg_rx_err(mac)) + return; + + rcmdsta = read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if)); + ccmdsta = read_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(chan->chno)); + + printk(KERN_ERR "pasemi_mac: rx error. macrx %016llx, rx status %llx\n", + macrx, *chan->status); + + printk(KERN_ERR "pasemi_mac: rcmdsta %08x ccmdsta %08x\n", + rcmdsta, ccmdsta); +} + +static inline void pasemi_mac_tx_error(const struct pasemi_mac *mac, + const u64 mactx) +{ + unsigned int cmdsta; + struct pasemi_dmachan *chan = &tx_ring(mac)->chan; + + if (!netif_msg_tx_err(mac)) + return; + + cmdsta = read_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(chan->chno)); + + printk(KERN_ERR "pasemi_mac: tx error. mactx 0x%016llx, "\ + "tx status 0x%016llx\n", mactx, *chan->status); + + printk(KERN_ERR "pasemi_mac: tcmdsta 0x%08x\n", cmdsta); +} + +static int pasemi_mac_clean_rx(struct pasemi_mac_rxring *rx, + const int limit) +{ + const struct pasemi_dmachan *chan = &rx->chan; + struct pasemi_mac *mac = rx->mac; + struct pci_dev *pdev = mac->dma_pdev; + unsigned int n; + int count, buf_index, tot_bytes, packets; + struct pasemi_mac_buffer *info; + struct sk_buff *skb; + unsigned int len; + u64 macrx, eval; + dma_addr_t dma; + + tot_bytes = 0; + packets = 0; + + spin_lock(&rx->lock); + + n = rx->next_to_clean; + + prefetch(&RX_DESC(rx, n)); + + for (count = 0; count < limit; count++) { + macrx = RX_DESC(rx, n); + prefetch(&RX_DESC(rx, n+4)); + + if ((macrx & XCT_MACRX_E) || + (*chan->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_DESC(rx, n+1) & XCT_RXRES_8B_EVAL_M) >> + XCT_RXRES_8B_EVAL_S; + buf_index = eval-1; + + dma = (RX_DESC(rx, n+2) & XCT_PTR_ADDR_M); + info = &RX_DESC_INFO(rx, buf_index); + + skb = info->skb; + + prefetch_skb(skb); + + len = (macrx & XCT_MACRX_LLEN_M) >> XCT_MACRX_LLEN_S; + + pci_unmap_single(pdev, dma, mac->bufsz - LOCAL_SKB_ALIGN, + PCI_DMA_FROMDEVICE); + + if (macrx & XCT_MACRX_CRC) { + /* CRC error flagged */ + mac->netdev->stats.rx_errors++; + mac->netdev->stats.rx_crc_errors++; + /* No need to free skb, it'll be reused */ + goto next; + } + + info->skb = NULL; + info->dma = 0; + + 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_checksum_none_assert(skb); + + packets++; + tot_bytes += len; + + /* Don't include CRC */ + skb_put(skb, len-4); + + skb->protocol = eth_type_trans(skb, mac->netdev); + lro_receive_skb(&mac->lro_mgr, skb, (void *)macrx); + +next: + RX_DESC(rx, n) = 0; + RX_DESC(rx, 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(rx, buf_index) = 0; + + n += 4; + } + + if (n > RX_RING_SIZE) { + /* Errata 5971 workaround: L2 target of headers */ + write_iob_reg(PAS_IOB_COM_PKTHDRCNT, 0); + n &= (RX_RING_SIZE-1); + } + + rx_ring(mac)->next_to_clean = n; + + lro_flush_all(&mac->lro_mgr); + + /* 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(PAS_DMA_RXCHAN_INCR(mac->rx->chan.chno), count << 1); + + pasemi_mac_replenish_rx_ring(mac->netdev, count); + + mac->netdev->stats.rx_bytes += tot_bytes; + mac->netdev->stats.rx_packets += packets; + + spin_unlock(&rx_ring(mac)->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_txring *txring) +{ + struct pasemi_dmachan *chan = &txring->chan; + struct pasemi_mac *mac = txring->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]; + int nf[TX_CLEAN_BATCHSIZE]; + int nr_frags; + + total_count = 0; + batch_limit = TX_CLEAN_BATCHSIZE; +restart: + spin_lock_irqsave(&txring->lock, flags); + + start = txring->next_to_clean; + ring_limit = txring->next_to_fill; + + prefetch(&TX_DESC_INFO(txring, start+1).skb); + + /* 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_DESC(txring, i); + struct sk_buff *skb; + + if ((mactx & XCT_MACTX_E) || + (*chan->status & PAS_STATUS_ERROR)) + pasemi_mac_tx_error(mac, mactx); + + /* Skip over control descriptors */ + if (!(mactx & XCT_MACTX_LLEN_M)) { + TX_DESC(txring, i) = 0; + TX_DESC(txring, i+1) = 0; + buf_count = 2; + continue; + } + + skb = TX_DESC_INFO(txring, i+1).skb; + nr_frags = TX_DESC_INFO(txring, i).dma; + + if (unlikely(mactx & XCT_MACTX_O)) + /* Not yet transmitted */ + break; + + buf_count = 2 + nr_frags; + /* 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++; + + for (j = 0; j <= nr_frags; j++) + dmas[descr_count][j] = TX_DESC_INFO(txring, i+1+j).dma; + + skbs[descr_count] = skb; + nf[descr_count] = nr_frags; + + TX_DESC(txring, i) = 0; + TX_DESC(txring, i+1) = 0; + + descr_count++; + } + txring->next_to_clean = i & (TX_RING_SIZE-1); + + spin_unlock_irqrestore(&txring->lock, flags); + netif_wake_queue(mac->netdev); + + for (i = 0; i < descr_count; i++) + pasemi_mac_unmap_tx_skb(mac, nf[i], 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) +{ + const struct pasemi_mac_rxring *rxring = data; + struct pasemi_mac *mac = rxring->mac; + const struct pasemi_dmachan *chan = &rxring->chan; + unsigned int reg; + + if (!(*chan->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 (*chan->status & PAS_STATUS_SOFT) + reg |= PAS_IOB_DMA_RXCH_RESET_SINTC; + if (*chan->status & PAS_STATUS_ERROR) + reg |= PAS_IOB_DMA_RXCH_RESET_DINTC; + + napi_schedule(&mac->napi); + + write_iob_reg(PAS_IOB_DMA_RXCH_RESET(chan->chno), reg); + + return IRQ_HANDLED; +} + +#define TX_CLEAN_INTERVAL HZ + +static void pasemi_mac_tx_timer(unsigned long data) +{ + struct pasemi_mac_txring *txring = (struct pasemi_mac_txring *)data; + struct pasemi_mac *mac = txring->mac; + + pasemi_mac_clean_tx(txring); + + mod_timer(&txring->clean_timer, jiffies + TX_CLEAN_INTERVAL); + + pasemi_mac_restart_tx_intr(mac); +} + +static irqreturn_t pasemi_mac_tx_intr(int irq, void *data) +{ + struct pasemi_mac_txring *txring = data; + const struct pasemi_dmachan *chan = &txring->chan; + struct pasemi_mac *mac = txring->mac; + unsigned int reg; + + if (!(*chan->status & PAS_STATUS_CAUSE_M)) + return IRQ_NONE; + + reg = 0; + + if (*chan->status & PAS_STATUS_SOFT) + reg |= PAS_IOB_DMA_TXCH_RESET_SINTC; + if (*chan->status & PAS_STATUS_ERROR) + reg |= PAS_IOB_DMA_TXCH_RESET_DINTC; + + mod_timer(&txring->clean_timer, jiffies + (TX_CLEAN_INTERVAL)*2); + + napi_schedule(&mac->napi); + + if (reg) + write_iob_reg(PAS_IOB_DMA_TXCH_RESET(chan->chno), 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); + pasemi_mac_intf_disable(mac); + mac->link = 0; + + return; + } else { + pasemi_mac_intf_enable(mac); + 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; + + dn = pci_device_to_OF_node(mac->pdev); + phy_dn = of_parse_phandle(dn, "phy-handle", 0); + of_node_put(phy_dn); + + mac->link = 0; + mac->speed = 0; + mac->duplex = -1; + + phydev = of_phy_connect(dev, phy_dn, &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; +} + + +static int pasemi_mac_open(struct net_device *dev) +{ + struct pasemi_mac *mac = netdev_priv(dev); + unsigned int flags; + int i, ret; + + 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); + + ret = pasemi_mac_setup_rx_resources(dev); + if (ret) + goto out_rx_resources; + + mac->tx = pasemi_mac_setup_tx_resources(dev); + + if (!mac->tx) + goto out_tx_ring; + + /* We might already have allocated rings in case mtu was changed + * before interface was brought up. + */ + if (dev->mtu > 1500 && !mac->num_cs) { + pasemi_mac_setup_csrings(mac); + if (!mac->num_cs) + goto out_tx_ring; + } + + /* Zero out rmon counters */ + for (i = 0; i < 32; i++) + write_mac_reg(mac, PAS_MAC_RMON(i), 0); + + /* 0x3ff with 33MHz clock is about 31us */ + write_iob_reg(PAS_IOB_DMA_COM_TIMEOUTCFG, + PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(0x3ff)); + + write_iob_reg(PAS_IOB_DMA_RXCH_CFG(mac->rx->chan.chno), + PAS_IOB_DMA_RXCH_CFG_CNTTH(256)); + + write_iob_reg(PAS_IOB_DMA_TXCH_CFG(mac->tx->chan.chno), + PAS_IOB_DMA_TXCH_CFG_CNTTH(32)); + + write_mac_reg(mac, PAS_MAC_IPC_CHNL, + PAS_MAC_IPC_CHNL_DCHNO(mac->rx->chan.chno) | + PAS_MAC_IPC_CHNL_BCH(mac->rx->chan.chno)); + + /* enable rx if */ + write_dma_reg(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 */ + pasemi_dma_start_chan(&rx_ring(mac)->chan, PAS_DMA_RXCHAN_CCMDSTA_DU | + PAS_DMA_RXCHAN_CCMDSTA_OD | + PAS_DMA_RXCHAN_CCMDSTA_FD | + PAS_DMA_RXCHAN_CCMDSTA_DT); + + /* enable tx channel */ + pasemi_dma_start_chan(&tx_ring(mac)->chan, 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(PAS_DMA_RXCHAN_INCR(rx_ring(mac)->chan.chno), + RX_RING_SIZE>>1); + + /* Clear out any residual packet count state from firmware */ + pasemi_mac_restart_rx_intr(mac); + pasemi_mac_restart_tx_intr(mac); + + flags = PAS_MAC_CFG_PCFG_S1 | 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); + if (ret) { + /* Since we won't get link notification, just enable RX */ + pasemi_mac_intf_enable(mac); + if (mac->type == MAC_TYPE_GMAC) { + /* Warn for missing PHY on SGMII (1Gig) ports */ + dev_warn(&mac->pdev->dev, + "PHY init failed: %d.\n", ret); + dev_warn(&mac->pdev->dev, + "Defaulting to 1Gbit full duplex\n"); + } + } + + netif_start_queue(dev); + napi_enable(&mac->napi); + + snprintf(mac->tx_irq_name, sizeof(mac->tx_irq_name), "%s tx", + dev->name); + + ret = request_irq(mac->tx->chan.irq, pasemi_mac_tx_intr, IRQF_DISABLED, + mac->tx_irq_name, mac->tx); + if (ret) { + dev_err(&mac->pdev->dev, "request_irq of irq %d failed: %d\n", + mac->tx->chan.irq, ret); + goto out_tx_int; + } + + snprintf(mac->rx_irq_name, sizeof(mac->rx_irq_name), "%s rx", + dev->name); + + ret = request_irq(mac->rx->chan.irq, pasemi_mac_rx_intr, IRQF_DISABLED, + mac->rx_irq_name, mac->rx); + if (ret) { + dev_err(&mac->pdev->dev, "request_irq of irq %d failed: %d\n", + mac->rx->chan.irq, ret); + goto out_rx_int; + } + + if (mac->phydev) + phy_start(mac->phydev); + + init_timer(&mac->tx->clean_timer); + mac->tx->clean_timer.function = pasemi_mac_tx_timer; + mac->tx->clean_timer.data = (unsigned long)mac->tx; + mac->tx->clean_timer.expires = jiffies+HZ; + add_timer(&mac->tx->clean_timer); + + return 0; + +out_rx_int: + free_irq(mac->tx->chan.irq, mac->tx); +out_tx_int: + napi_disable(&mac->napi); + netif_stop_queue(dev); +out_tx_ring: + if (mac->tx) + pasemi_mac_free_tx_resources(mac); + pasemi_mac_free_rx_resources(mac); +out_rx_resources: + + return ret; +} + +#define MAX_RETRIES 5000 + +static void pasemi_mac_pause_txchan(struct pasemi_mac *mac) +{ + unsigned int sta, retries; + int txch = tx_ring(mac)->chan.chno; + + write_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(txch), + PAS_DMA_TXCHAN_TCMDSTA_ST); + + for (retries = 0; retries < MAX_RETRIES; retries++) { + sta = read_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(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, tcmdsta %08x\n", sta); + + write_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(txch), 0); +} + +static void pasemi_mac_pause_rxchan(struct pasemi_mac *mac) +{ + unsigned int sta, retries; + int rxch = rx_ring(mac)->chan.chno; + + write_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(rxch), + PAS_DMA_RXCHAN_CCMDSTA_ST); + for (retries = 0; retries < MAX_RETRIES; retries++) { + sta = read_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(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, ccmdsta 08%x\n", sta); + write_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(rxch), 0); +} + +static void pasemi_mac_pause_rxint(struct pasemi_mac *mac) +{ + unsigned int sta, retries; + + write_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if), + PAS_DMA_RXINT_RCMDSTA_ST); + for (retries = 0; retries < MAX_RETRIES; retries++) { + sta = read_dma_reg(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, rcmdsta %08x\n", sta); + write_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if), 0); +} + +static int pasemi_mac_close(struct net_device *dev) +{ + struct pasemi_mac *mac = netdev_priv(dev); + unsigned int sta; + int rxch, txch, i; + + rxch = rx_ring(mac)->chan.chno; + txch = tx_ring(mac)->chan.chno; + + if (mac->phydev) { + phy_stop(mac->phydev); + phy_disconnect(mac->phydev); + } + + del_timer_sync(&mac->tx->clean_timer); + + netif_stop_queue(dev); + napi_disable(&mac->napi); + + sta = read_dma_reg(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(PAS_DMA_RXCHAN_CCMDSTA(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(PAS_DMA_TXCHAN_TCMDSTA(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(tx_ring(mac)); + pasemi_mac_clean_rx(rx_ring(mac), RX_RING_SIZE); + + pasemi_mac_pause_txchan(mac); + pasemi_mac_pause_rxint(mac); + pasemi_mac_pause_rxchan(mac); + pasemi_mac_intf_disable(mac); + + free_irq(mac->tx->chan.irq, mac->tx); + free_irq(mac->rx->chan.irq, mac->rx); + + for (i = 0; i < mac->num_cs; i++) { + pasemi_mac_free_csring(mac->cs[i]); + mac->cs[i] = NULL; + } + + mac->num_cs = 0; + + /* Free resources */ + pasemi_mac_free_rx_resources(mac); + pasemi_mac_free_tx_resources(mac); + + return 0; +} + +static void pasemi_mac_queue_csdesc(const struct sk_buff *skb, + const dma_addr_t *map, + const unsigned int *map_size, + struct pasemi_mac_txring *txring, + struct pasemi_mac_csring *csring) +{ + u64 fund; + dma_addr_t cs_dest; + const int nh_off = skb_network_offset(skb); + const int nh_len = skb_network_header_len(skb); + const int nfrags = skb_shinfo(skb)->nr_frags; + int cs_size, i, fill, hdr, cpyhdr, evt; + dma_addr_t csdma; + + fund = XCT_FUN_ST | XCT_FUN_RR_8BRES | + XCT_FUN_O | XCT_FUN_FUN(csring->fun) | + XCT_FUN_CRM_SIG | XCT_FUN_LLEN(skb->len - nh_off) | + XCT_FUN_SHL(nh_len >> 2) | XCT_FUN_SE; + + switch (ip_hdr(skb)->protocol) { + case IPPROTO_TCP: + fund |= XCT_FUN_SIG_TCP4; + /* TCP checksum is 16 bytes into the header */ + cs_dest = map[0] + skb_transport_offset(skb) + 16; + break; + case IPPROTO_UDP: + fund |= XCT_FUN_SIG_UDP4; + /* UDP checksum is 6 bytes into the header */ + cs_dest = map[0] + skb_transport_offset(skb) + 6; + break; + default: + BUG(); + } + + /* Do the checksum offloaded */ + fill = csring->next_to_fill; + hdr = fill; + + CS_DESC(csring, fill++) = fund; + /* Room for 8BRES. Checksum result is really 2 bytes into it */ + csdma = csring->chan.ring_dma + (fill & (CS_RING_SIZE-1)) * 8 + 2; + CS_DESC(csring, fill++) = 0; + + CS_DESC(csring, fill) = XCT_PTR_LEN(map_size[0]-nh_off) | XCT_PTR_ADDR(map[0]+nh_off); + for (i = 1; i <= nfrags; i++) + CS_DESC(csring, fill+i) = XCT_PTR_LEN(map_size[i]) | XCT_PTR_ADDR(map[i]); + + fill += i; + if (fill & 1) + fill++; + + /* Copy the result into the TCP packet */ + cpyhdr = fill; + CS_DESC(csring, fill++) = XCT_FUN_O | XCT_FUN_FUN(csring->fun) | + XCT_FUN_LLEN(2) | XCT_FUN_SE; + CS_DESC(csring, fill++) = XCT_PTR_LEN(2) | XCT_PTR_ADDR(cs_dest) | XCT_PTR_T; + CS_DESC(csring, fill++) = XCT_PTR_LEN(2) | XCT_PTR_ADDR(csdma); + fill++; + + evt = !csring->last_event; + csring->last_event = evt; + + /* Event handshaking with MAC TX */ + CS_DESC(csring, fill++) = CTRL_CMD_T | CTRL_CMD_META_EVT | CTRL_CMD_O | + CTRL_CMD_ETYPE_SET | CTRL_CMD_REG(csring->events[evt]); + CS_DESC(csring, fill++) = 0; + CS_DESC(csring, fill++) = CTRL_CMD_T | CTRL_CMD_META_EVT | CTRL_CMD_O | + CTRL_CMD_ETYPE_WCLR | CTRL_CMD_REG(csring->events[!evt]); + CS_DESC(csring, fill++) = 0; + csring->next_to_fill = fill & (CS_RING_SIZE-1); + + cs_size = fill - hdr; + write_dma_reg(PAS_DMA_TXCHAN_INCR(csring->chan.chno), (cs_size) >> 1); + + /* TX-side event handshaking */ + fill = txring->next_to_fill; + TX_DESC(txring, fill++) = CTRL_CMD_T | CTRL_CMD_META_EVT | CTRL_CMD_O | + CTRL_CMD_ETYPE_WSET | CTRL_CMD_REG(csring->events[evt]); + TX_DESC(txring, fill++) = 0; + TX_DESC(txring, fill++) = CTRL_CMD_T | CTRL_CMD_META_EVT | CTRL_CMD_O | + CTRL_CMD_ETYPE_CLR | CTRL_CMD_REG(csring->events[!evt]); + TX_DESC(txring, fill++) = 0; + txring->next_to_fill = fill; + + write_dma_reg(PAS_DMA_TXCHAN_INCR(txring->chan.chno), 2); +} + +static int pasemi_mac_start_tx(struct sk_buff *skb, struct net_device *dev) +{ + struct pasemi_mac * const mac = netdev_priv(dev); + struct pasemi_mac_txring * const txring = tx_ring(mac); + struct pasemi_mac_csring *csring; + u64 dflags = 0; + u64 mactx; + dma_addr_t map[MAX_SKB_FRAGS+1]; + unsigned int map_size[MAX_SKB_FRAGS+1]; + unsigned long flags; + int i, nfrags; + int fill; + const int nh_off = skb_network_offset(skb); + const int nh_len = skb_network_header_len(skb); + + prefetch(&txring->ring_info); + + dflags = XCT_MACTX_O | XCT_MACTX_ST | XCT_MACTX_CRC_PAD; + + 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 (pci_dma_mapping_error(mac->dma_pdev, 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 (pci_dma_mapping_error(mac->dma_pdev, map[i+1])) { + nfrags = i; + goto out_err_nolock; + } + } + + if (skb->ip_summed == CHECKSUM_PARTIAL && skb->len <= 1540) { + switch (ip_hdr(skb)->protocol) { + case IPPROTO_TCP: + dflags |= XCT_MACTX_CSUM_TCP; + dflags |= XCT_MACTX_IPH(nh_len >> 2); + dflags |= XCT_MACTX_IPO(nh_off); + break; + case IPPROTO_UDP: + dflags |= XCT_MACTX_CSUM_UDP; + dflags |= XCT_MACTX_IPH(nh_len >> 2); + dflags |= XCT_MACTX_IPO(nh_off); + break; + default: + WARN_ON(1); + } + } + + mactx = dflags | XCT_MACTX_LLEN(skb->len); + + 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 + 14) { + /* no room -- stop the queue and wait for tx intr */ + netif_stop_queue(dev); + goto out_err; + } + + /* Queue up checksum + event descriptors, if needed */ + if (mac->num_cs && skb->ip_summed == CHECKSUM_PARTIAL && skb->len > 1540) { + csring = mac->cs[mac->last_cs]; + mac->last_cs = (mac->last_cs + 1) % mac->num_cs; + + pasemi_mac_queue_csdesc(skb, map, map_size, txring, csring); + } + + fill = txring->next_to_fill; + TX_DESC(txring, fill) = mactx; + TX_DESC_INFO(txring, fill).dma = nfrags; + fill++; + TX_DESC_INFO(txring, fill).skb = skb; + for (i = 0; i <= nfrags; i++) { + TX_DESC(txring, fill+i) = + XCT_PTR_LEN(map_size[i]) | XCT_PTR_ADDR(map[i]); + TX_DESC_INFO(txring, 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 = (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(PAS_DMA_TXCHAN_INCR(txring->chan.chno), (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) +{ + const 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); + int pkts; + + pasemi_mac_clean_tx(tx_ring(mac)); + pkts = pasemi_mac_clean_rx(rx_ring(mac), budget); + if (pkts < budget) { + /* all done, no more packets present */ + napi_complete(napi); + + pasemi_mac_restart_rx_intr(mac); + pasemi_mac_restart_tx_intr(mac); + } + return pkts; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +/* + * Polling 'interrupt' - used by things like netconsole to send skbs + * without having to re-enable interrupts. It's not called while + * the interrupt routine is executing. + */ +static void pasemi_mac_netpoll(struct net_device *dev) +{ + const struct pasemi_mac *mac = netdev_priv(dev); + + disable_irq(mac->tx->chan.irq); + pasemi_mac_tx_intr(mac->tx->chan.irq, mac->tx); + enable_irq(mac->tx->chan.irq); + + disable_irq(mac->rx->chan.irq); + pasemi_mac_rx_intr(mac->rx->chan.irq, mac->rx); + enable_irq(mac->rx->chan.irq); +} +#endif + +static int pasemi_mac_change_mtu(struct net_device *dev, int new_mtu) +{ + struct pasemi_mac *mac = netdev_priv(dev); + unsigned int reg; + unsigned int rcmdsta = 0; + int running; + int ret = 0; + + if (new_mtu < PE_MIN_MTU || new_mtu > PE_MAX_MTU) + return -EINVAL; + + running = netif_running(dev); + + if (running) { + /* Need to stop the interface, clean out all already + * received buffers, free all unused buffers on the RX + * interface ring, then finally re-fill the rx ring with + * the new-size buffers and restart. + */ + + napi_disable(&mac->napi); + netif_tx_disable(dev); + pasemi_mac_intf_disable(mac); + + rcmdsta = read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if)); + pasemi_mac_pause_rxint(mac); + pasemi_mac_clean_rx(rx_ring(mac), RX_RING_SIZE); + pasemi_mac_free_rx_buffers(mac); + + } + + /* Setup checksum channels if large MTU and none already allocated */ + if (new_mtu > 1500 && !mac->num_cs) { + pasemi_mac_setup_csrings(mac); + if (!mac->num_cs) { + ret = -ENOMEM; + goto out; + } + } + + /* Change maxf, i.e. what size frames are accepted. + * Need room for ethernet header and CRC word + */ + reg = read_mac_reg(mac, PAS_MAC_CFG_MACCFG); + reg &= ~PAS_MAC_CFG_MACCFG_MAXF_M; + reg |= PAS_MAC_CFG_MACCFG_MAXF(new_mtu + ETH_HLEN + 4); + write_mac_reg(mac, PAS_MAC_CFG_MACCFG, reg); + + dev->mtu = new_mtu; + /* MTU + ETH_HLEN + VLAN_HLEN + 2 64B cachelines */ + mac->bufsz = new_mtu + ETH_HLEN + ETH_FCS_LEN + LOCAL_SKB_ALIGN + 128; + +out: + if (running) { + write_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if), + rcmdsta | PAS_DMA_RXINT_RCMDSTA_EN); + + rx_ring(mac)->next_to_fill = 0; + pasemi_mac_replenish_rx_ring(dev, RX_RING_SIZE-1); + + napi_enable(&mac->napi); + netif_start_queue(dev); + pasemi_mac_intf_enable(mac); + } + + return ret; +} + +static const struct net_device_ops pasemi_netdev_ops = { + .ndo_open = pasemi_mac_open, + .ndo_stop = pasemi_mac_close, + .ndo_start_xmit = pasemi_mac_start_tx, + .ndo_set_multicast_list = pasemi_mac_set_rx_mode, + .ndo_set_mac_address = pasemi_mac_set_mac_addr, + .ndo_change_mtu = pasemi_mac_change_mtu, + .ndo_validate_addr = eth_validate_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = pasemi_mac_netpoll, +#endif +}; + +static int __devinit +pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct net_device *dev; + struct pasemi_mac *mac; + int err, ret; + + 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_IP_CSUM | NETIF_F_LLTX | NETIF_F_SG | + NETIF_F_HIGHDMA | NETIF_F_GSO; + + mac->lro_mgr.max_aggr = LRO_MAX_AGGR; + mac->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS; + mac->lro_mgr.lro_arr = mac->lro_desc; + mac->lro_mgr.get_skb_header = get_skb_hdr; + mac->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID; + mac->lro_mgr.dev = mac->netdev; + mac->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; + mac->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; + + + 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"); + err = -ENODEV; + goto out; + } + + 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"); + 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)); + + ret = mac_to_intf(mac); + if (ret < 0) { + dev_err(&mac->pdev->dev, "Can't map DMA interface\n"); + err = -ENODEV; + goto out; + } + mac->dma_if = ret; + + switch (pdev->device) { + case 0xa005: + mac->type = MAC_TYPE_GMAC; + break; + case 0xa006: + mac->type = MAC_TYPE_XAUI; + break; + default: + err = -ENODEV; + goto out; + } + + dev->netdev_ops = &pasemi_netdev_ops; + dev->mtu = PE_DEF_MTU; + /* 1500 MTU + ETH_HLEN + VLAN_HLEN + 2 64B cachelines */ + mac->bufsz = dev->mtu + ETH_HLEN + ETH_FCS_LEN + LOCAL_SKB_ALIGN + 128; + + dev->ethtool_ops = &pasemi_mac_ethtool_ops; + + if (err) + goto out; + + 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, hw addr %pM\n", + dev->name, mac->type == MAC_TYPE_GMAC ? "GMAC" : "XAUI", + mac->dma_if, 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); + + 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); + + pasemi_dma_free_chan(&mac->tx->chan); + pasemi_dma_free_chan(&mac->rx->chan); + + pci_set_drvdata(pdev, NULL); + free_netdev(netdev); +} + +static DEFINE_PCI_DEVICE_TABLE(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); +} + +int pasemi_mac_init_module(void) +{ + int err; + + err = pasemi_dma_init(); + if (err) + return err; + + return pci_register_driver(&pasemi_mac_driver); +} + +module_init(pasemi_mac_init_module); +module_exit(pasemi_mac_cleanup_module); diff --git a/drivers/net/ethernet/pasemi/pasemi_mac.h b/drivers/net/ethernet/pasemi/pasemi_mac.h new file mode 100644 index 0000000..e2f4efa --- /dev/null +++ b/drivers/net/ethernet/pasemi/pasemi_mac.h @@ -0,0 +1,216 @@ +/* + * Copyright (C) 2006 PA Semi, Inc + * + * Driver for the PA6T-1682M onchip 1G/10G Ethernet MACs, soft state and + * hardware register layouts. + * + * 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 + */ + +#ifndef PASEMI_MAC_H +#define PASEMI_MAC_H + +#include +#include +#include +#include + +/* Must be a power of two */ +#define RX_RING_SIZE 2048 +#define TX_RING_SIZE 4096 +#define CS_RING_SIZE (TX_RING_SIZE*2) + + +#define MAX_LRO_DESCRIPTORS 8 +#define MAX_CS 2 + +struct pasemi_mac_txring { + struct pasemi_dmachan chan; /* Must be first */ + spinlock_t lock; + unsigned int size; + unsigned int next_to_fill; + unsigned int next_to_clean; + struct pasemi_mac_buffer *ring_info; + struct pasemi_mac *mac; /* Needed in intr handler */ + struct timer_list clean_timer; +}; + +struct pasemi_mac_rxring { + struct pasemi_dmachan chan; /* Must be first */ + spinlock_t lock; + u64 *buffers; /* RX interface buffer ring */ + dma_addr_t buf_dma; + unsigned int size; + unsigned int next_to_fill; + unsigned int next_to_clean; + struct pasemi_mac_buffer *ring_info; + struct pasemi_mac *mac; /* Needed in intr handler */ +}; + +struct pasemi_mac_csring { + struct pasemi_dmachan chan; + unsigned int size; + unsigned int next_to_fill; + int events[2]; + int last_event; + int fun; +}; + +struct pasemi_mac { + struct net_device *netdev; + struct pci_dev *pdev; + struct pci_dev *dma_pdev; + struct pci_dev *iob_pdev; + struct phy_device *phydev; + struct napi_struct napi; + + int bufsz; /* RX ring buffer size */ + int last_cs; + int num_cs; + u32 dma_if; + u8 type; +#define MAC_TYPE_GMAC 1 +#define MAC_TYPE_XAUI 2 + + u8 mac_addr[6]; + + struct net_lro_mgr lro_mgr; + struct net_lro_desc lro_desc[MAX_LRO_DESCRIPTORS]; + struct timer_list rxtimer; + unsigned int lro_max_aggr; + + struct pasemi_mac_txring *tx; + struct pasemi_mac_rxring *rx; + struct pasemi_mac_csring *cs[MAX_CS]; + char tx_irq_name[10]; /* "eth%d tx" */ + char rx_irq_name[10]; /* "eth%d rx" */ + int link; + int speed; + int duplex; + + unsigned int msg_enable; +}; + +/* Software status descriptor (ring_info) */ +struct pasemi_mac_buffer { + struct sk_buff *skb; + dma_addr_t dma; +}; + +#define TX_DESC(tx, num) ((tx)->chan.ring_virt[(num) & (TX_RING_SIZE-1)]) +#define TX_DESC_INFO(tx, num) ((tx)->ring_info[(num) & (TX_RING_SIZE-1)]) +#define RX_DESC(rx, num) ((rx)->chan.ring_virt[(num) & (RX_RING_SIZE-1)]) +#define RX_DESC_INFO(rx, num) ((rx)->ring_info[(num) & (RX_RING_SIZE-1)]) +#define RX_BUFF(rx, num) ((rx)->buffers[(num) & (RX_RING_SIZE-1)]) +#define CS_DESC(cs, num) ((cs)->chan.ring_virt[(num) & (CS_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)) + +/* PCI register offsets and formats */ + + +/* MAC CFG register offsets */ +enum { + PAS_MAC_CFG_PCFG = 0x80, + PAS_MAC_CFG_MACCFG = 0x84, + PAS_MAC_CFG_ADR0 = 0x8c, + PAS_MAC_CFG_ADR1 = 0x90, + PAS_MAC_CFG_TXP = 0x98, + PAS_MAC_CFG_RMON = 0x100, + PAS_MAC_IPC_CHNL = 0x208, +}; + +/* MAC CFG register fields */ +#define PAS_MAC_CFG_PCFG_PE 0x80000000 +#define PAS_MAC_CFG_PCFG_CE 0x40000000 +#define PAS_MAC_CFG_PCFG_BU 0x20000000 +#define PAS_MAC_CFG_PCFG_TT 0x10000000 +#define PAS_MAC_CFG_PCFG_TSR_M 0x0c000000 +#define PAS_MAC_CFG_PCFG_TSR_10M 0x00000000 +#define PAS_MAC_CFG_PCFG_TSR_100M 0x04000000 +#define PAS_MAC_CFG_PCFG_TSR_1G 0x08000000 +#define PAS_MAC_CFG_PCFG_TSR_10G 0x0c000000 +#define PAS_MAC_CFG_PCFG_T24 0x02000000 +#define PAS_MAC_CFG_PCFG_PR 0x01000000 +#define PAS_MAC_CFG_PCFG_CRO_M 0x00ff0000 +#define PAS_MAC_CFG_PCFG_CRO_S 16 +#define PAS_MAC_CFG_PCFG_IPO_M 0x0000ff00 +#define PAS_MAC_CFG_PCFG_IPO_S 8 +#define PAS_MAC_CFG_PCFG_S1 0x00000080 +#define PAS_MAC_CFG_PCFG_IO_M 0x00000060 +#define PAS_MAC_CFG_PCFG_IO_MAC 0x00000000 +#define PAS_MAC_CFG_PCFG_IO_OFF 0x00000020 +#define PAS_MAC_CFG_PCFG_IO_IND_ETH 0x00000040 +#define PAS_MAC_CFG_PCFG_IO_IND_IP 0x00000060 +#define PAS_MAC_CFG_PCFG_LP 0x00000010 +#define PAS_MAC_CFG_PCFG_TS 0x00000008 +#define PAS_MAC_CFG_PCFG_HD 0x00000004 +#define PAS_MAC_CFG_PCFG_SPD_M 0x00000003 +#define PAS_MAC_CFG_PCFG_SPD_10M 0x00000000 +#define PAS_MAC_CFG_PCFG_SPD_100M 0x00000001 +#define PAS_MAC_CFG_PCFG_SPD_1G 0x00000002 +#define PAS_MAC_CFG_PCFG_SPD_10G 0x00000003 + +#define PAS_MAC_CFG_MACCFG_TXT_M 0x70000000 +#define PAS_MAC_CFG_MACCFG_TXT_S 28 +#define PAS_MAC_CFG_MACCFG_PRES_M 0x0f000000 +#define PAS_MAC_CFG_MACCFG_PRES_S 24 +#define PAS_MAC_CFG_MACCFG_MAXF_M 0x00ffff00 +#define PAS_MAC_CFG_MACCFG_MAXF_S 8 +#define PAS_MAC_CFG_MACCFG_MAXF(x) (((x) << PAS_MAC_CFG_MACCFG_MAXF_S) & \ + PAS_MAC_CFG_MACCFG_MAXF_M) +#define PAS_MAC_CFG_MACCFG_MINF_M 0x000000ff +#define PAS_MAC_CFG_MACCFG_MINF_S 0 + +#define PAS_MAC_CFG_TXP_FCF 0x01000000 +#define PAS_MAC_CFG_TXP_FCE 0x00800000 +#define PAS_MAC_CFG_TXP_FC 0x00400000 +#define PAS_MAC_CFG_TXP_FPC_M 0x00300000 +#define PAS_MAC_CFG_TXP_FPC_S 20 +#define PAS_MAC_CFG_TXP_FPC(x) (((x) << PAS_MAC_CFG_TXP_FPC_S) & \ + PAS_MAC_CFG_TXP_FPC_M) +#define PAS_MAC_CFG_TXP_RT 0x00080000 +#define PAS_MAC_CFG_TXP_BL 0x00040000 +#define PAS_MAC_CFG_TXP_SL_M 0x00030000 +#define PAS_MAC_CFG_TXP_SL_S 16 +#define PAS_MAC_CFG_TXP_SL(x) (((x) << PAS_MAC_CFG_TXP_SL_S) & \ + PAS_MAC_CFG_TXP_SL_M) +#define PAS_MAC_CFG_TXP_COB_M 0x0000f000 +#define PAS_MAC_CFG_TXP_COB_S 12 +#define PAS_MAC_CFG_TXP_COB(x) (((x) << PAS_MAC_CFG_TXP_COB_S) & \ + PAS_MAC_CFG_TXP_COB_M) +#define PAS_MAC_CFG_TXP_TIFT_M 0x00000f00 +#define PAS_MAC_CFG_TXP_TIFT_S 8 +#define PAS_MAC_CFG_TXP_TIFT(x) (((x) << PAS_MAC_CFG_TXP_TIFT_S) & \ + PAS_MAC_CFG_TXP_TIFT_M) +#define PAS_MAC_CFG_TXP_TIFG_M 0x000000ff +#define PAS_MAC_CFG_TXP_TIFG_S 0 +#define PAS_MAC_CFG_TXP_TIFG(x) (((x) << PAS_MAC_CFG_TXP_TIFG_S) & \ + PAS_MAC_CFG_TXP_TIFG_M) + +#define PAS_MAC_RMON(r) (0x100+(r)*4) + +#define PAS_MAC_IPC_CHNL_DCHNO_M 0x003f0000 +#define PAS_MAC_IPC_CHNL_DCHNO_S 16 +#define PAS_MAC_IPC_CHNL_DCHNO(x) (((x) << PAS_MAC_IPC_CHNL_DCHNO_S) & \ + PAS_MAC_IPC_CHNL_DCHNO_M) +#define PAS_MAC_IPC_CHNL_BCH_M 0x0000003f +#define PAS_MAC_IPC_CHNL_BCH_S 0 +#define PAS_MAC_IPC_CHNL_BCH(x) (((x) << PAS_MAC_IPC_CHNL_BCH_S) & \ + PAS_MAC_IPC_CHNL_BCH_M) + + +#endif /* PASEMI_MAC_H */ diff --git a/drivers/net/ethernet/pasemi/pasemi_mac_ethtool.c b/drivers/net/ethernet/pasemi/pasemi_mac_ethtool.c new file mode 100644 index 0000000..4825959 --- /dev/null +++ b/drivers/net/ethernet/pasemi/pasemi_mac_ethtool.c @@ -0,0 +1,160 @@ +/* + * Copyright (C) 2006-2008 PA Semi, Inc + * + * Ethtool hooks 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 +#include +#include +#include + +#include +#include "pasemi_mac.h" + +static struct { + const char str[ETH_GSTRING_LEN]; +} ethtool_stats_keys[] = { + { "rx-drops" }, + { "rx-bytes" }, + { "rx-packets" }, + { "rx-broadcast-packets" }, + { "rx-multicast-packets" }, + { "rx-crc-errors" }, + { "rx-undersize-errors" }, + { "rx-oversize-errors" }, + { "rx-short-fragment-errors" }, + { "rx-jabber-errors" }, + { "rx-64-byte-packets" }, + { "rx-65-127-byte-packets" }, + { "rx-128-255-byte-packets" }, + { "rx-256-511-byte-packets" }, + { "rx-512-1023-byte-packets" }, + { "rx-1024-1518-byte-packets" }, + { "rx-pause-frames" }, + { "tx-bytes" }, + { "tx-packets" }, + { "tx-broadcast-packets" }, + { "tx-multicast-packets" }, + { "tx-collisions" }, + { "tx-late-collisions" }, + { "tx-excessive-collisions" }, + { "tx-crc-errors" }, + { "tx-undersize-errors" }, + { "tx-oversize-errors" }, + { "tx-64-byte-packets" }, + { "tx-65-127-byte-packets" }, + { "tx-128-255-byte-packets" }, + { "tx-256-511-byte-packets" }, + { "tx-512-1023-byte-packets" }, + { "tx-1024-1518-byte-packets" }, +}; + +static int +pasemi_mac_ethtool_get_settings(struct net_device *netdev, + struct ethtool_cmd *cmd) +{ + struct pasemi_mac *mac = netdev_priv(netdev); + struct phy_device *phydev = mac->phydev; + + if (!phydev) + return -EOPNOTSUPP; + + return phy_ethtool_gset(phydev, cmd); +} + +static int +pasemi_mac_ethtool_set_settings(struct net_device *netdev, + struct ethtool_cmd *cmd) +{ + struct pasemi_mac *mac = netdev_priv(netdev); + struct phy_device *phydev = mac->phydev; + + if (!phydev) + return -EOPNOTSUPP; + + return phy_ethtool_sset(phydev, cmd); +} + +static u32 +pasemi_mac_ethtool_get_msglevel(struct net_device *netdev) +{ + struct pasemi_mac *mac = netdev_priv(netdev); + return mac->msg_enable; +} + +static void +pasemi_mac_ethtool_set_msglevel(struct net_device *netdev, + u32 level) +{ + struct pasemi_mac *mac = netdev_priv(netdev); + mac->msg_enable = level; +} + + +static void +pasemi_mac_ethtool_get_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ering) +{ + struct pasemi_mac *mac = netdev_priv(netdev); + + ering->tx_max_pending = TX_RING_SIZE/2; + ering->tx_pending = RING_USED(mac->tx)/2; + ering->rx_max_pending = RX_RING_SIZE/4; + ering->rx_pending = RING_USED(mac->rx)/4; +} + +static int pasemi_mac_get_sset_count(struct net_device *netdev, int sset) +{ + switch (sset) { + case ETH_SS_STATS: + return ARRAY_SIZE(ethtool_stats_keys); + default: + return -EOPNOTSUPP; + } +} + +static void pasemi_mac_get_ethtool_stats(struct net_device *netdev, + struct ethtool_stats *stats, u64 *data) +{ + struct pasemi_mac *mac = netdev_priv(netdev); + int i; + + data[0] = pasemi_read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if)) + >> PAS_DMA_RXINT_RCMDSTA_DROPS_S; + for (i = 0; i < 32; i++) + data[1+i] = pasemi_read_mac_reg(mac->dma_if, PAS_MAC_RMON(i)); +} + +static void pasemi_mac_get_strings(struct net_device *netdev, u32 stringset, + u8 *data) +{ + memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys)); +} + +const struct ethtool_ops pasemi_mac_ethtool_ops = { + .get_settings = pasemi_mac_ethtool_get_settings, + .set_settings = pasemi_mac_ethtool_set_settings, + .get_msglevel = pasemi_mac_ethtool_get_msglevel, + .set_msglevel = pasemi_mac_ethtool_set_msglevel, + .get_link = ethtool_op_get_link, + .get_ringparam = pasemi_mac_ethtool_get_ringparam, + .get_strings = pasemi_mac_get_strings, + .get_sset_count = pasemi_mac_get_sset_count, + .get_ethtool_stats = pasemi_mac_get_ethtool_stats, +}; + diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c deleted file mode 100644 index 9ec112c..0000000 --- a/drivers/net/pasemi_mac.c +++ /dev/null @@ -1,1910 +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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -#include -#include -#include - -#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 - */ - -#define LRO_MAX_AGGR 64 - -#define PE_MIN_MTU 64 -#define PE_MAX_MTU 9000 -#define PE_DEF_MTU ETH_DATA_LEN - -#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) - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR ("Olof Johansson "); -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"); - -extern const struct ethtool_ops pasemi_mac_ethtool_ops; - -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(unsigned int reg, unsigned int val) -{ - pasemi_write_iob_reg(reg, val); -} - -static unsigned int read_mac_reg(const struct pasemi_mac *mac, unsigned int reg) -{ - return pasemi_read_mac_reg(mac->dma_if, reg); -} - -static void write_mac_reg(const struct pasemi_mac *mac, unsigned int reg, - unsigned int val) -{ - pasemi_write_mac_reg(mac->dma_if, reg, val); -} - -static unsigned int read_dma_reg(unsigned int reg) -{ - return pasemi_read_dma_reg(reg); -} - -static void write_dma_reg(unsigned int reg, unsigned int val) -{ - pasemi_write_dma_reg(reg, val); -} - -static struct pasemi_mac_rxring *rx_ring(const struct pasemi_mac *mac) -{ - return mac->rx; -} - -static struct pasemi_mac_txring *tx_ring(const struct pasemi_mac *mac) -{ - return mac->tx; -} - -static inline void prefetch_skb(const struct sk_buff *skb) -{ - const void *d = skb; - - prefetch(d); - prefetch(d+64); - prefetch(d+128); - prefetch(d+192); -} - -static int mac_to_intf(struct pasemi_mac *mac) -{ - struct pci_dev *pdev = mac->pdev; - u32 tmp; - int nintf, off, i, j; - int devfn = pdev->devfn; - - tmp = read_dma_reg(PAS_DMA_CAP_IFI); - nintf = (tmp & PAS_DMA_CAP_IFI_NIN_M) >> PAS_DMA_CAP_IFI_NIN_S; - off = (tmp & PAS_DMA_CAP_IFI_IOFF_M) >> PAS_DMA_CAP_IFI_IOFF_S; - - /* IOFF contains the offset to the registers containing the - * DMA interface-to-MAC-pci-id mappings, and NIN contains number - * of total interfaces. Each register contains 4 devfns. - * Just do a linear search until we find the devfn of the MAC - * we're trying to look up. - */ - - for (i = 0; i < (nintf+3)/4; i++) { - tmp = read_dma_reg(off+4*i); - for (j = 0; j < 4; j++) { - if (((tmp >> (8*j)) & 0xff) == devfn) - return i*4 + j; - } - } - return -1; -} - -static void pasemi_mac_intf_disable(struct pasemi_mac *mac) -{ - unsigned int flags; - - flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG); - flags &= ~PAS_MAC_CFG_PCFG_PE; - write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags); -} - -static void pasemi_mac_intf_enable(struct pasemi_mac *mac) -{ - unsigned int flags; - - flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG); - flags |= PAS_MAC_CFG_PCFG_PE; - write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags); -} - -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_set_mac_addr(struct net_device *dev, void *p) -{ - struct pasemi_mac *mac = netdev_priv(dev); - struct sockaddr *addr = p; - unsigned int adr0, adr1; - - if (!is_valid_ether_addr(addr->sa_data)) - return -EINVAL; - - memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); - - adr0 = dev->dev_addr[2] << 24 | - dev->dev_addr[3] << 16 | - dev->dev_addr[4] << 8 | - dev->dev_addr[5]; - adr1 = read_mac_reg(mac, PAS_MAC_CFG_ADR1); - adr1 &= ~0xffff; - adr1 |= dev->dev_addr[0] << 8 | dev->dev_addr[1]; - - pasemi_mac_intf_disable(mac); - write_mac_reg(mac, PAS_MAC_CFG_ADR0, adr0); - write_mac_reg(mac, PAS_MAC_CFG_ADR1, adr1); - pasemi_mac_intf_enable(mac); - - return 0; -} - -static int get_skb_hdr(struct sk_buff *skb, void **iphdr, - void **tcph, u64 *hdr_flags, void *data) -{ - u64 macrx = (u64) data; - unsigned int ip_len; - struct iphdr *iph; - - /* IPv4 header checksum failed */ - if ((macrx & XCT_MACRX_HTY_M) != XCT_MACRX_HTY_IPV4_OK) - return -1; - - /* non tcp packet */ - skb_reset_network_header(skb); - iph = ip_hdr(skb); - if (iph->protocol != IPPROTO_TCP) - return -1; - - ip_len = ip_hdrlen(skb); - skb_set_transport_header(skb, ip_len); - *tcph = tcp_hdr(skb); - - /* check if ip header and tcp header are complete */ - if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb)) - return -1; - - *hdr_flags = LRO_IPV4 | LRO_TCP; - *iphdr = iph; - - return 0; -} - -static int pasemi_mac_unmap_tx_skb(struct pasemi_mac *mac, - const int nfrags, - struct sk_buff *skb, - const dma_addr_t *dmas) -{ - int f; - struct pci_dev *pdev = mac->dma_pdev; - - pci_unmap_single(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(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 struct pasemi_mac_csring *pasemi_mac_setup_csring(struct pasemi_mac *mac) -{ - struct pasemi_mac_csring *ring; - u32 val; - unsigned int cfg; - int chno; - - ring = pasemi_dma_alloc_chan(TXCHAN, sizeof(struct pasemi_mac_csring), - offsetof(struct pasemi_mac_csring, chan)); - - if (!ring) { - dev_err(&mac->pdev->dev, "Can't allocate checksum channel\n"); - goto out_chan; - } - - chno = ring->chan.chno; - - ring->size = CS_RING_SIZE; - ring->next_to_fill = 0; - - /* Allocate descriptors */ - if (pasemi_dma_alloc_ring(&ring->chan, CS_RING_SIZE)) - goto out_ring_desc; - - write_dma_reg(PAS_DMA_TXCHAN_BASEL(chno), - PAS_DMA_TXCHAN_BASEL_BRBL(ring->chan.ring_dma)); - val = PAS_DMA_TXCHAN_BASEU_BRBH(ring->chan.ring_dma >> 32); - val |= PAS_DMA_TXCHAN_BASEU_SIZ(CS_RING_SIZE >> 3); - - write_dma_reg(PAS_DMA_TXCHAN_BASEU(chno), val); - - ring->events[0] = pasemi_dma_alloc_flag(); - ring->events[1] = pasemi_dma_alloc_flag(); - if (ring->events[0] < 0 || ring->events[1] < 0) - goto out_flags; - - pasemi_dma_clear_flag(ring->events[0]); - pasemi_dma_clear_flag(ring->events[1]); - - ring->fun = pasemi_dma_alloc_fun(); - if (ring->fun < 0) - goto out_fun; - - cfg = PAS_DMA_TXCHAN_CFG_TY_FUNC | PAS_DMA_TXCHAN_CFG_UP | - PAS_DMA_TXCHAN_CFG_TATTR(ring->fun) | - PAS_DMA_TXCHAN_CFG_LPSQ | PAS_DMA_TXCHAN_CFG_LPDQ; - - if (translation_enabled()) - cfg |= PAS_DMA_TXCHAN_CFG_TRD | PAS_DMA_TXCHAN_CFG_TRR; - - write_dma_reg(PAS_DMA_TXCHAN_CFG(chno), cfg); - - /* enable channel */ - pasemi_dma_start_chan(&ring->chan, PAS_DMA_TXCHAN_TCMDSTA_SZ | - PAS_DMA_TXCHAN_TCMDSTA_DB | - PAS_DMA_TXCHAN_TCMDSTA_DE | - PAS_DMA_TXCHAN_TCMDSTA_DA); - - return ring; - -out_fun: -out_flags: - if (ring->events[0] >= 0) - pasemi_dma_free_flag(ring->events[0]); - if (ring->events[1] >= 0) - pasemi_dma_free_flag(ring->events[1]); - pasemi_dma_free_ring(&ring->chan); -out_ring_desc: - pasemi_dma_free_chan(&ring->chan); -out_chan: - - return NULL; -} - -static void pasemi_mac_setup_csrings(struct pasemi_mac *mac) -{ - int i; - mac->cs[0] = pasemi_mac_setup_csring(mac); - if (mac->type == MAC_TYPE_XAUI) - mac->cs[1] = pasemi_mac_setup_csring(mac); - else - mac->cs[1] = 0; - - for (i = 0; i < MAX_CS; i++) - if (mac->cs[i]) - mac->num_cs++; -} - -static void pasemi_mac_free_csring(struct pasemi_mac_csring *csring) -{ - pasemi_dma_stop_chan(&csring->chan); - pasemi_dma_free_flag(csring->events[0]); - pasemi_dma_free_flag(csring->events[1]); - pasemi_dma_free_ring(&csring->chan); - pasemi_dma_free_chan(&csring->chan); - pasemi_dma_free_fun(csring->fun); -} - -static int pasemi_mac_setup_rx_resources(const struct net_device *dev) -{ - struct pasemi_mac_rxring *ring; - struct pasemi_mac *mac = netdev_priv(dev); - int chno; - unsigned int cfg; - - ring = pasemi_dma_alloc_chan(RXCHAN, sizeof(struct pasemi_mac_rxring), - offsetof(struct pasemi_mac_rxring, chan)); - - if (!ring) { - dev_err(&mac->pdev->dev, "Can't allocate RX channel\n"); - goto out_chan; - } - chno = ring->chan.chno; - - 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 */ - if (pasemi_dma_alloc_ring(&ring->chan, RX_RING_SIZE)) - goto out_ring_desc; - - ring->buffers = dma_alloc_coherent(&mac->dma_pdev->dev, - RX_RING_SIZE * sizeof(u64), - &ring->buf_dma, GFP_KERNEL); - if (!ring->buffers) - goto out_ring_desc; - - memset(ring->buffers, 0, RX_RING_SIZE * sizeof(u64)); - - write_dma_reg(PAS_DMA_RXCHAN_BASEL(chno), - PAS_DMA_RXCHAN_BASEL_BRBL(ring->chan.ring_dma)); - - write_dma_reg(PAS_DMA_RXCHAN_BASEU(chno), - PAS_DMA_RXCHAN_BASEU_BRBH(ring->chan.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(PAS_DMA_RXCHAN_CFG(chno), cfg); - - write_dma_reg(PAS_DMA_RXINT_BASEL(mac->dma_if), - PAS_DMA_RXINT_BASEL_BRBL(ring->buf_dma)); - - write_dma_reg(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(2) | 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(PAS_DMA_RXINT_CFG(mac->dma_if), cfg); - - ring->next_to_fill = 0; - ring->next_to_clean = 0; - ring->mac = mac; - mac->rx = ring; - - return 0; - -out_ring_desc: - kfree(ring->ring_info); -out_ring_info: - pasemi_dma_free_chan(&ring->chan); -out_chan: - return -ENOMEM; -} - -static struct pasemi_mac_txring * -pasemi_mac_setup_tx_resources(const struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - u32 val; - struct pasemi_mac_txring *ring; - unsigned int cfg; - int chno; - - ring = pasemi_dma_alloc_chan(TXCHAN, sizeof(struct pasemi_mac_txring), - offsetof(struct pasemi_mac_txring, chan)); - - if (!ring) { - dev_err(&mac->pdev->dev, "Can't allocate TX channel\n"); - goto out_chan; - } - - chno = ring->chan.chno; - - 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 */ - if (pasemi_dma_alloc_ring(&ring->chan, TX_RING_SIZE)) - goto out_ring_desc; - - write_dma_reg(PAS_DMA_TXCHAN_BASEL(chno), - PAS_DMA_TXCHAN_BASEL_BRBL(ring->chan.ring_dma)); - val = PAS_DMA_TXCHAN_BASEU_BRBH(ring->chan.ring_dma >> 32); - val |= PAS_DMA_TXCHAN_BASEU_SIZ(TX_RING_SIZE >> 3); - - write_dma_reg(PAS_DMA_TXCHAN_BASEU(chno), 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(4); - - if (translation_enabled()) - cfg |= PAS_DMA_TXCHAN_CFG_TRD | PAS_DMA_TXCHAN_CFG_TRR; - - write_dma_reg(PAS_DMA_TXCHAN_CFG(chno), cfg); - - ring->next_to_fill = 0; - ring->next_to_clean = 0; - ring->mac = mac; - - return ring; - -out_ring_desc: - kfree(ring->ring_info); -out_ring_info: - pasemi_dma_free_chan(&ring->chan); -out_chan: - return NULL; -} - -static void pasemi_mac_free_tx_resources(struct pasemi_mac *mac) -{ - struct pasemi_mac_txring *txring = tx_ring(mac); - unsigned int i, j; - struct pasemi_mac_buffer *info; - dma_addr_t dmas[MAX_SKB_FRAGS+1]; - int freed, nfrags; - int start, limit; - - start = txring->next_to_clean; - limit = txring->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 = &txring->ring_info[(i+1) & (TX_RING_SIZE-1)]; - if (info->dma && info->skb) { - nfrags = skb_shinfo(info->skb)->nr_frags; - for (j = 0; j <= nfrags; j++) - dmas[j] = txring->ring_info[(i+1+j) & - (TX_RING_SIZE-1)].dma; - freed = pasemi_mac_unmap_tx_skb(mac, nfrags, - info->skb, dmas); - } else - freed = 2; - } - - kfree(txring->ring_info); - pasemi_dma_free_chan(&txring->chan); - -} - -static void pasemi_mac_free_rx_buffers(struct pasemi_mac *mac) -{ - struct pasemi_mac_rxring *rx = rx_ring(mac); - unsigned int i; - struct pasemi_mac_buffer *info; - - for (i = 0; i < RX_RING_SIZE; i++) { - info = &RX_DESC_INFO(rx, 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_BUFF(rx, i) = 0; -} - -static void pasemi_mac_free_rx_resources(struct pasemi_mac *mac) -{ - pasemi_mac_free_rx_buffers(mac); - - dma_free_coherent(&mac->dma_pdev->dev, RX_RING_SIZE * sizeof(u64), - rx_ring(mac)->buffers, rx_ring(mac)->buf_dma); - - kfree(rx_ring(mac)->ring_info); - pasemi_dma_free_chan(&rx_ring(mac)->chan); - mac->rx = NULL; -} - -static void pasemi_mac_replenish_rx_ring(const struct net_device *dev, - const int limit) -{ - const struct pasemi_mac *mac = netdev_priv(dev); - struct pasemi_mac_rxring *rx = rx_ring(mac); - int fill, count; - - if (limit <= 0) - return; - - fill = rx_ring(mac)->next_to_fill; - for (count = 0; count < limit; count++) { - struct pasemi_mac_buffer *info = &RX_DESC_INFO(rx, fill); - u64 *buff = &RX_BUFF(rx, fill); - struct sk_buff *skb; - dma_addr_t dma; - - /* Entry in use? */ - WARN_ON(*buff); - - skb = dev_alloc_skb(mac->bufsz); - skb_reserve(skb, LOCAL_SKB_ALIGN); - - if (unlikely(!skb)) - break; - - dma = pci_map_single(mac->dma_pdev, skb->data, - mac->bufsz - LOCAL_SKB_ALIGN, - PCI_DMA_FROMDEVICE); - - if (unlikely(pci_dma_mapping_error(mac->dma_pdev, dma))) { - dev_kfree_skb_irq(info->skb); - break; - } - - info->skb = skb; - info->dma = dma; - *buff = XCT_RXB_LEN(mac->bufsz) | XCT_RXB_ADDR(dma); - fill++; - } - - wmb(); - - write_dma_reg(PAS_DMA_RXINT_INCR(mac->dma_if), count); - - rx_ring(mac)->next_to_fill = (rx_ring(mac)->next_to_fill + count) & - (RX_RING_SIZE - 1); -} - -static void pasemi_mac_restart_rx_intr(const struct pasemi_mac *mac) -{ - struct pasemi_mac_rxring *rx = rx_ring(mac); - unsigned int reg, pcnt; - /* Re-enable packet count interrupts: finally - * ack the packet count interrupt we got in rx_intr. - */ - - pcnt = *rx->chan.status & PAS_STATUS_PCNT_M; - - reg = PAS_IOB_DMA_RXCH_RESET_PCNT(pcnt) | PAS_IOB_DMA_RXCH_RESET_PINTC; - - if (*rx->chan.status & PAS_STATUS_TIMER) - reg |= PAS_IOB_DMA_RXCH_RESET_TINTC; - - write_iob_reg(PAS_IOB_DMA_RXCH_RESET(mac->rx->chan.chno), reg); -} - -static void pasemi_mac_restart_tx_intr(const struct pasemi_mac *mac) -{ - unsigned int reg, pcnt; - - /* Re-enable packet count interrupts */ - pcnt = *tx_ring(mac)->chan.status & PAS_STATUS_PCNT_M; - - reg = PAS_IOB_DMA_TXCH_RESET_PCNT(pcnt) | PAS_IOB_DMA_TXCH_RESET_PINTC; - - write_iob_reg(PAS_IOB_DMA_TXCH_RESET(tx_ring(mac)->chan.chno), reg); -} - - -static inline void pasemi_mac_rx_error(const struct pasemi_mac *mac, - const u64 macrx) -{ - unsigned int rcmdsta, ccmdsta; - struct pasemi_dmachan *chan = &rx_ring(mac)->chan; - - if (!netif_msg_rx_err(mac)) - return; - - rcmdsta = read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if)); - ccmdsta = read_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(chan->chno)); - - printk(KERN_ERR "pasemi_mac: rx error. macrx %016llx, rx status %llx\n", - macrx, *chan->status); - - printk(KERN_ERR "pasemi_mac: rcmdsta %08x ccmdsta %08x\n", - rcmdsta, ccmdsta); -} - -static inline void pasemi_mac_tx_error(const struct pasemi_mac *mac, - const u64 mactx) -{ - unsigned int cmdsta; - struct pasemi_dmachan *chan = &tx_ring(mac)->chan; - - if (!netif_msg_tx_err(mac)) - return; - - cmdsta = read_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(chan->chno)); - - printk(KERN_ERR "pasemi_mac: tx error. mactx 0x%016llx, "\ - "tx status 0x%016llx\n", mactx, *chan->status); - - printk(KERN_ERR "pasemi_mac: tcmdsta 0x%08x\n", cmdsta); -} - -static int pasemi_mac_clean_rx(struct pasemi_mac_rxring *rx, - const int limit) -{ - const struct pasemi_dmachan *chan = &rx->chan; - struct pasemi_mac *mac = rx->mac; - struct pci_dev *pdev = mac->dma_pdev; - unsigned int n; - int count, buf_index, tot_bytes, packets; - struct pasemi_mac_buffer *info; - struct sk_buff *skb; - unsigned int len; - u64 macrx, eval; - dma_addr_t dma; - - tot_bytes = 0; - packets = 0; - - spin_lock(&rx->lock); - - n = rx->next_to_clean; - - prefetch(&RX_DESC(rx, n)); - - for (count = 0; count < limit; count++) { - macrx = RX_DESC(rx, n); - prefetch(&RX_DESC(rx, n+4)); - - if ((macrx & XCT_MACRX_E) || - (*chan->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_DESC(rx, n+1) & XCT_RXRES_8B_EVAL_M) >> - XCT_RXRES_8B_EVAL_S; - buf_index = eval-1; - - dma = (RX_DESC(rx, n+2) & XCT_PTR_ADDR_M); - info = &RX_DESC_INFO(rx, buf_index); - - skb = info->skb; - - prefetch_skb(skb); - - len = (macrx & XCT_MACRX_LLEN_M) >> XCT_MACRX_LLEN_S; - - pci_unmap_single(pdev, dma, mac->bufsz - LOCAL_SKB_ALIGN, - PCI_DMA_FROMDEVICE); - - if (macrx & XCT_MACRX_CRC) { - /* CRC error flagged */ - mac->netdev->stats.rx_errors++; - mac->netdev->stats.rx_crc_errors++; - /* No need to free skb, it'll be reused */ - goto next; - } - - info->skb = NULL; - info->dma = 0; - - 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_checksum_none_assert(skb); - - packets++; - tot_bytes += len; - - /* Don't include CRC */ - skb_put(skb, len-4); - - skb->protocol = eth_type_trans(skb, mac->netdev); - lro_receive_skb(&mac->lro_mgr, skb, (void *)macrx); - -next: - RX_DESC(rx, n) = 0; - RX_DESC(rx, 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(rx, buf_index) = 0; - - n += 4; - } - - if (n > RX_RING_SIZE) { - /* Errata 5971 workaround: L2 target of headers */ - write_iob_reg(PAS_IOB_COM_PKTHDRCNT, 0); - n &= (RX_RING_SIZE-1); - } - - rx_ring(mac)->next_to_clean = n; - - lro_flush_all(&mac->lro_mgr); - - /* 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(PAS_DMA_RXCHAN_INCR(mac->rx->chan.chno), count << 1); - - pasemi_mac_replenish_rx_ring(mac->netdev, count); - - mac->netdev->stats.rx_bytes += tot_bytes; - mac->netdev->stats.rx_packets += packets; - - spin_unlock(&rx_ring(mac)->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_txring *txring) -{ - struct pasemi_dmachan *chan = &txring->chan; - struct pasemi_mac *mac = txring->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]; - int nf[TX_CLEAN_BATCHSIZE]; - int nr_frags; - - total_count = 0; - batch_limit = TX_CLEAN_BATCHSIZE; -restart: - spin_lock_irqsave(&txring->lock, flags); - - start = txring->next_to_clean; - ring_limit = txring->next_to_fill; - - prefetch(&TX_DESC_INFO(txring, start+1).skb); - - /* 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_DESC(txring, i); - struct sk_buff *skb; - - if ((mactx & XCT_MACTX_E) || - (*chan->status & PAS_STATUS_ERROR)) - pasemi_mac_tx_error(mac, mactx); - - /* Skip over control descriptors */ - if (!(mactx & XCT_MACTX_LLEN_M)) { - TX_DESC(txring, i) = 0; - TX_DESC(txring, i+1) = 0; - buf_count = 2; - continue; - } - - skb = TX_DESC_INFO(txring, i+1).skb; - nr_frags = TX_DESC_INFO(txring, i).dma; - - if (unlikely(mactx & XCT_MACTX_O)) - /* Not yet transmitted */ - break; - - buf_count = 2 + nr_frags; - /* 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++; - - for (j = 0; j <= nr_frags; j++) - dmas[descr_count][j] = TX_DESC_INFO(txring, i+1+j).dma; - - skbs[descr_count] = skb; - nf[descr_count] = nr_frags; - - TX_DESC(txring, i) = 0; - TX_DESC(txring, i+1) = 0; - - descr_count++; - } - txring->next_to_clean = i & (TX_RING_SIZE-1); - - spin_unlock_irqrestore(&txring->lock, flags); - netif_wake_queue(mac->netdev); - - for (i = 0; i < descr_count; i++) - pasemi_mac_unmap_tx_skb(mac, nf[i], 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) -{ - const struct pasemi_mac_rxring *rxring = data; - struct pasemi_mac *mac = rxring->mac; - const struct pasemi_dmachan *chan = &rxring->chan; - unsigned int reg; - - if (!(*chan->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 (*chan->status & PAS_STATUS_SOFT) - reg |= PAS_IOB_DMA_RXCH_RESET_SINTC; - if (*chan->status & PAS_STATUS_ERROR) - reg |= PAS_IOB_DMA_RXCH_RESET_DINTC; - - napi_schedule(&mac->napi); - - write_iob_reg(PAS_IOB_DMA_RXCH_RESET(chan->chno), reg); - - return IRQ_HANDLED; -} - -#define TX_CLEAN_INTERVAL HZ - -static void pasemi_mac_tx_timer(unsigned long data) -{ - struct pasemi_mac_txring *txring = (struct pasemi_mac_txring *)data; - struct pasemi_mac *mac = txring->mac; - - pasemi_mac_clean_tx(txring); - - mod_timer(&txring->clean_timer, jiffies + TX_CLEAN_INTERVAL); - - pasemi_mac_restart_tx_intr(mac); -} - -static irqreturn_t pasemi_mac_tx_intr(int irq, void *data) -{ - struct pasemi_mac_txring *txring = data; - const struct pasemi_dmachan *chan = &txring->chan; - struct pasemi_mac *mac = txring->mac; - unsigned int reg; - - if (!(*chan->status & PAS_STATUS_CAUSE_M)) - return IRQ_NONE; - - reg = 0; - - if (*chan->status & PAS_STATUS_SOFT) - reg |= PAS_IOB_DMA_TXCH_RESET_SINTC; - if (*chan->status & PAS_STATUS_ERROR) - reg |= PAS_IOB_DMA_TXCH_RESET_DINTC; - - mod_timer(&txring->clean_timer, jiffies + (TX_CLEAN_INTERVAL)*2); - - napi_schedule(&mac->napi); - - if (reg) - write_iob_reg(PAS_IOB_DMA_TXCH_RESET(chan->chno), 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); - pasemi_mac_intf_disable(mac); - mac->link = 0; - - return; - } else { - pasemi_mac_intf_enable(mac); - 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; - - dn = pci_device_to_OF_node(mac->pdev); - phy_dn = of_parse_phandle(dn, "phy-handle", 0); - of_node_put(phy_dn); - - mac->link = 0; - mac->speed = 0; - mac->duplex = -1; - - phydev = of_phy_connect(dev, phy_dn, &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; -} - - -static int pasemi_mac_open(struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - unsigned int flags; - int i, ret; - - 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); - - ret = pasemi_mac_setup_rx_resources(dev); - if (ret) - goto out_rx_resources; - - mac->tx = pasemi_mac_setup_tx_resources(dev); - - if (!mac->tx) - goto out_tx_ring; - - /* We might already have allocated rings in case mtu was changed - * before interface was brought up. - */ - if (dev->mtu > 1500 && !mac->num_cs) { - pasemi_mac_setup_csrings(mac); - if (!mac->num_cs) - goto out_tx_ring; - } - - /* Zero out rmon counters */ - for (i = 0; i < 32; i++) - write_mac_reg(mac, PAS_MAC_RMON(i), 0); - - /* 0x3ff with 33MHz clock is about 31us */ - write_iob_reg(PAS_IOB_DMA_COM_TIMEOUTCFG, - PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(0x3ff)); - - write_iob_reg(PAS_IOB_DMA_RXCH_CFG(mac->rx->chan.chno), - PAS_IOB_DMA_RXCH_CFG_CNTTH(256)); - - write_iob_reg(PAS_IOB_DMA_TXCH_CFG(mac->tx->chan.chno), - PAS_IOB_DMA_TXCH_CFG_CNTTH(32)); - - write_mac_reg(mac, PAS_MAC_IPC_CHNL, - PAS_MAC_IPC_CHNL_DCHNO(mac->rx->chan.chno) | - PAS_MAC_IPC_CHNL_BCH(mac->rx->chan.chno)); - - /* enable rx if */ - write_dma_reg(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 */ - pasemi_dma_start_chan(&rx_ring(mac)->chan, PAS_DMA_RXCHAN_CCMDSTA_DU | - PAS_DMA_RXCHAN_CCMDSTA_OD | - PAS_DMA_RXCHAN_CCMDSTA_FD | - PAS_DMA_RXCHAN_CCMDSTA_DT); - - /* enable tx channel */ - pasemi_dma_start_chan(&tx_ring(mac)->chan, 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(PAS_DMA_RXCHAN_INCR(rx_ring(mac)->chan.chno), - RX_RING_SIZE>>1); - - /* Clear out any residual packet count state from firmware */ - pasemi_mac_restart_rx_intr(mac); - pasemi_mac_restart_tx_intr(mac); - - flags = PAS_MAC_CFG_PCFG_S1 | 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); - if (ret) { - /* Since we won't get link notification, just enable RX */ - pasemi_mac_intf_enable(mac); - if (mac->type == MAC_TYPE_GMAC) { - /* Warn for missing PHY on SGMII (1Gig) ports */ - dev_warn(&mac->pdev->dev, - "PHY init failed: %d.\n", ret); - dev_warn(&mac->pdev->dev, - "Defaulting to 1Gbit full duplex\n"); - } - } - - netif_start_queue(dev); - napi_enable(&mac->napi); - - snprintf(mac->tx_irq_name, sizeof(mac->tx_irq_name), "%s tx", - dev->name); - - ret = request_irq(mac->tx->chan.irq, pasemi_mac_tx_intr, IRQF_DISABLED, - mac->tx_irq_name, mac->tx); - if (ret) { - dev_err(&mac->pdev->dev, "request_irq of irq %d failed: %d\n", - mac->tx->chan.irq, ret); - goto out_tx_int; - } - - snprintf(mac->rx_irq_name, sizeof(mac->rx_irq_name), "%s rx", - dev->name); - - ret = request_irq(mac->rx->chan.irq, pasemi_mac_rx_intr, IRQF_DISABLED, - mac->rx_irq_name, mac->rx); - if (ret) { - dev_err(&mac->pdev->dev, "request_irq of irq %d failed: %d\n", - mac->rx->chan.irq, ret); - goto out_rx_int; - } - - if (mac->phydev) - phy_start(mac->phydev); - - init_timer(&mac->tx->clean_timer); - mac->tx->clean_timer.function = pasemi_mac_tx_timer; - mac->tx->clean_timer.data = (unsigned long)mac->tx; - mac->tx->clean_timer.expires = jiffies+HZ; - add_timer(&mac->tx->clean_timer); - - return 0; - -out_rx_int: - free_irq(mac->tx->chan.irq, mac->tx); -out_tx_int: - napi_disable(&mac->napi); - netif_stop_queue(dev); -out_tx_ring: - if (mac->tx) - pasemi_mac_free_tx_resources(mac); - pasemi_mac_free_rx_resources(mac); -out_rx_resources: - - return ret; -} - -#define MAX_RETRIES 5000 - -static void pasemi_mac_pause_txchan(struct pasemi_mac *mac) -{ - unsigned int sta, retries; - int txch = tx_ring(mac)->chan.chno; - - write_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(txch), - PAS_DMA_TXCHAN_TCMDSTA_ST); - - for (retries = 0; retries < MAX_RETRIES; retries++) { - sta = read_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(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, tcmdsta %08x\n", sta); - - write_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(txch), 0); -} - -static void pasemi_mac_pause_rxchan(struct pasemi_mac *mac) -{ - unsigned int sta, retries; - int rxch = rx_ring(mac)->chan.chno; - - write_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(rxch), - PAS_DMA_RXCHAN_CCMDSTA_ST); - for (retries = 0; retries < MAX_RETRIES; retries++) { - sta = read_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(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, ccmdsta 08%x\n", sta); - write_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(rxch), 0); -} - -static void pasemi_mac_pause_rxint(struct pasemi_mac *mac) -{ - unsigned int sta, retries; - - write_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if), - PAS_DMA_RXINT_RCMDSTA_ST); - for (retries = 0; retries < MAX_RETRIES; retries++) { - sta = read_dma_reg(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, rcmdsta %08x\n", sta); - write_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if), 0); -} - -static int pasemi_mac_close(struct net_device *dev) -{ - struct pasemi_mac *mac = netdev_priv(dev); - unsigned int sta; - int rxch, txch, i; - - rxch = rx_ring(mac)->chan.chno; - txch = tx_ring(mac)->chan.chno; - - if (mac->phydev) { - phy_stop(mac->phydev); - phy_disconnect(mac->phydev); - } - - del_timer_sync(&mac->tx->clean_timer); - - netif_stop_queue(dev); - napi_disable(&mac->napi); - - sta = read_dma_reg(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(PAS_DMA_RXCHAN_CCMDSTA(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(PAS_DMA_TXCHAN_TCMDSTA(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(tx_ring(mac)); - pasemi_mac_clean_rx(rx_ring(mac), RX_RING_SIZE); - - pasemi_mac_pause_txchan(mac); - pasemi_mac_pause_rxint(mac); - pasemi_mac_pause_rxchan(mac); - pasemi_mac_intf_disable(mac); - - free_irq(mac->tx->chan.irq, mac->tx); - free_irq(mac->rx->chan.irq, mac->rx); - - for (i = 0; i < mac->num_cs; i++) { - pasemi_mac_free_csring(mac->cs[i]); - mac->cs[i] = NULL; - } - - mac->num_cs = 0; - - /* Free resources */ - pasemi_mac_free_rx_resources(mac); - pasemi_mac_free_tx_resources(mac); - - return 0; -} - -static void pasemi_mac_queue_csdesc(const struct sk_buff *skb, - const dma_addr_t *map, - const unsigned int *map_size, - struct pasemi_mac_txring *txring, - struct pasemi_mac_csring *csring) -{ - u64 fund; - dma_addr_t cs_dest; - const int nh_off = skb_network_offset(skb); - const int nh_len = skb_network_header_len(skb); - const int nfrags = skb_shinfo(skb)->nr_frags; - int cs_size, i, fill, hdr, cpyhdr, evt; - dma_addr_t csdma; - - fund = XCT_FUN_ST | XCT_FUN_RR_8BRES | - XCT_FUN_O | XCT_FUN_FUN(csring->fun) | - XCT_FUN_CRM_SIG | XCT_FUN_LLEN(skb->len - nh_off) | - XCT_FUN_SHL(nh_len >> 2) | XCT_FUN_SE; - - switch (ip_hdr(skb)->protocol) { - case IPPROTO_TCP: - fund |= XCT_FUN_SIG_TCP4; - /* TCP checksum is 16 bytes into the header */ - cs_dest = map[0] + skb_transport_offset(skb) + 16; - break; - case IPPROTO_UDP: - fund |= XCT_FUN_SIG_UDP4; - /* UDP checksum is 6 bytes into the header */ - cs_dest = map[0] + skb_transport_offset(skb) + 6; - break; - default: - BUG(); - } - - /* Do the checksum offloaded */ - fill = csring->next_to_fill; - hdr = fill; - - CS_DESC(csring, fill++) = fund; - /* Room for 8BRES. Checksum result is really 2 bytes into it */ - csdma = csring->chan.ring_dma + (fill & (CS_RING_SIZE-1)) * 8 + 2; - CS_DESC(csring, fill++) = 0; - - CS_DESC(csring, fill) = XCT_PTR_LEN(map_size[0]-nh_off) | XCT_PTR_ADDR(map[0]+nh_off); - for (i = 1; i <= nfrags; i++) - CS_DESC(csring, fill+i) = XCT_PTR_LEN(map_size[i]) | XCT_PTR_ADDR(map[i]); - - fill += i; - if (fill & 1) - fill++; - - /* Copy the result into the TCP packet */ - cpyhdr = fill; - CS_DESC(csring, fill++) = XCT_FUN_O | XCT_FUN_FUN(csring->fun) | - XCT_FUN_LLEN(2) | XCT_FUN_SE; - CS_DESC(csring, fill++) = XCT_PTR_LEN(2) | XCT_PTR_ADDR(cs_dest) | XCT_PTR_T; - CS_DESC(csring, fill++) = XCT_PTR_LEN(2) | XCT_PTR_ADDR(csdma); - fill++; - - evt = !csring->last_event; - csring->last_event = evt; - - /* Event handshaking with MAC TX */ - CS_DESC(csring, fill++) = CTRL_CMD_T | CTRL_CMD_META_EVT | CTRL_CMD_O | - CTRL_CMD_ETYPE_SET | CTRL_CMD_REG(csring->events[evt]); - CS_DESC(csring, fill++) = 0; - CS_DESC(csring, fill++) = CTRL_CMD_T | CTRL_CMD_META_EVT | CTRL_CMD_O | - CTRL_CMD_ETYPE_WCLR | CTRL_CMD_REG(csring->events[!evt]); - CS_DESC(csring, fill++) = 0; - csring->next_to_fill = fill & (CS_RING_SIZE-1); - - cs_size = fill - hdr; - write_dma_reg(PAS_DMA_TXCHAN_INCR(csring->chan.chno), (cs_size) >> 1); - - /* TX-side event handshaking */ - fill = txring->next_to_fill; - TX_DESC(txring, fill++) = CTRL_CMD_T | CTRL_CMD_META_EVT | CTRL_CMD_O | - CTRL_CMD_ETYPE_WSET | CTRL_CMD_REG(csring->events[evt]); - TX_DESC(txring, fill++) = 0; - TX_DESC(txring, fill++) = CTRL_CMD_T | CTRL_CMD_META_EVT | CTRL_CMD_O | - CTRL_CMD_ETYPE_CLR | CTRL_CMD_REG(csring->events[!evt]); - TX_DESC(txring, fill++) = 0; - txring->next_to_fill = fill; - - write_dma_reg(PAS_DMA_TXCHAN_INCR(txring->chan.chno), 2); -} - -static int pasemi_mac_start_tx(struct sk_buff *skb, struct net_device *dev) -{ - struct pasemi_mac * const mac = netdev_priv(dev); - struct pasemi_mac_txring * const txring = tx_ring(mac); - struct pasemi_mac_csring *csring; - u64 dflags = 0; - u64 mactx; - dma_addr_t map[MAX_SKB_FRAGS+1]; - unsigned int map_size[MAX_SKB_FRAGS+1]; - unsigned long flags; - int i, nfrags; - int fill; - const int nh_off = skb_network_offset(skb); - const int nh_len = skb_network_header_len(skb); - - prefetch(&txring->ring_info); - - dflags = XCT_MACTX_O | XCT_MACTX_ST | XCT_MACTX_CRC_PAD; - - 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 (pci_dma_mapping_error(mac->dma_pdev, 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 (pci_dma_mapping_error(mac->dma_pdev, map[i+1])) { - nfrags = i; - goto out_err_nolock; - } - } - - if (skb->ip_summed == CHECKSUM_PARTIAL && skb->len <= 1540) { - switch (ip_hdr(skb)->protocol) { - case IPPROTO_TCP: - dflags |= XCT_MACTX_CSUM_TCP; - dflags |= XCT_MACTX_IPH(nh_len >> 2); - dflags |= XCT_MACTX_IPO(nh_off); - break; - case IPPROTO_UDP: - dflags |= XCT_MACTX_CSUM_UDP; - dflags |= XCT_MACTX_IPH(nh_len >> 2); - dflags |= XCT_MACTX_IPO(nh_off); - break; - default: - WARN_ON(1); - } - } - - mactx = dflags | XCT_MACTX_LLEN(skb->len); - - 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 + 14) { - /* no room -- stop the queue and wait for tx intr */ - netif_stop_queue(dev); - goto out_err; - } - - /* Queue up checksum + event descriptors, if needed */ - if (mac->num_cs && skb->ip_summed == CHECKSUM_PARTIAL && skb->len > 1540) { - csring = mac->cs[mac->last_cs]; - mac->last_cs = (mac->last_cs + 1) % mac->num_cs; - - pasemi_mac_queue_csdesc(skb, map, map_size, txring, csring); - } - - fill = txring->next_to_fill; - TX_DESC(txring, fill) = mactx; - TX_DESC_INFO(txring, fill).dma = nfrags; - fill++; - TX_DESC_INFO(txring, fill).skb = skb; - for (i = 0; i <= nfrags; i++) { - TX_DESC(txring, fill+i) = - XCT_PTR_LEN(map_size[i]) | XCT_PTR_ADDR(map[i]); - TX_DESC_INFO(txring, 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 = (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(PAS_DMA_TXCHAN_INCR(txring->chan.chno), (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) -{ - const 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); - int pkts; - - pasemi_mac_clean_tx(tx_ring(mac)); - pkts = pasemi_mac_clean_rx(rx_ring(mac), budget); - if (pkts < budget) { - /* all done, no more packets present */ - napi_complete(napi); - - pasemi_mac_restart_rx_intr(mac); - pasemi_mac_restart_tx_intr(mac); - } - return pkts; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -/* - * Polling 'interrupt' - used by things like netconsole to send skbs - * without having to re-enable interrupts. It's not called while - * the interrupt routine is executing. - */ -static void pasemi_mac_netpoll(struct net_device *dev) -{ - const struct pasemi_mac *mac = netdev_priv(dev); - - disable_irq(mac->tx->chan.irq); - pasemi_mac_tx_intr(mac->tx->chan.irq, mac->tx); - enable_irq(mac->tx->chan.irq); - - disable_irq(mac->rx->chan.irq); - pasemi_mac_rx_intr(mac->rx->chan.irq, mac->rx); - enable_irq(mac->rx->chan.irq); -} -#endif - -static int pasemi_mac_change_mtu(struct net_device *dev, int new_mtu) -{ - struct pasemi_mac *mac = netdev_priv(dev); - unsigned int reg; - unsigned int rcmdsta = 0; - int running; - int ret = 0; - - if (new_mtu < PE_MIN_MTU || new_mtu > PE_MAX_MTU) - return -EINVAL; - - running = netif_running(dev); - - if (running) { - /* Need to stop the interface, clean out all already - * received buffers, free all unused buffers on the RX - * interface ring, then finally re-fill the rx ring with - * the new-size buffers and restart. - */ - - napi_disable(&mac->napi); - netif_tx_disable(dev); - pasemi_mac_intf_disable(mac); - - rcmdsta = read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if)); - pasemi_mac_pause_rxint(mac); - pasemi_mac_clean_rx(rx_ring(mac), RX_RING_SIZE); - pasemi_mac_free_rx_buffers(mac); - - } - - /* Setup checksum channels if large MTU and none already allocated */ - if (new_mtu > 1500 && !mac->num_cs) { - pasemi_mac_setup_csrings(mac); - if (!mac->num_cs) { - ret = -ENOMEM; - goto out; - } - } - - /* Change maxf, i.e. what size frames are accepted. - * Need room for ethernet header and CRC word - */ - reg = read_mac_reg(mac, PAS_MAC_CFG_MACCFG); - reg &= ~PAS_MAC_CFG_MACCFG_MAXF_M; - reg |= PAS_MAC_CFG_MACCFG_MAXF(new_mtu + ETH_HLEN + 4); - write_mac_reg(mac, PAS_MAC_CFG_MACCFG, reg); - - dev->mtu = new_mtu; - /* MTU + ETH_HLEN + VLAN_HLEN + 2 64B cachelines */ - mac->bufsz = new_mtu + ETH_HLEN + ETH_FCS_LEN + LOCAL_SKB_ALIGN + 128; - -out: - if (running) { - write_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if), - rcmdsta | PAS_DMA_RXINT_RCMDSTA_EN); - - rx_ring(mac)->next_to_fill = 0; - pasemi_mac_replenish_rx_ring(dev, RX_RING_SIZE-1); - - napi_enable(&mac->napi); - netif_start_queue(dev); - pasemi_mac_intf_enable(mac); - } - - return ret; -} - -static const struct net_device_ops pasemi_netdev_ops = { - .ndo_open = pasemi_mac_open, - .ndo_stop = pasemi_mac_close, - .ndo_start_xmit = pasemi_mac_start_tx, - .ndo_set_multicast_list = pasemi_mac_set_rx_mode, - .ndo_set_mac_address = pasemi_mac_set_mac_addr, - .ndo_change_mtu = pasemi_mac_change_mtu, - .ndo_validate_addr = eth_validate_addr, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = pasemi_mac_netpoll, -#endif -}; - -static int __devinit -pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent) -{ - struct net_device *dev; - struct pasemi_mac *mac; - int err, ret; - - 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_IP_CSUM | NETIF_F_LLTX | NETIF_F_SG | - NETIF_F_HIGHDMA | NETIF_F_GSO; - - mac->lro_mgr.max_aggr = LRO_MAX_AGGR; - mac->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS; - mac->lro_mgr.lro_arr = mac->lro_desc; - mac->lro_mgr.get_skb_header = get_skb_hdr; - mac->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID; - mac->lro_mgr.dev = mac->netdev; - mac->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; - mac->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; - - - 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"); - err = -ENODEV; - goto out; - } - - 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"); - 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)); - - ret = mac_to_intf(mac); - if (ret < 0) { - dev_err(&mac->pdev->dev, "Can't map DMA interface\n"); - err = -ENODEV; - goto out; - } - mac->dma_if = ret; - - switch (pdev->device) { - case 0xa005: - mac->type = MAC_TYPE_GMAC; - break; - case 0xa006: - mac->type = MAC_TYPE_XAUI; - break; - default: - err = -ENODEV; - goto out; - } - - dev->netdev_ops = &pasemi_netdev_ops; - dev->mtu = PE_DEF_MTU; - /* 1500 MTU + ETH_HLEN + VLAN_HLEN + 2 64B cachelines */ - mac->bufsz = dev->mtu + ETH_HLEN + ETH_FCS_LEN + LOCAL_SKB_ALIGN + 128; - - dev->ethtool_ops = &pasemi_mac_ethtool_ops; - - if (err) - goto out; - - 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, hw addr %pM\n", - dev->name, mac->type == MAC_TYPE_GMAC ? "GMAC" : "XAUI", - mac->dma_if, 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); - - 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); - - pasemi_dma_free_chan(&mac->tx->chan); - pasemi_dma_free_chan(&mac->rx->chan); - - pci_set_drvdata(pdev, NULL); - free_netdev(netdev); -} - -static DEFINE_PCI_DEVICE_TABLE(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); -} - -int pasemi_mac_init_module(void) -{ - int err; - - err = pasemi_dma_init(); - if (err) - return err; - - return pci_register_driver(&pasemi_mac_driver); -} - -module_init(pasemi_mac_init_module); -module_exit(pasemi_mac_cleanup_module); diff --git a/drivers/net/pasemi_mac.h b/drivers/net/pasemi_mac.h deleted file mode 100644 index e2f4efa..0000000 --- a/drivers/net/pasemi_mac.h +++ /dev/null @@ -1,216 +0,0 @@ -/* - * Copyright (C) 2006 PA Semi, Inc - * - * Driver for the PA6T-1682M onchip 1G/10G Ethernet MACs, soft state and - * hardware register layouts. - * - * 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 - */ - -#ifndef PASEMI_MAC_H -#define PASEMI_MAC_H - -#include -#include -#include -#include - -/* Must be a power of two */ -#define RX_RING_SIZE 2048 -#define TX_RING_SIZE 4096 -#define CS_RING_SIZE (TX_RING_SIZE*2) - - -#define MAX_LRO_DESCRIPTORS 8 -#define MAX_CS 2 - -struct pasemi_mac_txring { - struct pasemi_dmachan chan; /* Must be first */ - spinlock_t lock; - unsigned int size; - unsigned int next_to_fill; - unsigned int next_to_clean; - struct pasemi_mac_buffer *ring_info; - struct pasemi_mac *mac; /* Needed in intr handler */ - struct timer_list clean_timer; -}; - -struct pasemi_mac_rxring { - struct pasemi_dmachan chan; /* Must be first */ - spinlock_t lock; - u64 *buffers; /* RX interface buffer ring */ - dma_addr_t buf_dma; - unsigned int size; - unsigned int next_to_fill; - unsigned int next_to_clean; - struct pasemi_mac_buffer *ring_info; - struct pasemi_mac *mac; /* Needed in intr handler */ -}; - -struct pasemi_mac_csring { - struct pasemi_dmachan chan; - unsigned int size; - unsigned int next_to_fill; - int events[2]; - int last_event; - int fun; -}; - -struct pasemi_mac { - struct net_device *netdev; - struct pci_dev *pdev; - struct pci_dev *dma_pdev; - struct pci_dev *iob_pdev; - struct phy_device *phydev; - struct napi_struct napi; - - int bufsz; /* RX ring buffer size */ - int last_cs; - int num_cs; - u32 dma_if; - u8 type; -#define MAC_TYPE_GMAC 1 -#define MAC_TYPE_XAUI 2 - - u8 mac_addr[6]; - - struct net_lro_mgr lro_mgr; - struct net_lro_desc lro_desc[MAX_LRO_DESCRIPTORS]; - struct timer_list rxtimer; - unsigned int lro_max_aggr; - - struct pasemi_mac_txring *tx; - struct pasemi_mac_rxring *rx; - struct pasemi_mac_csring *cs[MAX_CS]; - char tx_irq_name[10]; /* "eth%d tx" */ - char rx_irq_name[10]; /* "eth%d rx" */ - int link; - int speed; - int duplex; - - unsigned int msg_enable; -}; - -/* Software status descriptor (ring_info) */ -struct pasemi_mac_buffer { - struct sk_buff *skb; - dma_addr_t dma; -}; - -#define TX_DESC(tx, num) ((tx)->chan.ring_virt[(num) & (TX_RING_SIZE-1)]) -#define TX_DESC_INFO(tx, num) ((tx)->ring_info[(num) & (TX_RING_SIZE-1)]) -#define RX_DESC(rx, num) ((rx)->chan.ring_virt[(num) & (RX_RING_SIZE-1)]) -#define RX_DESC_INFO(rx, num) ((rx)->ring_info[(num) & (RX_RING_SIZE-1)]) -#define RX_BUFF(rx, num) ((rx)->buffers[(num) & (RX_RING_SIZE-1)]) -#define CS_DESC(cs, num) ((cs)->chan.ring_virt[(num) & (CS_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)) - -/* PCI register offsets and formats */ - - -/* MAC CFG register offsets */ -enum { - PAS_MAC_CFG_PCFG = 0x80, - PAS_MAC_CFG_MACCFG = 0x84, - PAS_MAC_CFG_ADR0 = 0x8c, - PAS_MAC_CFG_ADR1 = 0x90, - PAS_MAC_CFG_TXP = 0x98, - PAS_MAC_CFG_RMON = 0x100, - PAS_MAC_IPC_CHNL = 0x208, -}; - -/* MAC CFG register fields */ -#define PAS_MAC_CFG_PCFG_PE 0x80000000 -#define PAS_MAC_CFG_PCFG_CE 0x40000000 -#define PAS_MAC_CFG_PCFG_BU 0x20000000 -#define PAS_MAC_CFG_PCFG_TT 0x10000000 -#define PAS_MAC_CFG_PCFG_TSR_M 0x0c000000 -#define PAS_MAC_CFG_PCFG_TSR_10M 0x00000000 -#define PAS_MAC_CFG_PCFG_TSR_100M 0x04000000 -#define PAS_MAC_CFG_PCFG_TSR_1G 0x08000000 -#define PAS_MAC_CFG_PCFG_TSR_10G 0x0c000000 -#define PAS_MAC_CFG_PCFG_T24 0x02000000 -#define PAS_MAC_CFG_PCFG_PR 0x01000000 -#define PAS_MAC_CFG_PCFG_CRO_M 0x00ff0000 -#define PAS_MAC_CFG_PCFG_CRO_S 16 -#define PAS_MAC_CFG_PCFG_IPO_M 0x0000ff00 -#define PAS_MAC_CFG_PCFG_IPO_S 8 -#define PAS_MAC_CFG_PCFG_S1 0x00000080 -#define PAS_MAC_CFG_PCFG_IO_M 0x00000060 -#define PAS_MAC_CFG_PCFG_IO_MAC 0x00000000 -#define PAS_MAC_CFG_PCFG_IO_OFF 0x00000020 -#define PAS_MAC_CFG_PCFG_IO_IND_ETH 0x00000040 -#define PAS_MAC_CFG_PCFG_IO_IND_IP 0x00000060 -#define PAS_MAC_CFG_PCFG_LP 0x00000010 -#define PAS_MAC_CFG_PCFG_TS 0x00000008 -#define PAS_MAC_CFG_PCFG_HD 0x00000004 -#define PAS_MAC_CFG_PCFG_SPD_M 0x00000003 -#define PAS_MAC_CFG_PCFG_SPD_10M 0x00000000 -#define PAS_MAC_CFG_PCFG_SPD_100M 0x00000001 -#define PAS_MAC_CFG_PCFG_SPD_1G 0x00000002 -#define PAS_MAC_CFG_PCFG_SPD_10G 0x00000003 - -#define PAS_MAC_CFG_MACCFG_TXT_M 0x70000000 -#define PAS_MAC_CFG_MACCFG_TXT_S 28 -#define PAS_MAC_CFG_MACCFG_PRES_M 0x0f000000 -#define PAS_MAC_CFG_MACCFG_PRES_S 24 -#define PAS_MAC_CFG_MACCFG_MAXF_M 0x00ffff00 -#define PAS_MAC_CFG_MACCFG_MAXF_S 8 -#define PAS_MAC_CFG_MACCFG_MAXF(x) (((x) << PAS_MAC_CFG_MACCFG_MAXF_S) & \ - PAS_MAC_CFG_MACCFG_MAXF_M) -#define PAS_MAC_CFG_MACCFG_MINF_M 0x000000ff -#define PAS_MAC_CFG_MACCFG_MINF_S 0 - -#define PAS_MAC_CFG_TXP_FCF 0x01000000 -#define PAS_MAC_CFG_TXP_FCE 0x00800000 -#define PAS_MAC_CFG_TXP_FC 0x00400000 -#define PAS_MAC_CFG_TXP_FPC_M 0x00300000 -#define PAS_MAC_CFG_TXP_FPC_S 20 -#define PAS_MAC_CFG_TXP_FPC(x) (((x) << PAS_MAC_CFG_TXP_FPC_S) & \ - PAS_MAC_CFG_TXP_FPC_M) -#define PAS_MAC_CFG_TXP_RT 0x00080000 -#define PAS_MAC_CFG_TXP_BL 0x00040000 -#define PAS_MAC_CFG_TXP_SL_M 0x00030000 -#define PAS_MAC_CFG_TXP_SL_S 16 -#define PAS_MAC_CFG_TXP_SL(x) (((x) << PAS_MAC_CFG_TXP_SL_S) & \ - PAS_MAC_CFG_TXP_SL_M) -#define PAS_MAC_CFG_TXP_COB_M 0x0000f000 -#define PAS_MAC_CFG_TXP_COB_S 12 -#define PAS_MAC_CFG_TXP_COB(x) (((x) << PAS_MAC_CFG_TXP_COB_S) & \ - PAS_MAC_CFG_TXP_COB_M) -#define PAS_MAC_CFG_TXP_TIFT_M 0x00000f00 -#define PAS_MAC_CFG_TXP_TIFT_S 8 -#define PAS_MAC_CFG_TXP_TIFT(x) (((x) << PAS_MAC_CFG_TXP_TIFT_S) & \ - PAS_MAC_CFG_TXP_TIFT_M) -#define PAS_MAC_CFG_TXP_TIFG_M 0x000000ff -#define PAS_MAC_CFG_TXP_TIFG_S 0 -#define PAS_MAC_CFG_TXP_TIFG(x) (((x) << PAS_MAC_CFG_TXP_TIFG_S) & \ - PAS_MAC_CFG_TXP_TIFG_M) - -#define PAS_MAC_RMON(r) (0x100+(r)*4) - -#define PAS_MAC_IPC_CHNL_DCHNO_M 0x003f0000 -#define PAS_MAC_IPC_CHNL_DCHNO_S 16 -#define PAS_MAC_IPC_CHNL_DCHNO(x) (((x) << PAS_MAC_IPC_CHNL_DCHNO_S) & \ - PAS_MAC_IPC_CHNL_DCHNO_M) -#define PAS_MAC_IPC_CHNL_BCH_M 0x0000003f -#define PAS_MAC_IPC_CHNL_BCH_S 0 -#define PAS_MAC_IPC_CHNL_BCH(x) (((x) << PAS_MAC_IPC_CHNL_BCH_S) & \ - PAS_MAC_IPC_CHNL_BCH_M) - - -#endif /* PASEMI_MAC_H */ diff --git a/drivers/net/pasemi_mac_ethtool.c b/drivers/net/pasemi_mac_ethtool.c deleted file mode 100644 index 4825959..0000000 --- a/drivers/net/pasemi_mac_ethtool.c +++ /dev/null @@ -1,160 +0,0 @@ -/* - * Copyright (C) 2006-2008 PA Semi, Inc - * - * Ethtool hooks 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 -#include -#include -#include - -#include -#include "pasemi_mac.h" - -static struct { - const char str[ETH_GSTRING_LEN]; -} ethtool_stats_keys[] = { - { "rx-drops" }, - { "rx-bytes" }, - { "rx-packets" }, - { "rx-broadcast-packets" }, - { "rx-multicast-packets" }, - { "rx-crc-errors" }, - { "rx-undersize-errors" }, - { "rx-oversize-errors" }, - { "rx-short-fragment-errors" }, - { "rx-jabber-errors" }, - { "rx-64-byte-packets" }, - { "rx-65-127-byte-packets" }, - { "rx-128-255-byte-packets" }, - { "rx-256-511-byte-packets" }, - { "rx-512-1023-byte-packets" }, - { "rx-1024-1518-byte-packets" }, - { "rx-pause-frames" }, - { "tx-bytes" }, - { "tx-packets" }, - { "tx-broadcast-packets" }, - { "tx-multicast-packets" }, - { "tx-collisions" }, - { "tx-late-collisions" }, - { "tx-excessive-collisions" }, - { "tx-crc-errors" }, - { "tx-undersize-errors" }, - { "tx-oversize-errors" }, - { "tx-64-byte-packets" }, - { "tx-65-127-byte-packets" }, - { "tx-128-255-byte-packets" }, - { "tx-256-511-byte-packets" }, - { "tx-512-1023-byte-packets" }, - { "tx-1024-1518-byte-packets" }, -}; - -static int -pasemi_mac_ethtool_get_settings(struct net_device *netdev, - struct ethtool_cmd *cmd) -{ - struct pasemi_mac *mac = netdev_priv(netdev); - struct phy_device *phydev = mac->phydev; - - if (!phydev) - return -EOPNOTSUPP; - - return phy_ethtool_gset(phydev, cmd); -} - -static int -pasemi_mac_ethtool_set_settings(struct net_device *netdev, - struct ethtool_cmd *cmd) -{ - struct pasemi_mac *mac = netdev_priv(netdev); - struct phy_device *phydev = mac->phydev; - - if (!phydev) - return -EOPNOTSUPP; - - return phy_ethtool_sset(phydev, cmd); -} - -static u32 -pasemi_mac_ethtool_get_msglevel(struct net_device *netdev) -{ - struct pasemi_mac *mac = netdev_priv(netdev); - return mac->msg_enable; -} - -static void -pasemi_mac_ethtool_set_msglevel(struct net_device *netdev, - u32 level) -{ - struct pasemi_mac *mac = netdev_priv(netdev); - mac->msg_enable = level; -} - - -static void -pasemi_mac_ethtool_get_ringparam(struct net_device *netdev, - struct ethtool_ringparam *ering) -{ - struct pasemi_mac *mac = netdev_priv(netdev); - - ering->tx_max_pending = TX_RING_SIZE/2; - ering->tx_pending = RING_USED(mac->tx)/2; - ering->rx_max_pending = RX_RING_SIZE/4; - ering->rx_pending = RING_USED(mac->rx)/4; -} - -static int pasemi_mac_get_sset_count(struct net_device *netdev, int sset) -{ - switch (sset) { - case ETH_SS_STATS: - return ARRAY_SIZE(ethtool_stats_keys); - default: - return -EOPNOTSUPP; - } -} - -static void pasemi_mac_get_ethtool_stats(struct net_device *netdev, - struct ethtool_stats *stats, u64 *data) -{ - struct pasemi_mac *mac = netdev_priv(netdev); - int i; - - data[0] = pasemi_read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if)) - >> PAS_DMA_RXINT_RCMDSTA_DROPS_S; - for (i = 0; i < 32; i++) - data[1+i] = pasemi_read_mac_reg(mac->dma_if, PAS_MAC_RMON(i)); -} - -static void pasemi_mac_get_strings(struct net_device *netdev, u32 stringset, - u8 *data) -{ - memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys)); -} - -const struct ethtool_ops pasemi_mac_ethtool_ops = { - .get_settings = pasemi_mac_ethtool_get_settings, - .set_settings = pasemi_mac_ethtool_set_settings, - .get_msglevel = pasemi_mac_ethtool_get_msglevel, - .set_msglevel = pasemi_mac_ethtool_set_msglevel, - .get_link = ethtool_op_get_link, - .get_ringparam = pasemi_mac_ethtool_get_ringparam, - .get_strings = pasemi_mac_get_strings, - .get_sset_count = pasemi_mac_get_sset_count, - .get_ethtool_stats = pasemi_mac_get_ethtool_stats, -}; - -- cgit v0.10.2