M: Olof Johansson <olof@lixom.net>
L: netdev@vger.kernel.org
S: Maintained
-F: drivers/net/pasemi_mac.*
+F: drivers/net/ethernet/pasemi/*
PA SEMI SMBUS DRIVER
M: Olof Johansson <olof@lixom.net>
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
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-$(CONFIG_GRETH) += greth.o
source "drivers/net/ethernet/i825xx/Kconfig"
source "drivers/net/ethernet/mellanox/Kconfig"
source "drivers/net/ethernet/myricom/Kconfig"
+source "drivers/net/ethernet/pasemi/Kconfig"
source "drivers/net/ethernet/qlogic/Kconfig"
source "drivers/net/ethernet/racal/Kconfig"
source "drivers/net/ethernet/sfc/Kconfig"
obj-$(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/
--- /dev/null
+#
+# 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
+ <http://www.tldp.org/docs.html#howto>.
+
+ 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
--- /dev/null
+#
+# Makefile for the A Semi network device drivers.
+#
+
+obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o pasemi_mac_ethtool.o
--- /dev/null
+/*
+ * Copyright (C) 2006-2007 PA Semi, Inc
+ *
+ * Driver for the PA Semi PWRficient onchip 1G/10G Ethernet MACs
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/dmaengine.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/of_mdio.h>
+#include <linux/etherdevice.h>
+#include <asm/dma-mapping.h>
+#include <linux/in.h>
+#include <linux/skbuff.h>
+
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <net/checksum.h>
+#include <linux/inet_lro.h>
+#include <linux/prefetch.h>
+
+#include <asm/irq.h>
+#include <asm/firmware.h>
+#include <asm/pasemi_dma.h>
+
+#include "pasemi_mac.h"
+
+/* We have our own align, since ppc64 in general has it at 0 because
+ * of design flaws in some of the server bridge chips. However, for
+ * PWRficient doing the unaligned copies is more expensive than doing
+ * unaligned DMA, so make sure the data is aligned instead.
+ */
+#define LOCAL_SKB_ALIGN 2
+
+/* TODO list
+ *
+ * - Multicast support
+ * - Large MTU support
+ * - SW LRO
+ * - Multiqueue RX/TX
+ */
+
+#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 <olof@lixom.net>");
+MODULE_DESCRIPTION("PA Semi PWRficient Ethernet driver");
+
+static int debug = -1; /* -1 == use DEFAULT_MSG_ENABLE as value */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "PA Semi MAC bitmapped debugging message enable value");
+
+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);
--- /dev/null
+/*
+ * 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 <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <linux/phy.h>
+
+/* 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 */
--- /dev/null
+/*
+ * 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 <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/pci.h>
+#include <linux/inet_lro.h>
+
+#include <asm/pasemi_dma.h>
+#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,
+};
+
+++ /dev/null
-/*
- * Copyright (C) 2006-2007 PA Semi, Inc
- *
- * Driver for the PA Semi PWRficient onchip 1G/10G Ethernet MACs
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/dmaengine.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/of_mdio.h>
-#include <linux/etherdevice.h>
-#include <asm/dma-mapping.h>
-#include <linux/in.h>
-#include <linux/skbuff.h>
-
-#include <linux/ip.h>
-#include <linux/tcp.h>
-#include <net/checksum.h>
-#include <linux/inet_lro.h>
-#include <linux/prefetch.h>
-
-#include <asm/irq.h>
-#include <asm/firmware.h>
-#include <asm/pasemi_dma.h>
-
-#include "pasemi_mac.h"
-
-/* We have our own align, since ppc64 in general has it at 0 because
- * of design flaws in some of the server bridge chips. However, for
- * PWRficient doing the unaligned copies is more expensive than doing
- * unaligned DMA, so make sure the data is aligned instead.
- */
-#define LOCAL_SKB_ALIGN 2
-
-/* TODO list
- *
- * - Multicast support
- * - Large MTU support
- * - SW LRO
- * - Multiqueue RX/TX
- */
-
-#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 <olof@lixom.net>");
-MODULE_DESCRIPTION("PA Semi PWRficient Ethernet driver");
-
-static int debug = -1; /* -1 == use DEFAULT_MSG_ENABLE as value */
-module_param(debug, int, 0);
-MODULE_PARM_DESC(debug, "PA Semi MAC bitmapped debugging message enable value");
-
-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);
+++ /dev/null
-/*
- * 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 <linux/ethtool.h>
-#include <linux/netdevice.h>
-#include <linux/spinlock.h>
-#include <linux/phy.h>
-
-/* 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 */
+++ /dev/null
-/*
- * 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 <linux/netdevice.h>
-#include <linux/ethtool.h>
-#include <linux/pci.h>
-#include <linux/inet_lro.h>
-
-#include <asm/pasemi_dma.h>
-#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,
-};
-
projects / firefly-linux-kernel-4.4.55.git / commitdiff