/*
- * $Id$
- *
* Copyright (C) 2006, 2007 OpenWrt.org
- *
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include <linux/moduleparam.h>
#include <linux/sched.h>
-#include <linux/kernel.h> /* printk() */
+#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/mii.h>
#include <linux/phy.h>
#include <linux/platform_device.h>
-#include <asm/ar7/ar7.h>
-#include <gpio.h>
+#include <linux/dma-mapping.h>
+#include <asm/gpio.h>
MODULE_AUTHOR("Eugene Konev");
MODULE_DESCRIPTION("TI AR7 ethernet driver (CPMAC)");
MODULE_LICENSE("GPL");
-static int rx_ring_size = 64;
-static int disable_napi = 0;
-module_param(rx_ring_size, int, 64);
-module_param(disable_napi, int, 0);
-MODULE_PARM_DESC(rx_ring_size, "Size of rx ring (in skbs)");
+static int disable_napi;
+static int debug_level = 8;
+static int dumb_switch;
+
+module_param(disable_napi, int, 0644);
+/* Next 2 are only used in cpmac_probe, so it's pointless to change them */
+module_param(debug_level, int, 0444);
+module_param(dumb_switch, int, 0444);
+
MODULE_PARM_DESC(disable_napi, "Disable NAPI polling");
+MODULE_PARM_DESC(debug_level, "Number of NETIF_MSG bits to enable");
+MODULE_PARM_DESC(dumb_switch, "Assume switch is not connected to MDIO bus");
+
+/* stolen from net/ieee80211.h */
+#ifndef MAC_FMT
+#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
+#define MAC_ARG(x) ((u8*)(x))[0], ((u8*)(x))[1], ((u8*)(x))[2], \
+ ((u8*)(x))[3], ((u8*)(x))[4], ((u8*)(x))[5]
+#endif
+/* frame size + 802.1q tag */
+#define CPMAC_SKB_SIZE (ETH_FRAME_LEN + 4)
+#define CPMAC_TX_RING_SIZE 8
+
+/* Ethernet registers */
+#define CPMAC_TX_CONTROL 0x0004
+#define CPMAC_TX_TEARDOWN 0x0008
+#define CPMAC_RX_CONTROL 0x0014
+#define CPMAC_RX_TEARDOWN 0x0018
+#define CPMAC_MBP 0x0100
+# define MBP_RXPASSCRC 0x40000000
+# define MBP_RXQOS 0x20000000
+# define MBP_RXNOCHAIN 0x10000000
+# define MBP_RXCMF 0x01000000
+# define MBP_RXSHORT 0x00800000
+# define MBP_RXCEF 0x00400000
+# define MBP_RXPROMISC 0x00200000
+# define MBP_PROMISCCHAN(channel) (((channel) & 0x7) << 16)
+# define MBP_RXBCAST 0x00002000
+# define MBP_BCASTCHAN(channel) (((channel) & 0x7) << 8)
+# define MBP_RXMCAST 0x00000020
+# define MBP_MCASTCHAN(channel) ((channel) & 0x7)
+#define CPMAC_UNICAST_ENABLE 0x0104
+#define CPMAC_UNICAST_CLEAR 0x0108
+#define CPMAC_MAX_LENGTH 0x010c
+#define CPMAC_BUFFER_OFFSET 0x0110
+#define CPMAC_MAC_CONTROL 0x0160
+# define MAC_TXPTYPE 0x00000200
+# define MAC_TXPACE 0x00000040
+# define MAC_MII 0x00000020
+# define MAC_TXFLOW 0x00000010
+# define MAC_RXFLOW 0x00000008
+# define MAC_MTEST 0x00000004
+# define MAC_LOOPBACK 0x00000002
+# define MAC_FDX 0x00000001
+#define CPMAC_MAC_STATUS 0x0164
+# define MAC_STATUS_QOS 0x00000004
+# define MAC_STATUS_RXFLOW 0x00000002
+# define MAC_STATUS_TXFLOW 0x00000001
+#define CPMAC_TX_INT_ENABLE 0x0178
+#define CPMAC_TX_INT_CLEAR 0x017c
+#define CPMAC_MAC_INT_VECTOR 0x0180
+# define MAC_INT_STATUS 0x00080000
+# define MAC_INT_HOST 0x00040000
+# define MAC_INT_RX 0x00020000
+# define MAC_INT_TX 0x00010000
+#define CPMAC_MAC_EOI_VECTOR 0x0184
+#define CPMAC_RX_INT_ENABLE 0x0198
+#define CPMAC_RX_INT_CLEAR 0x019c
+#define CPMAC_MAC_INT_ENABLE 0x01a8
+#define CPMAC_MAC_INT_CLEAR 0x01ac
+#define CPMAC_MAC_ADDR_LO(channel) (0x01b0 + (channel) * 4)
+#define CPMAC_MAC_ADDR_MID 0x01d0
+#define CPMAC_MAC_ADDR_HI 0x01d4
+#define CPMAC_MAC_HASH_LO 0x01d8
+#define CPMAC_MAC_HASH_HI 0x01dc
+#define CPMAC_TX_PTR(channel) (0x0600 + (channel) * 4)
+#define CPMAC_RX_PTR(channel) (0x0620 + (channel) * 4)
+#define CPMAC_TX_ACK(channel) (0x0640 + (channel) * 4)
+#define CPMAC_RX_ACK(channel) (0x0660 + (channel) * 4)
+#define CPMAC_REG_END 0x0680
+/*
+ * Rx/Tx statistics
+ * TODO: use some of them to fill stats in cpmac_stats()
+ */
+#define CPMAC_STATS_RX_GOOD 0x0200
+#define CPMAC_STATS_RX_BCAST 0x0204
+#define CPMAC_STATS_RX_MCAST 0x0208
+#define CPMAC_STATS_RX_PAUSE 0x020c
+#define CPMAC_STATS_RX_CRC 0x0210
+#define CPMAC_STATS_RX_ALIGN 0x0214
+#define CPMAC_STATS_RX_OVER 0x0218
+#define CPMAC_STATS_RX_JABBER 0x021c
+#define CPMAC_STATS_RX_UNDER 0x0220
+#define CPMAC_STATS_RX_FRAG 0x0224
+#define CPMAC_STATS_RX_FILTER 0x0228
+#define CPMAC_STATS_RX_QOSFILTER 0x022c
+#define CPMAC_STATS_RX_OCTETS 0x0230
+
+#define CPMAC_STATS_TX_GOOD 0x0234
+#define CPMAC_STATS_TX_BCAST 0x0238
+#define CPMAC_STATS_TX_MCAST 0x023c
+#define CPMAC_STATS_TX_PAUSE 0x0240
+#define CPMAC_STATS_TX_DEFER 0x0244
+#define CPMAC_STATS_TX_COLLISION 0x0248
+#define CPMAC_STATS_TX_SINGLECOLL 0x024c
+#define CPMAC_STATS_TX_MULTICOLL 0x0250
+#define CPMAC_STATS_TX_EXCESSCOLL 0x0254
+#define CPMAC_STATS_TX_LATECOLL 0x0258
+#define CPMAC_STATS_TX_UNDERRUN 0x025c
+#define CPMAC_STATS_TX_CARRIERSENSE 0x0260
+#define CPMAC_STATS_TX_OCTETS 0x0264
+
+#define cpmac_read(base, reg) (readl((void __iomem *)(base) + (reg)))
+#define cpmac_write(base, reg, val) (writel(val, (void __iomem *)(base) + \
+ (reg)))
+
+/* MDIO bus */
+#define CPMAC_MDIO_VERSION 0x0000
+#define CPMAC_MDIO_CONTROL 0x0004
+# define MDIOC_IDLE 0x80000000
+# define MDIOC_ENABLE 0x40000000
+# define MDIOC_PREAMBLE 0x00100000
+# define MDIOC_FAULT 0x00080000
+# define MDIOC_FAULTDETECT 0x00040000
+# define MDIOC_INTTEST 0x00020000
+# define MDIOC_CLKDIV(div) ((div) & 0xff)
+#define CPMAC_MDIO_ALIVE 0x0008
+#define CPMAC_MDIO_LINK 0x000c
+#define CPMAC_MDIO_ACCESS(channel) (0x0080 + (channel) * 8)
+# define MDIO_BUSY 0x80000000
+# define MDIO_WRITE 0x40000000
+# define MDIO_REG(reg) (((reg) & 0x1f) << 21)
+# define MDIO_PHY(phy) (((phy) & 0x1f) << 16)
+# define MDIO_DATA(data) ((data) & 0xffff)
+#define CPMAC_MDIO_PHYSEL(channel) (0x0084 + (channel) * 8)
+# define PHYSEL_LINKSEL 0x00000040
+# define PHYSEL_LINKINT 0x00000020
-/* Register definitions */
-struct cpmac_control_regs {
- volatile u32 revision;
- volatile u32 control;
- volatile u32 teardown;
- volatile u32 unused;
-} __attribute__ ((packed));
-
-struct cpmac_int_regs {
- volatile u32 stat_raw;
- volatile u32 stat_masked;
- volatile u32 enable;
- volatile u32 clear;
-} __attribute__ ((packed));
-
-struct cpmac_stats {
- volatile u32 good;
- volatile u32 bcast;
- volatile u32 mcast;
- volatile u32 pause;
- volatile u32 crc_error;
- volatile u32 align_error;
- volatile u32 oversized;
- volatile u32 jabber;
- volatile u32 undersized;
- volatile u32 fragment;
- volatile u32 filtered;
- volatile u32 qos_filtered;
- volatile u32 octets;
-} __attribute__ ((packed));
-
-struct cpmac_regs {
- struct cpmac_control_regs tx_ctrl;
- struct cpmac_control_regs rx_ctrl;
- volatile u32 unused1[56];
- volatile u32 mbp;
-/* MBP bits */
-#define MBP_RXPASSCRC 0x40000000
-#define MBP_RXQOS 0x20000000
-#define MBP_RXNOCHAIN 0x10000000
-#define MBP_RXCMF 0x01000000
-#define MBP_RXSHORT 0x00800000
-#define MBP_RXCEF 0x00400000
-#define MBP_RXPROMISC 0x00200000
-#define MBP_PROMISCCHAN(chan) (((chan) & 0x7) << 16)
-#define MBP_RXBCAST 0x00002000
-#define MBP_BCASTCHAN(chan) (((chan) & 0x7) << 8)
-#define MBP_RXMCAST 0x00000020
-#define MBP_MCASTCHAN(chan) ((chan) & 0x7)
- volatile u32 unicast_enable;
- volatile u32 unicast_clear;
- volatile u32 max_len;
- volatile u32 buffer_offset;
- volatile u32 filter_flow_threshold;
- volatile u32 unused2[2];
- volatile u32 flow_thre[8];
- volatile u32 free_buffer[8];
- volatile u32 mac_control;
-#define MAC_TXPTYPE 0x00000200
-#define MAC_TXPACE 0x00000040
-#define MAC_MII 0x00000020
-#define MAC_TXFLOW 0x00000010
-#define MAC_RXFLOW 0x00000008
-#define MAC_MTEST 0x00000004
-#define MAC_LOOPBACK 0x00000002
-#define MAC_FDX 0x00000001
- volatile u32 mac_status;
-#define MACST_QOS 0x4
-#define MACST_RXFLOW 0x2
-#define MACST_TXFLOW 0x1
- volatile u32 emc_control;
- volatile u32 unused3;
- struct cpmac_int_regs tx_int;
- volatile u32 mac_int_vector;
-/* Int Status bits */
-#define INTST_STATUS 0x80000
-#define INTST_HOST 0x40000
-#define INTST_RX 0x20000
-#define INTST_TX 0x10000
- volatile u32 mac_eoi_vector;
- volatile u32 unused4[2];
- struct cpmac_int_regs rx_int;
- volatile u32 mac_int_stat_raw;
- volatile u32 mac_int_stat_masked;
- volatile u32 mac_int_enable;
- volatile u32 mac_int_clear;
- volatile u32 mac_addr_low[8];
- volatile u32 mac_addr_mid;
- volatile u32 mac_addr_high;
- volatile u32 mac_hash_low;
- volatile u32 mac_hash_high;
- volatile u32 boff_test;
- volatile u32 pac_test;
- volatile u32 rx_pause;
- volatile u32 tx_pause;
- volatile u32 unused5[2];
- struct cpmac_stats rx_stats;
- struct cpmac_stats tx_stats;
- volatile u32 unused6[232];
- volatile u32 tx_ptr[8];
- volatile u32 rx_ptr[8];
- volatile u32 tx_ack[8];
- volatile u32 rx_ack[8];
-
-} __attribute__ ((packed));
-
-struct cpmac_mdio_regs {
- volatile u32 version;
- volatile u32 control;
-#define MDIOC_IDLE 0x80000000
-#define MDIOC_ENABLE 0x40000000
-#define MDIOC_PREAMBLE 0x00100000
-#define MDIOC_FAULT 0x00080000
-#define MDIOC_FAULTDETECT 0x00040000
-#define MDIOC_INTTEST 0x00020000
-#define MDIOC_CLKDIV(div) ((div) & 0xff)
- volatile u32 alive;
- volatile u32 link;
- struct cpmac_int_regs link_int;
- struct cpmac_int_regs user_int;
- u32 unused[20];
- volatile u32 access;
-#define MDIO_BUSY 0x80000000
-#define MDIO_WRITE 0x40000000
-#define MDIO_REG(reg) (((reg) & 0x1f) << 21)
-#define MDIO_PHY(phy) (((phy) & 0x1f) << 16)
-#define MDIO_DATA(data) ((data) & 0xffff)
- volatile u32 physel;
-} __attribute__ ((packed));
-
-/* Descriptor */
struct cpmac_desc {
u32 hw_next;
u32 hw_data;
u16 bufflags;
u16 datalen;
u16 dataflags;
-/* Flags bits */
-#define CPMAC_SOP 0x8000
-#define CPMAC_EOP 0x4000
-#define CPMAC_OWN 0x2000
-#define CPMAC_EOQ 0x1000
+#define CPMAC_SOP 0x8000
+#define CPMAC_EOP 0x4000
+#define CPMAC_OWN 0x2000
+#define CPMAC_EOQ 0x1000
struct sk_buff *skb;
struct cpmac_desc *next;
-} __attribute__ ((packed));
+ dma_addr_t mapping;
+ dma_addr_t data_mapping;
+};
struct cpmac_priv {
- struct net_device_stats stats;
spinlock_t lock;
- struct sk_buff *skb_pool;
- int free_skbs;
struct cpmac_desc *rx_head;
int tx_head, tx_tail;
+ int ring_size;
struct cpmac_desc *desc_ring;
- struct cpmac_regs *regs;
+ dma_addr_t dma_ring;
+ void __iomem *regs;
struct mii_bus *mii_bus;
struct phy_device *phy;
char phy_name[BUS_ID_SIZE];
- struct plat_cpmac_data *config;
int oldlink, oldspeed, oldduplex;
u32 msg_enable;
- struct net_device *dev;
- struct work_struct alloc_work;
+ struct platform_device *pdev;
};
static irqreturn_t cpmac_irq(int, void *);
static int cpmac_stop(struct net_device *dev);
static int cpmac_open(struct net_device *dev);
-#undef CPMAC_DEBUG
-#define CPMAC_LOW_THRESH 32
-#define CPMAC_ALLOC_SIZE 64
-#define CPMAC_SKB_SIZE 1518
-#define CPMAC_TX_RING_SIZE 8
-
-#ifdef CPMAC_DEBUG
-static void cpmac_dump_regs(u32 *base, int count)
+static void cpmac_dump_regs(struct net_device *dev)
{
int i;
- for (i = 0; i < (count + 3) / 4; i++) {
- if (i % 4 == 0) printk("\nCPMAC[0x%04x]:", i * 4);
- printk(" 0x%08x", *(base + i));
+ struct cpmac_priv *priv = netdev_priv(dev);
+ for (i = 0; i < CPMAC_REG_END; i += 4) {
+ if (i % 16 == 0) {
+ if (i)
+ printk("\n");
+ printk(KERN_DEBUG "%s: reg[%p]:", dev->name,
+ priv->regs + i);
+ }
+ printk(" %08x", cpmac_read(priv->regs, i));
}
printk("\n");
}
-static const char *cpmac_dump_buf(const uint8_t * buf, unsigned size)
+static void cpmac_dump_desc(struct net_device *dev, struct cpmac_desc *desc)
{
- static char buffer[3 * 25 + 1];
- char *p = &buffer[0];
- if (size > 20)
- size = 20;
- while (size-- > 0) {
- p += sprintf(p, " %02x", *buf++);
- }
- return buffer;
+ int i;
+ printk(KERN_DEBUG "%s: desc[%p]:", dev->name, desc);
+ for (i = 0; i < sizeof(*desc) / 4; i++)
+ printk(" %08x", ((u32 *)desc)[i]);
+ printk("\n");
}
-#endif
-static int cpmac_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
+static void cpmac_dump_skb(struct net_device *dev, struct sk_buff *skb)
{
- struct cpmac_mdio_regs *regs = (struct cpmac_mdio_regs *)bus->priv;
- volatile u32 val;
-
- while ((val = regs->access) & MDIO_BUSY);
- regs->access = MDIO_BUSY | MDIO_REG(regnum & 0x1f) |
- MDIO_PHY(phy_id & 0x1f);
- while ((val = regs->access) & MDIO_BUSY);
-
- return val & 0xffff;
+ int i;
+ printk(KERN_DEBUG "%s: skb 0x%p, len=%d\n", dev->name, skb, skb->len);
+ for (i = 0; i < skb->len; i++) {
+ if (i % 16 == 0) {
+ if (i)
+ printk("\n");
+ printk(KERN_DEBUG "%s: data[%p]:", dev->name,
+ skb->data + i);
+ }
+ printk(" %02x", ((u8 *)skb->data)[i]);
+ }
+ printk("\n");
}
-static int cpmac_mdio_write(struct mii_bus *bus, int phy_id, int regnum, u16 val)
+static int cpmac_mdio_read(struct mii_bus *bus, int phy_id, int reg)
{
- struct cpmac_mdio_regs *regs = (struct cpmac_mdio_regs *)bus->priv;
- volatile u32 tmp;
-
- while ((tmp = regs->access) & MDIO_BUSY);
- regs->access = MDIO_BUSY | MDIO_WRITE |
- MDIO_REG(regnum & 0x1f) | MDIO_PHY(phy_id & 0x1f) |
- val;
+ u32 val;
+
+ while (cpmac_read(bus->priv, CPMAC_MDIO_ACCESS(0)) & MDIO_BUSY)
+ cpu_relax();
+ cpmac_write(bus->priv, CPMAC_MDIO_ACCESS(0), MDIO_BUSY | MDIO_REG(reg) |
+ MDIO_PHY(phy_id));
+ while ((val = cpmac_read(bus->priv, CPMAC_MDIO_ACCESS(0))) & MDIO_BUSY)
+ cpu_relax();
+ return MDIO_DATA(val);
+}
+static int cpmac_mdio_write(struct mii_bus *bus, int phy_id,
+ int reg, u16 val)
+{
+ while (cpmac_read(bus->priv, CPMAC_MDIO_ACCESS(0)) & MDIO_BUSY)
+ cpu_relax();
+ cpmac_write(bus->priv, CPMAC_MDIO_ACCESS(0), MDIO_BUSY | MDIO_WRITE |
+ MDIO_REG(reg) | MDIO_PHY(phy_id) | MDIO_DATA(val));
return 0;
}
static int cpmac_mdio_reset(struct mii_bus *bus)
{
- struct cpmac_mdio_regs *regs = (struct cpmac_mdio_regs *)bus->priv;
-
ar7_device_reset(AR7_RESET_BIT_MDIO);
- regs->control = MDIOC_ENABLE |
- MDIOC_CLKDIV(ar7_cpmac_freq() / 2200000 - 1);
-
+ cpmac_write(bus->priv, CPMAC_MDIO_CONTROL, MDIOC_ENABLE |
+ MDIOC_CLKDIV(ar7_cpmac_freq() / 2200000 - 1));
return 0;
}
return 0;
}
-static int cpmac_set_mac_address(struct net_device *dev, void *addr)
-{
- struct sockaddr *sa = addr;
-
- if (dev->flags & IFF_UP)
- return -EBUSY;
-
- memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
-
- return 0;
-}
-
static void cpmac_set_multicast_list(struct net_device *dev)
{
struct dev_mc_list *iter;
int i;
- int hash, tmp;
- int hashlo = 0, hashhi = 0;
+ u8 tmp;
+ u32 mbp, bit, hash[2] = { 0, };
struct cpmac_priv *priv = netdev_priv(dev);
- if(dev->flags & IFF_PROMISC) {
- priv->regs->mbp &= ~MBP_PROMISCCHAN(0); /* promisc channel 0 */
- priv->regs->mbp |= MBP_RXPROMISC;
+ mbp = cpmac_read(priv->regs, CPMAC_MBP);
+ if (dev->flags & IFF_PROMISC) {
+ cpmac_write(priv->regs, CPMAC_MBP, (mbp & ~MBP_PROMISCCHAN(0)) |
+ MBP_RXPROMISC);
} else {
- priv->regs->mbp &= ~MBP_RXPROMISC;
- if(dev->flags & IFF_ALLMULTI) {
+ cpmac_write(priv->regs, CPMAC_MBP, mbp & ~MBP_RXPROMISC);
+ if (dev->flags & IFF_ALLMULTI) {
/* enable all multicast mode */
- priv->regs->mac_hash_low = 0xffffffff;
- priv->regs->mac_hash_high = 0xffffffff;
+ cpmac_write(priv->regs, CPMAC_MAC_HASH_LO, 0xffffffff);
+ cpmac_write(priv->regs, CPMAC_MAC_HASH_HI, 0xffffffff);
} else {
- for(i = 0, iter = dev->mc_list; i < dev->mc_count;
- i++, iter = iter->next) {
- hash = 0;
+ /*
+ * cpmac uses some strange mac address hashing
+ * (not crc32)
+ */
+ for (i = 0, iter = dev->mc_list; i < dev->mc_count;
+ i++, iter = iter->next) {
+ bit = 0;
tmp = iter->dmi_addr[0];
- hash ^= (tmp >> 2) ^ (tmp << 4);
+ bit ^= (tmp >> 2) ^ (tmp << 4);
tmp = iter->dmi_addr[1];
- hash ^= (tmp >> 4) ^ (tmp << 2);
+ bit ^= (tmp >> 4) ^ (tmp << 2);
tmp = iter->dmi_addr[2];
- hash ^= (tmp >> 6) ^ tmp;
+ bit ^= (tmp >> 6) ^ tmp;
+ tmp = iter->dmi_addr[3];
+ bit ^= (tmp >> 2) ^ (tmp << 4);
tmp = iter->dmi_addr[4];
- hash ^= (tmp >> 2) ^ (tmp << 4);
+ bit ^= (tmp >> 4) ^ (tmp << 2);
tmp = iter->dmi_addr[5];
- hash ^= (tmp >> 4) ^ (tmp << 2);
- tmp = iter->dmi_addr[6];
- hash ^= (tmp >> 6) ^ tmp;
- hash &= 0x3f;
- if(hash < 32) {
- hashlo |= 1<<hash;
- } else {
- hashhi |= 1<<(hash - 32);
- }
+ bit ^= (tmp >> 6) ^ tmp;
+ bit &= 0x3f;
+ hash[bit / 32] |= 1 << (bit % 32);
}
- priv->regs->mac_hash_low = hashlo;
- priv->regs->mac_hash_high = hashhi;
- }
- }
-}
-
-static struct sk_buff *cpmac_get_skb(struct net_device *dev)
-{
- struct sk_buff *skb;
- struct cpmac_priv *priv = netdev_priv(dev);
-
- skb = priv->skb_pool;
- if (likely(skb)) {
- priv->skb_pool = skb->next;
- } else {
- skb = dev_alloc_skb(CPMAC_SKB_SIZE + 2);
- if (skb) {
- skb->next = NULL;
- skb_reserve(skb, 2);
- skb->dev = priv->dev;
+ cpmac_write(priv->regs, CPMAC_MAC_HASH_LO, hash[0]);
+ cpmac_write(priv->regs, CPMAC_MAC_HASH_HI, hash[1]);
}
}
-
- if (likely(priv->free_skbs))
- priv->free_skbs--;
-
- if (priv->free_skbs < CPMAC_LOW_THRESH)
- schedule_work(&priv->alloc_work);
-
- return skb;
}
-static inline struct sk_buff *cpmac_rx_one(struct net_device *dev,
- struct cpmac_priv *priv,
- struct cpmac_desc *desc)
+static struct sk_buff *cpmac_rx_one(struct net_device *dev,
+ struct cpmac_priv *priv,
+ struct cpmac_desc *desc)
{
unsigned long flags;
- char *data;
struct sk_buff *skb, *result = NULL;
- priv->regs->rx_ack[0] = virt_to_phys(desc);
+ if (unlikely(netif_msg_hw(priv)))
+ cpmac_dump_desc(dev, desc);
+ cpmac_write(priv->regs, CPMAC_RX_ACK(0), (u32)desc->mapping);
if (unlikely(!desc->datalen)) {
- if (printk_ratelimit())
+ if (netif_msg_rx_err(priv) && net_ratelimit())
printk(KERN_WARNING "%s: rx: spurious interrupt\n",
dev->name);
- priv->stats.rx_errors++;
return NULL;
}
+ skb = netdev_alloc_skb(dev, CPMAC_SKB_SIZE);
spin_lock_irqsave(&priv->lock, flags);
- skb = cpmac_get_skb(dev);
if (likely(skb)) {
- data = (char *)phys_to_virt(desc->hw_data);
- dma_cache_inv((u32)data, desc->datalen);
+ skb_reserve(skb, 2);
skb_put(desc->skb, desc->datalen);
desc->skb->protocol = eth_type_trans(desc->skb, dev);
desc->skb->ip_summed = CHECKSUM_NONE;
- priv->stats.rx_packets++;
- priv->stats.rx_bytes += desc->datalen;
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += desc->datalen;
result = desc->skb;
+ dma_unmap_single(&dev->dev, desc->data_mapping, CPMAC_SKB_SIZE,
+ DMA_FROM_DEVICE);
desc->skb = skb;
+ desc->data_mapping = dma_map_single(&dev->dev, skb->data,
+ CPMAC_SKB_SIZE,
+ DMA_FROM_DEVICE);
+ desc->hw_data = (u32)desc->data_mapping;
+ if (unlikely(netif_msg_pktdata(priv))) {
+ printk(KERN_DEBUG "%s: received packet:\n", dev->name);
+ cpmac_dump_skb(dev, result);
+ }
} else {
-#ifdef CPMAC_DEBUG
- if (printk_ratelimit())
- printk("%s: low on skbs, dropping packet\n",
- dev->name);
-#endif
- priv->stats.rx_dropped++;
+ if (netif_msg_rx_err(priv) && net_ratelimit())
+ printk(KERN_WARNING
+ "%s: low on skbs, dropping packet\n", dev->name);
+ dev->stats.rx_dropped++;
}
spin_unlock_irqrestore(&priv->lock, flags);
- desc->hw_data = virt_to_phys(desc->skb->data);
desc->buflen = CPMAC_SKB_SIZE;
desc->dataflags = CPMAC_OWN;
- dma_cache_wback((u32)desc, 16);
return result;
}
}
desc = priv->rx_head;
- dma_cache_inv((u32)desc, 16);
-#ifdef CPMAC_DEBUG
- printk(KERN_DEBUG "%s: len=%d, %s\n", __func__, pkt->datalen,
- cpmac_dump_buf(data, pkt->datalen));
-#endif
while ((desc->dataflags & CPMAC_OWN) == 0) {
skb = cpmac_rx_one(dev, priv, desc);
- if (likely(skb)) {
+ if (likely(skb))
netif_rx(skb);
- }
desc = desc->next;
- dma_cache_inv((u32)desc, 16);
}
priv->rx_head = desc;
- priv->regs->rx_ptr[0] = virt_to_phys(desc);
+ cpmac_write(priv->regs, CPMAC_RX_PTR(0), (u32)desc->mapping);
spin_unlock(&priv->lock);
}
struct cpmac_priv *priv = netdev_priv(dev);
if (unlikely(!priv->rx_head)) {
- if (printk_ratelimit())
+ if (netif_msg_rx_err(priv) && net_ratelimit())
printk(KERN_WARNING "%s: rx: polling, but no queue\n",
dev->name);
netif_rx_complete(dev);
}
desc = priv->rx_head;
- dma_cache_inv((u32)desc, 16);
-
+
while ((received < quota) && ((desc->dataflags & CPMAC_OWN) == 0)) {
skb = cpmac_rx_one(dev, priv, desc);
if (likely(skb)) {
received++;
}
desc = desc->next;
- priv->rx_head = desc;
- dma_cache_inv((u32)desc, 16);
}
+ priv->rx_head = desc;
*budget -= received;
dev->quota -= received;
-#ifdef CPMAC_DEBUG
- printk("%s: processed %d packets\n", dev->name, received);
-#endif
+ if (unlikely(netif_msg_rx_status(priv)))
+ printk(KERN_DEBUG "%s: poll processed %d packets\n", dev->name,
+ received);
if (desc->dataflags & CPMAC_OWN) {
- priv->regs->rx_ptr[0] = virt_to_phys(desc);
netif_rx_complete(dev);
- priv->regs->rx_int.enable = 0x1;
- priv->regs->rx_int.clear = 0xfe;
+ cpmac_write(priv->regs, CPMAC_RX_PTR(0), (u32)desc->mapping);
+ cpmac_write(priv->regs, CPMAC_RX_INT_ENABLE, 1);
return 0;
}
return 1;
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
-static void
-cpmac_alloc_skbs(struct work_struct *work)
-{
- struct cpmac_priv *priv = container_of(work, struct cpmac_priv,
- alloc_work);
-#else
-static void
-cpmac_alloc_skbs(void *data)
-{
- struct net_device *dev = (struct net_device*)data;
- struct cpmac_priv *priv = netdev_priv(dev);
-#endif
- unsigned long flags;
- int i, num_skbs = 0;
- struct sk_buff *skb, *skbs = NULL;
-
- for (i = 0; i < CPMAC_ALLOC_SIZE; i++) {
- skb = alloc_skb(CPMAC_SKB_SIZE + 2, GFP_KERNEL);
- if (!skb)
- break;
- skb->next = skbs;
- skb_reserve(skb, 2);
- skb->dev = priv->dev;
- num_skbs++;
- skbs = skb;
- }
-
- if (skbs) {
- spin_lock_irqsave(&priv->lock, flags);
- for (skb = priv->skb_pool; skb && skb->next; skb = skb->next);
- if (!skb) {
- priv->skb_pool = skbs;
- } else {
- skb->next = skbs;
- }
- priv->free_skbs += num_skbs;
- spin_unlock_irqrestore(&priv->lock, flags);
-#ifdef CPMAC_DEBUG
- printk("%s: allocated %d skbs\n", priv->dev->name, num_skbs);
-#endif
- }
-}
-
static int cpmac_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
unsigned long flags;
- int len, chan;
+ int channel, len;
struct cpmac_desc *desc;
struct cpmac_priv *priv = netdev_priv(dev);
- len = skb->len;
-#ifdef CPMAC_DEBUG
- printk(KERN_DEBUG "%s: len=%d\n", __func__, len); //cpmac_dump_buf(const uint8_t * buf, unsigned size)
-#endif
- if (unlikely(len < ETH_ZLEN)) {
- if (unlikely(skb_padto(skb, ETH_ZLEN))) {
- if (printk_ratelimit())
- printk(KERN_NOTICE "%s: padding failed, dropping\n",
- dev->name);
- spin_lock_irqsave(&priv->lock, flags);
- priv->stats.tx_dropped++;
- spin_unlock_irqrestore(&priv->lock, flags);
- return -ENOMEM;
- }
- len = ETH_ZLEN;
+ if (unlikely(skb_padto(skb, ETH_ZLEN))) {
+ if (netif_msg_tx_err(priv) && net_ratelimit())
+ printk(KERN_WARNING"%s: tx: padding failed, dropping\n",
+ dev->name);
+ spin_lock_irqsave(&priv->lock, flags);
+ dev->stats.tx_dropped++;
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return -ENOMEM;
}
+
+ len = max(skb->len, ETH_ZLEN);
spin_lock_irqsave(&priv->lock, flags);
- chan = priv->tx_tail++;
- priv->tx_tail %= 8;
+ channel = priv->tx_tail++;
+ priv->tx_tail %= CPMAC_TX_RING_SIZE;
if (priv->tx_tail == priv->tx_head)
netif_stop_queue(dev);
- desc = &priv->desc_ring[chan];
- dma_cache_inv((u32)desc, 16);
+ desc = &priv->desc_ring[channel];
if (desc->dataflags & CPMAC_OWN) {
- printk(KERN_NOTICE "%s: tx dma ring full, dropping\n", dev->name);
- priv->stats.tx_dropped++;
+ if (netif_msg_tx_err(priv) && net_ratelimit())
+ printk(KERN_WARNING "%s: tx dma ring full, dropping\n",
+ dev->name);
+ dev->stats.tx_dropped++;
spin_unlock_irqrestore(&priv->lock, flags);
+ dev_kfree_skb_any(skb);
return -ENOMEM;
}
dev->trans_start = jiffies;
+ spin_unlock_irqrestore(&priv->lock, flags);
desc->dataflags = CPMAC_SOP | CPMAC_EOP | CPMAC_OWN;
desc->skb = skb;
- desc->hw_data = virt_to_phys(skb->data);
- dma_cache_wback((u32)skb->data, len);
- desc->buflen = len;
+ desc->data_mapping = dma_map_single(&dev->dev, skb->data, len,
+ DMA_TO_DEVICE);
+ desc->hw_data = (u32)desc->data_mapping;
desc->datalen = len;
- desc->hw_next = 0;
- dma_cache_wback((u32)desc, 16);
- priv->regs->tx_ptr[chan] = virt_to_phys(desc);
- spin_unlock_irqrestore(&priv->lock, flags);
+ desc->buflen = len;
+ if (unlikely(netif_msg_tx_queued(priv)))
+ printk(KERN_DEBUG "%s: sending 0x%p, len=%d\n", dev->name, skb,
+ skb->len);
+ if (unlikely(netif_msg_hw(priv)))
+ cpmac_dump_desc(dev, desc);
+ if (unlikely(netif_msg_pktdata(priv)))
+ cpmac_dump_skb(dev, skb);
+ cpmac_write(priv->regs, CPMAC_TX_PTR(channel), (u32)desc->mapping);
return 0;
}
spin_lock(&priv->lock);
desc = &priv->desc_ring[channel];
- priv->regs->tx_ack[channel] = virt_to_phys(desc);
+ cpmac_write(priv->regs, CPMAC_TX_ACK(channel), (u32)desc->mapping);
if (likely(desc->skb)) {
- priv->stats.tx_packets++;
- priv->stats.tx_bytes += desc->skb->len;
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += desc->skb->len;
+ dma_unmap_single(&dev->dev, desc->data_mapping, desc->skb->len,
+ DMA_TO_DEVICE);
+
+ if (unlikely(netif_msg_tx_done(priv)))
+ printk(KERN_DEBUG "%s: sent 0x%p, len=%d\n", dev->name,
+ desc->skb, desc->skb->len);
+
dev_kfree_skb_irq(desc->skb);
if (netif_queue_stopped(dev))
netif_wake_queue(dev);
- } else {
- if (printk_ratelimit())
- printk(KERN_NOTICE "%s: end_xmit: spurious interrupt\n",
- dev->name);
- }
+ } else
+ if (netif_msg_tx_err(priv) && net_ratelimit())
+ printk(KERN_WARNING
+ "%s: end_xmit: spurious interrupt\n", dev->name);
spin_unlock(&priv->lock);
}
{
int i;
struct cpmac_priv *priv = netdev_priv(dev);
+ struct plat_cpmac_data *pdata = priv->pdev->dev.platform_data;
- ar7_device_reset(priv->config->reset_bit);
- priv->regs->rx_ctrl.control &= ~1;
- priv->regs->tx_ctrl.control &= ~1;
+ ar7_device_reset(pdata->reset_bit);
+ cpmac_write(priv->regs, CPMAC_RX_CONTROL,
+ cpmac_read(priv->regs, CPMAC_RX_CONTROL) & ~1);
+ cpmac_write(priv->regs, CPMAC_TX_CONTROL,
+ cpmac_read(priv->regs, CPMAC_TX_CONTROL) & ~1);
for (i = 0; i < 8; i++) {
- priv->regs->tx_ptr[i] = 0;
- priv->regs->rx_ptr[i] = 0;
+ cpmac_write(priv->regs, CPMAC_TX_PTR(i), 0);
+ cpmac_write(priv->regs, CPMAC_RX_PTR(i), 0);
}
- priv->regs->mac_control &= ~MAC_MII; /* disable mii */
+ cpmac_write(priv->regs, CPMAC_MAC_CONTROL,
+ cpmac_read(priv->regs, CPMAC_MAC_CONTROL) & ~MAC_MII);
}
static inline void cpmac_free_rx_ring(struct net_device *dev)
return;
desc = priv->rx_head;
- dma_cache_inv((u32)desc, 16);
-
- for (i = 0; i < rx_ring_size; i++) {
+
+ for (i = 0; i < priv->ring_size; i++) {
desc->buflen = CPMAC_SKB_SIZE;
if ((desc->dataflags & CPMAC_OWN) == 0) {
+ if (netif_msg_rx_err(priv) && net_ratelimit())
+ printk(KERN_WARNING "%s: packet dropped\n",
+ dev->name);
+ if (unlikely(netif_msg_hw(priv)))
+ cpmac_dump_desc(dev, desc);
desc->dataflags = CPMAC_OWN;
- priv->stats.rx_dropped++;
+ dev->stats.rx_dropped++;
}
- dma_cache_wback((u32)desc, 16);
desc = desc->next;
- dma_cache_inv((u32)desc, 16);
}
}
static irqreturn_t cpmac_irq(int irq, void *dev_id)
{
- struct net_device *dev = (struct net_device *)dev_id;
- struct cpmac_priv *priv = netdev_priv(dev);
+ struct net_device *dev = dev_id;
+ struct cpmac_priv *priv;
u32 status;
if (!dev)
return IRQ_NONE;
- status = priv->regs->mac_int_vector;
+ priv = netdev_priv(dev);
+
+ status = cpmac_read(priv->regs, CPMAC_MAC_INT_VECTOR);
+
+ if (unlikely(netif_msg_intr(priv)))
+ printk(KERN_DEBUG "%s: interrupt status: 0x%08x\n", dev->name,
+ status);
- if (status & INTST_TX) {
+ if (status & MAC_INT_TX)
cpmac_end_xmit(dev, (status & 7));
- }
- if (status & INTST_RX) {
- if (disable_napi) {
+ if (status & MAC_INT_RX) {
+ if (disable_napi)
cpmac_rx(dev);
- } else {
- priv->regs->rx_int.enable = 0;
- priv->regs->rx_int.clear = 0xff;
+ else {
+ cpmac_write(priv->regs, CPMAC_RX_INT_CLEAR, 1);
netif_rx_schedule(dev);
}
}
- priv->regs->mac_eoi_vector = 0;
+ cpmac_write(priv->regs, CPMAC_MAC_EOI_VECTOR, 0);
- if (unlikely(status & (INTST_HOST | INTST_STATUS))) {
- if (printk_ratelimit()) {
- printk(KERN_ERR "%s: hw error, resetting...\n", dev->name);
- }
+ if (unlikely(status & (MAC_INT_HOST | MAC_INT_STATUS))) {
+ if (netif_msg_drv(priv) && net_ratelimit())
+ printk(KERN_ERR "%s: hw error, resetting...\n",
+ dev->name);
+ if (unlikely(netif_msg_hw(priv)))
+ cpmac_dump_regs(dev);
spin_lock(&priv->lock);
phy_stop(priv->phy);
cpmac_reset(dev);
struct cpmac_priv *priv = netdev_priv(dev);
struct cpmac_desc *desc;
- priv->stats.tx_errors++;
+ dev->stats.tx_errors++;
desc = &priv->desc_ring[priv->tx_head++];
priv->tx_head %= 8;
- printk("%s: transmit timeout\n", dev->name);
+ if (netif_msg_tx_err(priv) && net_ratelimit())
+ printk(KERN_WARNING "%s: transmit timeout\n", dev->name);
if (desc->skb)
- dev_kfree_skb(desc->skb);
+ dev_kfree_skb_any(desc->skb);
netif_wake_queue(dev);
}
return -EINVAL;
if (!priv->phy)
return -EINVAL;
- if ((cmd == SIOCGMIIPHY) || (cmd == SIOCGMIIREG) ||
+ if ((cmd == SIOCGMIIPHY) || (cmd == SIOCGMIIREG) ||
(cmd == SIOCSMIIREG))
return phy_mii_ioctl(priv->phy, if_mii(ifr), cmd);
return -EINVAL;
}
-static void cpmac_get_drvinfo(struct net_device *dev,
+static void cpmac_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
+{
+ struct cpmac_priv *priv = netdev_priv(dev);
+
+ ring->rx_max_pending = 1024;
+ ring->rx_mini_max_pending = 1;
+ ring->rx_jumbo_max_pending = 1;
+ ring->tx_max_pending = 1;
+
+ ring->rx_pending = priv->ring_size;
+ ring->rx_mini_pending = 1;
+ ring->rx_jumbo_pending = 1;
+ ring->tx_pending = 1;
+}
+
+static int cpmac_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
+{
+ struct cpmac_priv *priv = netdev_priv(dev);
+
+ if (dev->flags && IFF_UP)
+ return -EBUSY;
+ priv->ring_size = ring->rx_pending;
+ return 0;
+}
+
+static void cpmac_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
strcpy(info->driver, "cpmac");
.set_settings = cpmac_set_settings,
.get_drvinfo = cpmac_get_drvinfo,
.get_link = ethtool_op_get_link,
+ .get_ringparam = cpmac_get_ringparam,
+ .set_ringparam = cpmac_set_ringparam,
};
-static struct net_device_stats *cpmac_stats(struct net_device *dev)
-{
- struct cpmac_priv *priv = netdev_priv(dev);
-
- if (netif_device_present(dev))
- return &priv->stats;
-
- return NULL;
-}
-
-static int cpmac_change_mtu(struct net_device *dev, int mtu)
-{
- unsigned long flags;
- struct cpmac_priv *priv = netdev_priv(dev);
- spinlock_t *lock = &priv->lock;
-
- if ((mtu < 68) || (mtu > 1500))
- return -EINVAL;
-
- spin_lock_irqsave(lock, flags);
- dev->mtu = mtu;
- spin_unlock_irqrestore(lock, flags);
-
- return 0;
-}
-
static void cpmac_adjust_link(struct net_device *dev)
{
struct cpmac_priv *priv = netdev_priv(dev);
priv->oldduplex = -1;
}
- if (new_state)
+ if (new_state && netif_msg_link(priv) && net_ratelimit())
phy_print_status(priv->phy);
spin_unlock_irqrestore(&priv->lock, flags);
int i;
struct cpmac_priv *priv = netdev_priv(dev);
- for (i = 0; i < 8; i++)
- priv->regs->tx_ptr[i] = 0;
- priv->regs->rx_ptr[0] = virt_to_phys(priv->rx_head);
+ for (i = 0; i < 8; i++) {
+ cpmac_write(priv->regs, CPMAC_TX_PTR(i), 0);
+ cpmac_write(priv->regs, CPMAC_RX_PTR(i), 0);
+ }
+ cpmac_write(priv->regs, CPMAC_RX_PTR(0), priv->rx_head->mapping);
- priv->regs->mbp = MBP_RXSHORT | MBP_RXBCAST | MBP_RXMCAST;
- priv->regs->unicast_enable = 0x1;
- priv->regs->unicast_clear = 0xfe;
- priv->regs->buffer_offset = 0;
+ cpmac_write(priv->regs, CPMAC_MBP, MBP_RXSHORT | MBP_RXBCAST |
+ MBP_RXMCAST);
+ cpmac_write(priv->regs, CPMAC_UNICAST_ENABLE, 1);
+ cpmac_write(priv->regs, CPMAC_UNICAST_CLEAR, 0xfe);
+ cpmac_write(priv->regs, CPMAC_BUFFER_OFFSET, 0);
for (i = 0; i < 8; i++)
- priv->regs->mac_addr_low[i] = dev->dev_addr[5];
- priv->regs->mac_addr_mid = dev->dev_addr[4];
- priv->regs->mac_addr_high = dev->dev_addr[0] | (dev->dev_addr[1] << 8)
- | (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24);
- priv->regs->max_len = CPMAC_SKB_SIZE;
- priv->regs->rx_int.enable = 0x1;
- priv->regs->rx_int.clear = 0xfe;
- priv->regs->tx_int.enable = 0xff;
- priv->regs->tx_int.clear = 0;
- priv->regs->mac_int_enable = 3;
- priv->regs->mac_int_clear = 0xfc;
-
- priv->regs->rx_ctrl.control |= 1;
- priv->regs->tx_ctrl.control |= 1;
- priv->regs->mac_control |= MAC_MII | MAC_FDX;
+ cpmac_write(priv->regs, CPMAC_MAC_ADDR_LO(i), dev->dev_addr[5]);
+ cpmac_write(priv->regs, CPMAC_MAC_ADDR_MID, dev->dev_addr[4]);
+ cpmac_write(priv->regs, CPMAC_MAC_ADDR_HI, dev->dev_addr[0] |
+ (dev->dev_addr[1] << 8) | (dev->dev_addr[2] << 16) |
+ (dev->dev_addr[3] << 24));
+ cpmac_write(priv->regs, CPMAC_MAX_LENGTH, CPMAC_SKB_SIZE);
+ cpmac_write(priv->regs, CPMAC_RX_INT_CLEAR, 0xff);
+ cpmac_write(priv->regs, CPMAC_TX_INT_CLEAR, 0xff);
+ cpmac_write(priv->regs, CPMAC_MAC_INT_CLEAR, 0xff);
+ cpmac_write(priv->regs, CPMAC_RX_INT_ENABLE, 1);
+ cpmac_write(priv->regs, CPMAC_TX_INT_ENABLE, 0xff);
+ cpmac_write(priv->regs, CPMAC_MAC_INT_ENABLE, 3);
+
+ cpmac_write(priv->regs, CPMAC_RX_CONTROL,
+ cpmac_read(priv->regs, CPMAC_RX_CONTROL) | 1);
+ cpmac_write(priv->regs, CPMAC_TX_CONTROL,
+ cpmac_read(priv->regs, CPMAC_TX_CONTROL) | 1);
+ cpmac_write(priv->regs, CPMAC_MAC_CONTROL,
+ cpmac_read(priv->regs, CPMAC_MAC_CONTROL) | MAC_MII |
+ MAC_FDX);
priv->phy->state = PHY_CHANGELINK;
phy_start(priv->phy);
{
int i, size, res;
struct cpmac_priv *priv = netdev_priv(dev);
+ struct resource *mem;
struct cpmac_desc *desc;
struct sk_buff *skb;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
priv->phy = phy_connect(dev, priv->phy_name, &cpmac_adjust_link,
0, PHY_INTERFACE_MODE_MII);
-#else
- priv->phy = phy_connect(dev, priv->phy_name, &cpmac_adjust_link, 0);
-#endif
if (IS_ERR(priv->phy)) {
- printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
+ if (netif_msg_drv(priv))
+ printk(KERN_ERR "%s: Could not attach to PHY\n",
+ dev->name);
return PTR_ERR(priv->phy);
}
- if (!request_mem_region(dev->mem_start, dev->mem_end -
- dev->mem_start, dev->name)) {
- printk("%s: failed to request registers\n",
- dev->name);
+ mem = platform_get_resource_byname(priv->pdev, IORESOURCE_MEM, "regs");
+ if (!request_mem_region(mem->start, mem->end - mem->start, dev->name)) {
+ if (netif_msg_drv(priv))
+ printk(KERN_ERR "%s: failed to request registers\n",
+ dev->name);
res = -ENXIO;
goto fail_reserve;
}
- priv->regs = ioremap_nocache(dev->mem_start, dev->mem_end -
- dev->mem_start);
+ priv->regs = ioremap(mem->start, mem->end - mem->start);
if (!priv->regs) {
- printk("%s: failed to remap registers\n", dev->name);
+ if (netif_msg_drv(priv))
+ printk(KERN_ERR "%s: failed to remap registers\n",
+ dev->name);
res = -ENXIO;
goto fail_remap;
}
priv->rx_head = NULL;
- size = sizeof(struct cpmac_desc) * (rx_ring_size +
- CPMAC_TX_RING_SIZE);
- priv->desc_ring = (struct cpmac_desc *)kmalloc(size, GFP_KERNEL);
+ size = priv->ring_size + CPMAC_TX_RING_SIZE;
+ priv->desc_ring = dma_alloc_coherent(&dev->dev,
+ sizeof(struct cpmac_desc) * size,
+ &priv->dma_ring,
+ GFP_KERNEL);
if (!priv->desc_ring) {
res = -ENOMEM;
goto fail_alloc;
}
- memset((char *)priv->desc_ring, 0, size);
-
- priv->skb_pool = NULL;
- priv->free_skbs = 0;
priv->rx_head = &priv->desc_ring[CPMAC_TX_RING_SIZE];
+ for (i = 0; i < size; i++)
+ priv->desc_ring[i].mapping = priv->dma_ring + sizeof(*desc) * i;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
- INIT_WORK(&priv->alloc_work, cpmac_alloc_skbs);
-#else
- INIT_WORK(&priv->alloc_work, cpmac_alloc_skbs, dev);
-#endif
- schedule_work(&priv->alloc_work);
- flush_scheduled_work();
-
- for (i = 0; i < rx_ring_size; i++) {
- desc = &priv->rx_head[i];
- skb = cpmac_get_skb(dev);
- if (!skb) {
+ for (i = 0, desc = &priv->rx_head[i]; i < priv->ring_size; i++, desc++) {
+ skb = netdev_alloc_skb(dev, CPMAC_SKB_SIZE);
+ if (unlikely(!skb)) {
res = -ENOMEM;
goto fail_desc;
}
+ skb_reserve(skb, 2);
desc->skb = skb;
- desc->hw_data = virt_to_phys(skb->data);
+ desc->data_mapping = dma_map_single(&dev->dev, skb->data,
+ CPMAC_SKB_SIZE,
+ DMA_FROM_DEVICE);
+ desc->hw_data = (u32)desc->data_mapping;
desc->buflen = CPMAC_SKB_SIZE;
desc->dataflags = CPMAC_OWN;
- desc->next = &priv->rx_head[(i + 1) % rx_ring_size];
- desc->hw_next = virt_to_phys(desc->next);
- dma_cache_wback((u32)desc, 16);
+ desc->next = &priv->rx_head[(i + 1) % priv->ring_size];
+ desc->hw_next = (u32)desc->next->mapping;
}
- if((res = request_irq(dev->irq, cpmac_irq, SA_INTERRUPT,
- dev->name, dev))) {
- printk("%s: failed to obtain irq\n", dev->name);
+ if ((res = request_irq(dev->irq, cpmac_irq, IRQF_SHARED,
+ dev->name, dev))) {
+ if (netif_msg_drv(priv))
+ printk(KERN_ERR "%s: failed to obtain irq\n",
+ dev->name);
goto fail_irq;
}
fail_irq:
fail_desc:
- for (i = 0; i < rx_ring_size; i++)
- if (priv->rx_head[i].skb)
+ for (i = 0; i < priv->ring_size; i++) {
+ if (priv->rx_head[i].skb) {
kfree_skb(priv->rx_head[i].skb);
+ dma_unmap_single(&dev->dev,
+ priv->rx_head[i].data_mapping,
+ CPMAC_SKB_SIZE,
+ DMA_FROM_DEVICE);
+ }
+ }
fail_alloc:
kfree(priv->desc_ring);
-
- for (skb = priv->skb_pool; skb; skb = priv->skb_pool) {
- priv->skb_pool = skb->next;
- kfree_skb(skb);
- }
-
iounmap(priv->regs);
fail_remap:
- release_mem_region(dev->mem_start, dev->mem_end -
- dev->mem_start);
+ release_mem_region(mem->start, mem->end - mem->start);
fail_reserve:
phy_disconnect(priv->phy);
static int cpmac_stop(struct net_device *dev)
{
int i;
- struct sk_buff *skb;
struct cpmac_priv *priv = netdev_priv(dev);
+ struct resource *mem;
netif_stop_queue(dev);
cpmac_reset(dev);
- for (i = 0; i < 8; i++) {
- priv->regs->rx_ptr[i] = 0;
- priv->regs->tx_ptr[i] = 0;
- priv->regs->mbp = 0;
- }
+ for (i = 0; i < 8; i++)
+ cpmac_write(priv->regs, CPMAC_TX_PTR(i), 0);
+ cpmac_write(priv->regs, CPMAC_RX_PTR(0), 0);
+ cpmac_write(priv->regs, CPMAC_MBP, 0);
free_irq(dev->irq, dev);
- release_mem_region(dev->mem_start, dev->mem_end -
- dev->mem_start);
-
- cancel_delayed_work(&priv->alloc_work);
- flush_scheduled_work();
-
+ iounmap(priv->regs);
+ mem = platform_get_resource_byname(priv->pdev, IORESOURCE_MEM, "regs");
+ release_mem_region(mem->start, mem->end - mem->start);
priv->rx_head = &priv->desc_ring[CPMAC_TX_RING_SIZE];
- for (i = 0; i < rx_ring_size; i++)
- if (priv->rx_head[i].skb)
+ for (i = 0; i < priv->ring_size; i++) {
+ if (priv->rx_head[i].skb) {
kfree_skb(priv->rx_head[i].skb);
-
- kfree(priv->desc_ring);
-
- for (skb = priv->skb_pool; skb; skb = priv->skb_pool) {
- priv->skb_pool = skb->next;
- kfree_skb(skb);
+ dma_unmap_single(&dev->dev,
+ priv->rx_head[i].data_mapping,
+ CPMAC_SKB_SIZE,
+ DMA_FROM_DEVICE);
+ }
}
+ dma_free_coherent(&dev->dev, sizeof(struct cpmac_desc) *
+ (CPMAC_TX_RING_SIZE + priv->ring_size),
+ priv->desc_ring, priv->dma_ring);
return 0;
}
-static int external_switch = 0;
+static int external_switch;
static int __devinit cpmac_probe(struct platform_device *pdev)
{
- int i, rc, phy_id;
- struct resource *res;
+ int rc, phy_id;
+ struct resource *mem;
struct cpmac_priv *priv;
struct net_device *dev;
struct plat_cpmac_data *pdata;
- if (strcmp(pdev->name, "cpmac") != 0)
- return -ENODEV;
-
pdata = pdev->dev.platform_data;
for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
}
if (phy_id == PHY_MAX_ADDR) {
- if (external_switch) {
+ if (external_switch || dumb_switch)
phy_id = 0;
- } else {
- printk("cpmac: no PHY present\n");
+ else {
+ printk(KERN_ERR "cpmac: no PHY present\n");
return -ENODEV;
}
}
dev = alloc_etherdev(sizeof(struct cpmac_priv));
if (!dev) {
- printk(KERN_ERR "cpmac: Unable to allocate net_device structure!\n");
+ printk(KERN_ERR "cpmac: Unable to allocate net_device\n");
return -ENOMEM;
}
- SET_MODULE_OWNER(dev);
platform_set_drvdata(pdev, dev);
priv = netdev_priv(dev);
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
- if (!res) {
- rc = -ENODEV;
+ priv->pdev = pdev;
+ mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
+ if (!mem) {
+ rc = -ENODEV;
goto fail;
}
- dev->mem_start = res->start;
- dev->mem_end = res->end;
dev->irq = platform_get_irq_byname(pdev, "irq");
- dev->mtu = 1500;
dev->open = cpmac_open;
dev->stop = cpmac_stop;
dev->set_config = cpmac_config;
dev->hard_start_xmit = cpmac_start_xmit;
dev->do_ioctl = cpmac_ioctl;
- dev->get_stats = cpmac_stats;
- dev->change_mtu = cpmac_change_mtu;
- dev->set_mac_address = cpmac_set_mac_address;
dev->set_multicast_list = cpmac_set_multicast_list;
dev->tx_timeout = cpmac_tx_timeout;
dev->ethtool_ops = &cpmac_ethtool_ops;
if (!disable_napi) {
dev->poll = cpmac_poll;
- dev->weight = min(rx_ring_size, 64);
+ dev->weight = 64;
}
- memset(priv, 0, sizeof(struct cpmac_priv));
spin_lock_init(&priv->lock);
- priv->msg_enable = netif_msg_init(NETIF_MSG_WOL, 0x3fff);
- priv->config = pdata;
- priv->dev = dev;
- memcpy(dev->dev_addr, priv->config->dev_addr, sizeof(dev->dev_addr));
+ priv->msg_enable = netif_msg_init(debug_level, 0xff);
+ priv->ring_size = 64;
+ memcpy(dev->dev_addr, pdata->dev_addr, sizeof(dev->dev_addr));
if (phy_id == 31) {
snprintf(priv->phy_name, BUS_ID_SIZE, PHY_ID_FMT,
cpmac_mii.id, phy_id);
- } else {
+/* cpmac_write(cpmac_mii.priv, CPMAC_MDIO_PHYSEL(0), PHYSEL_LINKSEL
+ | PHYSEL_LINKINT | phy_id);*/
+ } else
snprintf(priv->phy_name, BUS_ID_SIZE, "fixed@%d:%d", 100, 1);
- }
if ((rc = register_netdev(dev))) {
- printk("cpmac: error %i registering device %s\n",
- rc, dev->name);
+ printk(KERN_ERR "cpmac: error %i registering device %s\n", rc,
+ dev->name);
goto fail;
}
- printk("cpmac: device %s (regs: %p, irq: %d, phy: %s, mac: ",
- dev->name, (u32 *)dev->mem_start, dev->irq,
- priv->phy_name);
- for (i = 0; i < 6; i++) {
- printk("%02x", dev->dev_addr[i]);
- if (i < 5) printk(":");
- else printk(")\n");
+ if (netif_msg_probe(priv)) {
+ printk(KERN_INFO
+ "cpmac: device %s (regs: %p, irq: %d, phy: %s, mac: "
+ MAC_FMT ")\n", dev->name, (void *)mem->start, dev->irq,
+ priv->phy_name, MAC_ARG(dev->dev_addr));
}
-
return 0;
fail:
static struct platform_driver cpmac_driver = {
.driver.name = "cpmac",
.probe = cpmac_probe,
- .remove = cpmac_remove,
+ .remove = __devexit_p(cpmac_remove),
};
int __devinit cpmac_init(void)
{
- volatile u32 mask;
+ u32 mask;
int i, res;
- cpmac_mii.priv = (struct cpmac_mdio_regs *)
- ioremap_nocache(AR7_REGS_MDIO, sizeof(struct cpmac_mdio_regs));
+
+ cpmac_mii.priv = ioremap(AR7_REGS_MDIO, 256);
if (!cpmac_mii.priv) {
- printk("Can't ioremap mdio registers\n");
+ printk(KERN_ERR "Can't ioremap mdio registers\n");
return -ENXIO;
}
cpmac_mii.reset(&cpmac_mii);
- for (i = 0; i < 300000; i++) {
- mask = ((struct cpmac_mdio_regs *)cpmac_mii.priv)->alive;
- if (mask)
+ for (i = 0; i < 300000; i++)
+ if ((mask = cpmac_read(cpmac_mii.priv, CPMAC_MDIO_ALIVE)))
break;
- }
+ else
+ cpu_relax();
mask &= 0x7fffffff;
if (mask & (mask - 1)) {
{
platform_driver_unregister(&cpmac_driver);
mdiobus_unregister(&cpmac_mii);
+ iounmap(cpmac_mii.priv);
}
module_init(cpmac_init);
projects / openwrt / svn-archive / archive.git / blobdiff