diff options
Diffstat (limited to 'drivers/net/mipsnet.c')
| -rw-r--r-- | drivers/net/mipsnet.c | 63 |
1 files changed, 31 insertions, 32 deletions
diff --git a/drivers/net/mipsnet.c b/drivers/net/mipsnet.c index d593175ab6f0..37707a0c0498 100644 --- a/drivers/net/mipsnet.c +++ b/drivers/net/mipsnet.c | |||
| @@ -7,12 +7,12 @@ | |||
| 7 | #define DEBUG | 7 | #define DEBUG |
| 8 | 8 | ||
| 9 | #include <linux/init.h> | 9 | #include <linux/init.h> |
| 10 | #include <linux/io.h> | ||
| 10 | #include <linux/kernel.h> | 11 | #include <linux/kernel.h> |
| 11 | #include <linux/module.h> | 12 | #include <linux/module.h> |
| 12 | #include <linux/netdevice.h> | 13 | #include <linux/netdevice.h> |
| 13 | #include <linux/etherdevice.h> | 14 | #include <linux/etherdevice.h> |
| 14 | #include <linux/platform_device.h> | 15 | #include <linux/platform_device.h> |
| 15 | #include <asm/io.h> | ||
| 16 | #include <asm/mips-boards/simint.h> | 16 | #include <asm/mips-boards/simint.h> |
| 17 | 17 | ||
| 18 | #include "mipsnet.h" /* actual device IO mapping */ | 18 | #include "mipsnet.h" /* actual device IO mapping */ |
| @@ -33,9 +33,8 @@ static int ioiocpy_frommipsnet(struct net_device *dev, unsigned char *kdata, | |||
| 33 | if (available_len < len) | 33 | if (available_len < len) |
| 34 | return -EFAULT; | 34 | return -EFAULT; |
| 35 | 35 | ||
| 36 | for (; len > 0; len--, kdata++) { | 36 | for (; len > 0; len--, kdata++) |
| 37 | *kdata = inb(mipsnet_reg_address(dev, rxDataBuffer)); | 37 | *kdata = inb(mipsnet_reg_address(dev, rxDataBuffer)); |
| 38 | } | ||
| 39 | 38 | ||
| 40 | return inl(mipsnet_reg_address(dev, rxDataCount)); | 39 | return inl(mipsnet_reg_address(dev, rxDataCount)); |
| 41 | } | 40 | } |
| @@ -47,16 +46,15 @@ static inline ssize_t mipsnet_put_todevice(struct net_device *dev, | |||
| 47 | char *buf_ptr = skb->data; | 46 | char *buf_ptr = skb->data; |
| 48 | 47 | ||
| 49 | pr_debug("%s: %s(): telling MIPSNET txDataCount(%d)\n", | 48 | pr_debug("%s: %s(): telling MIPSNET txDataCount(%d)\n", |
| 50 | dev->name, __FUNCTION__, skb->len); | 49 | dev->name, __FUNCTION__, skb->len); |
| 51 | 50 | ||
| 52 | outl(skb->len, mipsnet_reg_address(dev, txDataCount)); | 51 | outl(skb->len, mipsnet_reg_address(dev, txDataCount)); |
| 53 | 52 | ||
| 54 | pr_debug("%s: %s(): sending data to MIPSNET txDataBuffer(%d)\n", | 53 | pr_debug("%s: %s(): sending data to MIPSNET txDataBuffer(%d)\n", |
| 55 | dev->name, __FUNCTION__, skb->len); | 54 | dev->name, __FUNCTION__, skb->len); |
| 56 | 55 | ||
| 57 | for (; count_to_go; buf_ptr++, count_to_go--) { | 56 | for (; count_to_go; buf_ptr++, count_to_go--) |
| 58 | outb(*buf_ptr, mipsnet_reg_address(dev, txDataBuffer)); | 57 | outb(*buf_ptr, mipsnet_reg_address(dev, txDataBuffer)); |
| 59 | } | ||
| 60 | 58 | ||
| 61 | dev->stats.tx_packets++; | 59 | dev->stats.tx_packets++; |
| 62 | dev->stats.tx_bytes += skb->len; | 60 | dev->stats.tx_bytes += skb->len; |
| @@ -67,7 +65,7 @@ static inline ssize_t mipsnet_put_todevice(struct net_device *dev, | |||
| 67 | static int mipsnet_xmit(struct sk_buff *skb, struct net_device *dev) | 65 | static int mipsnet_xmit(struct sk_buff *skb, struct net_device *dev) |
| 68 | { | 66 | { |
| 69 | pr_debug("%s:%s(): transmitting %d bytes\n", | 67 | pr_debug("%s:%s(): transmitting %d bytes\n", |
| 70 | dev->name, __FUNCTION__, skb->len); | 68 | dev->name, __FUNCTION__, skb->len); |
| 71 | 69 | ||
| 72 | /* Only one packet at a time. Once TXDONE interrupt is serviced, the | 70 | /* Only one packet at a time. Once TXDONE interrupt is serviced, the |
| 73 | * queue will be restarted. | 71 | * queue will be restarted. |
| @@ -83,7 +81,8 @@ static inline ssize_t mipsnet_get_fromdev(struct net_device *dev, size_t count) | |||
| 83 | struct sk_buff *skb; | 81 | struct sk_buff *skb; |
| 84 | size_t len = count; | 82 | size_t len = count; |
| 85 | 83 | ||
| 86 | if (!(skb = alloc_skb(len + 2, GFP_KERNEL))) { | 84 | skb = alloc_skb(len + 2, GFP_KERNEL); |
| 85 | if (!skb) { | ||
| 87 | dev->stats.rx_dropped++; | 86 | dev->stats.rx_dropped++; |
| 88 | return -ENOMEM; | 87 | return -ENOMEM; |
| 89 | } | 88 | } |
| @@ -96,7 +95,7 @@ static inline ssize_t mipsnet_get_fromdev(struct net_device *dev, size_t count) | |||
| 96 | skb->ip_summed = CHECKSUM_UNNECESSARY; | 95 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 97 | 96 | ||
| 98 | pr_debug("%s:%s(): pushing RXed data to kernel\n", | 97 | pr_debug("%s:%s(): pushing RXed data to kernel\n", |
| 99 | dev->name, __FUNCTION__); | 98 | dev->name, __FUNCTION__); |
| 100 | netif_rx(skb); | 99 | netif_rx(skb); |
| 101 | 100 | ||
| 102 | dev->stats.rx_packets++; | 101 | dev->stats.rx_packets++; |
| @@ -114,42 +113,44 @@ static irqreturn_t mipsnet_interrupt(int irq, void *dev_id) | |||
| 114 | 113 | ||
| 115 | if (irq == dev->irq) { | 114 | if (irq == dev->irq) { |
| 116 | pr_debug("%s:%s(): irq %d for device\n", | 115 | pr_debug("%s:%s(): irq %d for device\n", |
| 117 | dev->name, __FUNCTION__, irq); | 116 | dev->name, __FUNCTION__, irq); |
| 118 | 117 | ||
| 119 | retval = IRQ_HANDLED; | 118 | retval = IRQ_HANDLED; |
| 120 | 119 | ||
| 121 | interruptFlags = | 120 | interruptFlags = |
| 122 | inl(mipsnet_reg_address(dev, interruptControl)); | 121 | inl(mipsnet_reg_address(dev, interruptControl)); |
| 123 | pr_debug("%s:%s(): intCtl=0x%016llx\n", dev->name, | 122 | pr_debug("%s:%s(): intCtl=0x%016llx\n", dev->name, |
| 124 | __FUNCTION__, interruptFlags); | 123 | __FUNCTION__, interruptFlags); |
| 125 | 124 | ||
| 126 | if (interruptFlags & MIPSNET_INTCTL_TXDONE) { | 125 | if (interruptFlags & MIPSNET_INTCTL_TXDONE) { |
| 127 | pr_debug("%s:%s(): got TXDone\n", | 126 | pr_debug("%s:%s(): got TXDone\n", |
| 128 | dev->name, __FUNCTION__); | 127 | dev->name, __FUNCTION__); |
| 129 | outl(MIPSNET_INTCTL_TXDONE, | 128 | outl(MIPSNET_INTCTL_TXDONE, |
| 130 | mipsnet_reg_address(dev, interruptControl)); | 129 | mipsnet_reg_address(dev, interruptControl)); |
| 131 | // only one packet at a time, we are done. | 130 | /* only one packet at a time, we are done. */ |
| 132 | netif_wake_queue(dev); | 131 | netif_wake_queue(dev); |
| 133 | } else if (interruptFlags & MIPSNET_INTCTL_RXDONE) { | 132 | } else if (interruptFlags & MIPSNET_INTCTL_RXDONE) { |
| 134 | pr_debug("%s:%s(): got RX data\n", | 133 | pr_debug("%s:%s(): got RX data\n", |
| 135 | dev->name, __FUNCTION__); | 134 | dev->name, __FUNCTION__); |
| 136 | mipsnet_get_fromdev(dev, | 135 | mipsnet_get_fromdev(dev, |
| 137 | inl(mipsnet_reg_address(dev, rxDataCount))); | 136 | inl(mipsnet_reg_address(dev, rxDataCount))); |
| 138 | pr_debug("%s:%s(): clearing RX int\n", | 137 | pr_debug("%s:%s(): clearing RX int\n", |
| 139 | dev->name, __FUNCTION__); | 138 | dev->name, __FUNCTION__); |
| 140 | outl(MIPSNET_INTCTL_RXDONE, | 139 | outl(MIPSNET_INTCTL_RXDONE, |
| 141 | mipsnet_reg_address(dev, interruptControl)); | 140 | mipsnet_reg_address(dev, interruptControl)); |
| 142 | 141 | ||
| 143 | } else if (interruptFlags & MIPSNET_INTCTL_TESTBIT) { | 142 | } else if (interruptFlags & MIPSNET_INTCTL_TESTBIT) { |
| 144 | pr_debug("%s:%s(): got test interrupt\n", | 143 | pr_debug("%s:%s(): got test interrupt\n", |
| 145 | dev->name, __FUNCTION__); | 144 | dev->name, __FUNCTION__); |
| 146 | // TESTBIT is cleared on read. | 145 | /* |
| 147 | // And takes effect after a write with 0 | 146 | * TESTBIT is cleared on read. |
| 147 | * And takes effect after a write with 0 | ||
| 148 | */ | ||
| 148 | outl(0, mipsnet_reg_address(dev, interruptControl)); | 149 | outl(0, mipsnet_reg_address(dev, interruptControl)); |
| 149 | } else { | 150 | } else { |
| 150 | pr_debug("%s:%s(): no valid fags 0x%016llx\n", | 151 | pr_debug("%s:%s(): no valid fags 0x%016llx\n", |
| 151 | dev->name, __FUNCTION__, interruptFlags); | 152 | dev->name, __FUNCTION__, interruptFlags); |
| 152 | // Maybe shared IRQ, just ignore, no clearing. | 153 | /* Maybe shared IRQ, just ignore, no clearing. */ |
| 153 | retval = IRQ_NONE; | 154 | retval = IRQ_NONE; |
| 154 | } | 155 | } |
| 155 | 156 | ||
| @@ -159,7 +160,7 @@ static irqreturn_t mipsnet_interrupt(int irq, void *dev_id) | |||
| 159 | retval = IRQ_NONE; | 160 | retval = IRQ_NONE; |
| 160 | } | 161 | } |
| 161 | return retval; | 162 | return retval; |
| 162 | } //mipsnet_interrupt() | 163 | } |
| 163 | 164 | ||
| 164 | static int mipsnet_open(struct net_device *dev) | 165 | static int mipsnet_open(struct net_device *dev) |
| 165 | { | 166 | { |
| @@ -171,18 +172,18 @@ static int mipsnet_open(struct net_device *dev) | |||
| 171 | 172 | ||
| 172 | if (err) { | 173 | if (err) { |
| 173 | pr_debug("%s: %s(): can't get irq %d\n", | 174 | pr_debug("%s: %s(): can't get irq %d\n", |
| 174 | dev->name, __FUNCTION__, dev->irq); | 175 | dev->name, __FUNCTION__, dev->irq); |
| 175 | release_region(dev->base_addr, MIPSNET_IO_EXTENT); | 176 | release_region(dev->base_addr, MIPSNET_IO_EXTENT); |
| 176 | return err; | 177 | return err; |
| 177 | } | 178 | } |
| 178 | 179 | ||
| 179 | pr_debug("%s: %s(): got IO region at 0x%04lx and irq %d for dev.\n", | 180 | pr_debug("%s: %s(): got IO region at 0x%04lx and irq %d for dev.\n", |
| 180 | dev->name, __FUNCTION__, dev->base_addr, dev->irq); | 181 | dev->name, __FUNCTION__, dev->base_addr, dev->irq); |
| 181 | 182 | ||
| 182 | 183 | ||
| 183 | netif_start_queue(dev); | 184 | netif_start_queue(dev); |
| 184 | 185 | ||
| 185 | // test interrupt handler | 186 | /* test interrupt handler */ |
| 186 | outl(MIPSNET_INTCTL_TESTBIT, | 187 | outl(MIPSNET_INTCTL_TESTBIT, |
| 187 | mipsnet_reg_address(dev, interruptControl)); | 188 | mipsnet_reg_address(dev, interruptControl)); |
| 188 | 189 | ||
| @@ -199,8 +200,6 @@ static int mipsnet_close(struct net_device *dev) | |||
| 199 | 200 | ||
| 200 | static void mipsnet_set_mclist(struct net_device *dev) | 201 | static void mipsnet_set_mclist(struct net_device *dev) |
| 201 | { | 202 | { |
| 202 | // we don't do anything | ||
| 203 | return; | ||
| 204 | } | 203 | } |
| 205 | 204 | ||
| 206 | static int __init mipsnet_probe(struct device *dev) | 205 | static int __init mipsnet_probe(struct device *dev) |
| @@ -226,13 +225,13 @@ static int __init mipsnet_probe(struct device *dev) | |||
| 226 | */ | 225 | */ |
| 227 | netdev->base_addr = 0x4200; | 226 | netdev->base_addr = 0x4200; |
| 228 | netdev->irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_MB0 + | 227 | netdev->irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_MB0 + |
| 229 | inl(mipsnet_reg_address(netdev, interruptInfo)); | 228 | inl(mipsnet_reg_address(netdev, interruptInfo)); |
| 230 | 229 | ||
| 231 | // Get the io region now, get irq on open() | 230 | /* Get the io region now, get irq on open() */ |
| 232 | if (!request_region(netdev->base_addr, MIPSNET_IO_EXTENT, "mipsnet")) { | 231 | if (!request_region(netdev->base_addr, MIPSNET_IO_EXTENT, "mipsnet")) { |
| 233 | pr_debug("%s: %s(): IO region {start: 0x%04lux, len: %d} " | 232 | pr_debug("%s: %s(): IO region {start: 0x%04lux, len: %d} " |
| 234 | "for dev is not availble.\n", netdev->name, | 233 | "for dev is not availble.\n", netdev->name, |
| 235 | __FUNCTION__, netdev->base_addr, MIPSNET_IO_EXTENT); | 234 | __FUNCTION__, netdev->base_addr, MIPSNET_IO_EXTENT); |
| 236 | err = -EBUSY; | 235 | err = -EBUSY; |
| 237 | goto out_free_netdev; | 236 | goto out_free_netdev; |
| 238 | } | 237 | } |
