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844 lines
20 KiB
844 lines
20 KiB
/*
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* SGI IOC3 master driver and IRQ demuxer
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*
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* Copyright (c) 2005 Stanislaw Skowronek <skylark@linux-mips.org>
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* Heavily based on similar work by:
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* Brent Casavant <bcasavan@sgi.com> - IOC4 master driver
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* Pat Gefre <pfg@sgi.com> - IOC3 serial port IRQ demuxer
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*/
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#include <linux/errno.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/delay.h>
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#include <linux/ioc3.h>
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#include <linux/rwsem.h>
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#define IOC3_PCI_SIZE 0x100000
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static LIST_HEAD(ioc3_devices);
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static int ioc3_counter;
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static DECLARE_RWSEM(ioc3_devices_rwsem);
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static struct ioc3_submodule *ioc3_submodules[IOC3_MAX_SUBMODULES];
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static struct ioc3_submodule *ioc3_ethernet;
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static DEFINE_RWLOCK(ioc3_submodules_lock);
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/* NIC probing code */
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#define GPCR_MLAN_EN 0x00200000 /* enable MCR to pin 8 */
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static inline unsigned mcr_pack(unsigned pulse, unsigned sample)
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{
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return (pulse << 10) | (sample << 2);
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}
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static int nic_wait(struct ioc3_driver_data *idd)
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{
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unsigned mcr;
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do {
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mcr = readl(&idd->vma->mcr);
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} while (!(mcr & 2));
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return mcr & 1;
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}
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static int nic_reset(struct ioc3_driver_data *idd)
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{
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int presence;
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unsigned long flags;
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local_irq_save(flags);
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writel(mcr_pack(500, 65), &idd->vma->mcr);
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presence = nic_wait(idd);
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local_irq_restore(flags);
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udelay(500);
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return presence;
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}
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static int nic_read_bit(struct ioc3_driver_data *idd)
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{
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int result;
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unsigned long flags;
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local_irq_save(flags);
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writel(mcr_pack(6, 13), &idd->vma->mcr);
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result = nic_wait(idd);
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local_irq_restore(flags);
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udelay(500);
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return result;
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}
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static void nic_write_bit(struct ioc3_driver_data *idd, int bit)
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{
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if (bit)
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writel(mcr_pack(6, 110), &idd->vma->mcr);
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else
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writel(mcr_pack(80, 30), &idd->vma->mcr);
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nic_wait(idd);
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}
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static unsigned nic_read_byte(struct ioc3_driver_data *idd)
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{
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unsigned result = 0;
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int i;
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for (i = 0; i < 8; i++)
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result = (result >> 1) | (nic_read_bit(idd) << 7);
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return result;
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}
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static void nic_write_byte(struct ioc3_driver_data *idd, int byte)
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{
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int i, bit;
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for (i = 8; i; i--) {
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bit = byte & 1;
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byte >>= 1;
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nic_write_bit(idd, bit);
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}
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}
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static unsigned long
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nic_find(struct ioc3_driver_data *idd, int *last, unsigned long addr)
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{
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int a, b, index, disc;
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nic_reset(idd);
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/* Search ROM. */
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nic_write_byte(idd, 0xF0);
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/* Algorithm from ``Book of iButton Standards''. */
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for (index = 0, disc = 0; index < 64; index++) {
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a = nic_read_bit(idd);
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b = nic_read_bit(idd);
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if (a && b) {
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printk(KERN_WARNING "IOC3 NIC search failed.\n");
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*last = 0;
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return 0;
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}
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if (!a && !b) {
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if (index == *last) {
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addr |= 1UL << index;
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} else if (index > *last) {
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addr &= ~(1UL << index);
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disc = index;
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} else if ((addr & (1UL << index)) == 0)
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disc = index;
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nic_write_bit(idd, (addr>>index)&1);
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continue;
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} else {
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if (a)
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addr |= 1UL << index;
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else
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addr &= ~(1UL << index);
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nic_write_bit(idd, a);
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continue;
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}
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}
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*last = disc;
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return addr;
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}
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static void nic_addr(struct ioc3_driver_data *idd, unsigned long addr)
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{
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int index;
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nic_reset(idd);
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nic_write_byte(idd, 0xF0);
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for (index = 0; index < 64; index++) {
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nic_read_bit(idd);
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nic_read_bit(idd);
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nic_write_bit(idd, (addr>>index)&1);
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}
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}
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static void crc16_byte(unsigned int *crc, unsigned char db)
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{
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int i;
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for(i=0;i<8;i++) {
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*crc <<= 1;
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if((db^(*crc>>16)) & 1)
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*crc ^= 0x8005;
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db >>= 1;
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}
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*crc &= 0xFFFF;
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}
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static unsigned int crc16_area(unsigned char *dbs, int size, unsigned int crc)
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{
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while(size--)
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crc16_byte(&crc, *(dbs++));
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return crc;
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}
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static void crc8_byte(unsigned int *crc, unsigned char db)
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{
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int i,f;
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for(i=0;i<8;i++) {
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f = (*crc ^ db) & 1;
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*crc >>= 1;
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db >>= 1;
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if(f)
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*crc ^= 0x8c;
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}
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*crc &= 0xff;
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}
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static unsigned int crc8_addr(unsigned long addr)
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{
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int i;
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unsigned int crc = 0x00;
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for(i=0;i<8;i++)
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crc8_byte(&crc, addr>>(i<<3));
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return crc;
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}
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static void
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read_redir_page(struct ioc3_driver_data *idd, unsigned long addr, int page,
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unsigned char *redir, unsigned char *data)
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{
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int loops = 16, i;
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while(redir[page] != 0xFF) {
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page = redir[page]^0xFF;
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loops--;
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if(loops<0) {
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printk(KERN_ERR "IOC3: NIC circular redirection\n");
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return;
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}
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}
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loops = 3;
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while(loops>0) {
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nic_addr(idd, addr);
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nic_write_byte(idd, 0xF0);
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nic_write_byte(idd, (page << 5) & 0xE0);
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nic_write_byte(idd, (page >> 3) & 0x1F);
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for(i=0;i<0x20;i++)
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data[i] = nic_read_byte(idd);
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if(crc16_area(data, 0x20, 0x0000) == 0x800d)
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return;
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loops--;
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}
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printk(KERN_ERR "IOC3: CRC error in data page\n");
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for(i=0;i<0x20;i++)
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data[i] = 0x00;
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}
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static void
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read_redir_map(struct ioc3_driver_data *idd, unsigned long addr,
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unsigned char *redir)
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{
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int i,j,loops = 3,crc_ok;
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unsigned int crc;
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while(loops>0) {
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crc_ok = 1;
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nic_addr(idd, addr);
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nic_write_byte(idd, 0xAA);
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nic_write_byte(idd, 0x00);
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nic_write_byte(idd, 0x01);
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for(i=0;i<64;i+=8) {
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for(j=0;j<8;j++)
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redir[i+j] = nic_read_byte(idd);
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crc = crc16_area(redir+i, 8, (i==0)?0x8707:0x0000);
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crc16_byte(&crc, nic_read_byte(idd));
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crc16_byte(&crc, nic_read_byte(idd));
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if(crc != 0x800d)
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crc_ok = 0;
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}
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if(crc_ok)
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return;
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loops--;
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}
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printk(KERN_ERR "IOC3: CRC error in redirection page\n");
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for(i=0;i<64;i++)
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redir[i] = 0xFF;
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}
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static void read_nic(struct ioc3_driver_data *idd, unsigned long addr)
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{
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unsigned char redir[64];
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unsigned char data[64],part[32];
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int i,j;
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/* read redirections */
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read_redir_map(idd, addr, redir);
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/* read data pages */
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read_redir_page(idd, addr, 0, redir, data);
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read_redir_page(idd, addr, 1, redir, data+32);
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/* assemble the part # */
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j=0;
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for(i=0;i<19;i++)
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if(data[i+11] != ' ')
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part[j++] = data[i+11];
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for(i=0;i<6;i++)
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if(data[i+32] != ' ')
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part[j++] = data[i+32];
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part[j] = 0;
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/* skip Octane power supplies */
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if(!strncmp(part, "060-0035-", 9))
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return;
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if(!strncmp(part, "060-0038-", 9))
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return;
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strcpy(idd->nic_part, part);
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/* assemble the serial # */
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j=0;
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for(i=0;i<10;i++)
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if(data[i+1] != ' ')
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idd->nic_serial[j++] = data[i+1];
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idd->nic_serial[j] = 0;
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}
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static void read_mac(struct ioc3_driver_data *idd, unsigned long addr)
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{
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int i, loops = 3;
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unsigned char data[13];
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while(loops>0) {
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nic_addr(idd, addr);
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nic_write_byte(idd, 0xF0);
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nic_write_byte(idd, 0x00);
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nic_write_byte(idd, 0x00);
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nic_read_byte(idd);
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for(i=0;i<13;i++)
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data[i] = nic_read_byte(idd);
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if(crc16_area(data, 13, 0x0000) == 0x800d) {
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for(i=10;i>4;i--)
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idd->nic_mac[10-i] = data[i];
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return;
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}
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loops--;
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}
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printk(KERN_ERR "IOC3: CRC error in MAC address\n");
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for(i=0;i<6;i++)
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idd->nic_mac[i] = 0x00;
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}
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static void probe_nic(struct ioc3_driver_data *idd)
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{
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int save = 0, loops = 3;
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unsigned long first, addr;
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writel(GPCR_MLAN_EN, &idd->vma->gpcr_s);
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while(loops>0) {
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idd->nic_part[0] = 0;
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idd->nic_serial[0] = 0;
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addr = first = nic_find(idd, &save, 0);
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if(!first)
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return;
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while(1) {
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if(crc8_addr(addr))
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break;
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else {
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switch(addr & 0xFF) {
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case 0x0B:
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read_nic(idd, addr);
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break;
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case 0x09:
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case 0x89:
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case 0x91:
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read_mac(idd, addr);
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break;
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}
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}
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addr = nic_find(idd, &save, addr);
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if(addr == first)
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return;
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}
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loops--;
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}
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printk(KERN_ERR "IOC3: CRC error in NIC address\n");
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}
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/* Interrupts */
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static void write_ireg(struct ioc3_driver_data *idd, uint32_t val, int which)
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{
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unsigned long flags;
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spin_lock_irqsave(&idd->ir_lock, flags);
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switch (which) {
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case IOC3_W_IES:
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writel(val, &idd->vma->sio_ies);
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break;
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case IOC3_W_IEC:
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writel(val, &idd->vma->sio_iec);
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break;
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}
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spin_unlock_irqrestore(&idd->ir_lock, flags);
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}
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static inline uint32_t get_pending_intrs(struct ioc3_driver_data *idd)
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{
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unsigned long flag;
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uint32_t intrs = 0;
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spin_lock_irqsave(&idd->ir_lock, flag);
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intrs = readl(&idd->vma->sio_ir);
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intrs &= readl(&idd->vma->sio_ies);
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spin_unlock_irqrestore(&idd->ir_lock, flag);
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return intrs;
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}
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static irqreturn_t ioc3_intr_io(int irq, void *arg)
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{
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unsigned long flags;
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struct ioc3_driver_data *idd = arg;
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int handled = 1, id;
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unsigned int pending;
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read_lock_irqsave(&ioc3_submodules_lock, flags);
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if(idd->dual_irq && readb(&idd->vma->eisr)) {
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/* send Ethernet IRQ to the driver */
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if(ioc3_ethernet && idd->active[ioc3_ethernet->id] &&
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ioc3_ethernet->intr) {
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handled = handled && !ioc3_ethernet->intr(ioc3_ethernet,
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idd, 0);
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}
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}
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pending = get_pending_intrs(idd); /* look at the IO IRQs */
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for(id=0;id<IOC3_MAX_SUBMODULES;id++) {
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if(idd->active[id] && ioc3_submodules[id]
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&& (pending & ioc3_submodules[id]->irq_mask)
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&& ioc3_submodules[id]->intr) {
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write_ireg(idd, ioc3_submodules[id]->irq_mask,
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IOC3_W_IEC);
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if(!ioc3_submodules[id]->intr(ioc3_submodules[id],
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idd, pending & ioc3_submodules[id]->irq_mask))
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pending &= ~ioc3_submodules[id]->irq_mask;
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if (ioc3_submodules[id]->reset_mask)
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write_ireg(idd, ioc3_submodules[id]->irq_mask,
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IOC3_W_IES);
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}
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}
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read_unlock_irqrestore(&ioc3_submodules_lock, flags);
|
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if(pending) {
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printk(KERN_WARNING
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"IOC3: Pending IRQs 0x%08x discarded and disabled\n",pending);
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write_ireg(idd, pending, IOC3_W_IEC);
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handled = 1;
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}
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return handled?IRQ_HANDLED:IRQ_NONE;
|
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}
|
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|
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static irqreturn_t ioc3_intr_eth(int irq, void *arg)
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{
|
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unsigned long flags;
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struct ioc3_driver_data *idd = (struct ioc3_driver_data *)arg;
|
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int handled = 1;
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|
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if(!idd->dual_irq)
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return IRQ_NONE;
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read_lock_irqsave(&ioc3_submodules_lock, flags);
|
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if(ioc3_ethernet && idd->active[ioc3_ethernet->id]
|
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&& ioc3_ethernet->intr)
|
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handled = handled && !ioc3_ethernet->intr(ioc3_ethernet, idd, 0);
|
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read_unlock_irqrestore(&ioc3_submodules_lock, flags);
|
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return handled?IRQ_HANDLED:IRQ_NONE;
|
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}
|
|
|
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void ioc3_enable(struct ioc3_submodule *is,
|
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struct ioc3_driver_data *idd, unsigned int irqs)
|
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{
|
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write_ireg(idd, irqs & is->irq_mask, IOC3_W_IES);
|
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}
|
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|
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void ioc3_ack(struct ioc3_submodule *is, struct ioc3_driver_data *idd,
|
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unsigned int irqs)
|
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{
|
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writel(irqs & is->irq_mask, &idd->vma->sio_ir);
|
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}
|
|
|
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void ioc3_disable(struct ioc3_submodule *is,
|
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struct ioc3_driver_data *idd, unsigned int irqs)
|
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{
|
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write_ireg(idd, irqs & is->irq_mask, IOC3_W_IEC);
|
|
}
|
|
|
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void ioc3_gpcr_set(struct ioc3_driver_data *idd, unsigned int val)
|
|
{
|
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unsigned long flags;
|
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spin_lock_irqsave(&idd->gpio_lock, flags);
|
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writel(val, &idd->vma->gpcr_s);
|
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spin_unlock_irqrestore(&idd->gpio_lock, flags);
|
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}
|
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|
|
/* Keep it simple, stupid! */
|
|
static int find_slot(void **tab, int max)
|
|
{
|
|
int i;
|
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for(i=0;i<max;i++)
|
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if(!(tab[i]))
|
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return i;
|
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return -1;
|
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}
|
|
|
|
/* Register an IOC3 submodule */
|
|
int ioc3_register_submodule(struct ioc3_submodule *is)
|
|
{
|
|
struct ioc3_driver_data *idd;
|
|
int alloc_id;
|
|
unsigned long flags;
|
|
|
|
write_lock_irqsave(&ioc3_submodules_lock, flags);
|
|
alloc_id = find_slot((void **)ioc3_submodules, IOC3_MAX_SUBMODULES);
|
|
if(alloc_id != -1) {
|
|
ioc3_submodules[alloc_id] = is;
|
|
if(is->ethernet) {
|
|
if(ioc3_ethernet==NULL)
|
|
ioc3_ethernet=is;
|
|
else
|
|
printk(KERN_WARNING
|
|
"IOC3 Ethernet module already registered!\n");
|
|
}
|
|
}
|
|
write_unlock_irqrestore(&ioc3_submodules_lock, flags);
|
|
|
|
if(alloc_id == -1) {
|
|
printk(KERN_WARNING "Increase IOC3_MAX_SUBMODULES!\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
is->id=alloc_id;
|
|
|
|
/* Initialize submodule for each IOC3 */
|
|
if (!is->probe)
|
|
return 0;
|
|
|
|
down_read(&ioc3_devices_rwsem);
|
|
list_for_each_entry(idd, &ioc3_devices, list) {
|
|
/* set to 1 for IRQs in probe */
|
|
idd->active[alloc_id] = 1;
|
|
idd->active[alloc_id] = !is->probe(is, idd);
|
|
}
|
|
up_read(&ioc3_devices_rwsem);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Unregister an IOC3 submodule */
|
|
void ioc3_unregister_submodule(struct ioc3_submodule *is)
|
|
{
|
|
struct ioc3_driver_data *idd;
|
|
unsigned long flags;
|
|
|
|
write_lock_irqsave(&ioc3_submodules_lock, flags);
|
|
if(ioc3_submodules[is->id]==is)
|
|
ioc3_submodules[is->id]=NULL;
|
|
else
|
|
printk(KERN_WARNING
|
|
"IOC3 submodule %s has wrong ID.\n",is->name);
|
|
if(ioc3_ethernet==is)
|
|
ioc3_ethernet = NULL;
|
|
write_unlock_irqrestore(&ioc3_submodules_lock, flags);
|
|
|
|
/* Remove submodule for each IOC3 */
|
|
down_read(&ioc3_devices_rwsem);
|
|
list_for_each_entry(idd, &ioc3_devices, list)
|
|
if(idd->active[is->id]) {
|
|
if(is->remove)
|
|
if(is->remove(is, idd))
|
|
printk(KERN_WARNING
|
|
"%s: IOC3 submodule %s remove failed "
|
|
"for pci_dev %s.\n",
|
|
__FUNCTION__, module_name(is->owner),
|
|
pci_name(idd->pdev));
|
|
idd->active[is->id] = 0;
|
|
if(is->irq_mask)
|
|
write_ireg(idd, is->irq_mask, IOC3_W_IEC);
|
|
}
|
|
up_read(&ioc3_devices_rwsem);
|
|
}
|
|
|
|
/*********************
|
|
* Device management *
|
|
*********************/
|
|
|
|
static char *
|
|
ioc3_class_names[]={"unknown", "IP27 BaseIO", "IP30 system", "MENET 1/2/3",
|
|
"MENET 4", "CADduo", "Altix Serial"};
|
|
|
|
static int ioc3_class(struct ioc3_driver_data *idd)
|
|
{
|
|
int res = IOC3_CLASS_NONE;
|
|
/* NIC-based logic */
|
|
if(!strncmp(idd->nic_part, "030-0891-", 9))
|
|
res = IOC3_CLASS_BASE_IP30;
|
|
if(!strncmp(idd->nic_part, "030-1155-", 9))
|
|
res = IOC3_CLASS_CADDUO;
|
|
if(!strncmp(idd->nic_part, "030-1657-", 9))
|
|
res = IOC3_CLASS_SERIAL;
|
|
if(!strncmp(idd->nic_part, "030-1664-", 9))
|
|
res = IOC3_CLASS_SERIAL;
|
|
/* total random heuristics */
|
|
#ifdef CONFIG_SGI_IP27
|
|
if(!idd->nic_part[0])
|
|
res = IOC3_CLASS_BASE_IP27;
|
|
#endif
|
|
/* print educational message */
|
|
printk(KERN_INFO "IOC3 part: [%s], serial: [%s] => class %s\n",
|
|
idd->nic_part, idd->nic_serial, ioc3_class_names[res]);
|
|
return res;
|
|
}
|
|
/* Adds a new instance of an IOC3 card */
|
|
static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
|
|
{
|
|
struct ioc3_driver_data *idd;
|
|
uint32_t pcmd;
|
|
int ret, id;
|
|
|
|
/* Enable IOC3 and take ownership of it */
|
|
if ((ret = pci_enable_device(pdev))) {
|
|
printk(KERN_WARNING
|
|
"%s: Failed to enable IOC3 device for pci_dev %s.\n",
|
|
__FUNCTION__, pci_name(pdev));
|
|
goto out;
|
|
}
|
|
pci_set_master(pdev);
|
|
|
|
#ifdef USE_64BIT_DMA
|
|
ret = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
|
|
if (!ret) {
|
|
ret = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
|
|
if (ret < 0) {
|
|
printk(KERN_WARNING "%s: Unable to obtain 64 bit DMA "
|
|
"for consistent allocations\n",
|
|
__FUNCTION__);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Set up per-IOC3 data */
|
|
idd = kmalloc(sizeof(struct ioc3_driver_data), GFP_KERNEL);
|
|
if (!idd) {
|
|
printk(KERN_WARNING
|
|
"%s: Failed to allocate IOC3 data for pci_dev %s.\n",
|
|
__FUNCTION__, pci_name(pdev));
|
|
ret = -ENODEV;
|
|
goto out_idd;
|
|
}
|
|
memset(idd, 0, sizeof(struct ioc3_driver_data));
|
|
spin_lock_init(&idd->ir_lock);
|
|
spin_lock_init(&idd->gpio_lock);
|
|
idd->pdev = pdev;
|
|
|
|
/* Map all IOC3 registers. These are shared between subdevices
|
|
* so the main IOC3 module manages them.
|
|
*/
|
|
idd->pma = pci_resource_start(pdev, 0);
|
|
if (!idd->pma) {
|
|
printk(KERN_WARNING
|
|
"%s: Unable to find IOC3 resource "
|
|
"for pci_dev %s.\n",
|
|
__FUNCTION__, pci_name(pdev));
|
|
ret = -ENODEV;
|
|
goto out_pci;
|
|
}
|
|
if (!request_mem_region(idd->pma, IOC3_PCI_SIZE, "ioc3")) {
|
|
printk(KERN_WARNING
|
|
"%s: Unable to request IOC3 region "
|
|
"for pci_dev %s.\n",
|
|
__FUNCTION__, pci_name(pdev));
|
|
ret = -ENODEV;
|
|
goto out_pci;
|
|
}
|
|
idd->vma = ioremap(idd->pma, IOC3_PCI_SIZE);
|
|
if (!idd->vma) {
|
|
printk(KERN_WARNING
|
|
"%s: Unable to remap IOC3 region "
|
|
"for pci_dev %s.\n",
|
|
__FUNCTION__, pci_name(pdev));
|
|
ret = -ENODEV;
|
|
goto out_misc_region;
|
|
}
|
|
|
|
/* Track PCI-device specific data */
|
|
pci_set_drvdata(pdev, idd);
|
|
down_write(&ioc3_devices_rwsem);
|
|
list_add_tail(&idd->list, &ioc3_devices);
|
|
idd->id = ioc3_counter++;
|
|
up_write(&ioc3_devices_rwsem);
|
|
|
|
idd->gpdr_shadow = readl(&idd->vma->gpdr);
|
|
|
|
/* Read IOC3 NIC contents */
|
|
probe_nic(idd);
|
|
|
|
/* Detect IOC3 class */
|
|
idd->class = ioc3_class(idd);
|
|
|
|
/* Initialize IOC3 */
|
|
pci_read_config_dword(pdev, PCI_COMMAND, &pcmd);
|
|
pci_write_config_dword(pdev, PCI_COMMAND,
|
|
pcmd | PCI_COMMAND_MEMORY |
|
|
PCI_COMMAND_PARITY | PCI_COMMAND_SERR |
|
|
PCI_SCR_DROP_MODE_EN);
|
|
|
|
write_ireg(idd, ~0, IOC3_W_IEC);
|
|
writel(~0, &idd->vma->sio_ir);
|
|
|
|
/* Set up IRQs */
|
|
if(idd->class == IOC3_CLASS_BASE_IP30
|
|
|| idd->class == IOC3_CLASS_BASE_IP27) {
|
|
writel(0, &idd->vma->eier);
|
|
writel(~0, &idd->vma->eisr);
|
|
|
|
idd->dual_irq = 1;
|
|
if (!request_irq(pdev->irq, ioc3_intr_eth, IRQF_SHARED,
|
|
"ioc3-eth", (void *)idd)) {
|
|
idd->irq_eth = pdev->irq;
|
|
} else {
|
|
printk(KERN_WARNING
|
|
"%s : request_irq fails for IRQ 0x%x\n ",
|
|
__FUNCTION__, pdev->irq);
|
|
}
|
|
if (!request_irq(pdev->irq+2, ioc3_intr_io, IRQF_SHARED,
|
|
"ioc3-io", (void *)idd)) {
|
|
idd->irq_io = pdev->irq+2;
|
|
} else {
|
|
printk(KERN_WARNING
|
|
"%s : request_irq fails for IRQ 0x%x\n ",
|
|
__FUNCTION__, pdev->irq+2);
|
|
}
|
|
} else {
|
|
if (!request_irq(pdev->irq, ioc3_intr_io, IRQF_SHARED,
|
|
"ioc3", (void *)idd)) {
|
|
idd->irq_io = pdev->irq;
|
|
} else {
|
|
printk(KERN_WARNING
|
|
"%s : request_irq fails for IRQ 0x%x\n ",
|
|
__FUNCTION__, pdev->irq);
|
|
}
|
|
}
|
|
|
|
/* Add this IOC3 to all submodules */
|
|
for(id=0;id<IOC3_MAX_SUBMODULES;id++)
|
|
if(ioc3_submodules[id] && ioc3_submodules[id]->probe) {
|
|
idd->active[id] = 1;
|
|
idd->active[id] = !ioc3_submodules[id]->probe
|
|
(ioc3_submodules[id], idd);
|
|
}
|
|
|
|
printk(KERN_INFO "IOC3 Master Driver loaded for %s\n", pci_name(pdev));
|
|
|
|
return 0;
|
|
|
|
out_misc_region:
|
|
release_mem_region(idd->pma, IOC3_PCI_SIZE);
|
|
out_pci:
|
|
kfree(idd);
|
|
out_idd:
|
|
pci_disable_device(pdev);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
/* Removes a particular instance of an IOC3 card. */
|
|
static void ioc3_remove(struct pci_dev *pdev)
|
|
{
|
|
int id;
|
|
struct ioc3_driver_data *idd;
|
|
|
|
idd = pci_get_drvdata(pdev);
|
|
|
|
/* Remove this IOC3 from all submodules */
|
|
for(id=0;id<IOC3_MAX_SUBMODULES;id++)
|
|
if(idd->active[id]) {
|
|
if(ioc3_submodules[id] && ioc3_submodules[id]->remove)
|
|
if(ioc3_submodules[id]->remove(ioc3_submodules[id],
|
|
idd))
|
|
printk(KERN_WARNING
|
|
"%s: IOC3 submodule 0x%s remove failed "
|
|
"for pci_dev %s.\n",
|
|
__FUNCTION__,
|
|
module_name(ioc3_submodules[id]->owner),
|
|
pci_name(pdev));
|
|
idd->active[id] = 0;
|
|
}
|
|
|
|
/* Clear and disable all IRQs */
|
|
write_ireg(idd, ~0, IOC3_W_IEC);
|
|
writel(~0, &idd->vma->sio_ir);
|
|
|
|
/* Release resources */
|
|
free_irq(idd->irq_io, (void *)idd);
|
|
if(idd->dual_irq)
|
|
free_irq(idd->irq_eth, (void *)idd);
|
|
iounmap(idd->vma);
|
|
release_mem_region(idd->pma, IOC3_PCI_SIZE);
|
|
|
|
/* Disable IOC3 and relinquish */
|
|
pci_disable_device(pdev);
|
|
|
|
/* Remove and free driver data */
|
|
down_write(&ioc3_devices_rwsem);
|
|
list_del(&idd->list);
|
|
up_write(&ioc3_devices_rwsem);
|
|
kfree(idd);
|
|
}
|
|
|
|
static struct pci_device_id ioc3_id_table[] = {
|
|
{PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC3, PCI_ANY_ID, PCI_ANY_ID},
|
|
{0}
|
|
};
|
|
|
|
static struct pci_driver ioc3_driver = {
|
|
.name = "IOC3",
|
|
.id_table = ioc3_id_table,
|
|
.probe = ioc3_probe,
|
|
.remove = ioc3_remove,
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, ioc3_id_table);
|
|
|
|
/*********************
|
|
* Module management *
|
|
*********************/
|
|
|
|
/* Module load */
|
|
static int __devinit ioc3_init(void)
|
|
{
|
|
if (ia64_platform_is("sn2"))
|
|
return pci_register_driver(&ioc3_driver);
|
|
return 0;
|
|
}
|
|
|
|
/* Module unload */
|
|
static void __devexit ioc3_exit(void)
|
|
{
|
|
pci_unregister_driver(&ioc3_driver);
|
|
}
|
|
|
|
module_init(ioc3_init);
|
|
module_exit(ioc3_exit);
|
|
|
|
MODULE_AUTHOR("Stanislaw Skowronek <skylark@linux-mips.org>");
|
|
MODULE_DESCRIPTION("PCI driver for SGI IOC3");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
EXPORT_SYMBOL_GPL(ioc3_register_submodule);
|
|
EXPORT_SYMBOL_GPL(ioc3_unregister_submodule);
|
|
EXPORT_SYMBOL_GPL(ioc3_ack);
|
|
EXPORT_SYMBOL_GPL(ioc3_gpcr_set);
|
|
EXPORT_SYMBOL_GPL(ioc3_disable);
|
|
EXPORT_SYMBOL_GPL(ioc3_enable);
|
|
|