ptifddi.c
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- /* $Id: ptifddi.c,v 1.14 2001/04/14 01:12:04 davem Exp $
- * ptifddi.c: Network driver for Performance Technologies single-attach
- * and dual-attach FDDI sbus cards.
- *
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- */
- static char *version =
- "ptifddi.c:v1.0 10/Dec/96 David S. Miller (davem@caipfs.rutgers.edu)n";
- #include <linux/string.h>
- #include <linux/init.h>
- #include "ptifddi.h"
- #include "ptifddi_asm.h"
- #ifdef MODULE
- static struct ptifddi *root_pti_dev;
- #endif
- static inline void pti_reset(struct ptifddi *pp)
- {
- pp->reset = 1;
- }
- static inline void pti_unreset(struct ptifddi *pp)
- {
- pp->unreset = 1;
- }
- static inline void pti_load_code_base(struct dfddi_ram *rp, unsigned short addr)
- {
- rp->loader_addr = ((addr << 8) & 0xff00) | ((addr >> 8) & 0x00ff);
- }
- static inline void pti_clear_dpram(struct ptifddi *pp)
- {
- memset(pp->dpram, 0, DPRAM_SIZE);
- }
- #define CARD_TEST_TIMEOUT 100000
- static inline int pti_card_test(struct ptifddi *pp)
- {
- struct dfddi_ram *rp = pp->dpram;
- unsigned char *code = &rp->loader;
- unsigned char *status = (unsigned char *) rp;
- int clicks = CARD_TEST_TIMEOUT;
- /* Clear it out. */
- pti_clear_dpram(pp);
- /* Load test data. */
- for(i = 0; i < test_firmware_size; i++)
- code[i] = test_firmware[i];
- /* Tell card where to execute the code. */
- pti_load_code_base(pp, test_firmware_dev_addr);
- /* Clear test run status in dpram. */
- *status = 0;
- /* Reset single attach state machine before the test. */
- rp->reset = 1;
- /* Unreset, to get the test code running. */
- pti_unreset(pp);
- /* Wait for dpram status to become 5, else fail if we time out. */
- while(--clicks) {
- if(*status == 5) {
- pti_reset(pp);
- return 0;
- }
- udelay(20);
- }
- return 1;
- }
- static inline void pti_init_firmware_loader(struct ptifddi *pp)
- {
- struct dfddi_ram *rp = pp->dpram;
- int i;
- for(i = 0; i < firmware_loader_size; i++)
- rp->loader.loader_firmware[i] = firmware_loader[i];
- }
- static inline void pti_load_main_firmware(struct ptifddi *pp)
- {
- struct dfddi_ram *rp = pp->dpram;
- struct dpram_loader *lp = &rp.loader;
- int i;
- }
- static void pti_init_rings(struct ptifddi *pp, int from_irq)
- {
- }
- static int pti_init(struct ptifddi *pp, int from_irq)
- {
- }
- static void pti_is_not_so_happy(struct ptifddi *pp)
- {
- }
- static inline void pti_tx(struct ptifddi *pp, struct net_device *dev)
- {
- }
- static inline void myri_rx(struct ptifddi *pp, struct net_device *dev)
- {
- }
- static void pti_interrupt(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct net_device *dev = (struct net_device *) dev_id;
- struct ptifddi *pp = (struct ptifddi *) dev->priv;
- }
- static int pti_open(struct net_device *dev)
- {
- struct ptifddi *pp = (struct ptifddi *) dev->priv;
- return pti_init(pp, in_interrupt());
- }
- static int pti_close(struct net_device *dev)
- {
- struct ptifddi *pp = (struct ptifddi *) dev->priv;
- return 0;
- }
- static int pti_start_xmit(struct sk_buff *skb, struct net_device *dev)
- {
- struct ptifddi *pp = (struct ptifddi *) dev->priv;
- }
- static struct net_device_stats *pti_get_stats(struct net_device *dev)
- { return &(((struct ptifddi *)dev->priv)->enet_stats); }
- static void pti_set_multicast(struct net_device *dev)
- {
- }
- static inline int pti_fddi_init(struct net_device *dev, struct sbus_dev *sdev, int num)
- {
- static unsigned version_printed;
- struct ptifddi *pp;
- int i;
- dev = init_fddidev(0, sizeof(struct ptifddi));
- if(version_printed++ == 0)
- printk(version);
- /* Register 0 mapping contains DPRAM. */
- pp->dpram = (struct dfddi_ram *) sbus_ioremap(
- &sdep->resource[0], 0, sizeof(sturct dfddi_ram), "PTI FDDI DPRAM");
- if(!pp->dpram) {
- printk("ptiFDDI: Cannot map DPRAM I/O area.n");
- return -ENODEV;
- }
- /* Next, register 1 contains reset byte. */
- pp->reset = (unsigned char *) sbus_ioremap(
- &sdep->resource[1], 0, 1, "PTI FDDI RESET Byte");
- if(!pp->reset) {
- printk("ptiFDDI: Cannot map RESET byte.n");
- return -ENODEV;
- }
- /* Register 2 contains unreset byte. */
- pp->unreset = (unsigned char *) sbus_ioremap(
- &sdep->resource[2], 0, 1, "PTI FDDI UNRESET Byte");
- if(!pp->unreset) {
- printk("ptiFDDI: Cannot map UNRESET byte.n");
- return -ENODEV;
- }
- /* Reset the card. */
- pti_reset(pp);
- /* Run boot-up card tests. */
- i = pti_card_test(pp);
- if(i) {
- printk("ptiFDDI: Bootup card test fails.n");
- return -ENODEV;
- }
- /* Clear DPRAM, start afresh. */
- pti_clear_dpram(pp);
- /* Init the firmware loader. */
- pti_init_firmware_loader(pp);
- /* Now load main card FDDI firmware, using the loader. */
- pti_load_main_firmware(pp);
- }
- int __init ptifddi_sbus_probe(struct net_device *dev)
- {
- struct sbus_bus *bus;
- struct sbus_dev *sdev = 0;
- static int called;
- int cards = 0, v;
- if(called)
- return -ENODEV;
- called++;
- for_each_sbus(bus) {
- for_each_sbusdev(sdev, bus) {
- if(cards) dev = NULL;
- if(!strcmp(sdev->prom_name, "PTI,sbs600") ||
- !strcmp(sdev->prom_name, "DPV,fddid")) {
- cards++;
- DET(("Found PTI FDDI as %sn", sdev->prom_name));
- if((v = pti_fddi_init(dev, sdev, (cards - 1))))
- return v;
- }
- }
- }
- if(!cards)
- return -ENODEV;
- return 0;
- }
- #ifdef MODULE
- int
- init_module(void)
- {
- root_pti_dev = NULL;
- return ptifddi_sbus_probe(NULL);
- }
- void
- cleanup_module(void)
- {
- struct ptifddi *pp;
- /* No need to check MOD_IN_USE, as sys_delete_module() checks. */
- while (root_pti_dev) {
- pp = root_pti_dev->next_module;
- unregister_netdev(root_pti_dev->dev);
- kfree(root_pti_dev->dev);
- root_pti_dev = mp;
- }
- }
- #endif /* MODULE */