static int
aic7770_attach(device_t dev)
{
struct aic7770_identity *entry;
struct ahc_softc *ahc;
char *name;
int error;
entry = aic7770_find_device(eisa_get_id(dev));
if (entry == NULL)
return (ENXIO);
/*
* Allocate a softc for this card and
* set it up for attachment by our
* common detect routine.
*/
name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT);
if (name == NULL)
return (ENOMEM);
strcpy(name, device_get_nameunit(dev));
ahc = ahc_alloc(dev, name);
if (ahc == NULL)
return (ENOMEM);
ahc_set_unit(ahc, device_get_unit(dev));
/* Allocate a dmatag for our SCB DMA maps */
/* XXX Should be a child of the PCI bus dma tag */
error = aic_dma_tag_create(ahc, /*parent*/bus_get_dma_tag(dev),
/*alignment*/1, /*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
/*nsegments*/AHC_NSEG,
/*maxsegsz*/AHC_MAXTRANSFER_SIZE,
/*flags*/0,
&ahc->parent_dmat);
if (error != 0) {
printf("ahc_eisa_attach: Could not allocate DMA tag "
"- error %d\n", error);
ahc_free(ahc);
return (ENOMEM);
}
ahc->dev_softc = dev;
error = aic7770_config(ahc, entry, /*unused ioport arg*/0);
if (error != 0) {
ahc_free(ahc);
return (error);
}
ahc_attach(ahc);
return (0);
}
/*
* Perform an EISA probe of the address with the addition
* of a "priming" step. The 284X requires priming (a write
* to offset 0x80, the first EISA ID register) to ensure it
* is not mistaken as an EISA card. Once we have the ID,
* lookup the controller in the aic7770 table of supported
* devices.
*/
static struct aic7770_identity *
ahc_isa_find_device(bus_space_tag_t tag, bus_space_handle_t bsh) {
uint32_t id;
u_int id_size;
int i;
id = 0;
id_size = sizeof(id);
for (i = 0; i < id_size; i++) {
bus_space_write_1(tag, bsh, 0x80, 0x80 + i);
id |= bus_space_read_1(tag, bsh, 0x80 + i)
<< ((id_size - i - 1) * CHAR_BIT);
}
return (aic7770_find_device(id));
}
static int
aic7770_probe(device_t dev)
{
struct aic7770_identity *entry;
struct resource *regs;
uint32_t iobase;
bus_space_handle_t bsh;
bus_space_tag_t tag;
u_int irq;
u_int intdef;
u_int hcntrl;
int shared;
int rid;
int error;
entry = aic7770_find_device(eisa_get_id(dev));
if (entry == NULL)
return (ENXIO);
device_set_desc(dev, entry->name);
iobase = (eisa_get_slot(dev) * EISA_SLOT_SIZE) + AHC_EISA_SLOT_OFFSET;
eisa_add_iospace(dev, iobase, AHC_EISA_IOSIZE, RESVADDR_NONE);
rid = 0;
regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
if (regs == NULL) {
device_printf(dev, "Unable to map I/O space?!\n");
return ENOMEM;
}
tag = rman_get_bustag(regs);
bsh = rman_get_bushandle(regs);
error = 0;
/* Pause the card preseving the IRQ type */
hcntrl = bus_space_read_1(tag, bsh, HCNTRL) & IRQMS;
bus_space_write_1(tag, bsh, HCNTRL, hcntrl | PAUSE);
while ((bus_space_read_1(tag, bsh, HCNTRL) & PAUSE) == 0)
;
/* Make sure we have a valid interrupt vector */
intdef = bus_space_read_1(tag, bsh, INTDEF);
shared = (intdef & EDGE_TRIG) ? EISA_TRIGGER_EDGE : EISA_TRIGGER_LEVEL;
irq = intdef & VECTOR;
switch (irq) {
case 9:
case 10:
case 11:
case 12:
case 14:
case 15:
break;
default:
printf("aic7770 at slot %d: illegal irq setting %d\n",
eisa_get_slot(dev), intdef);
error = ENXIO;
}
if (error == 0)
eisa_add_intr(dev, irq, shared);
bus_release_resource(dev, SYS_RES_IOPORT, rid, regs);
return (error);
}
void
ahc_linux_eisa_init(void)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
struct eisa_device_id *eid;
struct aic7770_identity *id;
int i;
if (aic7xxx_probe_eisa_vl == 0)
return;
/*
* Linux requires the EISA IDs to be specified in
* the EISA ID string format. Perform the conversion
* and setup a table with a NUL terminal entry.
*/
aic7770_driver.id_table = malloc(sizeof(struct eisa_device_id) *
(ahc_num_aic7770_devs + 1),
M_DEVBUF, M_NOWAIT);
if (aic7770_driver.id_table == NULL)
return;
for (eid = (struct eisa_device_id *)aic7770_driver.id_table,
id = aic7770_ident_table, i = 0;
i < ahc_num_aic7770_devs; eid++, id++, i++) {
sprintf(eid->sig, "%c%c%c%03X%01X",
EISA_MFCTR_CHAR0(id->full_id),
EISA_MFCTR_CHAR1(id->full_id),
EISA_MFCTR_CHAR2(id->full_id),
EISA_PRODUCT_ID(id->full_id),
EISA_REVISION_ID(id->full_id));
eid->driver_data = i;
}
eid->sig[0] = 0;
eisa_driver_register(&aic7770_driver);
#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
struct aic7770_identity *entry;
u_int slot;
u_int eisaBase;
u_int i;
if (aic7xxx_probe_eisa_vl == 0)
return;
eisaBase = 0x1000 + AHC_EISA_SLOT_OFFSET;
for (slot = 1; slot < NUMSLOTS; eisaBase+=0x1000, slot++) {
uint32_t eisa_id;
size_t id_size;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
if (check_region(eisaBase, AHC_EISA_IOSIZE) != 0)
continue;
request_region(eisaBase, AHC_EISA_IOSIZE, "aic7xxx");
#else
if (request_region(eisaBase, AHC_EISA_IOSIZE, "aic7xxx") == 0)
continue;
#endif
eisa_id = 0;
id_size = sizeof(eisa_id);
for (i = 0; i < 4; i++) {
/* VLcards require priming*/
outb(0x80 + i, eisaBase + IDOFFSET);
eisa_id |= inb(eisaBase + IDOFFSET + i)
<< ((id_size-i-1) * 8);
}
release_region(eisaBase, AHC_EISA_IOSIZE);
if (eisa_id & 0x80000000)
continue; /* no EISA card in slot */
entry = aic7770_find_device(eisa_id);
if (entry != NULL)
aic7770_linux_config(entry, NULL, eisaBase);
}
#endif
}
