static void
aha_isa_identify(driver_t *driver, device_t parent)
{
int i;
bus_addr_t ioport;
struct aha_softc aha;
int rid;
struct resource *res;
device_t child;
/* Attempt to find an adapter */
for (i = 0; i < sizeof(aha_board_ports) / sizeof(aha_board_ports[0]);
i++) {
bzero(&aha, sizeof(aha));
ioport = aha_board_ports[i];
/*
* XXX Check to see if we have a hard-wired aha device at
* XXX this port, if so, skip. This should also cover the
* XXX case where we are run multiple times due to, eg,
* XXX kldload/kldunload.
*/
rid = 0;
res = bus_alloc_resource(parent, SYS_RES_IOPORT, &rid,
ioport, ioport, AHA_NREGS, RF_ACTIVE);
if (res == NULL)
continue;
aha_alloc(&aha, -1, rman_get_bustag(res),
rman_get_bushandle(res));
/* See if there is really a card present */
if (aha_probe(&aha) || aha_fetch_adapter_info(&aha))
goto not_this_one;
child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "aha", -1);
bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, AHA_NREGS);
/*
* Could query the board and set IRQ/DRQ, but probe does
* that.
*/
not_this_one:;
bus_release_resource(parent, SYS_RES_IOPORT, rid, res);
aha_free(&aha);
}
}
/*
* Check if the device can be found at the port given
*/
static int
aha_isa_probe(device_t dev)
{
/*
* find unit and check we have that many defined
*/
struct aha_softc *aha = device_get_softc(dev);
int error;
u_long port_start;
int port_rid;
int drq;
int irq;
config_data_t config_data;
aha->dev = dev;
/* Check isapnp ids */
if (ISA_PNP_PROBE(device_get_parent(dev), dev, aha_ids) == ENXIO)
return (ENXIO);
port_rid = 0;
aha->port = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &port_rid,
AHA_NREGS, RF_ACTIVE);
if (aha->port == NULL)
return (ENXIO);
port_start = rman_get_start(aha->port);
aha_alloc(aha);
/* See if there is really a card present */
if (aha_probe(aha) || aha_fetch_adapter_info(aha)) {
aha_free(aha);
bus_release_resource(dev, SYS_RES_IOPORT, port_rid, aha->port);
return (ENXIO);
}
/*
* Determine our IRQ, and DMA settings and
* export them to the configuration system.
*/
error = aha_cmd(aha, AOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
(uint8_t*)&config_data, sizeof(config_data), DEFAULT_CMD_TIMEOUT);
if (error != 0) {
device_printf(dev, "Could not determine IRQ or DMA "
"settings for adapter at %#jx. Failing probe\n",
(uintmax_t)port_start);
aha_free(aha);
bus_release_resource(dev, SYS_RES_IOPORT, port_rid,
aha->port);
return (ENXIO);
}
bus_release_resource(dev, SYS_RES_IOPORT, port_rid, aha->port);
aha->port = NULL;
switch (config_data.dma_chan) {
case DMA_CHAN_5:
drq = 5;
break;
case DMA_CHAN_6:
drq = 6;
break;
case DMA_CHAN_7:
drq = 7;
break;
default:
device_printf(dev, "Invalid DMA setting for adapter at %#jx.",
(uintmax_t)port_start);
return (ENXIO);
}
error = bus_set_resource(dev, SYS_RES_DRQ, 0, drq, 1);
if (error)
return error;
irq = ffs(config_data.irq) + 8;
error = bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1);
return (error);
}
/*
* Check if the device can be found at the port given
* and if so, set it up ready for further work
* as an argument, takes the isa_device structure from
* autoconf.c
*/
static int
aha_isa_probe(device_t dev)
{
/*
* find unit and check we have that many defined
*/
struct aha_softc **sc = device_get_softc(dev);
struct aha_softc *aha;
int port_index;
int max_port_index;
int error;
u_long port_start, port_count;
struct resource *port_res;
int port_rid;
int drq;
int irq;
aha = NULL;
/* Check isapnp ids */
if (ISA_PNP_PROBE(device_get_parent(dev), dev, aha_ids) == ENXIO)
return (ENXIO);
error = bus_get_resource(dev, SYS_RES_IOPORT, 0,
&port_start, &port_count);
if (error != 0)
port_start = 0;
/*
* Bound our board search if the user has
* specified an exact port.
*/
aha_find_probe_range(port_start, &port_index, &max_port_index);
if (port_index < 0)
return ENXIO;
/* Attempt to find an adapter */
for (;port_index <= max_port_index; port_index++) {
config_data_t config_data;
u_int ioport;
int error;
ioport = aha_iop_from_bio(port_index);
error = bus_set_resource(dev, SYS_RES_IOPORT, 0,
ioport, AHA_NREGS);
if (error)
return error;
port_rid = 0;
port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &port_rid,
0, ~0, AHA_NREGS, RF_ACTIVE);
if (!port_res)
continue;
/* Allocate a softc for use during probing */
aha = aha_alloc(device_get_unit(dev), rman_get_bustag(port_res),
rman_get_bushandle(port_res));
if (aha == NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, port_rid,
port_res);
break;
}
/* See if there is really a card present */
if (aha_probe(aha) || aha_fetch_adapter_info(aha)) {
aha_free(aha);
bus_release_resource(dev, SYS_RES_IOPORT, port_rid,
port_res);
continue;
}
/*
* Determine our IRQ, and DMA settings and
* export them to the configuration system.
*/
error = aha_cmd(aha, AOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
(u_int8_t*)&config_data, sizeof(config_data),
DEFAULT_CMD_TIMEOUT);
if (error != 0) {
printf("aha_isa_probe: Could not determine IRQ or DMA "
"settings for adapter at 0x%x. Failing probe\n",
ioport);
aha_free(aha);
bus_release_resource(dev, SYS_RES_IOPORT, port_rid,
port_res);
continue;
}
bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res);
switch (config_data.dma_chan) {
case DMA_CHAN_5:
drq = 5;
break;
case DMA_CHAN_6:
drq = 6;
break;
case DMA_CHAN_7:
drq = 7;
break;
default:
printf("aha_isa_probe: Invalid DMA setting "
"detected for adapter at 0x%x. "
"Failing probe\n", ioport);
return (ENXIO);
}
error = bus_set_resource(dev, SYS_RES_DRQ, 0, drq, 1);
if (error)
return error;
irq = ffs(config_data.irq) + 8;
error = bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1);
if (error)
return error;
*sc = aha;
aha_unit++;
return (0);
}
return (ENXIO);
}