int
ppc_probe(device_t dev)
{
#ifdef __i386__
static short next_bios_ppc = 0;
#endif
struct ppc_data *ppc;
int error;
u_long port;
/*
* Allocate the ppc_data structure.
*/
ppc = DEVTOSOFTC(dev);
bzero(ppc, sizeof(struct ppc_data));
ppc->rid_irq = ppc->rid_drq = ppc->rid_ioport = 0;
ppc->res_irq = ppc->res_drq = ppc->res_ioport = 0;
/* retrieve ISA parameters */
error = bus_get_resource(dev, SYS_RES_IOPORT, 0, &port, NULL);
#ifdef __i386__
/*
* If port not specified, use bios list.
*/
if (error) {
if((next_bios_ppc < BIOS_MAX_PPC) &&
(*(BIOS_PORTS+next_bios_ppc) != 0) ) {
port = *(BIOS_PORTS+next_bios_ppc++);
if (bootverbose)
device_printf(dev, "parallel port found at 0x%x\n",
(int) port);
} else {
device_printf(dev, "parallel port not found.\n");
return ENXIO;
}
bus_set_resource(dev, SYS_RES_IOPORT, 0, port,
IO_LPTSIZE_EXTENDED);
}
#endif
#ifdef __alpha__
/*
* There isn't a bios list on alpha. Put it in the usual place.
*/
if (error) {
bus_set_resource(dev, SYS_RES_IOPORT, 0, 0x3bc,
IO_LPTSIZE_NORMAL);
}
#endif
/* IO port is mandatory */
/* Try "extended" IO port range...*/
ppc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT,
&ppc->rid_ioport, 0, ~0,
IO_LPTSIZE_EXTENDED, RF_ACTIVE);
if (ppc->res_ioport != 0) {
if (bootverbose)
device_printf(dev, "using extended I/O port range\n");
} else {
/* Failed? If so, then try the "normal" IO port range... */
ppc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT,
&ppc->rid_ioport, 0, ~0,
IO_LPTSIZE_NORMAL,
RF_ACTIVE);
if (ppc->res_ioport != 0) {
if (bootverbose)
device_printf(dev, "using normal I/O port range\n");
} else {
device_printf(dev, "cannot reserve I/O port range\n");
goto error;
}
}
ppc->ppc_base = rman_get_start(ppc->res_ioport);
ppc->bsh = rman_get_bushandle(ppc->res_ioport);
ppc->bst = rman_get_bustag(ppc->res_ioport);
ppc->ppc_flags = device_get_flags(dev);
if (!(ppc->ppc_flags & 0x20)) {
ppc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &ppc->rid_irq,
0ul, ~0ul, 1, RF_SHAREABLE);
ppc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, &ppc->rid_drq,
0ul, ~0ul, 1, RF_ACTIVE);
}
if (ppc->res_irq)
ppc->ppc_irq = rman_get_start(ppc->res_irq);
if (ppc->res_drq)
ppc->ppc_dmachan = rman_get_start(ppc->res_drq);
ppc->ppc_unit = device_get_unit(dev);
ppc->ppc_model = GENERIC;
ppc->ppc_mode = PPB_COMPATIBLE;
ppc->ppc_epp = (ppc->ppc_flags & 0x10) >> 4;
ppc->ppc_type = PPC_TYPE_GENERIC;
/*
* Try to detect the chipset and its mode.
*/
if (ppc_detect(ppc, ppc->ppc_flags & 0xf))
goto error;
return (0);
error:
if (ppc->res_irq != 0) {
bus_release_resource(dev, SYS_RES_IRQ, ppc->rid_irq,
ppc->res_irq);
}
if (ppc->res_ioport != 0) {
bus_deactivate_resource(dev, SYS_RES_IOPORT, ppc->rid_ioport,
ppc->res_ioport);
bus_release_resource(dev, SYS_RES_IOPORT, ppc->rid_ioport,
ppc->res_ioport);
}
if (ppc->res_drq != 0) {
bus_deactivate_resource(dev, SYS_RES_DRQ, ppc->rid_drq,
ppc->res_drq);
bus_release_resource(dev, SYS_RES_DRQ, ppc->rid_drq,
ppc->res_drq);
}
return (ENXIO);
}
int
ppc_probe(device_t dev, int rid)
{
#ifdef __i386__
static short next_bios_ppc = 0;
#ifdef PC98
unsigned int pc98_ieee_mode = 0x00;
unsigned int tmp;
#endif
#endif
struct ppc_data *ppc;
int error;
rman_res_t port;
/*
* Allocate the ppc_data structure.
*/
ppc = DEVTOSOFTC(dev);
bzero(ppc, sizeof(struct ppc_data));
ppc->rid_ioport = rid;
/* retrieve ISA parameters */
error = bus_get_resource(dev, SYS_RES_IOPORT, rid, &port, NULL);
#ifdef __i386__
/*
* If port not specified, use bios list.
*/
if (error) {
#ifdef PC98
if (next_bios_ppc == 0) {
/* Use default IEEE-1284 port of NEC PC-98x1 */
port = PC98_IEEE_1284_PORT;
next_bios_ppc += 1;
if (bootverbose)
device_printf(dev,
"parallel port found at 0x%lx\n", port);
}
#else
if ((next_bios_ppc < BIOS_MAX_PPC) &&
(*(BIOS_PORTS + next_bios_ppc) != 0)) {
port = *(BIOS_PORTS + next_bios_ppc++);
if (bootverbose)
device_printf(dev,
"parallel port found at 0x%lx\n", port);
} else {
device_printf(dev, "parallel port not found.\n");
return (ENXIO);
}
#endif /* PC98 */
bus_set_resource(dev, SYS_RES_IOPORT, rid, port,
IO_LPTSIZE_EXTENDED);
}
#endif
/* IO port is mandatory */
/* Try "extended" IO port range...*/
ppc->res_ioport = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT,
&ppc->rid_ioport,
IO_LPTSIZE_EXTENDED,
RF_ACTIVE);
if (ppc->res_ioport != 0) {
if (bootverbose)
device_printf(dev, "using extended I/O port range\n");
} else {
/* Failed? If so, then try the "normal" IO port range... */
ppc->res_ioport = bus_alloc_resource_anywhere(dev,
SYS_RES_IOPORT,
&ppc->rid_ioport,
IO_LPTSIZE_NORMAL,
RF_ACTIVE);
if (ppc->res_ioport != 0) {
if (bootverbose)
device_printf(dev, "using normal I/O port range\n");
} else {
device_printf(dev, "cannot reserve I/O port range\n");
goto error;
}
}
ppc->ppc_base = rman_get_start(ppc->res_ioport);
ppc->ppc_flags = device_get_flags(dev);
if (!(ppc->ppc_flags & 0x20)) {
ppc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&ppc->rid_irq,
RF_SHAREABLE);
ppc->res_drq = bus_alloc_resource_any(dev, SYS_RES_DRQ,
&ppc->rid_drq,
RF_ACTIVE);
}
if (ppc->res_irq)
ppc->ppc_irq = rman_get_start(ppc->res_irq);
if (ppc->res_drq)
ppc->ppc_dmachan = rman_get_start(ppc->res_drq);
ppc->ppc_dev = dev;
ppc->ppc_model = GENERIC;
ppc->ppc_mode = PPB_COMPATIBLE;
ppc->ppc_epp = (ppc->ppc_flags & 0x10) >> 4;
ppc->ppc_type = PPC_TYPE_GENERIC;
#if defined(__i386__) && defined(PC98)
/*
* IEEE STD 1284 Function Check and Enable
* for default IEEE-1284 port of NEC PC-98x1
*/
if (ppc->ppc_base == PC98_IEEE_1284_PORT &&
!(ppc->ppc_flags & PC98_IEEE_1284_DISABLE)) {
tmp = inb(ppc->ppc_base + PPC_1284_ENABLE);
pc98_ieee_mode = tmp;
if ((tmp & 0x10) == 0x10) {
outb(ppc->ppc_base + PPC_1284_ENABLE, tmp & ~0x10);
tmp = inb(ppc->ppc_base + PPC_1284_ENABLE);
if ((tmp & 0x10) == 0x10)
goto error;
} else {
outb(ppc->ppc_base + PPC_1284_ENABLE, tmp | 0x10);
tmp = inb(ppc->ppc_base + PPC_1284_ENABLE);
if ((tmp & 0x10) != 0x10)
goto error;
}
outb(ppc->ppc_base + PPC_1284_ENABLE, pc98_ieee_mode | 0x10);
}
#endif
/*
* Try to detect the chipset and its mode.
*/
if (ppc_detect(ppc, ppc->ppc_flags & 0xf))
goto error;
return (0);
error:
#if defined(__i386__) && defined(PC98)
if (ppc->ppc_base == PC98_IEEE_1284_PORT &&
!(ppc->ppc_flags & PC98_IEEE_1284_DISABLE)) {
outb(ppc->ppc_base + PPC_1284_ENABLE, pc98_ieee_mode);
}
#endif
if (ppc->res_irq != 0) {
bus_release_resource(dev, SYS_RES_IRQ, ppc->rid_irq,
ppc->res_irq);
}
if (ppc->res_ioport != 0) {
bus_release_resource(dev, SYS_RES_IOPORT, ppc->rid_ioport,
ppc->res_ioport);
}
if (ppc->res_drq != 0) {
bus_release_resource(dev, SYS_RES_DRQ, ppc->rid_drq,
ppc->res_drq);
}
return (ENXIO);
}
