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Allow access to the HT I/O port space on the IBM CPC9X5 northbridge chips.

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MFC after:	2 weeks
This commit is contained in:
Nathan Whitehorn 2010-10-30 23:09:56 +00:00
parent 54c562081f
commit c04246f45a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=214575
1 changed files with 22 additions and 1 deletions
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23
sys/powerpc/powermac/cpcht.c
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@ -162,6 +162,7 @@ struct cpcht_softc {
vm_offset_t sc_data;
uint64_t sc_populated_slots;
struct rman sc_mem_rman;
struct rman sc_io_rman;
struct cpcht_irq htirq_map[128];
struct mtx htirq_mtx;
@ -177,6 +178,9 @@ static devclass_t cpcht_devclass;
DRIVER_MODULE(cpcht, nexus, cpcht_driver, cpcht_devclass, 0, 0);
#define CPCHT_IOPORT_BASE 0xf4000000UL /* Hardwired */
#define CPCHT_IOPORT_SIZE 0x00400000UL
#define HTAPIC_REQUEST_EOI 0x20
#define HTAPIC_TRIGGER_LEVEL 0x02
#define HTAPIC_MASK 0x01
@ -236,7 +240,14 @@ cpcht_attach(device_t dev)
sc->sc_mem_rman.rm_type = RMAN_ARRAY;
sc->sc_mem_rman.rm_descr = "CPCHT Device Memory";
error = rman_init(&sc->sc_mem_rman);
if (error) {
device_printf(dev, "rman_init() failed. error = %d\n", error);
return (error);
}
sc->sc_io_rman.rm_type = RMAN_ARRAY;
sc->sc_io_rman.rm_descr = "CPCHT I/O Memory";
error = rman_init(&sc->sc_io_rman);
if (error) {
device_printf(dev, "rman_init() failed. error = %d\n", error);
return (error);
@ -248,6 +259,9 @@ cpcht_attach(device_t dev)
* where we get the HT interrupts properties.
*/
/* I/O port mappings are usually not in the device tree */
rman_manage_region(&sc->sc_io_rman, 0, CPCHT_IOPORT_SIZE - 1);
bzero(sc->htirq_map, sizeof(sc->htirq_map));
mtx_init(&sc->htirq_mtx, "cpcht irq", NULL, MTX_DEF);
for (i = 0; i < 8; i++)
@ -299,6 +313,9 @@ cpcht_configure_htbridge(device_t dev, phandle_t child)
case OFW_PCI_PHYS_HI_SPACE_CONFIG:
break;
case OFW_PCI_PHYS_HI_SPACE_IO:
rman_manage_region(&sc->sc_io_rman, rp->pci_lo,
rp->pci_lo + rp->size_lo - 1);
break;
case OFW_PCI_PHYS_HI_SPACE_MEM32:
rman_manage_region(&sc->sc_mem_rman, rp->pci_lo,
rp->pci_lo + rp->size_lo - 1);
@ -507,8 +524,9 @@ cpcht_alloc_resource(device_t bus, device_t child, int type, int *rid,
switch (type) {
case SYS_RES_IOPORT:
end = min(end, start + count);
rm = &sc->sc_io_rman;
break;
/* FALLTHROUGH */
case SYS_RES_MEMORY:
rm = &sc->sc_mem_rman;
break;
@ -562,6 +580,9 @@ cpcht_activate_resource(device_t bus, device_t child, int type, int rid,
start = (vm_offset_t)rman_get_start(res);
if (type == SYS_RES_IOPORT)
start += CPCHT_IOPORT_BASE;
if (bootverbose)
printf("cpcht mapdev: start %zx, len %ld\n", start,
rman_get_size(res));