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sparc64: Convert PSYCHO PCI controller driver into a real driver. 

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-08-30 03:13:20 -07:00
parent 3822b50964
commit b20bfe41ba
2 changed files with 71 additions and 29 deletions
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3
arch/sparc64/kernel/pci.c
View File

@ -166,7 +166,6 @@ void pci_config_write32(u32 *addr, u32 val)
/* Probe for all PCI controllers in the system. */
extern void sabre_init(struct device_node *, const char *);
extern void psycho_init(struct device_node *, const char *);
extern void fire_pci_init(struct device_node *, const char *);
static struct {
@ -176,8 +175,6 @@ static struct {
{ "SUNW,sabre", sabre_init },
{ "pci108e,a000", sabre_init },
{ "pci108e,a001", sabre_init },
{ "SUNW,psycho", psycho_init },
{ "pci108e,8000", psycho_init },
{ "pciex108e,80f0", fire_pci_init },
};
#define PCI_NUM_CONTROLLER_TYPES ARRAY_SIZE(pci_controller_table)

97
arch/sparc64/kernel/pci_psycho.c
View File

@ -17,11 +17,13 @@
#include <asm/irq.h>
#include <asm/starfire.h>
#include <asm/prom.h>
#include <asm/oplib.h>
#include "pci_impl.h"
#include "iommu_common.h"
#define DRIVER_NAME "psycho"
#define PFX DRIVER_NAME ": "
/* All PSYCHO registers are 64-bits. The following accessor
* routines are how they are accessed. The REG parameter
* is a physical address.
@ -840,7 +842,7 @@ static int psycho_iommu_init(struct pci_pbm_info *pbm)
control = psycho_read(pbm->controller_regs + PSYCHO_IOMMU_CONTROL);
control |= PSYCHO_IOMMU_CTRL_DENAB;
psycho_write(pbm->controller_regs + PSYCHO_IOMMU_CONTROL, control);
for(i = 0; i < 16; i++) {
for (i = 0; i < 16; i++) {
psycho_write(pbm->controller_regs + PSYCHO_IOMMU_TAG + (i * 8UL), 0);
psycho_write(pbm->controller_regs + PSYCHO_IOMMU_DATA + (i * 8UL), 0);
}
@ -850,8 +852,10 @@ static int psycho_iommu_init(struct pci_pbm_info *pbm)
*/
err = iommu_table_init(iommu, IO_TSB_SIZE, 0xc0000000, 0xffffffff,
pbm->numa_node);
if (err)
if (err) {
printk(KERN_ERR PFX "iommu_table_init() fails\n");
return err;
}
psycho_write(pbm->controller_regs + PSYCHO_IOMMU_TSBBASE,
__pa(iommu->page_table));
@ -982,7 +986,6 @@ static void __init psycho_pbm_init(struct pci_controller_info *p,
pbm->numa_node = -1;
pbm->scan_bus = psycho_scan_bus;
pbm->pci_ops = &sun4u_pci_ops;
pbm->config_space_reg_bits = 8;
@ -1002,7 +1005,7 @@ static void __init psycho_pbm_init(struct pci_controller_info *p,
pbm->prom_node = dp;
pbm->name = dp->full_name;
printk("%s: PSYCHO PCI Bus Module ver[%x:%x]\n",
printk(KERN_INFO "%s: PSYCHO PCI Bus Module ver[%x:%x]\n",
pbm->name,
pbm->chip_version, pbm->chip_revision);
@ -1011,24 +1014,28 @@ static void __init psycho_pbm_init(struct pci_controller_info *p,
pci_get_pbm_props(pbm);
psycho_pbm_strbuf_init(pbm, is_pbm_a);
psycho_scan_bus(pbm);
}
#define PSYCHO_CONFIGSPACE 0x001000000UL
void __init psycho_init(struct device_node *dp, char *model_name)
static int __devinit psycho_probe(struct of_device *op,
const struct of_device_id *match)
{
struct linux_prom64_registers *pr_regs;
const struct linux_prom64_registers *pr_regs;
struct device_node *dp = op->node;
struct pci_controller_info *p;
struct pci_pbm_info *pbm;
struct iommu *iommu;
struct property *prop;
int is_pbm_a, err;
const u32 *p32;
u32 upa_portid;
int is_pbm_a;
upa_portid = 0xff;
prop = of_find_property(dp, "upa-portid", NULL);
if (prop)
upa_portid = *(u32 *) prop->value;
p32 = of_get_property(dp, "upa-portid", NULL);
if (p32)
upa_portid = *p32;
for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
struct pci_controller_info *p = pbm->parent;
@ -1036,24 +1043,34 @@ void __init psycho_init(struct device_node *dp, char *model_name)
if (p->pbm_A.portid == upa_portid) {
is_pbm_a = (p->pbm_A.prom_node == NULL);
psycho_pbm_init(p, dp, is_pbm_a);
return;
return 0;
}
}
err = -ENOMEM;
p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
if (!p)
goto fatal_memory_error;
if (!p) {
printk(KERN_ERR PFX "Cannot allocate controller info.\n");
goto out_free;
}
iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
if (!iommu)
goto fatal_memory_error;
if (!iommu) {
printk(KERN_ERR PFX "Cannot allocate PBM iommu.\n");
goto out_free;
}
p->pbm_A.iommu = p->pbm_B.iommu = iommu;
p->pbm_A.portid = upa_portid;
p->pbm_B.portid = upa_portid;
prop = of_find_property(dp, "reg", NULL);
pr_regs = prop->value;
pr_regs = of_get_property(dp, "reg", NULL);
err = -ENODEV;
if (!pr_regs) {
printk(KERN_ERR PFX "No reg property.\n");
goto out_free;
}
p->pbm_A.controller_regs = pr_regs[2].phys_addr;
p->pbm_B.controller_regs = pr_regs[2].phys_addr;
@ -1063,14 +1080,42 @@ void __init psycho_init(struct device_node *dp, char *model_name)
psycho_controller_hwinit(&p->pbm_A);
if (psycho_iommu_init(&p->pbm_A))
goto fatal_memory_error;
err = psycho_iommu_init(&p->pbm_A);
if (err)
goto out_free;
is_pbm_a = ((pr_regs[0].phys_addr & 0x6000) == 0x2000);
psycho_pbm_init(p, dp, is_pbm_a);
return;
fatal_memory_error:
prom_printf("PSYCHO: Fatal memory allocation error.\n");
prom_halt();
psycho_pbm_init(p, dp, is_pbm_a);
return 0;
out_free:
if (p) {
if (p->pbm_A.iommu)
kfree(p->pbm_A.iommu);
kfree(p);
}
return err;
}
static struct of_device_id psycho_match[] = {
{
.name = "pci",
.compatible = "pci108e,8000",
},
{},
};
static struct of_platform_driver psycho_driver = {
.name = DRIVER_NAME,
.match_table = psycho_match,
.probe = psycho_probe,
};
static int __init psycho_init(void)
{
return of_register_driver(&psycho_driver, &of_bus_type);
}
subsys_initcall(psycho_init);