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sparc64: Convert SUN4V 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 02:50:29 -07:00
parent 6d19c88f53
commit 3822b50964
2 changed files with 83 additions and 42 deletions
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2
arch/sparc64/kernel/pci.c
View File

@ -167,7 +167,6 @@ 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 sun4v_pci_init(struct device_node *, const char *);
extern void fire_pci_init(struct device_node *, const char *);
static struct {
@ -179,7 +178,6 @@ static struct {
{ "pci108e,a001", sabre_init },
{ "SUNW,psycho", psycho_init },
{ "pci108e,8000", psycho_init },
{ "SUNW,sun4v-pci", sun4v_pci_init },
{ "pciex108e,80f0", fire_pci_init },
};
#define PCI_NUM_CONTROLLER_TYPES ARRAY_SIZE(pci_controller_table)

123
arch/sparc64/kernel/pci_sun4v.c
View File

@ -13,12 +13,10 @@
#include <linux/irq.h>
#include <linux/msi.h>
#include <linux/log2.h>
#include <linux/of_device.h>
#include <asm/iommu.h>
#include <asm/irq.h>
#include <asm/upa.h>
#include <asm/pstate.h>
#include <asm/oplib.h>
#include <asm/hypervisor.h>
#include <asm/prom.h>
@ -27,6 +25,9 @@
#include "pci_sun4v.h"
#define DRIVER_NAME "pci_sun4v"
#define PFX DRIVER_NAME ": "
static unsigned long vpci_major = 1;
static unsigned long vpci_minor = 1;
@ -583,7 +584,7 @@ static unsigned long __init probe_existing_entries(struct pci_pbm_info *pbm,
return cnt;
}
static void __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
static int __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
{
struct iommu *iommu = pbm->iommu;
struct property *prop;
@ -603,9 +604,9 @@ static void __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
}
if ((vdma[0] | vdma[1]) & ~IO_PAGE_MASK) {
prom_printf("PCI-SUN4V: strange virtual-dma[%08x:%08x].\n",
vdma[0], vdma[1]);
prom_halt();
printk(KERN_ERR PFX "Strange virtual-dma[%08x:%08x].\n",
vdma[0], vdma[1]);
return -EINVAL;
};
dma_mask = (roundup_pow_of_two(vdma[1]) - 1UL);
@ -625,8 +626,8 @@ static void __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
sz = (sz + 7UL) & ~7UL;
iommu->arena.map = kzalloc(sz, GFP_KERNEL);
if (!iommu->arena.map) {
prom_printf("PCI_IOMMU: Error, kmalloc(arena.map) failed.\n");
prom_halt();
printk(KERN_ERR PFX "Error, kmalloc(arena.map) failed.\n");
return -ENOMEM;
}
iommu->arena.limit = num_tsb_entries;
@ -634,6 +635,8 @@ static void __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
if (sz)
printk("%s: Imported %lu TSB entries from OBP\n",
pbm->name, sz);
return 0;
}
#ifdef CONFIG_PCI_MSI
@ -890,10 +893,11 @@ static void pci_sun4v_msi_init(struct pci_pbm_info *pbm)
}
#endif /* !(CONFIG_PCI_MSI) */
static void __init pci_sun4v_pbm_init(struct pci_controller_info *p,
struct device_node *dp, u32 devhandle)
static int __init pci_sun4v_pbm_init(struct pci_controller_info *p,
struct device_node *dp, u32 devhandle)
{
struct pci_pbm_info *pbm;
int err;
if (devhandle & 0x40)
pbm = &p->pbm_B;
@ -905,7 +909,6 @@ static void __init pci_sun4v_pbm_init(struct pci_controller_info *p,
pbm->numa_node = of_node_to_nid(dp);
pbm->scan_bus = pci_sun4v_scan_bus;
pbm->pci_ops = &sun4v_pci_ops;
pbm->config_space_reg_bits = 12;
@ -924,50 +927,58 @@ static void __init pci_sun4v_pbm_init(struct pci_controller_info *p,
pci_determine_mem_io_space(pbm);
pci_get_pbm_props(pbm);
pci_sun4v_iommu_init(pbm);
err = pci_sun4v_iommu_init(pbm);
if (err)
return err;
pci_sun4v_msi_init(pbm);
pci_sun4v_scan_bus(pbm);
return 0;
}
void __init sun4v_pci_init(struct device_node *dp, char *model_name)
static int __devinit pci_sun4v_probe(struct of_device *op,
const struct of_device_id *match)
{
const struct linux_prom64_registers *regs;
static int hvapi_negotiated = 0;
struct pci_controller_info *p;
struct pci_pbm_info *pbm;
struct device_node *dp;
struct iommu *iommu;
struct property *prop;
struct linux_prom64_registers *regs;
u32 devhandle;
int i;
dp = op->node;
if (!hvapi_negotiated++) {
int err = sun4v_hvapi_register(HV_GRP_PCI,
vpci_major,
&vpci_minor);
if (err) {
prom_printf("SUN4V_PCI: Could not register hvapi, "
"err=%d\n", err);
prom_halt();
printk(KERN_ERR PFX "Could not register hvapi, "
"err=%d\n", err);
return err;
}
printk("SUN4V_PCI: Registered hvapi major[%lu] minor[%lu]\n",
printk(KERN_INFO PFX "Registered hvapi major[%lu] minor[%lu]\n",
vpci_major, vpci_minor);
dma_ops = &sun4v_dma_ops;
}
prop = of_find_property(dp, "reg", NULL);
if (!prop) {
prom_printf("SUN4V_PCI: Could not find config registers\n");
prom_halt();
regs = of_get_property(dp, "reg", NULL);
if (!regs) {
printk(KERN_ERR PFX "Could not find config registers\n");
return -ENODEV;
}
regs = prop->value;
devhandle = (regs->phys_addr >> 32UL) & 0x0fffffff;
for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
if (pbm->devhandle == (devhandle ^ 0x40)) {
pci_sun4v_pbm_init(pbm->parent, dp, devhandle);
return;
return pci_sun4v_pbm_init(pbm->parent, dp, devhandle);
}
}
@ -975,31 +986,63 @@ void __init sun4v_pci_init(struct device_node *dp, char *model_name)
unsigned long page = get_zeroed_page(GFP_ATOMIC);
if (!page)
goto fatal_memory_error;
return -ENOMEM;
per_cpu(iommu_batch, i).pglist = (u64 *) page;
}
p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
if (!p)
goto fatal_memory_error;
if (!p) {
printk(KERN_ERR PFX "Could not allocate pci_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 "Could not allocate pbm A iommu\n");
goto out_free;
}
p->pbm_A.iommu = iommu;
iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
if (!iommu)
goto fatal_memory_error;
if (!iommu) {
printk(KERN_ERR PFX "Could not allocate pbm B iommu\n");
goto out_free;
}
p->pbm_B.iommu = iommu;
pci_sun4v_pbm_init(p, dp, devhandle);
return;
return pci_sun4v_pbm_init(p, dp, devhandle);
fatal_memory_error:
prom_printf("SUN4V_PCI: Fatal memory allocation error.\n");
prom_halt();
out_free:
if (p) {
if (p->pbm_A.iommu)
kfree(p->pbm_A.iommu);
if (p->pbm_B.iommu)
kfree(p->pbm_B.iommu);
kfree(p);
}
return -ENOMEM;
}
static struct of_device_id pci_sun4v_match[] = {
{
.name = "pci",
.compatible = "SUNW,sun4v-pci",
},
{},
};
static struct of_platform_driver pci_sun4v_driver = {
.name = DRIVER_NAME,
.match_table = pci_sun4v_match,
.probe = pci_sun4v_probe,
};
static int __init pci_sun4v_init(void)
{
return of_register_driver(&pci_sun4v_driver, &of_bus_type);
}
subsys_initcall(pci_sun4v_init);