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

[pandora-kernel.git] / arch / sparc64 / kernel / pci_psycho.c

diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index ef5fe29..4e8f87a 100644 (file)
--- a/arch/sparc64/kernel/pci_psycho.c
+++ b/arch/sparc64/kernel/pci_psycho.c
@@ -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();
+       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);