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

Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 70 insertions, 28 deletions

diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c
index 445f5882546f..c66c9bbc975a 100644
--- a/arch/sparc64/kernel/pci.c
+++ b/arch/sparc64/kernel/pci.c
@@ -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)
diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index ef5fe29202c2..4e8f87aad205 100644
--- 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);