-/* $Id: sbus.c,v 1.100 2002/01/24 15:36:24 davem Exp $
- * sbus.c: SBus support routines.
+/* sbus.c: SBus support routines.
*
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1995, 2006 David S. Miller (davem@davemloft.net)
*/
#include <linux/kernel.h>
#include <linux/slab.h>
-#include <linux/config.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <asm/sbus.h>
#include <asm/dma.h>
#include <asm/oplib.h>
+#include <asm/prom.h>
+#include <asm/of_device.h>
#include <asm/bpp.h>
#include <asm/irq.h>
-struct sbus_bus *sbus_root = NULL;
+struct sbus_bus *sbus_root;
-static struct linux_prom_irqs irqs[PROMINTR_MAX] __initdata = { { 0 } };
-#ifdef CONFIG_SPARC32
-static int interrupts[PROMINTR_MAX] __initdata = { 0 };
-#endif
-
-#ifdef CONFIG_PCI
-extern int pcic_present(void);
-#endif
-
-/* Perhaps when I figure out more about the iommu we'll put a
- * device registration routine here that probe_sbus() calls to
- * setup the iommu for each Sbus.
- */
-
-/* We call this for each SBus device, and fill the structure based
- * upon the prom device tree. We return the start of memory after
- * the things we have allocated.
- */
-
-/* #define DEBUG_FILL */
-
-static void __init fill_sbus_device(int prom_node, struct sbus_dev *sdev)
+static void __init fill_sbus_device(struct device_node *dp, struct sbus_dev *sdev)
{
- unsigned long address, base;
+ unsigned long base;
+ void *pval;
int len;
- sdev->prom_node = prom_node;
- prom_getstring(prom_node, "name",
- sdev->prom_name, sizeof(sdev->prom_name));
- address = prom_getint(prom_node, "address");
- len = prom_getproperty(prom_node, "reg",
- (char *) sdev->reg_addrs,
- sizeof(sdev->reg_addrs));
- if (len == -1) {
- sdev->num_registers = 0;
- goto no_regs;
- }
+ sdev->prom_node = dp->node;
+ strcpy(sdev->prom_name, dp->name);
- if (len % sizeof(struct linux_prom_registers)) {
- prom_printf("fill_sbus_device: proplen for regs of %s "
- " was %d, need multiple of %d\n",
- sdev->prom_name, len,
- (int) sizeof(struct linux_prom_registers));
- prom_halt();
- }
- if (len > (sizeof(struct linux_prom_registers) * PROMREG_MAX)) {
- prom_printf("fill_sbus_device: Too many register properties "
- "for device %s, len=%d\n",
- sdev->prom_name, len);
- prom_halt();
- }
- sdev->num_registers = len / sizeof(struct linux_prom_registers);
- sdev->ranges_applied = 0;
+ pval = of_get_property(dp, "reg", &len);
+ sdev->num_registers = 0;
+ if (pval) {
+ memcpy(sdev->reg_addrs, pval, len);
- base = (unsigned long) sdev->reg_addrs[0].phys_addr;
+ sdev->num_registers =
+ len / sizeof(struct linux_prom_registers);
- /* Compute the slot number. */
- if (base >= SUN_SBUS_BVADDR && sparc_cpu_model == sun4m) {
- sdev->slot = sbus_dev_slot(base);
- } else {
- sdev->slot = sdev->reg_addrs[0].which_io;
- }
+ base = (unsigned long) sdev->reg_addrs[0].phys_addr;
-no_regs:
- len = prom_getproperty(prom_node, "ranges",
- (char *)sdev->device_ranges,
- sizeof(sdev->device_ranges));
- if (len == -1) {
- sdev->num_device_ranges = 0;
- goto no_ranges;
- }
- if (len % sizeof(struct linux_prom_ranges)) {
- prom_printf("fill_sbus_device: proplen for ranges of %s "
- " was %d, need multiple of %d\n",
- sdev->prom_name, len,
- (int) sizeof(struct linux_prom_ranges));
- prom_halt();
- }
- if (len > (sizeof(struct linux_prom_ranges) * PROMREG_MAX)) {
- prom_printf("fill_sbus_device: Too many range properties "
- "for device %s, len=%d\n",
- sdev->prom_name, len);
- prom_halt();
+ /* Compute the slot number. */
+ if (base >= SUN_SBUS_BVADDR && sparc_cpu_model == sun4m)
+ sdev->slot = sbus_dev_slot(base);
+ else
+ sdev->slot = sdev->reg_addrs[0].which_io;
}
- sdev->num_device_ranges =
- len / sizeof(struct linux_prom_ranges);
-
-no_ranges:
- /* XXX Unfortunately, IRQ issues are very arch specific.
- * XXX Pull this crud out into an arch specific area
- * XXX at some point. -DaveM
- */
-#ifdef CONFIG_SPARC64
- len = prom_getproperty(prom_node, "interrupts",
- (char *) irqs, sizeof(irqs));
- if (len == -1 || len == 0) {
- sdev->irqs[0] = 0;
- sdev->num_irqs = 0;
- } else {
- unsigned int pri = irqs[0].pri;
-
- sdev->num_irqs = 1;
- if (pri < 0x20)
- pri += sdev->slot * 8;
-
- sdev->irqs[0] = sbus_build_irq(sdev->bus, pri);
+
+ pval = of_get_property(dp, "ranges", &len);
+ sdev->num_device_ranges = 0;
+ if (pval) {
+ memcpy(sdev->device_ranges, pval, len);
+ sdev->num_device_ranges =
+ len / sizeof(struct linux_prom_ranges);
}
-#endif /* CONFIG_SPARC64 */
-
-#ifdef CONFIG_SPARC32
- len = prom_getproperty(prom_node, "intr",
- (char *)irqs, sizeof(irqs));
- if (len != -1) {
- sdev->num_irqs = len / 8;
- if (sdev->num_irqs == 0) {
- sdev->irqs[0] = 0;
- } else if (sparc_cpu_model == sun4d) {
- extern unsigned int sun4d_build_irq(struct sbus_dev *sdev, int irq);
-
- for (len = 0; len < sdev->num_irqs; len++)
- sdev->irqs[len] = sun4d_build_irq(sdev, irqs[len].pri);
- } else {
- for (len = 0; len < sdev->num_irqs; len++)
- sdev->irqs[len] = irqs[len].pri;
- }
- } else {
- /* No "intr" node found-- check for "interrupts" node.
- * This node contains SBus interrupt levels, not IPLs
- * as in "intr", and no vector values. We convert
- * SBus interrupt levels to PILs (platform specific).
- */
- len = prom_getproperty(prom_node, "interrupts",
- (char *)interrupts, sizeof(interrupts));
- if (len == -1) {
- sdev->irqs[0] = 0;
- sdev->num_irqs = 0;
- } else {
- sdev->num_irqs = len / sizeof(int);
- for (len = 0; len < sdev->num_irqs; len++) {
- sdev->irqs[len] = sbint_to_irq(sdev, interrupts[len]);
- }
- }
- }
-#endif /* CONFIG_SPARC32 */
-}
-/* This routine gets called from whoever needs the sbus first, to scan
- * the SBus device tree. Currently it just prints out the devices
- * found on the bus and builds trees of SBUS structs and attached
- * devices.
- */
+ sbus_fill_device_irq(sdev);
-extern void iommu_init(int iommu_node, struct sbus_bus *sbus);
-extern void iounit_init(int sbi_node, int iounit_node, struct sbus_bus *sbus);
-void sun4_init(void);
-#ifdef CONFIG_SUN_AUXIO
-extern void auxio_probe(void);
-#endif
-
-static void __init sbus_do_child_siblings(int start_node,
- struct sbus_dev *child,
- struct sbus_dev *parent,
- struct sbus_bus *sbus)
-{
- struct sbus_dev *this_dev = child;
- int this_node = start_node;
-
- /* Child already filled in, just need to traverse siblings. */
- child->child = NULL;
- child->parent = parent;
- while((this_node = prom_getsibling(this_node)) != 0) {
- this_dev->next = kmalloc(sizeof(struct sbus_dev), GFP_ATOMIC);
- this_dev = this_dev->next;
- this_dev->next = NULL;
- this_dev->parent = parent;
-
- this_dev->bus = sbus;
- fill_sbus_device(this_node, this_dev);
-
- if(prom_getchild(this_node)) {
- this_dev->child = kmalloc(sizeof(struct sbus_dev),
- GFP_ATOMIC);
- this_dev->child->bus = sbus;
- this_dev->child->next = NULL;
- fill_sbus_device(prom_getchild(this_node), this_dev->child);
- sbus_do_child_siblings(prom_getchild(this_node),
- this_dev->child, this_dev, sbus);
- } else {
- this_dev->child = NULL;
- }
- }
-}
+ sdev->ofdev.node = dp;
+ if (sdev->parent)
+ sdev->ofdev.dev.parent = &sdev->parent->ofdev.dev;
+ else
+ sdev->ofdev.dev.parent = &sdev->bus->ofdev.dev;
+ sdev->ofdev.dev.bus = &sbus_bus_type;
+ sprintf(sdev->ofdev.dev.bus_id, "sbus[%08x]", dp->node);
-/*
- * XXX This functions appears to be a distorted version of
- * prom_sbus_ranges_init(), with all sun4d stuff cut away.
- * Ask DaveM what is going on here, how is sun4d supposed to work... XXX
- */
-/* added back sun4d patch from Thomas Bogendoerfer - should be OK (crn) */
+ if (of_device_register(&sdev->ofdev) != 0)
+ printk(KERN_DEBUG "sbus: device registration error for %s!\n",
+ dp->path_component_name);
+}
-static void __init sbus_bus_ranges_init(int parent_node, struct sbus_bus *sbus)
+static void __init sbus_bus_ranges_init(struct device_node *dp, struct sbus_bus *sbus)
{
+ void *pval;
int len;
- len = prom_getproperty(sbus->prom_node, "ranges",
- (char *) sbus->sbus_ranges,
- sizeof(sbus->sbus_ranges));
- if (len == -1 || len == 0) {
- sbus->num_sbus_ranges = 0;
- return;
- }
- sbus->num_sbus_ranges = len / sizeof(struct linux_prom_ranges);
-#ifdef CONFIG_SPARC32
- if (sparc_cpu_model == sun4d) {
- struct linux_prom_ranges iounit_ranges[PROMREG_MAX];
- int num_iounit_ranges;
-
- len = prom_getproperty(parent_node, "ranges",
- (char *) iounit_ranges,
- sizeof (iounit_ranges));
- if (len != -1) {
- num_iounit_ranges = (len/sizeof(struct linux_prom_ranges));
- prom_adjust_ranges (sbus->sbus_ranges, sbus->num_sbus_ranges, iounit_ranges, num_iounit_ranges);
- }
+ pval = of_get_property(dp, "ranges", &len);
+ sbus->num_sbus_ranges = 0;
+ if (pval) {
+ memcpy(sbus->sbus_ranges, pval, len);
+ sbus->num_sbus_ranges =
+ len / sizeof(struct linux_prom_ranges);
+
+ sbus_arch_bus_ranges_init(dp->parent, sbus);
}
-#endif
}
static void __init __apply_ranges_to_regs(struct linux_prom_ranges *ranges,
}
}
-extern void register_proc_sparc_ioport(void);
-extern void firetruck_init(void);
+/* We preserve the "probe order" of these bus and device lists to give
+ * the same ordering as the old code.
+ */
+static void __init sbus_insert(struct sbus_bus *sbus, struct sbus_bus **root)
+{
+ while (*root)
+ root = &(*root)->next;
+ *root = sbus;
+ sbus->next = NULL;
+}
-#ifdef CONFIG_SUN4
-extern void sun4_dvma_init(void);
-#endif
+static void __init sdev_insert(struct sbus_dev *sdev, struct sbus_dev **root)
+{
+ while (*root)
+ root = &(*root)->next;
+ *root = sdev;
+ sdev->next = NULL;
+}
-static int __init sbus_init(void)
+static void __init walk_children(struct device_node *dp, struct sbus_dev *parent, struct sbus_bus *sbus)
{
- int nd, this_sbus, sbus_devs, topnd, iommund;
- unsigned int sbus_clock;
- struct sbus_bus *sbus;
- struct sbus_dev *this_dev;
- int num_sbus = 0; /* How many did we find? */
+ dp = dp->child;
+ while (dp) {
+ struct sbus_dev *sdev;
-#ifdef CONFIG_SPARC32
- register_proc_sparc_ioport();
-#endif
+ sdev = kzalloc(sizeof(struct sbus_dev), GFP_ATOMIC);
+ if (sdev) {
+ sdev_insert(sdev, &parent->child);
-#ifdef CONFIG_SUN4
- sun4_dvma_init();
- return 0;
-#endif
-
- topnd = prom_getchild(prom_root_node);
-
- /* Finding the first sbus is a special case... */
- iommund = 0;
- if(sparc_cpu_model == sun4u) {
- nd = prom_searchsiblings(topnd, "sbus");
- if(nd == 0) {
-#ifdef CONFIG_PCI
- if (!pcic_present()) {
- prom_printf("Neither SBUS nor PCI found.\n");
- prom_halt();
- } else {
-#ifdef CONFIG_SPARC64
- firetruck_init();
-#endif
- }
- return 0;
-#else
- prom_printf("YEEE, UltraSparc sbus not found\n");
- prom_halt();
-#endif
- }
- } else if(sparc_cpu_model == sun4d) {
- if((iommund = prom_searchsiblings(topnd, "io-unit")) == 0 ||
- (nd = prom_getchild(iommund)) == 0 ||
- (nd = prom_searchsiblings(nd, "sbi")) == 0) {
- panic("sbi not found");
- }
- } else if((nd = prom_searchsiblings(topnd, "sbus")) == 0) {
- if((iommund = prom_searchsiblings(topnd, "iommu")) == 0 ||
- (nd = prom_getchild(iommund)) == 0 ||
- (nd = prom_searchsiblings(nd, "sbus")) == 0) {
-#ifdef CONFIG_PCI
- if (!pcic_present()) {
- prom_printf("Neither SBUS nor PCI found.\n");
- prom_halt();
- }
- return 0;
-#else
- /* No reason to run further - the data access trap will occur. */
- panic("sbus not found");
-#endif
+ sdev->bus = sbus;
+ sdev->parent = parent;
+
+ fill_sbus_device(dp, sdev);
+
+ walk_children(dp, sdev, sbus);
}
+ dp = dp->sibling;
}
+}
- /* Ok, we've found the first one, allocate first SBus struct
- * and place in chain.
- */
- sbus = sbus_root = kmalloc(sizeof(struct sbus_bus), GFP_ATOMIC);
- sbus->next = NULL;
- sbus->prom_node = nd;
- this_sbus = nd;
+static void __init build_one_sbus(struct device_node *dp, int num_sbus)
+{
+ struct sbus_bus *sbus;
+ unsigned int sbus_clock;
+ struct device_node *dev_dp;
- if(iommund && sparc_cpu_model != sun4u && sparc_cpu_model != sun4d)
- iommu_init(iommund, sbus);
+ sbus = kzalloc(sizeof(struct sbus_bus), GFP_ATOMIC);
+ if (!sbus)
+ return;
- /* Loop until we find no more SBUS's */
- while(this_sbus) {
-#ifdef CONFIG_SPARC64
- /* IOMMU hides inside SBUS/SYSIO prom node on Ultra. */
- if(sparc_cpu_model == sun4u) {
- extern void sbus_iommu_init(int prom_node, struct sbus_bus *sbus);
+ sbus_insert(sbus, &sbus_root);
+ sbus->prom_node = dp->node;
- sbus_iommu_init(this_sbus, sbus);
- }
-#endif /* CONFIG_SPARC64 */
-
-#ifdef CONFIG_SPARC32
- if (sparc_cpu_model == sun4d)
- iounit_init(this_sbus, iommund, sbus);
-#endif /* CONFIG_SPARC32 */
- printk("sbus%d: ", num_sbus);
- sbus_clock = prom_getint(this_sbus, "clock-frequency");
- if(sbus_clock == -1)
- sbus_clock = (25*1000*1000);
- printk("Clock %d.%d MHz\n", (int) ((sbus_clock/1000)/1000),
- (int) (((sbus_clock/1000)%1000 != 0) ?
- (((sbus_clock/1000)%1000) + 1000) : 0));
-
- prom_getstring(this_sbus, "name",
- sbus->prom_name, sizeof(sbus->prom_name));
- sbus->clock_freq = sbus_clock;
-#ifdef CONFIG_SPARC32
- if (sparc_cpu_model == sun4d) {
- sbus->devid = prom_getint(iommund, "device-id");
- sbus->board = prom_getint(iommund, "board#");
- }
-#endif
-
- sbus_bus_ranges_init(iommund, sbus);
-
- sbus_devs = prom_getchild(this_sbus);
- if (!sbus_devs) {
- sbus->devices = NULL;
- goto next_bus;
- }
+ sbus_setup_iommu(sbus, dp);
- sbus->devices = kmalloc(sizeof(struct sbus_dev), GFP_ATOMIC);
-
- this_dev = sbus->devices;
- this_dev->next = NULL;
-
- this_dev->bus = sbus;
- this_dev->parent = NULL;
- fill_sbus_device(sbus_devs, this_dev);
-
- /* Should we traverse for children? */
- if(prom_getchild(sbus_devs)) {
- /* Allocate device node */
- this_dev->child = kmalloc(sizeof(struct sbus_dev),
- GFP_ATOMIC);
- /* Fill it */
- this_dev->child->bus = sbus;
- this_dev->child->next = NULL;
- fill_sbus_device(prom_getchild(sbus_devs),
- this_dev->child);
- sbus_do_child_siblings(prom_getchild(sbus_devs),
- this_dev->child,
- this_dev,
- sbus);
- } else {
- this_dev->child = NULL;
- }
+ printk("sbus%d: ", num_sbus);
- while((sbus_devs = prom_getsibling(sbus_devs)) != 0) {
- /* Allocate device node */
- this_dev->next = kmalloc(sizeof(struct sbus_dev),
- GFP_ATOMIC);
- this_dev = this_dev->next;
- this_dev->next = NULL;
-
- /* Fill it */
- this_dev->bus = sbus;
- this_dev->parent = NULL;
- fill_sbus_device(sbus_devs, this_dev);
-
- /* Is there a child node hanging off of us? */
- if(prom_getchild(sbus_devs)) {
- /* Get new device struct */
- this_dev->child = kmalloc(sizeof(struct sbus_dev),
- GFP_ATOMIC);
- /* Fill it */
- this_dev->child->bus = sbus;
- this_dev->child->next = NULL;
- fill_sbus_device(prom_getchild(sbus_devs),
- this_dev->child);
- sbus_do_child_siblings(prom_getchild(sbus_devs),
- this_dev->child,
- this_dev,
- sbus);
- } else {
- this_dev->child = NULL;
- }
+ sbus_clock = of_getintprop_default(dp, "clock-frequency",
+ (25*1000*1000));
+ sbus->clock_freq = sbus_clock;
+
+ printk("Clock %d.%d MHz\n", (int) ((sbus_clock/1000)/1000),
+ (int) (((sbus_clock/1000)%1000 != 0) ?
+ (((sbus_clock/1000)%1000) + 1000) : 0));
+
+ strcpy(sbus->prom_name, dp->name);
+
+ sbus_setup_arch_props(sbus, dp);
+
+ sbus_bus_ranges_init(dp, sbus);
+
+ sbus->ofdev.node = dp;
+ sbus->ofdev.dev.parent = NULL;
+ sbus->ofdev.dev.bus = &sbus_bus_type;
+ sprintf(sbus->ofdev.dev.bus_id, "sbus%d", num_sbus);
+
+ if (of_device_register(&sbus->ofdev) != 0)
+ printk(KERN_DEBUG "sbus: device registration error for %s!\n",
+ sbus->ofdev.dev.bus_id);
+
+ dev_dp = dp->child;
+ while (dev_dp) {
+ struct sbus_dev *sdev;
+
+ sdev = kzalloc(sizeof(struct sbus_dev), GFP_ATOMIC);
+ if (sdev) {
+ sdev_insert(sdev, &sbus->devices);
+
+ sdev->bus = sbus;
+ sdev->parent = NULL;
+ fill_sbus_device(dev_dp, sdev);
+
+ walk_children(dev_dp, sdev, sbus);
}
+ dev_dp = dev_dp->sibling;
+ }
- /* Walk all devices and apply parent ranges. */
- sbus_fixup_all_regs(sbus->devices);
+ sbus_fixup_all_regs(sbus->devices);
- dvma_init(sbus);
- next_bus:
+ dvma_init(sbus);
+}
+
+static int __init sbus_init(void)
+{
+ struct device_node *dp;
+ const char *sbus_name = "sbus";
+ int num_sbus = 0;
+
+ if (sbus_arch_preinit())
+ return 0;
+
+ if (sparc_cpu_model == sun4d)
+ sbus_name = "sbi";
+
+ for_each_node_by_name(dp, sbus_name) {
+ build_one_sbus(dp, num_sbus);
num_sbus++;
- if(sparc_cpu_model == sun4u) {
- this_sbus = prom_getsibling(this_sbus);
- if(!this_sbus)
- break;
- this_sbus = prom_searchsiblings(this_sbus, "sbus");
- } else if(sparc_cpu_model == sun4d) {
- iommund = prom_getsibling(iommund);
- if(!iommund)
- break;
- iommund = prom_searchsiblings(iommund, "io-unit");
- if(!iommund)
- break;
- this_sbus = prom_searchsiblings(prom_getchild(iommund), "sbi");
- } else {
- this_sbus = prom_getsibling(this_sbus);
- if(!this_sbus)
- break;
- this_sbus = prom_searchsiblings(this_sbus, "sbus");
- }
- if(this_sbus) {
- sbus->next = kmalloc(sizeof(struct sbus_bus), GFP_ATOMIC);
- sbus = sbus->next;
- sbus->next = NULL;
- sbus->prom_node = this_sbus;
- } else {
- break;
- }
- } /* while(this_sbus) */
- if (sparc_cpu_model == sun4d) {
- extern void sun4d_init_sbi_irq(void);
- sun4d_init_sbi_irq();
- }
-
-#ifdef CONFIG_SPARC64
- if (sparc_cpu_model == sun4u) {
- firetruck_init();
}
-#endif
-#ifdef CONFIG_SUN_AUXIO
- if (sparc_cpu_model == sun4u)
- auxio_probe ();
-#endif
-#ifdef CONFIG_SPARC64
- if (sparc_cpu_model == sun4u) {
- extern void clock_probe(void);
-
- clock_probe();
- }
-#endif
+
+ sbus_arch_postinit();
return 0;
}
git://git.onelab.eu / linux-2.6.git / blobdiff