diff options
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/ebus.c | 185 | ||||
| -rw-r--r-- | arch/sparc/kernel/ioport.c | 131 | ||||
| -rw-r--r-- | arch/sparc/kernel/of_device.c | 268 | ||||
| -rw-r--r-- | arch/sparc/kernel/pcic.c | 3 | ||||
| -rw-r--r-- | arch/sparc/kernel/prom.c | 474 |
6 files changed, 980 insertions, 83 deletions
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index 1b83e21841b..6616ee05c31 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -12,7 +12,7 @@ obj-y := entry.o wof.o wuf.o etrap.o rtrap.o traps.o $(IRQ_OBJS) \ sys_sparc.o sunos_asm.o systbls.o \ time.o windows.o cpu.o devices.o sclow.o \ tadpole.o tick14.o ptrace.o sys_solaris.o \ - unaligned.o muldiv.o semaphore.o + unaligned.o muldiv.o semaphore.o prom.o of_device.o obj-$(CONFIG_PCI) += pcic.o obj-$(CONFIG_SUN4) += sun4setup.o diff --git a/arch/sparc/kernel/ebus.c b/arch/sparc/kernel/ebus.c index 5c3529ceb5d..a7a4892956c 100644 --- a/arch/sparc/kernel/ebus.c +++ b/arch/sparc/kernel/ebus.c @@ -20,6 +20,7 @@ #include <asm/ebus.h> #include <asm/io.h> #include <asm/oplib.h> +#include <asm/prom.h> #include <asm/bpp.h> struct linux_ebus *ebus_chain = NULL; @@ -83,79 +84,81 @@ int __init ebus_blacklist_irq(char *name) return 0; } -void __init fill_ebus_child(int node, struct linux_prom_registers *preg, - struct linux_ebus_child *dev) +void __init fill_ebus_child(struct device_node *dp, + struct linux_ebus_child *dev) { - int regs[PROMREG_MAX]; - int irqs[PROMREG_MAX]; - char lbuf[128]; + int *regs; + int *irqs; int i, len; - dev->prom_node = node; - prom_getstring(node, "name", lbuf, sizeof(lbuf)); - strcpy(dev->prom_name, lbuf); - - len = prom_getproperty(node, "reg", (void *)regs, sizeof(regs)); - if (len == -1) len = 0; + dev->prom_node = dp; + regs = of_get_property(dp, "reg", &len); + if (!regs) + len = 0; dev->num_addrs = len / sizeof(regs[0]); for (i = 0; i < dev->num_addrs; i++) { if (regs[i] >= dev->parent->num_addrs) { prom_printf("UGH: property for %s was %d, need < %d\n", - dev->prom_name, len, dev->parent->num_addrs); + dev->prom_node->name, len, + dev->parent->num_addrs); panic(__FUNCTION__); } - dev->resource[i].start = dev->parent->resource[regs[i]].start; /* XXX resource */ + + /* XXX resource */ + dev->resource[i].start = + dev->parent->resource[regs[i]].start; } for (i = 0; i < PROMINTR_MAX; i++) dev->irqs[i] = PCI_IRQ_NONE; - if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_name)) != 0) { + if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) { dev->num_irqs = 1; - } else if ((len = prom_getproperty(node, "interrupts", - (char *)&irqs, sizeof(irqs))) == -1 || len == 0) { - dev->num_irqs = 0; - dev->irqs[0] = 0; - if (dev->parent->num_irqs != 0) { - dev->num_irqs = 1; - dev->irqs[0] = dev->parent->irqs[0]; -/* P3 */ /* printk("EBUS: dev %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */ - } } else { - dev->num_irqs = len / sizeof(irqs[0]); - if (irqs[0] == 0 || irqs[0] >= 8) { - /* - * XXX Zero is a valid pin number... - * This works as long as Ebus is not wired to INTA#. - */ - printk("EBUS: %s got bad irq %d from PROM\n", - dev->prom_name, irqs[0]); + irqs = of_get_property(dp, "interrupts", &len); + if (!irqs) { dev->num_irqs = 0; dev->irqs[0] = 0; + if (dev->parent->num_irqs != 0) { + dev->num_irqs = 1; + dev->irqs[0] = dev->parent->irqs[0]; + } } else { - dev->irqs[0] = pcic_pin_to_irq(irqs[0], dev->prom_name); + dev->num_irqs = len / sizeof(irqs[0]); + if (irqs[0] == 0 || irqs[0] >= 8) { + /* + * XXX Zero is a valid pin number... + * This works as long as Ebus is not wired + * to INTA#. + */ + printk("EBUS: %s got bad irq %d from PROM\n", + dev->prom_node->name, irqs[0]); + dev->num_irqs = 0; + dev->irqs[0] = 0; + } else { + dev->irqs[0] = + pcic_pin_to_irq(irqs[0], + dev->prom_node->name); + } } } } -void __init fill_ebus_device(int node, struct linux_ebus_device *dev) +void __init fill_ebus_device(struct device_node *dp, struct linux_ebus_device *dev) { - struct linux_prom_registers regs[PROMREG_MAX]; + struct linux_prom_registers *regs; struct linux_ebus_child *child; - int irqs[PROMINTR_MAX]; - char lbuf[128]; + int *irqs; int i, n, len; unsigned long baseaddr; - dev->prom_node = node; - prom_getstring(node, "name", lbuf, sizeof(lbuf)); - strcpy(dev->prom_name, lbuf); + dev->prom_node = dp; - len = prom_getproperty(node, "reg", (void *)regs, sizeof(regs)); + regs = of_get_property(dp, "reg", &len); if (len % sizeof(struct linux_prom_registers)) { prom_printf("UGH: proplen for %s was %d, need multiple of %d\n", - dev->prom_name, len, + dev->prom_node->name, len, (int)sizeof(struct linux_prom_registers)); panic(__FUNCTION__); } @@ -197,7 +200,7 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev) if ((baseaddr = (unsigned long) ioremap(baseaddr, regs[i].reg_size)) == 0) { panic("ebus: unable to remap dev %s", - dev->prom_name); + dev->prom_node->name); } } dev->resource[i].start = baseaddr; /* XXX Unaligned */ @@ -206,29 +209,43 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev) for (i = 0; i < PROMINTR_MAX; i++) dev->irqs[i] = PCI_IRQ_NONE; - if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_name)) != 0) { + if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) { dev->num_irqs = 1; - } else if ((len = prom_getproperty(node, "interrupts", - (char *)&irqs, sizeof(irqs))) == -1 || len == 0) { - dev->num_irqs = 0; - if ((dev->irqs[0] = dev->bus->self->irq) != 0) { - dev->num_irqs = 1; -/* P3 */ /* printk("EBUS: child %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */ - } } else { - dev->num_irqs = 1; /* dev->num_irqs = len / sizeof(irqs[0]); */ - if (irqs[0] == 0 || irqs[0] >= 8) { - /* See above for the parent. XXX */ - printk("EBUS: %s got bad irq %d from PROM\n", - dev->prom_name, irqs[0]); + irqs = of_get_property(dp, "interrupts", &len); + if (!irqs) { dev->num_irqs = 0; - dev->irqs[0] = 0; + if ((dev->irqs[0] = dev->bus->self->irq) != 0) { + dev->num_irqs = 1; +/* P3 */ /* printk("EBUS: child %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */ + } } else { - dev->irqs[0] = pcic_pin_to_irq(irqs[0], dev->prom_name); + dev->num_irqs = 1; /* dev->num_irqs = len / sizeof(irqs[0]); */ + if (irqs[0] == 0 || irqs[0] >= 8) { + /* See above for the parent. XXX */ + printk("EBUS: %s got bad irq %d from PROM\n", + dev->prom_node->name, irqs[0]); + dev->num_irqs = 0; + dev->irqs[0] = 0; + } else { + dev->irqs[0] = + pcic_pin_to_irq(irqs[0], + dev->prom_node->name); + } } } - if ((node = prom_getchild(node))) { + dev->ofdev.node = dp; + dev->ofdev.dev.parent = &dev->bus->ofdev.dev; + dev->ofdev.dev.bus = &ebus_bus_type; + strcpy(dev->ofdev.dev.bus_id, dp->path_component_name); + + /* Register with core */ + if (of_device_register(&dev->ofdev) != 0) + printk(KERN_DEBUG "ebus: device registration error for %s!\n", + dev->ofdev.dev.bus_id); + + if ((dp = dp->child) != NULL) { dev->children = (struct linux_ebus_child *) ebus_alloc(sizeof(struct linux_ebus_child)); @@ -236,9 +253,9 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev) child->next = NULL; child->parent = dev; child->bus = dev->bus; - fill_ebus_child(node, ®s[0], child); + fill_ebus_child(dp, child); - while ((node = prom_getsibling(node)) != 0) { + while ((dp = dp->sibling) != NULL) { child->next = (struct linux_ebus_child *) ebus_alloc(sizeof(struct linux_ebus_child)); @@ -246,51 +263,49 @@ void __init fill_ebus_device(int node, struct linux_ebus_device *dev) child->next = NULL; child->parent = dev; child->bus = dev->bus; - fill_ebus_child(node, ®s[0], child); + fill_ebus_child(dp, child); } } } void __init ebus_init(void) { - struct linux_prom_pci_registers regs[PROMREG_MAX]; + struct linux_prom_pci_registers *regs; struct linux_pbm_info *pbm; struct linux_ebus_device *dev; struct linux_ebus *ebus; struct ebus_system_entry *sp; struct pci_dev *pdev; struct pcidev_cookie *cookie; - char lbuf[128]; + struct device_node *dp; unsigned long addr, *base; unsigned short pci_command; - int nd, len, ebusnd; - int reg, nreg; + int len, reg, nreg; int num_ebus = 0; - prom_getstring(prom_root_node, "name", lbuf, sizeof(lbuf)); + dp = of_find_node_by_path("/"); for (sp = ebus_blacklist; sp->esname != NULL; sp++) { - if (strcmp(lbuf, sp->esname) == 0) { + if (strcmp(dp->name, sp->esname) == 0) { ebus_blackp = sp->ipt; break; } } pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, NULL); - if (!pdev) { + if (!pdev) return; - } + cookie = pdev->sysdata; - ebusnd = cookie->prom_node; + dp = cookie->prom_node; ebus_chain = ebus = (struct linux_ebus *) ebus_alloc(sizeof(struct linux_ebus)); ebus->next = NULL; - while (ebusnd) { + while (dp) { + struct device_node *nd; - prom_getstring(ebusnd, "name", lbuf, sizeof(lbuf)); - ebus->prom_node = ebusnd; - strcpy(ebus->prom_name, lbuf); + ebus->prom_node = dp; ebus->self = pdev; ebus->parent = pbm = cookie->pbm; @@ -299,9 +314,8 @@ void __init ebus_init(void) pci_command |= PCI_COMMAND_MASTER; pci_write_config_word(pdev, PCI_COMMAND, pci_command); - len = prom_getproperty(ebusnd, "reg", (void *)regs, - sizeof(regs)); - if (len == 0 || len == -1) { + regs = of_get_property(dp, "reg", &len); + if (!regs) { prom_printf("%s: can't find reg property\n", __FUNCTION__); prom_halt(); @@ -317,7 +331,18 @@ void __init ebus_init(void) *base++ = addr; } - nd = prom_getchild(ebusnd); + ebus->ofdev.node = dp; + ebus->ofdev.dev.parent = &pdev->dev; + ebus->ofdev.dev.bus = &ebus_bus_type; + strcpy(ebus->ofdev.dev.bus_id, dp->path_component_name); + + /* Register with core */ + if (of_device_register(&ebus->ofdev) != 0) + printk(KERN_DEBUG "ebus: device registration error for %s!\n", + ebus->ofdev.dev.bus_id); + + + nd = dp->child; if (!nd) goto next_ebus; @@ -330,7 +355,7 @@ void __init ebus_init(void) dev->bus = ebus; fill_ebus_device(nd, dev); - while ((nd = prom_getsibling(nd)) != 0) { + while ((nd = nd->sibling) != NULL) { dev->next = (struct linux_ebus_device *) ebus_alloc(sizeof(struct linux_ebus_device)); @@ -348,7 +373,7 @@ void __init ebus_init(void) break; cookie = pdev->sysdata; - ebusnd = cookie->prom_node; + dp = cookie->prom_node; ebus->next = (struct linux_ebus *) ebus_alloc(sizeof(struct linux_ebus)); diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index f9ff2973484..ae4c667c906 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -39,6 +39,8 @@ #include <asm/io.h> #include <asm/vaddrs.h> #include <asm/oplib.h> +#include <asm/prom.h> +#include <asm/sbus.h> #include <asm/page.h> #include <asm/pgalloc.h> #include <asm/dma.h> @@ -224,10 +226,54 @@ static void _sparc_free_io(struct resource *res) #ifdef CONFIG_SBUS -void sbus_set_sbus64(struct sbus_dev *sdev, int x) { +void sbus_set_sbus64(struct sbus_dev *sdev, int x) +{ printk("sbus_set_sbus64: unsupported\n"); } +extern unsigned int sun4d_build_irq(struct sbus_dev *sdev, int irq); +void __init sbus_fill_device_irq(struct sbus_dev *sdev) +{ + struct linux_prom_irqs irqs[PROMINTR_MAX]; + int len; + + len = prom_getproperty(sdev->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) { + 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 { + int interrupts[PROMINTR_MAX]; + + /* 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(sdev->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]); + } + } + } +} + /* * Allocate a chunk of memory suitable for DMA. * Typically devices use them for control blocks. @@ -414,6 +460,89 @@ void sbus_dma_sync_sg_for_device(struct sbus_dev *sdev, struct scatterlist *sg, { printk("sbus_dma_sync_sg_for_device: not implemented yet\n"); } + +/* Support code for sbus_init(). */ +/* + * 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) */ +void __init sbus_arch_bus_ranges_init(struct device_node *pn, struct sbus_bus *sbus) +{ + int parent_node = pn->node; + + if (sparc_cpu_model == sun4d) { + struct linux_prom_ranges iounit_ranges[PROMREG_MAX]; + int num_iounit_ranges, len; + + 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); + } + } +} + +void __init sbus_setup_iommu(struct sbus_bus *sbus, struct device_node *dp) +{ + struct device_node *parent = dp->parent; + + if (sparc_cpu_model != sun4d && + parent != NULL && + !strcmp(parent->name, "iommu")) { + extern void iommu_init(int iommu_node, struct sbus_bus *sbus); + + iommu_init(parent->node, sbus); + } + + if (sparc_cpu_model == sun4d) { + extern void iounit_init(int sbi_node, int iounit_node, + struct sbus_bus *sbus); + + iounit_init(dp->node, parent->node, sbus); + } +} + +void __init sbus_setup_arch_props(struct sbus_bus *sbus, struct device_node *dp) +{ + if (sparc_cpu_model == sun4d) { + struct device_node *parent = dp->parent; + + sbus->devid = of_getintprop_default(parent, "device-id", 0); + sbus->board = of_getintprop_default(parent, "board#", 0); + } +} + +int __init sbus_arch_preinit(void) +{ + extern void register_proc_sparc_ioport(void); + + register_proc_sparc_ioport(); + +#ifdef CONFIG_SUN4 + { + extern void sun4_dvma_init(void); + sun4_dvma_init(); + } + return 1; +#else + return 0; +#endif +} + +void __init sbus_arch_postinit(void) +{ + if (sparc_cpu_model == sun4d) { + extern void sun4d_init_sbi_irq(void); + sun4d_init_sbi_irq(); + } +} #endif /* CONFIG_SBUS */ #ifdef CONFIG_PCI diff --git a/arch/sparc/kernel/of_device.c b/arch/sparc/kernel/of_device.c new file mode 100644 index 00000000000..001b8673b4b --- /dev/null +++ b/arch/sparc/kernel/of_device.c @@ -0,0 +1,268 @@ +#include <linux/config.h> +#include <linux/string.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/slab.h> + +#include <asm/errno.h> +#include <asm/of_device.h> + +/** + * of_match_device - Tell if an of_device structure has a matching + * of_match structure + * @ids: array of of device match structures to search in + * @dev: the of device structure to match against + * + * Used by a driver to check whether an of_device present in the + * system is in its list of supported devices. + */ +const struct of_device_id *of_match_device(const struct of_device_id *matches, + const struct of_device *dev) +{ + if (!dev->node) + return NULL; + while (matches->name[0] || matches->type[0] || matches->compatible[0]) { + int match = 1; + if (matches->name[0]) + match &= dev->node->name + && !strcmp(matches->name, dev->node->name); + if (matches->type[0]) + match &= dev->node->type + && !strcmp(matches->type, dev->node->type); + if (matches->compatible[0]) + match &= of_device_is_compatible(dev->node, + matches->compatible); + if (match) + return matches; + matches++; + } + return NULL; +} + +static int of_platform_bus_match(struct device *dev, struct device_driver *drv) +{ + struct of_device * of_dev = to_of_device(dev); + struct of_platform_driver * of_drv = to_of_platform_driver(drv); + const struct of_device_id * matches = of_drv->match_table; + + if (!matches) + return 0; + + return of_match_device(matches, of_dev) != NULL; +} + +struct of_device *of_dev_get(struct of_device *dev) +{ + struct device *tmp; + + if (!dev) + return NULL; + tmp = get_device(&dev->dev); + if (tmp) + return to_of_device(tmp); + else + return NULL; +} + +void of_dev_put(struct of_device *dev) +{ + if (dev) + put_device(&dev->dev); +} + + +static int of_device_probe(struct device *dev) +{ + int error = -ENODEV; + struct of_platform_driver *drv; + struct of_device *of_dev; + const struct of_device_id *match; + + drv = to_of_platform_driver(dev->driver); + of_dev = to_of_device(dev); + + if (!drv->probe) + return error; + + of_dev_get(of_dev); + + match = of_match_device(drv->match_table, of_dev); + if (match) + error = drv->probe(of_dev, match); + if (error) + of_dev_put(of_dev); + + return error; +} + +static int of_device_remove(struct device *dev) +{ + struct of_device * of_dev = to_of_device(dev); + struct of_platform_driver * drv = to_of_platform_driver(dev->driver); + + if (dev->driver && drv->remove) + drv->remove(of_dev); + return 0; +} + +static int of_device_suspend(struct device *dev, pm_message_t state) +{ + struct of_device * of_dev = to_of_device(dev); + struct of_platform_driver * drv = to_of_platform_driver(dev->driver); + int error = 0; + + if (dev->driver && drv->suspend) + error = drv->suspend(of_dev, state); + return error; +} + +static int of_device_resume(struct device * dev) +{ + struct of_device * of_dev = to_of_device(dev); + struct of_platform_driver * drv = to_of_platform_driver(dev->driver); + int error = 0; + + if (dev->driver && drv->resume) + error = drv->resume(of_dev); + return error; +} + +#ifdef CONFIG_PCI +struct bus_type ebus_bus_type = { + .name = "ebus", + .match = of_platform_bus_match, + .probe = of_device_probe, + .remove = of_device_remove, + .suspend = of_device_suspend, + .resume = of_device_resume, +}; +#endif + +#ifdef CONFIG_SBUS +struct bus_type sbus_bus_type = { + .name = "sbus", + .match = of_platform_bus_match, + .probe = of_device_probe, + .remove = of_device_remove, + .suspend = of_device_suspend, + .resume = of_device_resume, +}; +#endif + +static int __init of_bus_driver_init(void) +{ + int err = 0; + +#ifdef CONFIG_PCI + if (!err) + err = bus_register(&ebus_bus_type); +#endif +#ifdef CONFIG_SBUS + if (!err) + err = bus_register(&sbus_bus_type); +#endif + return 0; +} + +postcore_initcall(of_bus_driver_init); + +int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus) +{ + /* initialize common driver fields */ + drv->driver.name = drv->name; + drv->driver.bus = bus; + + /* register with core */ + return driver_register(&drv->driver); +} + +void of_unregister_driver(struct of_platform_driver *drv) +{ + driver_unregister(&drv->driver); +} + + +static ssize_t dev_show_devspec(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct of_device *ofdev; + + ofdev = to_of_device(dev); + return sprintf(buf, "%s", ofdev->node->full_name); +} + +static DEVICE_ATTR(devspec, S_IRUGO, dev_show_devspec, NULL); + +/** + * of_release_dev - free an of device structure when all users of it are finished. + * @dev: device that's been disconnected + * + * Will be called only by the device core when all users of this of device are + * done. + */ +void of_release_dev(struct device *dev) +{ + struct of_device *ofdev; + + ofdev = to_of_device(dev); + + kfree(ofdev); +} + +int of_device_register(struct of_device *ofdev) +{ + int rc; + + BUG_ON(ofdev->node == NULL); + + rc = device_register(&ofdev->dev); + if (rc) + return rc; + + device_create_file(&ofdev->dev, &dev_attr_devspec); + + return 0; +} + +void of_device_unregister(struct of_device *ofdev) +{ + device_remove_file(&ofdev->dev, &dev_attr_devspec); + device_unregister(&ofdev->dev); +} + +struct of_device* of_platform_device_create(struct device_node *np, + const char *bus_id, + struct device *parent, + struct bus_type *bus) +{ + struct of_device *dev; + + dev = kmalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return NULL; + memset(dev, 0, sizeof(*dev)); + + dev->dev.parent = parent; + dev->dev.bus = bus; + dev->dev.release = of_release_dev; + + strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE); + + if (of_device_register(dev) != 0) { + kfree(dev); + return NULL; + } + + return dev; +} + +EXPORT_SYMBOL(of_match_device); +EXPORT_SYMBOL(of_register_driver); +EXPORT_SYMBOL(of_unregister_driver); +EXPORT_SYMBOL(of_device_register); +EXPORT_SYMBOL(of_device_unregister); +EXPORT_SYMBOL(of_dev_get); +EXPORT_SYMBOL(of_dev_put); +EXPORT_SYMBOL(of_platform_device_create); +EXPORT_SYMBOL(of_release_dev); diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c index bcdf5ad0f03..bcfdddd0418 100644 --- a/arch/sparc/kernel/pcic.c +++ b/arch/sparc/kernel/pcic.c @@ -31,6 +31,7 @@ #include <asm/irq.h> #include <asm/oplib.h> +#include <asm/prom.h> #include <asm/pcic.h> #include <asm/timer.h> #include <asm/uaccess.h> @@ -665,7 +666,7 @@ void __init pcibios_fixup_bus(struct pci_bus *bus) /* cookies */ pcp = pci_devcookie_alloc(); pcp->pbm = &pcic->pbm; - pcp->prom_node = node; + pcp->prom_node = of_find_node_by_phandle(node); dev->sysdata = pcp; /* fixing I/O to look like memory */ diff --git a/arch/sparc/kernel/prom.c b/arch/sparc/kernel/prom.c new file mode 100644 index 00000000000..63b2b9bd778 --- /dev/null +++ b/arch/sparc/kernel/prom.c @@ -0,0 +1,474 @@ +/* + * Procedures for creating, accessing and interpreting the device tree. + * + * Paul Mackerras August 1996. + * Copyright (C) 1996-2005 Paul Mackerras. + * + * Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner. + * {engebret|bergner}@us.ibm.com + * + * Adapted for sparc32 by David S. Miller davem@davemloft.net + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/bootmem.h> +#include <linux/module.h> + +#include <asm/prom.h> +#include <asm/oplib.h> + +static struct device_node *allnodes; + +int of_device_is_compatible(struct device_node *device, const char *compat) +{ + const char* cp; + int cplen, l; + + cp = (char *) of_get_property(device, "compatible", &cplen); + if (cp == NULL) + return 0; + while (cplen > 0) { + if (strncmp(cp, compat, strlen(compat)) == 0) + return 1; + l = strlen(cp) + 1; + cp += l; + cplen -= l; + } + + return 0; +} +EXPORT_SYMBOL(of_device_is_compatible); + +struct device_node *of_get_parent(const struct device_node *node) +{ + struct device_node *np; + + if (!node) + return NULL; + + np = node->parent; + + return np; +} +EXPORT_SYMBOL(of_get_parent); + +struct device_node *of_get_next_child(const struct device_node *node, + struct device_node *prev) +{ + struct device_node *next; + + next = prev ? prev->sibling : node->child; + for (; next != 0; next = next->sibling) { + break; + } + + return next; +} +EXPORT_SYMBOL(of_get_next_child); + +struct device_node *of_find_node_by_path(const char *path) +{ + struct device_node *np = allnodes; + + for (; np != 0; np = np->allnext) { + if (np->full_name != 0 && strcmp(np->full_name, path) == 0) + break; + } + + return np; +} +EXPORT_SYMBOL(of_find_node_by_path); + +struct device_node *of_find_node_by_phandle(phandle handle) +{ + struct device_node *np; + + for (np = allnodes; np != 0; np = np->allnext) + if (np->node == handle) + break; + + return np; +} +EXPORT_SYMBOL(of_find_node_by_phandle); + +struct device_node *of_find_node_by_name(struct device_node *from, + const char *name) +{ + struct device_node *np; + + np = from ? from->allnext : allnodes; + for (; np != NULL; np = np->allnext) + if (np->name != NULL && strcmp(np->name, name) == 0) + break; + + return np; +} +EXPORT_SYMBOL(of_find_node_by_name); + +struct device_node *of_find_node_by_type(struct device_node *from, + const char *type) +{ + struct device_node *np; + + np = from ? from->allnext : allnodes; + for (; np != 0; np = np->allnext) + if (np->type != 0 && strcmp(np->type, type) == 0) + break; + + return np; +} +EXPORT_SYMBOL(of_find_node_by_type); + +struct device_node *of_find_compatible_node(struct device_node *from, + const char *type, const char *compatible) +{ + struct device_node *np; + + np = from ? from->allnext : allnodes; + for (; np != 0; np = np->allnext) { + if (type != NULL + && !(np->type != 0 && strcmp(np->type, type) == 0)) + continue; + if (of_device_is_compatible(np, compatible)) + break; + } + + return np; +} +EXPORT_SYMBOL(of_find_compatible_node); + +struct property *of_find_property(struct device_node *np, const char *name, + int *lenp) +{ + struct property *pp; + + for (pp = np->properties; pp != 0; pp = pp->next) { + if (strcmp(pp->name, name) == 0) { + if (lenp != 0) + *lenp = pp->length; + break; + } + } + return pp; +} +EXPORT_SYMBOL(of_find_property); + +/* + * Find a property with a given name for a given node + * and return the value. + */ +void *of_get_property(struct device_node *np, const char *name, int *lenp) +{ + struct property *pp = of_find_property(np,name,lenp); + return pp ? pp->value : NULL; +} +EXPORT_SYMBOL(of_get_property); + +int of_getintprop_default(struct device_node *np, const char *name, int def) +{ + struct property *prop; + int len; + + prop = of_find_property(np, name, &len); + if (!prop || len != 4) + return def; + + return *(int *) prop->value; +} +EXPORT_SYMBOL(of_getintprop_default); + +static unsigned int prom_early_allocated; + +static void * __init prom_early_alloc(unsigned long size) +{ + void *ret; + + ret = __alloc_bootmem(size, SMP_CACHE_BYTES, 0UL); + if (ret != NULL) + memset(ret, 0, size); + + prom_early_allocated += size; + + return ret; +} + +static int is_root_node(const struct device_node *dp) +{ + if (!dp) + return 0; + + return (dp->parent == NULL); +} + +/* The following routines deal with the black magic of fully naming a + * node. + * + * Certain well known named nodes are just the simple name string. + * + * Actual devices have an address specifier appended to the base name + * string, like this "foo@addr". The "addr" can be in any number of + * formats, and the platform plus the type of the node determine the + * format and how it is constructed. + * + * For children of the ROOT node, the naming convention is fixed and + * determined by whether this is a sun4u or sun4v system. + * + * For children of other nodes, it is bus type specific. So + * we walk up the tree until we discover a "device_type" property + * we recognize and we go from there. + */ +static void __init sparc32_path_component(struct device_node *dp, char *tmp_buf) +{ + struct linux_prom_registers *regs; + struct property *rprop; + + rprop = of_find_property(dp, "reg", NULL); + if (!rprop) + return; + + regs = rprop->value; + sprintf(tmp_buf, "%s@%x,%x", + dp->name, + regs->which_io, regs->phys_addr); +} + +/* "name@slot,offset" */ +static void __init sbus_path_component(struct device_node *dp, char *tmp_buf) +{ + struct linux_prom_registers *regs; + struct property *prop; + + prop = of_find_property(dp, "reg", NULL); + if (!prop) + return; + + regs = prop->value; + sprintf(tmp_buf, "%s@%x,%x", + dp->name, + regs->which_io, + regs->phys_addr); +} + +/* "name@devnum[,func]" */ +static void __init pci_path_component(struct device_node *dp, char *tmp_buf) +{ + struct linux_prom_pci_registers *regs; + struct property *prop; + unsigned int devfn; + + prop = of_find_property(dp, "reg", NULL); + if (!prop) + return; + + regs = prop->value; + devfn = (regs->phys_hi >> 8) & 0xff; + if (devfn & 0x07) { + sprintf(tmp_buf, "%s@%x,%x", + dp->name, + devfn >> 3, + devfn & 0x07); + } else { + sprintf(tmp_buf, "%s@%x", + dp->name, + devfn >> 3); + } +} + +/* "name@addrhi,addrlo" */ +static void __init ebus_path_component(struct device_node *dp, char *tmp_buf) +{ + struct linux_prom_registers *regs; + struct property *prop; + + prop = of_find_property(dp, "reg", NULL); + if (!prop) + return; + + regs = prop->value; + + sprintf(tmp_buf, "%s@%x,%x", + dp->name, + regs->which_io, regs->phys_addr); +} + +static void __init __build_path_component(struct device_node *dp, char *tmp_buf) +{ + struct device_node *parent = dp->parent; + + if (parent != NULL) { + if (!strcmp(parent->type, "pci") || + !strcmp(parent->type, "pciex")) + return pci_path_component(dp, tmp_buf); + if (!strcmp(parent->type, "sbus")) + return sbus_path_component(dp, tmp_buf); + if (!strcmp(parent->type, "ebus")) + return ebus_path_component(dp, tmp_buf); + + /* "isa" is handled with platform naming */ + } + + /* Use platform naming convention. */ + return sparc32_path_component(dp, tmp_buf); +} + +static char * __init build_path_component(struct device_node *dp) +{ + char tmp_buf[64], *n; + + tmp_buf[0] = '\0'; + __build_path_component(dp, tmp_buf); + if (tmp_buf[0] == '\0') + strcpy(tmp_buf, dp->name); + + n = prom_early_alloc(strlen(tmp_buf) + 1); + strcpy(n, tmp_buf); + + return n; +} + +static char * __init build_full_name(struct device_node *dp) +{ + int len, ourlen, plen; + char *n; + + plen = strlen(dp->parent->full_name); + ourlen = strlen(dp->path_component_name); + len = ourlen + plen + 2; + + n = prom_early_alloc(len); + strcpy(n, dp->parent->full_name); + if (!is_root_node(dp->parent)) { + strcpy(n + plen, "/"); + plen++; + } + strcpy(n + plen, dp->path_component_name); + + return n; +} + +static struct property * __init build_one_prop(phandle node, char *prev) +{ + static struct property *tmp = NULL; + struct property *p; + int len; + + if (tmp) { + p = tmp; + memset(p, 0, sizeof(*p) + 32); + tmp = NULL; + } else + p = prom_early_alloc(sizeof(struct property) + 32); + + p->name = (char *) (p + 1); + if (prev == NULL) { + prom_firstprop(node, p->name); + } else { + prom_nextprop(node, prev, p->name); + } + if (strlen(p->name) == 0) { + tmp = p; + return NULL; + } + p->length = prom_getproplen(node, p->name); + if (p->length <= 0) { + p->length = 0; + } else { + p->value = prom_early_alloc(p->length); + len = prom_getproperty(node, p->name, p->value, p->length); + } + return p; +} + +static struct property * __init build_prop_list(phandle node) +{ + struct property *head, *tail; + + head = tail = build_one_prop(node, NULL); + while(tail) { + tail->next = build_one_prop(node, tail->name); + tail = tail->next; + } + + return head; +} + +static char * __init get_one_property(phandle node, char *name) +{ + char *buf = "<NULL>"; + int len; + + len = prom_getproplen(node, name); + if (len > 0) { + buf = prom_early_alloc(len); + len = prom_getproperty(node, name, buf, len); + } + + return buf; +} + +static struct device_node * __init create_node(phandle node) +{ + struct device_node *dp; + + if (!node) + return NULL; + + dp = prom_early_alloc(sizeof(*dp)); + + kref_init(&dp->kref); + + dp->name = get_one_property(node, "name"); + dp->type = get_one_property(node, "device_type"); + dp->node = node; + + /* Build interrupts later... */ + + dp->properties = build_prop_list(node); + + return dp; +} + +static struct device_node * __init build_tree(struct device_node *parent, phandle node, struct device_node ***nextp) +{ + struct device_node *dp; + + dp = create_node(node); + if (dp) { + *(*nextp) = dp; + *nextp = &dp->allnext; + + dp->parent = parent; + dp->path_component_name = build_path_component(dp); + dp->full_name = build_full_name(dp); + + dp->child = build_tree(dp, prom_getchild(node), nextp); + + dp->sibling = build_tree(parent, prom_getsibling(node), nextp); + } + + return dp; +} + +void __init prom_build_devicetree(void) +{ + struct device_node **nextp; + + allnodes = create_node(prom_root_node); + allnodes->path_component_name = ""; + allnodes->full_name = "/"; + + nextp = &allnodes->allnext; + allnodes->child = build_tree(allnodes, + prom_getchild(allnodes->node), + &nextp); + printk("PROM: Built device tree with %u bytes of memory.\n", + prom_early_allocated); +} |