diff options
Diffstat (limited to 'arch/sh/drivers/pci/pci.c')
| -rw-r--r-- | arch/sh/drivers/pci/pci.c | 169 | 
1 files changed, 27 insertions, 142 deletions
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c index 60ee09a4e12..1bc09ee7948 100644 --- a/arch/sh/drivers/pci/pci.c +++ b/arch/sh/drivers/pci/pci.c @@ -20,6 +20,7 @@  #include <linux/io.h>  #include <linux/mutex.h>  #include <linux/spinlock.h> +#include <linux/export.h>  unsigned long PCIBIOS_MIN_IO = 0x0000;  unsigned long PCIBIOS_MIN_MEM = 0; @@ -31,19 +32,34 @@ static struct pci_channel *hose_head, **hose_tail = &hose_head;  static int pci_initialized; -static void __devinit pcibios_scanbus(struct pci_channel *hose) +static void pcibios_scanbus(struct pci_channel *hose)  {  	static int next_busno;  	static int need_domain_info; +	LIST_HEAD(resources); +	struct resource *res; +	resource_size_t offset; +	int i;  	struct pci_bus *bus; -	bus = pci_scan_bus(next_busno, hose->pci_ops, hose); +	for (i = 0; i < hose->nr_resources; i++) { +		res = hose->resources + i; +		offset = 0; +		if (res->flags & IORESOURCE_IO) +			offset = hose->io_offset; +		else if (res->flags & IORESOURCE_MEM) +			offset = hose->mem_offset; +		pci_add_resource_offset(&resources, res, offset); +	} + +	bus = pci_scan_root_bus(NULL, next_busno, hose->pci_ops, hose, +				&resources);  	hose->bus = bus;  	need_domain_info = need_domain_info || hose->index;  	hose->need_domain_info = need_domain_info;  	if (bus) { -		next_busno = bus->subordinate + 1; +		next_busno = bus->busn_res.end + 1;  		/* Don't allow 8-bit bus number overflow inside the hose -  		   reserve some space for bridges. */  		if (next_busno > 224) { @@ -53,7 +69,8 @@ static void __devinit pcibios_scanbus(struct pci_channel *hose)  		pci_bus_size_bridges(bus);  		pci_bus_assign_resources(bus); -		pci_enable_bridges(bus); +	} else { +		pci_free_resource_list(&resources);  	}  } @@ -64,7 +81,7 @@ static void __devinit pcibios_scanbus(struct pci_channel *hose)  DEFINE_RAW_SPINLOCK(pci_config_lock);  static DEFINE_MUTEX(pci_scan_mutex); -int __devinit register_pci_controller(struct pci_channel *hose) +int register_pci_controller(struct pci_channel *hose)  {  	int i; @@ -84,7 +101,7 @@ int __devinit register_pci_controller(struct pci_channel *hose)  	hose_tail = &hose->next;  	/* -	 * Do not panic here but later - this might hapen before console init. +	 * Do not panic here but later - this might happen before console init.  	 */  	if (!hose->io_map_base) {  		printk(KERN_WARNING @@ -134,50 +151,12 @@ static int __init pcibios_init(void)  }  subsys_initcall(pcibios_init); -static void pcibios_fixup_device_resources(struct pci_dev *dev, -	struct pci_bus *bus) -{ -	/* Update device resources.  */ -	struct pci_channel *hose = bus->sysdata; -	unsigned long offset = 0; -	int i; - -	for (i = 0; i < PCI_NUM_RESOURCES; i++) { -		if (!dev->resource[i].start) -			continue; -		if (dev->resource[i].flags & IORESOURCE_IO) -			offset = hose->io_offset; -		else if (dev->resource[i].flags & IORESOURCE_MEM) -			offset = hose->mem_offset; - -		dev->resource[i].start += offset; -		dev->resource[i].end += offset; -	} -} -  /*   *  Called after each bus is probed, but before its children   *  are examined.   */ -void __devinit pcibios_fixup_bus(struct pci_bus *bus) +void pcibios_fixup_bus(struct pci_bus *bus)  { -	struct pci_dev *dev = bus->self; -	struct list_head *ln; -	struct pci_channel *hose = bus->sysdata; - -	if (!dev) { -		int i; - -		for (i = 0; i < hose->nr_resources; i++) -			bus->resource[i] = hose->resources + i; -	} - -	for (ln = bus->devices.next; ln != &bus->devices; ln = ln->next) { -		dev = pci_dev_b(ln); - -		if ((dev->class >> 8) != PCI_CLASS_BRIDGE_PCI) -			pcibios_fixup_device_resources(dev, bus); -	}  }  /* @@ -207,72 +186,6 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,  	return start;  } -void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, -			     struct resource *res) -{ -	struct pci_channel *hose = dev->sysdata; -	unsigned long offset = 0; - -	if (res->flags & IORESOURCE_IO) -		offset = hose->io_offset; -	else if (res->flags & IORESOURCE_MEM) -		offset = hose->mem_offset; - -	region->start = res->start - offset; -	region->end = res->end - offset; -} - -void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, -			     struct pci_bus_region *region) -{ -	struct pci_channel *hose = dev->sysdata; -	unsigned long offset = 0; - -	if (res->flags & IORESOURCE_IO) -		offset = hose->io_offset; -	else if (res->flags & IORESOURCE_MEM) -		offset = hose->mem_offset; - -	res->start = region->start + offset; -	res->end = region->end + offset; -} - -int pcibios_enable_device(struct pci_dev *dev, int mask) -{ -	return pci_enable_resources(dev, mask); -} - -/* - *  If we set up a device for bus mastering, we need to check and set - *  the latency timer as it may not be properly set. - */ -static unsigned int pcibios_max_latency = 255; - -void pcibios_set_master(struct pci_dev *dev) -{ -	u8 lat; -	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat); -	if (lat < 16) -		lat = (64 <= pcibios_max_latency) ? 64 : pcibios_max_latency; -	else if (lat > pcibios_max_latency) -		lat = pcibios_max_latency; -	else -		return; -	printk(KERN_INFO "PCI: Setting latency timer of device %s to %d\n", -	       pci_name(dev), lat); -	pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat); -} - -void __init pcibios_update_irq(struct pci_dev *dev, int irq) -{ -	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq); -} - -char * __devinit __weak pcibios_setup(char *str) -{ -	return str; -} -  static void __init  pcibios_bus_report_status_early(struct pci_channel *hose,  				int top_bus, int current_bus, @@ -376,46 +289,22 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,  #ifndef CONFIG_GENERIC_IOMAP -static void __iomem *ioport_map_pci(struct pci_dev *dev, -				    unsigned long port, unsigned int nr) +void __iomem *__pci_ioport_map(struct pci_dev *dev, +			       unsigned long port, unsigned int nr)  {  	struct pci_channel *chan = dev->sysdata;  	if (unlikely(!chan->io_map_base)) { -		chan->io_map_base = generic_io_base; +		chan->io_map_base = sh_io_port_base;  		if (pci_domains_supported)  			panic("To avoid data corruption io_map_base MUST be "  			      "set with multiple PCI domains.");  	} -  	return (void __iomem *)(chan->io_map_base + port);  } -void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen) -{ -	resource_size_t start = pci_resource_start(dev, bar); -	resource_size_t len = pci_resource_len(dev, bar); -	unsigned long flags = pci_resource_flags(dev, bar); - -	if (unlikely(!len || !start)) -		return NULL; -	if (maxlen && len > maxlen) -		len = maxlen; - -	if (flags & IORESOURCE_IO) -		return ioport_map_pci(dev, start, len); -	if (flags & IORESOURCE_MEM) { -		if (flags & IORESOURCE_CACHEABLE) -			return ioremap(start, len); -		return ioremap_nocache(start, len); -	} - -	return NULL; -} -EXPORT_SYMBOL(pci_iomap); -  void pci_iounmap(struct pci_dev *dev, void __iomem *addr)  {  	iounmap(addr); @@ -424,9 +313,5 @@ EXPORT_SYMBOL(pci_iounmap);  #endif /* CONFIG_GENERIC_IOMAP */ -#ifdef CONFIG_HOTPLUG -EXPORT_SYMBOL(pcibios_resource_to_bus); -EXPORT_SYMBOL(pcibios_bus_to_resource);  EXPORT_SYMBOL(PCIBIOS_MIN_IO);  EXPORT_SYMBOL(PCIBIOS_MIN_MEM); -#endif  | 
