diff options
Diffstat (limited to 'arch/sh/drivers/pci/pci-sh7780.c')
| -rw-r--r-- | arch/sh/drivers/pci/pci-sh7780.c | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/arch/sh/drivers/pci/pci-sh7780.c b/arch/sh/drivers/pci/pci-sh7780.c index 7f4f5903754..63b5151e9aa 100644 --- a/arch/sh/drivers/pci/pci-sh7780.c +++ b/arch/sh/drivers/pci/pci-sh7780.c @@ -34,33 +34,39 @@ int __init sh7780_pci_init(struct pci_channel *chan) { unsigned int id; - int ret, match = 0; + const char *type = NULL; + int ret; - pr_debug("PCI: Starting intialization.\n"); + printk(KERN_NOTICE "PCI: Starting intialization.\n"); chan->reg_base = 0xfe040000; chan->io_base = 0xfe200000; - ctrl_outl(0x00000001, SH7780_PCI_VCR2); /* Enable PCIC */ - - /* check for SH7780/SH7780R hardware */ - id = pci_read_reg(chan, SH7780_PCIVID); - if ((id & 0xffff) == SH7780_VENDOR_ID) { - switch ((id >> 16) & 0xffff) { - case SH7763_DEVICE_ID: - case SH7780_DEVICE_ID: - case SH7781_DEVICE_ID: - case SH7785_DEVICE_ID: - match = 1; - break; - } - } + /* Enable CPU access to the PCIC registers. */ + __raw_writel(PCIECR_ENBL, PCIECR); - if (unlikely(!match)) { - printk(KERN_ERR "PCI: This is not an SH7780 (%x)\n", id); + id = __raw_readw(chan->reg_base + SH7780_PCIVID); + if (id != SH7780_VENDOR_ID) { + printk(KERN_ERR "PCI: Unknown vendor ID 0x%04x.\n", id); return -ENODEV; } + id = __raw_readw(chan->reg_base + SH7780_PCIDID); + type = (id == SH7763_DEVICE_ID) ? "SH7763" : + (id == SH7780_DEVICE_ID) ? "SH7780" : + (id == SH7781_DEVICE_ID) ? "SH7781" : + (id == SH7785_DEVICE_ID) ? "SH7785" : + NULL; + if (unlikely(!type)) { + printk(KERN_ERR "PCI: Found an unsupported Renesas host " + "controller, device id 0x%04x.\n", id); + return -EINVAL; + } + + printk(KERN_NOTICE "PCI: Found a Renesas %s host " + "controller, revision %d.\n", type, + __raw_readb(chan->reg_base + SH7780_PCIRID)); + if ((ret = sh4_pci_check_direct(chan)) != 0) return ret; |