/* * Description: This function sets up and initializes the pcic, sets * up the BARS, maps the DRAM into the address space etc, etc. */ int pci_fixup_pcic(struct pci_channel *chan) { unsigned long bcr1, wcr1, wcr2, wcr3, mcr; unsigned short bcr2; /* * Initialize the slave bus controller on the pcic. The values used * here should not be hardcoded, but they should be taken from the bsc * on the processor, to make this function as generic as possible. * (i.e. Another sbc may usr different SDRAM timing settings -- in order * for the pcic to work, its settings need to be exactly the same.) */ bcr1 = (*(volatile unsigned long*)(SH7751_BCR1)); bcr2 = (*(volatile unsigned short*)(SH7751_BCR2)); wcr1 = (*(volatile unsigned long*)(SH7751_WCR1)); wcr2 = (*(volatile unsigned long*)(SH7751_WCR2)); wcr3 = (*(volatile unsigned long*)(SH7751_WCR3)); mcr = (*(volatile unsigned long*)(SH7751_MCR)); bcr1 = bcr1 | 0x00080000; /* Enable Bit 19, BREQEN */ (*(volatile unsigned long*)(SH7751_BCR1)) = bcr1; bcr1 = bcr1 | 0x40080000; /* Enable Bit 19 BREQEN, set PCIC to slave */ PCIC_WRITE(SH7751_PCIBCR1, bcr1); /* PCIC BCR1 */ PCIC_WRITE(SH7751_PCIBCR2, bcr2); /* PCIC BCR2 */ PCIC_WRITE(SH7751_PCIWCR1, wcr1); /* PCIC WCR1 */ PCIC_WRITE(SH7751_PCIWCR2, wcr2); /* PCIC WCR2 */ PCIC_WRITE(SH7751_PCIWCR3, wcr3); /* PCIC WCR3 */ mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF; PCIC_WRITE(SH7751_PCIMCR, mcr); /* PCIC MCR */ /* Enable all interrupts, so we know what to fix */ PCIC_WRITE(SH7751_PCIINTM, 0x0000c3ff); PCIC_WRITE(SH7751_PCIAINTM, 0x0000380f); /* Set up standard PCI config registers */ PCIC_WRITE(SH7751_PCICONF1, 0xF39000C7); /* Bus Master, Mem & I/O access */ PCIC_WRITE(SH7751_PCICONF2, 0x00000000); /* PCI Class code & Revision ID */ PCIC_WRITE(SH7751_PCICONF4, 0xab000001); /* PCI I/O address (local regs) */ PCIC_WRITE(SH7751_PCICONF5, 0x0c000000); /* PCI MEM address (local RAM) */ PCIC_WRITE(SH7751_PCICONF6, 0xd0000000); /* PCI MEM address (unused) */ PCIC_WRITE(SH7751_PCICONF11, 0x35051054); /* PCI Subsystem ID & Vendor ID */ PCIC_WRITE(SH7751_PCILSR0, 0x03f00000); /* MEM (full 64M exposed) */ PCIC_WRITE(SH7751_PCILSR1, 0x00000000); /* MEM (unused) */ PCIC_WRITE(SH7751_PCILAR0, 0x0c000000); /* MEM (direct map from PCI) */ PCIC_WRITE(SH7751_PCILAR1, 0x00000000); /* MEM (unused) */ /* Now turn it on... */ PCIC_WRITE(SH7751_PCICR, 0xa5000001); /* * Set PCIMBR and PCIIOBR here, assuming a single window * (16M MEM, 256K IO) is enough. If a larger space is * needed, the readx/writex and inx/outx functions will * have to do more (e.g. setting registers for each call). */ /* * Set the MBR so PCI address is one-to-one with window, * meaning all calls go straight through... use BUG_ON to * catch erroneous assumption. */ BUG_ON(chan->resources[1].start != SH7751_PCI_MEMORY_BASE); PCIC_WRITE(SH7751_PCIMBR, chan->resources[1].start); /* Set IOBR for window containing area specified in pci.h */ PCIC_WRITE(SH7751_PCIIOBR, (chan->resources[0].start & SH7751_PCIIOBR_MASK)); /* All done, may as well say so... */ printk("SH7751 PCI: Finished initialization of the PCI controller\n"); return 1; }
int pci_fixup_pcic(struct pci_channel *chan) { unsigned long bcr1, wcr1, wcr2, wcr3, mcr; unsigned short bcr2; bcr1 = (*(volatile unsigned long*)(SH7751_BCR1)); bcr2 = (*(volatile unsigned short*)(SH7751_BCR2)); wcr1 = (*(volatile unsigned long*)(SH7751_WCR1)); wcr2 = (*(volatile unsigned long*)(SH7751_WCR2)); wcr3 = (*(volatile unsigned long*)(SH7751_WCR3)); mcr = (*(volatile unsigned long*)(SH7751_MCR)); bcr1 = bcr1 | 0x00080000; (*(volatile unsigned long*)(SH7751_BCR1)) = bcr1; bcr1 = bcr1 | 0x40080000; PCIC_WRITE(SH7751_PCIBCR1, bcr1); PCIC_WRITE(SH7751_PCIBCR2, bcr2); PCIC_WRITE(SH7751_PCIWCR1, wcr1); PCIC_WRITE(SH7751_PCIWCR2, wcr2); PCIC_WRITE(SH7751_PCIWCR3, wcr3); mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF; PCIC_WRITE(SH7751_PCIMCR, mcr); PCIC_WRITE(SH7751_PCIINTM, 0x0000c3ff); PCIC_WRITE(SH7751_PCIAINTM, 0x0000380f); PCIC_WRITE(SH7751_PCICONF1, 0xF39000C7); PCIC_WRITE(SH7751_PCICONF2, 0x00000000); PCIC_WRITE(SH7751_PCICONF4, 0xab000001); PCIC_WRITE(SH7751_PCICONF5, 0x0c000000); PCIC_WRITE(SH7751_PCICONF6, 0xd0000000); PCIC_WRITE(SH7751_PCICONF11, 0x35051054); PCIC_WRITE(SH7751_PCILSR0, 0x03f00000); PCIC_WRITE(SH7751_PCILSR1, 0x00000000); PCIC_WRITE(SH7751_PCILAR0, 0x0c000000); PCIC_WRITE(SH7751_PCILAR1, 0x00000000); PCIC_WRITE(SH7751_PCICR, 0xa5000001); BUG_ON(chan->resources[1].start != SH7751_PCI_MEMORY_BASE); PCIC_WRITE(SH7751_PCIMBR, chan->resources[1].start); PCIC_WRITE(SH7751_PCIIOBR, (chan->resources[0].start & SH7751_PCIIOBR_MASK)); printk("SH7751 PCI: Finished initialization of the PCI controller\n"); return 1; }