/* * Only long word accesses of the PCIC's internal local registers and the * configuration registers from the CPU is supported.
*/ #define PCIC_WRITE(x,v) writel((v), PCI_REG(x)) #define PCIC_READ(x) readl(PCI_REG(x))
/* * 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)
{ unsignedlong bcr1, wcr1, wcr2, wcr3, mcr; unsignedshort 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 = (*(volatileunsignedlong*)(SH7751_BCR1));
bcr2 = (*(volatileunsignedshort*)(SH7751_BCR2));
wcr1 = (*(volatileunsignedlong*)(SH7751_WCR1));
wcr2 = (*(volatileunsignedlong*)(SH7751_WCR2));
wcr3 = (*(volatileunsignedlong*)(SH7751_WCR3));
mcr = (*(volatileunsignedlong*)(SH7751_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);
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.