diff options
Diffstat (limited to 'bsps/powerpc/mvme3100/pci/detect_host_bridge.c')
| -rw-r--r-- | bsps/powerpc/mvme3100/pci/detect_host_bridge.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/bsps/powerpc/mvme3100/pci/detect_host_bridge.c b/bsps/powerpc/mvme3100/pci/detect_host_bridge.c new file mode 100644 index 0000000000..8488c99dc5 --- /dev/null +++ b/bsps/powerpc/mvme3100/pci/detect_host_bridge.c @@ -0,0 +1,113 @@ +/* PCI Initialization */ + +/* + * Authorship + * ---------- + * This software ('mvme3100' RTEMS BSP) was created by + * + * Till Straumann <strauman@slac.stanford.edu>, 2005-2007, + * Stanford Linear Accelerator Center, Stanford University. + * + * Acknowledgement of sponsorship + * ------------------------------ + * The 'mvme3100' BSP was produced by + * the Stanford Linear Accelerator Center, Stanford University, + * under Contract DE-AC03-76SFO0515 with the Department of Energy. + * + * Government disclaimer of liability + * ---------------------------------- + * Neither the United States nor the United States Department of Energy, + * nor any of their employees, makes any warranty, express or implied, or + * assumes any legal liability or responsibility for the accuracy, + * completeness, or usefulness of any data, apparatus, product, or process + * disclosed, or represents that its use would not infringe privately owned + * rights. + * + * Stanford disclaimer of liability + * -------------------------------- + * Stanford University makes no representations or warranties, express or + * implied, nor assumes any liability for the use of this software. + * + * Stanford disclaimer of copyright + * -------------------------------- + * Stanford University, owner of the copyright, hereby disclaims its + * copyright and all other rights in this software. Hence, anyone may + * freely use it for any purpose without restriction. + * + * Maintenance of notices + * ---------------------- + * In the interest of clarity regarding the origin and status of this + * SLAC software, this and all the preceding Stanford University notices + * are to remain affixed to any copy or derivative of this software made + * or distributed by the recipient and are to be affixed to any copy of + * software made or distributed by the recipient that contains a copy or + * derivative of this software. + * + * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03 + */ + +#include <bsp.h> +#include <bsp/pci.h> +#include <bsp/irq.h> +#include <bsp/openpic.h> +#include <inttypes.h> + +/* Motload configures PCI interrupts to start at 16 and up but + * we'd rather have them starting at 0. + * Use this callback to fix them up. + */ +static int +fixup_irq_line(int bus, int slot, int fun, void *uarg) +{ +unsigned char line; + pci_read_config_byte( bus, slot, fun, PCI_INTERRUPT_LINE, &line); + if ( line >= BSP_EXT_IRQ_NUMBER ) { + pci_write_config_byte( bus, slot, fun, PCI_INTERRUPT_LINE, line - BSP_EXT_IRQ_NUMBER ); + } + + return 0; +} + +void BSP_motload_pci_fixup(void) +{ + BSP_pciScan(0, fixup_irq_line, 0); +} + +void detect_host_bridge(void) +{ + OpenPIC = (volatile struct OpenPIC *) (BSP_8540_CCSR_BASE + BSP_OPEN_PIC_BASE_OFFSET); +} + +static int +dump_dev_cb( + int bus, + int dev, + int fun, + void *uarg +) +{ + uint16_t vi,di; + uint16_t cd,st; + uint32_t b1,b2; + uint8_t il,ip; + + pci_read_config_word (bus, dev, fun, PCI_VENDOR_ID, &vi); + pci_read_config_word (bus, dev, fun, PCI_DEVICE_ID, &di); + pci_read_config_word (bus, dev, fun, PCI_COMMAND, &cd); + pci_read_config_word (bus, dev, fun, PCI_STATUS, &st); + pci_read_config_dword(bus, dev, fun, PCI_BASE_ADDRESS_0, &b1); + pci_read_config_dword(bus, dev, fun, PCI_BASE_ADDRESS_1, &b2); + pci_read_config_byte (bus, dev, fun, PCI_INTERRUPT_LINE, &il); + pci_read_config_byte (bus, dev, fun, PCI_INTERRUPT_PIN, &ip); + + printk("%3d:0x%02x:%d 0x%04x-0x%04x: 0x%04x 0x%04x 0x%08" PRIx32 " 0x%08" PRIx32 " %d -> %3d (=0x%02x)\n", + bus, dev, fun, vi, di, cd, st, b1, b2, ip, il, il); + return 0; +} + +void +BSP_pciConfigDump_early(void) +{ + printk("BUS:SLOT:FUN VENDOR-DEV_ID: COMMAND STATUS BASE_ADDR0 BASE_ADDR1 IRQ_PIN -> IRQ_LINE\n"); + BSP_pciScan(0, dump_dev_cb, 0); +} |