/* * TURBOchannel architecture calls. * * Copyright (c) Harald Koerfgen, 1998 * Copyright (c) 2001, 2003, 2005, 2006 Maciej W. Rozycki * Copyright (c) 2005 James Simmons * * This file is subject to the terms and conditions of the GNU * General Public License. See the file "COPYING" in the main * directory of this archive for more details. */ #include <linux/compiler.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/string.h> #include <linux/tc.h> #include <linux/types.h> #include <asm/addrspace.h> #include <asm/bootinfo.h> #include <asm/paccess.h> #include <asm/dec/interrupts.h> #include <asm/dec/prom.h> #include <asm/dec/system.h> /* * Protected read byte from TURBOchannel slot space. */ int tc_preadb(u8 *valp, void __iomem *addr) { return get_dbe(*valp, (u8 *)addr); } /* * Get TURBOchannel bus information as specified by the spec, plus * the slot space base address and the number of slots. */ int __init tc_bus_get_info(struct tc_bus *tbus) { if (!dec_tc_bus) return -ENXIO; memcpy(&tbus->info, rex_gettcinfo(), sizeof(tbus->info)); tbus->slot_base = CPHYSADDR((long)rex_slot_address(0)); switch (mips_machtype) { case MACH_DS5000_200: tbus->num_tcslots = 7; break; case MACH_DS5000_2X0: case MACH_DS5900: tbus->ext_slot_base = 0x20000000; tbus->ext_slot_size = 0x20000000; fallthrough; case MACH_DS5000_1XX: tbus->num_tcslots = 3; break; case MACH_DS5000_XX: tbus->num_tcslots = 2; default: break; } return 0; } /* * Get the IRQ for the specified slot. */ void __init tc_device_get_irq(struct tc_dev *tdev) { switch (tdev->slot) { case 0: tdev->interrupt = dec_interrupt[DEC_IRQ_TC0]; break; case 1: tdev->interrupt = dec_interrupt[DEC_IRQ_TC1]; break; case 2: tdev->interrupt = dec_interrupt[DEC_IRQ_TC2]; break; /* * Yuck! DS5000/200 onboard devices */ case 5: tdev->interrupt = dec_interrupt[DEC_IRQ_TC5]; break; case 6: tdev->interrupt = dec_interrupt[DEC_IRQ_TC6]; break; default: tdev->interrupt = -1; break; } }