/* *	linux/arch/alpha/kernel/sys_sx164.c * *	Copyright (C) 1995 David A Rusling *	Copyright (C) 1996 Jay A Estabrook *	Copyright (C) 1998, 1999, 2000 Richard Henderson * * Code supporting the SX164 (PCA56+PYXIS). */#include <linux/kernel.h>#include <linux/types.h>#include <linux/mm.h>#include <linux/sched.h>#include <linux/pci.h>#include <linux/init.h>#include <asm/ptrace.h>#include <asm/system.h>#include <asm/dma.h>#include <asm/irq.h>#include <asm/bitops.h>#include <asm/mmu_context.h>#include <asm/io.h>#include <asm/pgtable.h>#include <asm/core_cia.h>#include <asm/hwrpb.h>#include "proto.h"#include "irq_impl.h"#include "pci_impl.h"#include "machvec_impl.h"static void __initsx164_init_irq(void){	outb(0, DMA1_RESET_REG);	outb(0, DMA2_RESET_REG);	outb(DMA_MODE_CASCADE, DMA2_MODE_REG);	outb(0, DMA2_MASK_REG);	if (alpha_using_srm)		alpha_mv.device_interrupt = srm_device_interrupt;	init_i8259a_irqs();	/* Not interested in the bogus interrupts (0,3,4,5,40-47),	   NMI (1), or HALT (2).  */	if (alpha_using_srm)		init_srm_irqs(40, 0x3f0000);	else		init_pyxis_irqs(0xff00003f0000);	setup_irq(16+6, &timer_cascade_irqaction);}/* * PCI Fixup configuration. * * Summary @ PYXIS_INT_REQ: * Bit      Meaning * 0        RSVD * 1        NMI * 2        Halt/Reset switch * 3        MBZ * 4        RAZ * 5        RAZ * 6        Interval timer (RTC) * 7        PCI-ISA Bridge * 8        Interrupt Line A from slot 3 * 9        Interrupt Line A from slot 2 *10        Interrupt Line A from slot 1 *11        Interrupt Line A from slot 0 *12        Interrupt Line B from slot 3 *13        Interrupt Line B from slot 2 *14        Interrupt Line B from slot 1 *15        Interrupt line B from slot 0 *16        Interrupt Line C from slot 3 *17        Interrupt Line C from slot 2 *18        Interrupt Line C from slot 1 *19        Interrupt Line C from slot 0 *20        Interrupt Line D from slot 3 *21        Interrupt Line D from slot 2 *22        Interrupt Line D from slot 1 *23        Interrupt Line D from slot 0 * * IdSel        *   5  32 bit PCI option slot 2 *   6  64 bit PCI option slot 0 *   7  64 bit PCI option slot 1 *   8  Cypress I/O *   9  32 bit PCI option slot 3 */static int __initsx164_map_irq(struct pci_dev *dev, u8 slot, u8 pin){	static char irq_tab[5][5] __initdata = {		/*INT    INTA   INTB   INTC   INTD */		{ 16+ 9, 16+ 9, 16+13, 16+17, 16+21}, /* IdSel 5 slot 2 J17 */		{ 16+11, 16+11, 16+15, 16+19, 16+23}, /* IdSel 6 slot 0 J19 */		{ 16+10, 16+10, 16+14, 16+18, 16+22}, /* IdSel 7 slot 1 J18 */		{    -1,    -1,    -1,	  -1,    -1}, /* IdSel 8 SIO        */		{ 16+ 8, 16+ 8, 16+12, 16+16, 16+20}  /* IdSel 9 slot 3 J15 */	};	const long min_idsel = 5, max_idsel = 9, irqs_per_slot = 5;	return COMMON_TABLE_LOOKUP;}static void __initsx164_init_pci(void){	cia_init_pci();	SMC669_Init(0);}static void __initsx164_init_arch(void){	/*	 * OSF palcode v1.23 forgets to enable PCA56 Motion Video	 * Instructions. Let's enable it.	 * We have to check palcode revision because CSERVE interface	 * is subject to change without notice. For example, it	 * has been changed completely since v1.16 (found in MILO	 * distribution). -ink	 */	struct percpu_struct *cpu = (struct percpu_struct*)		((char*)hwrpb + hwrpb->processor_offset);	if (amask(AMASK_MAX) != 0	    && alpha_using_srm	    && (cpu->pal_revision & 0xffff) == 0x117) {		__asm__ __volatile__(		"lda	$16,8($31)\n"		"call_pal 9\n"		/* Allow PALRES insns in kernel mode */		".long  0x64000118\n\n"	/* hw_mfpr $0,icsr */		"ldah	$16,(1<<(19-16))($31)\n"		"or	$0,$16,$0\n"	/* set MVE bit */		".long  0x74000118\n"	/* hw_mtpr $0,icsr */		"lda	$16,9($31)\n"		"call_pal 9"		/* Disable PALRES insns */		: : : "$0", "$16");		printk("PCA56 MVI set enabled\n");	}	pyxis_init_arch();}/* * The System Vector */struct alpha_machine_vector sx164_mv __initmv = {	vector_name:		"SX164",	DO_EV5_MMU,	DO_DEFAULT_RTC,	DO_PYXIS_IO,	DO_CIA_BUS,	machine_check:		cia_machine_check,	max_dma_address:	ALPHA_MAX_DMA_ADDRESS,	min_io_address:		DEFAULT_IO_BASE,	min_mem_address:	DEFAULT_MEM_BASE,	pci_dac_offset:		PYXIS_DAC_OFFSET,	nr_irqs:		48,	device_interrupt:	pyxis_device_interrupt,	init_arch:		sx164_init_arch,	init_irq:		sx164_init_irq,	init_rtc:		common_init_rtc,	init_pci:		sx164_init_pci,	kill_arch:		NULL,	pci_map_irq:		sx164_map_irq,	pci_swizzle:		common_swizzle,};ALIAS_MV(sx164)