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![Thomas Gleixner](/assets/img/avatar_default.png)
The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have been kept around for migration reasons. After more than two years it's time to remove them finally. This patch cleans up one of the remaining users. When all such patches hit mainline we can remove the defines and typedefs finally. Impact: cleanup Convert the last remaining users to struct irq_chip and remove the define. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
550 lines
12 KiB
C
550 lines
12 KiB
C
/*
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* linux/arch/alpha/kernel/sys_marvel.c
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*
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* Marvel / IO7 support
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/bitops.h>
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#include <asm/ptrace.h>
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#include <asm/system.h>
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#include <asm/dma.h>
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#include <asm/irq.h>
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#include <asm/mmu_context.h>
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#include <asm/io.h>
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#include <asm/pgtable.h>
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#include <asm/core_marvel.h>
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#include <asm/hwrpb.h>
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#include <asm/tlbflush.h>
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#include <asm/vga.h>
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#include <asm/rtc.h>
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#include "proto.h"
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#include "err_impl.h"
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#include "irq_impl.h"
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#include "pci_impl.h"
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#include "machvec_impl.h"
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#if NR_IRQS < MARVEL_NR_IRQS
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# error NR_IRQS < MARVEL_NR_IRQS !!!
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#endif
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/*
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* Interrupt handling.
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*/
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static void
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io7_device_interrupt(unsigned long vector)
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{
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unsigned int pid;
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unsigned int irq;
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/*
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* Vector is 0x800 + (interrupt)
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*
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* where (interrupt) is:
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*
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* ...16|15 14|13 4|3 0
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* -----+-----+--------+---
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* PE | 0 | irq | 0
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*
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* where (irq) is
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*
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* 0x0800 - 0x0ff0 - 0x0800 + (LSI id << 4)
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* 0x1000 - 0x2ff0 - 0x1000 + (MSI_DAT<8:0> << 4)
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*/
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pid = vector >> 16;
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irq = ((vector & 0xffff) - 0x800) >> 4;
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irq += 16; /* offset for legacy */
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irq &= MARVEL_IRQ_VEC_IRQ_MASK; /* not too many bits */
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irq |= pid << MARVEL_IRQ_VEC_PE_SHIFT; /* merge the pid */
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handle_irq(irq);
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}
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static volatile unsigned long *
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io7_get_irq_ctl(unsigned int irq, struct io7 **pio7)
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{
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volatile unsigned long *ctl;
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unsigned int pid;
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struct io7 *io7;
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pid = irq >> MARVEL_IRQ_VEC_PE_SHIFT;
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if (!(io7 = marvel_find_io7(pid))) {
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printk(KERN_ERR
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"%s for nonexistent io7 -- vec %x, pid %d\n",
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__func__, irq, pid);
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return NULL;
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}
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irq &= MARVEL_IRQ_VEC_IRQ_MASK; /* isolate the vector */
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irq -= 16; /* subtract legacy bias */
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if (irq >= 0x180) {
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printk(KERN_ERR
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"%s for invalid irq -- pid %d adjusted irq %x\n",
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__func__, pid, irq);
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return NULL;
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}
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ctl = &io7->csrs->PO7_LSI_CTL[irq & 0xff].csr; /* assume LSI */
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if (irq >= 0x80) /* MSI */
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ctl = &io7->csrs->PO7_MSI_CTL[((irq - 0x80) >> 5) & 0x0f].csr;
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if (pio7) *pio7 = io7;
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return ctl;
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}
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static void
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io7_enable_irq(unsigned int irq)
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{
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volatile unsigned long *ctl;
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struct io7 *io7;
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ctl = io7_get_irq_ctl(irq, &io7);
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if (!ctl || !io7) {
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printk(KERN_ERR "%s: get_ctl failed for irq %x\n",
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__func__, irq);
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return;
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}
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spin_lock(&io7->irq_lock);
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*ctl |= 1UL << 24;
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mb();
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*ctl;
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spin_unlock(&io7->irq_lock);
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}
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static void
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io7_disable_irq(unsigned int irq)
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{
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volatile unsigned long *ctl;
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struct io7 *io7;
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ctl = io7_get_irq_ctl(irq, &io7);
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if (!ctl || !io7) {
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printk(KERN_ERR "%s: get_ctl failed for irq %x\n",
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__func__, irq);
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return;
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}
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spin_lock(&io7->irq_lock);
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*ctl &= ~(1UL << 24);
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mb();
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*ctl;
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spin_unlock(&io7->irq_lock);
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}
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static unsigned int
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io7_startup_irq(unsigned int irq)
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{
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io7_enable_irq(irq);
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return 0; /* never anything pending */
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}
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static void
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io7_end_irq(unsigned int irq)
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{
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if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
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io7_enable_irq(irq);
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}
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static void
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marvel_irq_noop(unsigned int irq)
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{
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return;
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}
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static unsigned int
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marvel_irq_noop_return(unsigned int irq)
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{
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return 0;
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}
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static struct irq_chip marvel_legacy_irq_type = {
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.typename = "LEGACY",
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.startup = marvel_irq_noop_return,
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.shutdown = marvel_irq_noop,
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.enable = marvel_irq_noop,
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.disable = marvel_irq_noop,
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.ack = marvel_irq_noop,
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.end = marvel_irq_noop,
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};
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static struct irq_chip io7_lsi_irq_type = {
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.typename = "LSI",
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.startup = io7_startup_irq,
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.shutdown = io7_disable_irq,
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.enable = io7_enable_irq,
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.disable = io7_disable_irq,
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.ack = io7_disable_irq,
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.end = io7_end_irq,
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};
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static struct irq_chip io7_msi_irq_type = {
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.typename = "MSI",
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.startup = io7_startup_irq,
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.shutdown = io7_disable_irq,
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.enable = io7_enable_irq,
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.disable = io7_disable_irq,
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.ack = marvel_irq_noop,
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.end = io7_end_irq,
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};
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static void
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io7_redirect_irq(struct io7 *io7,
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volatile unsigned long *csr,
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unsigned int where)
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{
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unsigned long val;
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val = *csr;
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val &= ~(0x1ffUL << 24); /* clear the target pid */
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val |= ((unsigned long)where << 24); /* set the new target pid */
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*csr = val;
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mb();
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*csr;
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}
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static void
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io7_redirect_one_lsi(struct io7 *io7, unsigned int which, unsigned int where)
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{
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unsigned long val;
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/*
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* LSI_CTL has target PID @ 14
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*/
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val = io7->csrs->PO7_LSI_CTL[which].csr;
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val &= ~(0x1ffUL << 14); /* clear the target pid */
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val |= ((unsigned long)where << 14); /* set the new target pid */
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io7->csrs->PO7_LSI_CTL[which].csr = val;
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mb();
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io7->csrs->PO7_LSI_CTL[which].csr;
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}
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static void
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io7_redirect_one_msi(struct io7 *io7, unsigned int which, unsigned int where)
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{
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unsigned long val;
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/*
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* MSI_CTL has target PID @ 14
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*/
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val = io7->csrs->PO7_MSI_CTL[which].csr;
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val &= ~(0x1ffUL << 14); /* clear the target pid */
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val |= ((unsigned long)where << 14); /* set the new target pid */
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io7->csrs->PO7_MSI_CTL[which].csr = val;
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mb();
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io7->csrs->PO7_MSI_CTL[which].csr;
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}
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static void __init
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init_one_io7_lsi(struct io7 *io7, unsigned int which, unsigned int where)
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{
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/*
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* LSI_CTL has target PID @ 14
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*/
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io7->csrs->PO7_LSI_CTL[which].csr = ((unsigned long)where << 14);
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mb();
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io7->csrs->PO7_LSI_CTL[which].csr;
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}
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static void __init
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init_one_io7_msi(struct io7 *io7, unsigned int which, unsigned int where)
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{
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/*
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* MSI_CTL has target PID @ 14
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*/
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io7->csrs->PO7_MSI_CTL[which].csr = ((unsigned long)where << 14);
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mb();
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io7->csrs->PO7_MSI_CTL[which].csr;
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}
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static void __init
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init_io7_irqs(struct io7 *io7,
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struct irq_chip *lsi_ops,
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struct irq_chip *msi_ops)
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{
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long base = (io7->pe << MARVEL_IRQ_VEC_PE_SHIFT) + 16;
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long i;
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printk("Initializing interrupts for IO7 at PE %u - base %lx\n",
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io7->pe, base);
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/*
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* Where should interrupts from this IO7 go?
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*
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* They really should be sent to the local CPU to avoid having to
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* traverse the mesh, but if it's not an SMP kernel, they have to
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* go to the boot CPU. Send them all to the boot CPU for now,
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* as each secondary starts, it can redirect it's local device
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* interrupts.
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*/
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printk(" Interrupts reported to CPU at PE %u\n", boot_cpuid);
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spin_lock(&io7->irq_lock);
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/* set up the error irqs */
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io7_redirect_irq(io7, &io7->csrs->HLT_CTL.csr, boot_cpuid);
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io7_redirect_irq(io7, &io7->csrs->HPI_CTL.csr, boot_cpuid);
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io7_redirect_irq(io7, &io7->csrs->CRD_CTL.csr, boot_cpuid);
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io7_redirect_irq(io7, &io7->csrs->STV_CTL.csr, boot_cpuid);
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io7_redirect_irq(io7, &io7->csrs->HEI_CTL.csr, boot_cpuid);
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/* Set up the lsi irqs. */
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for (i = 0; i < 128; ++i) {
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irq_desc[base + i].status = IRQ_DISABLED | IRQ_LEVEL;
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irq_desc[base + i].chip = lsi_ops;
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}
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/* Disable the implemented irqs in hardware. */
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for (i = 0; i < 0x60; ++i)
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init_one_io7_lsi(io7, i, boot_cpuid);
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init_one_io7_lsi(io7, 0x74, boot_cpuid);
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init_one_io7_lsi(io7, 0x75, boot_cpuid);
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/* Set up the msi irqs. */
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for (i = 128; i < (128 + 512); ++i) {
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irq_desc[base + i].status = IRQ_DISABLED | IRQ_LEVEL;
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irq_desc[base + i].chip = msi_ops;
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}
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for (i = 0; i < 16; ++i)
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init_one_io7_msi(io7, i, boot_cpuid);
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spin_unlock(&io7->irq_lock);
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}
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static void __init
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marvel_init_irq(void)
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{
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int i;
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struct io7 *io7 = NULL;
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/* Reserve the legacy irqs. */
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for (i = 0; i < 16; ++i) {
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irq_desc[i].status = IRQ_DISABLED;
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irq_desc[i].chip = &marvel_legacy_irq_type;
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}
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/* Init the io7 irqs. */
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for (io7 = NULL; (io7 = marvel_next_io7(io7)) != NULL; )
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init_io7_irqs(io7, &io7_lsi_irq_type, &io7_msi_irq_type);
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}
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static int
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marvel_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
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{
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struct pci_controller *hose = dev->sysdata;
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struct io7_port *io7_port = hose->sysdata;
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struct io7 *io7 = io7_port->io7;
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int msi_loc, msi_data_off;
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u16 msg_ctl;
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u16 msg_dat;
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u8 intline;
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int irq;
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pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &intline);
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irq = intline;
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msi_loc = pci_find_capability(dev, PCI_CAP_ID_MSI);
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msg_ctl = 0;
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if (msi_loc)
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pci_read_config_word(dev, msi_loc + PCI_MSI_FLAGS, &msg_ctl);
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if (msg_ctl & PCI_MSI_FLAGS_ENABLE) {
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msi_data_off = PCI_MSI_DATA_32;
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if (msg_ctl & PCI_MSI_FLAGS_64BIT)
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msi_data_off = PCI_MSI_DATA_64;
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pci_read_config_word(dev, msi_loc + msi_data_off, &msg_dat);
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irq = msg_dat & 0x1ff; /* we use msg_data<8:0> */
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irq += 0x80; /* offset for lsi */
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#if 1
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printk("PCI:%d:%d:%d (hose %d) is using MSI\n",
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dev->bus->number,
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PCI_SLOT(dev->devfn),
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PCI_FUNC(dev->devfn),
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hose->index);
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printk(" %d message(s) from 0x%04x\n",
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1 << ((msg_ctl & PCI_MSI_FLAGS_QSIZE) >> 4),
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msg_dat);
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printk(" reporting on %d IRQ(s) from %d (0x%x)\n",
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1 << ((msg_ctl & PCI_MSI_FLAGS_QSIZE) >> 4),
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(irq + 16) | (io7->pe << MARVEL_IRQ_VEC_PE_SHIFT),
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(irq + 16) | (io7->pe << MARVEL_IRQ_VEC_PE_SHIFT));
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#endif
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#if 0
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pci_write_config_word(dev, msi_loc + PCI_MSI_FLAGS,
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msg_ctl & ~PCI_MSI_FLAGS_ENABLE);
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pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &intline);
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irq = intline;
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printk(" forcing LSI interrupt on irq %d [0x%x]\n", irq, irq);
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#endif
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}
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irq += 16; /* offset for legacy */
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irq |= io7->pe << MARVEL_IRQ_VEC_PE_SHIFT; /* merge the pid */
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return irq;
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}
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static void __init
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marvel_init_pci(void)
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{
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struct io7 *io7;
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marvel_register_error_handlers();
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pci_probe_only = 1;
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common_init_pci();
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locate_and_init_vga(NULL);
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/* Clear any io7 errors. */
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for (io7 = NULL; (io7 = marvel_next_io7(io7)) != NULL; )
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io7_clear_errors(io7);
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}
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static void __init
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marvel_init_rtc(void)
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{
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init_rtc_irq();
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}
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struct marvel_rtc_time {
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struct rtc_time *time;
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int retval;
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};
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#ifdef CONFIG_SMP
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static void
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smp_get_rtc_time(void *data)
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{
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struct marvel_rtc_time *mrt = data;
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mrt->retval = __get_rtc_time(mrt->time);
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}
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static void
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smp_set_rtc_time(void *data)
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{
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struct marvel_rtc_time *mrt = data;
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mrt->retval = __set_rtc_time(mrt->time);
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}
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#endif
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static unsigned int
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marvel_get_rtc_time(struct rtc_time *time)
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{
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#ifdef CONFIG_SMP
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struct marvel_rtc_time mrt;
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if (smp_processor_id() != boot_cpuid) {
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mrt.time = time;
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smp_call_function_single(boot_cpuid, smp_get_rtc_time, &mrt, 1);
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return mrt.retval;
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}
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#endif
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return __get_rtc_time(time);
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}
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static int
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marvel_set_rtc_time(struct rtc_time *time)
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{
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#ifdef CONFIG_SMP
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struct marvel_rtc_time mrt;
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if (smp_processor_id() != boot_cpuid) {
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mrt.time = time;
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smp_call_function_single(boot_cpuid, smp_set_rtc_time, &mrt, 1);
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return mrt.retval;
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}
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#endif
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return __set_rtc_time(time);
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}
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static void
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marvel_smp_callin(void)
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{
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int cpuid = hard_smp_processor_id();
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struct io7 *io7 = marvel_find_io7(cpuid);
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unsigned int i;
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if (!io7)
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return;
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/*
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* There is a local IO7 - redirect all of its interrupts here.
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*/
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printk("Redirecting IO7 interrupts to local CPU at PE %u\n", cpuid);
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/* Redirect the error IRQS here. */
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io7_redirect_irq(io7, &io7->csrs->HLT_CTL.csr, cpuid);
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io7_redirect_irq(io7, &io7->csrs->HPI_CTL.csr, cpuid);
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io7_redirect_irq(io7, &io7->csrs->CRD_CTL.csr, cpuid);
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io7_redirect_irq(io7, &io7->csrs->STV_CTL.csr, cpuid);
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io7_redirect_irq(io7, &io7->csrs->HEI_CTL.csr, cpuid);
|
||
|
||
/* Redirect the implemented LSIs here. */
|
||
for (i = 0; i < 0x60; ++i)
|
||
io7_redirect_one_lsi(io7, i, cpuid);
|
||
|
||
io7_redirect_one_lsi(io7, 0x74, cpuid);
|
||
io7_redirect_one_lsi(io7, 0x75, cpuid);
|
||
|
||
/* Redirect the MSIs here. */
|
||
for (i = 0; i < 16; ++i)
|
||
io7_redirect_one_msi(io7, i, cpuid);
|
||
}
|
||
|
||
/*
|
||
* System Vectors
|
||
*/
|
||
struct alpha_machine_vector marvel_ev7_mv __initmv = {
|
||
.vector_name = "MARVEL/EV7",
|
||
DO_EV7_MMU,
|
||
.rtc_port = 0x70,
|
||
.rtc_get_time = marvel_get_rtc_time,
|
||
.rtc_set_time = marvel_set_rtc_time,
|
||
DO_MARVEL_IO,
|
||
.machine_check = marvel_machine_check,
|
||
.max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS,
|
||
.min_io_address = DEFAULT_IO_BASE,
|
||
.min_mem_address = DEFAULT_MEM_BASE,
|
||
.pci_dac_offset = IO7_DAC_OFFSET,
|
||
|
||
.nr_irqs = MARVEL_NR_IRQS,
|
||
.device_interrupt = io7_device_interrupt,
|
||
|
||
.agp_info = marvel_agp_info,
|
||
|
||
.smp_callin = marvel_smp_callin,
|
||
.init_arch = marvel_init_arch,
|
||
.init_irq = marvel_init_irq,
|
||
.init_rtc = marvel_init_rtc,
|
||
.init_pci = marvel_init_pci,
|
||
.kill_arch = marvel_kill_arch,
|
||
.pci_map_irq = marvel_map_irq,
|
||
.pci_swizzle = common_swizzle,
|
||
|
||
.pa_to_nid = marvel_pa_to_nid,
|
||
.cpuid_to_nid = marvel_cpuid_to_nid,
|
||
.node_mem_start = marvel_node_mem_start,
|
||
.node_mem_size = marvel_node_mem_size,
|
||
};
|
||
ALIAS_MV(marvel_ev7)
|