1 files changed, 88 insertions, 181 deletions

diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index aeaa09a3c65..6cc78c213c0 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -25,6 +25,7 @@
 #include <linux/time.h>
 #include <linux/timex.h>
 #include <linux/interrupt.h>
+#include <linux/export.h>
 
 #include <asm/irq.h>
 #include <asm/oplib.h>
@@ -35,6 +36,7 @@
 #include <asm/uaccess.h>
 #include <asm/irq_regs.h>
 
+#include "kernel.h"
 #include "irq.h"
 
 /*
@@ -161,9 +163,12 @@ static int pcic0_up;
 static struct linux_pcic pcic0;
 
 void __iomem *pcic_regs;
-volatile int pcic_speculative;
-volatile int pcic_trapped;
+static volatile int pcic_speculative;
+static volatile int pcic_trapped;
 
+/* forward */
+unsigned int pcic_build_device_irq(struct platform_device *op,
+                                   unsigned int real_irq);
 
 #define CONFIG_CMD(bus, device_fn, where) (0x80000000 | (((unsigned int)bus) << 16) | (((unsigned int)device_fn) << 8) | (where & ~3))
 
@@ -325,7 +330,7 @@ int __init pcic_probe(void)
 
 	pcic->pcic_res_cfg_addr.name = "pcic_cfg_addr";
 	if ((pcic->pcic_config_space_addr =
-	    ioremap(regs[2].phys_addr, regs[2].reg_size * 2)) == 0) {
+	    ioremap(regs[2].phys_addr, regs[2].reg_size * 2)) == NULL) {
 		prom_printf("PCIC: Error, cannot map "
 			    "PCI Configuration Space Address.\n");
 		prom_halt();
@@ -337,7 +342,7 @@ int __init pcic_probe(void)
 	 */
 	pcic->pcic_res_cfg_data.name = "pcic_cfg_data";
 	if ((pcic->pcic_config_space_data =
-	    ioremap(regs[3].phys_addr, regs[3].reg_size * 2)) == 0) {
+	    ioremap(regs[3].phys_addr, regs[3].reg_size * 2)) == NULL) {
 		prom_printf("PCIC: Error, cannot map "
 			    "PCI Configuration Space Data.\n");
 		prom_halt();
@@ -349,8 +354,7 @@ int __init pcic_probe(void)
 	strcpy(pbm->prom_name, namebuf);
 
 	{
-		extern volatile int t_nmi[1];
-		extern int pcic_nmi_trap_patch[1];
+		extern int pcic_nmi_trap_patch[4];
 
 		t_nmi[0] = pcic_nmi_trap_patch[0];
 		t_nmi[1] = pcic_nmi_trap_patch[1];
@@ -435,8 +439,7 @@ int pcic_present(void)
 	return pcic0_up;
 }
 
-static int __devinit pdev_to_pnode(struct linux_pbm_info *pbm,
-				    struct pci_dev *pdev)
+static int pdev_to_pnode(struct linux_pbm_info *pbm, struct pci_dev *pdev)
 {
 	struct linux_prom_pci_registers regs[PROMREG_MAX];
 	int err;
@@ -523,6 +526,7 @@ static void
 pcic_fill_irq(struct linux_pcic *pcic, struct pci_dev *dev, int node)
 {
 	struct pcic_ca2irq *p;
+	unsigned int real_irq;
 	int i, ivec;
 	char namebuf[64];
 
@@ -532,7 +536,7 @@ pcic_fill_irq(struct linux_pcic *pcic, struct pci_dev *dev, int node)
 		prom_getstring(node, "name", namebuf, sizeof(namebuf));
 	}
 
-	if ((p = pcic->pcic_imap) == 0) {
+	if ((p = pcic->pcic_imap) == NULL) {
 		dev->irq = 0;
 		return;
 	}
@@ -551,26 +555,25 @@ pcic_fill_irq(struct linux_pcic *pcic, struct pci_dev *dev, int node)
 	i = p->pin;
 	if (i >= 0 && i < 4) {
 		ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO);
-		dev->irq = ivec >> (i << 2) & 0xF;
+		real_irq = ivec >> (i << 2) & 0xF;
 	} else if (i >= 4 && i < 8) {
 		ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI);
-		dev->irq = ivec >> ((i-4) << 2) & 0xF;
+		real_irq = ivec >> ((i-4) << 2) & 0xF;
 	} else {					/* Corrupted map */
 		printk("PCIC: BAD PIN %d\n", i); for (;;) {}
 	}
 /* P3 */ /* printk("PCIC: device %s pin %d ivec 0x%x irq %x\n", namebuf, i, ivec, dev->irq); */
 
-	/*
-	 * dev->irq=0 means PROM did not bother to program the upper
+	/* real_irq means PROM did not bother to program the upper
 	 * half of PCIC. This happens on JS-E with PROM 3.11, for instance.
 	 */
-	if (dev->irq == 0 || p->force) {
+	if (real_irq == 0 || p->force) {
 		if (p->irq == 0 || p->irq >= 15) {	/* Corrupted map */
 			printk("PCIC: BAD IRQ %d\n", p->irq); for (;;) {}
 		}
 		printk("PCIC: setting irq %d at pin %d for device %02x:%02x\n",
 		    p->irq, p->pin, dev->bus->number, dev->devfn);
-		dev->irq = p->irq;
+		real_irq = p->irq;
 
 		i = p->pin;
 		if (i >= 4) {
@@ -584,13 +587,14 @@ pcic_fill_irq(struct linux_pcic *pcic, struct pci_dev *dev, int node)
 			ivec |= p->irq << (i << 2);
 			writew(ivec, pcic->pcic_regs+PCI_INT_SELECT_LO);
 		}
- 	}
+	}
+	dev->irq = pcic_build_device_irq(NULL, real_irq);
 }
 
 /*
  * Normally called from {do_}pci_scan_bus...
  */
-void __devinit pcibios_fixup_bus(struct pci_bus *bus)
+void pcibios_fixup_bus(struct pci_bus *bus)
 {
 	struct pci_dev *dev;
 	int i, has_io, has_mem;
@@ -666,30 +670,6 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
 	}
 }
 
-/*
- * pcic_pin_to_irq() is exported to bus probing code
- */
-unsigned int
-pcic_pin_to_irq(unsigned int pin, const char *name)
-{
-	struct linux_pcic *pcic = &pcic0;
-	unsigned int irq;
-	unsigned int ivec;
-
-	if (pin < 4) {
-		ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO);
-		irq = ivec >> (pin << 2) & 0xF;
-	} else if (pin < 8) {
-		ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI);
-		irq = ivec >> ((pin-4) << 2) & 0xF;
-	} else {					/* Corrupted map */
-		printk("PCIC: BAD PIN %d FOR %s\n", pin, name);
-		for (;;) {}	/* XXX Cannot panic properly in case of PROLL */
-	}
-/* P3 */ /* printk("PCIC: dev %s pin %d ivec 0x%x irq %x\n", name, pin, ivec, irq); */
-	return irq;
-}
-
 /* Makes compiler happy */
 static volatile int pcic_timer_dummy;
 
@@ -698,43 +678,46 @@ static void pcic_clear_clock_irq(void)
 	pcic_timer_dummy = readl(pcic0.pcic_regs+PCI_SYS_LIMIT);
 }
 
-static irqreturn_t pcic_timer_handler (int irq, void *h)
+/* CPU frequency is 100 MHz, timer increments every 4 CPU clocks */
+#define USECS_PER_JIFFY  (1000000 / HZ)
+#define TICK_TIMER_LIMIT ((100 * 1000000 / 4) / HZ)
+
+static unsigned int pcic_cycles_offset(void)
 {
-	write_seqlock(&xtime_lock);	/* Dummy, to show that we remember */
-	pcic_clear_clock_irq();
-	do_timer(1);
-	write_sequnlock(&xtime_lock);
-#ifndef CONFIG_SMP
-	update_process_times(user_mode(get_irq_regs()));
-#endif
-	return IRQ_HANDLED;
-}
+	u32 value, count;
 
-#define USECS_PER_JIFFY  10000  /* We have 100HZ "standard" timer for sparc */
-#define TICK_TIMER_LIMIT ((100*1000000/4)/100)
+	value = readl(pcic0.pcic_regs + PCI_SYS_COUNTER);
+	count = value & ~PCI_SYS_COUNTER_OVERFLOW;
 
-u32 pci_gettimeoffset(void)
-{
+	if (value & PCI_SYS_COUNTER_OVERFLOW)
+		count += TICK_TIMER_LIMIT;
 	/*
-	 * We divide all by 100
+	 * We divide all by HZ
 	 * to have microsecond resolution and to avoid overflow
 	 */
-	unsigned long count =
-	    readl(pcic0.pcic_regs+PCI_SYS_COUNTER) & ~PCI_SYS_COUNTER_OVERFLOW;
-	count = ((count/100)*USECS_PER_JIFFY) / (TICK_TIMER_LIMIT/100);
-	return count * 1000;
-}
+	count = ((count / HZ) * USECS_PER_JIFFY) / (TICK_TIMER_LIMIT / HZ);
 
+	/* Coordinate with the sparc_config.clock_rate setting */
+	return count * 2;
+}
 
 void __init pci_time_init(void)
 {
 	struct linux_pcic *pcic = &pcic0;
 	unsigned long v;
 	int timer_irq, irq;
+	int err;
 
-	do_arch_gettimeoffset = pci_gettimeoffset;
-
-	btfixup();
+#ifndef CONFIG_SMP
+	/*
+	 * The clock_rate is in SBUS dimension.
+	 * We take into account this in pcic_cycles_offset()
+	 */
+	sparc_config.clock_rate = SBUS_CLOCK_RATE / HZ;
+	sparc_config.features |= FEAT_L10_CLOCKEVENT;
+#endif
+	sparc_config.features |= FEAT_L10_CLOCKSOURCE;
+	sparc_config.get_cycles_offset = pcic_cycles_offset;
 
 	writel (TICK_TIMER_LIMIT, pcic->pcic_regs+PCI_SYS_LIMIT);
 	/* PROM should set appropriate irq */
@@ -742,9 +725,10 @@ void __init pci_time_init(void)
 	timer_irq = PCI_COUNTER_IRQ_SYS(v);
 	writel (PCI_COUNTER_IRQ_SET(timer_irq, 0),
 		pcic->pcic_regs+PCI_COUNTER_IRQ);
-	irq = request_irq(timer_irq, pcic_timer_handler,
-			  (IRQF_DISABLED | SA_STATIC_ALLOC), "timer", NULL);
-	if (irq) {
+	irq = pcic_build_device_irq(NULL, timer_irq);
+	err = request_irq(irq, timer_interrupt,
+			  IRQF_TIMER, "timer", NULL);
+	if (err) {
 		prom_printf("time_init: unable to attach IRQ%d\n", timer_irq);
 		prom_halt();
 	}
@@ -758,14 +742,6 @@ static void watchdog_reset() {
 }
 #endif
 
-/*
- * Other archs parse arguments here.
- */
-char * __devinit pcibios_setup(char *str)
-{
-	return str;
-}
-
 resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
@@ -783,7 +759,7 @@ int pcibios_enable_device(struct pci_dev *pdev, int mask)
 void pcic_nmi(unsigned int pend, struct pt_regs *regs)
 {
 
-	pend = flip_dword(pend);
+	pend = swab32(pend);
 
 	if (!pcic_speculative || (pend & PCI_SYS_INT_PENDING_PIO) == 0) {
 		/*
@@ -805,143 +781,74 @@ static inline unsigned long get_irqmask(int irq_nr)
 	return 1 << irq_nr;
 }
 
-static void pcic_disable_irq(unsigned int irq_nr)
+static void pcic_mask_irq(struct irq_data *data)
 {
 	unsigned long mask, flags;
 
-	mask = get_irqmask(irq_nr);
+	mask = (unsigned long)data->chip_data;
 	local_irq_save(flags);
 	writel(mask, pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_SET);
 	local_irq_restore(flags);
 }
 
-static void pcic_enable_irq(unsigned int irq_nr)
+static void pcic_unmask_irq(struct irq_data *data)
 {
 	unsigned long mask, flags;
 
-	mask = get_irqmask(irq_nr);
+	mask = (unsigned long)data->chip_data;
 	local_irq_save(flags);
 	writel(mask, pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_CLEAR);
 	local_irq_restore(flags);
 }
 
-static void pcic_load_profile_irq(int cpu, unsigned int limit)
-{
-	printk("PCIC: unimplemented code: FILE=%s LINE=%d", __FILE__, __LINE__);
-}
-
-/* We assume the caller has disabled local interrupts when these are called,
- * or else very bizarre behavior will result.
- */
-static void pcic_disable_pil_irq(unsigned int pil)
+static unsigned int pcic_startup_irq(struct irq_data *data)
 {
-	writel(get_irqmask(pil), pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_SET);
+	irq_link(data->irq);
+	pcic_unmask_irq(data);
+	return 0;
 }
 
-static void pcic_enable_pil_irq(unsigned int pil)
-{
-	writel(get_irqmask(pil), pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_CLEAR);
-}
+static struct irq_chip pcic_irq = {
+	.name		= "pcic",
+	.irq_startup	= pcic_startup_irq,
+	.irq_mask	= pcic_mask_irq,
+	.irq_unmask	= pcic_unmask_irq,
+};
 
-void __init sun4m_pci_init_IRQ(void)
+unsigned int pcic_build_device_irq(struct platform_device *op,
+                                   unsigned int real_irq)
 {
-	BTFIXUPSET_CALL(enable_irq, pcic_enable_irq, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(disable_irq, pcic_disable_irq, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(enable_pil_irq, pcic_enable_pil_irq, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(disable_pil_irq, pcic_disable_pil_irq, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(clear_clock_irq, pcic_clear_clock_irq, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(load_profile_irq, pcic_load_profile_irq, BTFIXUPCALL_NORM);
-}
+	unsigned int irq;
+	unsigned long mask;
 
-int pcibios_assign_resource(struct pci_dev *pdev, int resource)
-{
-	return -ENXIO;
-}
+	irq = 0;
+	mask = get_irqmask(real_irq);
+	if (mask == 0)
+		goto out;
 
-struct device_node *pci_device_to_OF_node(struct pci_dev *pdev)
-{
-	struct pcidev_cookie *pc = pdev->sysdata;
+	irq = irq_alloc(real_irq, real_irq);
+	if (irq == 0)
+		goto out;
 
-	return pc->prom_node;
-}
-EXPORT_SYMBOL(pci_device_to_OF_node);
+	irq_set_chip_and_handler_name(irq, &pcic_irq,
+	                              handle_level_irq, "PCIC");
+	irq_set_chip_data(irq, (void *)mask);
 
-/*
- * This probably belongs here rather than ioport.c because
- * we do not want this crud linked into SBus kernels.
- * Also, think for a moment about likes of floppy.c that
- * include architecture specific parts. They may want to redefine ins/outs.
- *
- * We do not use horrible macros here because we want to
- * advance pointer by sizeof(size).
- */
-void outsb(unsigned long addr, const void *src, unsigned long count)
-{
-	while (count) {
-		count -= 1;
-		outb(*(const char *)src, addr);
-		src += 1;
-		/* addr += 1; */
-	}
-}
-EXPORT_SYMBOL(outsb);
-
-void outsw(unsigned long addr, const void *src, unsigned long count)
-{
-	while (count) {
-		count -= 2;
-		outw(*(const short *)src, addr);
-		src += 2;
-		/* addr += 2; */
-	}
-}
-EXPORT_SYMBOL(outsw);
-
-void outsl(unsigned long addr, const void *src, unsigned long count)
-{
-	while (count) {
-		count -= 4;
-		outl(*(const long *)src, addr);
-		src += 4;
-		/* addr += 4; */
-	}
+out:
+	return irq;
 }
-EXPORT_SYMBOL(outsl);
 
-void insb(unsigned long addr, void *dst, unsigned long count)
-{
-	while (count) {
-		count -= 1;
-		*(unsigned char *)dst = inb(addr);
-		dst += 1;
-		/* addr += 1; */
-	}
-}
-EXPORT_SYMBOL(insb);
 
-void insw(unsigned long addr, void *dst, unsigned long count)
+static void pcic_load_profile_irq(int cpu, unsigned int limit)
 {
-	while (count) {
-		count -= 2;
-		*(unsigned short *)dst = inw(addr);
-		dst += 2;
-		/* addr += 2; */
-	}
+	printk("PCIC: unimplemented code: FILE=%s LINE=%d", __FILE__, __LINE__);
 }
-EXPORT_SYMBOL(insw);
 
-void insl(unsigned long addr, void *dst, unsigned long count)
+void __init sun4m_pci_init_IRQ(void)
 {
-	while (count) {
-		count -= 4;
-		/*
-		 * XXX I am sure we are in for an unaligned trap here.
-		 */
-		*(unsigned long *)dst = inl(addr);
-		dst += 4;
-		/* addr += 4; */
-	}
+	sparc_config.build_device_irq = pcic_build_device_irq;
+	sparc_config.clear_clock_irq  = pcic_clear_clock_irq;
+	sparc_config.load_profile_irq = pcic_load_profile_irq;
 }
-EXPORT_SYMBOL(insl);
 
 subsys_initcall(pcic_init);