ia64: Fix ACPI/IOSAPIC breakage introduced by big ACPI update.

arch/ia64/hp/zx1/hpzx1_misc.c

@@ -42,7 +42,7 @@ struct fake_pci_dev {
 
 static struct fake_pci_dev *fake_pci_head, **fake_pci_tail = &fake_pci_head;
 
-static struct pci_ops orig_pci_ops;
+static struct pci_ops *orig_pci_ops;
 
 static inline struct fake_pci_dev *
 fake_pci_find_slot(unsigned char bus, unsigned int devfn)
@@ -77,7 +77,7 @@ static int hp_cfg_read##sz (struct pci_dev *dev, int where, u##bits *value) \
 { \
 	struct fake_pci_dev *fake_dev; \
 	if (!(fake_dev = fake_pci_find_slot(dev->bus->number, dev->devfn))) \
-		return orig_pci_ops.name(dev, where, value); \
+		return orig_pci_ops->name(dev, where, value); \
 	\
 	switch (where) { \
 	case PCI_COMMAND: \
@@ -105,7 +105,7 @@ static int hp_cfg_write##sz (struct pci_dev *dev, int where, u##bits value) \
 { \
 	struct fake_pci_dev *fake_dev; \
 	if (!(fake_dev = fake_pci_find_slot(dev->bus->number, dev->devfn))) \
-		return orig_pci_ops.name(dev, where, value); \
+		return orig_pci_ops->name(dev, where, value); \
 	\
 	switch (where) { \
 	case PCI_BASE_ADDRESS_0: \
@@ -295,7 +295,7 @@ hpzx1_lba_probe(acpi_handle obj, u32 depth, void *context, void **ret)
 	if (status != AE_OK)
 		return status;
 
-	status = acpi_cf_evaluate_method(obj, METHOD_NAME__BBN, &busnum);
+	status = acpi_evaluate_integer(obj, METHOD_NAME__BBN, NULL, &busnum);
 	if (ACPI_FAILURE(status)) {
 		printk(KERN_ERR PFX "evaluate _BBN fail=0x%x\n", status);
 		busnum = 0;	// no _BBN; stick it on bus 0
@@ -313,7 +313,7 @@ hpzx1_lba_probe(acpi_handle obj, u32 depth, void *context, void **ret)
 static void
 hpzx1_acpi_dev_init(void)
 {
-	extern struct pci_ops pci_conf;
+	extern struct pci_ops *pci_root_ops;
 
 	/*
 	 * Make fake PCI devices for the following hardware in the
@@ -383,8 +383,8 @@ hpzx1_acpi_dev_init(void)
 	/*
 	 * Replace PCI ops, but only if we made fake devices.
 	 */
-	orig_pci_ops = pci_conf;
-	pci_conf = hp_pci_conf;
+	orig_pci_ops = pci_root_ops;
+	pci_root_ops = &hp_pci_conf;
 }
 
 extern void sba_init(void);

arch/ia64/kernel/acpi.c

@@ -56,18 +56,43 @@ asm (".weak iosapic_version");
 void (*pm_idle) (void);
 void (*pm_power_off) (void);
 
-
-/*
- * TBD: Should go away once we have an ACPI parser.
- */
 const char *
 acpi_get_sysname (void)
 {
 #ifdef CONFIG_IA64_GENERIC
-	return "hpsim";
+	unsigned long rsdp_phys = 0;
+	struct acpi20_table_rsdp *rsdp;
+	struct acpi_table_xsdt *xsdt;
+	struct acpi_table_header *hdr;
+
+	if ((0 != acpi_find_rsdp(&rsdp_phys)) || !rsdp_phys) {
+		printk("ACPI 2.0 RSDP not found, default to \"dig\"\n");
+		return "dig";
+	}
+
+	rsdp = (struct acpi20_table_rsdp *) __va(rsdp_phys);
+	if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1)) {
+		printk("ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
+		return "dig";
+	}
+
+	xsdt = (struct acpi_table_xsdt *) __va(rsdp->xsdt_address);
+	hdr = &xsdt->header;
+	if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1)) {
+		printk("ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
+		return "dig";
+	}
+
+	if (!strcmp(hdr->oem_id, "HP")) {
+		return "hpzx1";
+	}
+
+	return "dig";
 #else
 # if defined (CONFIG_IA64_HP_SIM)
 	return "hpsim";
+# elif defined (CONFIG_IA64_HP_ZX1)
+	return "hpzx1";
 # elif defined (CONFIG_IA64_SGI_SN1)
 	return "sn1";
 # elif defined (CONFIG_IA64_SGI_SN2)
@@ -80,6 +105,69 @@ acpi_get_sysname (void)
 #endif
 }
 
+#ifdef CONFIG_ACPI
+
+/**
+ * acpi_get_crs - Return the current resource settings for a device
+ * obj: A handle for this device
+ * buf: A buffer to be populated by this call.
+ *
+ * Pass a valid handle, typically obtained by walking the namespace and a
+ * pointer to an allocated buffer, and this function will fill in the buffer
+ * with a list of acpi_resource structures.
+ */
+acpi_status
+acpi_get_crs (acpi_handle obj, acpi_buffer *buf)
+{
+	acpi_status result;
+	buf->length = 0;
+	buf->pointer = NULL;
+
+	result = acpi_get_current_resources(obj, buf);
+	if (result != AE_BUFFER_OVERFLOW)
+		return result;
+	buf->pointer = kmalloc(buf->length, GFP_KERNEL);
+	if (!buf->pointer)
+		return -ENOMEM;
+
+	result = acpi_get_current_resources(obj, buf);
+
+	return result;
+}
+
+acpi_resource *
+acpi_get_crs_next (acpi_buffer *buf, int *offset)
+{
+	acpi_resource *res;
+
+	if (*offset >= buf->length)
+		return NULL;
+
+	res = buf->pointer + *offset;
+	*offset += res->length;
+	return res;
+}
+
+acpi_resource_data *
+acpi_get_crs_type (acpi_buffer *buf, int *offset, int type)
+{
+	for (;;) {
+		acpi_resource *res = acpi_get_crs_next(buf, offset);
+		if (!res)
+			return NULL;
+		if (res->id == type)
+			return &res->data;
+	}
+}
+
+void
+acpi_dispose_crs (acpi_buffer *buf)
+{
+	kfree(buf->pointer);
+}
+
+#endif /* CONFIG_ACPI */
+
 #ifdef CONFIG_ACPI_BOOT
 
 #define ACPI_MAX_PLATFORM_IRQS	256

arch/ia64/kernel/iosapic.c

@@ -23,6 +23,7 @@
  *                              iosapic_set_affinity(), initializations for
  *                              /proc/irq/#/smp_affinity
  * 02/04/02	P. Diefenbaugh	Cleaned up ACPI PCI IRQ routing.
+ * 02/04/18	J.I. Lee	bug fix in iosapic_init_pci_irq
  */
 /*
  * Here is what the interrupt logic between a PCI device and the CPU looks like:
@@ -676,6 +677,11 @@ iosapic_init_pci_irq (void)
 		       pci_irq.route[i].bus, pci_irq.route[i].pci_id>>16, pci_irq.route[i].pin,
 		       iosapic_irq[vector].base_irq + iosapic_irq[vector].pin, vector);
 #endif
+
+		/*
+		 * Forget not to program the IOSAPIC RTE per ACPI _PRT
+		 */
+		set_rte(vector, (ia64_get_lid() >> 16) & 0xffff);
 	}
 }
 

include/asm-ia64/acpi.h

@@ -32,6 +32,7 @@
 
 #define __acpi_map_table(phys_addr, size) __va(phys_addr)
 
+const char *acpi_get_sysname (void);
 int acpi_boot_init (char *cdline);
 int acpi_find_rsdp (unsigned long *phys_addr);
 int acpi_request_vector (u32 int_type);

include/asm-ia64/page.h

@@ -71,7 +71,7 @@ do {						\
 #ifdef CONFIG_IA64_GENERIC
 # include <asm/machvec.h>
 # define virt_to_page(kaddr)	(mem_map + platform_map_nr(kaddr))
-# define page_to_phys(page)	XXX fix me
+# define page_to_phys(page)	((page - mem_map) << PAGE_SHIFT)
 #elif defined (CONFIG_IA64_SGI_SN1)
 # ifndef CONFIG_DISCONTIGMEM
 #  define virt_to_page(kaddr)	(mem_map + MAP_NR_DENSE(kaddr))