extern acpi_resource *acpi_get_crs_next(acpi_buffer *, int *);
extern acpi_resource_data *acpi_get_crs_type(acpi_buffer *, int *, int);
extern void acpi_dispose_crs(acpi_buffer *);
-extern acpi_status acpi_cf_evaluate_method(acpi_handle, UINT8 *, NATIVE_UINT *);
static acpi_status
hp_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
}
extern void sba_init(void);
-
-void
-hpzx1_pci_fixup (int phase)
-{
- if (phase == 0)
- hpzx1_acpi_dev_init();
- iosapic_pci_fixup(phase);
- if (phase == 1)
- sba_init();
-}
-/*
- * Misc. support for HP zx1 chipset support
- *
- * Copyright (C) 2002 Hewlett-Packard Co
- * Copyright (C) 2002 Alex Williamson <alex_williamson@hp.com>
- * Copyright (C) 2002 Bjorn Helgaas <bjorn_helgaas@hp.com>
- */
-
-
-#include <linux/config.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/acpi.h>
-#include <asm/iosapic.h>
-#include <asm/efi.h>
-
-#include "../drivers/acpi/include/platform/acgcc.h"
-#include "../drivers/acpi/include/actypes.h"
-#include "../drivers/acpi/include/acexcep.h"
-#include "../drivers/acpi/include/acpixf.h"
-#include "../drivers/acpi/include/actbl.h"
-#include "../drivers/acpi/include/acconfig.h"
-#include "../drivers/acpi/include/acmacros.h"
-#include "../drivers/acpi/include/aclocal.h"
-#include "../drivers/acpi/include/acobject.h"
-#include "../drivers/acpi/include/acstruct.h"
-#include "../drivers/acpi/include/acnamesp.h"
-#include "../drivers/acpi/include/acutils.h"
-
-#define PFX "hpzx1: "
-
-struct fake_pci_dev {
- struct fake_pci_dev *next;
- unsigned char bus;
- unsigned int devfn;
- int sizing; // in middle of BAR sizing operation?
- unsigned long csr_base;
- unsigned int csr_size;
- unsigned long mapped_csrs; // ioremapped
-};
-
-static struct fake_pci_dev *fake_pci_head, **fake_pci_tail = &fake_pci_head;
-
-static struct pci_ops orig_pci_ops;
-
-static inline struct fake_pci_dev *
-fake_pci_find_slot(unsigned char bus, unsigned int devfn)
-{
- struct fake_pci_dev *dev;
-
- for (dev = fake_pci_head; dev; dev = dev->next)
- if (dev->bus == bus && dev->devfn == devfn)
- return dev;
- return NULL;
-}
-
-static struct fake_pci_dev *
-alloc_fake_pci_dev(void)
-{
- struct fake_pci_dev *dev;
-
- dev = kmalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev)
- return NULL;
-
- memset(dev, 0, sizeof(*dev));
-
- *fake_pci_tail = dev;
- fake_pci_tail = &dev->next;
-
- return dev;
-}
-
-#define HP_CFG_RD(sz, bits, name) \
-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); \
- \
- switch (where) { \
- case PCI_COMMAND: \
- *value = read##sz(fake_dev->mapped_csrs + where); \
- *value |= PCI_COMMAND_MEMORY; /* SBA omits this */ \
- break; \
- case PCI_BASE_ADDRESS_0: \
- if (fake_dev->sizing) \
- *value = ~(fake_dev->csr_size - 1); \
- else \
- *value = (fake_dev->csr_base & \
- PCI_BASE_ADDRESS_MEM_MASK) | \
- PCI_BASE_ADDRESS_SPACE_MEMORY; \
- fake_dev->sizing = 0; \
- break; \
- default: \
- *value = read##sz(fake_dev->mapped_csrs + where); \
- break; \
- } \
- return PCIBIOS_SUCCESSFUL; \
-}
-#define HP_CFG_WR(sz, bits, name) \
-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); \
- \
- switch (where) { \
- case PCI_BASE_ADDRESS_0: \
- if (value == ~0) \
- fake_dev->sizing = 1; \
- break; \
- default: \
- write##sz(value, fake_dev->mapped_csrs + where); \
- break; \
- } \
- return PCIBIOS_SUCCESSFUL; \
-}
-
-HP_CFG_RD(b, 8, read_byte)
-HP_CFG_RD(w, 16, read_word)
-HP_CFG_RD(l, 32, read_dword)
-HP_CFG_WR(b, 8, write_byte)
-HP_CFG_WR(w, 16, write_word)
-HP_CFG_WR(l, 32, write_dword)
-
-static struct pci_ops hp_pci_conf = {
- hp_cfg_readb,
- hp_cfg_readw,
- hp_cfg_readl,
- hp_cfg_writeb,
- hp_cfg_writew,
- hp_cfg_writel,
-};
-
-/*
- * Assume we'll never have a physical slot higher than 0x10, so we can
- * use slots above that for "fake" PCI devices to represent things
- * that only show up in the ACPI namespace.
- */
-#define HP_MAX_SLOT 0x10
-
-static struct fake_pci_dev *
-hpzx1_fake_pci_dev(unsigned long addr, unsigned int bus, unsigned int size)
-{
- struct fake_pci_dev *dev;
- int slot;
-
- // Note: lspci thinks 0x1f is invalid
- for (slot = 0x1e; slot > HP_MAX_SLOT; slot--) {
- if (!fake_pci_find_slot(bus, PCI_DEVFN(slot, 0)))
- break;
- }
- if (slot == HP_MAX_SLOT) {
- printk(KERN_ERR PFX
- "no slot space for device (0x%p) on bus 0x%02x\n",
- (void *) addr, bus);
- return NULL;
- }
-
- dev = alloc_fake_pci_dev();
- if (!dev) {
- printk(KERN_ERR PFX
- "no memory for device (0x%p) on bus 0x%02x\n",
- (void *) addr, bus);
- return NULL;
- }
-
- dev->bus = bus;
- dev->devfn = PCI_DEVFN(slot, 0);
- dev->csr_base = addr;
- dev->csr_size = size;
-
- /*
- * Drivers should ioremap what they need, but we have to do
- * it here, too, so PCI config accesses work.
- */
- dev->mapped_csrs = (unsigned long) ioremap(dev->csr_base, dev->csr_size);
-
- return dev;
-}
-
-typedef struct {
- u8 guid_id;
- u8 guid[16];
- u8 csr_base[8];
- u8 csr_length[8];
-} acpi_hp_vendor_long;
-
-#define HP_CCSR_LENGTH 0x21
-#define HP_CCSR_TYPE 0x2
-#define HP_CCSR_GUID \
- ((efi_guid_t) { 0x69e9adf9, 0x924f, 0xab5f, { 0xf6, 0x4a, 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad }})
-
-extern acpi_status acpi_get_crs(acpi_handle, acpi_buffer *);
-extern acpi_resource *acpi_get_crs_next(acpi_buffer *, int *);
-extern acpi_resource_data *acpi_get_crs_type(acpi_buffer *, int *, int);
-extern void acpi_dispose_crs(acpi_buffer *);
-extern acpi_status acpi_cf_evaluate_method(acpi_handle, UINT8 *, NATIVE_UINT *);
-
-static acpi_status
-hp_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
-{
- int i, offset = 0;
- acpi_status status;
- acpi_buffer buf;
- acpi_resource_vendor *res;
- acpi_hp_vendor_long *hp_res;
- efi_guid_t vendor_guid;
-
- *csr_base = 0;
- *csr_length = 0;
-
- status = acpi_get_crs(obj, &buf);
- if (status != AE_OK) {
- printk(KERN_ERR PFX "Unable to get _CRS data on object\n");
- return status;
- }
-
- res = (acpi_resource_vendor *)acpi_get_crs_type(&buf, &offset, ACPI_RSTYPE_VENDOR);
- if (!res) {
- printk(KERN_ERR PFX "Failed to find config space for device\n");
- acpi_dispose_crs(&buf);
- return AE_NOT_FOUND;
- }
-
- hp_res = (acpi_hp_vendor_long *)(res->reserved);
-
- if (res->length != HP_CCSR_LENGTH || hp_res->guid_id != HP_CCSR_TYPE) {
- printk(KERN_ERR PFX "Unknown Vendor data\n");
- acpi_dispose_crs(&buf);
- return AE_TYPE; /* Revisit error? */
- }
-
- memcpy(&vendor_guid, hp_res->guid, sizeof(efi_guid_t));
- if (efi_guidcmp(vendor_guid, HP_CCSR_GUID) != 0) {
- printk(KERN_ERR PFX "Vendor GUID does not match\n");
- acpi_dispose_crs(&buf);
- return AE_TYPE; /* Revisit error? */
- }
-
- for (i = 0 ; i < 8 ; i++) {
- *csr_base |= ((u64)(hp_res->csr_base[i]) << (i * 8));
- *csr_length |= ((u64)(hp_res->csr_length[i]) << (i * 8));
- }
-
- acpi_dispose_crs(&buf);
-
- return AE_OK;
-}
-
-static acpi_status
-hpzx1_sba_probe(acpi_handle obj, u32 depth, void *context, void **ret)
-{
- u64 csr_base = 0, csr_length = 0;
- char *name = context;
- struct fake_pci_dev *dev;
- acpi_status status;
-
- status = hp_csr_space(obj, &csr_base, &csr_length);
-
- if (status != AE_OK)
- return status;
-
- /*
- * Only SBA shows up in ACPI namespace, so its CSR space
- * includes both SBA and IOC. Make SBA and IOC show up
- * separately in PCI space.
- */
- if ((dev = hpzx1_fake_pci_dev(csr_base, 0, 0x1000)))
- printk(KERN_INFO PFX "%s SBA at 0x%lx; pci dev %02x:%02x.%d\n",
- name, csr_base, dev->bus,
- PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
- if ((dev = hpzx1_fake_pci_dev(csr_base + 0x1000, 0, 0x1000)))
- printk(KERN_INFO PFX "%s IOC at 0x%lx; pci dev %02x:%02x.%d\n",
- name, csr_base + 0x1000, dev->bus,
- PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
-
- return AE_OK;
-}
-
-static acpi_status
-hpzx1_lba_probe(acpi_handle obj, u32 depth, void *context, void **ret)
-{
- acpi_status status;
- u64 csr_base = 0, csr_length = 0;
- char *name = context;
- NATIVE_UINT busnum = 0;
- struct fake_pci_dev *dev;
-
- status = hp_csr_space(obj, &csr_base, &csr_length);
-
- if (status != AE_OK)
- return status;
-
- status = acpi_cf_evaluate_method(obj, METHOD_NAME__BBN, &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
- }
-
- if ((dev = hpzx1_fake_pci_dev(csr_base, busnum, csr_length)))
- printk(KERN_INFO PFX "%s LBA at 0x%lx, _BBN 0x%02x; "
- "pci dev %02x:%02x.%d\n",
- name, csr_base, busnum, dev->bus,
- PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
-
- return AE_OK;
-}
-
-static void
-hpzx1_acpi_dev_init(void)
-{
- extern struct pci_ops pci_conf;
-
- /*
- * Make fake PCI devices for the following hardware in the
- * ACPI namespace. This makes it more convenient for drivers
- * because they can claim these devices based on PCI
- * information, rather than needing to know about ACPI. The
- * 64-bit "HPA" space for this hardware is available as BAR
- * 0/1.
- *
- * HWP0001: Single IOC SBA w/o IOC in namespace
- * HWP0002: LBA device
- * HWP0003: AGP LBA device
- */
- acpi_get_devices("HWP0001", hpzx1_sba_probe, "HWP0001", NULL);
-#ifdef CONFIG_IA64_HP_PROTO
- if (fake_pci_tail != &fake_pci_head) {
-#endif
- acpi_get_devices("HWP0002", hpzx1_lba_probe, "HWP0002", NULL);
- acpi_get_devices("HWP0003", hpzx1_lba_probe, "HWP0003", NULL);
-
-#ifdef CONFIG_IA64_HP_PROTO
- }
-
-#define ZX1_FUNC_ID_VALUE (PCI_DEVICE_ID_HP_ZX1_SBA << 16) | PCI_VENDOR_ID_HP
- /*
- * Early protos don't have bridges in the ACPI namespace, so
- * if we didn't find anything, add the things we know are
- * there.
- */
- if (fake_pci_tail == &fake_pci_head) {
- u64 hpa, csr_base;
- struct fake_pci_dev *dev;
-
- csr_base = 0xfed00000UL;
- hpa = (u64) ioremap(csr_base, 0x1000);
- if (__raw_readl(hpa) == ZX1_FUNC_ID_VALUE) {
- if ((dev = hpzx1_fake_pci_dev(csr_base, 0, 0x1000)))
- printk(KERN_INFO PFX "HWP0001 SBA at 0x%lx; "
- "pci dev %02x:%02x.%d\n", csr_base,
- dev->bus, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn));
- if ((dev = hpzx1_fake_pci_dev(csr_base + 0x1000, 0,
- 0x1000)))
- printk(KERN_INFO PFX "HWP0001 IOC at 0x%lx; "
- "pci dev %02x:%02x.%d\n",
- csr_base + 0x1000,
- dev->bus, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn));
-
- csr_base = 0xfed24000UL;
- iounmap(hpa);
- hpa = (u64) ioremap(csr_base, 0x1000);
- if ((dev = hpzx1_fake_pci_dev(csr_base, 0x40, 0x1000)))
- printk(KERN_INFO PFX "HWP0003 AGP LBA at "
- "0x%lx; pci dev %02x:%02x.%d\n",
- csr_base,
- dev->bus, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn));
- }
- iounmap(hpa);
- }
-#endif
-
- if (fake_pci_tail == &fake_pci_head)
- return;
-
- /*
- * Replace PCI ops, but only if we made fake devices.
- */
- orig_pci_ops = pci_conf;
- pci_conf = hp_pci_conf;
-}
-
-extern void sba_init(void);
-
void
hpzx1_pci_fixup (int phase)
{
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