188 lines
5.3 KiB
C
188 lines
5.3 KiB
C
/* pci_impl.h: Helper definitions for PCI controller support.
|
|
*
|
|
* Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
|
|
*/
|
|
|
|
#ifndef PCI_IMPL_H
|
|
#define PCI_IMPL_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/msi.h>
|
|
#include <linux/of_device.h>
|
|
#include <asm/io.h>
|
|
#include <asm/prom.h>
|
|
#include <asm/iommu.h>
|
|
|
|
/* The abstraction used here is that there are PCI controllers,
|
|
* each with one (Sabre) or two (PSYCHO/SCHIZO) PCI bus modules
|
|
* underneath. Each PCI bus module uses an IOMMU (shared by both
|
|
* PBMs of a controller, or per-PBM), and if a streaming buffer
|
|
* is present, each PCI bus module has it's own. (ie. the IOMMU
|
|
* might be shared between PBMs, the STC is never shared)
|
|
* Furthermore, each PCI bus module controls it's own autonomous
|
|
* PCI bus.
|
|
*/
|
|
|
|
#define PCI_STC_FLUSHFLAG_INIT(STC) \
|
|
(*((STC)->strbuf_flushflag) = 0UL)
|
|
#define PCI_STC_FLUSHFLAG_SET(STC) \
|
|
(*((STC)->strbuf_flushflag) != 0UL)
|
|
|
|
#ifdef CONFIG_PCI_MSI
|
|
struct pci_pbm_info;
|
|
struct sparc64_msiq_ops {
|
|
int (*get_head)(struct pci_pbm_info *pbm, unsigned long msiqid,
|
|
unsigned long *head);
|
|
int (*dequeue_msi)(struct pci_pbm_info *pbm, unsigned long msiqid,
|
|
unsigned long *head, unsigned long *msi);
|
|
int (*set_head)(struct pci_pbm_info *pbm, unsigned long msiqid,
|
|
unsigned long head);
|
|
int (*msi_setup)(struct pci_pbm_info *pbm, unsigned long msiqid,
|
|
unsigned long msi, int is_msi64);
|
|
int (*msi_teardown)(struct pci_pbm_info *pbm, unsigned long msi);
|
|
int (*msiq_alloc)(struct pci_pbm_info *pbm);
|
|
void (*msiq_free)(struct pci_pbm_info *pbm);
|
|
int (*msiq_build_irq)(struct pci_pbm_info *pbm, unsigned long msiqid,
|
|
unsigned long devino);
|
|
};
|
|
|
|
void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
|
|
const struct sparc64_msiq_ops *ops);
|
|
|
|
struct sparc64_msiq_cookie {
|
|
struct pci_pbm_info *pbm;
|
|
unsigned long msiqid;
|
|
};
|
|
#endif
|
|
|
|
struct pci_pbm_info {
|
|
struct pci_pbm_info *next;
|
|
struct pci_pbm_info *sibling;
|
|
int index;
|
|
|
|
/* Physical address base of controller registers. */
|
|
unsigned long controller_regs;
|
|
|
|
/* Physical address base of PBM registers. */
|
|
unsigned long pbm_regs;
|
|
|
|
/* Physical address of DMA sync register, if any. */
|
|
unsigned long sync_reg;
|
|
|
|
/* Opaque 32-bit system bus Port ID. */
|
|
u32 portid;
|
|
|
|
/* Opaque 32-bit handle used for hypervisor calls. */
|
|
u32 devhandle;
|
|
|
|
/* Chipset version information. */
|
|
int chip_type;
|
|
#define PBM_CHIP_TYPE_SABRE 1
|
|
#define PBM_CHIP_TYPE_PSYCHO 2
|
|
#define PBM_CHIP_TYPE_SCHIZO 3
|
|
#define PBM_CHIP_TYPE_SCHIZO_PLUS 4
|
|
#define PBM_CHIP_TYPE_TOMATILLO 5
|
|
int chip_version;
|
|
int chip_revision;
|
|
|
|
/* Name used for top-level resources. */
|
|
const char *name;
|
|
|
|
/* OBP specific information. */
|
|
struct platform_device *op;
|
|
u64 ino_bitmap;
|
|
|
|
/* PBM I/O and Memory space resources. */
|
|
struct resource io_space;
|
|
struct resource mem_space;
|
|
struct resource mem64_space;
|
|
struct resource busn;
|
|
|
|
/* Base of PCI Config space, can be per-PBM or shared. */
|
|
unsigned long config_space;
|
|
|
|
/* This will be 12 on PCI-E controllers, 8 elsewhere. */
|
|
unsigned long config_space_reg_bits;
|
|
|
|
unsigned long pci_afsr;
|
|
unsigned long pci_afar;
|
|
unsigned long pci_csr;
|
|
|
|
/* State of 66MHz capabilities on this PBM. */
|
|
int is_66mhz_capable;
|
|
int all_devs_66mhz;
|
|
|
|
#ifdef CONFIG_PCI_MSI
|
|
/* MSI info. */
|
|
u32 msiq_num;
|
|
u32 msiq_ent_count;
|
|
u32 msiq_first;
|
|
u32 msiq_first_devino;
|
|
u32 msiq_rotor;
|
|
struct sparc64_msiq_cookie *msiq_irq_cookies;
|
|
u32 msi_num;
|
|
u32 msi_first;
|
|
u32 msi_data_mask;
|
|
u32 msix_data_width;
|
|
u64 msi32_start;
|
|
u64 msi64_start;
|
|
u32 msi32_len;
|
|
u32 msi64_len;
|
|
void *msi_queues;
|
|
unsigned long *msi_bitmap;
|
|
unsigned int *msi_irq_table;
|
|
int (*setup_msi_irq)(unsigned int *irq_p, struct pci_dev *pdev,
|
|
struct msi_desc *entry);
|
|
void (*teardown_msi_irq)(unsigned int irq, struct pci_dev *pdev);
|
|
const struct sparc64_msiq_ops *msi_ops;
|
|
#endif /* !(CONFIG_PCI_MSI) */
|
|
|
|
/* This PBM's streaming buffer. */
|
|
struct strbuf stc;
|
|
|
|
/* IOMMU state, potentially shared by both PBM segments. */
|
|
struct iommu *iommu;
|
|
|
|
/* Now things for the actual PCI bus probes. */
|
|
unsigned int pci_first_busno;
|
|
unsigned int pci_last_busno;
|
|
struct pci_bus *pci_bus;
|
|
struct pci_ops *pci_ops;
|
|
|
|
int numa_node;
|
|
};
|
|
|
|
extern struct pci_pbm_info *pci_pbm_root;
|
|
|
|
extern int pci_num_pbms;
|
|
|
|
/* PCI bus scanning and fixup support. */
|
|
void pci_get_pbm_props(struct pci_pbm_info *pbm);
|
|
struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
|
|
struct device *parent);
|
|
void pci_determine_mem_io_space(struct pci_pbm_info *pbm);
|
|
|
|
/* Error reporting support. */
|
|
void pci_scan_for_target_abort(struct pci_pbm_info *, struct pci_bus *);
|
|
void pci_scan_for_master_abort(struct pci_pbm_info *, struct pci_bus *);
|
|
void pci_scan_for_parity_error(struct pci_pbm_info *, struct pci_bus *);
|
|
|
|
/* Configuration space access. */
|
|
void pci_config_read8(u8 *addr, u8 *ret);
|
|
void pci_config_read16(u16 *addr, u16 *ret);
|
|
void pci_config_read32(u32 *addr, u32 *ret);
|
|
void pci_config_write8(u8 *addr, u8 val);
|
|
void pci_config_write16(u16 *addr, u16 val);
|
|
void pci_config_write32(u32 *addr, u32 val);
|
|
|
|
extern struct pci_ops sun4u_pci_ops;
|
|
extern struct pci_ops sun4v_pci_ops;
|
|
|
|
extern volatile int pci_poke_in_progress;
|
|
extern volatile int pci_poke_cpu;
|
|
extern volatile int pci_poke_faulted;
|
|
|
|
#endif /* !(PCI_IMPL_H) */
|