pci_impl.h
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- /* $Id: pci_impl.h,v 1.9 2001/06/13 06:34:30 davem Exp $
- * pci_impl.h: Helper definitions for PCI controller support.
- *
- * Copyright (C) 1999 David S. Miller (davem@redhat.com)
- */
- #ifndef PCI_IMPL_H
- #define PCI_IMPL_H
- #include <linux/types.h>
- #include <linux/spinlock.h>
- #include <asm/io.h>
- extern spinlock_t pci_controller_lock;
- extern struct pci_controller_info *pci_controller_root;
- extern struct pci_pbm_info *pci_bus2pbm[256];
- extern unsigned char pci_highest_busnum;
- extern int pci_num_controllers;
- /* PCI bus scanning and fixup support. */
- extern void pci_fixup_host_bridge_self(struct pci_bus *pbus);
- extern void pci_fill_in_pbm_cookies(struct pci_bus *pbus,
- struct pci_pbm_info *pbm,
- int prom_node);
- extern void pci_record_assignments(struct pci_pbm_info *pbm,
- struct pci_bus *pbus);
- extern void pci_assign_unassigned(struct pci_pbm_info *pbm,
- struct pci_bus *pbus);
- extern void pci_fixup_irq(struct pci_pbm_info *pbm,
- struct pci_bus *pbus);
- extern void pci_determine_66mhz_disposition(struct pci_pbm_info *pbm,
- struct pci_bus *pbus);
- extern void pci_setup_busmastering(struct pci_pbm_info *pbm,
- struct pci_bus *pbus);
- extern void pci_register_legacy_regions(struct resource *io_res,
- struct resource *mem_res);
- /* Error reporting support. */
- extern void pci_scan_for_target_abort(struct pci_controller_info *, struct pci_pbm_info *, struct pci_bus *);
- extern void pci_scan_for_master_abort(struct pci_controller_info *, struct pci_pbm_info *, struct pci_bus *);
- extern void pci_scan_for_parity_error(struct pci_controller_info *, struct pci_pbm_info *, struct pci_bus *);
- /* Configuration space access. */
- extern spinlock_t pci_poke_lock;
- extern volatile int pci_poke_in_progress;
- extern volatile int pci_poke_cpu;
- extern volatile int pci_poke_faulted;
- static __inline__ void pci_config_read8(u8 *addr, u8 *ret)
- {
- unsigned long flags;
- u8 byte;
- spin_lock_irqsave(&pci_poke_lock, flags);
- pci_poke_cpu = smp_processor_id();
- pci_poke_in_progress = 1;
- pci_poke_faulted = 0;
- __asm__ __volatile__("membar #Syncnt"
- "lduba [%1] %2, %0nt"
- "membar #Sync"
- : "=r" (byte)
- : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
- : "memory");
- pci_poke_in_progress = 0;
- pci_poke_cpu = -1;
- if (!pci_poke_faulted)
- *ret = byte;
- spin_unlock_irqrestore(&pci_poke_lock, flags);
- }
- static __inline__ void pci_config_read16(u16 *addr, u16 *ret)
- {
- unsigned long flags;
- u16 word;
- spin_lock_irqsave(&pci_poke_lock, flags);
- pci_poke_cpu = smp_processor_id();
- pci_poke_in_progress = 1;
- pci_poke_faulted = 0;
- __asm__ __volatile__("membar #Syncnt"
- "lduha [%1] %2, %0nt"
- "membar #Sync"
- : "=r" (word)
- : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
- : "memory");
- pci_poke_in_progress = 0;
- pci_poke_cpu = -1;
- if (!pci_poke_faulted)
- *ret = word;
- spin_unlock_irqrestore(&pci_poke_lock, flags);
- }
- static __inline__ void pci_config_read32(u32 *addr, u32 *ret)
- {
- unsigned long flags;
- u32 dword;
- spin_lock_irqsave(&pci_poke_lock, flags);
- pci_poke_cpu = smp_processor_id();
- pci_poke_in_progress = 1;
- pci_poke_faulted = 0;
- __asm__ __volatile__("membar #Syncnt"
- "lduwa [%1] %2, %0nt"
- "membar #Sync"
- : "=r" (dword)
- : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
- : "memory");
- pci_poke_in_progress = 0;
- pci_poke_cpu = -1;
- if (!pci_poke_faulted)
- *ret = dword;
- spin_unlock_irqrestore(&pci_poke_lock, flags);
- }
- static __inline__ void pci_config_write8(u8 *addr, u8 val)
- {
- unsigned long flags;
- spin_lock_irqsave(&pci_poke_lock, flags);
- pci_poke_cpu = smp_processor_id();
- pci_poke_in_progress = 1;
- pci_poke_faulted = 0;
- __asm__ __volatile__("membar #Syncnt"
- "stba %0, [%1] %2nt"
- "membar #Sync"
- : /* no outputs */
- : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
- : "memory");
- pci_poke_in_progress = 0;
- pci_poke_cpu = -1;
- spin_unlock_irqrestore(&pci_poke_lock, flags);
- }
- static __inline__ void pci_config_write16(u16 *addr, u16 val)
- {
- unsigned long flags;
- spin_lock_irqsave(&pci_poke_lock, flags);
- pci_poke_cpu = smp_processor_id();
- pci_poke_in_progress = 1;
- pci_poke_faulted = 0;
- __asm__ __volatile__("membar #Syncnt"
- "stha %0, [%1] %2nt"
- "membar #Sync"
- : /* no outputs */
- : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
- : "memory");
- pci_poke_in_progress = 0;
- pci_poke_cpu = -1;
- spin_unlock_irqrestore(&pci_poke_lock, flags);
- }
- static __inline__ void pci_config_write32(u32 *addr, u32 val)
- {
- unsigned long flags;
- spin_lock_irqsave(&pci_poke_lock, flags);
- pci_poke_cpu = smp_processor_id();
- pci_poke_in_progress = 1;
- pci_poke_faulted = 0;
- __asm__ __volatile__("membar #Syncnt"
- "stwa %0, [%1] %2nt"
- "membar #Sync"
- : /* no outputs */
- : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
- : "memory");
- pci_poke_in_progress = 0;
- pci_poke_cpu = -1;
- spin_unlock_irqrestore(&pci_poke_lock, flags);
- }
- #endif /* !(PCI_IMPL_H) */