Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * c 2001 PPC 64 Team, IBM Corp |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | */ |
Stephen Rothwell | d387899 | 2005-09-28 02:50:25 +1000 | [diff] [blame] | 9 | #ifndef _ASM_POWERPC_PPC_PCI_H |
| 10 | #define _ASM_POWERPC_PPC_PCI_H |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 11 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | |
Stephen Rothwell | bed5927 | 2007-03-04 17:04:44 +1100 | [diff] [blame] | 13 | #ifdef CONFIG_PCI |
| 14 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <linux/pci.h> |
| 16 | #include <asm/pci-bridge.h> |
| 17 | |
| 18 | extern unsigned long isa_io_base; |
| 19 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | extern void pci_setup_phb_io(struct pci_controller *hose, int primary); |
| 21 | extern void pci_setup_phb_io_dynamic(struct pci_controller *hose, int primary); |
| 22 | |
| 23 | |
| 24 | extern struct list_head hose_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
Stephen Rothwell | 36241ce | 2007-03-04 17:07:38 +1100 | [diff] [blame] | 26 | extern void find_and_init_phbs(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | |
Benjamin Herrenschmidt | 3d5134e | 2007-06-04 15:15:36 +1000 | [diff] [blame] | 28 | extern struct pci_dev *isa_bridge_pcidev; /* may be NULL if no ISA bus */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
linas | ae65a39 | 2005-11-03 18:42:26 -0600 | [diff] [blame] | 30 | /** Bus Unit ID macros; get low and hi 32-bits of the 64-bit BUID */ |
| 31 | #define BUID_HI(buid) ((buid) >> 32) |
| 32 | #define BUID_LO(buid) ((buid) & 0xffffffff) |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | /* PCI device_node operations */ |
| 35 | struct device_node; |
| 36 | typedef void *(*traverse_func)(struct device_node *me, void *data); |
| 37 | void *traverse_pci_devices(struct device_node *start, traverse_func pre, |
| 38 | void *data); |
| 39 | |
Benjamin Herrenschmidt | 4c9d280 | 2006-11-11 17:25:08 +1100 | [diff] [blame] | 40 | extern void pci_devs_phb_init(void); |
| 41 | extern void pci_devs_phb_init_dynamic(struct pci_controller *phb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
John Rose | dad32bb | 2005-06-23 17:09:54 +1000 | [diff] [blame] | 43 | /* From rtas_pci.h */ |
Benjamin Herrenschmidt | 4c9d280 | 2006-11-11 17:25:08 +1100 | [diff] [blame] | 44 | extern void init_pci_config_tokens (void); |
| 45 | extern unsigned long get_phb_buid (struct device_node *); |
| 46 | extern int rtas_setup_phb(struct pci_controller *phb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | extern unsigned long pci_probe_only; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Linas Vepstas | 6dee3fb | 2005-11-03 18:50:10 -0600 | [diff] [blame] | 50 | /* ---- EEH internal-use-only related routines ---- */ |
| 51 | #ifdef CONFIG_EEH |
Linas Vepstas | 5d5a093 | 2005-11-03 18:53:07 -0600 | [diff] [blame] | 52 | |
| 53 | void pci_addr_cache_insert_device(struct pci_dev *dev); |
| 54 | void pci_addr_cache_remove_device(struct pci_dev *dev); |
| 55 | void pci_addr_cache_build(void); |
| 56 | struct pci_dev *pci_get_device_by_addr(unsigned long addr); |
| 57 | |
Linas Vepstas | 6dee3fb | 2005-11-03 18:50:10 -0600 | [diff] [blame] | 58 | /** |
Linas Vepstas | 77bd741 | 2005-11-03 18:52:49 -0600 | [diff] [blame] | 59 | * eeh_slot_error_detail -- record and EEH error condition to the log |
Linas Vepstas | 17213c3 | 2007-05-10 02:38:11 +1000 | [diff] [blame] | 60 | * @pdn: pci device node |
| 61 | * @severity: EEH_LOG_TEMP_FAILURE or EEH_LOG_PERM_FAILURE |
Linas Vepstas | 77bd741 | 2005-11-03 18:52:49 -0600 | [diff] [blame] | 62 | * |
Michael Opdenacker | 59c5159 | 2007-05-09 08:57:56 +0200 | [diff] [blame] | 63 | * Obtains the EEH error details from the RTAS subsystem, |
Linas Vepstas | 77bd741 | 2005-11-03 18:52:49 -0600 | [diff] [blame] | 64 | * and then logs these details with the RTAS error log system. |
| 65 | */ |
Linas Vepstas | 17213c3 | 2007-05-10 02:38:11 +1000 | [diff] [blame] | 66 | #define EEH_LOG_TEMP_FAILURE 1 |
| 67 | #define EEH_LOG_PERM_FAILURE 2 |
Linas Vepstas | 77bd741 | 2005-11-03 18:52:49 -0600 | [diff] [blame] | 68 | void eeh_slot_error_detail (struct pci_dn *pdn, int severity); |
| 69 | |
| 70 | /** |
Linas Vepstas | 9c54776 | 2007-03-19 14:58:07 -0500 | [diff] [blame] | 71 | * rtas_pci_enable - enable IO transfers for this slot |
Linas Vepstas | 47b5c83 | 2006-09-15 18:57:42 -0500 | [diff] [blame] | 72 | * @pdn: pci device node |
| 73 | * @function: either EEH_THAW_MMIO or EEH_THAW_DMA |
| 74 | * |
| 75 | * Enable I/O transfers to this slot |
| 76 | */ |
| 77 | #define EEH_THAW_MMIO 2 |
| 78 | #define EEH_THAW_DMA 3 |
| 79 | int rtas_pci_enable(struct pci_dn *pdn, int function); |
| 80 | |
| 81 | /** |
Linas Vepstas | 6dee3fb | 2005-11-03 18:50:10 -0600 | [diff] [blame] | 82 | * rtas_set_slot_reset -- unfreeze a frozen slot |
Linas Vepstas | 17213c3 | 2007-05-10 02:38:11 +1000 | [diff] [blame] | 83 | * @pdn: pci device node |
Linas Vepstas | 6dee3fb | 2005-11-03 18:50:10 -0600 | [diff] [blame] | 84 | * |
| 85 | * Clear the EEH-frozen condition on a slot. This routine |
| 86 | * does this by asserting the PCI #RST line for 1/8th of |
| 87 | * a second; this routine will sleep while the adapter is |
| 88 | * being reset. |
Linas Vepstas | b6495c0 | 2005-11-03 18:54:54 -0600 | [diff] [blame] | 89 | * |
| 90 | * Returns a non-zero value if the reset failed. |
Linas Vepstas | 6dee3fb | 2005-11-03 18:50:10 -0600 | [diff] [blame] | 91 | */ |
Linas Vepstas | b6495c0 | 2005-11-03 18:54:54 -0600 | [diff] [blame] | 92 | int rtas_set_slot_reset (struct pci_dn *); |
Linas Vepstas | 9c54776 | 2007-03-19 14:58:07 -0500 | [diff] [blame] | 93 | int eeh_wait_for_slot_status(struct pci_dn *pdn, int max_wait_msecs); |
Linas Vepstas | 6dee3fb | 2005-11-03 18:50:10 -0600 | [diff] [blame] | 94 | |
Linas Vepstas | 8b553f3 | 2005-11-03 18:50:17 -0600 | [diff] [blame] | 95 | /** |
| 96 | * eeh_restore_bars - Restore device configuration info. |
Linas Vepstas | 17213c3 | 2007-05-10 02:38:11 +1000 | [diff] [blame] | 97 | * @pdn: pci device node |
Linas Vepstas | 8b553f3 | 2005-11-03 18:50:17 -0600 | [diff] [blame] | 98 | * |
| 99 | * A reset of a PCI device will clear out its config space. |
| 100 | * This routines will restore the config space for this |
| 101 | * device, and is children, to values previously obtained |
| 102 | * from the firmware. |
| 103 | */ |
| 104 | void eeh_restore_bars(struct pci_dn *); |
| 105 | |
| 106 | /** |
| 107 | * rtas_configure_bridge -- firmware initialization of pci bridge |
Linas Vepstas | 17213c3 | 2007-05-10 02:38:11 +1000 | [diff] [blame] | 108 | * @pdn: pci device node |
Linas Vepstas | 8b553f3 | 2005-11-03 18:50:17 -0600 | [diff] [blame] | 109 | * |
| 110 | * Ask the firmware to configure all PCI bridges devices |
| 111 | * located behind the indicated node. Required after a |
| 112 | * pci device reset. Does essentially the same hing as |
| 113 | * eeh_restore_bars, but for brdges, and lets firmware |
| 114 | * do the work. |
| 115 | */ |
| 116 | void rtas_configure_bridge(struct pci_dn *); |
| 117 | |
| 118 | int rtas_write_config(struct pci_dn *, int where, int size, u32 val); |
Linas Vepstas | 7684b40 | 2005-11-03 18:55:19 -0600 | [diff] [blame] | 119 | int rtas_read_config(struct pci_dn *, int where, int size, u32 *val); |
Linas Vepstas | 8b553f3 | 2005-11-03 18:50:17 -0600 | [diff] [blame] | 120 | |
Linas Vepstas | d9564ad | 2005-11-03 18:50:48 -0600 | [diff] [blame] | 121 | /** |
Linas Vepstas | 17213c3 | 2007-05-10 02:38:11 +1000 | [diff] [blame] | 122 | * eeh_mark_slot -- set mode flags for pertition endpoint |
| 123 | * @pdn: pci device node |
| 124 | * |
Linas Vepstas | d9564ad | 2005-11-03 18:50:48 -0600 | [diff] [blame] | 125 | * mark and clear slots: find "partition endpoint" PE and set or |
| 126 | * clear the flags for each subnode of the PE. |
| 127 | */ |
| 128 | void eeh_mark_slot (struct device_node *dn, int mode_flag); |
| 129 | void eeh_clear_slot (struct device_node *dn, int mode_flag); |
| 130 | |
Linas Vepstas | 17213c3 | 2007-05-10 02:38:11 +1000 | [diff] [blame] | 131 | /** |
| 132 | * find_device_pe -- Find the associated "Partiationable Endpoint" PE |
| 133 | * @pdn: pci device node |
| 134 | */ |
Linas Vepstas | 9fb40eb | 2005-11-03 18:54:29 -0600 | [diff] [blame] | 135 | struct device_node * find_device_pe(struct device_node *dn); |
| 136 | |
Linas Vepstas | e1d04c9 | 2007-05-24 03:16:46 +1000 | [diff] [blame] | 137 | void eeh_sysfs_add_device(struct pci_dev *pdev); |
| 138 | void eeh_sysfs_remove_device(struct pci_dev *pdev); |
| 139 | |
Breno Leitao | 8d3d50b | 2010-02-03 05:56:41 +0000 | [diff] [blame] | 140 | static inline const char *eeh_pci_name(struct pci_dev *pdev) |
| 141 | { |
| 142 | return pdev ? pci_name(pdev) : "<null>"; |
| 143 | } |
| 144 | |
Linas Vepstas | 17213c3 | 2007-05-10 02:38:11 +1000 | [diff] [blame] | 145 | #endif /* CONFIG_EEH */ |
Linas Vepstas | 6dee3fb | 2005-11-03 18:50:10 -0600 | [diff] [blame] | 146 | |
Stephen Rothwell | bed5927 | 2007-03-04 17:04:44 +1100 | [diff] [blame] | 147 | #else /* CONFIG_PCI */ |
| 148 | static inline void find_and_init_phbs(void) { } |
| 149 | static inline void init_pci_config_tokens(void) { } |
| 150 | #endif /* !CONFIG_PCI */ |
| 151 | |
Arnd Bergmann | 88ced03 | 2005-12-16 22:43:46 +0100 | [diff] [blame] | 152 | #endif /* __KERNEL__ */ |
Stephen Rothwell | d387899 | 2005-09-28 02:50:25 +1000 | [diff] [blame] | 153 | #endif /* _ASM_POWERPC_PPC_PCI_H */ |