5 ** Support for NE2000 PCI clones added David Monro June 1997
6 ** Generalised for other PCI NICs by Ken Yap July 1997
8 ** Most of this is taken from:
10 ** /usr/src/linux/drivers/pci/pci.c
11 ** /usr/src/linux/include/linux/pci.h
12 ** /usr/src/linux/arch/i386/bios32.c
13 ** /usr/src/linux/include/linux/bios32.h
14 ** /usr/src/linux/drivers/net/ne.c
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License as
20 * published by the Free Software Foundation; either version 2, or (at
21 * your option) any later version.
28 #define PCI_BUS_TYPE 1
35 #define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
36 #define PCI_COMMAND_MEM 0x2 /* Enable response in mem space */
37 #define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */
38 #define PCI_LATENCY_TIMER 0x0d /* 8 bits */
39 #define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */
40 #define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */
41 #define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */
42 #define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */
43 #define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */
44 #define PCI_COMMAND_SERR 0x100 /* Enable SERR */
45 #define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */
48 #define PCI_VENDOR_ID 0x00 /* 16 bits */
49 #define PCI_DEVICE_ID 0x02 /* 16 bits */
50 #define PCI_COMMAND 0x04 /* 16 bits */
52 #define PCI_STATUS 0x06 /* 16 bits */
53 #define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */
54 #define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */
55 #define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */
56 #define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */
57 #define PCI_STATUS_PARITY 0x100 /* Detected parity error */
58 #define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */
59 #define PCI_STATUS_DEVSEL_FAST 0x000
60 #define PCI_STATUS_DEVSEL_MEDIUM 0x200
61 #define PCI_STATUS_DEVSEL_SLOW 0x400
62 #define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */
63 #define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */
64 #define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */
65 #define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */
66 #define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */
68 #define PCI_REVISION 0x08 /* 8 bits */
69 #define PCI_REVISION_ID 0x08 /* 8 bits */
70 #define PCI_CLASS_REVISION 0x08 /* 32 bits */
71 #define PCI_CLASS_CODE 0x0b /* 8 bits */
72 #define PCI_SUBCLASS_CODE 0x0a /* 8 bits */
73 #define PCI_HEADER_TYPE 0x0e /* 8 bits */
74 #define PCI_HEADER_TYPE_NORMAL 0
75 #define PCI_HEADER_TYPE_BRIDGE 1
76 #define PCI_HEADER_TYPE_CARDBUS 2
79 /* Header type 0 (normal devices) */
80 #define PCI_CARDBUS_CIS 0x28
81 #define PCI_SUBSYSTEM_VENDOR_ID 0x2c
82 #define PCI_SUBSYSTEM_ID 0x2e
84 #define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */
85 #define PCI_BASE_ADDRESS_1 0x14 /* 32 bits */
86 #define PCI_BASE_ADDRESS_2 0x18 /* 32 bits */
87 #define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */
88 #define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */
89 #define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */
91 #define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06
92 #define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */
93 #define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */
94 #define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */
96 #ifndef PCI_BASE_ADDRESS_IO_MASK
97 #define PCI_BASE_ADDRESS_IO_MASK (~0x03)
99 #ifndef PCI_BASE_ADDRESS_MEM_MASK
100 #define PCI_BASE_ADDRESS_MEM_MASK (~0x0f)
102 #define PCI_BASE_ADDRESS_SPACE_IO 0x01
103 #define PCI_ROM_ADDRESS 0x30 /* 32 bits */
104 #define PCI_ROM_ADDRESS_ENABLE 0x01 /* Write 1 to enable ROM,
105 bits 31..11 are address,
106 10..2 are reserved */
108 #define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */
110 #define PCI_INTERRUPT_LINE 0x3c /* IRQ number (0-15) */
111 #define PCI_INTERRUPT_PIN 0x3d /* IRQ pin on PCI bus (A-D) */
113 /* Header type 1 (PCI-to-PCI bridges) */
114 #define PCI_PRIMARY_BUS 0x18 /* Primary bus number */
115 #define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */
116 #define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */
117 #define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */
118 #define PCI_IO_BASE 0x1c /* I/O range behind the bridge */
119 #define PCI_IO_LIMIT 0x1d
120 #define PCI_IO_RANGE_TYPE_MASK 0x0f /* I/O bridging type */
121 #define PCI_IO_RANGE_TYPE_16 0x00
122 #define PCI_IO_RANGE_TYPE_32 0x01
123 #define PCI_IO_RANGE_MASK ~0x0f
124 #define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */
125 #define PCI_MEMORY_BASE 0x20 /* Memory range behind */
126 #define PCI_MEMORY_LIMIT 0x22
127 #define PCI_MEMORY_RANGE_TYPE_MASK 0x0f
128 #define PCI_MEMORY_RANGE_MASK ~0x0f
129 #define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */
130 #define PCI_PREF_MEMORY_LIMIT 0x26
131 #define PCI_PREF_RANGE_TYPE_MASK 0x0f
132 #define PCI_PREF_RANGE_TYPE_32 0x00
133 #define PCI_PREF_RANGE_TYPE_64 0x01
134 #define PCI_PREF_RANGE_MASK ~0x0f
135 #define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */
136 #define PCI_PREF_LIMIT_UPPER32 0x2c
137 #define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */
138 #define PCI_IO_LIMIT_UPPER16 0x32
139 /* 0x34 same as for htype 0 */
140 /* 0x35-0x3b is reserved */
141 #define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */
142 /* 0x3c-0x3d are same as for htype 0 */
143 #define PCI_BRIDGE_CONTROL 0x3e
144 #define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */
145 #define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */
146 #define PCI_BRIDGE_CTL_NO_ISA 0x04 /* Disable bridging of ISA ports */
147 #define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */
148 #define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */
149 #define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */
150 #define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */
152 #define PCI_CB_CAPABILITY_LIST 0x14
154 /* Capability lists */
156 #define PCI_CAP_LIST_ID 0 /* Capability ID */
157 #define PCI_CAP_ID_PM 0x01 /* Power Management */
158 #define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */
159 #define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */
160 #define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */
161 #define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */
162 #define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */
163 #define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */
164 #define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */
165 #define PCI_CAP_SIZEOF 4
167 /* Power Management Registers */
169 #define PCI_PM_PMC 2 /* PM Capabilities Register */
170 #define PCI_PM_CAP_VER_MASK 0x0007 /* Version */
171 #define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */
172 #define PCI_PM_CAP_RESERVED 0x0010 /* Reserved field */
173 #define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */
174 #define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxilliary power support mask */
175 #define PCI_PM_CAP_D1 0x0200 /* D1 power state support */
176 #define PCI_PM_CAP_D2 0x0400 /* D2 power state support */
177 #define PCI_PM_CAP_PME 0x0800 /* PME pin supported */
178 #define PCI_PM_CAP_PME_MASK 0xF800 /* PME Mask of all supported states */
179 #define PCI_PM_CAP_PME_D0 0x0800 /* PME# from D0 */
180 #define PCI_PM_CAP_PME_D1 0x1000 /* PME# from D1 */
181 #define PCI_PM_CAP_PME_D2 0x2000 /* PME# from D2 */
182 #define PCI_PM_CAP_PME_D3 0x4000 /* PME# from D3 (hot) */
183 #define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */
184 #define PCI_PM_CTRL 4 /* PM control and status register */
185 #define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */
186 #define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */
187 #define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */
188 #define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */
189 #define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */
190 #define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */
191 #define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */
192 #define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */
193 #define PCI_PM_DATA_REGISTER 7 /* (??) */
194 #define PCI_PM_SIZEOF 8
198 #define PCI_AGP_VERSION 2 /* BCD version number */
199 #define PCI_AGP_RFU 3 /* Rest of capability flags */
200 #define PCI_AGP_STATUS 4 /* Status register */
201 #define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */
202 #define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */
203 #define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */
204 #define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */
205 #define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */
206 #define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */
207 #define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */
208 #define PCI_AGP_COMMAND 8 /* Control register */
209 #define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */
210 #define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */
211 #define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */
212 #define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */
213 #define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */
214 #define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */
215 #define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 2x rate */
216 #define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 1x rate */
217 #define PCI_AGP_SIZEOF 12
219 /* Slot Identification */
221 #define PCI_SID_ESR 2 /* Expansion Slot Register */
222 #define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */
223 #define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */
224 #define PCI_SID_CHASSIS_NR 3 /* Chassis Number */
226 /* Message Signalled Interrupts registers */
228 #define PCI_MSI_FLAGS 2 /* Various flags */
229 #define PCI_MSI_FLAGS_64BIT 0x80 /* 64-bit addresses allowed */
230 #define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */
231 #define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */
232 #define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */
233 #define PCI_MSI_RFU 3 /* Rest of capability flags */
234 #define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */
235 #define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */
236 #define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */
237 #define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */
239 * A location on a PCI bus
247 * A physical PCI device
252 uint32_t membase; /* BAR 1 */
253 uint32_t ioaddr; /* first IO BAR */
254 uint16_t vendor_id, device_id;
259 } __attribute__ (( packed ));
262 * Useful busdevfn calculations
265 #define PCI_BUS(busdevfn) ( ( uint8_t ) ( ( (busdevfn) >> 8 ) & 0xff ) )
266 #define PCI_DEV(busdevfn) ( ( uint8_t ) ( ( (busdevfn) >> 3 ) & 0x1f ) )
267 #define PCI_FUNC(busdevfn) ( ( uint8_t ) ( (busdevfn) & 0x07 ) )
268 #define PCI_FN0(busdevfn) ( ( uint16_t ) ( (busdevfn) & 0xfff8 ) )
269 #define PCI_MAX_BUSDEVFN 0xffff
272 * An individual PCI device identified by vendor and device IDs
276 unsigned short vendor_id, device_id;
281 * PCI_ROM is used to build up entries in a struct pci_id array. It
282 * is also parsed by parserom.pl to generate Makefile rules and files
285 #define PCI_ROM( _vendor_id, _device_id, _name, _description ) { \
286 .vendor_id = _vendor_id, \
287 .device_id = _device_id, \
292 * A PCI driver information table, with a device ID (struct pci_id)
293 * table and an optional class.
295 * Set the class to something other than PCI_NO_CLASS if the driver
296 * can handle an entire class of devices.
301 unsigned int id_count;
304 #define PCI_NO_CLASS 0
307 * Define a PCI driver.
310 #define PCI_DRIVER( _ids, _class ) { \
312 .id_count = sizeof ( _ids ) / sizeof ( _ids[0] ), \
317 * These are the functions we expect pci_io.c to provide.
320 extern int pci_read_config_byte ( struct pci_device *pci, unsigned int where,
322 extern int pci_write_config_byte ( struct pci_device *pci, unsigned int where,
324 extern int pci_read_config_word ( struct pci_device *pci, unsigned int where,
326 extern int pci_write_config_word ( struct pci_device *pci, unsigned int where,
328 extern int pci_read_config_dword ( struct pci_device *pci, unsigned int where,
330 extern int pci_write_config_dword ( struct pci_device *pci, unsigned int where,
332 extern unsigned long pci_bus_base ( struct pci_device *pci );
335 * pci_io.c is allowed to overwrite pci_max_bus if it knows what the
336 * highest bus in the system will be.
339 extern unsigned int pci_max_bus;
345 extern void adjust_pci_device ( struct pci_device *pci );
346 extern unsigned long pci_bar_start ( struct pci_device *pci,
348 extern unsigned long pci_bar_size ( struct pci_device *pci, unsigned int bar );
349 extern int pci_find_capability ( struct pci_device *pci, int capability );
350 extern void pci_fill_nic ( struct nic *nic, struct pci_device *pci );
353 * PCI bus global definition
356 extern struct bus_driver pci_driver;