3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 /* PCI.c - PCI functions */
32 void pciauto_config_init(struct pci_controller
*hose
);
33 int pciauto_region_allocate(struct pci_region
* res
, unsigned int size
, unsigned int *bar
);
36 #include "../../Marvell/include/pci.h"
39 #undef IDE_SET_NATIVE_MODE
40 static unsigned int local_buses
[] = { 0, 0 };
42 static const unsigned char pci_irq_swizzle
[2][PCI_MAX_DEVICES
] = {
43 {0, 0, 0, 0, 0, 0, 0, 27, 27, [9 ... PCI_MAX_DEVICES
- 1] = 0 },
44 {0, 0, 0, 0, 0, 0, 0, 29, 29, [9 ... PCI_MAX_DEVICES
- 1] = 0 },
47 #ifdef CONFIG_USE_CPCIDVI
53 static GT_CPCIDVI_ROM_T gt_cpcidvi_rom
= {0, 0};
57 static const unsigned int pci_bus_list
[] = { PCI_0_MODE
, PCI_1_MODE
};
58 static void gt_pci_bus_mode_display (PCI_HOST host
)
63 mode
= (GTREGREAD (pci_bus_list
[host
]) & (BIT4
| BIT5
)) >> 4;
66 printf ("PCI %d bus mode: Conventional PCI\n", host
);
69 printf ("PCI %d bus mode: 66 Mhz PCIX\n", host
);
72 printf ("PCI %d bus mode: 100 Mhz PCIX\n", host
);
75 printf ("PCI %d bus mode: 133 Mhz PCIX\n", host
);
78 printf ("Unknown BUS %d\n", mode
);
83 static const unsigned int pci_p2p_configuration_reg
[] = {
84 PCI_0P2P_CONFIGURATION
, PCI_1P2P_CONFIGURATION
87 static const unsigned int pci_configuration_address
[] = {
88 PCI_0CONFIGURATION_ADDRESS
, PCI_1CONFIGURATION_ADDRESS
91 static const unsigned int pci_configuration_data
[] = {
92 PCI_0CONFIGURATION_DATA_VIRTUAL_REGISTER
,
93 PCI_1CONFIGURATION_DATA_VIRTUAL_REGISTER
96 static const unsigned int pci_error_cause_reg
[] = {
97 PCI_0ERROR_CAUSE
, PCI_1ERROR_CAUSE
100 static const unsigned int pci_arbiter_control
[] = {
101 PCI_0ARBITER_CONTROL
, PCI_1ARBITER_CONTROL
104 static const unsigned int pci_address_space_en
[] = {
105 PCI_0_BASE_ADDR_REG_ENABLE
, PCI_1_BASE_ADDR_REG_ENABLE
108 static const unsigned int pci_snoop_control_base_0_low
[] = {
109 PCI_0SNOOP_CONTROL_BASE_0_LOW
, PCI_1SNOOP_CONTROL_BASE_0_LOW
111 static const unsigned int pci_snoop_control_top_0
[] = {
112 PCI_0SNOOP_CONTROL_TOP_0
, PCI_1SNOOP_CONTROL_TOP_0
115 static const unsigned int pci_access_control_base_0_low
[] = {
116 PCI_0ACCESS_CONTROL_BASE_0_LOW
, PCI_1ACCESS_CONTROL_BASE_0_LOW
118 static const unsigned int pci_access_control_top_0
[] = {
119 PCI_0ACCESS_CONTROL_TOP_0
, PCI_1ACCESS_CONTROL_TOP_0
122 static const unsigned int pci_scs_bank_size
[2][4] = {
123 {PCI_0SCS_0_BANK_SIZE
, PCI_0SCS_1_BANK_SIZE
,
124 PCI_0SCS_2_BANK_SIZE
, PCI_0SCS_3_BANK_SIZE
},
125 {PCI_1SCS_0_BANK_SIZE
, PCI_1SCS_1_BANK_SIZE
,
126 PCI_1SCS_2_BANK_SIZE
, PCI_1SCS_3_BANK_SIZE
}
129 static const unsigned int pci_p2p_configuration
[] = {
130 PCI_0P2P_CONFIGURATION
, PCI_1P2P_CONFIGURATION
134 /********************************************************************
135 * pciWriteConfigReg - Write to a PCI configuration register
136 * - Make sure the GT is configured as a master before writing
137 * to another device on the PCI.
138 * - The function takes care of Big/Little endian conversion.
141 * Inputs: unsigned int regOffset: The register offset as it apears in the GT spec
142 * (or any other PCI device spec)
143 * pciDevNum: The device number needs to be addressed.
145 * Configuration Address 0xCF8:
147 * 31 30 24 23 16 15 11 10 8 7 2 0 <=bit Number
148 * |congif|Reserved| Bus |Device|Function|Register|00|
149 * |Enable| |Number|Number| Number | Number | | <=field Name
151 *********************************************************************/
152 void pciWriteConfigReg (PCI_HOST host
, unsigned int regOffset
,
153 unsigned int pciDevNum
, unsigned int data
)
155 volatile unsigned int DataForAddrReg
;
156 unsigned int functionNum
;
157 unsigned int busNum
= 0;
160 if (pciDevNum
> 32) /* illegal device Number */
162 if (pciDevNum
== SELF
) { /* configure our configuration space. */
164 (GTREGREAD (pci_p2p_configuration_reg
[host
]) >> 24) &
166 busNum
= GTREGREAD (pci_p2p_configuration_reg
[host
]) &
169 functionNum
= regOffset
& 0x00000700;
170 pciDevNum
= pciDevNum
<< 11;
171 regOffset
= regOffset
& 0xfc;
173 (regOffset
| pciDevNum
| functionNum
| busNum
) | BIT31
;
174 GT_REG_WRITE (pci_configuration_address
[host
], DataForAddrReg
);
175 GT_REG_READ (pci_configuration_address
[host
], &addr
);
176 if (addr
!= DataForAddrReg
)
178 GT_REG_WRITE (pci_configuration_data
[host
], data
);
181 /********************************************************************
182 * pciReadConfigReg - Read from a PCI0 configuration register
183 * - Make sure the GT is configured as a master before reading
184 * from another device on the PCI.
185 * - The function takes care of Big/Little endian conversion.
186 * INPUTS: regOffset: The register offset as it apears in the GT spec (or PCI
188 * pciDevNum: The device number needs to be addressed.
189 * RETURNS: data , if the data == 0xffffffff check the master abort bit in the
190 * cause register to make sure the data is valid
192 * Configuration Address 0xCF8:
194 * 31 30 24 23 16 15 11 10 8 7 2 0 <=bit Number
195 * |congif|Reserved| Bus |Device|Function|Register|00|
196 * |Enable| |Number|Number| Number | Number | | <=field Name
198 *********************************************************************/
199 unsigned int pciReadConfigReg (PCI_HOST host
, unsigned int regOffset
,
200 unsigned int pciDevNum
)
202 volatile unsigned int DataForAddrReg
;
204 unsigned int functionNum
;
205 unsigned int busNum
= 0;
207 if (pciDevNum
> 32) /* illegal device Number */
209 if (pciDevNum
== SELF
) { /* configure our configuration space. */
211 (GTREGREAD (pci_p2p_configuration_reg
[host
]) >> 24) &
213 busNum
= GTREGREAD (pci_p2p_configuration_reg
[host
]) &
216 functionNum
= regOffset
& 0x00000700;
217 pciDevNum
= pciDevNum
<< 11;
218 regOffset
= regOffset
& 0xfc;
220 (regOffset
| pciDevNum
| functionNum
| busNum
) | BIT31
;
221 GT_REG_WRITE (pci_configuration_address
[host
], DataForAddrReg
);
222 GT_REG_READ (pci_configuration_address
[host
], &data
);
223 if (data
!= DataForAddrReg
)
225 GT_REG_READ (pci_configuration_data
[host
], &data
);
229 /********************************************************************
230 * pciOverBridgeWriteConfigReg - Write to a PCI configuration register where
231 * the agent is placed on another Bus. For more
232 * information read P2P in the PCI spec.
234 * Inputs: unsigned int regOffset - The register offset as it apears in the
235 * GT spec (or any other PCI device spec).
236 * unsigned int pciDevNum - The device number needs to be addressed.
237 * unsigned int busNum - On which bus does the Target agent connect
239 * unsigned int data - data to be written.
241 * Configuration Address 0xCF8:
243 * 31 30 24 23 16 15 11 10 8 7 2 0 <=bit Number
244 * |congif|Reserved| Bus |Device|Function|Register|01|
245 * |Enable| |Number|Number| Number | Number | | <=field Name
247 * The configuration Address is configure as type-I (bits[1:0] = '01') due to
248 * PCI spec referring to P2P.
250 *********************************************************************/
251 void pciOverBridgeWriteConfigReg (PCI_HOST host
,
252 unsigned int regOffset
,
253 unsigned int pciDevNum
,
254 unsigned int busNum
, unsigned int data
)
256 unsigned int DataForReg
;
257 unsigned int functionNum
;
259 functionNum
= regOffset
& 0x00000700;
260 pciDevNum
= pciDevNum
<< 11;
261 regOffset
= regOffset
& 0xff;
262 busNum
= busNum
<< 16;
263 if (pciDevNum
== SELF
) { /* This board */
264 DataForReg
= (regOffset
| pciDevNum
| functionNum
) | BIT0
;
266 DataForReg
= (regOffset
| pciDevNum
| functionNum
| busNum
) |
269 GT_REG_WRITE (pci_configuration_address
[host
], DataForReg
);
270 GT_REG_WRITE (pci_configuration_data
[host
], data
);
274 /********************************************************************
275 * pciOverBridgeReadConfigReg - Read from a PCIn configuration register where
276 * the agent target locate on another PCI bus.
277 * - Make sure the GT is configured as a master
278 * before reading from another device on the PCI.
279 * - The function takes care of Big/Little endian
281 * INPUTS: regOffset: The register offset as it apears in the GT spec (or PCI
282 * spec). (configuration register offset.)
283 * pciDevNum: The device number needs to be addressed.
284 * busNum: the Bus number where the agent is place.
285 * RETURNS: data , if the data == 0xffffffff check the master abort bit in the
286 * cause register to make sure the data is valid
288 * Configuration Address 0xCF8:
290 * 31 30 24 23 16 15 11 10 8 7 2 0 <=bit Number
291 * |congif|Reserved| Bus |Device|Function|Register|01|
292 * |Enable| |Number|Number| Number | Number | | <=field Name
294 *********************************************************************/
295 unsigned int pciOverBridgeReadConfigReg (PCI_HOST host
,
296 unsigned int regOffset
,
297 unsigned int pciDevNum
,
300 unsigned int DataForReg
;
302 unsigned int functionNum
;
304 functionNum
= regOffset
& 0x00000700;
305 pciDevNum
= pciDevNum
<< 11;
306 regOffset
= regOffset
& 0xff;
307 busNum
= busNum
<< 16;
308 if (pciDevNum
== SELF
) { /* This board */
309 DataForReg
= (regOffset
| pciDevNum
| functionNum
) | BIT31
;
310 } else { /* agent on another bus */
312 DataForReg
= (regOffset
| pciDevNum
| functionNum
| busNum
) |
315 GT_REG_WRITE (pci_configuration_address
[host
], DataForReg
);
316 GT_REG_READ (pci_configuration_data
[host
], &data
);
321 /********************************************************************
322 * pciGetRegOffset - Gets the register offset for this region config.
324 * INPUT: Bus, Region - The bus and region we ask for its base address.
326 * RETURNS: PCI register base address
327 *********************************************************************/
328 static unsigned int pciGetRegOffset (PCI_HOST host
, PCI_REGION region
)
334 return PCI_0I_O_LOW_DECODE_ADDRESS
;
336 return PCI_0MEMORY0_LOW_DECODE_ADDRESS
;
338 return PCI_0MEMORY1_LOW_DECODE_ADDRESS
;
340 return PCI_0MEMORY2_LOW_DECODE_ADDRESS
;
342 return PCI_0MEMORY3_LOW_DECODE_ADDRESS
;
347 return PCI_1I_O_LOW_DECODE_ADDRESS
;
349 return PCI_1MEMORY0_LOW_DECODE_ADDRESS
;
351 return PCI_1MEMORY1_LOW_DECODE_ADDRESS
;
353 return PCI_1MEMORY2_LOW_DECODE_ADDRESS
;
355 return PCI_1MEMORY3_LOW_DECODE_ADDRESS
;
358 return PCI_0MEMORY0_LOW_DECODE_ADDRESS
;
361 static unsigned int pciGetRemapOffset (PCI_HOST host
, PCI_REGION region
)
367 return PCI_0I_O_ADDRESS_REMAP
;
369 return PCI_0MEMORY0_ADDRESS_REMAP
;
371 return PCI_0MEMORY1_ADDRESS_REMAP
;
373 return PCI_0MEMORY2_ADDRESS_REMAP
;
375 return PCI_0MEMORY3_ADDRESS_REMAP
;
380 return PCI_1I_O_ADDRESS_REMAP
;
382 return PCI_1MEMORY0_ADDRESS_REMAP
;
384 return PCI_1MEMORY1_ADDRESS_REMAP
;
386 return PCI_1MEMORY2_ADDRESS_REMAP
;
388 return PCI_1MEMORY3_ADDRESS_REMAP
;
391 return PCI_0MEMORY0_ADDRESS_REMAP
;
394 /********************************************************************
395 * pciGetBaseAddress - Gets the base address of a PCI.
396 * - If the PCI size is 0 then this base address has no meaning!!!
399 * INPUT: Bus, Region - The bus and region we ask for its base address.
401 * RETURNS: PCI base address.
402 *********************************************************************/
403 unsigned int pciGetBaseAddress (PCI_HOST host
, PCI_REGION region
)
405 unsigned int regBase
;
407 unsigned int regOffset
= pciGetRegOffset (host
, region
);
409 GT_REG_READ (regOffset
, ®Base
);
410 GT_REG_READ (regOffset
+ 8, ®End
);
412 if (regEnd
<= regBase
)
413 return 0xffffffff; /* ERROR !!! */
415 regBase
= regBase
<< 16;
419 bool pciMapSpace (PCI_HOST host
, PCI_REGION region
, unsigned int remapBase
,
420 unsigned int bankBase
, unsigned int bankLength
)
422 unsigned int low
= 0xfff;
423 unsigned int high
= 0x0;
424 unsigned int regOffset
= pciGetRegOffset (host
, region
);
425 unsigned int remapOffset
= pciGetRemapOffset (host
, region
);
427 if (bankLength
!= 0) {
428 low
= (bankBase
>> 16) & 0xffff;
429 high
= ((bankBase
+ bankLength
) >> 16) - 1;
432 GT_REG_WRITE (regOffset
, low
| (1 << 24)); /* no swapping */
433 GT_REG_WRITE (regOffset
+ 8, high
);
435 if (bankLength
!= 0) { /* must do AFTER writing maps */
436 GT_REG_WRITE (remapOffset
, remapBase
>> 16); /* sorry, 32 bits only.
437 dont support upper 32
443 unsigned int pciGetSpaceBase (PCI_HOST host
, PCI_REGION region
)
446 unsigned int regOffset
= pciGetRegOffset (host
, region
);
448 GT_REG_READ (regOffset
, &low
);
449 return (low
& 0xffff) << 16;
452 unsigned int pciGetSpaceSize (PCI_HOST host
, PCI_REGION region
)
454 unsigned int low
, high
;
455 unsigned int regOffset
= pciGetRegOffset (host
, region
);
457 GT_REG_READ (regOffset
, &low
);
458 GT_REG_READ (regOffset
+ 8, &high
);
459 return ((high
& 0xffff) + 1) << 16;
463 /* ronen - 7/Dec/03*/
464 /********************************************************************
465 * gtPciDisable/EnableInternalBAR - This function enable/disable PCI BARS.
466 * Inputs: one of the PCI BAR
467 *********************************************************************/
468 void gtPciEnableInternalBAR (PCI_HOST host
, PCI_INTERNAL_BAR pciBAR
)
470 RESET_REG_BITS (pci_address_space_en
[host
], BIT0
<< pciBAR
);
473 void gtPciDisableInternalBAR (PCI_HOST host
, PCI_INTERNAL_BAR pciBAR
)
475 SET_REG_BITS (pci_address_space_en
[host
], BIT0
<< pciBAR
);
478 /********************************************************************
479 * pciMapMemoryBank - Maps PCI_host memory bank "bank" for the slave.
481 * Inputs: base and size of PCI SCS
482 *********************************************************************/
483 void pciMapMemoryBank (PCI_HOST host
, MEMORY_BANK bank
,
484 unsigned int pciDramBase
, unsigned int pciDramSize
)
486 /*ronen different function for 3rd bank. */
487 unsigned int offset
= (bank
< 2) ? bank
* 8 : 0x100 + (bank
- 2) * 8;
489 pciDramBase
= pciDramBase
& 0xfffff000;
490 pciDramBase
= pciDramBase
| (pciReadConfigReg (host
,
491 PCI_SCS_0_BASE_ADDRESS
494 pciWriteConfigReg (host
, PCI_SCS_0_BASE_ADDRESS
+ offset
, SELF
,
496 if (pciDramSize
== 0)
498 GT_REG_WRITE (pci_scs_bank_size
[host
][bank
], pciDramSize
- 1);
499 gtPciEnableInternalBAR (host
, bank
);
502 /********************************************************************
503 * pciSetRegionFeatures - This function modifys one of the 8 regions with
504 * feature bits given as an input.
505 * - Be advised to check the spec before modifying them.
506 * Inputs: PCI_PROTECT_REGION region - one of the eight regions.
507 * unsigned int features - See file: pci.h there are defintion for those
509 * unsigned int baseAddress - The region base Address.
510 * unsigned int topAddress - The region top Address.
511 * Returns: false if one of the parameters is erroneous true otherwise.
512 *********************************************************************/
513 bool pciSetRegionFeatures (PCI_HOST host
, PCI_ACCESS_REGIONS region
,
514 unsigned int features
, unsigned int baseAddress
,
515 unsigned int regionLength
)
517 unsigned int accessLow
;
518 unsigned int accessHigh
;
519 unsigned int accessTop
= baseAddress
+ regionLength
;
521 if (regionLength
== 0) { /* close the region. */
522 pciDisableAccessRegion (host
, region
);
525 /* base Address is store is bits [11:0] */
526 accessLow
= (baseAddress
& 0xfff00000) >> 20;
527 /* All the features are update according to the defines in pci.h (to be on
528 the safe side we disable bits: [11:0] */
529 accessLow
= accessLow
| (features
& 0xfffff000);
530 /* write to the Low Access Region register */
531 GT_REG_WRITE (pci_access_control_base_0_low
[host
] + 0x10 * region
,
534 accessHigh
= (accessTop
& 0xfff00000) >> 20;
536 /* write to the High Access Region register */
537 GT_REG_WRITE (pci_access_control_top_0
[host
] + 0x10 * region
,
542 /********************************************************************
543 * pciDisableAccessRegion - Disable The given Region by writing MAX size
544 * to its low Address and MIN size to its high Address.
546 * Inputs: PCI_ACCESS_REGIONS region - The region we to be Disabled.
548 *********************************************************************/
549 void pciDisableAccessRegion (PCI_HOST host
, PCI_ACCESS_REGIONS region
)
551 /* writing back the registers default values. */
552 GT_REG_WRITE (pci_access_control_base_0_low
[host
] + 0x10 * region
,
554 GT_REG_WRITE (pci_access_control_top_0
[host
] + 0x10 * region
, 0);
557 /********************************************************************
558 * pciArbiterEnable - Enables PCI-0`s Arbitration mechanism.
562 *********************************************************************/
563 bool pciArbiterEnable (PCI_HOST host
)
565 unsigned int regData
;
567 GT_REG_READ (pci_arbiter_control
[host
], ®Data
);
568 GT_REG_WRITE (pci_arbiter_control
[host
], regData
| BIT31
);
572 /********************************************************************
573 * pciArbiterDisable - Disable PCI-0`s Arbitration mechanism.
577 *********************************************************************/
578 bool pciArbiterDisable (PCI_HOST host
)
580 unsigned int regData
;
582 GT_REG_READ (pci_arbiter_control
[host
], ®Data
);
583 GT_REG_WRITE (pci_arbiter_control
[host
], regData
& 0x7fffffff);
587 /********************************************************************
588 * pciSetArbiterAgentsPriority - Priority setup for the PCI agents (Hi or Low)
590 * Inputs: PCI_AGENT_PRIO internalAgent - priotity for internal agent.
591 * PCI_AGENT_PRIO externalAgent0 - priotity for external#0 agent.
592 * PCI_AGENT_PRIO externalAgent1 - priotity for external#1 agent.
593 * PCI_AGENT_PRIO externalAgent2 - priotity for external#2 agent.
594 * PCI_AGENT_PRIO externalAgent3 - priotity for external#3 agent.
595 * PCI_AGENT_PRIO externalAgent4 - priotity for external#4 agent.
596 * PCI_AGENT_PRIO externalAgent5 - priotity for external#5 agent.
598 *********************************************************************/
599 bool pciSetArbiterAgentsPriority (PCI_HOST host
, PCI_AGENT_PRIO internalAgent
,
600 PCI_AGENT_PRIO externalAgent0
,
601 PCI_AGENT_PRIO externalAgent1
,
602 PCI_AGENT_PRIO externalAgent2
,
603 PCI_AGENT_PRIO externalAgent3
,
604 PCI_AGENT_PRIO externalAgent4
,
605 PCI_AGENT_PRIO externalAgent5
)
607 unsigned int regData
;
608 unsigned int writeData
;
610 GT_REG_READ (pci_arbiter_control
[host
], ®Data
);
611 writeData
= (internalAgent
<< 7) + (externalAgent0
<< 8) +
612 (externalAgent1
<< 9) + (externalAgent2
<< 10) +
613 (externalAgent3
<< 11) + (externalAgent4
<< 12) +
614 (externalAgent5
<< 13);
615 regData
= (regData
& 0xffffc07f) | writeData
;
616 GT_REG_WRITE (pci_arbiter_control
[host
], regData
& regData
);
620 /********************************************************************
621 * pciParkingDisable - Park on last option disable, with this function you can
622 * disable the park on last mechanism for each agent.
623 * disabling this option for all agents results parking
624 * on the internal master.
626 * Inputs: PCI_AGENT_PARK internalAgent - parking Disable for internal agent.
627 * PCI_AGENT_PARK externalAgent0 - parking Disable for external#0 agent.
628 * PCI_AGENT_PARK externalAgent1 - parking Disable for external#1 agent.
629 * PCI_AGENT_PARK externalAgent2 - parking Disable for external#2 agent.
630 * PCI_AGENT_PARK externalAgent3 - parking Disable for external#3 agent.
631 * PCI_AGENT_PARK externalAgent4 - parking Disable for external#4 agent.
632 * PCI_AGENT_PARK externalAgent5 - parking Disable for external#5 agent.
634 *********************************************************************/
635 bool pciParkingDisable (PCI_HOST host
, PCI_AGENT_PARK internalAgent
,
636 PCI_AGENT_PARK externalAgent0
,
637 PCI_AGENT_PARK externalAgent1
,
638 PCI_AGENT_PARK externalAgent2
,
639 PCI_AGENT_PARK externalAgent3
,
640 PCI_AGENT_PARK externalAgent4
,
641 PCI_AGENT_PARK externalAgent5
)
643 unsigned int regData
;
644 unsigned int writeData
;
646 GT_REG_READ (pci_arbiter_control
[host
], ®Data
);
647 writeData
= (internalAgent
<< 14) + (externalAgent0
<< 15) +
648 (externalAgent1
<< 16) + (externalAgent2
<< 17) +
649 (externalAgent3
<< 18) + (externalAgent4
<< 19) +
650 (externalAgent5
<< 20);
651 regData
= (regData
& ~(0x7f << 14)) | writeData
;
652 GT_REG_WRITE (pci_arbiter_control
[host
], regData
);
656 /********************************************************************
657 * pciEnableBrokenAgentDetection - A master is said to be broken if it fails to
658 * respond to grant assertion within a window specified in
659 * the input value: 'brokenValue'.
661 * Inputs: unsigned char brokenValue - A value which limits the Master to hold the
662 * grant without asserting frame.
663 * Returns: Error for illegal broken value otherwise true.
664 *********************************************************************/
665 bool pciEnableBrokenAgentDetection (PCI_HOST host
, unsigned char brokenValue
)
668 unsigned int regData
;
670 if (brokenValue
> 0xf)
671 return false; /* brokenValue must be 4 bit */
672 data
= brokenValue
<< 3;
673 GT_REG_READ (pci_arbiter_control
[host
], ®Data
);
674 regData
= (regData
& 0xffffff87) | data
;
675 GT_REG_WRITE (pci_arbiter_control
[host
], regData
| BIT1
);
679 /********************************************************************
680 * pciDisableBrokenAgentDetection - This function disable the Broken agent
681 * Detection mechanism.
682 * NOTE: This operation may cause a dead lock on the
687 *********************************************************************/
688 bool pciDisableBrokenAgentDetection (PCI_HOST host
)
690 unsigned int regData
;
692 GT_REG_READ (pci_arbiter_control
[host
], ®Data
);
693 regData
= regData
& 0xfffffffd;
694 GT_REG_WRITE (pci_arbiter_control
[host
], regData
);
698 /********************************************************************
699 * pciP2PConfig - This function set the PCI_n P2P configurate.
700 * For more information on the P2P read PCI spec.
702 * Inputs: unsigned int SecondBusLow - Secondery PCI interface Bus Range Lower
704 * unsigned int SecondBusHigh - Secondry PCI interface Bus Range upper
706 * unsigned int busNum - The CPI bus number to which the PCI interface
708 * unsigned int devNum - The PCI interface's device number.
711 *********************************************************************/
712 bool pciP2PConfig (PCI_HOST host
, unsigned int SecondBusLow
,
713 unsigned int SecondBusHigh
,
714 unsigned int busNum
, unsigned int devNum
)
716 unsigned int regData
;
718 regData
= (SecondBusLow
& 0xff) | ((SecondBusHigh
& 0xff) << 8) |
719 ((busNum
& 0xff) << 16) | ((devNum
& 0x1f) << 24);
720 GT_REG_WRITE (pci_p2p_configuration
[host
], regData
);
724 /********************************************************************
725 * pciSetRegionSnoopMode - This function modifys one of the 4 regions which
726 * supports Cache Coherency in the PCI_n interface.
727 * Inputs: region - One of the four regions.
728 * snoopType - There is four optional Types:
730 * 2. Snoop to WT region.
731 * 3. Snoop to WB region.
732 * 4. Snoop & Invalidate to WB region.
733 * baseAddress - Base Address of this region.
734 * regionLength - Region length.
735 * Returns: false if one of the parameters is wrong otherwise return true.
736 *********************************************************************/
737 bool pciSetRegionSnoopMode (PCI_HOST host
, PCI_SNOOP_REGION region
,
738 PCI_SNOOP_TYPE snoopType
,
739 unsigned int baseAddress
,
740 unsigned int regionLength
)
742 unsigned int snoopXbaseAddress
;
743 unsigned int snoopXtopAddress
;
745 unsigned int snoopHigh
= baseAddress
+ regionLength
;
747 if ((region
> PCI_SNOOP_REGION3
) || (snoopType
> PCI_SNOOP_WB
))
750 pci_snoop_control_base_0_low
[host
] + 0x10 * region
;
751 snoopXtopAddress
= pci_snoop_control_top_0
[host
] + 0x10 * region
;
752 if (regionLength
== 0) { /* closing the region */
753 GT_REG_WRITE (snoopXbaseAddress
, 0x0000ffff);
754 GT_REG_WRITE (snoopXtopAddress
, 0);
757 baseAddress
= baseAddress
& 0xfff00000; /* Granularity of 1MByte */
758 data
= (baseAddress
>> 20) | snoopType
<< 12;
759 GT_REG_WRITE (snoopXbaseAddress
, data
);
760 snoopHigh
= (snoopHigh
& 0xfff00000) >> 20;
761 GT_REG_WRITE (snoopXtopAddress
, snoopHigh
- 1);
765 static int gt_read_config_dword (struct pci_controller
*hose
,
766 pci_dev_t dev
, int offset
, u32
* value
)
768 int bus
= PCI_BUS (dev
);
770 if ((bus
== local_buses
[0]) || (bus
== local_buses
[1])) {
771 *value
= pciReadConfigReg ((PCI_HOST
) hose
->cfg_addr
, offset
,
774 *value
= pciOverBridgeReadConfigReg ((PCI_HOST
) hose
->
782 static int gt_write_config_dword (struct pci_controller
*hose
,
783 pci_dev_t dev
, int offset
, u32 value
)
785 int bus
= PCI_BUS (dev
);
787 if ((bus
== local_buses
[0]) || (bus
== local_buses
[1])) {
788 pciWriteConfigReg ((PCI_HOST
) hose
->cfg_addr
, offset
,
789 PCI_DEV (dev
), value
);
791 pciOverBridgeWriteConfigReg ((PCI_HOST
) hose
->cfg_addr
,
792 offset
, PCI_DEV (dev
), bus
,
799 static void gt_setup_ide (struct pci_controller
*hose
,
800 pci_dev_t dev
, struct pci_config_table
*entry
)
802 static const int ide_bar
[] = { 8, 4, 8, 4, 0, 0 };
803 u32 bar_response
, bar_value
;
806 for (bar
= 0; bar
< 6; bar
++) {
807 /*ronen different function for 3rd bank. */
808 unsigned int offset
=
809 (bar
< 2) ? bar
* 8 : 0x100 + (bar
- 2) * 8;
811 pci_hose_write_config_dword (hose
, dev
, PCI_BASE_ADDRESS_0
+ offset
,
813 pci_hose_read_config_dword (hose
, dev
, PCI_BASE_ADDRESS_0
+ offset
,
816 pciauto_region_allocate (bar_response
&
817 PCI_BASE_ADDRESS_SPACE_IO
? hose
->
818 pci_io
: hose
->pci_mem
, ide_bar
[bar
],
821 pci_hose_write_config_dword (hose
, dev
, PCI_BASE_ADDRESS_0
+ bar
* 4,
826 #ifdef CONFIG_USE_CPCIDVI
827 static void gt_setup_cpcidvi (struct pci_controller
*hose
,
828 pci_dev_t dev
, struct pci_config_table
*entry
)
830 u32 bar_value
, pci_response
;
832 pci_hose_read_config_dword (hose
, dev
, PCI_COMMAND
, &pci_response
);
833 pci_hose_write_config_dword (hose
, dev
, PCI_BASE_ADDRESS_0
, 0xffffffff);
834 pci_hose_read_config_dword (hose
, dev
, PCI_BASE_ADDRESS_0
, &pci_response
);
835 pciauto_region_allocate (hose
->pci_mem
, 0x01000000, &bar_value
);
836 pci_hose_write_config_dword (hose
, dev
, PCI_BASE_ADDRESS_0
, (bar_value
& 0xffffff00));
837 pci_hose_write_config_dword (hose
, dev
, PCI_ROM_ADDRESS
, 0x0);
838 pciauto_region_allocate (hose
->pci_mem
, 0x40000, &bar_value
);
839 pci_hose_write_config_dword (hose
, dev
, PCI_ROM_ADDRESS
, (bar_value
& 0xffffff00) | 0x01);
840 gt_cpcidvi_rom
.base
= bar_value
& 0xffffff00;
841 gt_cpcidvi_rom
.init
= 1;
844 unsigned char gt_cpcidvi_in8(unsigned int offset
)
848 if (gt_cpcidvi_rom
.init
== 0) {
851 data
= in8((offset
& 0x04) + 0x3f000 + gt_cpcidvi_rom
.base
);
855 void gt_cpcidvi_out8(unsigned int offset
, unsigned char data
)
859 if (gt_cpcidvi_rom
.init
== 0) {
863 off
= ((off
<< 3) & 0x7f8) + (offset
& 0x4) + 0x3e000 + gt_cpcidvi_rom
.base
;
869 /* TODO BJW: Change this for DB64360. This was pulled from the EV64260 */
870 /* and is curently not called *. */
872 static void gt_fixup_irq (struct pci_controller
*hose
, pci_dev_t dev
)
874 unsigned char pin
, irq
;
876 pci_read_config_byte (dev
, PCI_INTERRUPT_PIN
, &pin
);
878 if (pin
== 1) { /* only allow INT A */
879 irq
= pci_irq_swizzle
[(PCI_HOST
) hose
->
880 cfg_addr
][PCI_DEV (dev
)];
882 pci_write_config_byte (dev
, PCI_INTERRUPT_LINE
, irq
);
887 struct pci_config_table gt_config_table
[] = {
888 #ifdef CONFIG_USE_CPCIDVI
889 {PCI_VENDOR_ID_CT
, PCI_DEVICE_ID_CT_69030
, PCI_CLASS_DISPLAY_VGA
,
890 PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
, gt_setup_cpcidvi
},
892 {PCI_ANY_ID
, PCI_ANY_ID
, PCI_CLASS_STORAGE_IDE
,
893 PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
, gt_setup_ide
},
897 struct pci_controller pci0_hose
= {
898 /* fixup_irq: gt_fixup_irq, */
899 config_table
:gt_config_table
,
902 struct pci_controller pci1_hose
= {
903 /* fixup_irq: gt_fixup_irq, */
904 config_table
:gt_config_table
,
907 void pci_init_board (void)
909 unsigned int command
;
910 #ifdef CONFIG_PCI_PNP
914 gt_pci_bus_mode_display (PCI_HOST0
);
916 #ifdef CONFIG_USE_CPCIDVI
917 gt_cpcidvi_rom
.init
= 0;
918 gt_cpcidvi_rom
.base
= 0;
921 pci0_hose
.config_table
= gt_config_table
;
922 pci1_hose
.config_table
= gt_config_table
;
924 #ifdef CONFIG_USE_CPCIDVI
925 gt_config_table
[0].config_device
= gt_setup_cpcidvi
;
927 gt_config_table
[1].config_device
= gt_setup_ide
;
929 pci0_hose
.first_busno
= 0;
930 pci0_hose
.last_busno
= 0xff;
931 local_buses
[0] = pci0_hose
.first_busno
;
933 /* PCI memory space */
934 pci_set_region (pci0_hose
.regions
+ 0,
935 CFG_PCI0_0_MEM_SPACE
,
936 CFG_PCI0_0_MEM_SPACE
,
937 CFG_PCI0_MEM_SIZE
, PCI_REGION_MEM
);
940 pci_set_region (pci0_hose
.regions
+ 1,
941 CFG_PCI0_IO_SPACE_PCI
,
942 CFG_PCI0_IO_SPACE
, CFG_PCI0_IO_SIZE
, PCI_REGION_IO
);
944 pci_set_ops (&pci0_hose
,
945 pci_hose_read_config_byte_via_dword
,
946 pci_hose_read_config_word_via_dword
,
947 gt_read_config_dword
,
948 pci_hose_write_config_byte_via_dword
,
949 pci_hose_write_config_word_via_dword
,
950 gt_write_config_dword
);
951 pci0_hose
.region_count
= 2;
953 pci0_hose
.cfg_addr
= (unsigned int *) PCI_HOST0
;
955 pci_register_hose (&pci0_hose
);
956 pciArbiterEnable (PCI_HOST0
);
957 pciParkingDisable (PCI_HOST0
, 1, 1, 1, 1, 1, 1, 1);
958 command
= pciReadConfigReg (PCI_HOST0
, PCI_COMMAND
, SELF
);
959 command
|= PCI_COMMAND_MASTER
;
960 pciWriteConfigReg (PCI_HOST0
, PCI_COMMAND
, SELF
, command
);
961 command
= pciReadConfigReg (PCI_HOST0
, PCI_COMMAND
, SELF
);
962 command
|= PCI_COMMAND_MEMORY
;
963 pciWriteConfigReg (PCI_HOST0
, PCI_COMMAND
, SELF
, command
);
965 #ifdef CONFIG_PCI_PNP
966 pciauto_config_init(&pci0_hose
);
967 pciauto_region_allocate(pci0_hose
.pci_io
, 0x400, &bar
);
969 #ifdef CONFIG_PCI_SCAN_SHOW
970 printf("PCI: Bus Dev VenId DevId Class Int\n");
972 pci0_hose
.last_busno
= pci_hose_scan_bus (&pci0_hose
, pci0_hose
.first_busno
);
975 gt_pci_bus_mode_display (PCI_HOST1
);
977 pci1_hose
.first_busno
= pci0_hose
.last_busno
+ 1;
978 pci1_hose
.last_busno
= 0xff;
979 pci1_hose
.current_busno
= pci1_hose
.first_busno
;
980 local_buses
[1] = pci1_hose
.first_busno
;
982 /* PCI memory space */
983 pci_set_region (pci1_hose
.regions
+ 0,
984 CFG_PCI1_0_MEM_SPACE
,
985 CFG_PCI1_0_MEM_SPACE
,
986 CFG_PCI1_MEM_SIZE
, PCI_REGION_MEM
);
989 pci_set_region (pci1_hose
.regions
+ 1,
990 CFG_PCI1_IO_SPACE_PCI
,
991 CFG_PCI1_IO_SPACE
, CFG_PCI1_IO_SIZE
, PCI_REGION_IO
);
993 pci_set_ops (&pci1_hose
,
994 pci_hose_read_config_byte_via_dword
,
995 pci_hose_read_config_word_via_dword
,
996 gt_read_config_dword
,
997 pci_hose_write_config_byte_via_dword
,
998 pci_hose_write_config_word_via_dword
,
999 gt_write_config_dword
);
1001 pci1_hose
.region_count
= 2;
1003 pci1_hose
.cfg_addr
= (unsigned int *) PCI_HOST1
;
1005 pci_register_hose (&pci1_hose
);
1007 pciArbiterEnable (PCI_HOST1
);
1008 pciParkingDisable (PCI_HOST1
, 1, 1, 1, 1, 1, 1, 1);
1010 command
= pciReadConfigReg (PCI_HOST1
, PCI_COMMAND
, SELF
);
1011 command
|= PCI_COMMAND_MASTER
;
1012 pciWriteConfigReg (PCI_HOST1
, PCI_COMMAND
, SELF
, command
);
1014 #ifdef CONFIG_PCI_PNP
1015 pciauto_config_init(&pci1_hose
);
1016 pciauto_region_allocate(pci1_hose
.pci_io
, 0x400, &bar
);
1018 pci1_hose
.last_busno
= pci_hose_scan_bus (&pci1_hose
, pci1_hose
.first_busno
);
1020 command
= pciReadConfigReg (PCI_HOST1
, PCI_COMMAND
, SELF
);
1021 command
|= PCI_COMMAND_MEMORY
;
1022 pciWriteConfigReg (PCI_HOST1
, PCI_COMMAND
, SELF
, command
);
1025 #endif /* of CONFIG_PCI */