Macintosh-Tools/dingusppc
1
0
Fork 0
mirror of https://github.com/dingusdev/dingusppc.git synced 2024-12-27 00:29:18 +00:00
Code Issues Projects Releases Wiki Activity
2b6f41e0d0
dingusppc/devices/common/pci/pcidevice.cpp

78 lines
2.3 KiB
C++
Raw Normal View History

Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
/*
DingusPPC - The Experimental PowerPC Macintosh emulator
pcidevice: improve BAR configuration.
2023-02-04 16:57:46 +00:00
Copyright (C) 2018-23 divingkatae and maximum
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <devices/common/pci/pcidevice.h>
#include <loguru.hpp>
#include <cinttypes>
pcidevice: loading of expansion ROMs from files.
2022-04-13 21:01:27 +00:00
#include <fstream>
Add missing header.
2022-12-25 04:36:22 +00:00
#include <cstring>
pcidevice: loading of expansion ROMs from files.
2022-04-13 21:01:27 +00:00
#include <string>
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
pci: Add PCI CardBus bridge. PCCard is used by PowerBook G3 Wallstreet in Open Firmware 2.0.1. CardBus is probed in New World Macs starting from at least Open Firmware 4.1.9f1 sometime after Open Firmware 3.1.1. - Create PCIBase from common stuff in PCIDevice. - Add PCIBridgeBase. These have a primary bus number, secondary bus number, and subordinate bus number which are used to determine if PCI type 1 config cycle should be passed. - Change PCIBridge to use PCIBridgeBase instead of PCIDevice. - Add PCICardBusBridge which uses PCIBridgeBase.
2023-06-08 14:09:29 +00:00
PCIDevice::PCIDevice(std::string name) : PCIBase(name, PCI_HEADER_TYPE_0, 6)
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
{
};
Fix PCI config r/w of byte and word and unaligned. dingusppc could not read bytes from offset 1,2,3 or words from offset 2. dingusppc did not read words from offset 1,3 and longs from offset 1,2,3 in the same way as a real Power Mac 8600 or B&W G3. This commit fixes those issues. - Added pci_cfg_rev_read. It takes a 32 bit value from offset 0 and returns a value of the specified size using bytes starting from the specified offset. Offsets 4,5, & 6 wrap around to 0,1, & 2 respectively. The result bytes are in flipped order as required by the read method (so a value of 0x12345678 is returned as 0x78563412) A real Power Mac 8600 might return a random byte for offset 4, 5, 6 for vci0 but usually not for pci1. A B&W G3 seems to always wrap around correctly. We won't read random bytes, and we won't read a default such as 00 or FF. We'll do the wrap around which makes the most sense because writing 0x12345678 to any offset and reading from the same offset should produce the value that was written. - Added pci_cfg_rev_write. It takes a 32 bit value from offset 0, and modifies a specified number of bytes starting at a specified offset with the offset wrapping around to 0 if it exceeds 3. The modified bytes take their new values from the flipped bytes passed to pci_cfg_write. When size is 4, the original value is not used since all bytes will be modified. Basically, those two functions handle all the sizes and all the offsets and replace calls to BYTESWAP_32, read_mem or read_mem_rev, and write_mem or write_mem_rev. read_mem_rev, as it was used by pcidevice and some other places, could read beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always read the wrong byte or word if they were not at offset 0. Same for read_mem as used by mpc106. write_mem_rev, as it was used by pcidevice and some other places, could write beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always write the wrong byte or word if they were not at offset 0. Same for write_mem as used by mpc106. pcidevice: - The logging macros should be used to handle all config register access logging. - Unaligned PCI config register accesses will be output as ERROR instead of WARNING. - The logging macros include the offset and size. They also include the value for named registers or for writes. - Added MMIODevice read and write methods so that PCIDevice is not abstract if a PCIDevice doesn't override the read and write method since some PCIDevices don't have MMIO. pcihost: - Added pci_find_device stub for handling PCI bridges in future commit. bandit and mpc106: - PCI host controllers will handle all PCI config access alignment and sizing. A PCIDevice will always access config registers as 32 bits on a 4 byte boundary. The AccessDetails passed to a PCIDevice config read or write method is there only for logging purposes. bandit: - Common MMIO code is moved to new BanditHost class so both Bandit and Chaos can use it. PCI related code is moved to new BanditPCI class. - Simplify IDSEL to/from PCI device number conversion by removing the shift or subtract. - Remove BANDIT_ID_SEL check. The IDSEL conversion to PCI device number can find the bandit PCI device. - For logging, make best guess of PCI device number from invalid IDSEL - the result is always reasonable for device 0x00 to 0x0A when accessing config register 0x00 (as one would do when scanning for PCI devices like lspci does). mpc106: - Common config space code is put in cfg_setup. It handles extracting the offset. - Added code to log access to unimplemented config registers of grackle. - Don't call setup_ram when writing to config registers that setup_ram doesn't use. - pci_cfg_read calls READ_DWORD_LE_A and pci_cfg_write calls WRITE_DWORD_LE_A. When reading or writing memory that is organized as little endian dwords, such as my_pci_cfg_hdr of mpc106, the function should explicitly state that it's little endian so that the emulator may be ported one day to a CPU architecture that is not little endian. atirage: - The changes correctly place user_cfg at byte 0x40 instead of 0x43 and writes the correct byte depending on size and offset.
2022-09-02 10:32:28 +00:00
uint32_t PCIDevice::pci_cfg_read(uint32_t reg_offs, AccessDetails &details)
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
{
switch (reg_offs) {
case PCI_CFG_BAR0:
case PCI_CFG_BAR1:
case PCI_CFG_BAR2:
case PCI_CFG_BAR3:
case PCI_CFG_BAR4:
case PCI_CFG_BAR5:
Fix PCI config r/w of byte and word and unaligned. dingusppc could not read bytes from offset 1,2,3 or words from offset 2. dingusppc did not read words from offset 1,3 and longs from offset 1,2,3 in the same way as a real Power Mac 8600 or B&W G3. This commit fixes those issues. - Added pci_cfg_rev_read. It takes a 32 bit value from offset 0 and returns a value of the specified size using bytes starting from the specified offset. Offsets 4,5, & 6 wrap around to 0,1, & 2 respectively. The result bytes are in flipped order as required by the read method (so a value of 0x12345678 is returned as 0x78563412) A real Power Mac 8600 might return a random byte for offset 4, 5, 6 for vci0 but usually not for pci1. A B&W G3 seems to always wrap around correctly. We won't read random bytes, and we won't read a default such as 00 or FF. We'll do the wrap around which makes the most sense because writing 0x12345678 to any offset and reading from the same offset should produce the value that was written. - Added pci_cfg_rev_write. It takes a 32 bit value from offset 0, and modifies a specified number of bytes starting at a specified offset with the offset wrapping around to 0 if it exceeds 3. The modified bytes take their new values from the flipped bytes passed to pci_cfg_write. When size is 4, the original value is not used since all bytes will be modified. Basically, those two functions handle all the sizes and all the offsets and replace calls to BYTESWAP_32, read_mem or read_mem_rev, and write_mem or write_mem_rev. read_mem_rev, as it was used by pcidevice and some other places, could read beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always read the wrong byte or word if they were not at offset 0. Same for read_mem as used by mpc106. write_mem_rev, as it was used by pcidevice and some other places, could write beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always write the wrong byte or word if they were not at offset 0. Same for write_mem as used by mpc106. pcidevice: - The logging macros should be used to handle all config register access logging. - Unaligned PCI config register accesses will be output as ERROR instead of WARNING. - The logging macros include the offset and size. They also include the value for named registers or for writes. - Added MMIODevice read and write methods so that PCIDevice is not abstract if a PCIDevice doesn't override the read and write method since some PCIDevices don't have MMIO. pcihost: - Added pci_find_device stub for handling PCI bridges in future commit. bandit and mpc106: - PCI host controllers will handle all PCI config access alignment and sizing. A PCIDevice will always access config registers as 32 bits on a 4 byte boundary. The AccessDetails passed to a PCIDevice config read or write method is there only for logging purposes. bandit: - Common MMIO code is moved to new BanditHost class so both Bandit and Chaos can use it. PCI related code is moved to new BanditPCI class. - Simplify IDSEL to/from PCI device number conversion by removing the shift or subtract. - Remove BANDIT_ID_SEL check. The IDSEL conversion to PCI device number can find the bandit PCI device. - For logging, make best guess of PCI device number from invalid IDSEL - the result is always reasonable for device 0x00 to 0x0A when accessing config register 0x00 (as one would do when scanning for PCI devices like lspci does). mpc106: - Common config space code is put in cfg_setup. It handles extracting the offset. - Added code to log access to unimplemented config registers of grackle. - Don't call setup_ram when writing to config registers that setup_ram doesn't use. - pci_cfg_read calls READ_DWORD_LE_A and pci_cfg_write calls WRITE_DWORD_LE_A. When reading or writing memory that is organized as little endian dwords, such as my_pci_cfg_hdr of mpc106, the function should explicitly state that it's little endian so that the emulator may be ported one day to a CPU architecture that is not little endian. atirage: - The changes correctly place user_cfg at byte 0x40 instead of 0x43 and writes the correct byte depending on size and offset.
2022-09-02 10:32:28 +00:00
return this->bars[(reg_offs - 0x10) >> 2];
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
case PCI_CFG_SUBSYS_ID:
Fix PCI config r/w of byte and word and unaligned. dingusppc could not read bytes from offset 1,2,3 or words from offset 2. dingusppc did not read words from offset 1,3 and longs from offset 1,2,3 in the same way as a real Power Mac 8600 or B&W G3. This commit fixes those issues. - Added pci_cfg_rev_read. It takes a 32 bit value from offset 0 and returns a value of the specified size using bytes starting from the specified offset. Offsets 4,5, & 6 wrap around to 0,1, & 2 respectively. The result bytes are in flipped order as required by the read method (so a value of 0x12345678 is returned as 0x78563412) A real Power Mac 8600 might return a random byte for offset 4, 5, 6 for vci0 but usually not for pci1. A B&W G3 seems to always wrap around correctly. We won't read random bytes, and we won't read a default such as 00 or FF. We'll do the wrap around which makes the most sense because writing 0x12345678 to any offset and reading from the same offset should produce the value that was written. - Added pci_cfg_rev_write. It takes a 32 bit value from offset 0, and modifies a specified number of bytes starting at a specified offset with the offset wrapping around to 0 if it exceeds 3. The modified bytes take their new values from the flipped bytes passed to pci_cfg_write. When size is 4, the original value is not used since all bytes will be modified. Basically, those two functions handle all the sizes and all the offsets and replace calls to BYTESWAP_32, read_mem or read_mem_rev, and write_mem or write_mem_rev. read_mem_rev, as it was used by pcidevice and some other places, could read beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always read the wrong byte or word if they were not at offset 0. Same for read_mem as used by mpc106. write_mem_rev, as it was used by pcidevice and some other places, could write beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always write the wrong byte or word if they were not at offset 0. Same for write_mem as used by mpc106. pcidevice: - The logging macros should be used to handle all config register access logging. - Unaligned PCI config register accesses will be output as ERROR instead of WARNING. - The logging macros include the offset and size. They also include the value for named registers or for writes. - Added MMIODevice read and write methods so that PCIDevice is not abstract if a PCIDevice doesn't override the read and write method since some PCIDevices don't have MMIO. pcihost: - Added pci_find_device stub for handling PCI bridges in future commit. bandit and mpc106: - PCI host controllers will handle all PCI config access alignment and sizing. A PCIDevice will always access config registers as 32 bits on a 4 byte boundary. The AccessDetails passed to a PCIDevice config read or write method is there only for logging purposes. bandit: - Common MMIO code is moved to new BanditHost class so both Bandit and Chaos can use it. PCI related code is moved to new BanditPCI class. - Simplify IDSEL to/from PCI device number conversion by removing the shift or subtract. - Remove BANDIT_ID_SEL check. The IDSEL conversion to PCI device number can find the bandit PCI device. - For logging, make best guess of PCI device number from invalid IDSEL - the result is always reasonable for device 0x00 to 0x0A when accessing config register 0x00 (as one would do when scanning for PCI devices like lspci does). mpc106: - Common config space code is put in cfg_setup. It handles extracting the offset. - Added code to log access to unimplemented config registers of grackle. - Don't call setup_ram when writing to config registers that setup_ram doesn't use. - pci_cfg_read calls READ_DWORD_LE_A and pci_cfg_write calls WRITE_DWORD_LE_A. When reading or writing memory that is organized as little endian dwords, such as my_pci_cfg_hdr of mpc106, the function should explicitly state that it's little endian so that the emulator may be ported one day to a CPU architecture that is not little endian. atirage: - The changes correctly place user_cfg at byte 0x40 instead of 0x43 and writes the correct byte depending on size and offset.
2022-09-02 10:32:28 +00:00
return (this->subsys_id << 16) | (this->subsys_vndr);
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
case PCI_CFG_ROM_BAR:
Fix PCI config r/w of byte and word and unaligned. dingusppc could not read bytes from offset 1,2,3 or words from offset 2. dingusppc did not read words from offset 1,3 and longs from offset 1,2,3 in the same way as a real Power Mac 8600 or B&W G3. This commit fixes those issues. - Added pci_cfg_rev_read. It takes a 32 bit value from offset 0 and returns a value of the specified size using bytes starting from the specified offset. Offsets 4,5, & 6 wrap around to 0,1, & 2 respectively. The result bytes are in flipped order as required by the read method (so a value of 0x12345678 is returned as 0x78563412) A real Power Mac 8600 might return a random byte for offset 4, 5, 6 for vci0 but usually not for pci1. A B&W G3 seems to always wrap around correctly. We won't read random bytes, and we won't read a default such as 00 or FF. We'll do the wrap around which makes the most sense because writing 0x12345678 to any offset and reading from the same offset should produce the value that was written. - Added pci_cfg_rev_write. It takes a 32 bit value from offset 0, and modifies a specified number of bytes starting at a specified offset with the offset wrapping around to 0 if it exceeds 3. The modified bytes take their new values from the flipped bytes passed to pci_cfg_write. When size is 4, the original value is not used since all bytes will be modified. Basically, those two functions handle all the sizes and all the offsets and replace calls to BYTESWAP_32, read_mem or read_mem_rev, and write_mem or write_mem_rev. read_mem_rev, as it was used by pcidevice and some other places, could read beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always read the wrong byte or word if they were not at offset 0. Same for read_mem as used by mpc106. write_mem_rev, as it was used by pcidevice and some other places, could write beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always write the wrong byte or word if they were not at offset 0. Same for write_mem as used by mpc106. pcidevice: - The logging macros should be used to handle all config register access logging. - Unaligned PCI config register accesses will be output as ERROR instead of WARNING. - The logging macros include the offset and size. They also include the value for named registers or for writes. - Added MMIODevice read and write methods so that PCIDevice is not abstract if a PCIDevice doesn't override the read and write method since some PCIDevices don't have MMIO. pcihost: - Added pci_find_device stub for handling PCI bridges in future commit. bandit and mpc106: - PCI host controllers will handle all PCI config access alignment and sizing. A PCIDevice will always access config registers as 32 bits on a 4 byte boundary. The AccessDetails passed to a PCIDevice config read or write method is there only for logging purposes. bandit: - Common MMIO code is moved to new BanditHost class so both Bandit and Chaos can use it. PCI related code is moved to new BanditPCI class. - Simplify IDSEL to/from PCI device number conversion by removing the shift or subtract. - Remove BANDIT_ID_SEL check. The IDSEL conversion to PCI device number can find the bandit PCI device. - For logging, make best guess of PCI device number from invalid IDSEL - the result is always reasonable for device 0x00 to 0x0A when accessing config register 0x00 (as one would do when scanning for PCI devices like lspci does). mpc106: - Common config space code is put in cfg_setup. It handles extracting the offset. - Added code to log access to unimplemented config registers of grackle. - Don't call setup_ram when writing to config registers that setup_ram doesn't use. - pci_cfg_read calls READ_DWORD_LE_A and pci_cfg_write calls WRITE_DWORD_LE_A. When reading or writing memory that is organized as little endian dwords, such as my_pci_cfg_hdr of mpc106, the function should explicitly state that it's little endian so that the emulator may be ported one day to a CPU architecture that is not little endian. atirage: - The changes correctly place user_cfg at byte 0x40 instead of 0x43 and writes the correct byte depending on size and offset.
2022-09-02 10:32:28 +00:00
return this->exp_rom_bar;
pci: Add PCI CardBus bridge. PCCard is used by PowerBook G3 Wallstreet in Open Firmware 2.0.1. CardBus is probed in New World Macs starting from at least Open Firmware 4.1.9f1 sometime after Open Firmware 3.1.1. - Create PCIBase from common stuff in PCIDevice. - Add PCIBridgeBase. These have a primary bus number, secondary bus number, and subordinate bus number which are used to determine if PCI type 1 config cycle should be passed. - Change PCIBridge to use PCIBridgeBase instead of PCIDevice. - Add PCICardBusBridge which uses PCIBridgeBase.
2023-06-08 14:09:29 +00:00
case PCI_CFG_DWORD_13:
return cap_ptr;
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
case PCI_CFG_DWORD_15:
Fix PCI config r/w of byte and word and unaligned. dingusppc could not read bytes from offset 1,2,3 or words from offset 2. dingusppc did not read words from offset 1,3 and longs from offset 1,2,3 in the same way as a real Power Mac 8600 or B&W G3. This commit fixes those issues. - Added pci_cfg_rev_read. It takes a 32 bit value from offset 0 and returns a value of the specified size using bytes starting from the specified offset. Offsets 4,5, & 6 wrap around to 0,1, & 2 respectively. The result bytes are in flipped order as required by the read method (so a value of 0x12345678 is returned as 0x78563412) A real Power Mac 8600 might return a random byte for offset 4, 5, 6 for vci0 but usually not for pci1. A B&W G3 seems to always wrap around correctly. We won't read random bytes, and we won't read a default such as 00 or FF. We'll do the wrap around which makes the most sense because writing 0x12345678 to any offset and reading from the same offset should produce the value that was written. - Added pci_cfg_rev_write. It takes a 32 bit value from offset 0, and modifies a specified number of bytes starting at a specified offset with the offset wrapping around to 0 if it exceeds 3. The modified bytes take their new values from the flipped bytes passed to pci_cfg_write. When size is 4, the original value is not used since all bytes will be modified. Basically, those two functions handle all the sizes and all the offsets and replace calls to BYTESWAP_32, read_mem or read_mem_rev, and write_mem or write_mem_rev. read_mem_rev, as it was used by pcidevice and some other places, could read beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always read the wrong byte or word if they were not at offset 0. Same for read_mem as used by mpc106. write_mem_rev, as it was used by pcidevice and some other places, could write beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always write the wrong byte or word if they were not at offset 0. Same for write_mem as used by mpc106. pcidevice: - The logging macros should be used to handle all config register access logging. - Unaligned PCI config register accesses will be output as ERROR instead of WARNING. - The logging macros include the offset and size. They also include the value for named registers or for writes. - Added MMIODevice read and write methods so that PCIDevice is not abstract if a PCIDevice doesn't override the read and write method since some PCIDevices don't have MMIO. pcihost: - Added pci_find_device stub for handling PCI bridges in future commit. bandit and mpc106: - PCI host controllers will handle all PCI config access alignment and sizing. A PCIDevice will always access config registers as 32 bits on a 4 byte boundary. The AccessDetails passed to a PCIDevice config read or write method is there only for logging purposes. bandit: - Common MMIO code is moved to new BanditHost class so both Bandit and Chaos can use it. PCI related code is moved to new BanditPCI class. - Simplify IDSEL to/from PCI device number conversion by removing the shift or subtract. - Remove BANDIT_ID_SEL check. The IDSEL conversion to PCI device number can find the bandit PCI device. - For logging, make best guess of PCI device number from invalid IDSEL - the result is always reasonable for device 0x00 to 0x0A when accessing config register 0x00 (as one would do when scanning for PCI devices like lspci does). mpc106: - Common config space code is put in cfg_setup. It handles extracting the offset. - Added code to log access to unimplemented config registers of grackle. - Don't call setup_ram when writing to config registers that setup_ram doesn't use. - pci_cfg_read calls READ_DWORD_LE_A and pci_cfg_write calls WRITE_DWORD_LE_A. When reading or writing memory that is organized as little endian dwords, such as my_pci_cfg_hdr of mpc106, the function should explicitly state that it's little endian so that the emulator may be ported one day to a CPU architecture that is not little endian. atirage: - The changes correctly place user_cfg at byte 0x40 instead of 0x43 and writes the correct byte depending on size and offset.
2022-09-02 10:32:28 +00:00
return (max_lat << 24) | (min_gnt << 16) | (irq_pin << 8) | irq_line;
pci: Add PCI CardBus bridge. PCCard is used by PowerBook G3 Wallstreet in Open Firmware 2.0.1. CardBus is probed in New World Macs starting from at least Open Firmware 4.1.9f1 sometime after Open Firmware 3.1.1. - Create PCIBase from common stuff in PCIDevice. - Add PCIBridgeBase. These have a primary bus number, secondary bus number, and subordinate bus number which are used to determine if PCI type 1 config cycle should be passed. - Change PCIBridge to use PCIBridgeBase instead of PCIDevice. - Add PCICardBusBridge which uses PCIBridgeBase.
2023-06-08 14:09:29 +00:00
default:
return PCIBase::pci_cfg_read(reg_offs, details);
Revert "PCI fixes"
2022-09-02 23:24:06 +00:00
}
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
}
Fix PCI config r/w of byte and word and unaligned. dingusppc could not read bytes from offset 1,2,3 or words from offset 2. dingusppc did not read words from offset 1,3 and longs from offset 1,2,3 in the same way as a real Power Mac 8600 or B&W G3. This commit fixes those issues. - Added pci_cfg_rev_read. It takes a 32 bit value from offset 0 and returns a value of the specified size using bytes starting from the specified offset. Offsets 4,5, & 6 wrap around to 0,1, & 2 respectively. The result bytes are in flipped order as required by the read method (so a value of 0x12345678 is returned as 0x78563412) A real Power Mac 8600 might return a random byte for offset 4, 5, 6 for vci0 but usually not for pci1. A B&W G3 seems to always wrap around correctly. We won't read random bytes, and we won't read a default such as 00 or FF. We'll do the wrap around which makes the most sense because writing 0x12345678 to any offset and reading from the same offset should produce the value that was written. - Added pci_cfg_rev_write. It takes a 32 bit value from offset 0, and modifies a specified number of bytes starting at a specified offset with the offset wrapping around to 0 if it exceeds 3. The modified bytes take their new values from the flipped bytes passed to pci_cfg_write. When size is 4, the original value is not used since all bytes will be modified. Basically, those two functions handle all the sizes and all the offsets and replace calls to BYTESWAP_32, read_mem or read_mem_rev, and write_mem or write_mem_rev. read_mem_rev, as it was used by pcidevice and some other places, could read beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always read the wrong byte or word if they were not at offset 0. Same for read_mem as used by mpc106. write_mem_rev, as it was used by pcidevice and some other places, could write beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always write the wrong byte or word if they were not at offset 0. Same for write_mem as used by mpc106. pcidevice: - The logging macros should be used to handle all config register access logging. - Unaligned PCI config register accesses will be output as ERROR instead of WARNING. - The logging macros include the offset and size. They also include the value for named registers or for writes. - Added MMIODevice read and write methods so that PCIDevice is not abstract if a PCIDevice doesn't override the read and write method since some PCIDevices don't have MMIO. pcihost: - Added pci_find_device stub for handling PCI bridges in future commit. bandit and mpc106: - PCI host controllers will handle all PCI config access alignment and sizing. A PCIDevice will always access config registers as 32 bits on a 4 byte boundary. The AccessDetails passed to a PCIDevice config read or write method is there only for logging purposes. bandit: - Common MMIO code is moved to new BanditHost class so both Bandit and Chaos can use it. PCI related code is moved to new BanditPCI class. - Simplify IDSEL to/from PCI device number conversion by removing the shift or subtract. - Remove BANDIT_ID_SEL check. The IDSEL conversion to PCI device number can find the bandit PCI device. - For logging, make best guess of PCI device number from invalid IDSEL - the result is always reasonable for device 0x00 to 0x0A when accessing config register 0x00 (as one would do when scanning for PCI devices like lspci does). mpc106: - Common config space code is put in cfg_setup. It handles extracting the offset. - Added code to log access to unimplemented config registers of grackle. - Don't call setup_ram when writing to config registers that setup_ram doesn't use. - pci_cfg_read calls READ_DWORD_LE_A and pci_cfg_write calls WRITE_DWORD_LE_A. When reading or writing memory that is organized as little endian dwords, such as my_pci_cfg_hdr of mpc106, the function should explicitly state that it's little endian so that the emulator may be ported one day to a CPU architecture that is not little endian. atirage: - The changes correctly place user_cfg at byte 0x40 instead of 0x43 and writes the correct byte depending on size and offset.
2022-09-02 10:32:28 +00:00
void PCIDevice::pci_cfg_write(uint32_t reg_offs, uint32_t value, AccessDetails &details)
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
{
switch (reg_offs) {
case PCI_CFG_BAR0:
case PCI_CFG_BAR1:
case PCI_CFG_BAR2:
case PCI_CFG_BAR3:
case PCI_CFG_BAR4:
case PCI_CFG_BAR5:
Add 64-bit BAR support. While dingusppc only emulates 32-bit Macs (for now), it is possible for a 32-bit Power Mac to use a PCIe card that has 64-bit BARs. finish_config_bars is added to scan the cfg values of the BARs and determine their type. The type is stored separately so that it does not need to be determined again. The type can be I/O (16 or 32 bit) or Mem (20 or 32 or 64 bit). A 64 bit bar is two BARs, the second contains the most significant 32 bits. set_bar_value uses the stored type instead of trying to determine the type itself. It is always called even when the firmware is doing sizing. For sizing, It does the job of setting the bar value so do_bar_sizing is now just a stub. Every PCIDevice that has a BAR needs to call finish_config_bars after setting up the cfg values just as they need to setup the cfg values. Since they need to do both, maybe the cfg values should be arguments of finish_config_bars, then finish_config_bars() should be renamed config_bars().
2022-12-11 21:37:14 +00:00
this->set_bar_value((reg_offs - 0x10) >> 2, value);
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
break;
case PCI_CFG_ROM_BAR:
Add PCI bridge and multi-function device support. Add PCI bridge and multi-function device support. Overview: - A multi-function device is two or more PCIDevices with the same device number but one device is function zero (as with currently implemented PCIDevices) and the other functions have function numbers between 1 and 7. The device number and function number are properties of the PCIDevice's parent PCIHost connection. - A PCIBridge is a PCIHost (it can connect child PCI devices) and a PCIDevice (it has config space, BARs, and expansion ROM). - A PCIDevice has Type 0 header. It has 6 BARs. - A PCIBridge has Type 1 header. It has 2 BARs. The config space registers beginning from offset 0x18 differ from those of a PCIDevice. Possible future modifications: - Add a PCICardBus class. It is a PCIHost. It has Type 2 header. It has one BAR. The first 20 bytes match Type 0 and Type 1 headers. These exist in New World Macs. They allow hot-plug of PCI devices. - Split base PCI registers (first 16 bytes) into a PCIBase class. Type 1 and 2 have two or one BAR but I think all 6 BARs belong in PCIBase class anyway. - Split PCIHost into two classes: Currently existing PCIHosts (Bandit, Grackle) are PCIHost and PCIRoot (they have the broadcast I/O requests functionality) while PCIBridge is PCIHost only - it can propagate I/O requests but does not originate the broadcast. - pci_register_mmio_region should maybe return a pointer to a region struct so that it can be used for unregistering or modifying the region's range. This may be useful for PCI bridges which have ranges that may constrain memory BARs of their downstream devices. PCIDevice - Moved expansion ROM BAR handling to a separate function pci_wr_exp_rom_bar so that it can be used by both PCI devices and PCI bridges which have the ROM BAR in different locations. It now supports unmapping expansion ROM. Also made exp_rom_bar not writable if there's no ROM. - Added num_bars field which specifies the number of valid BARs since Type 0, 1, and 2 headers have different number of BARs. - map_exp_rom_mem now properly unmaps expansion ROM (using new function unmap_exp_rom_mem) before mapping it again. - Added function set_multi_function which modifies hdr_type to indicate if a device has other functions. This is to be applied only to devices with function number 0. PCIHost - When attaching a PCI device, it will check if it's a multi-function device (there exists an attached function that is not zero) and adjust hdr_type of function 0 of the device accordingly. - Attached PCI bridges are added to a list of PCI bridges attached to the host. - Added pci_io_read_loop and pci_io_write_loop which loop through attached PCI devices to find one that will perform the action for the given I/O address without logging an error (since some other device might perform the action). - Added pci_io_read_broadcast and pci_io_write_broadcast which are used by a PCI root (bandit/grackle). They will log an error if the action is not performed. They should probably do a machine check exception to match real Power Macs. - pci_find_device (used by PCI root) will recursively find a PCIDevice for type 1 config register accesses. - Logging from PCIHost now includes the name of the PCIHost instead of just "PCIHost" because there can be multiple PCI hosts. PCIBridge - Sets num_bars to 2 and hdr_type to 1. - I/O ranges set in the config registers are handled correctly by pci_io_read and pci_io_write. - Memory ranges set in the config registers do not currently affect memory mmio regions. It is assumed that Open Firmware and the OS will set the ranges and BARs correctly to allow all BARs to be accessed fully. bandit, mpc106 - Bandit and Grackle now call pci_io_read_broadcast and pci_io_read_broadcast to pass I/O accesses to downstream PCI devices. - Chaos is modified to work like Bandit even though it will never have PCI bridges attached or devices that support I/O accesses. It's simpler this way.
2022-10-26 06:06:12 +00:00
this->pci_wr_exp_rom_bar(value);
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
break;
case PCI_CFG_DWORD_15:
Fix PCI config r/w of byte and word and unaligned. dingusppc could not read bytes from offset 1,2,3 or words from offset 2. dingusppc did not read words from offset 1,3 and longs from offset 1,2,3 in the same way as a real Power Mac 8600 or B&W G3. This commit fixes those issues. - Added pci_cfg_rev_read. It takes a 32 bit value from offset 0 and returns a value of the specified size using bytes starting from the specified offset. Offsets 4,5, & 6 wrap around to 0,1, & 2 respectively. The result bytes are in flipped order as required by the read method (so a value of 0x12345678 is returned as 0x78563412) A real Power Mac 8600 might return a random byte for offset 4, 5, 6 for vci0 but usually not for pci1. A B&W G3 seems to always wrap around correctly. We won't read random bytes, and we won't read a default such as 00 or FF. We'll do the wrap around which makes the most sense because writing 0x12345678 to any offset and reading from the same offset should produce the value that was written. - Added pci_cfg_rev_write. It takes a 32 bit value from offset 0, and modifies a specified number of bytes starting at a specified offset with the offset wrapping around to 0 if it exceeds 3. The modified bytes take their new values from the flipped bytes passed to pci_cfg_write. When size is 4, the original value is not used since all bytes will be modified. Basically, those two functions handle all the sizes and all the offsets and replace calls to BYTESWAP_32, read_mem or read_mem_rev, and write_mem or write_mem_rev. read_mem_rev, as it was used by pcidevice and some other places, could read beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always read the wrong byte or word if they were not at offset 0. Same for read_mem as used by mpc106. write_mem_rev, as it was used by pcidevice and some other places, could write beyond offset 3 if it were ever passed a reg_offs value that did not have offset as 0. Since the offset was always zero, it would always write the wrong byte or word if they were not at offset 0. Same for write_mem as used by mpc106. pcidevice: - The logging macros should be used to handle all config register access logging. - Unaligned PCI config register accesses will be output as ERROR instead of WARNING. - The logging macros include the offset and size. They also include the value for named registers or for writes. - Added MMIODevice read and write methods so that PCIDevice is not abstract if a PCIDevice doesn't override the read and write method since some PCIDevices don't have MMIO. pcihost: - Added pci_find_device stub for handling PCI bridges in future commit. bandit and mpc106: - PCI host controllers will handle all PCI config access alignment and sizing. A PCIDevice will always access config registers as 32 bits on a 4 byte boundary. The AccessDetails passed to a PCIDevice config read or write method is there only for logging purposes. bandit: - Common MMIO code is moved to new BanditHost class so both Bandit and Chaos can use it. PCI related code is moved to new BanditPCI class. - Simplify IDSEL to/from PCI device number conversion by removing the shift or subtract. - Remove BANDIT_ID_SEL check. The IDSEL conversion to PCI device number can find the bandit PCI device. - For logging, make best guess of PCI device number from invalid IDSEL - the result is always reasonable for device 0x00 to 0x0A when accessing config register 0x00 (as one would do when scanning for PCI devices like lspci does). mpc106: - Common config space code is put in cfg_setup. It handles extracting the offset. - Added code to log access to unimplemented config registers of grackle. - Don't call setup_ram when writing to config registers that setup_ram doesn't use. - pci_cfg_read calls READ_DWORD_LE_A and pci_cfg_write calls WRITE_DWORD_LE_A. When reading or writing memory that is organized as little endian dwords, such as my_pci_cfg_hdr of mpc106, the function should explicitly state that it's little endian so that the emulator may be ported one day to a CPU architecture that is not little endian. atirage: - The changes correctly place user_cfg at byte 0x40 instead of 0x43 and writes the correct byte depending on size and offset.
2022-09-02 10:32:28 +00:00
this->irq_line = value >> 24;
Common code for handling PCI config space.
2022-03-11 07:47:11 +00:00
break;
default:
pci: Add PCI CardBus bridge. PCCard is used by PowerBook G3 Wallstreet in Open Firmware 2.0.1. CardBus is probed in New World Macs starting from at least Open Firmware 4.1.9f1 sometime after Open Firmware 3.1.1. - Create PCIBase from common stuff in PCIDevice. - Add PCIBridgeBase. These have a primary bus number, secondary bus number, and subordinate bus number which are used to determine if PCI type 1 config cycle should be passed. - Change PCIBridge to use PCIBridgeBase instead of PCIDevice. - Add PCICardBusBridge which uses PCIBridgeBase.
2023-06-08 14:09:29 +00:00
PCIBase::pci_cfg_write(reg_offs, value, details);
Add PCI bridge and multi-function device support. Add PCI bridge and multi-function device support. Overview: - A multi-function device is two or more PCIDevices with the same device number but one device is function zero (as with currently implemented PCIDevices) and the other functions have function numbers between 1 and 7. The device number and function number are properties of the PCIDevice's parent PCIHost connection. - A PCIBridge is a PCIHost (it can connect child PCI devices) and a PCIDevice (it has config space, BARs, and expansion ROM). - A PCIDevice has Type 0 header. It has 6 BARs. - A PCIBridge has Type 1 header. It has 2 BARs. The config space registers beginning from offset 0x18 differ from those of a PCIDevice. Possible future modifications: - Add a PCICardBus class. It is a PCIHost. It has Type 2 header. It has one BAR. The first 20 bytes match Type 0 and Type 1 headers. These exist in New World Macs. They allow hot-plug of PCI devices. - Split base PCI registers (first 16 bytes) into a PCIBase class. Type 1 and 2 have two or one BAR but I think all 6 BARs belong in PCIBase class anyway. - Split PCIHost into two classes: Currently existing PCIHosts (Bandit, Grackle) are PCIHost and PCIRoot (they have the broadcast I/O requests functionality) while PCIBridge is PCIHost only - it can propagate I/O requests but does not originate the broadcast. - pci_register_mmio_region should maybe return a pointer to a region struct so that it can be used for unregistering or modifying the region's range. This may be useful for PCI bridges which have ranges that may constrain memory BARs of their downstream devices. PCIDevice - Moved expansion ROM BAR handling to a separate function pci_wr_exp_rom_bar so that it can be used by both PCI devices and PCI bridges which have the ROM BAR in different locations. It now supports unmapping expansion ROM. Also made exp_rom_bar not writable if there's no ROM. - Added num_bars field which specifies the number of valid BARs since Type 0, 1, and 2 headers have different number of BARs. - map_exp_rom_mem now properly unmaps expansion ROM (using new function unmap_exp_rom_mem) before mapping it again. - Added function set_multi_function which modifies hdr_type to indicate if a device has other functions. This is to be applied only to devices with function number 0. PCIHost - When attaching a PCI device, it will check if it's a multi-function device (there exists an attached function that is not zero) and adjust hdr_type of function 0 of the device accordingly. - Attached PCI bridges are added to a list of PCI bridges attached to the host. - Added pci_io_read_loop and pci_io_write_loop which loop through attached PCI devices to find one that will perform the action for the given I/O address without logging an error (since some other device might perform the action). - Added pci_io_read_broadcast and pci_io_write_broadcast which are used by a PCI root (bandit/grackle). They will log an error if the action is not performed. They should probably do a machine check exception to match real Power Macs. - pci_find_device (used by PCI root) will recursively find a PCIDevice for type 1 config register accesses. - Logging from PCIHost now includes the name of the PCIHost instead of just "PCIHost" because there can be multiple PCI hosts. PCIBridge - Sets num_bars to 2 and hdr_type to 1. - I/O ranges set in the config registers are handled correctly by pci_io_read and pci_io_write. - Memory ranges set in the config registers do not currently affect memory mmio regions. It is assumed that Open Firmware and the OS will set the ranges and BARs correctly to allow all BARs to be accessed fully. bandit, mpc106 - Bandit and Grackle now call pci_io_read_broadcast and pci_io_read_broadcast to pass I/O accesses to downstream PCI devices. - Chaos is modified to work like Bandit even though it will never have PCI bridges attached or devices that support I/O accesses. It's simpler this way.
2022-10-26 06:06:12 +00:00
}
pcidevice: loading of expansion ROMs from files.
2022-04-13 21:01:27 +00:00
}
Reference in New Issue Copy Permalink