My progress on real RISC-V hardware

PC case, power supply, video card, NVMe disk was delivered today. Operation of XFCE desktop on SD card with default Linux image is confirmed.

16 Likes

how about starting to investigate a previously discovered boot problem?

We wanna photos!

4 Likes

I trying to investigate it, but I still can’t solve it. Currently any attempts to set SATP register to non-zero value cause freeze. I tried to set identity mapping with huge level 2 pages. Boot loader is working on all emulators, but not on real hardware. I also tried to set trap handler, but it is not triggered on setting SATP register, operation of trap handler is confirmed on real hardware with illegal instruction.

Linux kernel definitely set SATP register and use MMU so MMU hardware is functional.

I created topic on SiFive forums, but I still have no replies.

14 Likes

Yeah, I solved problem with SATP register. It was caused by generating page faults when dirty and accessed flags are not set in PTEs. Unlike emulators where flags are managed automatically, on HiFive Unmatched flags need to be set by software.

Freedom U740-C000 Manual says:

It is important to note the U74 does not automatically set the accessed ( A ) and dirty ( D ) bits in a
Sv39 Page Table Entry (PTE). Instead, the U74 MMU will raise a page fault exception for a read
to a page with PTE.A=0 or a write to a page with PTE.D=0 .

Now kernel is running: UART log.

19 Likes

After quick fix of MMU problems in kernel caused by the same problem as above, kernel now progress to “did not find any boot partitions!”. UART log.

Next thing need to be done is adapting PCI driver to get access to USB, NVMe and video card.

31 Likes

So you don’t need help from SiFive? can you update that on the forum? I nearly posted that we would like to have some responce :slightly_smiling_face: . Was good that I kept reading :slight_smile:

1 Like

Done.

7 Likes

I trying to investigate how to work with PCI controller. Board use Synopsys Designware PCIe derived host controller. According to forum post it seems that no public documentation is available. U-boot PCIe code (pcie_dw_common.c, pcie_dw_sifive.c) can be used as reference. Access to PCI configuration space is a bit complicated because it use some kind of IOMMU (ATU (address translation unit)).

PCI device list I get by u-boot console:

00.00.00   0xf15e     0x0000     Bridge device           0x04
01.00.00   0x1b21     0x2824     Bridge device           0x04
02.00.00   0x1b21     0x2824     Bridge device           0x04
02.02.00   0x1b21     0x2824     Bridge device           0x04
02.03.00   0x1b21     0x2824     Bridge device           0x04
02.04.00   0x1b21     0x2824     Bridge device           0x04
02.08.00   0x1b21     0x2824     Bridge device           0x04
04.00.00   0x1b21     0x1142     Serial bus controller   0x03
06.00.00   0x1987     0x5013     Mass storage controller 0x08
07.00.00   0x1002     0x683f     Display controller      0x00
07.00.01   0x1002     0xaab0     Multimedia device       0x03
07.00.02   0x1002     0xad18     Multimedia device       0x80
f15e: SiFive, Inc.
1B21: ASMedia Technology Inc.
1b21:1142: ASM1042A USB 3.0 Host Controller
1987: Phison Electronics Corporation
1987:5013: PS5013 E13 NVMe Controller
1002: Advanced Micro Devices, Inc. [AMD/ATI]
1002:683f: Cape Verde PRO [Radeon HD 7750/8740 / R7 250E]
1002:aab0: Oland/Hainan/Cape Verde/Pitcairn HDMI Audio [Radeon HD 7000 Series]
1002:ad18: ?

8 Likes

I can’t find much info about 1002:ad18 either except on this GitHub page it is listed as “AMD Multimedia controller” so maybe something else related to audio.

I uploaded photos with default Linux installed on NVMe disk. Tablet works as UART terminal. Haiku is not yet ready for GUI boot for now.

CIMG4710
CIMG4711

24 Likes

I managed to get PCI configuration space access and PCI bus enumeration working.

pci_controller_init()
hostCtrlType: sifive
  reg[0]: (0xe00000000, 0x100000000)
  reg[1]: (0xdf0000000, 0x10000000)
  reg[2]: (0x100d0000, 0x1000)
  configRegs: (0x60070000, 0x10000)
  dbiRegs: (0xe00000000, 0x100000000)
  interrupt-map:
    bus: 0, dev: 0, fn: 0, childIrq: 1, parentIrq: (10, 57)
    bus: 0, dev: 0, fn: 0, childIrq: 2, parentIrq: (10, 58)
    bus: 0, dev: 0, fn: 0, childIrq: 3, parentIrq: (10, 59)
    bus: 0, dev: 0, fn: 0, childIrq: 4, parentIrq: (10, 60)
  ranges:
    IOPORT (0x81000000): child: 60080000, parent: 60080000, len: 10000
    MMIO32 (0x82000000): child: 60090000, parent: 60090000, len: ff70000
    MMIO32 (0x82000000): child: 70000000, parent: 70000000, len: 1000000
    MMIO64 (0xc3000000): child: 2000000000, parent: 2000000000, len: 2000000000
ATU:
  0: base: 0x70000000, limit: 0x70ffffff, target: 0x70000000, ctrl1: 0x0, ctrl2: 0x80000000
  1: base: 0x60080000, limit: 0x6008ffff, target: 0x60080000, ctrl1: 0x2, ctrl2: 0x80000000
AllocRegs()
AllocRegsForDevice(bus: 0, device: 0, function: 0)
  vendorID: 0xf15e
  deviceID: 0x00
  headerType: bridge
  primaryBus: 0
  secondaryBus: 1
  subordinateBus: 7
  bar[0]: MMIO64, adr: 0x70000000, size: 0x100000
  rom_bar: adr: 0x70100000, size: 0x10000
  intLine: 57
  intPin: INTA#
AllocRegsForDevice(bus: 1, device: 0, function: 0)
  vendorID: 0x1b21
  deviceID: 0x2824
  headerType: bridge
  primaryBus: 1
  secondaryBus: 2
  subordinateBus: 7
  bar[0]: MMIO32, adr: 0x0, size: 0x0
  bar[1]: MMIO32, adr: 0x0, size: 0x0
  rom_bar: adr: 0x0, size: 0x0
  intLine: 57
  intPin: INTA#
AllocRegsForDevice(bus: 2, device: 0, function: 0)
  vendorID: 0x1b21
  deviceID: 0x2824
  headerType: bridge
  primaryBus: 2
  secondaryBus: 3
  subordinateBus: 3
  bar[0]: MMIO32, adr: 0x0, size: 0x0
  bar[1]: MMIO32, adr: 0x0, size: 0x0
  rom_bar: adr: 0x0, size: 0x0
  intLine: 57
  intPin: INTA#
AllocRegsForDevice(bus: 2, device: 2, function: 0)
  vendorID: 0x1b21
  deviceID: 0x2824
  headerType: bridge
  primaryBus: 2
  secondaryBus: 4
  subordinateBus: 4
  bar[0]: MMIO32, adr: 0x0, size: 0x0
  bar[1]: MMIO32, adr: 0x0, size: 0x0
  rom_bar: adr: 0x0, size: 0x0
  intLine: 57
  intPin: INTA#
AllocRegsForDevice(bus: 2, device: 3, function: 0)
  vendorID: 0x1b21
  deviceID: 0x2824
  headerType: bridge
  primaryBus: 2
  secondaryBus: 5
  subordinateBus: 5
  bar[0]: MMIO32, adr: 0x0, size: 0x0
  bar[1]: MMIO32, adr: 0x0, size: 0x0
  rom_bar: adr: 0x0, size: 0x0
  intLine: 57
  intPin: INTA#
AllocRegsForDevice(bus: 2, device: 4, function: 0)
  vendorID: 0x1b21
  deviceID: 0x2824
  headerType: bridge
  primaryBus: 2
  secondaryBus: 6
  subordinateBus: 6
  bar[0]: MMIO32, adr: 0x0, size: 0x0
  bar[1]: MMIO32, adr: 0x0, size: 0x0
  rom_bar: adr: 0x0, size: 0x0
  intLine: 57
  intPin: INTA#
AllocRegsForDevice(bus: 2, device: 8, function: 0)
  vendorID: 0x1b21
  deviceID: 0x2824
  headerType: bridge
  primaryBus: 2
  secondaryBus: 7
  subordinateBus: 7
  bar[0]: MMIO32, adr: 0x0, size: 0x0
  bar[1]: MMIO32, adr: 0x0, size: 0x0
  rom_bar: adr: 0x0, size: 0x0
  intLine: 57
  intPin: INTA#
AllocRegsForDevice(bus: 4, device: 0, function: 0)
  vendorID: 0x1b21
  deviceID: 0x1142
  headerType: generic
  bar[0]: MMIO64, adr: 0x70200000, size: 0x8000
  bar[2]: MMIO32, adr: 0x0, size: 0x0
  bar[3]: MMIO32, adr: 0x0, size: 0x0
  bar[4]: MMIO32, adr: 0x0, size: 0x0
  bar[5]: MMIO32, adr: 0x0, size: 0x0
  rom_bar: adr: 0x0, size: 0x0
  intLine: 57
  intPin: INTA#
AllocRegsForDevice(bus: 6, device: 0, function: 0)
  vendorID: 0x1987
  deviceID: 0x5013
  headerType: generic
  bar[0]: MMIO64, adr: 0x70300000, size: 0x4000
  bar[2]: MMIO32, adr: 0x0, size: 0x0
  bar[3]: MMIO32, adr: 0x0, size: 0x0
  bar[4]: MMIO32, adr: 0x0, size: 0x0
  bar[5]: MMIO32, adr: 0x0, size: 0x0
  rom_bar: adr: 0x0, size: 0x0
  intLine: 57
  intPin: INTA#
AllocRegsForDevice(bus: 7, device: 0, function: 0)
  vendorID: 0x1002
  deviceID: 0x683f
  headerType: ?(128)
  bar[0]: MMIO64, adr: 0x2000000000, size: 0x10000000
  bar[2]: MMIO64, adr: 0x70400000, size: 0x40000
  bar[4]: IOPORT, adr: 0x60080000, size: 0x100
  bar[5]: MMIO32, adr: 0x0, size: 0x0
  rom_bar: adr: 0x70440000, size: 0x20000
  intLine: 57
  intPin: INTA#
PCI: FixupDevices: checking bus 1 behind f15e:0000
PCI: FixupDevices: checking bus 2 behind 1b21:2824
PCI: FixupDevices: checking bus 3 behind 1b21:2824
PCI: FixupDevices: checking bus 4 behind 1b21:2824
PCI: FixupDevices: checking bus 5 behind 1b21:2824
PCI: FixupDevices: checking bus 6 behind 1b21:2824
PCI: FixupDevices: checking bus 7 behind 1b21:2824
PCI: dom 0, bus 0, dev  0, func 0, changed PCI bridge control from 0x0000 to 0x0003
PCI: dom 0, bus 1, dev  0, func 0, changed PCI bridge control from 0x0008 to 0x000b
PCI: dom 0, bus 2, dev  0, func 0, changed PCI bridge control from 0x0000 to 0x0003
PCI: dom 0, bus 2, dev  2, func 0, changed PCI bridge control from 0x0000 to 0x0003
PCI: dom 0, bus 2, dev  3, func 0, changed PCI bridge control from 0x0000 to 0x0003
PCI: dom 0, bus 2, dev  4, func 0, changed PCI bridge control from 0x0000 to 0x0003
PCI: dom 0, bus 2, dev  8, func 0, changed PCI bridge control from 0x0008 to 0x000b
PCI: [dom 0, bus  0] bus   0, device  0, function  0: vendor f15e, device 0000, revision 00
PCI:   class_base 06, class_function 04, class_api 00
PCI:   line_size 08, latency 00, header_type 01, BIST 00
PCI:   subsystem_id 0000, subsystem_vendor_id 0040
PCI:   primary_bus 00, secondary_bus 01, subordinate_bus 07, secondary_latency 00
PCI:   I/O window 0000-0fff
PCI:   memory window 70200000-704fffff
PCI:   prefetchable memory window 0000002000000000-000000200fffffff
PCI:   bridge_control 0003, secondary_status 0000
PCI:   interrupt_line 39, interrupt_pin 01
PCI:   ROM base host 70100000, pci 70100000, size ??
PCI:   base reg 0: host 70000000, pci 70000000, size 00100000, flags 04
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: PM, MSI, PCIe
PCI:   Extended capabilities: Advanced Error Reporting, Secondary PCIe, Vendor Unique
PCI: [dom 0, bus  1] bus   1, device  0, function  0: vendor 1b21, device 2824, revision 01
PCI:   class_base 06, class_function 04, class_api 00
PCI:   line_size 08, latency 00, header_type 01, BIST 00
PCI:   subsystem_id 0000, subsystem_vendor_id 0040
PCI:   primary_bus 01, secondary_bus 02, subordinate_bus 07, secondary_latency 00
PCI:   I/O window 60080000-60080fff
PCI:   memory window 70200000-704fffff
PCI:   prefetchable memory window 0000002000000000-000000200fffffff
PCI:   bridge_control 000b, secondary_status 0000
PCI:   interrupt_line 39, interrupt_pin 01
PCI:   ROM base host 00000000, pci 00000000, size ??
PCI:   base reg 0: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: PM, MSI, PCIe, subvendor
PCI:   Extended capabilities: Advanced Error Reporting, Power Budgeting, Latency Tolerance Reporting, Multicast, Secondary PCIe, Vendor Unique
PCI: [dom 0, bus  2] bus   2, device  0, function  0: vendor 1b21, device 2824, revision 01
PCI:   class_base 06, class_function 04, class_api 00
PCI:   line_size 08, latency 00, header_type 01, BIST 00
PCI:   subsystem_id 0000, subsystem_vendor_id 0040
PCI:   primary_bus 02, secondary_bus 03, subordinate_bus 03, secondary_latency 00
PCI:   I/O window 60080000-6007ffff
PCI:   memory window 70200000-701fffff
PCI:   prefetchable memory window 0000002000000000-0000001fffffffff
PCI:   bridge_control 0003, secondary_status 0000
PCI:   interrupt_line 39, interrupt_pin 01
PCI:   ROM base host 00000000, pci 00000000, size ??
PCI:   base reg 0: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: PM, MSI, PCIe, subvendor
PCI:   Extended capabilities: Advanced Error Reporting, Power Budgeting, Latency Tolerance Reporting, Multicast, Secondary PCIe, Vendor Unique
PCI: [dom 0, bus  2] bus   2, device  2, function  0: vendor 1b21, device 2824, revision 01
PCI:   class_base 06, class_function 04, class_api 00
PCI:   line_size 08, latency 00, header_type 01, BIST 00
PCI:   subsystem_id 0000, subsystem_vendor_id 0040
PCI:   primary_bus 02, secondary_bus 04, subordinate_bus 04, secondary_latency 00
PCI:   I/O window 60080000-6007ffff
PCI:   memory window 70200000-702fffff
PCI:   prefetchable memory window 0000002000000000-0000001fffffffff
PCI:   bridge_control 0003, secondary_status 0000
PCI:   interrupt_line 39, interrupt_pin 01
PCI:   ROM base host 00000000, pci 00000000, size ??
PCI:   base reg 0: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: PM, MSI, PCIe, subvendor
PCI:   Extended capabilities: Advanced Error Reporting, Power Budgeting, Latency Tolerance Reporting, Multicast, Secondary PCIe, Vendor Unique
PCI: [dom 0, bus  4] bus   3, device  0, function  0: vendor 1b21, device 1142, revision 00
PCI:   class_base 0c, class_function 03, class_api 30
PCI:   line_size 08, latency 00, header_type 00, BIST 00
PCI:   ROM base host 00000000, pci 00000000, size 00000000
PCI:   cardbus_CIS 00000000, subsystem_id 1142, subsystem_vendor_id 1b21
PCI:   interrupt_line 39, interrupt_pin 01, min_grant 00, max_latency 00
PCI:   base reg 0: host 70200000, pci 70200000, size 00008000, flags 04
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 2: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 3: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 4: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 5: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: MSI, MSI-X, PM, PCIe
PCI:   Extended capabilities: Virtual Channel
PCI: [dom 0, bus  2] bus   2, device  3, function  0: vendor 1b21, device 2824, revision 01
PCI:   class_base 06, class_function 04, class_api 00
PCI:   line_size 08, latency 00, header_type 01, BIST 00
PCI:   subsystem_id 0000, subsystem_vendor_id 0040
PCI:   primary_bus 02, secondary_bus 05, subordinate_bus 05, secondary_latency 00
PCI:   I/O window 60080000-6007ffff
PCI:   memory window 70300000-702fffff
PCI:   prefetchable memory window 0000002000000000-0000001fffffffff
PCI:   bridge_control 0003, secondary_status 0000
PCI:   interrupt_line 39, interrupt_pin 01
PCI:   ROM base host 00000000, pci 00000000, size ??
PCI:   base reg 0: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: PM, MSI, PCIe, subvendor
PCI:   Extended capabilities: Advanced Error Reporting, Power Budgeting, Latency Tolerance Reporting, Multicast, Secondary PCIe, Vendor Unique
PCI: [dom 0, bus  2] bus   2, device  4, function  0: vendor 1b21, device 2824, revision 01
PCI:   class_base 06, class_function 04, class_api 00
PCI:   line_size 08, latency 00, header_type 01, BIST 00
PCI:   subsystem_id 0000, subsystem_vendor_id 0040
PCI:   primary_bus 02, secondary_bus 06, subordinate_bus 06, secondary_latency 00
PCI:   I/O window 60080000-6007ffff
PCI:   memory window 70300000-703fffff
PCI:   prefetchable memory window 0000002000000000-0000001fffffffff
PCI:   bridge_control 0003, secondary_status 0000
PCI:   interrupt_line 39, interrupt_pin 01
PCI:   ROM base host 00000000, pci 00000000, size ??
PCI:   base reg 0: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: PM, MSI, PCIe, subvendor
PCI:   Extended capabilities: Advanced Error Reporting, Power Budgeting, Latency Tolerance Reporting, Multicast, Secondary PCIe, Vendor Unique
PCI: [dom 0, bus  6] bus   4, device  0, function  0: vendor 1987, device 5013, revision 01
PCI:   class_base 01, class_function 08, class_api 02
PCI:   line_size 08, latency 00, header_type 00, BIST 00
PCI:   ROM base host 00000000, pci 00000000, size 00000000
PCI:   cardbus_CIS 00000000, subsystem_id 5013, subsystem_vendor_id 1987
PCI:   interrupt_line 39, interrupt_pin 01, min_grant 00, max_latency 00
PCI:   base reg 0: host 70300000, pci 70300000, size 00004000, flags 04
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 2: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 3: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 4: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 5: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: PCIe, MSI-X, MSI, PM
PCI:   Extended capabilities: Latency Tolerance Reporting, L1 Power Management Substates, Advanced Error Reporting, Secondary PCIe
PCI: [dom 0, bus  2] bus   2, device  8, function  0: vendor 1b21, device 2824, revision 01
PCI:   class_base 06, class_function 04, class_api 00
PCI:   line_size 08, latency 00, header_type 01, BIST 00
PCI:   subsystem_id 0000, subsystem_vendor_id 0040
PCI:   primary_bus 02, secondary_bus 07, subordinate_bus 07, secondary_latency 00
PCI:   I/O window 60080000-60080fff
PCI:   memory window 70400000-704fffff
PCI:   prefetchable memory window 0000002000000000-000000200fffffff
PCI:   bridge_control 000b, secondary_status 0000
PCI:   interrupt_line 39, interrupt_pin 01
PCI:   ROM base host 00000000, pci 00000000, size ??
PCI:   base reg 0: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: PM, MSI, PCIe, subvendor
PCI:   Extended capabilities: Advanced Error Reporting, Power Budgeting, Latency Tolerance Reporting, Multicast, Secondary PCIe, Vendor Unique
PCI: [dom 0, bus  7] bus   5, device  0, function  0: vendor 1002, device 683f, revision 87
PCI:   class_base 03, class_function 00, class_api 00
PCI:   line_size 08, latency 00, header_type 80, BIST 00
PCI:   ROM base host 70440000, pci 70440000, size 00020000
PCI:   cardbus_CIS 00000000, subsystem_id 7250, subsystem_vendor_id 1787
PCI:   interrupt_line 39, interrupt_pin 01, min_grant 00, max_latency 00
PCI:   base reg 0: host 00000000, pci 00000000, size 10000000, flags 0c
PCI:   base reg 1: host 00000020, pci 00000020, size 00000000, flags 00
PCI:   base reg 2: host 70400000, pci 70400000, size 00040000, flags 04
PCI:   base reg 3: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 4: host 00000000, pci 60080000, size 00000100, flags 01
PCI:   base reg 5: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: vendspec, PM, PCIe, MSI
PCI:   Extended capabilities: Vendor Unique, Advanced Error Reporting, Resizable Bar, Secondary PCIe
PCI: [dom 0, bus  7] bus   5, device  0, function  1: vendor 1002, device aab0, revision 00
PCI:   class_base 04, class_function 03, class_api 00
PCI:   line_size 08, latency 00, header_type 80, BIST 00
PCI:   ROM base host 00000000, pci 00000000, size 00000000
PCI:   cardbus_CIS 00000000, subsystem_id aab0, subsystem_vendor_id 1787
PCI:   interrupt_line ff, interrupt_pin 02, min_grant 00, max_latency 00
PCI:   base reg 0: host 70460000, pci 70460000, size 00004000, flags 04
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 2: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 3: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 4: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 5: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: vendspec, PM, PCIe, MSI
PCI:   Extended capabilities: Vendor Unique, Advanced Error Reporting
PCI: [dom 0, bus  7] bus   5, device  0, function  2: vendor 1002, device ad18, revision 00
PCI:   class_base 04, class_function 80, class_api 00
PCI:   line_size 08, latency 00, header_type 80, BIST 00
PCI:   ROM base host 00000000, pci 00000000, size 00000000
PCI:   cardbus_CIS 00000000, subsystem_id ad18, subsystem_vendor_id 1787
PCI:   interrupt_line ff, interrupt_pin 03, min_grant 00, max_latency 00
PCI:   base reg 0: host 70464000, pci 70464000, size 00000080, flags 04
PCI:   base reg 1: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 2: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 3: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 4: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   base reg 5: host 00000000, pci 00000000, size 00000000, flags 00
PCI:   Capabilities: vendspec, PM, PCIe, MSI
PCI:   Extended capabilities: Vendor Unique, Advanced Error Reporting

XHCI controller and NVMe disk are recognized, but currently not working properly because of not working PCI interrupts.

usb xhci: failed to get pci x86 module
usb xhci -1: interface version: 0x0100
usb xhci -1: structural parameters: 1:0x04000840 2:0x000000f1 3:0x00000000
usb xhci -1: capability parameters: 0x0200e081
INIT: main: done... begin idle loop on cpu 0
arch_thread_init_kthread_stack(0xffffffc006aab000(xhci event thread))
arch_thread_init_kthread_stack(0xffffffc006aaa500(xhci finish thread))
arch_int_enable_io_interrupt(57)
usb xhci -1: starting XHCI host controller
usb xhci -1: successfully started the controller
module: Search for bus_managers/pci/x86/v1 failed.
usb uhci: failed to get pci x86 module
usb uhci: no devices found
module: Search for bus_managers/pci/x86/v1 failed.
usb ohci: failed to get pci x86 module
usb ohci: no devices found
module: Search for bus_managers/pci/x86/v1 failed.
usb ehci: failed to get pci x86 module
usb ehci: no devices found
arch_thread_init_kthread_stack(0xffffffc006aaaa80(usb explore))
usb hub 2: port 0: new device connected
usb error control pipe 7: timeout waiting for queued request to complete
usb xhci 0: cancel queued transfers (1) for pipe 0xffffffc00096ede8 (0)
usb xhci 0: transfer error on slot 1 endpoint 1: Stopped
usb error xhci 0: TRB 0x81671020 was not found in the endpoint!
usb error xhci 0: failed to get the device descriptor: Operation timed out
usb hub 2: port 0 was warm reset
nvme_disk: attached to NVMe device "SPCC M.2 PCIe SSD (7EF607140B6800005305)"
nvme_disk:      maximum transfer size: 262144
nvme_disk:      qpair count: 8
nvme_disk: timed out waiting for interrupt!

NVMe driver even managed to read something with not working interrupts:

[  0] partition type: 5b193300-fc78-40cd-8002-e86c45580b47
      unique id: caa86a79-eb57-4306-ae66-61ba1975c038
      start block: 34
      end block: 2081
      size: 0.999 MB
      attributes: 0
      name: primary
[  1] partition type: 2e54b353-1271-4842-806f-e436d6af6985
      unique id: 5c2ddb18-ceaa-4389-aeba-6838e33cc54c
      start block: 2082
      end block: 10273
      size: 3.999 MB
      attributes: 0
      name: primary
[  2] partition type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
      unique id: 912a9078-3af3-4e50-8d29-c544030e486e
      start block: 16384
      end block: 282623
      size: 129.999 MB
      attributes: 4
      name: boot
[  3] partition type: 0fc63daf-8483-4772-8e79-3d69d8477de4
      unique id: 2a34702b-93d3-44ff-8129-9c68a8e94119
      start block: 286720
      end block: 249204735
      size: 121541.999 MB
      attributes: 0
      name: root
32 Likes

You know everyone in the Haiku community is cheering you on, right? This is great stuff!

14 Likes

It seems that PCI pin interrupts are not supported and MSI interrupts need to be implemented. Current PCI MSI driver interface is defined as x86-specific. I think that architecture-specific MSI interrupts handling is a bad idea and PCI MSI driver API should be made architecture-independent.

15 Likes

I managed to get interrupts working and now it progress to userland and running launch_daemon, but after that something goes wrong.

Real problem with interrupts was not PCI, it was PLIC (interrupt controller). First PLIC require setting CPU core ID (HART (HARdwate Thread) ID in RISC-V terminology) when working with interrupts. Zero ID was used before because SMP was not used when testing on emulator. HiFive Unmatched never boots from core No. 0 because zero core is a special embedded core with lower performance and machine mode only supported. It is not suitable for running general purpose OS. So actually 5 cores are present: 4 regular cores with ID 1…4 and one embedded core with ID 0.

U-boot pass boot core ID by FDT table (/chosen/boot-hartid). I passed it to kernel args and used for interrupt controller.

That is not all. PLIC can separately handle interrupts from different cores and machine and supervisor mode. Context ID is used to identify interrupt handler target. Usually it is calculated by context = mode + 2*hartId, but not in this case. Special embedded core with ID 0 have no supervisor mode so context IDs become shifted by one. For regular cores formula become context = mode + 2*hartId - 1. I am currently not sure how to detect and handle this in a proper way, shift is currently hardcoded.

After PLIC fixed interrupts started working and USB and NVMe disks are now successful read. Maybe implementing PCI MSI interrupt handling was not required and old interrupt pins are working, but MSI is already implemented and working anyway (with some hacks).

UART log.

17 Likes

Currently I hit #15569.

PMA: bad value for allocate (163792 bytes)
usb error xhci 0: failed to allocate TRBs
PANIC: failed to queue data transfer: Out of memory

Welcome to Kernel Debugging Land...
Thread 627 "launch_daemon" running on CPU 0
Stack:
FP: 0xffffffc00246cbf0
FP: 0xffffffc00246cd00, PC: 0xffffffc00215a875 <kernel_riscv64> arch_debug_call_with_fault_handler + 91
FP: 0xffffffc00246cd50, PC: 0xffffffc0020d24eb <kernel_riscv64> debug_call_with_fault_handler.localalias.7 + 129
FP: 0xffffffc00246cde0, PC: 0xffffffc0020d3b15 <kernel_riscv64> _ZL20kernel_debugger_loopPKcS0_Pvi + 299
FP: 0xffffffc00246ce50, PC: 0xffffffc0020d3e01 <kernel_riscv64> _ZL24kernel_debugger_internalPKcS0_Pvi + 135
FP: 0xffffffc00246ce90, PC: 0xffffffc0020d4149 <kernel_riscv64> panic + 101
FP: 0xffffffc00246cf20, PC: 0xffffffc00243e30b <usb_disk> _Z22usb_disk_transfer_dataP13disk_device_sbPvm.localalias           .12 + 253
FP: 0xffffffc00246cfb0, PC: 0xffffffc00243e7a3 <usb_disk> _Z23usb_disk_operation_bulkP12device_lun_sPhmPvPmbP7err_a           ct.localalias.8 + 505
FP: 0xffffffc00246d010, PC: 0xffffffc00243eb2f <usb_disk> _ZL19usb_disk_block_readP12device_lun_sjtPvPm + 277
FP: 0xffffffc00246d070, PC: 0xffffffc00243ecb5 <usb_disk> _ZL13usb_disk_readPvlS_Pm + 147
FP: 0xffffffc00246d0f0, PC: 0xffffffc0021159eb <kernel_riscv64> _ZL14synchronous_ioP9IORequestR4DoIO + 89
FP: 0xffffffc00246d120, PC: 0xffffffc002124d47 <kernel_riscv64> vfs_synchronous_io + 49
FP: 0xffffffc00246d170, PC: 0xffffffc0020ef979 <kernel_riscv64> _ZL8devfs_ioP9fs_volumeP8fs_vnodePvP9IORequest + 20           5
FP: 0xffffffc00246d1c0, PC: 0xffffffc002124a99 <kernel_riscv64> vfs_vnode_io.localalias.0 + 37
FP: 0xffffffc00246d2c0, PC: 0xffffffc002124bfb <kernel_riscv64> _ZL26do_iterative_fd_io_iteratePvP9IORequestPb + 27           1
FP: 0xffffffc00246d310, PC: 0xffffffc00212503b <kernel_riscv64> do_iterative_fd_io + 193
FP: 0xffffffc00246d360, PC: 0xffffffc002124a99 <kernel_riscv64> vfs_vnode_io.localalias.0 + 37
FP: 0xffffffc00246d3f0, PC: 0xffffffc00208521b <kernel_riscv64> cache_prefetch_vnode.localalias.0 + 483
FP: 0xffffffc00246d5e0, PC: 0xffffffc0021433fd <kernel_riscv64> _ZL12_vm_map_fileiPKcPPvjmjjbilb + 935
FP: 0xffffffc00246d6a0, PC: 0xffffffc0021461fb <kernel_riscv64> _user_map_file + 221
FP: 0xffffffc00246d6e0, PC: 0xffffffc0020a67cd <kernel_riscv64> syscall_dispatcher + 1705
FP: 0xffffffc00246d7d0, PC: 0xffffffc00215bb37 <kernel_riscv64> STrap + 575
FP: 0xffffffc00246d8d0, PC: 0xffffffc002159b0d <kernel_riscv64> SVecU + 109
FP: 0x3df7b039e0, PC: 0x2686252d87 <runtime_loader_seg0ro> 0x15d87
FP: 0x3df7b04ee0, PC: 0x268624a5ef <runtime_loader_seg0ro> 0xd5ef
FP: 0x3df7b04f70, PC: 0x26862484ed <runtime_loader_seg0ro> 0xb4ed
FP: 0x3df7b04fd0, PC: 0x26862488cd <runtime_loader_seg0ro> 0xb8cd
FP: 0x3df7b05000, PC: 0x268624f72d <runtime_loader_seg0ro> 0x1272d
FP: 0xffffffc00246d900, PC: 0xffffffc00215c3a7 <kernel_riscv64> arch_thread_enter_userspace + 145
FP: 0xffffffc00246da30, PC: 0xffffffc0020b01bb <kernel_riscv64> _ZL15enter_userspacePN7BKernel6ThreadEP24UserThread           EntryArguments + 109
FP: 0xffffffc00246da90, PC: 0xffffffc0020b1cfb <kernel_riscv64> thread_enter_userspace_new_team + 57
FP: 0xffffffc00246df80, PC: 0xffffffc0020aa6b5 <kernel_riscv64> _ZL33team_create_thread_start_internalPv + 651
FP: 0xffffffc00246df90, PC: 0xffffffc0020abeff <kernel_riscv64> _ZL24team_create_thread_startPv + 15
FP: 0xffffffc00246dfb0, PC: 0xffffffc0020b4e87 <kernel_riscv64> _ZL19common_thread_entryPv + 57
FP: 0x0, PC: 0xffffffc0021599e5 <kernel_riscv64> arch_thread_entry + 3
kdebug>
6 Likes

After adding some hack to cache prefetch and adding radeon_hd driver to image, it now runs userland and attempts to initialize graphics card, but fails. Something seems wrong with PCI register allocation.

radeon_hd: device_open: open(name = graphics/radeon_hd_050000)
radeon_hd: card(0): radeon_hd_init: called
radeon_hd: radeon_hd_init: card(0): Radeon Cape Verde 1002:683F
radeon_hd: radeon_hd_init: Error: found 0MB video ram, using PCI bar size...
radeon_hd: radeon_hd_init: mapping a frame buffer of 256MB out of 0MB video ram
radeon_hd: card(0): radeon_hd_getbios: called
radeon_hd: radeon_hd_getbios: ACPI ATRM AtomBIOS TODO
radeon_hd: radeon_hd_getbios: AtomBIOS not found using active method 0 at 0x0
radeon_hd: radeon_hd_getbios: No base found at PCI FB BAR
radeon_hd: radeon_hd_getbios: AtomBIOS not found using active method 1 at 0x0
radeon_hd: radeon_hd_getbios: PCI ROM decode enabled
radeon_hd: mapAtomBIOS: seeking AtomBIOS @ 0x70440000 [size: 0x20000]
radeon_hd: mapAtomBIOS: AtomBIOS verified and locked
radeon_hd: radeon_hd_getbios: AtomBIOS found using active method 2 at 0x70440000
radeon_hd: card(0): radeon_hd_init didn't find VESA EDID modes.
radeon_hd: card(0): radeon_hd_init completed successfully!
radeon_hd: card(0): GPU thermal status: 40C
radeon_hd: device_ioctl: accelerant: radeon_hd.accelerant
8 Likes

Subclass 0x80 (for that “mystery” element of the Radeon chipset) is vendor defined. so it is likely to be fine to entirely ignore this mysterious PCI device entry, especially this early in the bring-up.

2 Likes

Video driver progressed a bit. Now it traps because of attempt to write to illegal physical address.

radeon_hd: init_hardware
radeon_hd: init_driver
radeon_hd: init_driver: GPU(0) Radeon HD 7750, revision = 0x87
radeon_hd: publish_devices
radeon_hd: find_device
loaded driver /boot/system/add-ons/kernel/drivers/dev/graphics/radeon_hd
vesa: init_hardware()
radeon_hd: device_open: open(name = graphics/radeon_hd_050000)
radeon_hd: card(0): radeon_hd_init: called
radeon_hd: radeon_hd_init: card(0): Radeon Cape Verde 1002:683F
radeon_hd: radeon_hd_init: Error: found 0MB video ram, using PCI bar size...
radeon_hd: radeon_hd_init: mapping a frame buffer of 256MB out of 0MB video ram
radeon_hd: card(0): radeon_hd_getbios: called
radeon_hd: radeon_hd_getbios: ACPI ATRM AtomBIOS TODO
radeon_hd: radeon_hd_getbios: AtomBIOS not found using active method 0 at 0x0
radeon_hd: radeon_hd_getbios: No base found at PCI FB BAR
radeon_hd: radeon_hd_getbios: AtomBIOS not found using active method 1 at 0x0
radeon_hd: radeon_hd_getbios: PCI ROM decode enabled
radeon_hd: mapAtomBIOS: seeking AtomBIOS @ 0x70440000 [size: 0x20000]
radeon_hd: mapAtomBIOS: AtomBIOS verified and locked
radeon_hd: radeon_hd_getbios: AtomBIOS found using active method 2 at 0x70440000
radeon_hd: card(0): radeon_hd_init didn't find VESA EDID modes.
radeon_hd: card(0): radeon_hd_init completed successfully!
radeon_hd: card(0): GPU thermal status: 41C
radeon_hd: device_ioctl: accelerant: radeon_hd.accelerant
radeon_hd: radeon_init_accelerant enter
radeon_hd: radeon_dump_bios: Dumping AtomBIOS as ATOM_DEBUG is set...
radeon_hd: radeon_dump_bios: AtomBIOS dumped to /boot/system/cache/tmp/radeon_hd_bios_1002_683f_0.bin
radeon_hd: radeon_init_bios: init AtomBIOS for this card as it is not not posted
radeon_hd: atom_op_calltable: table: unknown (80)
Last message repeated 4 times.
radeon_hd: radeon_gpu_probe: table 2.2
radeon_hd: gpio_general_populate: general GPIO @ 0, valid: true, hwPin: 0x1
radeon_hd: gpio_general_populate: general GPIO @ 1, valid: true, hwPin: 0x2
radeon_hd: gpio_general_populate: general GPIO @ 2, valid: true, hwPin: 0x3
radeon_hd: gpio_general_populate: general GPIO @ 3, valid: true, hwPin: 0x4
radeon_hd: gpio_general_populate: general GPIO @ 4, valid: true, hwPin: 0x5
radeon_hd: gpio_general_populate: general GPIO @ 5, valid: true, hwPin: 0x6
radeon_hd: gpio_i2c_populate: i2c GPIO @ 6, valid: true, hwPin: 0x90
radeon_hd: gpio_i2c_populate: i2c GPIO @ 7, valid: true, hwPin: 0x91
radeon_hd: gpio_i2c_populate: i2c GPIO @ 8, valid: true, hwPin: 0x92
radeon_hd: gpio_i2c_populate: i2c GPIO @ 9, valid: true, hwPin: 0x93
radeon_hd: gpio_i2c_populate: i2c GPIO @ 10, valid: true, hwPin: 0x94
radeon_hd: gpio_i2c_populate: i2c GPIO @ 11, valid: true, hwPin: 0x95
radeon_hd: gpio_i2c_populate: i2c GPIO @ 12, valid: true, hwPin: 0x96
radeon_hd: gpio_i2c_populate: i2c GPIO @ 13, valid: true, hwPin: 0x97
radeon_hd: connector_probe: found 3 potential display paths.
radeon_hd: pll_limit_probe: table 2.2
radeon_hd: pll_limit_probe: referenceFreq: 27000; pllOutMin: 600000;  pllOutMax: 1200000; pllInMin: 6750;pllInMax: 27000
radeon_hd: pll_limit_probe: table 2.2
radeon_hd: pll_limit_probe: referenceFreq: 27000; pllOutMin: 600000;  pllOutMax: 1200000; pllInMin: 6750;pllInMax: 27000
radeon_hd: pll_limit_probe: table 2.2
radeon_hd: pll_limit_probe: referenceFreq: 27000; pllOutMin: 600000;  pllOutMax: 1200000; pllInMin: 6750;pllInMax: 27000
radeon_hd: Currently detected connectors=============
radeon_hd: Connector #0)
radeon_hd:  + connector:          HDMI A
radeon_hd:  + i2c gpio table id:  7
radeon_hd:    - gpio hw pin:      0x91
radeon_hd:    - gpio valid:       true
radeon_hd:    - i2c valid:        true
radeon_hd:  + hpd gpio table id:  0
radeon_hd:    - gpio hw pin:      0x1
radeon_hd:    - gpio valid:       true
radeon_hd:  + encoder:            TMDS
radeon_hd:    - id:               30
radeon_hd:    - type:             Internal Kaleidoscope UNIPHY
radeon_hd:    - capabilities:     0x0
radeon_hd:    - enumeration:      1
radeon_hd:    - is bridge:        false
radeon_hd:    + external encoder: none
radeon_hd:  + flags:
radeon_hd:    * device DFP1 support
radeon_hd: Connector #1)
radeon_hd:  + connector:          DVI-D (Digital Only)
radeon_hd:  + i2c gpio table id:  6
radeon_hd:    - gpio hw pin:      0x90
radeon_hd:    - gpio valid:       true
radeon_hd:    - i2c valid:        true
radeon_hd:  + hpd gpio table id:  1
radeon_hd:    - gpio hw pin:      0x2
radeon_hd:    - gpio valid:       true
radeon_hd:  + encoder:            TMDS
radeon_hd:    - id:               30
radeon_hd:    - type:             Internal Kaleidoscope UNIPHY
radeon_hd:    - capabilities:     0x0
radeon_hd:    - enumeration:      2
radeon_hd:    - is bridge:        false
radeon_hd:    + external encoder: none
radeon_hd:  + flags:
radeon_hd:    * device DFP2 support
radeon_hd: Connector #2)
radeon_hd:  + connector:          VGA
radeon_hd:  + i2c gpio table id:  10
radeon_hd:    - gpio hw pin:      0x94
radeon_hd:    - gpio valid:       true
radeon_hd:    - i2c valid:        true
radeon_hd:  + hpd gpio table id:  0
radeon_hd:    - gpio hw pin:      0x1
radeon_hd:    - gpio valid:       true
radeon_hd:  + encoder:            TV DAC
radeon_hd:    - id:               21
radeon_hd:    - type:             Internal Kaleidoscope DAC1
radeon_hd:    - capabilities:     0x0
radeon_hd:    - enumeration:      1
radeon_hd:    - is bridge:        false
radeon_hd:    + external encoder: none
radeon_hd:  + flags:
radeon_hd:    * device CRT1 support
radeon_hd: ==========================================
radeon_hd: encoder_init: called
radeon_hd: transmitter_dig_setup: connector 0, pixelClock: 0
radeon_hd: transmitter_dig_setup: table 1.5
radeon_hd: encoder_pick_dig: connector 0
radeon_hd: transmitter_dig_setup: connector 1, pixelClock: 0
radeon_hd: transmitter_dig_setup: table 1.5
radeon_hd: encoder_pick_dig: connector 1
radeon_hd: pll_set_external: set external pll clock to 600000
radeon_hd: pll_set_external: table 1.6
radeon_hd: dp_setup_connectors
radeon_hd: detect_displays: connector(0): bit-banging ddc for EDID.
DDC: ddc2_read: DDC information read failure
Last message repeated 3 times.
radeon_hd: detect_displays: connector(1): bit-banging ddc for EDID.
radeon_hd: connector_read_edid: found edid monitor on connector #1
radeon_hd: detect_displays: connector(1): found EDID data.
radeon_hd: init_registers, registers for ATI chipset Cape Verde crt #0 loaded
radeon_hd: detect_displays: connector(2): bit-banging ddc for EDID.
DDC: ddc2_read: DDC information read failure
Last message repeated 3 times.
radeon_hd: Currently detected monitors===============
radeon_hd: Display #0 attached = true
radeon_hd:  + connector ID:   1
radeon_hd:  + connector type: DVI-D (Digital Only)
radeon_hd:  + encoder type:   TMDS
radeon_hd:  + limits: Vert Min/Max: 56/75
radeon_hd:  + limits: Horz Min/Max: 30/80
radeon_hd: Display #1 attached = false
radeon_hd: ==========================================
radeon_hd: radeon_gpu_mc_setup: vramStart: 0x0, vramEnd: 0xFFFFFFF
radeon_hd: radeon_gpu_ring_setup called
radeon_hd: RingQueue: Requested 1048576 bytes for GFX RingQueue.
radeon_hd: RingQueue: Allocating 1048576 bytes for GFX RingQueue.
radeon_hd: radeon_gpu_ring_boot called
radeon_hd: radeon_gpu_ring_boot: TODO
radeon_hd: radeon_init_accelerant done
radeon_hd: radeon_get_edid_info
radeon_hd: encoder_output_lock: true
radeon_hd: display_crtc_lock
radeon_hd: encoder_dpms_set: display 0, power: false
radeon_hd: encoder_dpms_set_dig: display 0, power: false
radeon_hd: transmitter_dig_setup: connector 1, pixelClock: 0
radeon_hd: transmitter_dig_setup: table 1.5
radeon_hd: encoder_pick_dig: connector 1
radeon_hd: display_crtc_dpms: crtc 0 dpms powerdown
radeon_hd: display_crtc_blank
radeon_hd: display_crtc_power
radeon_hd: encoder_assign_crtc
radeon_hd: encoder_assign_crtc: table 1.2
radeon_hd: encoder_pick_dig: connector 1
radeon_hd: encoder_crtc_scratch: display 0
radeon_hd: radeon_set_display_mode: pll 0 selected for connector 1
radeon_hd: pll_asic_ss_probe: ss match found
radeon_hd: pll_setup_flags: CRTC: 0, PLL: 0
radeon_hd: pll_adjust: table 1.3
radeon_hd: pll_adjust: was: 64996, now: 64990
radeon_hd: pll_compute_post_divider: vco = 600000
radeon_hd: pll_compute_post_divider: postDiv = 9
radeon_hd: pll_compute: using minimum reference divider
radeon_hd: pll_compute: performing fractional feedback calculations
radeon_hd: pll_compute: Calculated pixel clock of 65000 based on:
radeon_hd: pll_compute:   referenceFrequency: 27000; referenceDivider: 3
radeon_hd: pll_compute:   feedbackDivider: 65; feedbackDividerFrac: 0
radeon_hd: pll_compute:   postDivider: 9
radeon_hd: pll_compute: pixel clock 64990 was changed to 65000
radeon_hd: pll_set: table 1.6
radeon_hd: pll_set: set adjusted pixel clock 65000 (was 64996)
radeon_hd: atom_op_jump: Error: AtomBIOS stuck in loop for more then 5 seconds. (404531 identical jmp op's)
radeon_hd: atom_execute_table_locked: AtomBIOS parser aborted calling operation DELAY_MICROSEC (0x51) @ 0xC2D9
radeon_hd: atom_execute_table: AtomBIOS parser was aborted in table SetPixelClock (0xC)
radeon_hd: display_crtc_ss
radeon_hd: display_crtc_ss: external SS, ignoring SS request
radeon_hd: display_crtc_set_dtd called to do 1024x768
radeon_hd: display_crtc_fb_set: Framebuffer at: 0x0
radeon_hd: display_crtc_fb_set: Set SurfaceAddress High: 0x0
radeon_hd: display_crtc_fb_set: Set SurfaceAddress: 0x0
radeon_hd: display_crtc_fb_set: fb: 1024x768 (32 bpp)
radeon_hd: display_crtc_fb_set: fb pitch: 1024
radeon_hd: display_dce45_crtc_load_lut: crtcID 0
radeon_hd: display_crtc_scale
radeon_hd: encoder_mode_set: display 0
radeon_hd: encoder_dig_setup
radeon_hd: encoder_pick_dig: connector 1
radeon_hd: encoder_dig_setup: table 1.4
radeon_hd: encoder_dig_setup
radeon_hd: encoder_pick_dig: connector 1
radeon_hd: encoder_dig_setup: table 1.4
radeon_hd: encoder_apply_quirks: display 0
radeon_hd: display_crtc_dpms: crtc 0 dpms powerup
radeon_hd: display_crtc_power
radeon_hd: display_crtc_blank
radeon_hd: encoder_dpms_set: display 0, power: true
radeon_hd: encoder_dpms_set_dig: display 0, power: true
radeon_hd: encoder_dig_setup
radeon_hd: encoder_pick_dig: connector 1
radeon_hd: encoder_dig_setup: table 1.4
radeon_hd: encoder_dig_setup
radeon_hd: encoder_pick_dig: connector 1
radeon_hd: encoder_dig_setup: table 1.4
radeon_hd: transmitter_dig_setup: connector 1, pixelClock: 65000
radeon_hd: transmitter_dig_setup: table 1.5
radeon_hd: encoder_pick_dig: connector 1
radeon_hd: display_crtc_lock
radeon_hd: encoder_output_lock: false
radeon_hd: Current DisplayPort Info =================
radeon_hd: Connector #0) DP: false
radeon_hd: Connector #1) DP: false
radeon_hd: Connector #2) DP: false
radeon_hd: ==========================================
radeon_hd: D1CRTC_STATUS        Value: 0x2
radeon_hd: D2CRTC_STATUS        Value: 0x0
radeon_hd: D1CRTC_CONTROL       Value: 0x0
radeon_hd: D2CRTC_CONTROL       Value: 0x0
radeon_hd: D1GRPH_ENABLE        Value: 0x0
radeon_hd: D2GRPH_ENABLE        Value: 0x0
radeon_hd: D1SCL_ENABLE         Value: 0x0
radeon_hd: D2SCL_ENABLE         Value: 0x0
radeon_hd: D1CRTC_BLANK_CONTROL Value: 0x0
radeon_hd: D2CRTC_BLANK_CONTROL Value: 0x0
radeon_hd: radeon_get_frame_buffer_config
radeon_hd: display_crtc_dpms: crtc 0 dpms powerup
radeon_hd: display_crtc_power
radeon_hd: display_crtc_blank
radeon_hd: encoder_dpms_set: display 0, power: true
radeon_hd: encoder_dpms_set_dig: display 0, power: true
radeon_hd: encoder_dig_setup
radeon_hd: encoder_pick_dig: connector 1
radeon_hd: encoder_dig_setup: table 1.4
radeon_hd: encoder_dig_setup
radeon_hd: encoder_pick_dig: connector 1
radeon_hd: encoder_dig_setup: table 1.4
radeon_hd: transmitter_dig_setup: connector 1, pixelClock: 65000
radeon_hd: transmitter_dig_setup: table 1.5
radeon_hd: encoder_pick_dig: connector 1
arch_thread_init_kthread_stack(0xffffffc006aa7e80(create_app_meta_mime (s)))
arch_thread_enter_uspace()
arch_thread_init_kthread_stack(0xffffffc006aa7e80(input_server))
arch_thread_enter_uspace()
STrap(exception storeAccessFault)
  sstatus: (ie: {}, pie: {s}, spp: u, sum: 0)
  sie: {sTimer, sExtern}
  sip: {}
  stval: 0xffffffc12b802000
  tp: 0xffffffc006aa7380(app_server)
PANIC: unhandled STrap
Welcome to Kernel Debugging Land...
Thread 632 "app_server" running on CPU 0
Stack:
FP: 0xffffffc002495400
FP: 0xffffffc002495510, PC: 0xffffffc00215a645 <kernel_riscv64> arch_debug_call_with_fault_handler + 91
FP: 0xffffffc002495560, PC: 0xffffffc0020d22b1 <kernel_riscv64> debug_call_with_fault_handler.localalias.7 + 129
FP: 0xffffffc0024955f0, PC: 0xffffffc0020d38db <kernel_riscv64> _ZL20kernel_debugger_loopPKcS0_Pvi + 299
FP: 0xffffffc002495660, PC: 0xffffffc0020d3bc7 <kernel_riscv64> _ZL24kernel_debugger_internalPKcS0_Pvi + 135
FP: 0xffffffc0024956a0, PC: 0xffffffc0020d3f0f <kernel_riscv64> panic + 101
FP: 0xffffffc0024957d0, PC: 0xffffffc00215b857 <kernel_riscv64> STrap + 399
FP: 0xffffffc0024958d0, PC: 0xffffffc0021598dd <kernel_riscv64> SVecU + 109
FP: 0x3eb9959830, PC: 0x26f907fc87 <app_server_seg0ro> 0xe7c87
FP: 0x3eb9959880, PC: 0x26f908004f <app_server_seg0ro> 0xe804f
FP: 0x3eb99598e0, PC: 0x26f906796d <app_server_seg0ro> 0xcf96d
FP: 0x3eb9959980, PC: 0x26f908164b <app_server_seg0ro> 0xe964b
FP: 0x3eb99599d0, PC: 0x26f907f6c9 <app_server_seg0ro> 0xe76c9
FP: 0x3eb9959a90, PC: 0x26f9079da9 <app_server_seg0ro> 0xe1da9
FP: 0x3eb9959b00, PC: 0x26f9018351 <app_server_seg0ro> 0x80351
FP: 0x3eb9959bb0, PC: 0x26f901bef7 <app_server_seg0ro> 0x83ef7
FP: 0x3eb9959bf0, PC: 0x26f90109f7 <app_server_seg0ro> 0x789f7
FP: 0x3eb9959ca0, PC: 0x26f9010c0f <app_server_seg0ro> 0x78c0f
FP: 0x3eb9959ef0, PC: 0x22bd968b69 <libbe.so_seg0ro> 0x141b69
FP: 0x3eb9959f50, PC: 0x22bd96f919 <libbe.so_seg0ro> 0x148919
FP: 0x3eb9959f70, PC: 0x22bd9660d9 <libbe.so_seg0ro> 0x13f0d9
FP: 0x3eb9959fa0, PC: 0x26f900fec7 <app_server_seg0ro> 0x77ec7
FP: 0x3eb9959fd0, PC: 0x26f9010239 <app_server_seg0ro> 0x78239
FP: 0x3eb995a000, PC: 0x2dca6fe743 <runtime_loader_seg0ro> 0x12743
FP: 0xffffffc002495900, PC: 0xffffffc00215c177 <kernel_riscv64> arch_thread_enter_userspace + 145
FP: 0xffffffc002495a30, PC: 0xffffffc0020aff81 <kernel_riscv64> _ZL15enter_userspacePN7BKernel6ThreadEP24UserThreadEntryArguments + 109
FP: 0xffffffc002495a90, PC: 0xffffffc0020b1ac1 <kernel_riscv64> thread_enter_userspace_new_team + 57
FP: 0xffffffc002495f80, PC: 0xffffffc0020aa47b <kernel_riscv64> _ZL33team_create_thread_start_internalPv + 651
FP: 0xffffffc002495f90, PC: 0xffffffc0020abcc5 <kernel_riscv64> _ZL24team_create_thread_startPv + 15
FP: 0xffffffc002495fb0, PC: 0xffffffc0020b4c4d <kernel_riscv64> _ZL19common_thread_entryPv + 57
FP: 0x0, PC: 0xffffffc0021597b5 <kernel_riscv64> arch_thread_entry + 3
kdebug>

If someone (@kallisti5?) knows how radeon_hd driver works, please tell what is happening.

10 Likes

heh. This is the first time my radeon_hd driver has run on anything except x86 :slight_smile:

Here’s a rundown:

  • AMD cards have something called “atombios”. Essentially there is code that executes from the card itself. atombios has it’s own simple ISA + opcode design.
  • Atombios has a data and function area.
    • data contains important card + state information
    • function is the list of functions (applications?) available to execute on the card and where they live.

The host’s driver executes the atombios functions to do various things on the card in a card-specific way.

I would enable ATOMBIOS tracing. It will give you a LOT of insight into what Atombios is doing down to the opcodes being issued.

https://git.haiku-os.org/haiku/tree/src/add-ons/accelerants/radeon_hd/atombios/atom.cpp#n44

15 Likes