Hi, All I'm using linux 2.6.10 on a board with MPC8280 and I have a problem with the PCI init. After allocating resource for the bus (pcibios_allocate_bus_resource() in pcibios_init() ), the following pcibios_allocate_resource(0) and (1) fails, like it's possible to see from the following report.
Jan 1 00:16:52 (none) daemon.info klogd: PCI: Probing PCI hardware Jan 1 00:16:52 (none) daemon.warn klogd: PCI: bridge rsrc 70000000..74000000 (101), parent c01ef158 Jan 1 00:16:52 (none) daemon.warn klogd: PCI: bridge rsrc 40000000..4fffffff (1200), parent c01ef174 Jan 1 00:16:52 (none) daemon.warn klogd: PCI: bridge rsrc 60000000..6fffffff (200), parent c01ef174 Jan 1 00:16:52 (none) daemon.warn klogd: PCI: pcibios_allocate_resources() - pass=0 Jan 1 00:16:52 (none) daemon.warn klogd: devfn=0x0 - command=0x6 Jan 1 00:16:52 (none) daemon.warn klogd: idx=0 - disabled=0x0 Jan 1 00:16:52 (none) daemon.warn klogd: PCI:0000:00:00.0: Resource 0: 00000000-0001ffff (f=200) Jan 1 00:16:52 (none) daemon.err klogd: PCI: Cannot allocate resource region 0 of device 0000:00:00.0 Jan 1 00:16:52 (none) daemon.warn klogd: PCI: parent is c0283070: 60000000-6fffffff (f=200) Jan 1 00:16:52 (none) daemon.warn klogd: idx=1 - disabled=0x0 Jan 1 00:16:52 (none) daemon.warn klogd: PCI:0000:00:00.0: Resource 1: 00000000-03ffffff (f=1208) Jan 1 00:16:52 (none) daemon.err klogd: PCI: Cannot allocate resource region 1 of device 0000:00:00.0 Jan 1 00:16:52 (none) daemon.warn klogd: PCI: parent is c0283054: 40000000-4fffffff (f=1200) Jan 1 00:16:52 (none) daemon.warn klogd: PCI: pcibios_allocate_resources() - pass=1 Jan 1 00:16:52 (none) daemon.warn klogd: devfn=0x0 - command=0x6 It's possible it will be a errata configurazione of bridge ??? The define for configuring the PCI (inbound/outbound windows) into my board platform include file are /* BR0 - allow the CPU to access PCI address space */ #define MPC826x_PCI_BASE 0x40000000 #define MPC826x_PCI_MASK 0xc0000000 /* OUTBOUND 0 - Master window that allows the CPU to access PCI Memory (prefetch). */ #define MPC826x_PCI_LOWER_MEM 0x40000000 #define MPC826x_PCI_UPPER_MEM 0x4fffffff #define MPC826x_PCI_MEM_OFFSET 0x00000000 /* OUTBOUND 1 - allows the CPU to access PCI Memory (non-prefetch) */ #define MPC826x_PCI_LOWER_MMIO 0x60000000 #define MPC826x_PCI_UPPER_MMIO 0x6fffffff #define MPC826x_PCI_MMIO_OFFSET 0x00000000 /* OUTBOUND 2 -0 allows the CPU to access PCI IO space */ #define MPC826x_PCI_LOWER_IO 0x70000000 #define MPC826x_PCI_UPPER_IO 0x74000000 #define MPC826x_PCI_IO_BASE MPC826x_PCI_LOWER_IO #define MPC826x_PCI_IO_SIZE (MPC826x_PCI_UPPER_IO-MPC826x_PCI_LOWER_IO) /* INBOUND 0 - PCI Memory map */ #define MPC826x_PCI_SLAVE_MEM_LOCAL (((struct bd_info *)__res)->bi_memstart) #define MPC826x_PCI_SLAVE_MEM_BUS (((struct bd_info *)__res)->bi_memstart) #define MPC826x_PCI_SLAVE_MEM_SIZE (((struct bd_info *)__res)->bi_memsize) and are the same value used in u-boot, where all is ok and the pci run properly. Shuld be defined something other ??? Best regards. Enzo Figini PS - with this define about OUTBOUND 2 is not possible insert module, with problem of vmalloc reported. -------------- next part -------------- A non-text attachment was scrubbed... Name: winmail.dat Type: application/ms-tnef Size: 872 bytes Desc: not available Url : http://ozlabs.org/pipermail/linuxppc-embedded/attachments/20050127/5b066cd3/attachment.bin
