PCI allocation problem

["Figini Enzo" <enzo.figini@italtel.it>]

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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.

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