On Sat, Sep 16, 2006 at 01:38:12PM -0700, Robin H. Johnson wrote: > Ok, I picked up some SATA hard drives now, and the AHCI driver DOES see them. > However, it gets more interesting now. > > The board has 4 SATA ports. > > In the BIOS, all 4 of them work, and can start the bootloader from any > of them. > > In the kernel, ONLY the first two ports work. > > The only thing I see on this, is that in my original dmesg, when the DVD > drive was connected to the 4th port, and nothing connected on SATA1-3, > SControl was 300 for 1/2 and 0 for 3/4. I recompiled libata and AHCI using the ATA_DEBUG and ATA_VERBOSE_DEBUG defines, and got an interesting trace. In specific, look at port_idx 2/3, being all zeros in ahci_host_init. I'm digging into it further now, but something makes me suspect that base addresses for ports 3/4 are wrong. Full file at: http://orbis-terrarum.net/~robbat2/x86_64-mmconfig-failure/2.6.18-rc7-git1-libata-ahci-verbose-failure.dmesg Initial portion: libata version 2.00 loaded. ahci_init_one: ENTER ahci 0000:00:1f.2: version 2.0 ACPI: PCI Interrupt 0000:00:1f.2[A] -> GSI 19 (level, low) -> IRQ 193 ahci_host_init: cap 0xe320ffc3 port_map 0x33 n_ports 4 ahci_host_init: mmio ffffc20000018000 port_mmio ffffc20000018100 ahci_setup_port: ENTER, base==0xffffc20000018000, port_idx 0 ahci_setup_port: base now==0xffffc20000018100 ahci_setup_port: EXIT ahci_host_init: PORT_CMD 0x6 ahci_host_init: PORT_SCR_ERR 0x4050000 ahci_host_init: PORT_IRQ_STAT 0x0 ahci_host_init: mmio ffffc20000018000 port_mmio ffffc20000018180 ahci_setup_port: ENTER, base==0xffffc20000018000, port_idx 1 ahci_setup_port: base now==0xffffc20000018180 ahci_setup_port: EXIT ahci_host_init: PORT_CMD 0x6 ahci_host_init: PORT_SCR_ERR 0x4050000 ahci_host_init: PORT_IRQ_STAT 0x0 ahci_host_init: mmio ffffc20000018000 port_mmio ffffc20000018200 ahci_setup_port: ENTER, base==0xffffc20000018000, port_idx 2 ahci_setup_port: base now==0xffffc20000018200 ahci_setup_port: EXIT ahci_host_init: PORT_CMD 0x0 ahci_host_init: PORT_SCR_ERR 0x0 ahci_host_init: PORT_IRQ_STAT 0x0 ahci_host_init: mmio ffffc20000018000 port_mmio ffffc20000018280 ahci_setup_port: ENTER, base==0xffffc20000018000, port_idx 3 ahci_setup_port: base now==0xffffc20000018280 ahci_setup_port: EXIT ahci_host_init: PORT_CMD 0x0 ahci_host_init: PORT_SCR_ERR 0x0 ahci_host_init: PORT_IRQ_STAT 0x0 ahci_host_init: HOST_CTL 0x80000000 ahci_host_init: HOST_CTL 0x80000002 PCI: Setting latency timer of device 0000:00:1f.2 to 64 ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 4 ports 3 Gbps 0x33 impl SATA mode ahci 0000:00:1f.2: flags: 64bit ncq led clo pio slum part -- Robin Hugh Johnson E-Mail : [email protected] GnuPG FP : 11AC BA4F 4778 E3F6 E4ED F38E B27B 944E 3488 4E85
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