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authorYinghai Lu <yinghai@kernel.org>2010-08-09 17:18:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-09 20:44:53 -0700
commitd9e1b6c45059ccfff647a120769ae86da78dfdc4 (patch)
treefb88b38cd37a47419edfcc0cf55b0f25c05cbe1f /drivers/char
parente5149cc44cf9c5e23fbe34515fc6b4b91c0e48c4 (diff)
ipmi: fix ACPI detection with regspacing
After the commit that changed ipmi_si detecting sequence from SMBIOS/ACPI to ACPI/SMBIOS, | commit 754d453185275951d39792865927ec494fa1ebd8 | Author: Matthew Garrett <mjg@redhat.com> | Date: Wed May 26 14:43:47 2010 -0700 | | ipmi: change device discovery order | | The ipmi spec provides an ordering for si discovery. Change the driver to | match, with the exception of preferring smbios to SPMI as HPs (at least) | contain accurate information in the former but not the latter. ipmi_si can not be initialized. [ 138.799739] calling init_ipmi_devintf+0x0/0x109 @ 1 [ 138.805050] ipmi device interface [ 138.818131] initcall init_ipmi_devintf+0x0/0x109 returned 0 after 12797 usecs [ 138.822998] calling init_ipmi_si+0x0/0xa90 @ 1 [ 138.840276] IPMI System Interface driver. [ 138.846137] ipmi_si: probing via ACPI [ 138.849225] ipmi_si 00:09: [io 0x0ca2] regsize 1 spacing 1 irq 0 [ 138.864438] ipmi_si: Adding ACPI-specified kcs state machine [ 138.870893] ipmi_si: probing via SMBIOS [ 138.880945] ipmi_si: Adding SMBIOS-specified kcs state machineipmi_si: duplicate interface [ 138.896511] ipmi_si: probing via SPMI [ 138.899861] ipmi_si: Adding SPMI-specified kcs state machineipmi_si: duplicate interface [ 138.917095] ipmi_si: Trying ACPI-specified kcs state machine at i/o address 0xca2, slave address 0x0, irq 0 [ 138.928658] ipmi_si: Interface detection failed [ 138.953411] initcall init_ipmi_si+0x0/0xa90 returned 0 after 110847 usecs in smbios has DMI/SMBIOS Handle 0x00C5, DMI type 38, 18 bytes IPMI Device Information Interface Type: KCS (Keyboard Control Style) Specification Version: 2.0 I2C Slave Address: 0x00 NV Storage Device: Not Present Base Address: 0x0000000000000CA2 (I/O) Register Spacing: 32-bit Boundaries in DSDT has Device (BMC) { Name (_HID, EisaId ("IPI0001")) Method (_STA, 0, NotSerialized) { If (LEqual (OSN, Zero)) { Return (Zero) } Return (0x0F) } Name (_STR, Unicode ("IPMI_KCS")) Name (_UID, Zero) Name (_CRS, ResourceTemplate () { IO (Decode16, 0x0CA2, // Range Minimum 0x0CA2, // Range Maximum 0x00, // Alignment 0x01, // Length ) IO (Decode16, 0x0CA6, // Range Minimum 0x0CA6, // Range Maximum 0x00, // Alignment 0x01, // Length ) }) Method (_IFT, 0, NotSerialized) { Return (One) } Method (_SRV, 0, NotSerialized) { Return (0x0200) } } so the reg spacing should be 4 instead of 1. Try to calculate regspacing for this kind of system. Observed on a Sun Fire X4800. Other OSes work and pass certification. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Matthew Garrett <mjg@redhat.com> Cc: Len Brown <len.brown@intel.com> Cc: Myron Stowe <myron.stowe@hp.com> Cc: Corey Minyard <minyard@acm.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/ipmi/ipmi_si_intf.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 094bdc355b1..ff68e7c34ce 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -2176,6 +2176,14 @@ static int __devinit ipmi_pnp_probe(struct pnp_dev *dev,
info->io.addr_data = res->start;
info->io.regspacing = DEFAULT_REGSPACING;
+ res = pnp_get_resource(dev,
+ (info->io.addr_type == IPMI_IO_ADDR_SPACE) ?
+ IORESOURCE_IO : IORESOURCE_MEM,
+ 1);
+ if (res) {
+ if (res->start > info->io.addr_data)
+ info->io.regspacing = res->start - info->io.addr_data;
+ }
info->io.regsize = DEFAULT_REGSPACING;
info->io.regshift = 0;