[tip:x86/mrst] x86, olpc: Use pci subarch init for OLPC
From: tip-bot for Thomas Gleixner
Date: Thu Feb 25 2010 - 23:46:26 EST
Commit-ID: d5d0e88c1e5b069aadb050ff6ec95df312de876a
Gitweb: http://git.kernel.org/tip/d5d0e88c1e5b069aadb050ff6ec95df312de876a
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Mon, 22 Feb 2010 05:42:04 -0800
Committer: H. Peter Anvin <hpa@xxxxxxxxx>
CommitDate: Thu, 25 Feb 2010 19:26:23 -0800
x86, olpc: Use pci subarch init for OLPC
Replace the #ifdef'ed OLPC-specific init functions by a conditional
x86_init function. If the function returns 0 we leave pci_arch_init,
otherwise we continue.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Cc: Andres Salomon <dilinger@xxxxxxxxxxxxxxx>
LKML-Reference: <43F901BD926A4E43B106BF17856F0755A318CE89@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Jacob Pan <jacob.jun.pan@xxxxxxxxx>
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx>
---
arch/x86/include/asm/olpc.h | 20 ++------------------
arch/x86/include/asm/pci_x86.h | 1 -
arch/x86/kernel/olpc.c | 10 +++++++---
arch/x86/pci/init.c | 8 ++++----
arch/x86/pci/olpc.c | 3 ---
5 files changed, 13 insertions(+), 29 deletions(-)
diff --git a/arch/x86/include/asm/olpc.h b/arch/x86/include/asm/olpc.h
index 3a57385..101229b 100644
--- a/arch/x86/include/asm/olpc.h
+++ b/arch/x86/include/asm/olpc.h
@@ -13,7 +13,6 @@ struct olpc_platform_t {
#define OLPC_F_PRESENT 0x01
#define OLPC_F_DCON 0x02
-#define OLPC_F_VSA 0x04
#ifdef CONFIG_OLPC
@@ -51,18 +50,6 @@ static inline int olpc_has_dcon(void)
}
/*
- * The VSA is software from AMD that typical Geode bioses will include.
- * It is used to emulate the PCI bus, VGA, etc. OLPC's Open Firmware does
- * not include the VSA; instead, PCI is emulated by the kernel.
- *
- * The VSA is described further in arch/x86/pci/olpc.c.
- */
-static inline int olpc_has_vsa(void)
-{
- return (olpc_platform_info.flags & OLPC_F_VSA) ? 1 : 0;
-}
-
-/*
* The "Mass Production" version of OLPC's XO is identified as being model
* C2. During the prototype phase, the following models (in chronological
* order) were created: A1, B1, B2, B3, B4, C1. The A1 through B2 models
@@ -87,13 +74,10 @@ static inline int olpc_has_dcon(void)
return 0;
}
-static inline int olpc_has_vsa(void)
-{
- return 0;
-}
-
#endif
+extern int pci_olpc_init(void);
+
/* EC related functions */
extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen,
diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h
index 6e69edf..3608551 100644
--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -104,7 +104,6 @@ extern bool port_cf9_safe;
extern int pci_direct_probe(void);
extern void pci_direct_init(int type);
extern void pci_pcbios_init(void);
-extern int pci_olpc_init(void);
extern void __init dmi_check_pciprobe(void);
extern void __init dmi_check_skip_isa_align(void);
diff --git a/arch/x86/kernel/olpc.c b/arch/x86/kernel/olpc.c
index 9d1d263..8297160 100644
--- a/arch/x86/kernel/olpc.c
+++ b/arch/x86/kernel/olpc.c
@@ -17,7 +17,9 @@
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/string.h>
+
#include <asm/geode.h>
+#include <asm/setup.h>
#include <asm/olpc.h>
#ifdef CONFIG_OPEN_FIRMWARE
@@ -243,9 +245,11 @@ static int __init olpc_init(void)
olpc_ec_cmd(EC_FIRMWARE_REV, NULL, 0,
(unsigned char *) &olpc_platform_info.ecver, 1);
- /* check to see if the VSA exists */
- if (cs5535_has_vsa2())
- olpc_platform_info.flags |= OLPC_F_VSA;
+#ifdef CONFIG_PCI_OLPC
+ /* If the VSA exists let it emulate PCI, if not emulate in kernel */
+ if (!cs5535_has_vsa2())
+ x86_init.pci.arch_init = pci_olpc_init;
+#endif
printk(KERN_INFO "OLPC board revision %s%X (EC=%x)\n",
((olpc_platform_info.boardrev & 0xf) < 8) ? "pre" : "",
diff --git a/arch/x86/pci/init.c b/arch/x86/pci/init.c
index 25a1f8e..adb62aa 100644
--- a/arch/x86/pci/init.c
+++ b/arch/x86/pci/init.c
@@ -1,6 +1,7 @@
#include <linux/pci.h>
#include <linux/init.h>
#include <asm/pci_x86.h>
+#include <asm/x86_init.h>
/* arch_initcall has too random ordering, so call the initializers
in the right sequence from here. */
@@ -15,10 +16,9 @@ static __init int pci_arch_init(void)
if (!(pci_probe & PCI_PROBE_NOEARLY))
pci_mmcfg_early_init();
-#ifdef CONFIG_PCI_OLPC
- if (!pci_olpc_init())
- return 0; /* skip additional checks if it's an XO */
-#endif
+ if (x86_init.pci.arch_init && !x86_init.pci.arch_init())
+ return 0;
+
#ifdef CONFIG_PCI_BIOS
pci_pcbios_init();
#endif
diff --git a/arch/x86/pci/olpc.c b/arch/x86/pci/olpc.c
index b889d82..b348154 100644
--- a/arch/x86/pci/olpc.c
+++ b/arch/x86/pci/olpc.c
@@ -304,9 +304,6 @@ static struct pci_raw_ops pci_olpc_conf = {
int __init pci_olpc_init(void)
{
- if (!machine_is_olpc() || olpc_has_vsa())
- return -ENODEV;
-
printk(KERN_INFO "PCI: Using configuration type OLPC\n");
raw_pci_ops = &pci_olpc_conf;
is_lx = is_geode_lx();
--
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