[GIT PULL] x86/platform changes for v3.5

From: Ingo Molnar
Date: Wed May 23 2012 - 04:49:29 EST

Linus,

Please pull the latest x86-platform-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-platform-for-linus

HEAD: ead91d4b8c3b1fb08a73aaa4a191230ecf717ee0 x86/vsmp: Fix number of CPUs when vsmp is disabled

This tree includes assorted platform driver updates and a
preparatory series for a platform with custom DMA remapping
semantics (sta2x11 I/O hub).

out-of-topic modifications in x86-platform-for-linus:
-----------------------------------------------------
arch/parisc/include/asm/kbdleds.h # b2d0b7a: keyboard: Use BIOS Keyboard varia
drivers/tty/vt/keyboard.c # b2d0b7a: keyboard: Use BIOS Keyboard varia
include/linux/cs5535.h # c2c21e9: x86/olpc/xo1/sci: Report RTC wake

Thanks,

Ingo

------------------>
Alessandro Rubini (3):
x86-32: Introduce CONFIG_X86_DEV_DMA_OPS
x86: Introduce CONFIG_X86_DMA_REMAP
x86, platform: Initial support for sta2x11 I/O hub

Daniel Drake (2):
x86/olpc/xo1/sci: Produce wakeup events for buttons and switches
x86/olpc/xo1/sci: Report RTC wakeup events

Joshua Cov (1):
keyboard: Use BIOS Keyboard variable to set Numlock

Shai Fultheim (1):
x86/vsmp: Fix number of CPUs when vsmp is disabled


arch/parisc/include/asm/kbdleds.h | 19 ++
arch/x86/Kconfig | 35 +++-
arch/x86/boot/main.c | 18 +-
arch/x86/include/asm/bootparam.h | 3 +-
arch/x86/include/asm/device.h | 4 +-
arch/x86/include/asm/dma-mapping.h | 9 +-
arch/x86/include/asm/kbdleds.h | 17 ++
arch/x86/kernel/vsmp_64.c | 40 ++++
arch/x86/pci/Makefile | 2 +
arch/x86/pci/sta2x11-fixup.c | 366 ++++++++++++++++++++++++++++++++++
arch/x86/platform/olpc/olpc-xo1-sci.c | 43 +++-
drivers/tty/vt/keyboard.c | 20 +-
include/linux/cs5535.h | 1 +
13 files changed, 544 insertions(+), 33 deletions(-)
create mode 100644 arch/parisc/include/asm/kbdleds.h
create mode 100644 arch/x86/include/asm/kbdleds.h
create mode 100644 arch/x86/pci/sta2x11-fixup.c

diff --git a/arch/parisc/include/asm/kbdleds.h b/arch/parisc/include/asm/kbdleds.h
new file mode 100644
index 0000000..2e2e75a
--- /dev/null
+++ b/arch/parisc/include/asm/kbdleds.h
@@ -0,0 +1,19 @@
+#ifndef _ASM_PARISC_KBDLEDS_H
+#define _ASM_PARISC_KBDLEDS_H
+
+/*
+ * On HIL keyboards of PARISC machines there is no NumLock key and
+ * everyone expects the keypad to be used for numbers. That's why
+ * we can safely turn on the NUMLOCK bit.
+ */
+
+static inline int kbd_defleds(void)
+{
+#if defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD)
+ return 1 << VC_NUMLOCK;
+#else
+ return 0;
+#endif
+}
+
+#endif /* _ASM_PARISC_KBDLEDS_H */
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 1d14cc6..d2599a0 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -12,6 +12,7 @@ config X86_32

config X86_64
def_bool 64BIT
+ select X86_DEV_DMA_OPS

### Arch settings
config X86
@@ -328,6 +329,7 @@ config X86_EXTENDED_PLATFORM
NUMAQ (IBM/Sequent)
RDC R-321x SoC
SGI 320/540 (Visual Workstation)
+ STA2X11-based (e.g. Northville)
Summit/EXA (IBM x440)
Unisys ES7000 IA32 series
Moorestown MID devices
@@ -374,6 +376,7 @@ config X86_VSMP
select PARAVIRT
depends on X86_64 && PCI
depends on X86_EXTENDED_PLATFORM
+ depends on SMP
---help---
Support for ScaleMP vSMP systems. Say 'Y' here if this kernel is
supposed to run on these EM64T-based machines. Only choose this option
@@ -460,10 +463,10 @@ config X86_32_NON_STANDARD
depends on X86_32 && SMP
depends on X86_EXTENDED_PLATFORM
---help---
- This option compiles in the NUMAQ, Summit, bigsmp, ES7000, default
- subarchitectures. It is intended for a generic binary kernel.
- if you select them all, kernel will probe it one by one. and will
- fallback to default.
+ This option compiles in the NUMAQ, Summit, bigsmp, ES7000,
+ STA2X11, default subarchitectures. It is intended for a generic
+ binary kernel. If you select them all, kernel will probe it
+ one by one and will fallback to default.

# Alphabetically sorted list of Non standard 32 bit platforms

@@ -503,6 +506,22 @@ config X86_VISWS
A kernel compiled for the Visual Workstation will run on general
PCs as well. See <file:Documentation/sgi-visws.txt> for details.

+config STA2X11
+ bool "STA2X11 Companion Chip Support"
+ depends on X86_32_NON_STANDARD && PCI
+ select X86_DEV_DMA_OPS
+ select X86_DMA_REMAP
+ select SWIOTLB
+ select MFD_STA2X11
+ select ARCH_REQUIRE_GPIOLIB
+ default n
+ ---help---
+ This adds support for boards based on the STA2X11 IO-Hub,
+ a.k.a. "ConneXt". The chip is used in place of the standard
+ PC chipset, so all "standard" peripherals are missing. If this
+ option is selected the kernel will still be able to boot on
+ standard PC machines.
+
config X86_SUMMIT
bool "Summit/EXA (IBM x440)"
depends on X86_32_NON_STANDARD
@@ -2215,6 +2234,14 @@ config HAVE_TEXT_POKE_SMP
bool
select STOP_MACHINE if SMP

+config X86_DEV_DMA_OPS
+ bool
+ depends on X86_64 || STA2X11
+
+config X86_DMA_REMAP
+ bool
+ depends on STA2X11
+
source "net/Kconfig"

source "drivers/Kconfig"
diff --git a/arch/x86/boot/main.c b/arch/x86/boot/main.c
index 40358c8..cf6083d 100644
--- a/arch/x86/boot/main.c
+++ b/arch/x86/boot/main.c
@@ -57,14 +57,20 @@ static void copy_boot_params(void)
}

/*
- * Set the keyboard repeat rate to maximum. Unclear why this
+ * Query the keyboard lock status as given by the BIOS, and
+ * set the keyboard repeat rate to maximum. Unclear why the latter
* is done here; this might be possible to kill off as stale code.
*/
-static void keyboard_set_repeat(void)
+static void keyboard_init(void)
{
- struct biosregs ireg;
+ struct biosregs ireg, oreg;
initregs(&ireg);
- ireg.ax = 0x0305;
+
+ ireg.ah = 0x02; /* Get keyboard status */
+ intcall(0x16, &ireg, &oreg);
+ boot_params.kbd_status = oreg.al;
+
+ ireg.ax = 0x0305; /* Set keyboard repeat rate */
intcall(0x16, &ireg, NULL);
}

@@ -151,8 +157,8 @@ void main(void)
/* Detect memory layout */
detect_memory();

- /* Set keyboard repeat rate (why?) */
- keyboard_set_repeat();
+ /* Set keyboard repeat rate (why?) and query the lock flags */
+ keyboard_init();

/* Query MCA information */
query_mca();
diff --git a/arch/x86/include/asm/bootparam.h b/arch/x86/include/asm/bootparam.h
index 2f90c51..eb45aa6 100644
--- a/arch/x86/include/asm/bootparam.h
+++ b/arch/x86/include/asm/bootparam.h
@@ -112,7 +112,8 @@ struct boot_params {
__u8 e820_entries; /* 0x1e8 */
__u8 eddbuf_entries; /* 0x1e9 */
__u8 edd_mbr_sig_buf_entries; /* 0x1ea */
- __u8 _pad6[6]; /* 0x1eb */
+ __u8 kbd_status; /* 0x1eb */
+ __u8 _pad6[5]; /* 0x1ec */
struct setup_header hdr; /* setup header */ /* 0x1f1 */
__u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
__u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
diff --git a/arch/x86/include/asm/device.h b/arch/x86/include/asm/device.h
index 63a2a03..93e1c55 100644
--- a/arch/x86/include/asm/device.h
+++ b/arch/x86/include/asm/device.h
@@ -5,8 +5,8 @@ struct dev_archdata {
#ifdef CONFIG_ACPI
void *acpi_handle;
#endif
-#ifdef CONFIG_X86_64
-struct dma_map_ops *dma_ops;
+#ifdef CONFIG_X86_DEV_DMA_OPS
+ struct dma_map_ops *dma_ops;
#endif
#if defined(CONFIG_INTEL_IOMMU) || defined(CONFIG_AMD_IOMMU)
void *iommu; /* hook for IOMMU specific extension */
diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index 4b4331d..61c0bd2 100644
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -30,7 +30,7 @@ extern struct dma_map_ops *dma_ops;

static inline struct dma_map_ops *get_dma_ops(struct device *dev)
{
-#ifdef CONFIG_X86_32
+#ifndef CONFIG_X86_DEV_DMA_OPS
return dma_ops;
#else
if (unlikely(!dev) || !dev->archdata.dma_ops)
@@ -62,6 +62,12 @@ extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag,
struct dma_attrs *attrs);

+#ifdef CONFIG_X86_DMA_REMAP /* Platform code defines bridge-specific code */
+extern bool dma_capable(struct device *dev, dma_addr_t addr, size_t size);
+extern dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr);
+extern phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr);
+#else
+
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
if (!dev->dma_mask)
@@ -79,6 +85,7 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
{
return daddr;
}
+#endif /* CONFIG_X86_DMA_REMAP */

static inline void
dma_cache_sync(struct device *dev, void *vaddr, size_t size,
diff --git a/arch/x86/include/asm/kbdleds.h b/arch/x86/include/asm/kbdleds.h
new file mode 100644
index 0000000..f27ac5f
--- /dev/null
+++ b/arch/x86/include/asm/kbdleds.h
@@ -0,0 +1,17 @@
+#ifndef _ASM_X86_KBDLEDS_H
+#define _ASM_X86_KBDLEDS_H
+
+/*
+ * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on.
+ * This seems a good reason to start with NumLock off. That's why on X86 we
+ * ask the bios for the correct state.
+ */
+
+#include <asm/setup.h>
+
+static inline int kbd_defleds(void)
+{
+ return boot_params.kbd_status & 0x20 ? (1 << VC_NUMLOCK) : 0;
+}
+
+#endif /* _ASM_X86_KBDLEDS_H */
diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c
index a1d804b..8eeb55a 100644
--- a/arch/x86/kernel/vsmp_64.c
+++ b/arch/x86/kernel/vsmp_64.c
@@ -15,6 +15,7 @@
#include <linux/init.h>
#include <linux/pci_ids.h>
#include <linux/pci_regs.h>
+#include <linux/smp.h>

#include <asm/apic.h>
#include <asm/pci-direct.h>
@@ -22,6 +23,8 @@
#include <asm/paravirt.h>
#include <asm/setup.h>

+#define TOPOLOGY_REGISTER_OFFSET 0x10
+
#if defined CONFIG_PCI && defined CONFIG_PARAVIRT
/*
* Interrupt control on vSMPowered systems:
@@ -149,12 +152,49 @@ int is_vsmp_box(void)
return 0;
}
#endif
+
+static void __init vsmp_cap_cpus(void)
+{
+#if !defined(CONFIG_X86_VSMP) && defined(CONFIG_SMP)
+ void __iomem *address;
+ unsigned int cfg, topology, node_shift, maxcpus;
+
+ /*
+ * CONFIG_X86_VSMP is not configured, so limit the number CPUs to the
+ * ones present in the first board, unless explicitly overridden by
+ * setup_max_cpus
+ */
+ if (setup_max_cpus != NR_CPUS)
+ return;
+
+ /* Read the vSMP Foundation topology register */
+ cfg = read_pci_config(0, 0x1f, 0, PCI_BASE_ADDRESS_0);
+ address = early_ioremap(cfg + TOPOLOGY_REGISTER_OFFSET, 4);
+ if (WARN_ON(!address))
+ return;
+
+ topology = readl(address);
+ node_shift = (topology >> 16) & 0x7;
+ if (!node_shift)
+ /* The value 0 should be decoded as 8 */
+ node_shift = 8;
+ maxcpus = (topology & ((1 << node_shift) - 1)) + 1;
+
+ pr_info("vSMP CTL: Capping CPUs to %d (CONFIG_X86_VSMP is unset)\n",
+ maxcpus);
+ setup_max_cpus = maxcpus;
+ early_iounmap(address, 4);
+#endif
+}
+
void __init vsmp_init(void)
{
detect_vsmp_box();
if (!is_vsmp_box())
return;

+ vsmp_cap_cpus();
+
set_vsmp_pv_ops();
return;
}
diff --git a/arch/x86/pci/Makefile b/arch/x86/pci/Makefile
index e76e18c..3af5a1e 100644
--- a/arch/x86/pci/Makefile
+++ b/arch/x86/pci/Makefile
@@ -11,6 +11,8 @@ obj-$(CONFIG_X86_INTEL_CE) += ce4100.o
obj-$(CONFIG_ACPI) += acpi.o
obj-y += legacy.o irq.o

+obj-$(CONFIG_STA2X11) += sta2x11-fixup.o
+
obj-$(CONFIG_X86_VISWS) += visws.o

obj-$(CONFIG_X86_NUMAQ) += numaq_32.o
diff --git a/arch/x86/pci/sta2x11-fixup.c b/arch/x86/pci/sta2x11-fixup.c
new file mode 100644
index 0000000..9d8a509
--- /dev/null
+++ b/arch/x86/pci/sta2x11-fixup.c
@@ -0,0 +1,366 @@
+/*
+ * arch/x86/pci/sta2x11-fixup.c
+ * glue code for lib/swiotlb.c and DMA translation between STA2x11
+ * AMBA memory mapping and the X86 memory mapping
+ *
+ * ST Microelectronics ConneXt (STA2X11/STA2X10)
+ *
+ * Copyright (c) 2010-2011 Wind River Systems, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/export.h>
+#include <linux/list.h>
+
+#define STA2X11_SWIOTLB_SIZE (4*1024*1024)
+extern int swiotlb_late_init_with_default_size(size_t default_size);
+
+/*
+ * We build a list of bus numbers that are under the ConneXt. The
+ * main bridge hosts 4 busses, which are the 4 endpoints, in order.
+ */
+#define STA2X11_NR_EP 4 /* 0..3 included */
+#define STA2X11_NR_FUNCS 8 /* 0..7 included */
+#define STA2X11_AMBA_SIZE (512 << 20)
+
+struct sta2x11_ahb_regs { /* saved during suspend */
+ u32 base, pexlbase, pexhbase, crw;
+};
+
+struct sta2x11_mapping {
+ u32 amba_base;
+ int is_suspended;
+ struct sta2x11_ahb_regs regs[STA2X11_NR_FUNCS];
+};
+
+struct sta2x11_instance {
+ struct list_head list;
+ int bus0;
+ struct sta2x11_mapping map[STA2X11_NR_EP];
+};
+
+static LIST_HEAD(sta2x11_instance_list);
+
+/* At probe time, record new instances of this bridge (likely one only) */
+static void sta2x11_new_instance(struct pci_dev *pdev)
+{
+ struct sta2x11_instance *instance;
+
+ instance = kzalloc(sizeof(*instance), GFP_ATOMIC);
+ if (!instance)
+ return;
+ /* This has a subordinate bridge, with 4 more-subordinate ones */
+ instance->bus0 = pdev->subordinate->number + 1;
+
+ if (list_empty(&sta2x11_instance_list)) {
+ int size = STA2X11_SWIOTLB_SIZE;
+ /* First instance: register your own swiotlb area */
+ dev_info(&pdev->dev, "Using SWIOTLB (size %i)\n", size);
+ if (swiotlb_late_init_with_default_size(size))
+ dev_emerg(&pdev->dev, "init swiotlb failed\n");
+ }
+ list_add(&instance->list, &sta2x11_instance_list);
+}
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_STMICRO, 0xcc17, sta2x11_new_instance);
+
+/*
+ * Utility functions used in this file from below
+ */
+static struct sta2x11_instance *sta2x11_pdev_to_instance(struct pci_dev *pdev)
+{
+ struct sta2x11_instance *instance;
+ int ep;
+
+ list_for_each_entry(instance, &sta2x11_instance_list, list) {
+ ep = pdev->bus->number - instance->bus0;
+ if (ep >= 0 && ep < STA2X11_NR_EP)
+ return instance;
+ }
+ return NULL;
+}
+
+static int sta2x11_pdev_to_ep(struct pci_dev *pdev)
+{
+ struct sta2x11_instance *instance;
+
+ instance = sta2x11_pdev_to_instance(pdev);
+ if (!instance)
+ return -1;
+
+ return pdev->bus->number - instance->bus0;
+}
+
+static struct sta2x11_mapping *sta2x11_pdev_to_mapping(struct pci_dev *pdev)
+{
+ struct sta2x11_instance *instance;
+ int ep;
+
+ instance = sta2x11_pdev_to_instance(pdev);
+ if (!instance)
+ return NULL;
+ ep = sta2x11_pdev_to_ep(pdev);
+ return instance->map + ep;
+}
+
+/* This is exported, as some devices need to access the MFD registers */
+struct sta2x11_instance *sta2x11_get_instance(struct pci_dev *pdev)
+{
+ return sta2x11_pdev_to_instance(pdev);
+}
+EXPORT_SYMBOL(sta2x11_get_instance);
+
+
+/**
+ * p2a - Translate physical address to STA2x11 AMBA address,
+ * used for DMA transfers to STA2x11
+ * @p: Physical address
+ * @pdev: PCI device (must be hosted within the connext)
+ */
+static dma_addr_t p2a(dma_addr_t p, struct pci_dev *pdev)
+{
+ struct sta2x11_mapping *map;
+ dma_addr_t a;
+
+ map = sta2x11_pdev_to_mapping(pdev);
+ a = p + map->amba_base;
+ return a;
+}
+
+/**
+ * a2p - Translate STA2x11 AMBA address to physical address
+ * used for DMA transfers from STA2x11
+ * @a: STA2x11 AMBA address
+ * @pdev: PCI device (must be hosted within the connext)
+ */
+static dma_addr_t a2p(dma_addr_t a, struct pci_dev *pdev)
+{
+ struct sta2x11_mapping *map;
+ dma_addr_t p;
+
+ map = sta2x11_pdev_to_mapping(pdev);
+ p = a - map->amba_base;
+ return p;
+}
+
+/**
+ * sta2x11_swiotlb_alloc_coherent - Allocate swiotlb bounce buffers
+ * returns virtual address. This is the only "special" function here.
+ * @dev: PCI device
+ * @size: Size of the buffer
+ * @dma_handle: DMA address
+ * @flags: memory flags
+ */
+static void *sta2x11_swiotlb_alloc_coherent(struct device *dev,
+ size_t size,
+ dma_addr_t *dma_handle,
+ gfp_t flags,
+ struct dma_attrs *attrs)
+{
+ void *vaddr;
+
+ vaddr = dma_generic_alloc_coherent(dev, size, dma_handle, flags, attrs);
+ if (!vaddr)
+ vaddr = swiotlb_alloc_coherent(dev, size, dma_handle, flags);
+ *dma_handle = p2a(*dma_handle, to_pci_dev(dev));
+ return vaddr;
+}
+
+/* We have our own dma_ops: the same as swiotlb but from alloc (above) */
+static struct dma_map_ops sta2x11_dma_ops = {
+ .alloc = sta2x11_swiotlb_alloc_coherent,
+ .free = swiotlb_free_coherent,
+ .map_page = swiotlb_map_page,
+ .unmap_page = swiotlb_unmap_page,
+ .map_sg = swiotlb_map_sg_attrs,
+ .unmap_sg = swiotlb_unmap_sg_attrs,
+ .sync_single_for_cpu = swiotlb_sync_single_for_cpu,
+ .sync_single_for_device = swiotlb_sync_single_for_device,
+ .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
+ .sync_sg_for_device = swiotlb_sync_sg_for_device,
+ .mapping_error = swiotlb_dma_mapping_error,
+ .dma_supported = NULL, /* FIXME: we should use this instead! */
+};
+
+/* At setup time, we use our own ops if the device is a ConneXt one */
+static void sta2x11_setup_pdev(struct pci_dev *pdev)
+{
+ struct sta2x11_instance *instance = sta2x11_pdev_to_instance(pdev);
+
+ if (!instance) /* either a sta2x11 bridge or another ST device */
+ return;
+ pci_set_consistent_dma_mask(pdev, STA2X11_AMBA_SIZE - 1);
+ pci_set_dma_mask(pdev, STA2X11_AMBA_SIZE - 1);
+ pdev->dev.archdata.dma_ops = &sta2x11_dma_ops;
+
+ /* We must enable all devices as master, for audio DMA to work */
+ pci_set_master(pdev);
+}
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_STMICRO, PCI_ANY_ID, sta2x11_setup_pdev);
+
+/*
+ * The following three functions are exported (used in swiotlb: FIXME)
+ */
+/**
+ * dma_capable - Check if device can manage DMA transfers (FIXME: kill it)
+ * @dev: device for a PCI device
+ * @addr: DMA address
+ * @size: DMA size
+ */
+bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
+{
+ struct sta2x11_mapping *map;
+
+ if (dev->archdata.dma_ops != &sta2x11_dma_ops) {
+ if (!dev->dma_mask)
+ return false;
+ return addr + size - 1 <= *dev->dma_mask;
+ }
+
+ map = sta2x11_pdev_to_mapping(to_pci_dev(dev));
+
+ if (!map || (addr < map->amba_base))
+ return false;
+ if (addr + size >= map->amba_base + STA2X11_AMBA_SIZE) {
+ return false;
+ }
+
+ return true;
+}
+
+/**
+ * phys_to_dma - Return the DMA AMBA address used for this STA2x11 device
+ * @dev: device for a PCI device
+ * @paddr: Physical address
+ */
+dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
+{
+ if (dev->archdata.dma_ops != &sta2x11_dma_ops)
+ return paddr;
+ return p2a(paddr, to_pci_dev(dev));
+}
+
+/**
+ * dma_to_phys - Return the physical address used for this STA2x11 DMA address
+ * @dev: device for a PCI device
+ * @daddr: STA2x11 AMBA DMA address
+ */
+phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
+{
+ if (dev->archdata.dma_ops != &sta2x11_dma_ops)
+ return daddr;
+ return a2p(daddr, to_pci_dev(dev));
+}
+
+
+/*
+ * At boot we must set up the mappings for the pcie-to-amba bridge.
+ * It involves device access, and the same happens at suspend/resume time
+ */
+
+#define AHB_MAPB 0xCA4
+#define AHB_CRW(i) (AHB_MAPB + 0 + (i) * 0x10)
+#define AHB_CRW_SZMASK 0xfffffc00UL
+#define AHB_CRW_ENABLE (1 << 0)
+#define AHB_CRW_WTYPE_MEM (2 << 1)
+#define AHB_CRW_ROE (1UL << 3) /* Relax Order Ena */
+#define AHB_CRW_NSE (1UL << 4) /* No Snoop Enable */
+#define AHB_BASE(i) (AHB_MAPB + 4 + (i) * 0x10)
+#define AHB_PEXLBASE(i) (AHB_MAPB + 8 + (i) * 0x10)
+#define AHB_PEXHBASE(i) (AHB_MAPB + 12 + (i) * 0x10)
+
+/* At probe time, enable mapping for each endpoint, using the pdev */
+static void sta2x11_map_ep(struct pci_dev *pdev)
+{
+ struct sta2x11_mapping *map = sta2x11_pdev_to_mapping(pdev);
+ int i;
+
+ if (!map)
+ return;
+ pci_read_config_dword(pdev, AHB_BASE(0), &map->amba_base);
+
+ /* Configure AHB mapping */
+ pci_write_config_dword(pdev, AHB_PEXLBASE(0), 0);
+ pci_write_config_dword(pdev, AHB_PEXHBASE(0), 0);
+ pci_write_config_dword(pdev, AHB_CRW(0), STA2X11_AMBA_SIZE |
+ AHB_CRW_WTYPE_MEM | AHB_CRW_ENABLE);
+
+ /* Disable all the other windows */
+ for (i = 1; i < STA2X11_NR_FUNCS; i++)
+ pci_write_config_dword(pdev, AHB_CRW(i), 0);
+
+ dev_info(&pdev->dev,
+ "sta2x11: Map EP %i: AMBA address %#8x-%#8x\n",
+ sta2x11_pdev_to_ep(pdev), map->amba_base,
+ map->amba_base + STA2X11_AMBA_SIZE - 1);
+}
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_STMICRO, PCI_ANY_ID, sta2x11_map_ep);
+
+#ifdef CONFIG_PM /* Some register values must be saved and restored */
+
+static void suspend_mapping(struct pci_dev *pdev)
+{
+ struct sta2x11_mapping *map = sta2x11_pdev_to_mapping(pdev);
+ int i;
+
+ if (!map)
+ return;
+
+ if (map->is_suspended)
+ return;
+ map->is_suspended = 1;
+
+ /* Save all window configs */
+ for (i = 0; i < STA2X11_NR_FUNCS; i++) {
+ struct sta2x11_ahb_regs *regs = map->regs + i;
+
+ pci_read_config_dword(pdev, AHB_BASE(i), &regs->base);
+ pci_read_config_dword(pdev, AHB_PEXLBASE(i), &regs->pexlbase);
+ pci_read_config_dword(pdev, AHB_PEXHBASE(i), &regs->pexhbase);
+ pci_read_config_dword(pdev, AHB_CRW(i), &regs->crw);
+ }
+}
+DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_STMICRO, PCI_ANY_ID, suspend_mapping);
+
+static void resume_mapping(struct pci_dev *pdev)
+{
+ struct sta2x11_mapping *map = sta2x11_pdev_to_mapping(pdev);
+ int i;
+
+ if (!map)
+ return;
+
+
+ if (!map->is_suspended)
+ goto out;
+ map->is_suspended = 0;
+
+ /* Restore all window configs */
+ for (i = 0; i < STA2X11_NR_FUNCS; i++) {
+ struct sta2x11_ahb_regs *regs = map->regs + i;
+
+ pci_write_config_dword(pdev, AHB_BASE(i), regs->base);
+ pci_write_config_dword(pdev, AHB_PEXLBASE(i), regs->pexlbase);
+ pci_write_config_dword(pdev, AHB_PEXHBASE(i), regs->pexhbase);
+ pci_write_config_dword(pdev, AHB_CRW(i), regs->crw);
+ }
+out:
+ pci_set_master(pdev); /* Like at boot, enable master on all devices */
+}
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_STMICRO, PCI_ANY_ID, resume_mapping);
+
+#endif /* CONFIG_PM */
diff --git a/arch/x86/platform/olpc/olpc-xo1-sci.c b/arch/x86/platform/olpc/olpc-xo1-sci.c
index 1d4c783..04b8c73 100644
--- a/arch/x86/platform/olpc/olpc-xo1-sci.c
+++ b/arch/x86/platform/olpc/olpc-xo1-sci.c
@@ -18,6 +18,7 @@
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
+#include <linux/pm_wakeup.h>
#include <linux/mfd/core.h>
#include <linux/power_supply.h>
#include <linux/suspend.h>
@@ -83,8 +84,12 @@ static void send_ebook_state(void)
return;
}

+ if (!!test_bit(SW_TABLET_MODE, ebook_switch_idev->sw) == state)
+ return; /* Nothing new to report. */
+
input_report_switch(ebook_switch_idev, SW_TABLET_MODE, state);
input_sync(ebook_switch_idev);
+ pm_wakeup_event(&ebook_switch_idev->dev, 0);
}

static void flip_lid_inverter(void)
@@ -123,8 +128,12 @@ static void detect_lid_state(void)
/* Report current lid switch state through input layer */
static void send_lid_state(void)
{
+ if (!!test_bit(SW_LID, lid_switch_idev->sw) == !lid_open)
+ return; /* Nothing new to report. */
+
input_report_switch(lid_switch_idev, SW_LID, !lid_open);
input_sync(lid_switch_idev);
+ pm_wakeup_event(&lid_switch_idev->dev, 0);
}

static ssize_t lid_wake_mode_show(struct device *dev,
@@ -213,11 +222,30 @@ static irqreturn_t xo1_sci_intr(int irq, void *dev_id)

dev_dbg(&pdev->dev, "sts %x gpe %x\n", sts, gpe);

- if (sts & CS5536_PWRBTN_FLAG && !(sts & CS5536_WAK_FLAG)) {
- input_report_key(power_button_idev, KEY_POWER, 1);
- input_sync(power_button_idev);
- input_report_key(power_button_idev, KEY_POWER, 0);
- input_sync(power_button_idev);
+ if (sts & CS5536_PWRBTN_FLAG) {
+ if (!(sts & CS5536_WAK_FLAG)) {
+ /* Only report power button input when it was pressed
+ * during regular operation (as opposed to when it
+ * was used to wake the system). */
+ input_report_key(power_button_idev, KEY_POWER, 1);
+ input_sync(power_button_idev);
+ input_report_key(power_button_idev, KEY_POWER, 0);
+ input_sync(power_button_idev);
+ }
+ /* Report the wakeup event in all cases. */
+ pm_wakeup_event(&power_button_idev->dev, 0);
+ }
+
+ if ((sts & (CS5536_RTC_FLAG | CS5536_WAK_FLAG)) ==
+ (CS5536_RTC_FLAG | CS5536_WAK_FLAG)) {
+ /* When the system is woken by the RTC alarm, report the
+ * event on the rtc device. */
+ struct device *rtc = bus_find_device_by_name(
+ &platform_bus_type, NULL, "rtc_cmos");
+ if (rtc) {
+ pm_wakeup_event(rtc, 0);
+ put_device(rtc);
+ }
}

if (gpe & CS5536_GPIOM7_PME_FLAG) { /* EC GPIO */
@@ -310,9 +338,10 @@ static int __devinit setup_sci_interrupt(struct platform_device *pdev)
outb(lo, CS5536_PIC_INT_SEL2);
}

- /* Enable SCI from power button, and clear pending interrupts */
+ /* Enable interesting SCI events, and clear pending interrupts */
sts = inl(acpi_base + CS5536_PM1_STS);
- outl((CS5536_PM_PWRBTN << 16) | 0xffff, acpi_base + CS5536_PM1_STS);
+ outl(((CS5536_PM_PWRBTN | CS5536_PM_RTC) << 16) | 0xffff,
+ acpi_base + CS5536_PM1_STS);

r = request_irq(sci_irq, xo1_sci_intr, 0, DRV_NAME, pdev);
if (r)
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 86dd1e3..b021a18 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -53,17 +53,13 @@ extern void ctrl_alt_del(void);

#define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))

-/*
- * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on.
- * This seems a good reason to start with NumLock off. On HIL keyboards
- * of PARISC machines however there is no NumLock key and everyone expects the
- * keypad to be used for numbers.
- */
-
-#if defined(CONFIG_PARISC) && (defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD))
-#define KBD_DEFLEDS (1 << VC_NUMLOCK)
+#if defined(CONFIG_X86) || defined(CONFIG_PARISC)
+#include <asm/kbdleds.h>
#else
-#define KBD_DEFLEDS 0
+static inline int kbd_defleds(void)
+{
+ return 0;
+}
#endif

#define KBD_DEFLOCK 0
@@ -1512,8 +1508,8 @@ int __init kbd_init(void)
int error;

for (i = 0; i < MAX_NR_CONSOLES; i++) {
- kbd_table[i].ledflagstate = KBD_DEFLEDS;
- kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
+ kbd_table[i].ledflagstate = kbd_defleds();
+ kbd_table[i].default_ledflagstate = kbd_defleds();
kbd_table[i].ledmode = LED_SHOW_FLAGS;
kbd_table[i].lockstate = KBD_DEFLOCK;
kbd_table[i].slockstate = 0;
diff --git a/include/linux/cs5535.h b/include/linux/cs5535.h
index c077aec..cfe8323 100644
--- a/include/linux/cs5535.h
+++ b/include/linux/cs5535.h
@@ -95,6 +95,7 @@ static inline int cs5535_pic_unreqz_select_high(unsigned int group,

/* CS5536_PM1_STS bits */
#define CS5536_WAK_FLAG (1 << 15)
+#define CS5536_RTC_FLAG (1 << 10)
#define CS5536_PWRBTN_FLAG (1 << 8)

/* CS5536_PM1_EN bits */
--
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