Merge branch 'linus' into cpus4096

Conflicts:

	drivers/acpi/processor_throttling.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 455 deletions

diff --git a/arch/ppc/syslib/m8260_pci_erratum9.c b/arch/ppc/syslib/m8260_pci_erratum9.c
deleted file mode 100644
index ebb8c8f..0000000
--- a/arch/ppc/syslib/m8260_pci_erratum9.c
+++ /dev/null
@@ -1,455 +0,0 @@
-/*
- * Workaround for device erratum PCI 9.
- * See Motorola's "XPC826xA Family Device Errata Reference."
- * The erratum applies to all 8260 family Hip4 processors.  It is scheduled 
- * to be fixed in HiP4 Rev C.  Erratum PCI 9 states that a simultaneous PCI 
- * inbound write transaction and PCI outbound read transaction can result in a 
- * bus deadlock.  The suggested workaround is to use the IDMA controller to 
- * perform all reads from PCI configuration, memory, and I/O space.
- *
- * Author:  andy_lowe@mvista.com
- *
- * 2003 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/types.h>
-#include <linux/string.h>
-
-#include <asm/io.h>
-#include <asm/pci-bridge.h>
-#include <asm/machdep.h>
-#include <asm/byteorder.h>
-#include <asm/mpc8260.h>
-#include <asm/immap_cpm2.h>
-#include <asm/cpm2.h>
-
-#include "m82xx_pci.h"
-
-#ifdef CONFIG_8260_PCI9
-/*#include <asm/mpc8260_pci9.h>*/ /* included in asm/io.h */
-
-#define IDMA_XFER_BUF_SIZE 64	/* size of the IDMA transfer buffer */
-
-/* define a structure for the IDMA dpram usage */
-typedef struct idma_dpram_s {
-	idma_t pram;				/* IDMA parameter RAM */
-	u_char xfer_buf[IDMA_XFER_BUF_SIZE];	/* IDMA transfer buffer */
-	idma_bd_t bd;				/* buffer descriptor */
-} idma_dpram_t;
-
-/* define offsets relative to start of IDMA dpram */
-#define IDMA_XFER_BUF_OFFSET (sizeof(idma_t))
-#define IDMA_BD_OFFSET (sizeof(idma_t) + IDMA_XFER_BUF_SIZE)
-
-/* define globals */
-static volatile idma_dpram_t *idma_dpram;
-
-/* Exactly one of CONFIG_8260_PCI9_IDMAn must be defined, 
- * where n is 1, 2, 3, or 4.  This selects the IDMA channel used for 
- * the PCI9 workaround.
- */
-#ifdef CONFIG_8260_PCI9_IDMA1
-#define IDMA_CHAN 0
-#define PROFF_IDMA PROFF_IDMA1_BASE
-#define IDMA_PAGE CPM_CR_IDMA1_PAGE
-#define IDMA_SBLOCK CPM_CR_IDMA1_SBLOCK
-#endif
-#ifdef CONFIG_8260_PCI9_IDMA2
-#define IDMA_CHAN 1
-#define PROFF_IDMA PROFF_IDMA2_BASE
-#define IDMA_PAGE CPM_CR_IDMA2_PAGE
-#define IDMA_SBLOCK CPM_CR_IDMA2_SBLOCK
-#endif
-#ifdef CONFIG_8260_PCI9_IDMA3
-#define IDMA_CHAN 2
-#define PROFF_IDMA PROFF_IDMA3_BASE
-#define IDMA_PAGE CPM_CR_IDMA3_PAGE
-#define IDMA_SBLOCK CPM_CR_IDMA3_SBLOCK
-#endif
-#ifdef CONFIG_8260_PCI9_IDMA4
-#define IDMA_CHAN 3
-#define PROFF_IDMA PROFF_IDMA4_BASE
-#define IDMA_PAGE CPM_CR_IDMA4_PAGE
-#define IDMA_SBLOCK CPM_CR_IDMA4_SBLOCK
-#endif
-
-void idma_pci9_init(void)
-{
-	uint dpram_offset;
-	volatile idma_t *pram;
-	volatile im_idma_t *idma_reg;
-	volatile cpm2_map_t *immap = cpm2_immr;
-
-	/* allocate IDMA dpram */
-	dpram_offset = cpm_dpalloc(sizeof(idma_dpram_t), 64);
-	idma_dpram = cpm_dpram_addr(dpram_offset); 
-
-	/* initialize the IDMA parameter RAM */
-	memset((void *)idma_dpram, 0, sizeof(idma_dpram_t));
-	pram = &idma_dpram->pram;
-	pram->ibase = dpram_offset + IDMA_BD_OFFSET;
-	pram->dpr_buf = dpram_offset + IDMA_XFER_BUF_OFFSET;
-	pram->ss_max = 32;
-	pram->dts = 32;
-
-	/* initialize the IDMA_BASE pointer to the IDMA parameter RAM */
-	*((ushort *) &immap->im_dprambase[PROFF_IDMA]) = dpram_offset;
-
-	/* initialize the IDMA registers */
-	idma_reg = (volatile im_idma_t *) &immap->im_sdma.sdma_idsr1;
-	idma_reg[IDMA_CHAN].idmr = 0;		/* mask all IDMA interrupts */
-	idma_reg[IDMA_CHAN].idsr = 0xff;	/* clear all event flags */
-
-	printk(KERN_WARNING
-		"Using IDMA%d for MPC8260 device erratum PCI 9 workaround\n",
-		IDMA_CHAN + 1);
-
-	return;
-}
-
-/* Use the IDMA controller to transfer data from I/O memory to local RAM.
- * The src address must be a physical address suitable for use by the DMA 
- * controller with no translation.  The dst address must be a kernel virtual 
- * address.  The dst address is translated to a physical address via 
- * virt_to_phys().
- * The sinc argument specifies whether or not the source address is incremented
- * by the DMA controller.  The source address is incremented if and only if sinc
- * is non-zero.  The destination address is always incremented since the 
- * destination is always host RAM.
- */
-static void 
-idma_pci9_read(u8 *dst, u8 *src, int bytes, int unit_size, int sinc)
-{
-	unsigned long flags;
-	volatile idma_t *pram = &idma_dpram->pram;
-	volatile idma_bd_t *bd = &idma_dpram->bd;
-	volatile cpm2_map_t *immap = cpm2_immr;
-
-	local_irq_save(flags);
-
-	/* initialize IDMA parameter RAM for this transfer */
-	if (sinc)
-		pram->dcm = IDMA_DCM_DMA_WRAP_64 | IDMA_DCM_SINC
-			  | IDMA_DCM_DINC | IDMA_DCM_SD_MEM2MEM;
-	else
-		pram->dcm = IDMA_DCM_DMA_WRAP_64 | IDMA_DCM_DINC 
-			  | IDMA_DCM_SD_MEM2MEM;
-	pram->ibdptr = pram->ibase;
-	pram->sts = unit_size;
-	pram->istate = 0;
-
-	/* initialize the buffer descriptor */
-	bd->dst = virt_to_phys(dst);
-	bd->src = (uint) src;
-	bd->len = bytes;
-	bd->flags = IDMA_BD_V | IDMA_BD_W | IDMA_BD_I | IDMA_BD_L | IDMA_BD_DGBL
-		  | IDMA_BD_DBO_BE | IDMA_BD_SBO_BE | IDMA_BD_SDTB;
-
-	/* issue the START_IDMA command to the CP */
-	while (immap->im_cpm.cp_cpcr & CPM_CR_FLG);
-	immap->im_cpm.cp_cpcr = mk_cr_cmd(IDMA_PAGE, IDMA_SBLOCK, 0,
-					 CPM_CR_START_IDMA) | CPM_CR_FLG;
-	while (immap->im_cpm.cp_cpcr & CPM_CR_FLG);
-
-	/* wait for transfer to complete */
-	while(bd->flags & IDMA_BD_V);
-
-	local_irq_restore(flags);
-
-	return;
-}
-
-/* Use the IDMA controller to transfer data from I/O memory to local RAM.
- * The dst address must be a physical address suitable for use by the DMA 
- * controller with no translation.  The src address must be a kernel virtual 
- * address.  The src address is translated to a physical address via 
- * virt_to_phys().
- * The dinc argument specifies whether or not the dest address is incremented
- * by the DMA controller.  The source address is incremented if and only if sinc
- * is non-zero.  The source address is always incremented since the 
- * source is always host RAM.
- */
-static void 
-idma_pci9_write(u8 *dst, u8 *src, int bytes, int unit_size, int dinc)
-{
-	unsigned long flags;
-	volatile idma_t *pram = &idma_dpram->pram;
-	volatile idma_bd_t *bd = &idma_dpram->bd;
-	volatile cpm2_map_t *immap = cpm2_immr;
-
-	local_irq_save(flags);
-
-	/* initialize IDMA parameter RAM for this transfer */
-	if (dinc)
-		pram->dcm = IDMA_DCM_DMA_WRAP_64 | IDMA_DCM_SINC
-			  | IDMA_DCM_DINC | IDMA_DCM_SD_MEM2MEM;
-	else
-		pram->dcm = IDMA_DCM_DMA_WRAP_64 | IDMA_DCM_SINC 
-			  | IDMA_DCM_SD_MEM2MEM;
-	pram->ibdptr = pram->ibase;
-	pram->sts = unit_size;
-	pram->istate = 0;
-
-	/* initialize the buffer descriptor */
-	bd->dst = (uint) dst;
-	bd->src = virt_to_phys(src);
-	bd->len = bytes;
-	bd->flags = IDMA_BD_V | IDMA_BD_W | IDMA_BD_I | IDMA_BD_L | IDMA_BD_DGBL
-		  | IDMA_BD_DBO_BE | IDMA_BD_SBO_BE | IDMA_BD_SDTB;
-
-	/* issue the START_IDMA command to the CP */
-	while (immap->im_cpm.cp_cpcr & CPM_CR_FLG);
-	immap->im_cpm.cp_cpcr = mk_cr_cmd(IDMA_PAGE, IDMA_SBLOCK, 0,
-					 CPM_CR_START_IDMA) | CPM_CR_FLG;
-	while (immap->im_cpm.cp_cpcr & CPM_CR_FLG);
-
-	/* wait for transfer to complete */
-	while(bd->flags & IDMA_BD_V);
-
-	local_irq_restore(flags);
-
-	return;
-}
-
-/* Same as idma_pci9_read, but 16-bit little-endian byte swapping is performed
- * if the unit_size is 2, and 32-bit little-endian byte swapping is performed if
- * the unit_size is 4.
- */
-static void 
-idma_pci9_read_le(u8 *dst, u8 *src, int bytes, int unit_size, int sinc)
-{
-	int i;
-	u8 *p;
-
-	idma_pci9_read(dst, src, bytes, unit_size, sinc);
-	switch(unit_size) {
-		case 2:
-			for (i = 0, p = dst; i < bytes; i += 2, p += 2)
-				swab16s((u16 *) p);
-			break;
-		case 4:
-			for (i = 0, p = dst; i < bytes; i += 4, p += 4)
-				swab32s((u32 *) p);
-			break;
-		default:
-			break;
-	}
-}
-EXPORT_SYMBOL(idma_pci9_init);
-EXPORT_SYMBOL(idma_pci9_read);
-EXPORT_SYMBOL(idma_pci9_read_le);
-
-static inline int is_pci_mem(unsigned long addr)
-{
-	if (addr >= M82xx_PCI_LOWER_MMIO &&
-		addr <= M82xx_PCI_UPPER_MMIO)
-		return 1;
-	if (addr >= M82xx_PCI_LOWER_MEM &&
-		addr <= M82xx_PCI_UPPER_MEM)
-		return 1;
-	return 0;
-}
-
-#define is_pci_mem(pa) ( (pa > 0x80000000) && (pa < 0xc0000000))
-int readb(volatile unsigned char *addr)
-{
-	u8 val;
-	unsigned long pa = iopa((unsigned long) addr);
-
-	if (!is_pci_mem(pa))
-		return in_8(addr);
-
-	idma_pci9_read((u8 *)&val, (u8 *)pa, sizeof(val), sizeof(val), 0);
-	return val;
-}
-
-int readw(volatile unsigned short *addr)
-{
-	u16 val;
-	unsigned long pa = iopa((unsigned long) addr);
-
-	if (!is_pci_mem(pa))
-		return in_le16(addr);
-
-	idma_pci9_read((u8 *)&val, (u8 *)pa, sizeof(val), sizeof(val), 0);
-	return swab16(val);
-}
-
-unsigned readl(volatile unsigned *addr)
-{
-	u32 val;
-	unsigned long pa = iopa((unsigned long) addr);
-
-	if (!is_pci_mem(pa))
-		return in_le32(addr);
-
-	idma_pci9_read((u8 *)&val, (u8 *)pa, sizeof(val), sizeof(val), 0);
-	return swab32(val);
-}
-
-int inb(unsigned port)
-{
-	u8 val;
-	u8 *addr = (u8 *)(port + _IO_BASE);
-
-	idma_pci9_read((u8 *)&val, (u8 *)addr, sizeof(val), sizeof(val), 0);
-	return val;
-}
-
-int inw(unsigned port)
-{
-	u16 val;
-	u8 *addr = (u8 *)(port + _IO_BASE);
-
-	idma_pci9_read((u8 *)&val, (u8 *)addr, sizeof(val), sizeof(val), 0);
-	return swab16(val);
-}
-
-unsigned inl(unsigned port)
-{
-	u32 val;
-	u8 *addr = (u8 *)(port + _IO_BASE);
-
-	idma_pci9_read((u8 *)&val, (u8 *)addr, sizeof(val), sizeof(val), 0);
-	return swab32(val);
-}
-
-void insb(unsigned port, void *buf, int ns)
-{
-	u8 *addr = (u8 *)(port + _IO_BASE);
-
-	idma_pci9_read((u8 *)buf, (u8 *)addr, ns*sizeof(u8), sizeof(u8), 0);
-}
-
-void insw(unsigned port, void *buf, int ns)
-{
-	u8 *addr = (u8 *)(port + _IO_BASE);
-
-	idma_pci9_read((u8 *)buf, (u8 *)addr, ns*sizeof(u16), sizeof(u16), 0);
-}
-
-void insl(unsigned port, void *buf, int nl)
-{
-	u8 *addr = (u8 *)(port + _IO_BASE);
-
-	idma_pci9_read((u8 *)buf, (u8 *)addr, nl*sizeof(u32), sizeof(u32), 0);
-}
-
-void *memcpy_fromio(void *dest, unsigned long src, size_t count)
-{
-	unsigned long pa = iopa((unsigned long) src);
-
-	if (is_pci_mem(pa))
-		idma_pci9_read((u8 *)dest, (u8 *)pa, count, 32, 1);
-	else
-		memcpy(dest, (void *)src, count);
-	return dest;
-}
-
-EXPORT_SYMBOL(readb);
-EXPORT_SYMBOL(readw);
-EXPORT_SYMBOL(readl);
-EXPORT_SYMBOL(inb);
-EXPORT_SYMBOL(inw);
-EXPORT_SYMBOL(inl);
-EXPORT_SYMBOL(insb);
-EXPORT_SYMBOL(insw);
-EXPORT_SYMBOL(insl);
-EXPORT_SYMBOL(memcpy_fromio);
-
-#endif	/* ifdef CONFIG_8260_PCI9 */
-
-/* Indirect PCI routines adapted from arch/ppc/kernel/indirect_pci.c.
- * Copyright (C) 1998 Gabriel Paubert.
- */
-#ifndef CONFIG_8260_PCI9
-#define cfg_read(val, addr, type, op)	*val = op((type)(addr))
-#else
-#define cfg_read(val, addr, type, op) \
-	idma_pci9_read_le((u8*)(val),(u8*)(addr),sizeof(*(val)),sizeof(*(val)),0)
-#endif
-
-#define cfg_write(val, addr, type, op)	op((type *)(addr), (val))
-
-static int indirect_write_config(struct pci_bus *pbus, unsigned int devfn, int where,
-			 int size, u32 value)
-{
-	struct pci_controller *hose = pbus->sysdata;
-	u8 cfg_type = 0;
-	if (ppc_md.pci_exclude_device)
-		if (ppc_md.pci_exclude_device(pbus->number, devfn))
-			return PCIBIOS_DEVICE_NOT_FOUND;
-
-	if (hose->set_cfg_type)
-		if (pbus->number != hose->first_busno)
-			cfg_type = 1;
-
-	out_be32(hose->cfg_addr,
-		 (((where & 0xfc) | cfg_type) << 24) | (devfn << 16)
-		 | ((pbus->number - hose->bus_offset) << 8) | 0x80);
-
-	switch (size)
-	{
-		case 1:
-			cfg_write(value, hose->cfg_data + (where & 3), u8, out_8);
-			break;
-		case 2:
-			cfg_write(value, hose->cfg_data + (where & 2), u16, out_le16);
-			break;
-		case 4:
-			cfg_write(value, hose->cfg_data + (where & 0), u32, out_le32);
-			break;
-	}		
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int indirect_read_config(struct pci_bus *pbus, unsigned int devfn, int where,
-			 int size, u32 *value)
-{
-	struct pci_controller *hose = pbus->sysdata;
-	u8 cfg_type = 0;
-	if (ppc_md.pci_exclude_device)
-		if (ppc_md.pci_exclude_device(pbus->number, devfn))
-			return PCIBIOS_DEVICE_NOT_FOUND;
-
-	if (hose->set_cfg_type)
-		if (pbus->number != hose->first_busno)
-			cfg_type = 1;
-
-	out_be32(hose->cfg_addr,
-		 (((where & 0xfc) | cfg_type) << 24) | (devfn << 16)
-		 | ((pbus->number - hose->bus_offset) << 8) | 0x80);
-
-	switch (size)
-	{
-		case 1:
-			cfg_read(value, hose->cfg_data + (where & 3), u8 *, in_8);
-			break;
-		case 2:
-			cfg_read(value, hose->cfg_data + (where & 2), u16 *, in_le16);
-			break;
-		case 4:
-			cfg_read(value, hose->cfg_data + (where & 0), u32 *, in_le32);
-			break;
-	}		
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops indirect_pci_ops =
-{
-	.read = indirect_read_config,
-	.write = indirect_write_config,
-};
-
-void
-setup_m8260_indirect_pci(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data)
-{
-	hose->ops = &indirect_pci_ops;
-	hose->cfg_addr = (unsigned int *) ioremap(cfg_addr, 4);
-	hose->cfg_data = (unsigned char *) ioremap(cfg_data, 4);
-}