ARM: ixp4xx: Delete old PCI driver

We are just using the new PCI driver in the proper PCI host
drivers folder: drivers/pci/controller/pci-ixp4xx.c.

The new driver does not support indirect PCI but it has
turned out noone is using this. If the feature is desired
we have ways to implement it, suggested by John Linville.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220211223238.648934-4-linus.walleij@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 0 insertions, 545 deletions

diff --git a/arch/arm/mach-ixp4xx/include/mach/io.h b/arch/arm/mach-ixp4xx/include/mach/io.h
deleted file mode 100644
index 014cf6dcaf8b..000000000000
--- a/arch/arm/mach-ixp4xx/include/mach/io.h
+++ /dev/null
@@ -1,545 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * arch/arm/mach-ixp4xx/include/mach/io.h
- *
- * Author: Deepak Saxena <dsaxena@plexity.net>
- *
- * Copyright (C) 2002-2005  MontaVista Software, Inc.
- */
-
-#ifndef __ASM_ARM_ARCH_IO_H
-#define __ASM_ARM_ARCH_IO_H
-
-#include <linux/bitops.h>
-
-#include <mach/hardware.h>
-
-extern int (*ixp4xx_pci_read)(u32 addr, u32 cmd, u32* data);
-extern int ixp4xx_pci_write(u32 addr, u32 cmd, u32 data);
-
-
-/*
- * IXP4xx provides two methods of accessing PCI memory space:
- *
- * 1) A direct mapped window from 0x48000000 to 0x4BFFFFFF (64MB).
- *    To access PCI via this space, we simply ioremap() the BAR
- *    into the kernel and we can use the standard read[bwl]/write[bwl]
- *    macros. This is the preffered method due to speed but it
- *    limits the system to just 64MB of PCI memory. This can be
- *    problematic if using video cards and other memory-heavy targets.
- *
- * 2) If > 64MB of memory space is required, the IXP4xx can use indirect
- *    registers to access the whole 4 GB of PCI memory space (as we do below
- *    for I/O transactions). This allows currently for up to 1 GB (0x10000000
- *    to 0x4FFFFFFF) of memory on the bus. The disadvantage of this is that
- *    every PCI access requires three local register accesses plus a spinlock,
- *    but in some cases the performance hit is acceptable. In addition, you
- *    cannot mmap() PCI devices in this case.
- */
-#ifdef	CONFIG_IXP4XX_INDIRECT_PCI
-
-/*
- * In the case of using indirect PCI, we simply return the actual PCI
- * address and our read/write implementation use that to drive the 
- * access registers. If something outside of PCI is ioremap'd, we
- * fallback to the default.
- */
-
-extern unsigned long pcibios_min_mem;
-static inline int is_pci_memory(u32 addr)
-{
-	return (addr >= pcibios_min_mem) && (addr <= 0x4FFFFFFF);
-}
-
-#define writeb(v, p)			__indirect_writeb(v, p)
-#define writew(v, p)			__indirect_writew(v, p)
-#define writel(v, p)			__indirect_writel(v, p)
-
-#define writeb_relaxed(v, p)		__indirect_writeb(v, p)
-#define writew_relaxed(v, p)		__indirect_writew(v, p)
-#define writel_relaxed(v, p)		__indirect_writel(v, p)
-
-#define writesb(p, v, l)		__indirect_writesb(p, v, l)
-#define writesw(p, v, l)		__indirect_writesw(p, v, l)
-#define writesl(p, v, l)		__indirect_writesl(p, v, l)
-
-#define readb(p)			__indirect_readb(p)
-#define readw(p)			__indirect_readw(p)
-#define readl(p)			__indirect_readl(p)
-
-#define readb_relaxed(p)		__indirect_readb(p)
-#define readw_relaxed(p)		__indirect_readw(p)
-#define readl_relaxed(p)		__indirect_readl(p)
-
-#define readsb(p, v, l)			__indirect_readsb(p, v, l)
-#define readsw(p, v, l)			__indirect_readsw(p, v, l)
-#define readsl(p, v, l)			__indirect_readsl(p, v, l)
-
-static inline void __indirect_writeb(u8 value, volatile void __iomem *p)
-{
-	u32 addr = (u32)p;
-	u32 n, byte_enables, data;
-
-	if (!is_pci_memory(addr)) {
-		__raw_writeb(value, p);
-		return;
-	}
-
-	n = addr % 4;
-	byte_enables = (0xf & ~BIT(n)) << IXP4XX_PCI_NP_CBE_BESL;
-	data = value << (8*n);
-	ixp4xx_pci_write(addr, byte_enables | NP_CMD_MEMWRITE, data);
-}
-
-static inline void __indirect_writesb(volatile void __iomem *bus_addr,
-				      const void *p, int count)
-{
-	const u8 *vaddr = p;
-
-	while (count--)
-		writeb(*vaddr++, bus_addr);
-}
-
-static inline void __indirect_writew(u16 value, volatile void __iomem *p)
-{
-	u32 addr = (u32)p;
-	u32 n, byte_enables, data;
-
-	if (!is_pci_memory(addr)) {
-		__raw_writew(value, p);
-		return;
-	}
-
-	n = addr % 4;
-	byte_enables = (0xf & ~(BIT(n) | BIT(n+1))) << IXP4XX_PCI_NP_CBE_BESL;
-	data = value << (8*n);
-	ixp4xx_pci_write(addr, byte_enables | NP_CMD_MEMWRITE, data);
-}
-
-static inline void __indirect_writesw(volatile void __iomem *bus_addr,
-				      const void *p, int count)
-{
-	const u16 *vaddr = p;
-
-	while (count--)
-		writew(*vaddr++, bus_addr);
-}
-
-static inline void __indirect_writel(u32 value, volatile void __iomem *p)
-{
-	u32 addr = (__force u32)p;
-
-	if (!is_pci_memory(addr)) {
-		__raw_writel(value, p);
-		return;
-	}
-
-	ixp4xx_pci_write(addr, NP_CMD_MEMWRITE, value);
-}
-
-static inline void __indirect_writesl(volatile void __iomem *bus_addr,
-				      const void *p, int count)
-{
-	const u32 *vaddr = p;
-	while (count--)
-		writel(*vaddr++, bus_addr);
-}
-
-static inline u8 __indirect_readb(const volatile void __iomem *p)
-{
-	u32 addr = (u32)p;
-	u32 n, byte_enables, data;
-
-	if (!is_pci_memory(addr))
-		return __raw_readb(p);
-
-	n = addr % 4;
-	byte_enables = (0xf & ~BIT(n)) << IXP4XX_PCI_NP_CBE_BESL;
-	if (ixp4xx_pci_read(addr, byte_enables | NP_CMD_MEMREAD, &data))
-		return 0xff;
-
-	return data >> (8*n);
-}
-
-static inline void __indirect_readsb(const volatile void __iomem *bus_addr,
-				     void *p, u32 count)
-{
-	u8 *vaddr = p;
-
-	while (count--)
-		*vaddr++ = readb(bus_addr);
-}
-
-static inline u16 __indirect_readw(const volatile void __iomem *p)
-{
-	u32 addr = (u32)p;
-	u32 n, byte_enables, data;
-
-	if (!is_pci_memory(addr))
-		return __raw_readw(p);
-
-	n = addr % 4;
-	byte_enables = (0xf & ~(BIT(n) | BIT(n+1))) << IXP4XX_PCI_NP_CBE_BESL;
-	if (ixp4xx_pci_read(addr, byte_enables | NP_CMD_MEMREAD, &data))
-		return 0xffff;
-
-	return data>>(8*n);
-}
-
-static inline void __indirect_readsw(const volatile void __iomem *bus_addr,
-				     void *p, u32 count)
-{
-	u16 *vaddr = p;
-
-	while (count--)
-		*vaddr++ = readw(bus_addr);
-}
-
-static inline u32 __indirect_readl(const volatile void __iomem *p)
-{
-	u32 addr = (__force u32)p;
-	u32 data;
-
-	if (!is_pci_memory(addr))
-		return __raw_readl(p);
-
-	if (ixp4xx_pci_read(addr, NP_CMD_MEMREAD, &data))
-		return 0xffffffff;
-
-	return data;
-}
-
-static inline void __indirect_readsl(const volatile void __iomem *bus_addr,
-				     void *p, u32 count)
-{
-	u32 *vaddr = p;
-
-	while (count--)
-		*vaddr++ = readl(bus_addr);
-}
-
-
-/*
- * We can use the built-in functions b/c they end up calling writeb/readb
- */
-#define memset_io(c,v,l)		_memset_io((c),(v),(l))
-#define memcpy_fromio(a,c,l)		_memcpy_fromio((a),(c),(l))
-#define memcpy_toio(c,a,l)		_memcpy_toio((c),(a),(l))
-
-#endif /* CONFIG_IXP4XX_INDIRECT_PCI */
-
-#ifndef CONFIG_PCI
-
-#define	__io(v)		__typesafe_io(v)
-
-#else
-
-/*
- * IXP4xx does not have a transparent cpu -> PCI I/O translation
- * window.  Instead, it has a set of registers that must be tweaked
- * with the proper byte lanes, command types, and address for the
- * transaction.  This means that we need to override the default
- * I/O functions.
- */
-
-#define outb outb
-static inline void outb(u8 value, u32 addr)
-{
-	u32 n, byte_enables, data;
-	n = addr % 4;
-	byte_enables = (0xf & ~BIT(n)) << IXP4XX_PCI_NP_CBE_BESL;
-	data = value << (8*n);
-	ixp4xx_pci_write(addr, byte_enables | NP_CMD_IOWRITE, data);
-}
-
-#define outsb outsb
-static inline void outsb(u32 io_addr, const void *p, u32 count)
-{
-	const u8 *vaddr = p;
-
-	while (count--)
-		outb(*vaddr++, io_addr);
-}
-
-#define outw outw
-static inline void outw(u16 value, u32 addr)
-{
-	u32 n, byte_enables, data;
-	n = addr % 4;
-	byte_enables = (0xf & ~(BIT(n) | BIT(n+1))) << IXP4XX_PCI_NP_CBE_BESL;
-	data = value << (8*n);
-	ixp4xx_pci_write(addr, byte_enables | NP_CMD_IOWRITE, data);
-}
-
-#define outsw outsw
-static inline void outsw(u32 io_addr, const void *p, u32 count)
-{
-	const u16 *vaddr = p;
-	while (count--)
-		outw(cpu_to_le16(*vaddr++), io_addr);
-}
-
-#define outl outl
-static inline void outl(u32 value, u32 addr)
-{
-	ixp4xx_pci_write(addr, NP_CMD_IOWRITE, value);
-}
-
-#define outsl outsl
-static inline void outsl(u32 io_addr, const void *p, u32 count)
-{
-	const u32 *vaddr = p;
-	while (count--)
-		outl(cpu_to_le32(*vaddr++), io_addr);
-}
-
-#define inb inb
-static inline u8 inb(u32 addr)
-{
-	u32 n, byte_enables, data;
-	n = addr % 4;
-	byte_enables = (0xf & ~BIT(n)) << IXP4XX_PCI_NP_CBE_BESL;
-	if (ixp4xx_pci_read(addr, byte_enables | NP_CMD_IOREAD, &data))
-		return 0xff;
-
-	return data >> (8*n);
-}
-
-#define insb insb
-static inline void insb(u32 io_addr, void *p, u32 count)
-{
-	u8 *vaddr = p;
-	while (count--)
-		*vaddr++ = inb(io_addr);
-}
-
-#define inw inw
-static inline u16 inw(u32 addr)
-{
-	u32 n, byte_enables, data;
-	n = addr % 4;
-	byte_enables = (0xf & ~(BIT(n) | BIT(n+1))) << IXP4XX_PCI_NP_CBE_BESL;
-	if (ixp4xx_pci_read(addr, byte_enables | NP_CMD_IOREAD, &data))
-		return 0xffff;
-
-	return data>>(8*n);
-}
-
-#define insw insw
-static inline void insw(u32 io_addr, void *p, u32 count)
-{
-	u16 *vaddr = p;
-	while (count--)
-		*vaddr++ = le16_to_cpu(inw(io_addr));
-}
-
-#define inl inl
-static inline u32 inl(u32 addr)
-{
-	u32 data;
-	if (ixp4xx_pci_read(addr, NP_CMD_IOREAD, &data))
-		return 0xffffffff;
-
-	return data;
-}
-
-#define insl insl
-static inline void insl(u32 io_addr, void *p, u32 count)
-{
-	u32 *vaddr = p;
-	while (count--)
-		*vaddr++ = le32_to_cpu(inl(io_addr));
-}
-
-#define PIO_OFFSET      0x10000UL
-#define PIO_MASK        0x0ffffUL
-
-#define	__is_io_address(p)	(((unsigned long)p >= PIO_OFFSET) && \
-					((unsigned long)p <= (PIO_MASK + PIO_OFFSET)))
-
-#define	ioread8(p)			ioread8(p)
-static inline u8 ioread8(const void __iomem *addr)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		return (unsigned int)inb(port & PIO_MASK);
-	else
-#ifndef CONFIG_IXP4XX_INDIRECT_PCI
-		return (unsigned int)__raw_readb(addr);
-#else
-		return (unsigned int)__indirect_readb(addr);
-#endif
-}
-
-#define	ioread8_rep(p, v, c)		ioread8_rep(p, v, c)
-static inline void ioread8_rep(const void __iomem *addr, void *vaddr, u32 count)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		insb(port & PIO_MASK, vaddr, count);
-	else
-#ifndef	CONFIG_IXP4XX_INDIRECT_PCI
-		__raw_readsb(addr, vaddr, count);
-#else
-		__indirect_readsb(addr, vaddr, count);
-#endif
-}
-
-#define	ioread16(p)			ioread16(p)
-static inline u16 ioread16(const void __iomem *addr)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		return	(unsigned int)inw(port & PIO_MASK);
-	else
-#ifndef CONFIG_IXP4XX_INDIRECT_PCI
-		return le16_to_cpu((__force __le16)__raw_readw(addr));
-#else
-		return (unsigned int)__indirect_readw(addr);
-#endif
-}
-
-#define	ioread16_rep(p, v, c)		ioread16_rep(p, v, c)
-static inline void ioread16_rep(const void __iomem *addr, void *vaddr,
-				u32 count)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		insw(port & PIO_MASK, vaddr, count);
-	else
-#ifndef	CONFIG_IXP4XX_INDIRECT_PCI
-		__raw_readsw(addr, vaddr, count);
-#else
-		__indirect_readsw(addr, vaddr, count);
-#endif
-}
-
-#define	ioread32(p)			ioread32(p)
-static inline u32 ioread32(const void __iomem *addr)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		return	(unsigned int)inl(port & PIO_MASK);
-	else {
-#ifndef CONFIG_IXP4XX_INDIRECT_PCI
-		return le32_to_cpu((__force __le32)__raw_readl(addr));
-#else
-		return (unsigned int)__indirect_readl(addr);
-#endif
-	}
-}
-
-#define	ioread32_rep(p, v, c)		ioread32_rep(p, v, c)
-static inline void ioread32_rep(const void __iomem *addr, void *vaddr,
-				u32 count)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		insl(port & PIO_MASK, vaddr, count);
-	else
-#ifndef	CONFIG_IXP4XX_INDIRECT_PCI
-		__raw_readsl(addr, vaddr, count);
-#else
-		__indirect_readsl(addr, vaddr, count);
-#endif
-}
-
-#define	iowrite8(v, p)			iowrite8(v, p)
-static inline void iowrite8(u8 value, void __iomem *addr)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		outb(value, port & PIO_MASK);
-	else
-#ifndef CONFIG_IXP4XX_INDIRECT_PCI
-		__raw_writeb(value, addr);
-#else
-		__indirect_writeb(value, addr);
-#endif
-}
-
-#define	iowrite8_rep(p, v, c)		iowrite8_rep(p, v, c)
-static inline void iowrite8_rep(void __iomem *addr, const void *vaddr,
-				u32 count)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		outsb(port & PIO_MASK, vaddr, count);
-	else
-#ifndef CONFIG_IXP4XX_INDIRECT_PCI
-		__raw_writesb(addr, vaddr, count);
-#else
-		__indirect_writesb(addr, vaddr, count);
-#endif
-}
-
-#define	iowrite16(v, p)			iowrite16(v, p)
-static inline void iowrite16(u16 value, void __iomem *addr)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		outw(value, port & PIO_MASK);
-	else
-#ifndef CONFIG_IXP4XX_INDIRECT_PCI
-		__raw_writew(cpu_to_le16(value), addr);
-#else
-		__indirect_writew(value, addr);
-#endif
-}
-
-#define	iowrite16_rep(p, v, c)		iowrite16_rep(p, v, c)
-static inline void iowrite16_rep(void __iomem *addr, const void *vaddr,
-				 u32 count)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		outsw(port & PIO_MASK, vaddr, count);
-	else
-#ifndef CONFIG_IXP4XX_INDIRECT_PCI
-		__raw_writesw(addr, vaddr, count);
-#else
-		__indirect_writesw(addr, vaddr, count);
-#endif
-}
-
-#define	iowrite32(v, p)			iowrite32(v, p)
-static inline void iowrite32(u32 value, void __iomem *addr)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		outl(value, port & PIO_MASK);
-	else
-#ifndef CONFIG_IXP4XX_INDIRECT_PCI
-		__raw_writel((u32 __force)cpu_to_le32(value), addr);
-#else
-		__indirect_writel(value, addr);
-#endif
-}
-
-#define	iowrite32_rep(p, v, c)		iowrite32_rep(p, v, c)
-static inline void iowrite32_rep(void __iomem *addr, const void *vaddr,
-				 u32 count)
-{
-	unsigned long port = (unsigned long __force)addr;
-	if (__is_io_address(port))
-		outsl(port & PIO_MASK, vaddr, count);
-	else
-#ifndef CONFIG_IXP4XX_INDIRECT_PCI
-		__raw_writesl(addr, vaddr, count);
-#else
-		__indirect_writesl(addr, vaddr, count);
-#endif
-}
-
-#define ioport_map(port, nr) ioport_map(port, nr)
-static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
-{
-	return ((void __iomem*)((port) + PIO_OFFSET));
-}
-#define	ioport_unmap(addr) ioport_unmap(addr)
-static inline void ioport_unmap(void __iomem *addr)
-{
-}
-#endif /* CONFIG_PCI */
-
-#endif /* __ASM_ARM_ARCH_IO_H */