ARM: remove ks8695 platform

ks8695 is an older SoC originally made by Kendin, which was later acquired
by Micrel, and subsequently by Microchip.

The platform port was originally contributed by Andrew Victor and Ben
Dooks, and later maintained by Greg Ungerer.

When I recently submitted cleanups, but Greg noted that the platform no
longer boots and nobody is using it any more, we decided to remove it.

Link: https://lore.kernel.org/r/20190809202749.742267-2-arnd@arndb.de
Cc: Andrew Victor <linux@maxim.org.za>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Link: https://wikidevi.com/wiki/Micrel
Link: https://lore.kernel.org/linux-arm-kernel/2bc41895-d4f9-896c-0726-0b2862fcbf25@kernel.org/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Ungerer <gerg@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 247 deletions

diff --git a/arch/arm/mach-ks8695/pci.c b/arch/arm/mach-ks8695/pci.c
deleted file mode 100644
index 83f330bf07dd..000000000000
--- a/arch/arm/mach-ks8695/pci.c
+++ /dev/null
@@ -1,247 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * arch/arm/mach-ks8695/pci.c
- *
- *  Copyright (C) 2003, Micrel Semiconductors
- *  Copyright (C) 2006, Greg Ungerer <gerg@snapgear.com>
- *  Copyright (C) 2006, Ben Dooks
- *  Copyright (C) 2007, Andrew Victor
- */
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-
-#include <asm/signal.h>
-#include <asm/mach/pci.h>
-#include <mach/hardware.h>
-
-#include "devices.h"
-#include "regs-pci.h"
-
-
-static int pci_dbg;
-
-static void ks8695_pci_setupconfig(unsigned int bus_nr, unsigned int devfn, unsigned int where)
-{
-	unsigned long pbca;
-
-	pbca = PBCA_ENABLE | (where & ~3);
-	pbca |= PCI_SLOT(devfn) << 11 ;
-	pbca |= PCI_FUNC(devfn) << 8;
-	pbca |= bus_nr << 16;
-
-	if (bus_nr == 0) {
-		/* use Type-0 transaction */
-		__raw_writel(pbca, KS8695_PCI_VA + KS8695_PBCA);
-	} else {
-		/* use Type-1 transaction */
-		__raw_writel(pbca | PBCA_TYPE1, KS8695_PCI_VA + KS8695_PBCA);
-	}
-}
-
-static void __iomem *ks8695_pci_map_bus(struct pci_bus *bus, unsigned int devfn,
-					int where)
-{
-	ks8695_pci_setupconfig(bus->number, devfn, where);
-	return KS8695_PCI_VA +  KS8695_PBCD;
-}
-
-static void ks8695_local_writeconfig(int where, u32 value)
-{
-	ks8695_pci_setupconfig(0, 0, where);
-	__raw_writel(value, KS8695_PCI_VA + KS8695_PBCD);
-}
-
-static struct pci_ops ks8695_pci_ops = {
-	.map_bus = ks8695_pci_map_bus,
-	.read	= pci_generic_config_read32,
-	.write	= pci_generic_config_write32,
-};
-
-static struct resource pci_mem = {
-	.name	= "PCI Memory space",
-	.start	= KS8695_PCIMEM_PA,
-	.end	= KS8695_PCIMEM_PA + (KS8695_PCIMEM_SIZE - 1),
-	.flags	= IORESOURCE_MEM,
-};
-
-static struct resource pci_io = {
-	.name	= "PCI IO space",
-	.start	= KS8695_PCIIO_PA,
-	.end	= KS8695_PCIIO_PA + (KS8695_PCIIO_SIZE - 1),
-	.flags	= IORESOURCE_IO,
-};
-
-static int __init ks8695_pci_setup(int nr, struct pci_sys_data *sys)
-{
-	if (nr > 0)
-		return 0;
-
-	request_resource(&iomem_resource, &pci_mem);
-	request_resource(&ioport_resource, &pci_io);
-
-	pci_add_resource_offset(&sys->resources, &pci_io, sys->io_offset);
-	pci_add_resource_offset(&sys->resources, &pci_mem, sys->mem_offset);
-
-	/* Assign and enable processor bridge */
-	ks8695_local_writeconfig(PCI_BASE_ADDRESS_0, KS8695_PCIMEM_PA);
-
-	/* Enable bus-master & Memory Space access */
-	ks8695_local_writeconfig(PCI_COMMAND, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
-
-	/* Set cache-line size & latency. */
-	ks8695_local_writeconfig(PCI_CACHE_LINE_SIZE, (32 << 8) | (L1_CACHE_BYTES / sizeof(u32)));
-
-	/* Reserve PCI memory space for PCI-AHB resources */
-	if (!request_mem_region(KS8695_PCIMEM_PA, SZ_64M, "PCI-AHB Bridge")) {
-		printk(KERN_ERR "Cannot allocate PCI-AHB Bridge memory.\n");
-		return -EBUSY;
-	}
-
-	return 1;
-}
-
-static inline unsigned int size_mask(unsigned long size)
-{
-	return (~size) + 1;
-}
-
-static int ks8695_pci_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
-{
-	unsigned long pc = instruction_pointer(regs);
-	unsigned long instr = *(unsigned long *)pc;
-	unsigned long cmdstat;
-
-	cmdstat = __raw_readl(KS8695_PCI_VA + KS8695_CRCFCS);
-
-	printk(KERN_ERR "PCI abort: address = 0x%08lx fsr = 0x%03x PC = 0x%08lx LR = 0x%08lx [%s%s%s%s%s]\n",
-		addr, fsr, regs->ARM_pc, regs->ARM_lr,
-		cmdstat & (PCI_STATUS_SIG_TARGET_ABORT << 16) ? "GenTarget" : " ",
-		cmdstat & (PCI_STATUS_REC_TARGET_ABORT << 16) ? "RecvTarget" : " ",
-		cmdstat & (PCI_STATUS_REC_MASTER_ABORT << 16) ? "MasterAbort" : " ",
-		cmdstat & (PCI_STATUS_SIG_SYSTEM_ERROR << 16) ? "SysError" : " ",
-		cmdstat & (PCI_STATUS_DETECTED_PARITY << 16)  ? "Parity" : " "
-	);
-
-	__raw_writel(cmdstat, KS8695_PCI_VA + KS8695_CRCFCS);
-
-	/*
-	 * If the instruction being executed was a read,
-	 * make it look like it read all-ones.
-	 */
-	if ((instr & 0x0c100000) == 0x04100000) {
-		int reg = (instr >> 12) & 15;
-		unsigned long val;
-
-		if (instr & 0x00400000)
-			val = 255;
-		else
-			val = -1;
-
-		regs->uregs[reg] = val;
-		regs->ARM_pc += 4;
-		return 0;
-	}
-
-	if ((instr & 0x0e100090) == 0x00100090) {
-		int reg = (instr >> 12) & 15;
-
-		regs->uregs[reg] = -1;
-		regs->ARM_pc += 4;
-		return 0;
-	}
-
-	return 1;
-}
-
-static void __init ks8695_pci_preinit(void)
-{
-	/* make software reset to avoid freeze if PCI bus was messed up */
-	__raw_writel(0x80000000, KS8695_PCI_VA + KS8695_PBCS);
-
-	/* stage 1 initialization, subid, subdevice = 0x0001 */
-	__raw_writel(0x00010001, KS8695_PCI_VA + KS8695_CRCSID);
-
-	/* stage 2 initialization */
-	/* prefetch limits with 16 words, retry enable */
-	__raw_writel(0x40000000, KS8695_PCI_VA + KS8695_PBCS);
-
-	/* configure memory mapping */
-	__raw_writel(KS8695_PCIMEM_PA, KS8695_PCI_VA + KS8695_PMBA);
-	__raw_writel(size_mask(KS8695_PCIMEM_SIZE), KS8695_PCI_VA + KS8695_PMBAM);
-	__raw_writel(KS8695_PCIMEM_PA, KS8695_PCI_VA + KS8695_PMBAT);
-	__raw_writel(0, KS8695_PCI_VA + KS8695_PMBAC);
-
-	/* configure IO mapping */
-	__raw_writel(KS8695_PCIIO_PA, KS8695_PCI_VA + KS8695_PIOBA);
-	__raw_writel(size_mask(KS8695_PCIIO_SIZE), KS8695_PCI_VA + KS8695_PIOBAM);
-	__raw_writel(KS8695_PCIIO_PA, KS8695_PCI_VA + KS8695_PIOBAT);
-	__raw_writel(0, KS8695_PCI_VA + KS8695_PIOBAC);
-
-	/* hook in fault handlers */
-	hook_fault_code(8, ks8695_pci_fault, SIGBUS, 0, "external abort on non-linefetch");
-	hook_fault_code(10, ks8695_pci_fault, SIGBUS, 0, "external abort on non-linefetch");
-}
-
-static void ks8695_show_pciregs(void)
-{
-	if (!pci_dbg)
-		return;
-
-	printk(KERN_INFO "PCI: CRCFID = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_CRCFID));
-	printk(KERN_INFO "PCI: CRCFCS = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_CRCFCS));
-	printk(KERN_INFO "PCI: CRCFRV = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_CRCFRV));
-	printk(KERN_INFO "PCI: CRCFLT = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_CRCFLT));
-	printk(KERN_INFO "PCI: CRCBMA = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_CRCBMA));
-	printk(KERN_INFO "PCI: CRCSID = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_CRCSID));
-	printk(KERN_INFO "PCI: CRCFIT = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_CRCFIT));
-
-	printk(KERN_INFO "PCI: PBM    = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_PBM));
-	printk(KERN_INFO "PCI: PBCS   = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_PBCS));
-
-	printk(KERN_INFO "PCI: PMBA   = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_PMBA));
-	printk(KERN_INFO "PCI: PMBAC  = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_PMBAC));
-	printk(KERN_INFO "PCI: PMBAM  = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_PMBAM));
-	printk(KERN_INFO "PCI: PMBAT  = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_PMBAT));
-
-	printk(KERN_INFO "PCI: PIOBA  = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_PIOBA));
-	printk(KERN_INFO "PCI: PIOBAC = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_PIOBAC));
-	printk(KERN_INFO "PCI: PIOBAM = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_PIOBAM));
-	printk(KERN_INFO "PCI: PIOBAT = %08x\n", __raw_readl(KS8695_PCI_VA + KS8695_PIOBAT));
-}
-
-
-static struct hw_pci ks8695_pci __initdata = {
-	.nr_controllers	= 1,
-	.ops		= &ks8695_pci_ops,
-	.preinit	= ks8695_pci_preinit,
-	.setup		= ks8695_pci_setup,
-	.postinit	= NULL,
-	.map_irq	= NULL,
-};
-
-void __init ks8695_init_pci(struct ks8695_pci_cfg *cfg)
-{
-	if (__raw_readl(KS8695_PCI_VA + KS8695_CRCFRV) & CFRV_GUEST) {
-		printk("PCI: KS8695 in guest mode, not initialising\n");
-		return;
-	}
-
-	pcibios_min_io = 0;
-	pcibios_min_mem = 0;
-
-	printk(KERN_INFO "PCI: Initialising\n");
-	ks8695_show_pciregs();
-
-	/* set Mode */
-	__raw_writel(cfg->mode << 29, KS8695_PCI_VA + KS8695_PBM);
-
-	ks8695_pci.map_irq = cfg->map_irq;	/* board-specific map_irq method */
-
-	pci_common_init(&ks8695_pci);
-}