[ARM] 3388/1: ixp23xx: add core ixp23xx support

Patch from Lennert Buytenhek

This patch adds support for the Intel ixp23xx series of CPUs.  The
ixp23xx is an XSC3 based CPU with 512K of L2 cache, a 64bit 66MHz PCI
interface, two DDR RAM interfaces, QDR RAM interfaces, two gigabit
MACs, two 10/100 MACs, expansion bus, four microengines, a Media and
Switch Fabric unit almost identical to the one on the ixp2400, two
xscale (8250ish) UARTs and a bunch of other stuff.

This patch adds the core ixp23xx support code, and support for the
ADI Engineering Roadrunner, Intel IXDP2351, and IP Fabrics Double
Espresso platforms.

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 306 insertions, 0 deletions

diff --git a/include/asm-arm/arch-ixp23xx/ixp23xx.h b/include/asm-arm/arch-ixp23xx/ixp23xx.h
new file mode 100644
index 00000000000..e49e1ca61b1
--- /dev/null
+++ b/include/asm-arm/arch-ixp23xx/ixp23xx.h
@@ -0,0 +1,306 @@
+/*
+ * include/asm-arm/arch-ixp23xx/ixp23xx.h
+ *
+ * Register definitions for IXP23XX
+ *
+ * Copyright (C) 2003-2005 Intel Corporation.
+ * Copyright (C) 2005 MontaVista Software, Inc.
+ *
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_IXP23XX_H
+#define __ASM_ARCH_IXP23XX_H
+
+/*
+ * IXP2300 linux memory map:
+ *
+ * virt		phys		size
+ * fffd0000	a0000000	64K		XSI2CPP_CSR
+ * fffc0000	c4000000	4K		EXP_CFG
+ * fff00000	c8000000	64K		PERIPHERAL
+ * fe000000	1c0000000	16M		CAP_CSR
+ * fd000000	1c8000000	16M		MSF_CSR
+ * fb000000			16M		---
+ * fa000000	1d8000000	32M		PCI_IO
+ * f8000000	1da000000	32M		PCI_CFG
+ * f6000000	1de000000	32M		PCI_CREG
+ * f4000000			32M		---
+ * f0000000	1e0000000	64M		PCI_MEM
+ * e[c-f]000000					per-platform mappings
+ */
+
+
+/****************************************************************************
+ * Static mappings.
+ ****************************************************************************/
+#define IXP23XX_XSI2CPP_CSR_PHYS	0xa0000000
+#define IXP23XX_XSI2CPP_CSR_VIRT	0xfffd0000
+#define IXP23XX_XSI2CPP_CSR_SIZE	0x00010000
+
+#define IXP23XX_EXP_CFG_PHYS		0xc4000000
+#define IXP23XX_EXP_CFG_VIRT		0xfffc0000
+#define IXP23XX_EXP_CFG_SIZE		0x00001000
+
+#define IXP23XX_PERIPHERAL_PHYS		0xc8000000
+#define IXP23XX_PERIPHERAL_VIRT		0xfff00000
+#define IXP23XX_PERIPHERAL_SIZE		0x00010000
+
+#define IXP23XX_CAP_CSR_PHYS		0x1c0000000ULL
+#define IXP23XX_CAP_CSR_VIRT		0xfe000000
+#define IXP23XX_CAP_CSR_SIZE		0x01000000
+
+#define IXP23XX_MSF_CSR_PHYS		0x1c8000000ULL
+#define IXP23XX_MSF_CSR_VIRT		0xfd000000
+#define IXP23XX_MSF_CSR_SIZE		0x01000000
+
+#define IXP23XX_PCI_IO_PHYS		0x1d8000000ULL
+#define IXP23XX_PCI_IO_VIRT		0xfa000000
+#define IXP23XX_PCI_IO_SIZE		0x02000000
+
+#define IXP23XX_PCI_CFG_PHYS		0x1da000000ULL
+#define IXP23XX_PCI_CFG_VIRT		0xf8000000
+#define IXP23XX_PCI_CFG_SIZE		0x02000000
+#define IXP23XX_PCI_CFG0_VIRT		IXP23XX_PCI_CFG_VIRT
+#define IXP23XX_PCI_CFG1_VIRT		(IXP23XX_PCI_CFG_VIRT + 0x01000000)
+
+#define IXP23XX_PCI_CREG_PHYS		0x1de000000ULL
+#define IXP23XX_PCI_CREG_VIRT		0xf6000000
+#define IXP23XX_PCI_CREG_SIZE		0x02000000
+#define IXP23XX_PCI_CSR_VIRT		(IXP23XX_PCI_CREG_VIRT + 0x01000000)
+
+#define IXP23XX_PCI_MEM_START		0xe0000000
+#define IXP23XX_PCI_MEM_PHYS		0x1e0000000ULL
+#define IXP23XX_PCI_MEM_VIRT		0xf0000000
+#define IXP23XX_PCI_MEM_SIZE		0x04000000
+
+
+/****************************************************************************
+ * XSI2CPP CSRs.
+ ****************************************************************************/
+#define IXP23XX_XSI2CPP_REG(x)		((volatile unsigned long *)(IXP23XX_XSI2CPP_CSR_VIRT + (x)))
+#define IXP23XX_CPP2XSI_CURR_XFER_REG3	IXP23XX_XSI2CPP_REG(0xf8)
+#define IXP23XX_CPP2XSI_ADDR_31		(1 << 19)
+#define IXP23XX_CPP2XSI_PSH_OFF		(1 << 20)
+#define IXP23XX_CPP2XSI_COH_OFF		(1 << 21)
+
+
+/****************************************************************************
+ * Expansion Bus Config.
+ ****************************************************************************/
+#define IXP23XX_EXP_CFG_REG(x)		((volatile unsigned long *)(IXP23XX_EXP_CFG_VIRT + (x)))
+#define IXP23XX_EXP_CS0			IXP23XX_EXP_CFG_REG(0x00)
+#define IXP23XX_EXP_CS1			IXP23XX_EXP_CFG_REG(0x04)
+#define IXP23XX_EXP_CS2			IXP23XX_EXP_CFG_REG(0x08)
+#define IXP23XX_EXP_CS3			IXP23XX_EXP_CFG_REG(0x0c)
+#define IXP23XX_EXP_CS4			IXP23XX_EXP_CFG_REG(0x10)
+#define IXP23XX_EXP_CS5			IXP23XX_EXP_CFG_REG(0x14)
+#define IXP23XX_EXP_CS6			IXP23XX_EXP_CFG_REG(0x18)
+#define IXP23XX_EXP_CS7			IXP23XX_EXP_CFG_REG(0x1c)
+#define IXP23XX_FLASH_WRITABLE		(0x2)
+#define IXP23XX_FLASH_BUS8		(0x1)
+
+#define IXP23XX_EXP_CFG0		IXP23XX_EXP_CFG_REG(0x20)
+#define IXP23XX_EXP_CFG1		IXP23XX_EXP_CFG_REG(0x24)
+#define IXP23XX_EXP_CFG0_MEM_MAP		(1 << 31)
+#define IXP23XX_EXP_CFG0_XSCALE_SPEED_SEL 	(3 << 22)
+#define IXP23XX_EXP_CFG0_XSCALE_SPEED_EN	(1 << 21)
+#define IXP23XX_EXP_CFG0_CPP_SPEED_SEL		(3 << 19)
+#define IXP23XX_EXP_CFG0_CPP_SPEED_EN		(1 << 18)
+#define IXP23XX_EXP_CFG0_PCI_SWIN		(3 << 16)
+#define IXP23XX_EXP_CFG0_PCI_DWIN		(3 << 14)
+#define IXP23XX_EXP_CFG0_PCI33_MODE		(1 << 13)
+#define IXP23XX_EXP_CFG0_QDR_SPEED_SEL		(1 << 12)
+#define IXP23XX_EXP_CFG0_CPP_DIV_SEL		(1 << 5)
+#define IXP23XX_EXP_CFG0_XSI_NOT_PRES		(1 << 4)
+#define IXP23XX_EXP_CFG0_PROM_BOOT		(1 << 3)
+#define IXP23XX_EXP_CFG0_PCI_ARB		(1 << 2)
+#define IXP23XX_EXP_CFG0_PCI_HOST		(1 << 1)
+#define IXP23XX_EXP_CFG0_FLASH_WIDTH		(1 << 0)
+
+#define IXP23XX_EXP_UNIT_FUSE		IXP23XX_EXP_CFG_REG(0x28)
+#define IXP23XX_EXP_MSF_MUX		IXP23XX_EXP_CFG_REG(0x30)
+
+#define IXP23XX_EXP_BUS_PHYS		0x90000000
+#define IXP23XX_EXP_BUS_WINDOW_SIZE	0x01000000
+
+#define IXP23XX_EXP_BUS_CS0_BASE	(IXP23XX_EXP_BUS_PHYS + 0x00000000)
+#define IXP23XX_EXP_BUS_CS1_BASE	(IXP23XX_EXP_BUS_PHYS + 0x01000000)
+#define IXP23XX_EXP_BUS_CS2_BASE	(IXP23XX_EXP_BUS_PHYS + 0x02000000)
+#define IXP23XX_EXP_BUS_CS3_BASE	(IXP23XX_EXP_BUS_PHYS + 0x03000000)
+#define IXP23XX_EXP_BUS_CS4_BASE	(IXP23XX_EXP_BUS_PHYS + 0x04000000)
+#define IXP23XX_EXP_BUS_CS5_BASE	(IXP23XX_EXP_BUS_PHYS + 0x05000000)
+#define IXP23XX_EXP_BUS_CS6_BASE	(IXP23XX_EXP_BUS_PHYS + 0x06000000)
+#define IXP23XX_EXP_BUS_CS7_BASE	(IXP23XX_EXP_BUS_PHYS + 0x07000000)
+
+
+/****************************************************************************
+ * Peripherals.
+ ****************************************************************************/
+#define IXP23XX_UART1_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0x0000)
+#define IXP23XX_UART2_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0x1000)
+#define IXP23XX_PMU_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0x2000)
+#define IXP23XX_INTC_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0x3000)
+#define IXP23XX_GPIO_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0x4000)
+#define IXP23XX_TIMER_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0x5000)
+#define IXP23XX_NPE0_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0x6000)
+#define IXP23XX_DSR_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0x7000)
+#define IXP23XX_NPE1_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0x8000)
+#define IXP23XX_ETH0_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0x9000)
+#define IXP23XX_ETH1_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0xA000)
+#define IXP23XX_GIG0_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0xB000)
+#define IXP23XX_GIG1_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0xC000)
+#define IXP23XX_DDRS_VIRT		(IXP23XX_PERIPHERAL_VIRT + 0xD000)
+
+#define IXP23XX_UART1_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0x0000)
+#define IXP23XX_UART2_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0x1000)
+#define IXP23XX_PMU_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0x2000)
+#define IXP23XX_INTC_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0x3000)
+#define IXP23XX_GPIO_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0x4000)
+#define IXP23XX_TIMER_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0x5000)
+#define IXP23XX_NPE0_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0x6000)
+#define IXP23XX_DSR_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0x7000)
+#define IXP23XX_NPE1_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0x8000)
+#define IXP23XX_ETH0_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0x9000)
+#define IXP23XX_ETH1_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0xA000)
+#define IXP23XX_GIG0_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0xB000)
+#define IXP23XX_GIG1_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0xC000)
+#define IXP23XX_DDRS_PHYS		(IXP23XX_PERIPHERAL_PHYS + 0xD000)
+
+
+/****************************************************************************
+ * Interrupt controller.
+ ****************************************************************************/
+#define IXP23XX_INTC_REG(x)		 ((volatile unsigned long *)(IXP23XX_INTC_VIRT + (x)))
+#define IXP23XX_INTR_ST1		IXP23XX_INTC_REG(0x00)
+#define IXP23XX_INTR_ST2		IXP23XX_INTC_REG(0x04)
+#define IXP23XX_INTR_ST3		IXP23XX_INTC_REG(0x08)
+#define IXP23XX_INTR_ST4		IXP23XX_INTC_REG(0x0c)
+#define IXP23XX_INTR_EN1		IXP23XX_INTC_REG(0x10)
+#define IXP23XX_INTR_EN2		IXP23XX_INTC_REG(0x14)
+#define IXP23XX_INTR_EN3		IXP23XX_INTC_REG(0x18)
+#define IXP23XX_INTR_EN4		IXP23XX_INTC_REG(0x1c)
+#define IXP23XX_INTR_SEL1		IXP23XX_INTC_REG(0x20)
+#define IXP23XX_INTR_SEL2		IXP23XX_INTC_REG(0x24)
+#define IXP23XX_INTR_SEL3		IXP23XX_INTC_REG(0x28)
+#define IXP23XX_INTR_SEL4		IXP23XX_INTC_REG(0x2c)
+#define IXP23XX_INTR_IRQ_ST1		IXP23XX_INTC_REG(0x30)
+#define IXP23XX_INTR_IRQ_ST2		IXP23XX_INTC_REG(0x34)
+#define IXP23XX_INTR_IRQ_ST3		IXP23XX_INTC_REG(0x38)
+#define IXP23XX_INTR_IRQ_ST4		IXP23XX_INTC_REG(0x3c)
+#define IXP23XX_INTR_IRQ_ENC_ST_OFFSET	0x54
+
+
+/****************************************************************************
+ * GPIO.
+ ****************************************************************************/
+#define IXP23XX_GPIO_REG(x)		((volatile unsigned long *)(IXP23XX_GPIO_VIRT + (x)))
+#define IXP23XX_GPIO_GPOUTR		IXP23XX_GPIO_REG(0x00)
+#define IXP23XX_GPIO_GPOER		IXP23XX_GPIO_REG(0x04)
+#define IXP23XX_GPIO_GPINR		IXP23XX_GPIO_REG(0x08)
+#define IXP23XX_GPIO_GPISR		IXP23XX_GPIO_REG(0x0c)
+#define IXP23XX_GPIO_GPIT1R		IXP23XX_GPIO_REG(0x10)
+#define IXP23XX_GPIO_GPIT2R		IXP23XX_GPIO_REG(0x14)
+#define IXP23XX_GPIO_GPCLKR		IXP23XX_GPIO_REG(0x18)
+#define IXP23XX_GPIO_GPDBSELR 		IXP23XX_GPIO_REG(0x1c)
+
+#define IXP23XX_GPIO_STYLE_MASK		0x7
+#define IXP23XX_GPIO_STYLE_ACTIVE_HIGH	0x0
+#define IXP23XX_GPIO_STYLE_ACTIVE_LOW	0x1
+#define IXP23XX_GPIO_STYLE_RISING_EDGE	0x2
+#define IXP23XX_GPIO_STYLE_FALLING_EDGE	0x3
+#define IXP23XX_GPIO_STYLE_TRANSITIONAL	0x4
+
+#define IXP23XX_GPIO_STYLE_SIZE		3
+
+
+/****************************************************************************
+ * Timer.
+ ****************************************************************************/
+#define IXP23XX_TIMER_REG(x)		((volatile unsigned long *)(IXP23XX_TIMER_VIRT + (x)))
+#define IXP23XX_TIMER_CONT		IXP23XX_TIMER_REG(0x00)
+#define IXP23XX_TIMER1_TIMESTAMP	IXP23XX_TIMER_REG(0x04)
+#define IXP23XX_TIMER1_RELOAD		IXP23XX_TIMER_REG(0x08)
+#define IXP23XX_TIMER2_TIMESTAMP	IXP23XX_TIMER_REG(0x0c)
+#define IXP23XX_TIMER2_RELOAD		IXP23XX_TIMER_REG(0x10)
+#define IXP23XX_TIMER_WDOG		IXP23XX_TIMER_REG(0x14)
+#define IXP23XX_TIMER_WDOG_EN		IXP23XX_TIMER_REG(0x18)
+#define IXP23XX_TIMER_WDOG_KEY		IXP23XX_TIMER_REG(0x1c)
+#define IXP23XX_TIMER_WDOG_KEY_MAGIC	0x482e
+#define IXP23XX_TIMER_STATUS		IXP23XX_TIMER_REG(0x20)
+#define IXP23XX_TIMER_SOFT_RESET	IXP23XX_TIMER_REG(0x24)
+#define IXP23XX_TIMER_SOFT_RESET_EN	IXP23XX_TIMER_REG(0x28)
+
+#define IXP23XX_TIMER_ENABLE		(1 << 0)
+#define IXP23XX_TIMER_ONE_SHOT		(1 << 1)
+/* Low order bits of reload value ignored */
+#define IXP23XX_TIMER_RELOAD_MASK	(0x3)
+#define IXP23XX_TIMER_DISABLED		(0x0)
+#define IXP23XX_TIMER1_INT_PEND		(1 << 0)
+#define IXP23XX_TIMER2_INT_PEND		(1 << 1)
+#define IXP23XX_TIMER_STATUS_TS_PEND	(1 << 2)
+#define IXP23XX_TIMER_STATUS_WDOG_PEND	(1 << 3)
+#define IXP23XX_TIMER_STATUS_WARM_RESET	(1 << 4)
+
+
+/****************************************************************************
+ * CAP CSRs.
+ ****************************************************************************/
+#define IXP23XX_GLOBAL_REG(x)		((volatile unsigned long *)(IXP23XX_CAP_CSR_VIRT + 0x4a00 + (x)))
+#define IXP23XX_PROD_IDG		IXP23XX_GLOBAL_REG(0x00)
+#define IXP23XX_MISC_CONTROL		IXP23XX_GLOBAL_REG(0x04)
+#define IXP23XX_MSF_CLK_CNTRL		IXP23XX_GLOBAL_REG(0x08)
+#define IXP23XX_RESET0			IXP23XX_GLOBAL_REG(0x0c)
+#define IXP23XX_RESET1			IXP23XX_GLOBAL_REG(0x10)
+#define IXP23XX_STRAP_OPTIONS		IXP23XX_GLOBAL_REG(0x18)
+
+#define IXP23XX_ENABLE_WATCHDOG		(1 << 24)
+#define IXP23XX_SHPC_INIT_COMP		(1 << 21)
+#define IXP23XX_RST_ALL			(1 << 16)
+#define IXP23XX_RESET_PCI		(1 << 2)
+#define IXP23XX_PCI_UNIT_RESET		(1 << 1)
+#define IXP23XX_XSCALE_RESET		(1 << 0)
+
+
+/****************************************************************************
+ * PCI CSRs.
+ ****************************************************************************/
+#define IXP23XX_PCI_CREG(x)		((volatile unsigned long *)(IXP23XX_PCI_CREG_VIRT + (x)))
+#define IXP23XX_PCI_CMDSTAT		IXP23XX_PCI_CREG(0x04)
+#define IXP23XX_PCI_SRAM_BAR		IXP23XX_PCI_CREG(0x14)
+#define IXP23XX_PCI_SDRAM_BAR		IXP23XX_PCI_CREG(0x18)
+
+
+#define IXP23XX_PCI_CSR(x)		((volatile unsigned long *)(IXP23XX_PCI_CREG_VIRT + 0x01000000 + (x)))
+#define IXP23XX_PCI_OUT_INT_STATUS	IXP23XX_PCI_CSR(0x0030)
+#define IXP23XX_PCI_OUT_INT_MASK	IXP23XX_PCI_CSR(0x0034)
+#define IXP23XX_PCI_SRAM_BASE_ADDR_MASK IXP23XX_PCI_CSR(0x00fc)
+#define IXP23XX_PCI_DRAM_BASE_ADDR_MASK IXP23XX_PCI_CSR(0x0100)
+#define IXP23XX_PCI_CONTROL		IXP23XX_PCI_CSR(0x013c)
+#define IXP23XX_PCI_ADDR_EXT		IXP23XX_PCI_CSR(0x0140)
+#define IXP23XX_PCI_ME_PUSH_STATUS	IXP23XX_PCI_CSR(0x0148)
+#define IXP23XX_PCI_ME_PUSH_EN		IXP23XX_PCI_CSR(0x014c)
+#define IXP23XX_PCI_ERR_STATUS		IXP23XX_PCI_CSR(0x0150)
+#define IXP23XX_PCI_ERROR_STATUS	IXP23XX_PCI_CSR(0x0150)
+#define IXP23XX_PCI_ERR_ENABLE		IXP23XX_PCI_CSR(0x0154)
+#define IXP23XX_PCI_XSCALE_INT_STATUS	IXP23XX_PCI_CSR(0x0158)
+#define IXP23XX_PCI_XSCALE_INT_ENABLE	IXP23XX_PCI_CSR(0x015c)
+#define IXP23XX_PCI_CPP_ADDR_BITS	IXP23XX_PCI_CSR(0x0160)
+
+
+#ifndef __ASSEMBLY__
+/*
+ * Is system memory on the XSI or CPP bus?
+ */
+static inline unsigned ixp23xx_cpp_boot(void)
+{
+	return (*IXP23XX_EXP_CFG0 & IXP23XX_EXP_CFG0_XSI_NOT_PRES);
+}
+#endif
+
+
+#endif