xref: /openbmc/linux/arch/powerpc/platforms/embedded6xx/mpc10x.h (revision 33d71d26)

/*
 * Common routines for the Motorola SPS MPC106/8240/107 Host bridge/Mem
 * ctlr/EPIC/etc.
 *
 * Author: Mark A. Greer
 *         mgreer@mvista.com
 *
 * 2001 (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.
 */
#ifndef __PPC_KERNEL_MPC10X_H
#define __PPC_KERNEL_MPC10X_H

#include <linux/pci_ids.h>
#include <asm/pci-bridge.h>

/*
 * The values here don't completely map everything but should work in most
 * cases.
 *
 * MAP A (PReP Map)
 *   Processor: 0x80000000 - 0x807fffff -> PCI I/O: 0x00000000 - 0x007fffff
 *   Processor: 0xc0000000 - 0xdfffffff -> PCI MEM: 0x00000000 - 0x1fffffff
 *   PCI MEM:   0x80000000 -> Processor System Memory: 0x00000000
 *   EUMB mapped to: ioremap_base - 0x00100000 (ioremap_base - 1 MB)
 *
 * MAP B (CHRP Map)
 *   Processor: 0xfe000000 - 0xfebfffff -> PCI I/O: 0x00000000 - 0x00bfffff
 *   Processor: 0x80000000 - 0xbfffffff -> PCI MEM: 0x80000000 - 0xbfffffff
 *   PCI MEM:   0x00000000 -> Processor System Memory: 0x00000000
 *   EUMB mapped to: ioremap_base - 0x00100000 (ioremap_base - 1 MB)
 */

/*
 * Define the vendor/device IDs for the various bridges--should be added to
 * <linux/pci_ids.h>
 */
#define	MPC10X_BRIDGE_106	((PCI_DEVICE_ID_MOTOROLA_MPC106 << 16) |  \
				  PCI_VENDOR_ID_MOTOROLA)
#define	MPC10X_BRIDGE_8240	((0x0003 << 16) | PCI_VENDOR_ID_MOTOROLA)
#define	MPC10X_BRIDGE_107	((0x0004 << 16) | PCI_VENDOR_ID_MOTOROLA)
#define	MPC10X_BRIDGE_8245	((0x0006 << 16) | PCI_VENDOR_ID_MOTOROLA)

/* Define the type of map to use */
#define	MPC10X_MEM_MAP_A		1
#define	MPC10X_MEM_MAP_B		2

/* Map A (PReP Map) Defines */
#define	MPC10X_MAPA_CNFG_ADDR		0x80000cf8
#define	MPC10X_MAPA_CNFG_DATA		0x80000cfc

#define MPC10X_MAPA_ISA_IO_BASE		0x80000000
#define MPC10X_MAPA_ISA_MEM_BASE	0xc0000000
#define	MPC10X_MAPA_DRAM_OFFSET		0x80000000

#define	MPC10X_MAPA_PCI_INTACK_ADDR	0xbffffff0
#define	MPC10X_MAPA_PCI_IO_START	0x00000000
#define	MPC10X_MAPA_PCI_IO_END	       (0x00800000 - 1)
#define	MPC10X_MAPA_PCI_MEM_START	0x00000000
#define	MPC10X_MAPA_PCI_MEM_END	       (0x20000000 - 1)

#define	MPC10X_MAPA_PCI_MEM_OFFSET	(MPC10X_MAPA_ISA_MEM_BASE -	\
					 MPC10X_MAPA_PCI_MEM_START)

/* Map B (CHRP Map) Defines */
#define	MPC10X_MAPB_CNFG_ADDR		0xfec00000
#define	MPC10X_MAPB_CNFG_DATA		0xfee00000

#define MPC10X_MAPB_ISA_IO_BASE		0xfe000000
#define MPC10X_MAPB_ISA_MEM_BASE	0x80000000
#define	MPC10X_MAPB_DRAM_OFFSET		0x00000000

#define	MPC10X_MAPB_PCI_INTACK_ADDR	0xfef00000
#define	MPC10X_MAPB_PCI_IO_START	0x00000000
#define	MPC10X_MAPB_PCI_IO_END	       (0x00c00000 - 1)
#define	MPC10X_MAPB_PCI_MEM_START	0x80000000
#define	MPC10X_MAPB_PCI_MEM_END	       (0xc0000000 - 1)

#define	MPC10X_MAPB_PCI_MEM_OFFSET	(MPC10X_MAPB_ISA_MEM_BASE -	\
					 MPC10X_MAPB_PCI_MEM_START)

/* Set hose members to values appropriate for the mem map used */
#define	MPC10X_SETUP_HOSE(hose, map) {					\
	(hose)->pci_mem_offset = MPC10X_MAP##map##_PCI_MEM_OFFSET;	\
	(hose)->io_space.start = MPC10X_MAP##map##_PCI_IO_START;	\
	(hose)->io_space.end = MPC10X_MAP##map##_PCI_IO_END;		\
	(hose)->mem_space.start = MPC10X_MAP##map##_PCI_MEM_START;	\
	(hose)->mem_space.end = MPC10X_MAP##map##_PCI_MEM_END;		\
	(hose)->io_base_virt = (void *)MPC10X_MAP##map##_ISA_IO_BASE;	\
}


/* Miscellaneous Configuration register offsets */
#define	MPC10X_CFG_PIR_REG		0x09
#define	MPC10X_CFG_PIR_HOST_BRIDGE	0x00
#define	MPC10X_CFG_PIR_AGENT		0x01

#define	MPC10X_CFG_EUMBBAR		0x78

#define	MPC10X_CFG_PICR1_REG		0xa8
#define	MPC10X_CFG_PICR1_ADDR_MAP_MASK	0x00010000
#define	MPC10X_CFG_PICR1_ADDR_MAP_A	0x00010000
#define	MPC10X_CFG_PICR1_ADDR_MAP_B	0x00000000
#define	MPC10X_CFG_PICR1_SPEC_PCI_RD	0x00000004
#define	MPC10X_CFG_PICR1_ST_GATH_EN	0x00000040

#define	MPC10X_CFG_PICR2_REG		0xac
#define	MPC10X_CFG_PICR2_COPYBACK_OPT	0x00000001

#define	MPC10X_CFG_MAPB_OPTIONS_REG	0xe0
#define	MPC10X_CFG_MAPB_OPTIONS_CFAE	0x80	/* CPU_FD_ALIAS_EN */
#define	MPC10X_CFG_MAPB_OPTIONS_PFAE	0x40	/* PCI_FD_ALIAS_EN */
#define	MPC10X_CFG_MAPB_OPTIONS_DR	0x20	/* DLL_RESET */
#define	MPC10X_CFG_MAPB_OPTIONS_PCICH	0x08	/* PCI_COMPATIBILITY_HOLE */
#define	MPC10X_CFG_MAPB_OPTIONS_PROCCH	0x04	/* PROC_COMPATIBILITY_HOLE */

/* Define offsets for the memory controller registers in the config space */
#define MPC10X_MCTLR_MEM_START_1	0x80	/* Banks 0-3 */
#define MPC10X_MCTLR_MEM_START_2	0x84	/* Banks 4-7 */
#define MPC10X_MCTLR_EXT_MEM_START_1	0x88	/* Banks 0-3 */
#define MPC10X_MCTLR_EXT_MEM_START_2	0x8c	/* Banks 4-7 */

#define MPC10X_MCTLR_MEM_END_1		0x90	/* Banks 0-3 */
#define MPC10X_MCTLR_MEM_END_2		0x94	/* Banks 4-7 */
#define MPC10X_MCTLR_EXT_MEM_END_1	0x98	/* Banks 0-3 */
#define MPC10X_MCTLR_EXT_MEM_END_2	0x9c	/* Banks 4-7 */

#define MPC10X_MCTLR_MEM_BANK_ENABLES	0xa0

/* Define some offset in the EUMB */
#define	MPC10X_EUMB_SIZE		0x00100000 /* Total EUMB size (1MB) */

#define MPC10X_EUMB_MU_OFFSET		0x00000000 /* Msg Unit reg offset */
#define MPC10X_EUMB_MU_SIZE		0x00001000 /* Msg Unit reg size */
#define MPC10X_EUMB_DMA_OFFSET		0x00001000 /* DMA Unit reg offset */
#define MPC10X_EUMB_DMA_SIZE		0x00001000 /* DMA Unit reg size  */
#define MPC10X_EUMB_ATU_OFFSET		0x00002000 /* Addr xlate reg offset */
#define MPC10X_EUMB_ATU_SIZE		0x00001000 /* Addr xlate reg size  */
#define MPC10X_EUMB_I2C_OFFSET		0x00003000 /* I2C Unit reg offset */
#define MPC10X_EUMB_I2C_SIZE		0x00001000 /* I2C Unit reg size  */
#define MPC10X_EUMB_DUART_OFFSET	0x00004000 /* DUART Unit reg offset (8245) */
#define MPC10X_EUMB_DUART_SIZE		0x00001000 /* DUART Unit reg size (8245) */
#define	MPC10X_EUMB_EPIC_OFFSET		0x00040000 /* EPIC offset in EUMB */
#define	MPC10X_EUMB_EPIC_SIZE		0x00030000 /* EPIC size */
#define MPC10X_EUMB_PM_OFFSET		0x000fe000 /* Performance Monitor reg offset (8245) */
#define MPC10X_EUMB_PM_SIZE		0x00001000 /* Performance Monitor reg size (8245) */
#define MPC10X_EUMB_WP_OFFSET		0x000ff000 /* Data path diagnostic, watchpoint reg offset */
#define MPC10X_EUMB_WP_SIZE		0x00001000 /* Data path diagnostic, watchpoint reg size */

/*
 * Define some recommended places to put the EUMB regs.
 * For both maps, recommend putting the EUMB from 0xeff00000 to 0xefffffff.
 */
extern unsigned long			ioremap_base;
#define	MPC10X_MAPA_EUMB_BASE		(ioremap_base - MPC10X_EUMB_SIZE)
#define	MPC10X_MAPB_EUMB_BASE		MPC10X_MAPA_EUMB_BASE

enum ppc_sys_devices {
	MPC10X_IIC1,
	MPC10X_DMA0,
	MPC10X_DMA1,
	MPC10X_UART0,
	MPC10X_UART1,
	NUM_PPC_SYS_DEVS,
};

int mpc10x_bridge_init(struct pci_controller *hose,
		       uint current_map,
		       uint new_map,
		       uint phys_eumb_base);
unsigned long mpc10x_get_mem_size(uint mem_map);
int mpc10x_enable_store_gathering(struct pci_controller *hose);
int mpc10x_disable_store_gathering(struct pci_controller *hose);

/* For MPC107 boards that use the built-in openpic */
void mpc10x_set_openpic(void);

#endif	/* __PPC_KERNEL_MPC10X_H */