1 /*
2  * Common routines for the Motorola SPS MPC106/8240/107 Host bridge/Mem
3  * ctlr/EPIC/etc.
4  *
5  * Author: Mark A. Greer
6  *         mgreer@mvista.com
7  *
8  * 2001 (c) MontaVista, Software, Inc.  This file is licensed under
9  * the terms of the GNU General Public License version 2.  This program
10  * is licensed "as is" without any warranty of any kind, whether express
11  * or implied.
12  */
13 #ifndef __PPC_KERNEL_MPC10X_H
14 #define __PPC_KERNEL_MPC10X_H
15 
16 #include <linux/pci_ids.h>
17 #include <asm/pci-bridge.h>
18 
19 /*
20  * The values here don't completely map everything but should work in most
21  * cases.
22  *
23  * MAP A (PReP Map)
24  *   Processor: 0x80000000 - 0x807fffff -> PCI I/O: 0x00000000 - 0x007fffff
25  *   Processor: 0xc0000000 - 0xdfffffff -> PCI MEM: 0x00000000 - 0x1fffffff
26  *   PCI MEM:   0x80000000 -> Processor System Memory: 0x00000000
27  *   EUMB mapped to: ioremap_base - 0x00100000 (ioremap_base - 1 MB)
28  *
29  * MAP B (CHRP Map)
30  *   Processor: 0xfe000000 - 0xfebfffff -> PCI I/O: 0x00000000 - 0x00bfffff
31  *   Processor: 0x80000000 - 0xbfffffff -> PCI MEM: 0x80000000 - 0xbfffffff
32  *   PCI MEM:   0x00000000 -> Processor System Memory: 0x00000000
33  *   EUMB mapped to: ioremap_base - 0x00100000 (ioremap_base - 1 MB)
34  */
35 
36 /*
37  * Define the vendor/device IDs for the various bridges--should be added to
38  * <linux/pci_ids.h>
39  */
40 #define	MPC10X_BRIDGE_106	((PCI_DEVICE_ID_MOTOROLA_MPC106 << 16) |  \
41 				  PCI_VENDOR_ID_MOTOROLA)
42 #define	MPC10X_BRIDGE_8240	((0x0003 << 16) | PCI_VENDOR_ID_MOTOROLA)
43 #define	MPC10X_BRIDGE_107	((0x0004 << 16) | PCI_VENDOR_ID_MOTOROLA)
44 #define	MPC10X_BRIDGE_8245	((0x0006 << 16) | PCI_VENDOR_ID_MOTOROLA)
45 
46 /* Define the type of map to use */
47 #define	MPC10X_MEM_MAP_A		1
48 #define	MPC10X_MEM_MAP_B		2
49 
50 /* Map A (PReP Map) Defines */
51 #define	MPC10X_MAPA_CNFG_ADDR		0x80000cf8
52 #define	MPC10X_MAPA_CNFG_DATA		0x80000cfc
53 
54 #define MPC10X_MAPA_ISA_IO_BASE		0x80000000
55 #define MPC10X_MAPA_ISA_MEM_BASE	0xc0000000
56 #define	MPC10X_MAPA_DRAM_OFFSET		0x80000000
57 
58 #define	MPC10X_MAPA_PCI_INTACK_ADDR	0xbffffff0
59 #define	MPC10X_MAPA_PCI_IO_START	0x00000000
60 #define	MPC10X_MAPA_PCI_IO_END	       (0x00800000 - 1)
61 #define	MPC10X_MAPA_PCI_MEM_START	0x00000000
62 #define	MPC10X_MAPA_PCI_MEM_END	       (0x20000000 - 1)
63 
64 #define	MPC10X_MAPA_PCI_MEM_OFFSET	(MPC10X_MAPA_ISA_MEM_BASE -	\
65 					 MPC10X_MAPA_PCI_MEM_START)
66 
67 /* Map B (CHRP Map) Defines */
68 #define	MPC10X_MAPB_CNFG_ADDR		0xfec00000
69 #define	MPC10X_MAPB_CNFG_DATA		0xfee00000
70 
71 #define MPC10X_MAPB_ISA_IO_BASE		0xfe000000
72 #define MPC10X_MAPB_ISA_MEM_BASE	0x80000000
73 #define	MPC10X_MAPB_DRAM_OFFSET		0x00000000
74 
75 #define	MPC10X_MAPB_PCI_INTACK_ADDR	0xfef00000
76 #define	MPC10X_MAPB_PCI_IO_START	0x00000000
77 #define	MPC10X_MAPB_PCI_IO_END	       (0x00c00000 - 1)
78 #define	MPC10X_MAPB_PCI_MEM_START	0x80000000
79 #define	MPC10X_MAPB_PCI_MEM_END	       (0xc0000000 - 1)
80 
81 #define	MPC10X_MAPB_PCI_MEM_OFFSET	(MPC10X_MAPB_ISA_MEM_BASE -	\
82 					 MPC10X_MAPB_PCI_MEM_START)
83 
84 /* Miscellaneous Configuration register offsets */
85 #define	MPC10X_CFG_PIR_REG		0x09
86 #define	MPC10X_CFG_PIR_HOST_BRIDGE	0x00
87 #define	MPC10X_CFG_PIR_AGENT		0x01
88 
89 #define	MPC10X_CFG_EUMBBAR		0x78
90 
91 #define	MPC10X_CFG_PICR1_REG		0xa8
92 #define	MPC10X_CFG_PICR1_ADDR_MAP_MASK	0x00010000
93 #define	MPC10X_CFG_PICR1_ADDR_MAP_A	0x00010000
94 #define	MPC10X_CFG_PICR1_ADDR_MAP_B	0x00000000
95 #define	MPC10X_CFG_PICR1_SPEC_PCI_RD	0x00000004
96 #define	MPC10X_CFG_PICR1_ST_GATH_EN	0x00000040
97 
98 #define	MPC10X_CFG_PICR2_REG		0xac
99 #define	MPC10X_CFG_PICR2_COPYBACK_OPT	0x00000001
100 
101 #define	MPC10X_CFG_MAPB_OPTIONS_REG	0xe0
102 #define	MPC10X_CFG_MAPB_OPTIONS_CFAE	0x80	/* CPU_FD_ALIAS_EN */
103 #define	MPC10X_CFG_MAPB_OPTIONS_PFAE	0x40	/* PCI_FD_ALIAS_EN */
104 #define	MPC10X_CFG_MAPB_OPTIONS_DR	0x20	/* DLL_RESET */
105 #define	MPC10X_CFG_MAPB_OPTIONS_PCICH	0x08	/* PCI_COMPATIBILITY_HOLE */
106 #define	MPC10X_CFG_MAPB_OPTIONS_PROCCH	0x04	/* PROC_COMPATIBILITY_HOLE */
107 
108 /* Define offsets for the memory controller registers in the config space */
109 #define MPC10X_MCTLR_MEM_START_1	0x80	/* Banks 0-3 */
110 #define MPC10X_MCTLR_MEM_START_2	0x84	/* Banks 4-7 */
111 #define MPC10X_MCTLR_EXT_MEM_START_1	0x88	/* Banks 0-3 */
112 #define MPC10X_MCTLR_EXT_MEM_START_2	0x8c	/* Banks 4-7 */
113 
114 #define MPC10X_MCTLR_MEM_END_1		0x90	/* Banks 0-3 */
115 #define MPC10X_MCTLR_MEM_END_2		0x94	/* Banks 4-7 */
116 #define MPC10X_MCTLR_EXT_MEM_END_1	0x98	/* Banks 0-3 */
117 #define MPC10X_MCTLR_EXT_MEM_END_2	0x9c	/* Banks 4-7 */
118 
119 #define MPC10X_MCTLR_MEM_BANK_ENABLES	0xa0
120 
121 /* Define some offset in the EUMB */
122 #define	MPC10X_EUMB_SIZE		0x00100000 /* Total EUMB size (1MB) */
123 
124 #define MPC10X_EUMB_MU_OFFSET		0x00000000 /* Msg Unit reg offset */
125 #define MPC10X_EUMB_MU_SIZE		0x00001000 /* Msg Unit reg size */
126 #define MPC10X_EUMB_DMA_OFFSET		0x00001000 /* DMA Unit reg offset */
127 #define MPC10X_EUMB_DMA_SIZE		0x00001000 /* DMA Unit reg size  */
128 #define MPC10X_EUMB_ATU_OFFSET		0x00002000 /* Addr xlate reg offset */
129 #define MPC10X_EUMB_ATU_SIZE		0x00001000 /* Addr xlate reg size  */
130 #define MPC10X_EUMB_I2C_OFFSET		0x00003000 /* I2C Unit reg offset */
131 #define MPC10X_EUMB_I2C_SIZE		0x00001000 /* I2C Unit reg size  */
132 #define MPC10X_EUMB_DUART_OFFSET	0x00004000 /* DUART Unit reg offset (8245) */
133 #define MPC10X_EUMB_DUART_SIZE		0x00001000 /* DUART Unit reg size (8245) */
134 #define	MPC10X_EUMB_EPIC_OFFSET		0x00040000 /* EPIC offset in EUMB */
135 #define	MPC10X_EUMB_EPIC_SIZE		0x00030000 /* EPIC size */
136 #define MPC10X_EUMB_PM_OFFSET		0x000fe000 /* Performance Monitor reg offset (8245) */
137 #define MPC10X_EUMB_PM_SIZE		0x00001000 /* Performance Monitor reg size (8245) */
138 #define MPC10X_EUMB_WP_OFFSET		0x000ff000 /* Data path diagnostic, watchpoint reg offset */
139 #define MPC10X_EUMB_WP_SIZE		0x00001000 /* Data path diagnostic, watchpoint reg size */
140 
141 /*
142  * Define some recommended places to put the EUMB regs.
143  * For both maps, recommend putting the EUMB from 0xeff00000 to 0xefffffff.
144  */
145 extern unsigned long			ioremap_base;
146 #define	MPC10X_MAPA_EUMB_BASE		(ioremap_base - MPC10X_EUMB_SIZE)
147 #define	MPC10X_MAPB_EUMB_BASE		MPC10X_MAPA_EUMB_BASE
148 
149 enum ppc_sys_devices {
150 	MPC10X_IIC1,
151 	MPC10X_DMA0,
152 	MPC10X_DMA1,
153 	MPC10X_UART0,
154 	MPC10X_UART1,
155 	NUM_PPC_SYS_DEVS,
156 };
157 
158 int mpc10x_bridge_init(struct pci_controller *hose,
159 		       uint current_map,
160 		       uint new_map,
161 		       uint phys_eumb_base);
162 unsigned long mpc10x_get_mem_size(uint mem_map);
163 int mpc10x_enable_store_gathering(struct pci_controller *hose);
164 int mpc10x_disable_store_gathering(struct pci_controller *hose);
165 
166 /* For MPC107 boards that use the built-in openpic */
167 void mpc10x_set_openpic(void);
168 
169 #endif	/* __PPC_KERNEL_MPC10X_H */
170