Import of Linux/MIPS 2.1.14.2

1 files changed, 181 insertions, 0 deletions

diff --git a/include/asm-mips/pica.h b/include/asm-mips/pica.h
new file mode 100644
index 000000000..a1056f845
--- /dev/null
+++ b/include/asm-mips/pica.h
@@ -0,0 +1,181 @@
+/*
+ * Hardware info about Acer PICA 61 and similar
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1995 by Andreas Busse and Ralf Baechle
+ */
+#ifndef __ASM_MIPS_PICA_H 
+#define __ASM_MIPS_PICA_H 
+
+/*
+ * The addresses below are virtual address. The mappings are
+ * created on startup via wired entries in the tlb. The Mips
+ * Magnum R3000 and R4000 machines are similar in many aspects,
+ * but many hardware register are accessible at 0xb9000000 in
+ * instead of 0xe0000000.
+ */
+
+/*
+ * Revision numbers in PICA_ASIC_REVISION
+ *
+ * 0xf0000000 - Rev1
+ * 0xf0000001 - Rev2
+ * 0xf0000002 - Rev3
+ */
+#define PICA_ASIC_REVISION      0xe0000008
+
+/*
+ * The segments of the seven segment LED are mapped
+ * to the control bits as follows:
+ *
+ *         (7)
+ *      ---------
+ *      |       |
+ *  (2) |       | (6)
+ *      |  (1)  |
+ *      ---------
+ *      |       |
+ *  (3) |       | (5)
+ *      |  (4)  |
+ *      --------- . (0)
+ */
+#define PICA_LED                0xe000f000
+
+/*
+ * Some characters for the LED control registers
+ * The original Mips machines seem to have a LED display
+ * with integrated decoder while the Acer machines can
+ * control each of the seven segments and the dot independently.
+ * It only a toy, anyway...
+ */
+#define LED_DOT                 0x01
+#define LED_SPACE               0x00
+#define LED_0                   0xfc
+#define LED_1                   0x60
+#define LED_2                   0xda
+#define LED_3                   0xf2
+#define LED_4                   0x66
+#define LED_5                   0xb6
+#define LED_6                   0xbe
+#define LED_7                   0xe0
+#define LED_8                   0xfe
+#define LED_9                   0xf6
+#define LED_A                   0xee
+#define LED_b                   0x3e
+#define LED_C                   0x9c
+#define LED_d                   0x7a
+#define LED_E                   0x9e
+#define LED_F                   0x8e
+
+#ifndef __LANGUAGE_ASSEMBLY__
+
+extern __inline__ void pica_set_led(unsigned int bits)
+{
+	volatile unsigned int *led_register = (unsigned int *) PICA_LED;
+
+	*led_register = bits;
+}
+
+#endif
+
+/*
+ * i8042 keyboard controller for PICA chipset.
+ * This address is just a guess and seems to differ
+ * from the other mips machines...
+ */
+#define PICA_KEYBOARD_ADDRESS   0xe0005000
+#define PICA_KEYBOARD_DATA      0xe0005000
+#define PICA_KEYBOARD_COMMAND   0xe0005001
+
+#ifndef __LANGUAGE_ASSEMBLY__
+
+typedef struct {
+	unsigned char data;
+	unsigned char command;
+} pica_keyboard_hardware;
+
+typedef struct {
+	unsigned char pad0[3];
+	unsigned char data;
+	unsigned char pad1[3];
+	unsigned char command;
+} mips_keyboard_hardware;
+
+/*
+ * For now
+ */
+#define keyboard_hardware       pica_keyboard_hardware
+
+#endif
+
+/*
+ * i8042 keyboard controller for most other Mips machines.
+ */
+#define MIPS_KEYBOARD_ADDRESS   0xb9005000
+#define MIPS_KEYBOARD_DATA      0xb9005003
+#define MIPS_KEYBOARD_COMMAND   0xb9005007
+
+#ifndef __LANGUAGE_ASSEMBLY__
+
+#endif
+
+/*
+ * PICA timer registers and interrupt no.
+ * Note that the hardware timer interrupt is actually on
+ * cpu level 6, but to keep compatibility with PC stuff
+ * it is remapped to vector 0. See arch/mips/kernel/entry.S.
+ */
+#define PICA_TIMER_INTERVAL     0xe0000228
+#define PICA_TIMER_REGISTER     0xe0000230
+
+/*
+ * DRAM configuration register
+ */
+#ifndef __LANGUAGE_ASSEMBLY__
+#ifdef __MIPSEL__
+typedef struct {
+	unsigned int bank2 : 3;
+	unsigned int bank1 : 3;
+	unsigned int mem_bus_width : 1;
+	unsigned int reserved2 : 1;
+	unsigned int page_mode : 1;
+	unsigned int reserved1 : 23;
+} dram_configuration;
+#else /* defined (__MIPSEB__) */
+typedef struct {
+	unsigned int reserved1 : 23;
+	unsigned int page_mode : 1;
+	unsigned int reserved2 : 1;
+	unsigned int mem_bus_width : 1;
+	unsigned int bank1 : 3;
+	unsigned int bank2 : 3;
+} dram_configuration;
+#endif
+#endif /* __LANGUAGE_ASSEMBLY__ */
+
+#define PICA_DRAM_CONFIG        0xe00fffe0
+
+/*
+ * PICA interrupt control registers
+ */
+#define PICA_IO_IRQ_SOURCE      0xe0100000
+#define PICA_IO_IRQ_ENABLE      0xe0100002
+
+/*
+ * Pica interrupt enable bits
+ */
+#define PIE_PARALLEL            (1<<0)
+#define PIE_FLOPPY              (1<<1)
+#define PIE_SOUND               (1<<2)
+#define PIE_VIDEO               (1<<3)
+#define PIE_ETHERNET            (1<<4)
+#define PIE_SCSI                (1<<5)
+#define PIE_KEYBOARD            (1<<6)
+#define PIE_MOUSE               (1<<7)
+#define PIE_SERIAL1             (1<<8)
+#define PIE_SERIAL2             (1<<9)
+
+#endif /* __ASM_MIPS_PICA_H */