cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fdc37c93xapm.c (6321B)


      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Setup for the SMSC FDC37C93xAPM
      4 *
      5 * Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com)
      6 * Copyright (C) 2003, 2004 SuperH, Inc.
      7 * Copyright (C) 2004, 2005 Paul Mundt
      8 *
      9 * SuperH SH4-202 MicroDev board support.
     10 */
     11#include <linux/init.h>
     12#include <linux/ioport.h>
     13#include <linux/io.h>
     14#include <linux/err.h>
     15#include <mach/microdev.h>
     16
     17#define SMSC_CONFIG_PORT_ADDR	 (0x3F0)
     18#define SMSC_INDEX_PORT_ADDR	 SMSC_CONFIG_PORT_ADDR
     19#define SMSC_DATA_PORT_ADDR	 (SMSC_INDEX_PORT_ADDR + 1)
     20
     21#define SMSC_ENTER_CONFIG_KEY	 0x55
     22#define SMSC_EXIT_CONFIG_KEY	 0xaa
     23
     24#define SMCS_LOGICAL_DEV_INDEX	 0x07	/* Logical Device Number */
     25#define SMSC_DEVICE_ID_INDEX	 0x20	/* Device ID */
     26#define SMSC_DEVICE_REV_INDEX	 0x21	/* Device Revision */
     27#define SMSC_ACTIVATE_INDEX	 0x30	/* Activate */
     28#define SMSC_PRIMARY_BASE_INDEX	 0x60	/* Primary Base Address */
     29#define SMSC_SECONDARY_BASE_INDEX 0x62	/* Secondary Base Address */
     30#define SMSC_PRIMARY_INT_INDEX	 0x70	/* Primary Interrupt Select */
     31#define SMSC_SECONDARY_INT_INDEX 0x72	/* Secondary Interrupt Select */
     32#define SMSC_HDCS0_INDEX	 0xf0	/* HDCS0 Address Decoder */
     33#define SMSC_HDCS1_INDEX	 0xf1	/* HDCS1 Address Decoder */
     34
     35#define SMSC_IDE1_DEVICE	1	/* IDE #1 logical device */
     36#define SMSC_IDE2_DEVICE	2	/* IDE #2 logical device */
     37#define SMSC_PARALLEL_DEVICE	3	/* Parallel Port logical device */
     38#define SMSC_SERIAL1_DEVICE	4	/* Serial #1 logical device */
     39#define SMSC_SERIAL2_DEVICE	5	/* Serial #2 logical device */
     40#define SMSC_KEYBOARD_DEVICE	7	/* Keyboard logical device */
     41#define SMSC_CONFIG_REGISTERS	8	/* Configuration Registers (Aux I/O) */
     42
     43#define SMSC_READ_INDEXED(index) ({ \
     44	outb((index), SMSC_INDEX_PORT_ADDR); \
     45	inb(SMSC_DATA_PORT_ADDR); })
     46#define SMSC_WRITE_INDEXED(val, index) ({ \
     47	outb((index), SMSC_INDEX_PORT_ADDR); \
     48	outb((val),   SMSC_DATA_PORT_ADDR); })
     49
     50#define	IDE1_PRIMARY_BASE	0x01f0	/* Task File Registe base for IDE #1 */
     51#define	IDE1_SECONDARY_BASE	0x03f6	/* Miscellaneous AT registers for IDE #1 */
     52#define	IDE2_PRIMARY_BASE	0x0170	/* Task File Registe base for IDE #2 */
     53#define	IDE2_SECONDARY_BASE	0x0376	/* Miscellaneous AT registers for IDE #2 */
     54
     55#define SERIAL1_PRIMARY_BASE	0x03f8
     56#define SERIAL2_PRIMARY_BASE	0x02f8
     57
     58#define	MSB(x)		( (x) >> 8 )
     59#define	LSB(x)		( (x) & 0xff )
     60
     61	/* General-Purpose base address on CPU-board FPGA */
     62#define	MICRODEV_FPGA_GP_BASE		0xa6100000ul
     63
     64static int __init smsc_superio_setup(void)
     65{
     66
     67	unsigned char devid, devrev;
     68
     69		/* Initially the chip is in run state */
     70		/* Put it into configuration state */
     71	outb(SMSC_ENTER_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
     72
     73		/* Read device ID info */
     74	devid  = SMSC_READ_INDEXED(SMSC_DEVICE_ID_INDEX);
     75	devrev = SMSC_READ_INDEXED(SMSC_DEVICE_REV_INDEX);
     76
     77	if ((devid == 0x30) && (devrev == 0x01))
     78		printk("SMSC FDC37C93xAPM SuperIO device detected\n");
     79	else
     80		return -ENODEV;
     81
     82		/* Select the keyboard device */
     83	SMSC_WRITE_INDEXED(SMSC_KEYBOARD_DEVICE, SMCS_LOGICAL_DEV_INDEX);
     84		/* enable it */
     85	SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
     86		/* enable the interrupts */
     87	SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_KEYBOARD, SMSC_PRIMARY_INT_INDEX);
     88	SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_MOUSE, SMSC_SECONDARY_INT_INDEX);
     89
     90		/* Select the Serial #1 device */
     91	SMSC_WRITE_INDEXED(SMSC_SERIAL1_DEVICE, SMCS_LOGICAL_DEV_INDEX);
     92		/* enable it */
     93	SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
     94		/* program with port addresses */
     95	SMSC_WRITE_INDEXED(MSB(SERIAL1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
     96	SMSC_WRITE_INDEXED(LSB(SERIAL1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
     97	SMSC_WRITE_INDEXED(0x00, SMSC_HDCS0_INDEX);
     98		/* enable the interrupts */
     99	SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_SERIAL1, SMSC_PRIMARY_INT_INDEX);
    100
    101		/* Select the Serial #2 device */
    102	SMSC_WRITE_INDEXED(SMSC_SERIAL2_DEVICE, SMCS_LOGICAL_DEV_INDEX);
    103		/* enable it */
    104	SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
    105		/* program with port addresses */
    106	SMSC_WRITE_INDEXED(MSB(SERIAL2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
    107	SMSC_WRITE_INDEXED(LSB(SERIAL2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
    108	SMSC_WRITE_INDEXED(0x00, SMSC_HDCS0_INDEX);
    109		/* enable the interrupts */
    110	SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_SERIAL2, SMSC_PRIMARY_INT_INDEX);
    111
    112		/* Select the IDE#1 device */
    113	SMSC_WRITE_INDEXED(SMSC_IDE1_DEVICE, SMCS_LOGICAL_DEV_INDEX);
    114		/* enable it */
    115	SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
    116		/* program with port addresses */
    117	SMSC_WRITE_INDEXED(MSB(IDE1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
    118	SMSC_WRITE_INDEXED(LSB(IDE1_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
    119	SMSC_WRITE_INDEXED(MSB(IDE1_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+0);
    120	SMSC_WRITE_INDEXED(LSB(IDE1_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+1);
    121	SMSC_WRITE_INDEXED(0x0c, SMSC_HDCS0_INDEX);
    122	SMSC_WRITE_INDEXED(0x00, SMSC_HDCS1_INDEX);
    123		/* select the interrupt */
    124	SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_IDE1, SMSC_PRIMARY_INT_INDEX);
    125
    126		/* Select the IDE#2 device */
    127	SMSC_WRITE_INDEXED(SMSC_IDE2_DEVICE, SMCS_LOGICAL_DEV_INDEX);
    128		/* enable it */
    129	SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);
    130		/* program with port addresses */
    131	SMSC_WRITE_INDEXED(MSB(IDE2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+0);
    132	SMSC_WRITE_INDEXED(LSB(IDE2_PRIMARY_BASE), SMSC_PRIMARY_BASE_INDEX+1);
    133	SMSC_WRITE_INDEXED(MSB(IDE2_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+0);
    134	SMSC_WRITE_INDEXED(LSB(IDE2_SECONDARY_BASE), SMSC_SECONDARY_BASE_INDEX+1);
    135		/* select the interrupt */
    136	SMSC_WRITE_INDEXED(MICRODEV_FPGA_IRQ_IDE2, SMSC_PRIMARY_INT_INDEX);
    137
    138		/* Select the configuration registers */
    139	SMSC_WRITE_INDEXED(SMSC_CONFIG_REGISTERS, SMCS_LOGICAL_DEV_INDEX);
    140		/* enable the appropriate GPIO pins for IDE functionality:
    141		 * bit[0]   In/Out		1==input;  0==output
    142		 * bit[1]   Polarity		1==invert; 0==no invert
    143		 * bit[2]   Int Enb #1		1==Enable Combined IRQ #1; 0==disable
    144		 * bit[3:4] Function Select	00==original; 01==Alternate Function #1
    145		 */
    146	SMSC_WRITE_INDEXED(0x00, 0xc2);	/* GP42 = nIDE1_OE */
    147	SMSC_WRITE_INDEXED(0x01, 0xc5);	/* GP45 = IDE1_IRQ */
    148	SMSC_WRITE_INDEXED(0x00, 0xc6);	/* GP46 = nIOROP */
    149	SMSC_WRITE_INDEXED(0x00, 0xc7);	/* GP47 = nIOWOP */
    150	SMSC_WRITE_INDEXED(0x08, 0xe8);	/* GP20 = nIDE2_OE */
    151
    152		/* Exit the configuration state */
    153	outb(SMSC_EXIT_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
    154
    155	return 0;
    156}
    157device_initcall(smsc_superio_setup);