isapnp.c
上传用户:sy_wanhua
上传日期:2013-07-25
资源大小:3048k
文件大小:52k
- /*
- * ISA Plug & Play support
- * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
- *
- * Modified by Ed Okerson <eokerson@quicknet.net> to work with the 2.2.x
- * series of Linux kernels. 11/17/99
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
- #include <linux/config.h>
- #include <linux/version.h>
- #define EXPORT_SYMTAB
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/errno.h>
- #include <linux/ioport.h>
- #include <linux/string.h>
- #include <linux/malloc.h>
- #include <linux/proc_fs.h>
- #include <linux/delay.h>
- #include <asm/io.h>
- #include <asm/dma.h>
- #include <asm/irq.h>
- #include <linux/pci.h>
- #include <linux/vmalloc.h>
- #include <linux/poll.h>
- #include <linux/init.h>
- #include <asm/uaccess.h>
- #include "pnpio.h"
- #include "isapnp.h"
- #ifdef CONFIG_PROC_FS
- #include "isapnp_proc.c"
- #endif
- #if 0
- #define ISAPNP_REGION_OK
- #endif
- #if 0
- #define ISAPNP_DEBUG
- #endif
- //struct resource *pidxr_res = NULL;
- //struct resource *pnpwrp_res = NULL;
- //struct resource *isapnp_rdp_res = NULL;
- int isapnp_disable = 0; /* Disable ISA PnP */
- int isapnp_rdp = 0; /* Read Data Port */
- int isapnp_reset = 0; /* reset all PnP cards (deactivate) */
- int isapnp_skip_pci_scan = 0; /* skip PCI resource scanning */
- int isapnp_verbose = 1; /* verbose mode */
- int isapnp_reserve_irq[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some IRQ */
- int isapnp_reserve_dma[8] = { [0 ... 7] = -1 }; /* reserve (don't use) some DMA */
- int isapnp_reserve_io[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some I/O region */
- int isapnp_reserve_mem[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some memory region */
- int isapnp_debug = 0;
- MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
- MODULE_DESCRIPTION("Generic ISA Plug & Play support");
- MODULE_PARM(isapnp_disable, "i");
- MODULE_PARM_DESC(isapnp_disable, "ISA Plug & Play disable");
- MODULE_PARM(isapnp_rdp, "i");
- MODULE_PARM_DESC(isapnp_rdp, "ISA Plug & Play read data port");
- MODULE_PARM(isapnp_reset, "i");
- MODULE_PARM_DESC(isapnp_reset, "ISA Plug & Play reset all cards");
- MODULE_PARM(isapnp_skip_pci_scan, "i");
- MODULE_PARM_DESC(isapnp_skip_pci_scan, "ISA Plug & Play skip PCI resource scanning");
- MODULE_PARM(isapnp_verbose, "i");
- MODULE_PARM_DESC(isapnp_verbose, "ISA Plug & Play verbose mode");
- MODULE_PARM(isapnp_reserve_irq, "1-16i");
- MODULE_PARM_DESC(isapnp_reserve_irq, "ISA Plug & Play - reserve IRQ line(s)");
- MODULE_PARM(isapnp_reserve_dma, "1-8i");
- MODULE_PARM_DESC(isapnp_reserve_dma, "ISA Plug & Play - reserve DMA channel(s)");
- MODULE_PARM(isapnp_reserve_io, "1-16i");
- MODULE_PARM_DESC(isapnp_reserve_io, "ISA Plug & Play - reserve I/O region(s) - port,size");
- MODULE_PARM(isapnp_reserve_mem, "1-16i");
- MODULE_PARM_DESC(isapnp_reserve_mem, "ISA Plug & Play - reserve memory region(s) - address,size");
- MODULE_PARM(isapnp_debug, "i");
- MODULE_PARM_DESC(isapnp_debug, "ISA Plug & Play - Turn on some debugging messages");
- #define _PIDXR 0x279
- #define _PNPWRP 0xa79
- /* short tags */
- #define _STAG_PNPVERNO 0x01
- #define _STAG_LOGDEVID 0x02
- #define _STAG_COMPATDEVID 0x03
- #define _STAG_IRQ 0x04
- #define _STAG_DMA 0x05
- #define _STAG_STARTDEP 0x06
- #define _STAG_ENDDEP 0x07
- #define _STAG_IOPORT 0x08
- #define _STAG_FIXEDIO 0x09
- #define _STAG_VENDOR 0x0e
- #define _STAG_END 0x0f
- /* long tags */
- #define _LTAG_MEMRANGE 0x81
- #define _LTAG_ANSISTR 0x82
- #define _LTAG_UNICODESTR 0x83
- #define _LTAG_VENDOR 0x84
- #define _LTAG_MEM32RANGE 0x85
- #define _LTAG_FIXEDMEM32RANGE 0x86
- struct pnp_bus *isapnp_cards = NULL; /* ISA PnP cards */
- struct pnp_dev *isapnp_devices = NULL; /* ISA PnP devices */
- static struct pnp_dev *isapnp_last_device = NULL;
- static unsigned char isapnp_checksum_value;
- static struct semaphore isapnp_cfg_mutex = MUTEX;
- static int isapnp_detected = 0;
- /* some prototypes */
- static int isapnp_config_prepare(struct pnp_dev *dev);
- static int isapnp_config_activate(struct pnp_dev *dev);
- static int isapnp_config_deactivate(struct pnp_dev *dev);
- static inline void write_data(unsigned char x)
- {
- outb(x, _PNPWRP);
- }
- static inline void write_address(unsigned char x)
- {
- outb(x, _PIDXR);
- udelay(10);
- }
- static inline unsigned char read_data(void)
- {
- unsigned char val = inb(isapnp_rdp);
- return val;
- }
- unsigned char isapnp_read_byte(unsigned char idx)
- {
- write_address(idx);
- return read_data();
- }
- unsigned short isapnp_read_word(unsigned char idx)
- {
- unsigned short val;
- val = isapnp_read_byte(idx);
- val = (val << 8) + isapnp_read_byte(idx+1);
- return val;
- }
- unsigned int isapnp_read_dword(unsigned char idx)
- {
- unsigned int val;
- val = isapnp_read_byte(idx);
- val = (val << 8) + isapnp_read_byte(idx+1);
- val = (val << 8) + isapnp_read_byte(idx+2);
- val = (val << 8) + isapnp_read_byte(idx+3);
- return val;
- }
- void isapnp_write_byte(unsigned char idx, unsigned char val)
- {
- write_address(idx);
- write_data(val);
- }
- void isapnp_write_word(unsigned char idx, unsigned short val)
- {
- isapnp_write_byte(idx, val >> 8);
- isapnp_write_byte(idx+1, val);
- }
- void isapnp_write_dword(unsigned char idx, unsigned int val)
- {
- isapnp_write_byte(idx, val >> 24);
- isapnp_write_byte(idx+1, val >> 16);
- isapnp_write_byte(idx+2, val >> 8);
- isapnp_write_byte(idx+3, val);
- }
- static void *isapnp_alloc(long size)
- {
- void *result;
- result = kmalloc(size, GFP_KERNEL);
- if (!result)
- return NULL;
- memset(result, 0, size);
- return result;
- }
- static void isapnp_key(void)
- {
- unsigned char code = 0x6a, msb;
- int i;
- mdelay(1);
- write_address(0x00);
- write_address(0x00);
- write_address(code);
- for (i = 1; i < 32; i++) {
- msb = ((code & 0x01) ^ ((code & 0x02) >> 1)) << 7;
- code = (code >> 1) | msb;
- write_address(code);
- }
- }
- /* place all pnp cards in wait-for-key state */
- static void isapnp_wait(void)
- {
- isapnp_write_byte(0x02, 0x02);
- }
- void isapnp_wake(unsigned char csn)
- {
- isapnp_write_byte(0x03, csn);
- }
- void isapnp_device(unsigned char logdev)
- {
- isapnp_write_byte(0x07, logdev);
- }
- void isapnp_activate(unsigned char logdev)
- {
- isapnp_device(logdev);
- isapnp_write_byte(ISAPNP_CFG_ACTIVATE, 1);
- udelay(250);
- }
- void isapnp_deactivate(unsigned char logdev)
- {
- isapnp_device(logdev);
- isapnp_write_byte(ISAPNP_CFG_ACTIVATE, 0);
- }
- static void __init isapnp_peek(unsigned char *data, int bytes)
- {
- int i, j;
- unsigned char d;
- for (i = 1; i <= bytes; i++) {
- for (j = 0; j < 10; j++) {
- d = isapnp_read_byte(0x05);
- if (d & 1)
- break;
- udelay(10);
- }
- if (!(d & 1)) {
- *data++ = 0xff;
- continue;
- }
- d = isapnp_read_byte(0x04); /* PRESDI */
- isapnp_checksum_value += d;
- if (data != NULL)
- *data++ = d;
- }
- }
- #define RDP_STEP 32 /* minimum is 4 */
- static int isapnp_next_rdp(void)
- {
- int rdp = isapnp_rdp;
- while (rdp <= 0x3ff) {
- if (!check_region(rdp, 1)) {
- isapnp_rdp = rdp;
- return 0;
- }
- rdp += RDP_STEP;
- }
- return -1;
- }
- /* Set read port address */
- static inline void isapnp_set_rdp(void)
- {
- isapnp_write_byte(0x00, isapnp_rdp >> 2);
- udelay(100);
- }
- /*
- * This code is badly broken. We cannot simply pick ports as the
- * ISAPnP specification implies. We should try 4 or 5 safe ports
- * then bale by default.
- *
- * This code touches NE2K cards or other devices and your box is
- * history.
- */
- static int __init isapnp_isolate_rdp_select(void)
- {
- isapnp_wait();
- isapnp_key();
- /* Control: reset CSN and conditionally everything else too */
- isapnp_write_byte(0x02, isapnp_reset ? 0x05 : 0x04);
- mdelay(2);
- isapnp_wait();
- isapnp_key();
- isapnp_wake(0x00);
- if (isapnp_next_rdp() < 0) {
- isapnp_wait();
- return -1;
- }
- isapnp_set_rdp();
- udelay(1000);
- write_address(0x01);
- udelay(1000);
- return 0;
- }
- /*
- * Isolate (assign uniqued CSN) to all ISA PnP devices.
- */
- static int __init isapnp_isolate(void)
- {
- unsigned char checksum = 0x6a;
- unsigned char chksum = 0x00;
- unsigned char bit = 0x00;
- int data;
- int csn = 0;
- int i;
- int iteration = 1;
- isapnp_rdp = 0x213;
- if (isapnp_isolate_rdp_select() < 0)
- return -1;
- while (1) {
- for (i = 1; i <= 64; i++) {
- data = read_data() << 8;
- udelay(250);
- data = data | read_data();
- udelay(250);
- if (data == 0x55aa)
- bit = 0x01;
- checksum = ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | (checksum >> 1);
- bit = 0x00;
- }
- for (i = 65; i <= 72; i++) {
- data = read_data() << 8;
- udelay(250);
- data = data | read_data();
- udelay(250);
- if (data == 0x55aa)
- chksum |= (1 << (i - 65));
- }
- if (checksum != 0x00 && checksum == chksum) {
- csn++;
- isapnp_write_byte(0x06, csn);
- udelay(250);
- iteration++;
- isapnp_wake(0x00);
- write_address(0x01);
- goto __next;
- }
- if (iteration == 1) {
- isapnp_rdp += RDP_STEP;
- if (isapnp_isolate_rdp_select() < 0)
- return -1;
- } else if (iteration > 1) {
- break;
- }
- __next:
- checksum = 0x6a;
- chksum = 0x00;
- bit = 0x00;
- }
- isapnp_wait();
- return csn;
- }
- /*
- * Read one tag from stream.
- */
- static int __init isapnp_read_tag(unsigned char *type, unsigned short *size)
- {
- unsigned char tag, tmp[2];
- isapnp_peek(&tag, 1);
- if (tag == 0) /* invalid tag */
- return -1;
- if (tag & 0x80) { /* large item */
- *type = tag;
- isapnp_peek(tmp, 2);
- *size = (tmp[1] << 8) | tmp[0];
- } else {
- *type = (tag >> 3) & 0x0f;
- *size = tag & 0x07;
- }
- if(isapnp_debug > 0)
- {
- printk("tag = 0x%x, type = 0x%x, size = %in", tag, *type, *size);
- }
- if (type == 0) /* wrong type */
- return -1;
- if (*type == 0xff && *size == 0xffff) /* probably invalid data */
- return -1;
- return 0;
- }
- /*
- * Skip specified number of bytes from stream.
- */
-
- static void __init isapnp_skip_bytes(int count)
- {
- isapnp_peek(NULL, count);
- }
- /*
- * Parse logical device tag.
- */
- static struct pnp_dev * __init isapnp_parse_device(struct pnp_bus *card,
- int size, int number)
- {
- unsigned char tmp[6];
- struct pnp_dev *dev;
- isapnp_peek(tmp, size);
- dev = isapnp_alloc(sizeof(struct pnp_dev));
- if (!dev)
- return NULL;
- dev->devfn = number;
- dev->vendor = (tmp[1] << 8) | tmp[0];
- dev->device = (tmp[3] << 8) | tmp[2];
- dev->regs = tmp[4];
- dev->bus = card;
- if (size > 5)
- dev->regs |= tmp[5] << 8;
- dev->prepare = isapnp_config_prepare;
- dev->activate = isapnp_config_activate;
- dev->deactivate = isapnp_config_deactivate;
- return dev;
- }
- /*
- * Build new resources structure
- */
- static struct isapnp_resources * __init isapnp_build_resources(struct pnp_dev *dev, int dependent)
- {
- struct isapnp_resources *res, *ptr, *ptra;
-
- res = isapnp_alloc(sizeof(struct isapnp_resources));
- if (!res)
- return NULL;
- res->dev = dev;
- ptr = (struct isapnp_resources *)dev->sysdata;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr && ptr->dependent && dependent) { /* add to another list */
- ptra = ptr->alt;
- while (ptra && ptra->alt)
- ptra = ptra->alt;
- if (!ptra)
- ptr->alt = res;
- else
- ptra->alt = res;
- } else {
- if (!ptr)
- dev->sysdata = res;
- else
- ptr->next = res;
- }
- if (dependent) {
- res->priority = dependent & 0xff;
- if (res->priority > ISAPNP_RES_PRIORITY_FUNCTIONAL)
- res->priority = ISAPNP_RES_PRIORITY_INVALID;
- res->dependent = 1;
- } else {
- res->priority = ISAPNP_RES_PRIORITY_PREFERRED;
- res->dependent = 0;
- }
- return res;
- }
- /*
- * Add IRQ resource to resources list.
- */
- static void __init isapnp_add_irq_resource(struct pnp_dev *dev,
- struct isapnp_resources **res,
- int dependent, int size)
- {
- unsigned char tmp[3];
- struct isapnp_irq *irq, *ptr;
- isapnp_peek(tmp, size);
- irq = isapnp_alloc(sizeof(struct isapnp_irq));
- if (!irq)
- return;
- if (*res == NULL) {
- *res = isapnp_build_resources(dev, dependent);
- if (*res == NULL) {
- kfree(irq);
- return;
- }
- }
- irq->map = (tmp[1] << 8) | tmp[0];
- if (size > 2)
- irq->flags = tmp[2];
- else
- irq->flags = IORESOURCE_IRQ_HIGHEDGE;
- irq->res = *res;
- ptr = (*res)->irq;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = irq;
- else
- (*res)->irq = irq;
- }
- /*
- * Add DMA resource to resources list.
- */
- static void __init isapnp_add_dma_resource(struct pnp_dev *dev,
- struct isapnp_resources **res,
- int dependent, int size)
- {
- unsigned char tmp[2];
- struct isapnp_dma *dma, *ptr;
- isapnp_peek(tmp, size);
- dma = isapnp_alloc(sizeof(struct isapnp_dma));
- if (!dma)
- return;
- if (*res == NULL) {
- *res = isapnp_build_resources(dev, dependent);
- if (*res == NULL) {
- kfree(dma);
- return;
- }
- }
- dma->map = tmp[0];
- dma->flags = tmp[1];
- dma->res = *res;
- ptr = (*res)->dma;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = dma;
- else
- (*res)->dma = dma;
- }
- /*
- * Add port resource to resources list.
- */
- static void __init isapnp_add_port_resource(struct pnp_dev *dev,
- struct isapnp_resources **res,
- int dependent, int size)
- {
- unsigned char tmp[7];
- struct isapnp_port *port, *ptr;
- isapnp_peek(tmp, size);
- port = isapnp_alloc(sizeof(struct isapnp_port));
- if (!port)
- return;
- if (*res == NULL) {
- *res = isapnp_build_resources(dev, dependent);
- if (*res == NULL) {
- kfree(port);
- return;
- }
- }
- port->min = (tmp[2] << 8) | tmp[1];
- port->max = (tmp[4] << 8) | tmp[3];
- port->align = tmp[5];
- port->size = tmp[6];
- port->flags = tmp[0] ? ISAPNP_PORT_FLAG_16BITADDR : 0;
- port->res = *res;
- ptr = (*res)->port;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = port;
- else
- (*res)->port = port;
- }
- /*
- * Add fixed port resource to resources list.
- */
- static void __init isapnp_add_fixed_port_resource(struct pnp_dev *dev,
- struct isapnp_resources **res,
- int dependent, int size)
- {
- unsigned char tmp[3];
- struct isapnp_port *port, *ptr;
- isapnp_peek(tmp, size);
- port = isapnp_alloc(sizeof(struct isapnp_port));
- if (!port)
- return;
- if (*res == NULL) {
- *res = isapnp_build_resources(dev, dependent);
- if (*res == NULL) {
- kfree(port);
- return;
- }
- }
- port->min = port->max = (tmp[1] << 8) | tmp[0];
- port->size = tmp[2];
- port->align = 0;
- port->flags = ISAPNP_PORT_FLAG_FIXED;
- port->res = *res;
- ptr = (*res)->port;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = port;
- else
- (*res)->port = port;
- }
- /*
- * Add memory resource to resources list.
- */
- static void __init isapnp_add_mem_resource(struct pnp_dev *dev,
- struct isapnp_resources **res,
- int dependent, int size)
- {
- unsigned char tmp[9];
- struct isapnp_mem *mem, *ptr;
- isapnp_peek(tmp, size);
- mem = isapnp_alloc(sizeof(struct isapnp_mem));
- if (!mem)
- return;
- if (*res == NULL) {
- *res = isapnp_build_resources(dev, dependent);
- if (*res == NULL) {
- kfree(mem);
- return;
- }
- }
- mem->min = ((tmp[2] << 8) | tmp[1]) << 8;
- mem->max = ((tmp[4] << 8) | tmp[3]) << 8;
- mem->align = (tmp[6] << 8) | tmp[5];
- mem->size = ((tmp[8] << 8) | tmp[7]) << 8;
- mem->flags = tmp[0];
- mem->res = *res;
- ptr = (*res)->mem;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = mem;
- else
- (*res)->mem = mem;
- }
- /*
- * Add 32-bit memory resource to resources list.
- */
- static void __init isapnp_add_mem32_resource(struct pnp_dev *dev,
- struct isapnp_resources **res,
- int dependent, int size)
- {
- unsigned char tmp[17];
- struct isapnp_mem32 *mem32, *ptr;
- isapnp_peek(tmp, size);
- mem32 = isapnp_alloc(sizeof(struct isapnp_mem32));
- if (!mem32)
- return;
- if (*res == NULL) {
- *res = isapnp_build_resources(dev, dependent);
- if (*res == NULL) {
- kfree(mem32);
- return;
- }
- }
- memcpy(mem32->data, tmp, 17);
- mem32->res = *res;
- ptr = (*res)->mem32;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = mem32;
- else
- (*res)->mem32 = mem32;
- }
- /*
- * Add 32-bit fixed memory resource to resources list.
- */
- static void __init isapnp_add_fixed_mem32_resource(struct pnp_dev *dev,
- struct isapnp_resources **res,
- int dependent, int size)
- {
- unsigned char tmp[17];
- struct isapnp_mem32 *mem32, *ptr;
- isapnp_peek(tmp, size);
- mem32 = isapnp_alloc(sizeof(struct isapnp_mem32));
- if (!mem32)
- return;
- if (*res == NULL) {
- *res = isapnp_build_resources(dev, dependent);
- if (*res == NULL) {
- kfree(mem32);
- return;
- }
- }
- memcpy(mem32->data, tmp, 17);
- mem32->res = *res;
- ptr = (*res)->mem32;
- while (ptr && ptr->next)
- ptr = ptr->next;
- if (ptr)
- ptr->next = mem32;
- else
- (*res)->mem32 = mem32;
- }
- /*
- * Parse resource map for logical device.
- */
- static int __init isapnp_create_device(struct pnp_bus *card,
- unsigned short size)
- {
- int number = 0, skip = 0, dependent = 0, compat = 0;
- unsigned char type, tmp[17];
- struct pnp_dev *dev, *prev_dev;
- struct isapnp_resources *res = NULL;
-
- if ((dev = isapnp_parse_device(card, size, number++)) == NULL)
- return 1;
- card->devices = dev;
- if (isapnp_last_device) {
- isapnp_last_device->next = dev;
- isapnp_last_device = dev;
- } else {
- isapnp_devices = isapnp_last_device = dev;
- }
- while (1) {
- if (isapnp_read_tag(&type, &size)<0)
- return 1;
- if (skip && type != _STAG_LOGDEVID && type != _STAG_END)
- goto __skip;
- switch (type) {
- case _STAG_LOGDEVID:
- if (size >= 5 && size <= 6) {
- prev_dev = dev;
- isapnp_config_prepare(dev);
- if ((dev = isapnp_parse_device(card, size, number++)) == NULL)
- return 1;
- prev_dev->sibling = dev;
- isapnp_last_device->next = dev;
- isapnp_last_device = dev;
- size = 0;
- skip = 0;
- } else {
- skip = 1;
- }
- res = NULL;
- dependent = 0;
- compat = 0;
- break;
- case _STAG_COMPATDEVID:
- if (size == 4 && compat < DEVICE_COUNT_COMPATIBLE) {
- isapnp_peek(tmp, 4);
- dev->vendor_compatible[compat] = (tmp[1] << 8) | tmp[0];
- dev->device_compatible[compat] = (tmp[3] << 8) | tmp[2];
- compat++;
- size = 0;
- }
- break;
- case _STAG_IRQ:
- if (size < 2 || size > 3)
- goto __skip;
- isapnp_add_irq_resource(dev, &res, dependent, size);
- size = 0;
- break;
- case _STAG_DMA:
- if (size != 2)
- goto __skip;
- isapnp_add_dma_resource(dev, &res, dependent, size);
- size = 0;
- break;
- case _STAG_STARTDEP:
- if (size > 1)
- goto __skip;
- res = NULL;
- dependent = 0x100 | ISAPNP_RES_PRIORITY_ACCEPTABLE;
- if (size > 0) {
- isapnp_peek(tmp, size);
- dependent = 0x100 | tmp[0];
- size = 0;
- }
- break;
- case _STAG_ENDDEP:
- if (size != 0)
- goto __skip;
- res = NULL;
- dependent = 0;
- break;
- case _STAG_IOPORT:
- if (size != 7)
- goto __skip;
- isapnp_add_port_resource(dev, &res, dependent, size);
- size = 0;
- break;
- case _STAG_FIXEDIO:
- if (size != 3)
- goto __skip;
- isapnp_add_fixed_port_resource(dev, &res, dependent, size);
- size = 0;
- break;
- case _STAG_VENDOR:
- break;
- case _LTAG_MEMRANGE:
- if (size != 9)
- goto __skip;
- isapnp_add_mem_resource(dev, &res, dependent, size);
- size = 0;
- break;
- case _LTAG_ANSISTR:
- if (dev->name[0] == ' ') {
- unsigned short size1 = size > 47 ? 47 : size;
- isapnp_peek(dev->name, size1);
- dev->name[size1] = ' ';
- size -= size1;
- }
- break;
- case _LTAG_UNICODESTR:
- /* silently ignore */
- /* who use unicode for hardware identification? */
- break;
- case _LTAG_VENDOR:
- break;
- case _LTAG_MEM32RANGE:
- if (size != 17)
- goto __skip;
- isapnp_add_mem32_resource(dev, &res, dependent, size);
- size = 0;
- break;
- case _LTAG_FIXEDMEM32RANGE:
- if (size != 17)
- goto __skip;
- isapnp_add_fixed_mem32_resource(dev, &res, dependent, size);
- size = 0;
- break;
- case _STAG_END:
- if (size > 0)
- isapnp_skip_bytes(size);
- return 1;
- default:
- printk("isapnp: unexpected or unknown tag type 0x%x for logical device %i (device %i), ignoredn", type, dev->devfn, card->number);
- }
- __skip:
- if (size > 0)
- isapnp_skip_bytes(size);
- }
- isapnp_config_prepare(dev);
- return 0;
- }
- /*
- * Parse resource map for ISA PnP card.
- */
-
- static void __init isapnp_parse_resource_map(struct pnp_bus *card)
- {
- unsigned char type, tmp[17];
- unsigned short size;
-
- while (1) {
- if (isapnp_read_tag(&type, &size)<0)
- return;
- switch (type) {
- case _STAG_PNPVERNO:
- if (size != 2)
- goto __skip;
- isapnp_peek(tmp, 2);
- card->pnpver = tmp[0];
- card->productver = tmp[1];
- size = 0;
- break;
- case _STAG_LOGDEVID:
- if (size >= 5 && size <= 6) {
- if (isapnp_create_device(card, size)==1)
- return;
- size = 0;
- }
- break;
- case _STAG_VENDOR:
- break;
- case _LTAG_ANSISTR:
- if (card->name[0] == ' ') {
- unsigned short size1 = size > 47 ? 47 : size;
- isapnp_peek(card->name, size1);
- card->name[size1] = ' ';
- size -= size1;
- }
- break;
- case _LTAG_UNICODESTR:
- /* silently ignore */
- /* who use unicode for hardware identification? */
- break;
- case _LTAG_VENDOR:
- break;
- case _STAG_END:
- if (size > 0)
- isapnp_skip_bytes(size);
- return;
- default:
- printk("isapnp: unexpected or unknown tag type 0x%x for device %i, ignoredn", type, card->number);
- }
- __skip:
- if (size > 0)
- isapnp_skip_bytes(size);
- }
- }
- /*
- * Compute ISA PnP checksum for first eight bytes.
- */
- static unsigned char __init isapnp_checksum(unsigned char *data)
- {
- int i, j;
- unsigned char checksum = 0x6a, bit, b;
-
- for (i = 0; i < 8; i++) {
- b = data[i];
- for (j = 0; j < 8; j++) {
- bit = 0;
- if (b & (1 << j))
- bit = 1;
- checksum = ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | (checksum >> 1);
- }
- }
- return checksum;
- }
- /*
- * Build device list for all present ISA PnP devices.
- */
- static int __init isapnp_build_device_list(void)
- {
- int csn;
- unsigned char header[9], checksum;
- struct pnp_bus *card, *prev = NULL;
- isapnp_wait();
- isapnp_key();
- for (csn = 1; csn <= 10; csn++) {
- isapnp_wake(csn);
- isapnp_peek(header, 9);
- checksum = isapnp_checksum(header);
- if(isapnp_debug > 0)
- {
- printk("vendor: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02xn",
- header[0], header[1], header[2], header[3],
- header[4], header[5], header[6], header[7], header[8]);
- printk("checksum = 0x%xn", checksum);
- }
- if (checksum == 0x00 || checksum != header[8]) /* not valid CSN */
- continue;
- if ((card = isapnp_alloc(sizeof(struct pnp_bus))) == NULL)
- continue;
- card->number = csn;
- card->vendor = (header[1] << 8) | header[0];
- card->device = (header[3] << 8) | header[2];
- card->serial = (header[7] << 24) | (header[6] << 16) | (header[5] << 8) | header[4];
- isapnp_checksum_value = 0x00;
- isapnp_parse_resource_map(card);
- if (isapnp_checksum_value != 0x00)
- printk("isapnp: checksum for device %i is not valid (0x%x)n", csn, isapnp_checksum_value);
- card->checksum = isapnp_checksum_value;
- if (!isapnp_cards)
- isapnp_cards = card;
- else
- prev->next = card;
- prev = card;
- }
- return 0;
- }
- /*
- * Basic configuration routines.
- */
- int isapnp_present(void)
- {
- if (isapnp_devices)
- return 1;
- return 0;
- }
- int isapnp_cfg_begin(int csn, int logdev)
- {
- if (csn < 1 || csn > 10 || logdev > 10)
- return -EINVAL;
- MOD_INC_USE_COUNT;
- down(&isapnp_cfg_mutex);
- isapnp_wait();
- isapnp_key();
- isapnp_wake(csn);
- #if 1 /* to avoid malfunction when the isapnptools package is used */
- isapnp_set_rdp();
- udelay(1000); /* delay 1000us */
- write_address(0x01);
- udelay(1000); /* delay 1000us */
- #endif
- if (logdev >= 0)
- isapnp_device(logdev);
- return 0;
- }
- int isapnp_cfg_end(void)
- {
- isapnp_wait();
- up(&isapnp_cfg_mutex);
- MOD_DEC_USE_COUNT;
- return 0;
- }
- /*
- * Resource manager.
- */
- static struct isapnp_port *isapnp_find_port(struct pnp_dev *dev, int index)
- {
- struct isapnp_resources *res;
- struct isapnp_port *port;
-
- if (!dev || index < 0 || index > 7)
- return NULL;
- for (res = (struct isapnp_resources *)dev->sysdata; res; res = res->next) {
- for (port = res->port; port; port = port->next) {
- if (!index)
- return port;
- index--;
- }
- }
- return NULL;
- }
- struct isapnp_irq *isapnp_find_irq(struct pnp_dev *dev, int index)
- {
- struct isapnp_resources *res, *resa;
- struct isapnp_irq *irq;
- int index1, index2, index3;
-
- if (!dev || index < 0 || index > 7)
- return NULL;
- for (res = (struct isapnp_resources *)dev->sysdata; res; res = res->next) {
- index3 = 0;
- for (resa = res; resa; resa = resa->alt) {
- index1 = index;
- index2 = 0;
- for (irq = resa->irq; irq; irq = irq->next) {
- if (!index1)
- return irq;
- index1--;
- index2++;
- }
- if (index3 < index2)
- index3 = index2;
- }
- index -= index3;
- }
- return NULL;
- }
- struct isapnp_dma *isapnp_find_dma(struct pnp_dev *dev, int index)
- {
- struct isapnp_resources *res;
- struct isapnp_dma *dma;
-
- if (!dev || index < 0 || index > 7)
- return NULL;
- for (res = (struct isapnp_resources *)dev->sysdata; res; res = res->next) {
- for (dma = res->dma; dma; dma = dma->next) {
- if (!index)
- return dma;
- index--;
- }
- }
- return NULL;
- }
- struct isapnp_mem *isapnp_find_mem(struct pnp_dev *dev, int index)
- {
- struct isapnp_resources *res;
- struct isapnp_mem *mem;
-
- if (!dev || index < 0 || index > 7)
- return NULL;
- for (res = (struct isapnp_resources *)dev->sysdata; res; res = res->next) {
- for (mem = res->mem; mem; mem = mem->next) {
- if (!index)
- return mem;
- index--;
- }
- }
- return NULL;
- }
- struct isapnp_mem32 *isapnp_find_mem32(struct pnp_dev *dev, int index)
- {
- struct isapnp_resources *res;
- struct isapnp_mem32 *mem32;
-
- if (!dev || index < 0 || index > 7)
- return NULL;
- for (res = (struct isapnp_resources *)dev->sysdata; res; res = res->next) {
- for (mem32 = res->mem32; mem32; mem32 = mem32->next) {
- if (!index)
- return mem32;
- index--;
- }
- }
- return NULL;
- }
- /*
- * Device manager.
- */
- struct pnp_bus *isapnp_find_card(unsigned short vendor,
- unsigned short device,
- struct pnp_bus *from)
- {
- struct pnp_bus *card;
- if (from == NULL) {
- from = isapnp_cards;
- } else {
- from = from->next;
- }
- for (card = from; card; card = card->next) {
- if (card->vendor == vendor && card->device == device)
- return card;
- }
- return NULL;
- }
- struct pnp_dev *isapnp_find_dev(struct pnp_bus *card,
- unsigned short vendor,
- unsigned short function,
- struct pnp_dev *from)
- {
- struct pnp_dev *dev;
- int idx;
-
- if (card == NULL) { /* look for a logical device from all cards */
- if (from == NULL) {
- from = isapnp_devices;
- } else {
- from = from->next;
- }
- for (dev = from; dev; dev = dev->next) {
- if (dev->vendor == vendor && dev->device == function)
- return dev;
- for (idx = 0; idx < DEVICE_COUNT_COMPATIBLE; idx++)
- if (dev->vendor_compatible[idx] == vendor &&
- dev->device_compatible[idx] == function)
- return dev;
- }
- } else {
- if (from == NULL) {
- from = card->devices;
- } else {
- from = from->next;
- }
- if (from->bus != card) /* something is wrong */
- return NULL;
- for (dev = from; dev; dev = dev->sibling) {
- if (dev->vendor == vendor && dev->device == function)
- return dev;
- for (idx = 0; idx < DEVICE_COUNT_COMPATIBLE; idx++)
- if (dev->vendor_compatible[idx] == vendor &&
- dev->device_compatible[idx] == function)
- return dev;
- }
- }
- return NULL;
- }
- static unsigned int isapnp_dma_resource_flags(struct isapnp_dma *dma)
- {
- return dma->flags | IORESOURCE_DMA | IORESOURCE_AUTO;
- }
- static unsigned int isapnp_mem_resource_flags(struct isapnp_mem *mem)
- {
- unsigned int result;
- result = mem->flags | IORESOURCE_MEM | IORESOURCE_AUTO;
- if (!(mem->flags & IORESOURCE_MEM_WRITEABLE))
- result |= IORESOURCE_READONLY;
- if (mem->flags & IORESOURCE_MEM_CACHEABLE)
- result |= IORESOURCE_CACHEABLE;
- if (mem->flags & IORESOURCE_MEM_RANGELENGTH)
- result |= IORESOURCE_RANGELENGTH;
- if (mem->flags & IORESOURCE_MEM_SHADOWABLE)
- result |= IORESOURCE_SHADOWABLE;
- return result;
- }
- static unsigned int isapnp_irq_resource_flags(struct isapnp_irq *irq)
- {
- return irq->flags | IORESOURCE_IRQ | IORESOURCE_AUTO;
- }
- static unsigned int isapnp_port_resource_flags(struct isapnp_port *port)
- {
- return port->flags | IORESOURCE_IO | IORESOURCE_AUTO;
- }
- static int isapnp_config_prepare(struct pnp_dev *dev)
- {
- struct isapnp_resources *res, *resa;
- struct isapnp_port *port;
- struct isapnp_irq *irq;
- struct isapnp_dma *dma;
- struct isapnp_mem *mem;
- int port_count, port_count1;
- int irq_count, irq_count1;
- int dma_count, dma_count1;
- int mem_count, mem_count1;
- int idx;
- if (dev == NULL)
- return -EINVAL;
- if (dev->active) // || dev->ro)
- return -EBUSY;
- for (idx = 0; idx < DEVICE_COUNT_IRQ; idx++) {
- dev->irq_resource[idx].name = NULL;
- dev->irq_resource[idx].start = 0;
- dev->irq_resource[idx].end = 0;
- dev->irq_resource[idx].flags = 0;
- }
- for (idx = 0; idx < DEVICE_COUNT_DMA; idx++) {
- dev->dma_resource[idx].name = NULL;
- dev->dma_resource[idx].start = 0;
- dev->dma_resource[idx].end = 0;
- dev->dma_resource[idx].flags = 0;
- }
- for (idx = 0; idx < DEVICE_COUNT_RESOURCE; idx++) {
- dev->resource[idx].name = NULL;
- dev->resource[idx].start = 0;
- dev->resource[idx].end = 0;
- dev->resource[idx].flags = 0;
- }
- port_count = irq_count = dma_count = mem_count = 0;
- for (res = (struct isapnp_resources *)dev->sysdata; res; res = res->next) {
- port_count1 = irq_count1 = dma_count1 = mem_count1 = 0;
- for (resa = res; resa; resa = resa->alt) {
- for (port = resa->port, idx = 0; port; port = port->next, idx++) {
- if (dev->resource[port_count + idx].flags == 0) {
- dev->resource[port_count + idx].flags = isapnp_port_resource_flags(port);
- dev->resource[port_count + idx].end = port->size;
- }
- }
- if (port_count1 < idx)
- port_count1 = idx;
- for (irq = resa->irq, idx = 0; irq; irq = irq->next, idx++) {
- int count = irq_count + idx;
- if (count < DEVICE_COUNT_IRQ) {
- if (dev->irq_resource[count].flags == 0) {
- dev->irq_resource[count].flags = isapnp_irq_resource_flags(irq);
- }
- }
-
- }
- if (irq_count1 < idx)
- irq_count1 = idx;
- for (dma = resa->dma, idx = 0; dma; dma = dma->next, idx++)
- if (dev->dma_resource[idx].flags == 0) {
- dev->dma_resource[idx].flags = isapnp_dma_resource_flags(dma);
- }
- if (dma_count1 < idx)
- dma_count1 = idx;
- for (mem = resa->mem, idx = 0; mem; mem = mem->next, idx++)
- if (dev->resource[mem_count + idx + 8].flags == 0) {
- dev->resource[mem_count + idx + 8].flags = isapnp_mem_resource_flags(mem);
- }
- if (mem_count1 < idx)
- mem_count1 = idx;
- }
- port_count += port_count1;
- irq_count += irq_count1;
- dma_count += dma_count1;
- mem_count += mem_count1;
- }
- return 0;
- }
- struct isapnp_cfgtmp {
- struct isapnp_port *port[8];
- struct isapnp_irq *irq[2];
- struct isapnp_dma *dma[2];
- struct isapnp_mem *mem[4];
- struct pnp_dev *request;
- struct pnp_dev result;
- };
- static int isapnp_alternative_switch(struct isapnp_cfgtmp *cfg,
- struct isapnp_resources *from,
- struct isapnp_resources *to)
- {
- int tmp, tmp1;
- struct isapnp_port *port;
- struct isapnp_irq *irq;
- struct isapnp_dma *dma;
- struct isapnp_mem *mem;
- if (!cfg)
- return -EINVAL;
- /* process port settings */
- for (tmp = 0; tmp < 8; tmp++) {
- if (!(cfg->request->resource[tmp].flags & IORESOURCE_AUTO))
- continue; /* don't touch */
- port = cfg->port[tmp];
- if (!port) {
- cfg->port[tmp] = port = isapnp_find_port(cfg->request, tmp);
- if (!port)
- return -EINVAL;
- }
- if (from && port->res == from) {
- while (port->res != to) {
- if (!port->res->alt)
- return -EINVAL;
- port = port->res->alt->port;
- for (tmp1 = tmp; tmp1 > 0 && port; tmp1--)
- port = port->next;
- cfg->port[tmp] = port;
- if (!port)
- return -ENOENT;
- cfg->result.resource[tmp].flags = isapnp_port_resource_flags(port);
- }
- }
- }
- /* process irq settings */
- for (tmp = 0; tmp < 2; tmp++) {
- if (!(cfg->request->irq_resource[tmp].flags & IORESOURCE_AUTO))
- continue; /* don't touch */
- irq = cfg->irq[tmp];
- if (!irq) {
- cfg->irq[tmp] = irq = isapnp_find_irq(cfg->request, tmp);
- if (!irq)
- return -EINVAL;
- }
- if (from && irq->res == from) {
- while (irq->res != to) {
- if (!irq->res->alt)
- return -EINVAL;
- irq = irq->res->alt->irq;
- for (tmp1 = tmp; tmp1 > 0 && irq; tmp1--)
- irq = irq->next;
- cfg->irq[tmp] = irq;
- if (!irq)
- return -ENOENT;
- cfg->result.irq_resource[tmp].flags = isapnp_irq_resource_flags(irq);
- }
- }
- }
- /* process dma settings */
- for (tmp = 0; tmp < 2; tmp++) {
- if (!(cfg->request->dma_resource[tmp].flags & IORESOURCE_AUTO))
- continue; /* don't touch */
- dma = cfg->dma[tmp];
- if (!dma) {
- cfg->dma[tmp] = dma = isapnp_find_dma(cfg->request, tmp);
- if (!dma)
- return -EINVAL;
- }
- if (from && dma->res == from) {
- while (dma->res != to) {
- if (!dma->res->alt)
- return -EINVAL;
- dma = dma->res->alt->dma;
- for (tmp1 = tmp; tmp1 > 0 && dma; tmp1--)
- dma = dma->next;
- cfg->dma[tmp] = dma;
- if (!dma)
- return -ENOENT;
- cfg->result.dma_resource[tmp].flags = isapnp_dma_resource_flags(dma);
- }
- }
- }
- /* process memory settings */
- for (tmp = 0; tmp < 4; tmp++) {
- if (!(cfg->request->resource[tmp + 8].flags & IORESOURCE_AUTO))
- continue; /* don't touch */
- mem = cfg->mem[tmp];
- if (!mem) {
- cfg->mem[tmp] = mem = isapnp_find_mem(cfg->request, tmp);
- if (!mem)
- return -EINVAL;
- }
- if (from && mem->res == from) {
- while (mem->res != to) {
- if (!mem->res->alt)
- return -EINVAL;
- mem = mem->res->alt->mem;
- for (tmp1 = tmp; tmp1 > 0 && mem; tmp1--)
- mem = mem->next;
- cfg->mem[tmp] = mem;
- if (!mem)
- return -ENOENT;
- cfg->result.resource[tmp + 8].flags = isapnp_mem_resource_flags(mem);
- }
- }
- }
- return 0;
- }
- static int isapnp_check_port(struct isapnp_cfgtmp *cfg, int port, int size, int idx)
- {
- int i, tmp, rport, rsize;
- struct isapnp_port *xport;
- struct pnp_dev *dev;
- if (check_region(port, size))
- return 1;
- for (i = 0; i < 8; i++) {
- rport = isapnp_reserve_io[i << 1];
- rsize = isapnp_reserve_io[(i << 1) + 1];
- if (port >= rport && port < rport + rsize)
- return 1;
- if (port + size > rport && port + size < (rport + rsize) - 1)
- return 1;
- }
- for (dev = isapnp_devices; dev; dev = dev->next) {
- if (dev->active) {
- for (tmp = 0; tmp < 8; tmp++) {
- if (dev->resource[tmp].flags) {
- rport = dev->resource[tmp].start;
- rsize = (dev->resource[tmp].end - rport) + 1;
- if (port >= rport && port < rport + rsize)
- return 1;
- if (port + size > rport && port + size < (rport + rsize) - 1)
- return 1;
- }
- }
- }
- }
- for (i = 0; i < 8; i++) {
- unsigned int flags;
- if (i == idx)
- continue;
- flags = cfg->request->resource[i].flags;
- if (!flags)
- continue;
- tmp = cfg->request->resource[i].start;
- if (flags & IORESOURCE_AUTO) { /* auto */
- xport = cfg->port[i];
- if (!xport)
- return 1;
- if (cfg->result.resource[i].flags & IORESOURCE_AUTO)
- continue;
- tmp = cfg->result.resource[i].start;
- if (tmp + xport->size >= port && tmp <= port + xport->size)
- return 1;
- continue;
- }
- if (port == tmp)
- return 1;
- xport = isapnp_find_port(cfg->request, i);
- if (!xport)
- return 1;
- if (tmp + xport->size >= port && tmp <= port + xport->size)
- return 1;
- }
- return 0;
- }
- static int isapnp_valid_port(struct isapnp_cfgtmp *cfg, int idx)
- {
- int err;
- unsigned long *value1, *value2;
- struct isapnp_port *port;
- if (!cfg || idx < 0 || idx > 7)
- return -EINVAL;
- if (!(cfg->result.resource[idx].flags & IORESOURCE_AUTO)) /* don't touch */
- return 0;
- __again:
- port = cfg->port[idx];
- if (!port)
- return -EINVAL;
- value1 = &cfg->result.resource[idx].start;
- value2 = &cfg->result.resource[idx].end;
- if (cfg->result.resource[idx].flags & IORESOURCE_AUTO) {
- cfg->result.resource[idx].flags &= ~IORESOURCE_AUTO;
- *value1 = port->min;
- *value2 = port->min + port->size - 1;
- if (!isapnp_check_port(cfg, *value1, port->size, idx))
- return 0;
- }
- do {
- *value1 += port->align;
- *value2 = *value1 + port->size - 1;
- if (*value1 > port->max || !port->align) {
- if (port->res && port->res->alt) {
- if ((err = isapnp_alternative_switch(cfg, port->res, port->res->alt))<0)
- return err;
- goto __again;
- }
- return -ENOENT;
- }
- } while (isapnp_check_port(cfg, *value1, port->size, idx));
- return 0;
- }
- static void isapnp_test_handler(int irq, void *dev_id, struct pt_regs *regs)
- {
- }
- static int isapnp_check_interrupt(struct isapnp_cfgtmp *cfg, int irq, int idx)
- {
- int i;
- struct pnp_dev *dev;
- if (irq < 0 || irq > 15)
- return 1;
- for (i = 0; i < 16; i++) {
- if (isapnp_reserve_irq[i] == irq)
- return 1;
- }
- for (dev = isapnp_devices; dev; dev = dev->next) {
- if (dev->active) {
- if (dev->irq_resource[0].start == irq ||
- dev->irq_resource[1].start == irq)
- return 1;
- }
- }
- if (request_irq(irq, isapnp_test_handler, SA_INTERRUPT, "isapnp", NULL))
- return 1;
- free_irq(irq, NULL);
- for (i = 0; i < DEVICE_COUNT_IRQ; i++) {
- if (i == idx)
- continue;
- if (!cfg->result.irq_resource[i].flags)
- continue;
- if (cfg->result.irq_resource[i].flags & IORESOURCE_AUTO)
- continue;
- if (cfg->result.irq_resource[i].start == irq)
- return 1;
- }
- return 0;
- }
- static int isapnp_valid_irq(struct isapnp_cfgtmp *cfg, int idx)
- {
- /* IRQ priority: this table is good for i386 */
- static unsigned short xtab[16] = {
- 5, 10, 11, 12, 9, 14, 15, 7, 3, 4, 13, 0, 1, 6, 8, 2
- };
- int err, i;
- unsigned long *value1, *value2;
- struct isapnp_irq *irq;
- if (!cfg || idx < 0 || idx > 1)
- return -EINVAL;
- if (!(cfg->result.irq_resource[idx].flags & IORESOURCE_AUTO))
- return 0;
- __again:
- irq = cfg->irq[idx];
- if (!irq)
- return -EINVAL;
- value1 = &cfg->result.irq_resource[idx].start;
- value2 = &cfg->result.irq_resource[idx].end;
- if (cfg->result.irq_resource[idx].flags & IORESOURCE_AUTO) {
- for (i = 0; i < 16 && !(irq->map & (1<<xtab[i])); i++);
- if (i >= 16)
- return -ENOENT;
- cfg->result.irq_resource[idx].flags &= ~IORESOURCE_AUTO;
- if (!isapnp_check_interrupt(cfg, *value1 = *value2 = xtab[i], idx))
- return 0;
- }
- do {
- for (i = 0; i < 16 && xtab[i] != *value1; i++);
- for (i++; i < 16 && !(irq->map & (1<<xtab[i])); i++);
- if (i >= 16) {
- if (irq->res && irq->res->alt) {
- if ((err = isapnp_alternative_switch(cfg, irq->res, irq->res->alt))<0)
- return err;
- goto __again;
- }
- return -ENOENT;
- } else {
- *value1 = *value2 = xtab[i];
- }
- } while (isapnp_check_interrupt(cfg, *value1, idx));
- return 0;
- }
- static int isapnp_check_dma(struct isapnp_cfgtmp *cfg, int dma, int idx)
- {
- int i;
- struct pnp_dev *dev;
- if (dma < 0 || dma == 4 || dma > 7)
- return 1;
- for (i = 0; i < 8; i++) {
- if (isapnp_reserve_dma[i] == dma)
- return 1;
- }
- for (dev = isapnp_devices; dev; dev = dev->next) {
- if (dev->active) {
- if (dev->dma_resource[0].start == dma || dev->dma_resource[1].start == dma)
- return 1;
- }
- }
- if (request_dma(dma, "isapnp"))
- return 1;
- free_dma(dma);
- for (i = 0; i < 2; i++) {
- if (i == idx)
- continue;
- if (!cfg->result.dma_resource[i].flags ||
- (cfg->result.dma_resource[i].flags & IORESOURCE_AUTO))
- continue;
- if (cfg->result.dma_resource[i].start == dma)
- return 1;
- }
- return 0;
- }
- static int isapnp_valid_dma(struct isapnp_cfgtmp *cfg, int idx)
- {
- int err, i;
- unsigned long *value1, *value2;
- struct isapnp_dma *dma;
- if (!cfg || idx < 0 || idx > 1)
- return -EINVAL;
- if (!(cfg->result.dma_resource[idx].flags & IORESOURCE_AUTO)) /* don't touch */
- return 0;
- __again:
- dma = cfg->dma[idx];
- if (!dma)
- return -EINVAL;
- value1 = &cfg->result.dma_resource[idx].start;
- value2 = &cfg->result.dma_resource[idx].end;
- if (cfg->result.dma_resource[idx].flags & IORESOURCE_AUTO) {
- for (i = 0; i < 8 && !(dma->map & (1<<i)); i++);
- if (i >= 8)
- return -ENOENT;
- cfg->result.dma_resource[idx].flags &= ~IORESOURCE_AUTO;
- if (!isapnp_check_dma(cfg, *value1 = *value2 = i, idx))
- return 0;
- }
- do {
- for (i = *value1 + 1; i < 8 && !(dma->map & (1<<i)); i++);
- if (i >= 8) {
- if (dma->res && dma->res->alt) {
- if ((err = isapnp_alternative_switch(cfg, dma->res, dma->res->alt))<0)
- return err;
- goto __again;
- }
- return -ENOENT;
- } else {
- *value1 = *value2 = i;
- }
- } while (isapnp_check_dma(cfg, *value1, idx));
- return 0;
- }
- static int isapnp_check_mem(struct isapnp_cfgtmp *cfg, unsigned int addr, unsigned int size, int idx)
- {
- int i, tmp;
- unsigned int raddr, rsize;
- struct pnp_dev *dev;
- struct isapnp_mem *xmem;
- for (i = 0; i < 8; i++) {
- raddr = (unsigned int)isapnp_reserve_mem[i << 1];
- rsize = (unsigned int)isapnp_reserve_mem[(i << 1) + 1];
- if (addr >= raddr && addr < raddr + rsize)
- return 1;
- if (addr + size > raddr && addr + size < (raddr + rsize) - 1)
- return 1;
- // if (__check_region(&iomem_resource, addr, size))
- if (check_region(addr, size))
- return 1;
- }
- for (dev = isapnp_devices; dev; dev = dev->next) {
- if (dev->active) {
- for (tmp = 0; tmp < 4; tmp++) {
- if (dev->resource[tmp].flags) {
- raddr = dev->resource[tmp + 8].start;
- rsize = (dev->resource[tmp + 8].end - raddr) + 1;
- if (addr >= raddr && addr < raddr + rsize)
- return 1;
- if (addr + size > raddr && addr + size < (raddr + rsize) - 1)
- return 1;
- }
- }
- }
- }
- for (i = 0; i < 4; i++) {
- unsigned int flags = cfg->request->resource[i + 8].flags;
- if (i == idx)
- continue;
- if (!flags)
- continue;
- tmp = cfg->result.resource[i + 8].start;
- if (flags & IORESOURCE_AUTO) { /* auto */
- xmem = cfg->mem[i];
- if (!xmem)
- return 1;
- if (cfg->result.resource[i + 8].flags & IORESOURCE_AUTO)
- continue;
- if (tmp + xmem->size >= addr && tmp <= addr + xmem->size)
- return 1;
- continue;
- }
- if (addr == tmp)
- return 1;
- xmem = isapnp_find_mem(cfg->request, i);
- if (!xmem)
- return 1;
- if (tmp + xmem->size >= addr && tmp <= addr + xmem->size)
- return 1;
- }
- return 0;
- }
- static int isapnp_valid_mem(struct isapnp_cfgtmp *cfg, int idx)
- {
- int err;
- unsigned long *value1, *value2;
- struct isapnp_mem *mem;
- if (!cfg || idx < 0 || idx > 3)
- return -EINVAL;
- if (!(cfg->result.resource[idx + 8].flags & IORESOURCE_AUTO)) /* don't touch */
- return 0;
- __again:
- mem = cfg->mem[idx];
- if (!mem)
- return -EINVAL;
- value1 = &cfg->result.resource[idx].start;
- value2 = &cfg->result.resource[idx].end;
- if (cfg->result.resource[idx + 8].flags & IORESOURCE_AUTO) {
- cfg->result.resource[idx + 8].flags &= ~IORESOURCE_AUTO;
- *value1 = mem->min;
- *value2 = mem->min + mem->size - 1;
- if (!isapnp_check_mem(cfg, *value1, mem->size, idx))
- return 0;
- }
- do {
- *value1 += mem->align;
- *value2 = *value1 + mem->size - 1;
- if (*value1 >= 8 || !mem->align) {
- if (mem->res && mem->res->alt) {
- if ((err = isapnp_alternative_switch(cfg, mem->res, mem->res->alt))<0)
- return err;
- goto __again;
- }
- return -ENOENT;
- }
- } while (isapnp_check_mem(cfg, *value1, mem->size, idx));
- return 0;
- }
- static int isapnp_check_valid(struct isapnp_cfgtmp *cfg)
- {
- int tmp;
-
- for (tmp = 0; tmp < 8; tmp++)
- if (cfg->result.resource[tmp].flags & IORESOURCE_AUTO)
- return -EAGAIN;
- for (tmp = 0; tmp < 2; tmp++)
- if (cfg->result.irq_resource[tmp].flags & IORESOURCE_AUTO)
- return -EAGAIN;
- for (tmp = 0; tmp < 2; tmp++)
- if (cfg->result.dma_resource[tmp].flags & IORESOURCE_AUTO)
- return -EAGAIN;
- for (tmp = 0; tmp < 4; tmp++)
- if (cfg->result.resource[tmp + 8].flags & IORESOURCE_AUTO)
- return -EAGAIN;
- return 0;
- }
- static int isapnp_config_activate(struct pnp_dev *dev)
- {
- struct isapnp_cfgtmp cfg;
- int tmp, fauto, err;
-
- if (!dev)
- return -EINVAL;
- if (dev->active)
- return -EBUSY;
- memset(&cfg, 0, sizeof(cfg));
- cfg.request = dev;
- memcpy(&cfg.result, dev, sizeof(struct pnp_dev));
- /* check if all values are set, otherwise try auto-configuration */
- for (tmp = fauto = 0; !fauto && tmp < 8; tmp++) {
- if (dev->resource[tmp].flags & IORESOURCE_AUTO)
- fauto++;
- }
- for (tmp = 0; !fauto && tmp < 2; tmp++) {
- if (dev->irq_resource[tmp].flags & IORESOURCE_AUTO)
- fauto++;
- }
- for (tmp = 0; !fauto && tmp < 2; tmp++) {
- if (dev->dma_resource[tmp].flags & IORESOURCE_AUTO)
- fauto++;
- }
- for (tmp = 0; !fauto && tmp < 4; tmp++) {
- if (dev->resource[tmp + 8].flags & IORESOURCE_AUTO)
- fauto++;
- }
- if (!fauto)
- goto __skip_auto;
- /* set variables to initial values */
- if ((err = isapnp_alternative_switch(&cfg, NULL, NULL))<0)
- return err;
- /* find first valid configuration */
- fauto = 0;
- do {
- for (tmp = 0; tmp < 8 && cfg.result.resource[tmp].flags; tmp++)
- if ((err = isapnp_valid_port(&cfg, tmp))<0)
- return err;
- for (tmp = 0; tmp < 2 && cfg.result.irq_resource[tmp].flags; tmp++)
- if ((err = isapnp_valid_irq(&cfg, tmp))<0)
- return err;
- for (tmp = 0; tmp < 2 && cfg.result.dma_resource[tmp].flags; tmp++)
- if ((err = isapnp_valid_dma(&cfg, tmp))<0)
- return err;
- for (tmp = 0; tmp < 4 && cfg.result.resource[tmp + 8].flags; tmp++)
- if ((err = isapnp_valid_mem(&cfg, tmp))<0)
- return err;
- } while (isapnp_check_valid(&cfg)<0 && fauto++ < 20);
- if (fauto >= 20)
- return -EAGAIN;
- __skip_auto:
- /* we have valid configuration, try configure hardware */
- isapnp_cfg_begin(dev->bus->number, dev->devfn);
- dev->active = 1;
- dev->irq_resource[0] = cfg.result.irq_resource[0];
- dev->irq_resource[1] = cfg.result.irq_resource[1];
- dev->dma_resource[0] = cfg.result.dma_resource[0];
- dev->dma_resource[1] = cfg.result.dma_resource[1];
- for (tmp = 0; tmp < 12; tmp++) {
- dev->resource[tmp] = cfg.result.resource[tmp];
- }
- for (tmp = 0; tmp < 8 && dev->resource[tmp].flags; tmp++)
- isapnp_write_word(ISAPNP_CFG_PORT+(tmp<<1), dev->resource[tmp].start);
- for (tmp = 0; tmp < 2 && dev->irq_resource[tmp].flags; tmp++) {
- int irq = dev->irq_resource[tmp].start;
- if (irq == 2)
- irq = 9;
- isapnp_write_byte(ISAPNP_CFG_IRQ+(tmp<<1), irq);
- }
- for (tmp = 0; tmp < 2 && dev->dma_resource[tmp].flags; tmp++)
- isapnp_write_byte(ISAPNP_CFG_DMA+tmp, dev->dma_resource[tmp].start);
- for (tmp = 0; tmp < 4 && dev->resource[tmp+8].flags; tmp++)
- isapnp_write_word(ISAPNP_CFG_MEM+(tmp<<2), (dev->resource[tmp + 8].start >> 8) & 0xffff);
- isapnp_activate(dev->devfn);
- isapnp_cfg_end();
- return 0;
- }
- static int isapnp_config_deactivate(struct pnp_dev *dev)
- {
- if (!dev || !dev->active)
- return -EINVAL;
- isapnp_cfg_begin(dev->bus->number, dev->devfn);
- isapnp_deactivate(dev->devfn);
- dev->active = 0;
- isapnp_cfg_end();
- return 0;
- }
- void isapnp_resource_change(struct resource *resource,
- unsigned long start,
- unsigned long size)
- {
- if (resource == NULL)
- return;
- resource->flags &= ~IORESOURCE_AUTO;
- resource->start = start;
- resource->end = start + size - 1;
- }
- /*
- * Inititialization.
- */
- #ifdef MODULE
- static void isapnp_free_port(struct isapnp_port *port)
- {
- struct isapnp_port *next;
- while (port) {
- next = port->next;
- kfree(port);
- port = next;
- }
- }
- static void isapnp_free_irq(struct isapnp_irq *irq)
- {
- struct isapnp_irq *next;
- while (irq) {
- next = irq->next;
- kfree(irq);
- irq = next;
- }
- }
- static void isapnp_free_dma(struct isapnp_dma *dma)
- {
- struct isapnp_dma *next;
- while (dma) {
- next = dma->next;
- kfree(dma);
- dma = next;
- }
- }
- static void isapnp_free_mem(struct isapnp_mem *mem)
- {
- struct isapnp_mem *next;
- while (mem) {
- next = mem->next;
- kfree(mem);
- mem = next;
- }
- }
- static void isapnp_free_mem32(struct isapnp_mem32 *mem32)
- {
- struct isapnp_mem32 *next;
- while (mem32) {
- next = mem32->next;
- kfree(mem32);
- mem32 = next;
- }
- }
- static void isapnp_free_resources(struct isapnp_resources *resources, int alt)
- {
- struct isapnp_resources *next;
- while (resources) {
- next = alt ? resources->alt : resources->next;
- isapnp_free_port(resources->port);
- isapnp_free_irq(resources->irq);
- isapnp_free_dma(resources->dma);
- isapnp_free_mem(resources->mem);
- isapnp_free_mem32(resources->mem32);
- if (!alt && resources->alt)
- isapnp_free_resources(resources->alt, 1);
- kfree(resources);
- resources = next;
- }
- }
- static void isapnp_free_device(struct pnp_dev *dev)
- {
- struct pnp_dev *next;
- while (dev) {
- next = dev->sibling;
- isapnp_free_resources((struct isapnp_resources *)dev->sysdata, 0);
- kfree(dev);
- dev = next;
- }
- }
- #endif /* MODULE */
- static void isapnp_free_all_resources(void)
- {
- #ifdef MODULE
- struct pnp_bus *card, *cardnext;
- #endif
- #ifdef ISAPNP_REGION_OK
- // release_resource(pidxr_res);
- release_region(_PIDXR, 1);
- #endif
- // release_resource(pnpwrp_res);
- release_region(_PNPWRP, 1);
- if (isapnp_rdp >= 0x203 && isapnp_rdp <= 0x3ff)
- // release_resource(isapnp_rdp_res);
- release_region(isapnp_rdp, 1);
- #ifdef MODULE
- for (card = isapnp_cards; card; card = cardnext) {
- cardnext = card->next;
- isapnp_free_device(card->devices);
- kfree(card);
- }
- #ifdef CONFIG_PROC_FS
- isapnp_proc_done();
- #endif
- #endif
- }
- static int __init isapnp_do_reserve_irq(int irq)
- {
- int i;
-
- if (irq < 0 || irq > 15)
- return -EINVAL;
- for (i = 0; i < 16; i++) {
- if (isapnp_reserve_irq[i] == irq)
- return 0;
- }
- for (i = 0; i < 16; i++) {
- if (isapnp_reserve_irq[i] < 0) {
- isapnp_reserve_irq[i] = irq;
- #ifdef ISAPNP_DEBUG
- printk("IRQ %i is reserved now.n", irq);
- #endif
- return 0;
- }
- }
- return -ENOMEM;
- }
- #ifdef CONFIG_PCI
- struct pnp_dev *
- pnp_find_slot(unsigned int bus, unsigned int devfn)
- {
- struct pnp_dev *dev;
- for(dev=isapnp_devices; dev; dev=dev->next)
- if (dev->bus->number == bus && dev->devfn == devfn)
- break;
- return dev;
- }
- static void __init isapnp_pci_init(void)
- {
- int devfn;
- struct pnp_dev *dev;
-
- for (devfn = 0; devfn < 255; devfn++) {
- dev = pnp_find_slot(0, devfn);
- if (dev != NULL)
- break;
- }
- if (dev == NULL)
- return;
- while (dev) {
- #ifdef ISAPNP_DEBUG
- printk("PCI: reserved IRQ: %in", dev->irq);
- #endif
- if (dev->irq > 0)
- isapnp_do_reserve_irq(dev->irq);
- dev = dev->next;
- }
- }
- #endif /* CONFIG_PCI */
- EXPORT_SYMBOL(isapnp_present);
- EXPORT_SYMBOL(isapnp_cfg_begin);
- EXPORT_SYMBOL(isapnp_cfg_end);
- EXPORT_SYMBOL(isapnp_read_byte);
- EXPORT_SYMBOL(isapnp_read_word);
- EXPORT_SYMBOL(isapnp_read_dword);
- EXPORT_SYMBOL(isapnp_write_byte);
- EXPORT_SYMBOL(isapnp_write_word);
- EXPORT_SYMBOL(isapnp_write_dword);
- EXPORT_SYMBOL(isapnp_wake);
- EXPORT_SYMBOL(isapnp_device);
- EXPORT_SYMBOL(isapnp_activate);
- EXPORT_SYMBOL(isapnp_deactivate);
- EXPORT_SYMBOL(isapnp_find_card);
- EXPORT_SYMBOL(isapnp_find_dev);
- EXPORT_SYMBOL(isapnp_resource_change);
- int __init isapnp_init(void)
- {
- int cards;
- struct pnp_bus *card;
- struct pnp_dev *dev;
- if (isapnp_disable) {
- isapnp_detected = 0;
- printk("isapnp: ISA Plug & Play support disabledn");
- return 0;
- }
- #ifdef ISAPNP_REGION_OK
- request_region(_PIDXR, 1, "isapnp index");
- // pidxr_res=request_region(_PIDXR, 1, "isapnp index");
- // if(!pidxr_res) {
- // printk("isapnp: Index Register 0x%x already usedn", _PIDXR);
- // return -EBUSY;
- // }
- #endif
- request_region(_PNPWRP, 1, "isapnp write");
- // pnpwrp_res=request_region(_PNPWRP, 1, "isapnp write");
- // if(!pnpwrp_res) {
- // printk("isapnp: Write Data Register 0x%x already usedn", _PNPWRP);
- // return -EBUSY;
- // }
-
- /*
- * Print a message. The existing ISAPnP code is hanging machines
- * so let the user know where.
- */
-
- printk("isapnp: Scanning for Pnp cards...n");
- if (isapnp_rdp >= 0x203 && isapnp_rdp <= 0x3ff) {
- isapnp_rdp |= 3;
- request_region(isapnp_rdp, 1, "isapnp read");
- // isapnp_rdp_res=request_region(isapnp_rdp, 1, "isapnp read");
- // if(!isapnp_rdp_res) {
- // printk("isapnp: Read Data Register 0x%x already usedn", isapnp_rdp);
- // return -EBUSY;
- // }
- isapnp_set_rdp();
- }
- isapnp_detected = 1;
- if (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff) {
- cards = isapnp_isolate();
- if (cards < 0 ||
- (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff)) {
- isapnp_free_all_resources();
- isapnp_detected = 0;
- printk("isapnp: No Plug & Play device foundn");
- return 0;
- }
- request_region(isapnp_rdp, 1, "isapnp read");
- // isapnp_rdp_res=request_region(isapnp_rdp, 1, "isapnp read");
- }
- isapnp_build_device_list();
- cards = 0;
- for (card = isapnp_cards; card; card = card->next)
- cards++;
- if (isapnp_verbose) {
- for (card = isapnp_cards; card; card = card->next) {
- printk( "isapnp: Card '%s'n", card->name[0]?card->name:"Unknown");
- if (isapnp_verbose < 2)
- continue;
- for (dev = card->devices; dev; dev = dev->next)
- printk("isapnp: Device '%s'n", dev->name[0]?card->name:"Unknown");
- }
- }
- if (cards) {
- printk("isapnp: %i Plug & Play card%s detected totaln", cards, cards>1?"s":"");
- } else {
- printk("isapnp: No Plug & Play card foundn");
- }
- #ifdef CONFIG_PCI
- if (!isapnp_skip_pci_scan)
- isapnp_pci_init();
- #endif
- #ifdef CONFIG_PROC_FS
- isapnp_proc_init();
- #endif
- return 0;
- }
- #ifdef MODULE
- int init_module(void)
- {
- return isapnp_init();
- }
- void cleanup_module(void)
- {
- if (isapnp_detected)
- isapnp_free_all_resources();
- }
- #endif