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Commit 40ca599a authored by Adam Belay's avatar Adam Belay
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[PNP] Resource Management Cleanups and Updates 

This patch does the following...
1.) changes struct pnp_resources to pnp_option for clarity
2.) greatly cleans up resource option registration
3.) removes some of the current conflict prevention code in
order to increase flexibility, (users will have more control)
4.) various manager cleanups, resulting code is more efficient
5.) fixes the locking bugs many have reported (now uses a mutex)
6.) removes the conflict displaying interface
 - it is better to handle such things in user space
7.) also many misc. cleanups
parent 015744f5
Hide whitespace changes
Inline Side-by-side
Showing with 737 additions and 1323 deletions
drivers/pnp/base.h
View file @ 40ca599a
......@@ -4,29 +4,11 @@ void *pnp_alloc(long size);
int pnp_interface_attach_device(struct pnp_dev *dev);
void pnp_name_device(struct pnp_dev *dev);
void pnp_fixup_device(struct pnp_dev *dev);
void pnp_free_resources(struct pnp_resources *resources);
void pnp_free_option(struct pnp_option *option);
int __pnp_add_device(struct pnp_dev *dev);
void __pnp_remove_device(struct pnp_dev *dev);
/* resource conflict types */
#define CONFLICT_TYPE_NONE 0x0000 /* there are no conflicts, other than those in the link */
#define CONFLICT_TYPE_RESERVED 0x0001 /* the resource requested was reserved */
#define CONFLICT_TYPE_IN_USE 0x0002 /* there is a conflict because the resource is in use */
#define CONFLICT_TYPE_PCI 0x0004 /* there is a conflict with a pci device */
#define CONFLICT_TYPE_INVALID 0x0008 /* the resource requested is invalid */
#define CONFLICT_TYPE_INTERNAL 0x0010 /* resources within the device conflict with each ohter */
#define CONFLICT_TYPE_PNP_WARM 0x0020 /* there is a conflict with a pnp device that is active */
#define CONFLICT_TYPE_PNP_COLD 0x0040 /* there is a conflict with a pnp device that is disabled */
/* conflict search modes */
#define SEARCH_WARM 1 /* check for conflicts with active devices */
#define SEARCH_COLD 0 /* check for conflicts with disabled devices */
struct pnp_dev * pnp_check_port_conflicts(struct pnp_dev * dev, int idx, int mode);
int pnp_check_port(struct pnp_dev * dev, int idx);
struct pnp_dev * pnp_check_mem_conflicts(struct pnp_dev * dev, int idx, int mode);
int pnp_check_mem(struct pnp_dev * dev, int idx);
struct pnp_dev * pnp_check_irq_conflicts(struct pnp_dev * dev, int idx, int mode);
int pnp_check_irq(struct pnp_dev * dev, int idx);
struct pnp_dev * pnp_check_dma_conflicts(struct pnp_dev * dev, int idx, int mode);
int pnp_check_dma(struct pnp_dev * dev, int idx);
drivers/pnp/core.c
View file @ 40ca599a
......@@ -104,8 +104,8 @@ static void pnp_free_ids(struct pnp_dev *dev)
static void pnp_release_device(struct device *dmdev)
{
struct pnp_dev * dev = to_pnp_dev(dmdev);
if (dev->possible)
pnp_free_resources(dev->possible);
pnp_free_option(dev->independent);
pnp_free_option(dev->dependent);
pnp_free_ids(dev);
kfree(dev);
}
......@@ -122,7 +122,7 @@ int __pnp_add_device(struct pnp_dev *dev)
list_add_tail(&dev->global_list, &pnp_global);
list_add_tail(&dev->protocol_list, &dev->protocol->devices);
spin_unlock(&pnp_lock);
pnp_auto_config_dev(dev);
ret = device_register(&dev->dev);
if (ret == 0)
pnp_interface_attach_device(dev);
......
drivers/pnp/interface.c
View file @ 40ca599a
......@@ -168,7 +168,8 @@ static void pnp_print_mem(pnp_info_buffer_t *buffer, char *space, struct pnp_mem
pnp_printf(buffer, ", %s\n", s);
}
static void pnp_print_resources(pnp_info_buffer_t *buffer, char *space, struct pnp_resources *res, int dep)
static void pnp_print_option(pnp_info_buffer_t *buffer, char *space,
struct pnp_option *option, int dep)
{
char *s;
struct pnp_port *port;
......@@ -176,49 +177,55 @@ static void pnp_print_resources(pnp_info_buffer_t *buffer, char *space, struct p
struct pnp_dma *dma;
struct pnp_mem *mem;
switch (res->priority) {
case PNP_RES_PRIORITY_PREFERRED:
s = "preferred";
break;
case PNP_RES_PRIORITY_ACCEPTABLE:
s = "acceptable";
break;
case PNP_RES_PRIORITY_FUNCTIONAL:
s = "functional";
break;
default:
s = "invalid";
}
if (dep > 0)
if (dep) {
switch (option->priority) {
case PNP_RES_PRIORITY_PREFERRED:
s = "preferred";
break;
case PNP_RES_PRIORITY_ACCEPTABLE:
s = "acceptable";
break;
case PNP_RES_PRIORITY_FUNCTIONAL:
s = "functional";
break;
default:
s = "invalid";
}
pnp_printf(buffer, "Dependent: %02i - Priority %s\n",dep, s);
for (port = res->port; port; port = port->next)
}
for (port = option->port; port; port = port->next)
pnp_print_port(buffer, space, port);
for (irq = res->irq; irq; irq = irq->next)
for (irq = option->irq; irq; irq = irq->next)
pnp_print_irq(buffer, space, irq);
for (dma = res->dma; dma; dma = dma->next)
for (dma = option->dma; dma; dma = dma->next)
pnp_print_dma(buffer, space, dma);
for (mem = res->mem; mem; mem = mem->next)
for (mem = option->mem; mem; mem = mem->next)
pnp_print_mem(buffer, space, mem);
}
static ssize_t pnp_show_possible_resources(struct device *dmdev, char *buf)
static ssize_t pnp_show_options(struct device *dmdev, char *buf)
{
struct pnp_dev *dev = to_pnp_dev(dmdev);
struct pnp_resources * res = dev->possible;
int ret, dep = 0;
struct pnp_option * independent = dev->independent;
struct pnp_option * dependent = dev->dependent;
int ret, dep = 1;
pnp_info_buffer_t *buffer = (pnp_info_buffer_t *)
pnp_alloc(sizeof(pnp_info_buffer_t));
if (!buffer)
return -ENOMEM;
buffer->len = PAGE_SIZE;
buffer->buffer = buf;
buffer->curr = buffer->buffer;
while (res){
if (dep == 0)
pnp_print_resources(buffer, "", res, dep);
else
pnp_print_resources(buffer, " ", res, dep);
res = res->dep;
if (independent)
pnp_print_option(buffer, "", independent, 0);
while (dependent){
pnp_print_option(buffer, " ", dependent, dep);
dependent = dependent->next;
dep++;
}
ret = (buffer->curr - buf);
......@@ -226,97 +233,8 @@ static ssize_t pnp_show_possible_resources(struct device *dmdev, char *buf)
return ret;
}
static DEVICE_ATTR(possible,S_IRUGO,pnp_show_possible_resources,NULL);
static void pnp_print_conflict_node(pnp_info_buffer_t *buffer, struct pnp_dev * dev)
{
if (!dev)
return;
pnp_printf(buffer, "'%s'.\n", dev->dev.bus_id);
}
static void pnp_print_conflict_desc(pnp_info_buffer_t *buffer, int conflict)
{
if (!conflict)
return;
pnp_printf(buffer, " Conflict Detected: %2x - ", conflict);
switch (conflict) {
case CONFLICT_TYPE_RESERVED:
pnp_printf(buffer, "manually reserved.\n");
break;
case CONFLICT_TYPE_IN_USE:
pnp_printf(buffer, "currently in use.\n");
break;
case CONFLICT_TYPE_PCI:
pnp_printf(buffer, "PCI device.\n");
break;
case CONFLICT_TYPE_INVALID:
pnp_printf(buffer, "invalid.\n");
break;
case CONFLICT_TYPE_INTERNAL:
pnp_printf(buffer, "another resource on this device.\n");
break;
case CONFLICT_TYPE_PNP_WARM:
pnp_printf(buffer, "active PnP device ");
break;
case CONFLICT_TYPE_PNP_COLD:
pnp_printf(buffer, "disabled PnP device ");
break;
default:
pnp_printf(buffer, "Unknown conflict.\n");
break;
}
}
static void pnp_print_conflict(pnp_info_buffer_t *buffer, struct pnp_dev * dev, int idx, int type)
{
struct pnp_dev * cdev, * wdev = NULL;
int conflict;
switch (type) {
case IORESOURCE_IO:
conflict = pnp_check_port(dev, idx);
if (conflict == CONFLICT_TYPE_PNP_WARM)
wdev = pnp_check_port_conflicts(dev, idx, SEARCH_WARM);
cdev = pnp_check_port_conflicts(dev, idx, SEARCH_COLD);
break;
case IORESOURCE_MEM:
conflict = pnp_check_mem(dev, idx);
if (conflict == CONFLICT_TYPE_PNP_WARM)
wdev = pnp_check_mem_conflicts(dev, idx, SEARCH_WARM);
cdev = pnp_check_mem_conflicts(dev, idx, SEARCH_COLD);
break;
case IORESOURCE_IRQ:
conflict = pnp_check_irq(dev, idx);
if (conflict == CONFLICT_TYPE_PNP_WARM)
wdev = pnp_check_irq_conflicts(dev, idx, SEARCH_WARM);
cdev = pnp_check_irq_conflicts(dev, idx, SEARCH_COLD);
break;
case IORESOURCE_DMA:
conflict = pnp_check_dma(dev, idx);
if (conflict == CONFLICT_TYPE_PNP_WARM)
wdev = pnp_check_dma_conflicts(dev, idx, SEARCH_WARM);
cdev = pnp_check_dma_conflicts(dev, idx, SEARCH_COLD);
break;
default:
return;
}
pnp_print_conflict_desc(buffer, conflict);
if (wdev)
pnp_print_conflict_node(buffer, wdev);
static DEVICE_ATTR(options,S_IRUGO,pnp_show_options,NULL);
if (cdev) {
pnp_print_conflict_desc(buffer, CONFLICT_TYPE_PNP_COLD);
pnp_print_conflict_node(buffer, cdev);
}
}
static ssize_t pnp_show_current_resources(struct device *dmdev, char *buf)
{
......@@ -332,12 +250,6 @@ static ssize_t pnp_show_current_resources(struct device *dmdev, char *buf)
buffer->buffer = buf;
buffer->curr = buffer->buffer;
pnp_printf(buffer,"mode = ");
if (dev->config_mode & PNP_CONFIG_MANUAL)
pnp_printf(buffer,"manual\n");
else
pnp_printf(buffer,"auto\n");
pnp_printf(buffer,"state = ");
if (dev->active)
pnp_printf(buffer,"active\n");
......@@ -350,7 +262,6 @@ static ssize_t pnp_show_current_resources(struct device *dmdev, char *buf)
pnp_printf(buffer," 0x%lx-0x%lx \n",
pnp_port_start(dev, i),
pnp_port_end(dev, i));
pnp_print_conflict(buffer, dev, i, IORESOURCE_IO);
}
}
for (i = 0; i < PNP_MAX_MEM; i++) {
......@@ -359,21 +270,18 @@ static ssize_t pnp_show_current_resources(struct device *dmdev, char *buf)
pnp_printf(buffer," 0x%lx-0x%lx \n",
pnp_mem_start(dev, i),
pnp_mem_end(dev, i));
pnp_print_conflict(buffer, dev, i, IORESOURCE_MEM);
}
}
for (i = 0; i < PNP_MAX_IRQ; i++) {
if (pnp_irq_valid(dev, i)) {
pnp_printf(buffer,"irq");
pnp_printf(buffer," %ld \n", pnp_irq(dev, i));
pnp_print_conflict(buffer, dev, i, IORESOURCE_IRQ);
}
}
for (i = 0; i < PNP_MAX_DMA; i++) {
if (pnp_dma_valid(dev, i)) {
pnp_printf(buffer,"dma");
pnp_printf(buffer," %ld \n", pnp_dma(dev, i));
pnp_print_conflict(buffer, dev, i, IORESOURCE_DMA);
}
}
ret = (buffer->curr - buf);
......@@ -381,7 +289,7 @@ static ssize_t pnp_show_current_resources(struct device *dmdev, char *buf)
return ret;
}
extern int pnp_resolve_conflicts(struct pnp_dev *dev);
extern struct semaphore pnp_res_mutex;
static ssize_t
pnp_set_current_resources(struct device * dmdev, const char * ubuf, size_t count)
......@@ -390,6 +298,12 @@ pnp_set_current_resources(struct device * dmdev, const char * ubuf, size_t count
char *buf = (void *)ubuf;
int retval = 0;
if (dev->status & PNP_ATTACHED) {
retval = -EBUSY;
pnp_info("Device %s cannot be configured because it is in use.", dev->dev.bus_id);
goto done;
}
while (isspace(*buf))
++buf;
if (!strnicmp(buf,"disable",7)) {
......@@ -400,41 +314,23 @@ pnp_set_current_resources(struct device * dmdev, const char * ubuf, size_t count
retval = pnp_activate_dev(dev);
goto done;
}
if (!strnicmp(buf,"reset",5)) {
if (!dev->active)
goto done;
retval = pnp_disable_dev(dev);
if (retval)
if (!strnicmp(buf,"fill",4)) {
if (dev->active)
goto done;
retval = pnp_activate_dev(dev);
retval = pnp_auto_config_dev(dev);
goto done;
}
if (!strnicmp(buf,"auto",4)) {
if (dev->active)
goto done;
pnp_init_resources(&dev->res);
retval = pnp_auto_config_dev(dev);
goto done;
}
if (!strnicmp(buf,"clear",5)) {
if (dev->active)
goto done;
spin_lock(&pnp_lock);
dev->config_mode = PNP_CONFIG_MANUAL;
pnp_init_resource_table(&dev->res);
if (dev->rule)
dev->rule->depnum = 0;
spin_unlock(&pnp_lock);
goto done;
}
if (!strnicmp(buf,"resolve",7)) {
retval = pnp_resolve_conflicts(dev);
goto done;
}
if (!strnicmp(buf,"get",3)) {
spin_lock(&pnp_lock);
if (pnp_can_read(dev))
dev->protocol->get(dev, &dev->res);
spin_unlock(&pnp_lock);
pnp_init_resources(&dev->res);
goto done;
}
if (!strnicmp(buf,"set",3)) {
......@@ -442,9 +338,8 @@ pnp_set_current_resources(struct device * dmdev, const char * ubuf, size_t count
if (dev->active)
goto done;
buf += 3;
spin_lock(&pnp_lock);
dev->config_mode = PNP_CONFIG_MANUAL;
pnp_init_resource_table(&dev->res);
pnp_init_resources(&dev->res);
down(&pnp_res_mutex);
while (1) {
while (isspace(*buf))
++buf;
......@@ -514,7 +409,7 @@ pnp_set_current_resources(struct device * dmdev, const char * ubuf, size_t count
}
break;
}
spin_unlock(&pnp_lock);
up(&pnp_res_mutex);
goto done;
}
done:
......@@ -543,7 +438,7 @@ static DEVICE_ATTR(id,S_IRUGO,pnp_show_current_ids,NULL);
int pnp_interface_attach_device(struct pnp_dev *dev)
{
device_create_file(&dev->dev,&dev_attr_possible);
device_create_file(&dev->dev,&dev_attr_options);
device_create_file(&dev->dev,&dev_attr_resources);
device_create_file(&dev->dev,&dev_attr_id);
return 0;
......
drivers/pnp/isapnp/core.c
View file @ 40ca599a
......@@ -31,6 +31,7 @@
* 2002-06-06 Made the use of dma channel 0 configurable
* Gerald Teschl <gerald.teschl@univie.ac.at>
* 2002-10-06 Ported to PnP Layer - Adam Belay <ambx1@neo.rr.com>
* 2003-08-11 Resource Management Updates - Adam Belay <ambx1@neo.rr.com>
*/
#include <linux/config.h>
......@@ -460,6 +461,7 @@ static struct pnp_dev * __init isapnp_parse_device(struct pnp_card *card, int si
dev->capabilities |= PNP_READ;
dev->capabilities |= PNP_WRITE;
dev->capabilities |= PNP_DISABLE;
pnp_init_resources(&dev->res);
return dev;
}
......@@ -468,8 +470,8 @@ static struct pnp_dev * __init isapnp_parse_device(struct pnp_card *card, int si
* Add IRQ resource to resources list.
*/
static void __init isapnp_add_irq_resource(struct pnp_dev *dev,
int depnum, int size)
static void __init isapnp_parse_irq_resource(struct pnp_option *option,
int size)
{
unsigned char tmp[3];
struct pnp_irq *irq;
......@@ -483,7 +485,7 @@ static void __init isapnp_add_irq_resource(struct pnp_dev *dev,
irq->flags = tmp[2];
else
irq->flags = IORESOURCE_IRQ_HIGHEDGE;
pnp_add_irq_resource(dev, depnum, irq);
pnp_register_irq_resource(option, irq);
return;
}
......@@ -491,8 +493,8 @@ static void __init isapnp_add_irq_resource(struct pnp_dev *dev,
* Add DMA resource to resources list.
*/
static void __init isapnp_add_dma_resource(struct pnp_dev *dev,
int depnum, int size)
static void __init isapnp_parse_dma_resource(struct pnp_option *option,
int size)
{
unsigned char tmp[2];
struct pnp_dma *dma;
......@@ -503,7 +505,7 @@ static void __init isapnp_add_dma_resource(struct pnp_dev *dev,
return;
dma->map = tmp[0];
dma->flags = tmp[1];
pnp_add_dma_resource(dev, depnum, dma);
pnp_register_dma_resource(option, dma);
return;
}
......@@ -511,8 +513,8 @@ static void __init isapnp_add_dma_resource(struct pnp_dev *dev,
* Add port resource to resources list.
*/
static void __init isapnp_add_port_resource(struct pnp_dev *dev,
int depnum, int size)
static void __init isapnp_parse_port_resource(struct pnp_option *option,
int size)
{
unsigned char tmp[7];
struct pnp_port *port;
......@@ -526,7 +528,7 @@ static void __init isapnp_add_port_resource(struct pnp_dev *dev,
port->align = tmp[5];
port->size = tmp[6];
port->flags = tmp[0] ? PNP_PORT_FLAG_16BITADDR : 0;
pnp_add_port_resource(dev,depnum,port);
pnp_register_port_resource(option,port);
return;
}
......@@ -534,8 +536,8 @@ static void __init isapnp_add_port_resource(struct pnp_dev *dev,
* Add fixed port resource to resources list.
*/
static void __init isapnp_add_fixed_port_resource(struct pnp_dev *dev,
int depnum, int size)
static void __init isapnp_parse_fixed_port_resource(struct pnp_option *option,
int size)
{
unsigned char tmp[3];
struct pnp_port *port;
......@@ -548,7 +550,7 @@ static void __init isapnp_add_fixed_port_resource(struct pnp_dev *dev,
port->size = tmp[2];
port->align = 0;
port->flags = PNP_PORT_FLAG_FIXED;
pnp_add_port_resource(dev,depnum,port);
pnp_register_port_resource(option,port);
return;
}
......@@ -556,8 +558,8 @@ static void __init isapnp_add_fixed_port_resource(struct pnp_dev *dev,
* Add memory resource to resources list.
*/
static void __init isapnp_add_mem_resource(struct pnp_dev *dev,
int depnum, int size)
static void __init isapnp_parse_mem_resource(struct pnp_option *option,
int size)
{
unsigned char tmp[9];
struct pnp_mem *mem;
......@@ -571,7 +573,7 @@ static void __init isapnp_add_mem_resource(struct pnp_dev *dev,
mem->align = (tmp[6] << 8) | tmp[5];
mem->size = ((tmp[8] << 8) | tmp[7]) << 8;
mem->flags = tmp[0];
pnp_add_mem_resource(dev,depnum,mem);
pnp_register_mem_resource(option,mem);
return;
}
......@@ -579,8 +581,8 @@ static void __init isapnp_add_mem_resource(struct pnp_dev *dev,
* Add 32-bit memory resource to resources list.
*/
static void __init isapnp_add_mem32_resource(struct pnp_dev *dev,
int depnum, int size)
static void __init isapnp_parse_mem32_resource(struct pnp_option *option,
int size)
{
unsigned char tmp[17];
struct pnp_mem *mem;
......@@ -594,15 +596,15 @@ static void __init isapnp_add_mem32_resource(struct pnp_dev *dev,
mem->align = (tmp[12] << 24) | (tmp[11] << 16) | (tmp[10] << 8) | tmp[9];
mem->size = (tmp[16] << 24) | (tmp[15] << 16) | (tmp[14] << 8) | tmp[13];
mem->flags = tmp[0];
pnp_add_mem_resource(dev,depnum,mem);
pnp_register_mem_resource(option,mem);
}
/*
* Add 32-bit fixed memory resource to resources list.
*/
static void __init isapnp_add_fixed_mem32_resource(struct pnp_dev *dev,
int depnum, int size)
static void __init isapnp_parse_fixed_mem32_resource(struct pnp_option *option,
int size)
{
unsigned char tmp[9];
struct pnp_mem *mem;
......@@ -615,14 +617,14 @@ static void __init isapnp_add_fixed_mem32_resource(struct pnp_dev *dev,
mem->size = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5];
mem->align = 0;
mem->flags = tmp[0];
pnp_add_mem_resource(dev,depnum,mem);
pnp_register_mem_resource(option,mem);
}
/*
* Parse card name for ISA PnP device.
*/
static void __init
static void __init
isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size)
{
if (name[0] == '\0') {
......@@ -634,7 +636,7 @@ isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size)
/* clean whitespace from end of string */
while (size1 > 0 && name[--size1] == ' ')
name[size1] = '\0';
}
}
}
/*
......@@ -644,14 +646,17 @@ isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size)
static int __init isapnp_create_device(struct pnp_card *card,
unsigned short size)
{
int number = 0, skip = 0, depnum = 0, dependent = 0, compat = 0;
int number = 0, skip = 0, priority = 0, compat = 0;
unsigned char type, tmp[17];
struct pnp_option *option;
struct pnp_dev *dev;
if ((dev = isapnp_parse_device(card, size, number++)) == NULL)
return 1;
if (pnp_build_resource(dev, 0) == NULL)
option = pnp_register_independent_option(dev);
if (!option)
return 1;
pnp_add_card_device(card,dev);
while (1) {
if (isapnp_read_tag(&type, &size)<0)
return 1;
......@@ -662,15 +667,16 @@ static int __init isapnp_create_device(struct pnp_card *card,
if (size >= 5 && size <= 6) {
if ((dev = isapnp_parse_device(card, size, number++)) == NULL)
return 1;
pnp_build_resource(dev,0);
pnp_add_card_device(card,dev);
size = 0;
skip = 0;
option = pnp_register_independent_option(dev);
if (!option)
return 1;
pnp_add_card_device(card,dev);
} else {
skip = 1;
}
dependent = 0;
depnum = 0;
priority = 0;
compat = 0;
break;
case _STAG_COMPATDEVID:
......@@ -684,43 +690,43 @@ static int __init isapnp_create_device(struct pnp_card *card,
case _STAG_IRQ:
if (size < 2 || size > 3)
goto __skip;
isapnp_add_irq_resource(dev, depnum, size);
isapnp_parse_irq_resource(option, size);
size = 0;
break;
case _STAG_DMA:
if (size != 2)
goto __skip;
isapnp_add_dma_resource(dev, depnum, size);
isapnp_parse_dma_resource(option, size);
size = 0;
break;
case _STAG_STARTDEP:
if (size > 1)
goto __skip;
dependent = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE;
priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE;
if (size > 0) {
isapnp_peek(tmp, size);
dependent = 0x100 | tmp[0];
priority = 0x100 | tmp[0];
size = 0;
}
pnp_build_resource(dev,dependent);
depnum = pnp_get_max_depnum(dev);
option = pnp_register_dependent_option(dev,priority);
if (!option)
return 1;
break;
case _STAG_ENDDEP:
if (size != 0)
goto __skip;
dependent = 0;
depnum = 0;
priority = 0;
break;
case _STAG_IOPORT:
if (size != 7)
goto __skip;
isapnp_add_port_resource(dev, depnum, size);
isapnp_parse_port_resource(option, size);
size = 0;
break;
case _STAG_FIXEDIO:
if (size != 3)
goto __skip;
isapnp_add_fixed_port_resource(dev, depnum, size);
isapnp_parse_fixed_port_resource(option, size);
size = 0;
break;
case _STAG_VENDOR:
......@@ -728,7 +734,7 @@ static int __init isapnp_create_device(struct pnp_card *card,
case _LTAG_MEMRANGE:
if (size != 9)
goto __skip;
isapnp_add_mem_resource(dev, depnum, size);
isapnp_parse_mem_resource(option, size);
size = 0;
break;
case _LTAG_ANSISTR:
......@@ -743,13 +749,13 @@ static int __init isapnp_create_device(struct pnp_card *card,
case _LTAG_MEM32RANGE:
if (size != 17)
goto __skip;
isapnp_add_mem32_resource(dev, depnum, size);
isapnp_parse_mem32_resource(option, size);
size = 0;
break;
case _LTAG_FIXEDMEM32RANGE:
if (size != 9)
goto __skip;
isapnp_add_fixed_mem32_resource(dev, depnum, size);
isapnp_parse_fixed_mem32_resource(option, size);
size = 0;
break;
case _STAG_END:
......@@ -859,63 +865,6 @@ static void isapnp_parse_card_id(struct pnp_card * card, unsigned short vendor,
pnp_add_card_id(id,card);
}
static int isapnp_parse_current_resources(struct pnp_dev *dev, struct pnp_resource_table * res)
{
int tmp, ret;
struct pnp_rule_table rule;
if (dev->rule)
rule = *dev->rule;
else {
if (!pnp_generate_rule(dev,1,&rule))
return -EINVAL;
}
dev->active = isapnp_read_byte(ISAPNP_CFG_ACTIVATE);
if (dev->active) {
for (tmp = 0; tmp < PNP_MAX_PORT; tmp++) {
ret = isapnp_read_word(ISAPNP_CFG_PORT + (tmp << 1));
if (!ret)
continue;
res->port_resource[tmp].start = ret;
if (rule.port[tmp])
res->port_resource[tmp].end = ret + rule.port[tmp]->size - 1;
else
res->port_resource[tmp].end = ret + 1; /* all we can do is assume 1 :-( */
res->port_resource[tmp].flags = IORESOURCE_IO;
}
for (tmp = 0; tmp < PNP_MAX_MEM; tmp++) {
ret = isapnp_read_dword(ISAPNP_CFG_MEM + (tmp << 3));
if (!ret)
continue;
res->mem_resource[tmp].start = ret;
if (rule.mem[tmp])
res->mem_resource[tmp].end = ret + rule.mem[tmp]->size - 1;
else
res->mem_resource[tmp].end = ret + 1; /* all we can do is assume 1 :-( */
res->mem_resource[tmp].flags = IORESOURCE_MEM;
}
for (tmp = 0; tmp < PNP_MAX_IRQ; tmp++) {
ret = (isapnp_read_word(ISAPNP_CFG_IRQ + (tmp << 1)) >> 8);
if (!ret)
continue;
res->irq_resource[tmp].start = res->irq_resource[tmp].end = ret;
res->irq_resource[tmp].flags = IORESOURCE_IRQ;
}
for (tmp = 0; tmp < PNP_MAX_DMA; tmp++) {
ret = isapnp_read_byte(ISAPNP_CFG_DMA + tmp);
if (ret == 4)
continue;
if (rule.dma[tmp]) { /* some isapnp systems forget to set this to 4 so we have to check */
res->dma_resource[tmp].start = res->dma_resource[tmp].end = ret;
res->dma_resource[tmp].flags = IORESOURCE_DMA;
}
}
}
return 0;
}
/*
* Build device list for all present ISA PnP devices.
*/
......@@ -925,7 +874,6 @@ static int __init isapnp_build_device_list(void)
int csn;
unsigned char header[9], checksum;
struct pnp_card *card;
struct pnp_dev *dev;
isapnp_wait();
isapnp_key();
......@@ -959,13 +907,6 @@ static int __init isapnp_build_device_list(void)
card->checksum = isapnp_checksum_value;
card->protocol = &isapnp_protocol;
/* read the current resource data */
card_for_each_dev(card,dev) {
isapnp_device(dev->number);
pnp_init_resource_table(&dev->res);
isapnp_parse_current_resources(dev, &dev->res);
}
pnp_add_card(card);
}
isapnp_wait();
......@@ -1041,12 +982,50 @@ EXPORT_SYMBOL(isapnp_write_dword);
EXPORT_SYMBOL(isapnp_wake);
EXPORT_SYMBOL(isapnp_device);
static int isapnp_read_resources(struct pnp_dev *dev, struct pnp_resource_table *res)
{
int tmp, ret;
dev->active = isapnp_read_byte(ISAPNP_CFG_ACTIVATE);
if (dev->active) {
for (tmp = 0; tmp < PNP_MAX_PORT; tmp++) {
ret = isapnp_read_word(ISAPNP_CFG_PORT + (tmp << 1));
if (!ret)
continue;
res->port_resource[tmp].start = ret;
res->port_resource[tmp].flags = IORESOURCE_IO;
}
for (tmp = 0; tmp < PNP_MAX_MEM; tmp++) {
ret = isapnp_read_dword(ISAPNP_CFG_MEM + (tmp << 3));
if (!ret)
continue;
res->mem_resource[tmp].start = ret;
res->mem_resource[tmp].flags = IORESOURCE_MEM;
}
for (tmp = 0; tmp < PNP_MAX_IRQ; tmp++) {
ret = (isapnp_read_word(ISAPNP_CFG_IRQ + (tmp << 1)) >> 8);
if (!ret)
continue;
res->irq_resource[tmp].start = res->irq_resource[tmp].end = ret;
res->irq_resource[tmp].flags = IORESOURCE_IRQ;
}
for (tmp = 0; tmp < PNP_MAX_DMA; tmp++) {
ret = isapnp_read_byte(ISAPNP_CFG_DMA + tmp);
if (ret == 4)
continue;
res->dma_resource[tmp].start = res->dma_resource[tmp].end = ret;
res->dma_resource[tmp].flags = IORESOURCE_DMA;
}
}
return 0;
}
static int isapnp_get_resources(struct pnp_dev *dev, struct pnp_resource_table * res)
{
int ret;
pnp_init_resource_table(res);
pnp_init_resources(res);
isapnp_cfg_begin(dev->card->number, dev->number);
ret = isapnp_parse_current_resources(dev, res);
ret = isapnp_read_resources(dev, res);
isapnp_cfg_end();
return ret;
}
......
drivers/pnp/manager.c
View file @ 40ca599a
/*
* manager.c - Resource Management, Conflict Resolution, Activation and Disabling of Devices
*
* based on isapnp.c resource management (c) Jaroslav Kysela <perex@suse.cz>
* Copyright 2003 Adam Belay <ambx1@neo.rr.com>
*
*/
......@@ -20,551 +21,341 @@
#include <linux/pnp.h>
#include "base.h"
DECLARE_MUTEX(pnp_res_mutex);
int pnp_max_moves = 4;
static int pnp_next_port(struct pnp_dev * dev, int idx)
static int pnp_assign_port(struct pnp_dev *dev, struct pnp_port *rule, int idx)
{
struct pnp_port *port;
unsigned long *start, *end, *flags;
if (!dev || idx < 0 || idx >= PNP_MAX_PORT)
return 0;
port = dev->rule->port[idx];
if (!port)
if (!dev || !rule)
return -EINVAL;
if (idx >= PNP_MAX_PORT) {
pnp_err("More than 4 ports is incompatible with pnp specifications.");
/* pretend we were successful so at least the manager won't try again */
return 1;
}
/* check if this resource has been manually set, if so skip */
if (!(dev->res.port_resource[idx].flags & IORESOURCE_AUTO))
return 1;
start = &dev->res.port_resource[idx].start;
end = &dev->res.port_resource[idx].end;
flags = &dev->res.port_resource[idx].flags;
/* set the initial values if this is the first time */
if (*start == 0) {
*start = port->min;
*end = *start + port->size - 1;
*flags = port->flags | IORESOURCE_IO;
if (!pnp_check_port(dev, idx))
return 1;
}
/* set the initial values */
*start = rule->min;
*end = *start + rule->size - 1;
*flags = *flags | rule->flags | IORESOURCE_IO;
/* run through until pnp_check_port is happy */
do {
*start += port->align;
*end = *start + port->size - 1;
if (*start > port->max || !port->align)
while (!pnp_check_port(dev, idx)) {
*start += rule->align;
*end = *start + rule->size - 1;
if (*start > rule->max || !rule->align)
return 0;
} while (pnp_check_port(dev, idx));
}
return 1;
}
static int pnp_next_mem(struct pnp_dev * dev, int idx)
static int pnp_assign_mem(struct pnp_dev *dev, struct pnp_mem *rule, int idx)
{
struct pnp_mem *mem;
unsigned long *start, *end, *flags;
if (!dev || idx < 0 || idx >= PNP_MAX_MEM)
return 0;
mem = dev->rule->mem[idx];
if (!mem)
if (!dev || !rule)
return -EINVAL;
if (idx >= PNP_MAX_MEM) {
pnp_err("More than 8 mems is incompatible with pnp specifications.");
/* pretend we were successful so at least the manager won't try again */
return 1;
}
/* check if this resource has been manually set, if so skip */
if (!(dev->res.mem_resource[idx].flags & IORESOURCE_AUTO))
return 1;
start = &dev->res.mem_resource[idx].start;
end = &dev->res.mem_resource[idx].end;
flags = &dev->res.mem_resource[idx].flags;
/* set the initial values if this is the first time */
if (*start == 0) {
*start = mem->min;
*end = *start + mem->size -1;
*flags = mem->flags | IORESOURCE_MEM;
if (!(mem->flags & IORESOURCE_MEM_WRITEABLE))
*flags |= IORESOURCE_READONLY;
if (mem->flags & IORESOURCE_MEM_CACHEABLE)
*flags |= IORESOURCE_CACHEABLE;
if (mem->flags & IORESOURCE_MEM_RANGELENGTH)
*flags |= IORESOURCE_RANGELENGTH;
if (mem->flags & IORESOURCE_MEM_SHADOWABLE)
*flags |= IORESOURCE_SHADOWABLE;
if (!pnp_check_mem(dev, idx))
return 1;
}
/* set the initial values */
*start = rule->min;
*end = *start + rule->size -1;
*flags = *flags | rule->flags | IORESOURCE_MEM;
/* convert pnp flags to standard Linux flags */
if (!(rule->flags & IORESOURCE_MEM_WRITEABLE))
*flags |= IORESOURCE_READONLY;
if (rule->flags & IORESOURCE_MEM_CACHEABLE)
*flags |= IORESOURCE_CACHEABLE;
if (rule->flags & IORESOURCE_MEM_RANGELENGTH)
*flags |= IORESOURCE_RANGELENGTH;
if (rule->flags & IORESOURCE_MEM_SHADOWABLE)
*flags |= IORESOURCE_SHADOWABLE;
/* run through until pnp_check_mem is happy */
do {
*start += mem->align;
*end = *start + mem->size - 1;
if (*start > mem->max || !mem->align)
while (!pnp_check_mem(dev, idx)) {
*start += rule->align;
*end = *start + rule->size - 1;
if (*start > rule->max || !rule->align)
return 0;
} while (pnp_check_mem(dev, idx));
}
return 1;
}
static int pnp_next_irq(struct pnp_dev * dev, int idx)
static int pnp_assign_irq(struct pnp_dev * dev, struct pnp_irq *rule, int idx)
{
struct pnp_irq *irq;
unsigned long *start, *end, *flags;
int i, mask;
if (!dev || idx < 0 || idx >= PNP_MAX_IRQ)
return 0;
irq = dev->rule->irq[idx];
if (!irq)
return 1;
int i;
start = &dev->res.irq_resource[idx].start;
end = &dev->res.irq_resource[idx].end;
flags = &dev->res.irq_resource[idx].flags;
/* 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
};
/* set the initial values if this is the first time */
if (*start == -1) {
*start = *end = 0;
*flags = irq->flags | IORESOURCE_IRQ;
if (!pnp_check_irq(dev, idx))
return 1;
}
if (!dev || !rule)
return -EINVAL;
mask = irq->map;
for (i = *start + 1; i < 16; i++)
{
if(mask>>i & 0x01) {
*start = *end = i;
if(!pnp_check_irq(dev, idx))
return 1;
}
if (idx >= PNP_MAX_IRQ) {
pnp_err("More than 2 irqs is incompatible with pnp specifications.");
/* pretend we were successful so at least the manager won't try again */
return 1;
}
return 0;
}
static int pnp_next_dma(struct pnp_dev * dev, int idx)
{
struct pnp_dma *dma;
unsigned long *start, *end, *flags;
int i, mask;
if (!dev || idx < 0 || idx >= PNP_MAX_DMA)
return -EINVAL;
dma = dev->rule->dma[idx];
if (!dma)
/* check if this resource has been manually set, if so skip */
if (!(dev->res.irq_resource[idx].flags & IORESOURCE_AUTO))
return 1;
start = &dev->res.dma_resource[idx].start;
end = &dev->res.dma_resource[idx].end;
flags = &dev->res.dma_resource[idx].flags;
start = &dev->res.irq_resource[idx].start;
end = &dev->res.irq_resource[idx].end;
flags = &dev->res.irq_resource[idx].flags;
/* set the initial values if this is the first time */
if (*start == -1) {
*start = *end = 0;
*flags = dma->flags | IORESOURCE_DMA;
if (!pnp_check_dma(dev, idx))
return 1;
}
/* set the initial values */
*flags = *flags | rule->flags | IORESOURCE_IRQ;
mask = dma->map;
for (i = *start + 1; i < 8; i++)
{
if(mask>>i & 0x01) {
*start = *end = i;
if(!pnp_check_dma(dev, idx))
for (i = 0; i < 16; i++) {
if(rule->map & (1<<xtab[i])) {
*start = *end = xtab[i];
if(pnp_check_irq(dev, idx))
return 1;
}
}
return 0;
}
static int pnp_next_rule(struct pnp_dev *dev)
{
int depnum = dev->rule->depnum;
int max = pnp_get_max_depnum(dev);
int priority = PNP_RES_PRIORITY_PREFERRED;
if (depnum < 0)
return 0;
if (max == 0) {
if (pnp_generate_rule(dev, 0, dev->rule)) {
dev->rule->depnum = -1;
return 1;
}
}
if(depnum > 0) {
struct pnp_resources * res = pnp_find_resources(dev, depnum);
priority = res->priority;
}
for (; priority <= PNP_RES_PRIORITY_FUNCTIONAL; priority++, depnum = 0) {
depnum += 1;
for (; depnum <= max; depnum++) {
struct pnp_resources * res = pnp_find_resources(dev, depnum);
if (res->priority == priority) {
if(pnp_generate_rule(dev, depnum, dev->rule)) {
dev->rule->depnum = depnum;
return 1;
}
}
}
}
return 0;
}
struct pnp_change {
struct list_head change_list;
struct list_head changes;
struct pnp_resource_table res_bak;
struct pnp_rule_table rule_bak;
struct pnp_dev * dev;
};
static void pnp_free_changes(struct pnp_change * parent)
{
struct list_head * pos, * temp;
list_for_each_safe(pos, temp, &parent->changes) {
struct pnp_change * change = list_entry(pos, struct pnp_change, change_list);
list_del(&change->change_list);
kfree(change);
}
}
static void pnp_undo_changes(struct pnp_change * parent)
{
struct list_head * pos, * temp;
list_for_each_safe(pos, temp, &parent->changes) {
struct pnp_change * change = list_entry(pos, struct pnp_change, change_list);
*change->dev->rule = change->rule_bak;
change->dev->res = change->res_bak;
list_del(&change->change_list);
kfree(change);
}
}
static struct pnp_change * pnp_add_change(struct pnp_change * parent, struct pnp_dev * dev)
{
struct pnp_change * change = pnp_alloc(sizeof(struct pnp_change));
if (!change)
return NULL;
change->res_bak = dev->res;
change->rule_bak = *dev->rule;
change->dev = dev;
INIT_LIST_HEAD(&change->changes);
if (parent)
list_add(&change->change_list, &parent->changes);
return change;
}
static void pnp_commit_changes(struct pnp_change * parent, struct pnp_change * change)
{
/* check if it's the root change */
if (!parent)
return;
if (!list_empty(&change->changes))
list_splice_init(&change->changes, &parent->changes);
}
static int pnp_next_config(struct pnp_dev * dev, int move, struct pnp_change * parent);
static int pnp_next_request(struct pnp_dev * dev, int move, struct pnp_change * parent, struct pnp_change * change)
static int pnp_assign_dma(struct pnp_dev *dev, struct pnp_dma *rule, int idx)
{
unsigned long *start, *end, *flags;
int i;
struct pnp_dev * cdev;
for (i = 0; i < PNP_MAX_PORT; i++) {
if (dev->res.port_resource[i].start == 0
|| pnp_check_port_conflicts(dev,i,SEARCH_WARM)) {
if (!pnp_next_port(dev,i))
return 0;
}
do {
cdev = pnp_check_port_conflicts(dev,i,SEARCH_COLD);
if (cdev && (!move || !pnp_next_config(cdev,move,change))) {
pnp_undo_changes(change);
if (!pnp_next_port(dev,i))
return 0;
}
} while (cdev);
pnp_commit_changes(parent, change);
}
for (i = 0; i < PNP_MAX_MEM; i++) {
if (dev->res.mem_resource[i].start == 0
|| pnp_check_mem_conflicts(dev,i,SEARCH_WARM)) {
if (!pnp_next_mem(dev,i))
return 0;
}
do {
cdev = pnp_check_mem_conflicts(dev,i,SEARCH_COLD);
if (cdev && (!move || !pnp_next_config(cdev,move,change))) {
pnp_undo_changes(change);
if (!pnp_next_mem(dev,i))
return 0;
}
} while (cdev);
pnp_commit_changes(parent, change);
}
for (i = 0; i < PNP_MAX_IRQ; i++) {
if (dev->res.irq_resource[i].start == -1
|| pnp_check_irq_conflicts(dev,i,SEARCH_WARM)) {
if (!pnp_next_irq(dev,i))
return 0;
}
do {
cdev = pnp_check_irq_conflicts(dev,i,SEARCH_COLD);
if (cdev && (!move || !pnp_next_config(cdev,move,change))) {
pnp_undo_changes(change);
if (!pnp_next_irq(dev,i))
return 0;
}
} while (cdev);
pnp_commit_changes(parent, change);
}
for (i = 0; i < PNP_MAX_DMA; i++) {
if (dev->res.dma_resource[i].start == -1
|| pnp_check_dma_conflicts(dev,i,SEARCH_WARM)) {
if (!pnp_next_dma(dev,i))
return 0;
}
do {
cdev = pnp_check_dma_conflicts(dev,i,SEARCH_COLD);
if (cdev && (!move || !pnp_next_config(cdev,move,change))) {
pnp_undo_changes(change);
if (!pnp_next_dma(dev,i))
return 0;
}
} while (cdev);
pnp_commit_changes(parent, change);
}
return 1;
}
static int pnp_next_config(struct pnp_dev * dev, int move, struct pnp_change * parent)
{
struct pnp_change * change;
move--;
if (!dev->rule)
return 0;
change = pnp_add_change(parent,dev);
if (!change)
return 0;
if (!pnp_can_configure(dev))
goto fail;
if (!dev->rule->depnum) {
if (!pnp_next_rule(dev))
goto fail;
}
while (!pnp_next_request(dev, move, parent, change)) {
if(!pnp_next_rule(dev))
goto fail;
pnp_init_resource_table(&dev->res);
}
if (!parent) {
pnp_free_changes(change);
kfree(change);
}
return 1;
/* DMA priority: this table is good for i386 */
static unsigned short xtab[8] = {
1, 3, 5, 6, 7, 0, 2, 4
};
fail:
if (!parent)
kfree(change);
return 0;
}
if (!dev || !rule)
return -EINVAL;
/* this advanced algorithm will shuffle other configs to make room and ensure that the most possible devices have configs */
static int pnp_advanced_config(struct pnp_dev * dev)
{
int move;
/* if the device cannot be configured skip it */
if (!pnp_can_configure(dev))
if (idx >= PNP_MAX_DMA) {
pnp_err("More than 2 dmas is incompatible with pnp specifications.");
/* pretend we were successful so at least the manager won't try again */
return 1;
if (!dev->rule) {
dev->rule = pnp_alloc(sizeof(struct pnp_rule_table));
if (!dev->rule)
return -ENOMEM;
}
spin_lock(&pnp_lock);
for (move = 1; move <= pnp_max_moves; move++) {
dev->rule->depnum = 0;
pnp_init_resource_table(&dev->res);
if (pnp_next_config(dev,move,NULL)) {
spin_unlock(&pnp_lock);
return 1;
}
}
/* check if this resource has been manually set, if so skip */
if (!(dev->res.dma_resource[idx].flags & IORESOURCE_AUTO))
return 1;
pnp_init_resource_table(&dev->res);
dev->rule->depnum = 0;
spin_unlock(&pnp_lock);
pnp_err("res: Unable to resolve resource conflicts for the device '%s', some devices may not be usable.", dev->dev.bus_id);
return 0;
}
start = &dev->res.dma_resource[idx].start;
end = &dev->res.dma_resource[idx].end;
flags = &dev->res.dma_resource[idx].flags;
int pnp_resolve_conflicts(struct pnp_dev *dev)
{
int i;
struct pnp_dev * cdev;
for (i = 0; i < PNP_MAX_PORT; i++)
{
do {
cdev = pnp_check_port_conflicts(dev,i,SEARCH_COLD);
if (cdev)
pnp_advanced_config(cdev);
} while (cdev);
}
for (i = 0; i < PNP_MAX_MEM; i++)
{
do {
cdev = pnp_check_mem_conflicts(dev,i,SEARCH_COLD);
if (cdev)
pnp_advanced_config(cdev);
} while (cdev);
}
for (i = 0; i < PNP_MAX_IRQ; i++)
{
do {
cdev = pnp_check_irq_conflicts(dev,i,SEARCH_COLD);
if (cdev)
pnp_advanced_config(cdev);
} while (cdev);
}
for (i = 0; i < PNP_MAX_DMA; i++)
{
do {
cdev = pnp_check_dma_conflicts(dev,i,SEARCH_COLD);
if (cdev)
pnp_advanced_config(cdev);
} while (cdev);
}
return 1;
}
/* set the initial values */
*flags = *flags | rule->flags | IORESOURCE_DMA;
/* this is a much faster algorithm but it may not leave resources for other devices to use */
static int pnp_simple_config(struct pnp_dev * dev)
{
int i;
spin_lock(&pnp_lock);
if (dev->active) {
spin_unlock(&pnp_lock);
return 1;
}
if (!dev->rule) {
dev->rule = pnp_alloc(sizeof(struct pnp_rule_table));
if (!dev->rule) {
spin_unlock(&pnp_lock);
return -ENOMEM;
}
}
dev->rule->depnum = 0;
pnp_init_resource_table(&dev->res);
while (pnp_next_rule(dev)) {
for (i = 0; i < PNP_MAX_PORT; i++) {
if (!pnp_next_port(dev,i))
continue;
}
for (i = 0; i < PNP_MAX_MEM; i++) {
if (!pnp_next_mem(dev,i))
continue;
}
for (i = 0; i < PNP_MAX_IRQ; i++) {
if (!pnp_next_irq(dev,i))
continue;
}
for (i = 0; i < PNP_MAX_DMA; i++) {
if (!pnp_next_dma(dev,i))
continue;
for (i = 0; i < 8; i++) {
if(rule->map & (1<<xtab[i])) {
*start = *end = xtab[i];
if(pnp_check_dma(dev, idx))
return 1;
}
goto done;
}
pnp_init_resource_table(&dev->res);
dev->rule->depnum = 0;
spin_unlock(&pnp_lock);
return 0;
done:
pnp_resolve_conflicts(dev); /* this is required or we will break the advanced configs */
return 1;
}
static int pnp_compare_resources(struct pnp_resource_table * resa, struct pnp_resource_table * resb)
/**
* pnp_init_resources - Resets a resource table to default values.
* @table: pointer to the desired resource table
*
*/
void pnp_init_resources(struct pnp_resource_table *table)
{
int idx;
down(&pnp_res_mutex);
for (idx = 0; idx < PNP_MAX_IRQ; idx++) {
if (resa->irq_resource[idx].start != resb->irq_resource[idx].start)
return 1;
table->irq_resource[idx].name = NULL;
table->irq_resource[idx].start = -1;
table->irq_resource[idx].end = -1;
table->irq_resource[idx].flags = IORESOURCE_AUTO;
}
for (idx = 0; idx < PNP_MAX_DMA; idx++) {
if (resa->dma_resource[idx].start != resb->dma_resource[idx].start)
return 1;
table->dma_resource[idx].name = NULL;
table->dma_resource[idx].start = -1;
table->dma_resource[idx].end = -1;
table->dma_resource[idx].flags = IORESOURCE_AUTO;
}
for (idx = 0; idx < PNP_MAX_PORT; idx++) {
if (resa->port_resource[idx].start != resb->port_resource[idx].start)
return 1;
if (resa->port_resource[idx].end != resb->port_resource[idx].end)
return 1;
table->port_resource[idx].name = NULL;
table->port_resource[idx].start = 0;
table->port_resource[idx].end = 0;
table->port_resource[idx].flags = IORESOURCE_AUTO;
}
for (idx = 0; idx < PNP_MAX_MEM; idx++) {
if (resa->mem_resource[idx].start != resb->mem_resource[idx].start)
return 1;
if (resa->mem_resource[idx].end != resb->mem_resource[idx].end)
return 1;
table->mem_resource[idx].name = NULL;
table->mem_resource[idx].start = 0;
table->mem_resource[idx].end = 0;
table->mem_resource[idx].flags = IORESOURCE_AUTO;
}
return 0;
up(&pnp_res_mutex);
}
/*
* PnP Device Resource Management
*/
/**
* pnp_auto_config_dev - determines the best possible resource configuration based on available information
* @dev: pointer to the desired device
* pnp_clean_resources - clears resources that were not manually set
* @res - the resources to clean
*
*/
int pnp_auto_config_dev(struct pnp_dev *dev)
{
int error;
if(!dev)
return -EINVAL;
dev->config_mode = PNP_CONFIG_AUTO;
if(dev->active)
error = pnp_resolve_conflicts(dev);
else
error = pnp_advanced_config(dev);
return error;
}
static void pnp_process_manual_resources(struct pnp_resource_table * ctab, struct pnp_resource_table * ntab)
static void pnp_clean_resources(struct pnp_resource_table * res)
{
int idx;
for (idx = 0; idx < PNP_MAX_IRQ; idx++) {
if (ntab->irq_resource[idx].flags & IORESOURCE_AUTO)
if (!(res->irq_resource[idx].flags & IORESOURCE_AUTO))
continue;
ctab->irq_resource[idx].start = ntab->irq_resource[idx].start;
ctab->irq_resource[idx].end = ntab->irq_resource[idx].end;
ctab->irq_resource[idx].flags = ntab->irq_resource[idx].flags;
res->irq_resource[idx].start = -1;
res->irq_resource[idx].end = -1;
res->irq_resource[idx].flags = IORESOURCE_AUTO;
}
for (idx = 0; idx < PNP_MAX_DMA; idx++) {
if (ntab->dma_resource[idx].flags & IORESOURCE_AUTO)
if (!(res->dma_resource[idx].flags & IORESOURCE_AUTO))
continue;
ctab->dma_resource[idx].start = ntab->dma_resource[idx].start;
ctab->dma_resource[idx].end = ntab->dma_resource[idx].end;
ctab->dma_resource[idx].flags = ntab->dma_resource[idx].flags;
res->dma_resource[idx].start = -1;
res->dma_resource[idx].end = -1;
res->dma_resource[idx].flags = IORESOURCE_AUTO;
}
for (idx = 0; idx < PNP_MAX_PORT; idx++) {
if (ntab->port_resource[idx].flags & IORESOURCE_AUTO)
if (!(res->port_resource[idx].flags & IORESOURCE_AUTO))
continue;
ctab->port_resource[idx].start = ntab->port_resource[idx].start;
ctab->port_resource[idx].end = ntab->port_resource[idx].end;
ctab->port_resource[idx].flags = ntab->port_resource[idx].flags;
res->port_resource[idx].start = 0;
res->port_resource[idx].end = 0;
res->port_resource[idx].flags = IORESOURCE_AUTO;
}
for (idx = 0; idx < PNP_MAX_MEM; idx++) {
if (ntab->irq_resource[idx].flags & IORESOURCE_AUTO)
if (!(res->mem_resource[idx].flags & IORESOURCE_AUTO))
continue;
ctab->irq_resource[idx].start = ntab->mem_resource[idx].start;
ctab->irq_resource[idx].end = ntab->mem_resource[idx].end;
ctab->irq_resource[idx].flags = ntab->mem_resource[idx].flags;
res->mem_resource[idx].start = 0;
res->mem_resource[idx].end = 0;
res->mem_resource[idx].flags = IORESOURCE_AUTO;
}
}
/**
* pnp_assign_resources - assigns resources to the device based on the specified dependent number
* @dev: pointer to the desired device
* @depnum: the dependent function number
*
* Only set depnum to 0 if the device does not have dependent options.
*/
int pnp_assign_resources(struct pnp_dev *dev, int depnum)
{
struct pnp_port *port;
struct pnp_mem *mem;
struct pnp_irq *irq;
struct pnp_dma *dma;
int nport = 0, nmem = 0, nirq = 0, ndma = 0;
if (!pnp_can_configure(dev))
return -ENODEV;
down(&pnp_res_mutex);
pnp_clean_resources(&dev->res); /* start with a fresh slate */
if (dev->independent) {
port = dev->independent->port;
mem = dev->independent->mem;
irq = dev->independent->irq;
dma = dev->independent->dma;
while (port) {
if (!pnp_assign_port(dev, port, nport))
goto fail;
nport++;
port = port->next;
}
while (mem) {
if (!pnp_assign_mem(dev, mem, nmem))
goto fail;
nmem++;
mem = mem->next;
}
while (irq) {
if (!pnp_assign_irq(dev, irq, nirq))
goto fail;
nirq++;
irq = irq->next;
}
while (dma) {
if (!pnp_assign_dma(dev, dma, ndma))
goto fail;
ndma++;
dma = dma->next;
}
}
if (depnum) {
struct pnp_option *dep;
int i;
for (i=1,dep=dev->dependent; i<depnum; i++, dep=dep->next)
if(!dep)
goto fail;
port =dep->port;
mem = dep->mem;
irq = dep->irq;
dma = dep->dma;
while (port) {
if (!pnp_assign_port(dev, port, nport))
goto fail;
nport++;
port = port->next;
}
while (mem) {
if (!pnp_assign_mem(dev, mem, nmem))
goto fail;
nmem++;
mem = mem->next;
}
while (irq) {
if (!pnp_assign_irq(dev, irq, nirq))
goto fail;
nirq++;
irq = irq->next;
}
while (dma) {
if (!pnp_assign_dma(dev, dma, ndma))
goto fail;
ndma++;
dma = dma->next;
}
} else if (dev->dependent)
goto fail;
up(&pnp_res_mutex);
return 1;
fail:
pnp_clean_resources(&dev->res);
up(&pnp_res_mutex);
return 0;
}
/**
* pnp_manual_config_dev - Disables Auto Config and Manually sets the resource table
* @dev: pointer to the desired device
......@@ -572,22 +363,21 @@ static void pnp_process_manual_resources(struct pnp_resource_table * ctab, struc
*
* This function can be used by drivers that want to manually set thier resources.
*/
int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table * res, int mode)
{
int i;
struct pnp_resource_table * bak;
if (!dev || !res)
return -EINVAL;
if (dev->active)
return -EBUSY;
if (!pnp_can_configure(dev))
return -ENODEV;
bak = pnp_alloc(sizeof(struct pnp_resource_table));
if (!bak)
return -ENOMEM;
*bak = dev->res;
spin_lock(&pnp_lock);
pnp_process_manual_resources(&dev->res, res);
down(&pnp_res_mutex);
dev->res = *res;
if (!(mode & PNP_CONFIG_FORCE)) {
for (i = 0; i < PNP_MAX_PORT; i++) {
if(pnp_check_port(dev,i))
......@@ -606,27 +396,64 @@ int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table * res,
goto fail;
}
}
dev->config_mode = PNP_CONFIG_MANUAL;
spin_unlock(&pnp_lock);
up(&pnp_res_mutex);
pnp_resolve_conflicts(dev);
pnp_auto_config_dev(dev);
kfree(bak);
return 0;
fail:
dev->res = *bak;
spin_unlock(&pnp_lock);
up(&pnp_res_mutex);
kfree(bak);
return -EINVAL;
}
/**
* pnp_activate_dev - activates a PnP device for use
* pnp_auto_config_dev - automatically assigns resources to a device
* @dev: pointer to the desired device
*
* finds the best resource configuration and then informs the correct pnp protocol
*/
int pnp_auto_config_dev(struct pnp_dev *dev)
{
struct pnp_option *dep;
int i = 1;
if(!dev)
return -EINVAL;
if(!pnp_can_configure(dev)) {
pnp_info("Device %s does not support resource configuration.", dev->dev.bus_id);
return -ENODEV;
}
if (!dev->dependent) {
if (pnp_assign_resources(dev, 0))
return 1;
else
return 0;
}
dep = dev->dependent;
do {
if (pnp_assign_resources(dev, i))
return 1;
/* if this dependent resource failed, try the next one */
dep = dep->next;
i++;
} while (dep);
pnp_err("Unable to assign resources to device %s.", dev->dev.bus_id);
return 0;
}
/**
* pnp_activate_dev - activates a PnP device for use
* @dev: pointer to the desired device
*
* does not validate or set resources so be careful.
*/
int pnp_activate_dev(struct pnp_dev *dev)
{
if (!dev)
......@@ -634,55 +461,25 @@ int pnp_activate_dev(struct pnp_dev *dev)
if (dev->active) {
return 0; /* the device is already active */
}
/* If this condition is true, advanced configuration failed, we need to get this device up and running
* so we use the simple config engine which ignores cold conflicts, this of course may lead to new failures */
if (!pnp_is_active(dev)) {
if (!pnp_simple_config(dev)) {
pnp_err("res: Unable to resolve resource conflicts for the device '%s'.", dev->dev.bus_id);
goto fail;
}
}
spin_lock(&pnp_lock); /* we lock just in case the device is being configured during this call */
dev->active = 1;
spin_unlock(&pnp_lock); /* once the device is claimed active we know it won't be configured so we can unlock */
/* ensure resources are allocated */
if (!pnp_auto_config_dev(dev))
return -EBUSY;
if (dev->config_mode & PNP_CONFIG_INVALID) {
pnp_info("res: Unable to activate the PnP device '%s' because its resource configuration is invalid.", dev->dev.bus_id);
goto fail;
}
if (dev->status != PNP_READY && dev->status != PNP_ATTACHED){
pnp_err("res: Activation failed because the PnP device '%s' is busy.", dev->dev.bus_id);
goto fail;
}
if (!pnp_can_write(dev)) {
pnp_info("res: Unable to activate the PnP device '%s' because this feature is not supported.", dev->dev.bus_id);
goto fail;
pnp_info("Device %s does not supported activation.", dev->dev.bus_id);
return -EINVAL;
}
if (dev->protocol->set(dev, &dev->res)<0) {
pnp_err("res: The protocol '%s' reports that activating the PnP device '%s' has failed.", dev->protocol->name, dev->dev.bus_id);
goto fail;
pnp_err("Failed to activate device %s.", dev->dev.bus_id);
return -EIO;
}
if (pnp_can_read(dev)) {
struct pnp_resource_table * res = pnp_alloc(sizeof(struct pnp_resource_table));
if (!res)
goto fail;
dev->protocol->get(dev, res);
if (pnp_compare_resources(&dev->res, res)) /* if this happens we may be in big trouble but it's best just to continue */
pnp_err("res: The resources requested do not match those set for the PnP device '%s'.", dev->dev.bus_id);
kfree(res);
} else
dev->active = pnp_is_active(dev);
pnp_dbg("res: the device '%s' has been activated.", dev->dev.bus_id);
if (dev->rule) {
kfree(dev->rule);
dev->rule = NULL;
}
return 0;
fail:
dev->active = 0; /* fixes incorrect active state */
return -EINVAL;
dev->active = 1;
pnp_info("Device %s activated.", dev->dev.bus_id);
return 1;
}
/**
......@@ -691,7 +488,6 @@ int pnp_activate_dev(struct pnp_dev *dev)
*
* inform the correct pnp protocol so that resources can be used by other devices
*/
int pnp_disable_dev(struct pnp_dev *dev)
{
if (!dev)
......@@ -699,21 +495,25 @@ int pnp_disable_dev(struct pnp_dev *dev)
if (!dev->active) {
return 0; /* the device is already disabled */
}
if (dev->status != PNP_READY){
pnp_info("res: Disable failed becuase the PnP device '%s' is busy.", dev->dev.bus_id);
return -EINVAL;
}
if (!pnp_can_disable(dev)) {
pnp_info("res: Unable to disable the PnP device '%s' because this feature is not supported.", dev->dev.bus_id);
pnp_info("Device %s does not supported disabling.", dev->dev.bus_id);
return -EINVAL;
}
if (dev->protocol->disable(dev)<0) {
pnp_err("res: The protocol '%s' reports that disabling the PnP device '%s' has failed.", dev->protocol->name, dev->dev.bus_id);
return -1;
pnp_err("Failed to disable device %s.", dev->dev.bus_id);
return -EIO;
}
dev->active = 0; /* just in case the protocol doesn't do this */
pnp_dbg("res: the device '%s' has been disabled.", dev->dev.bus_id);
return 0;
dev->active = 0;
pnp_info("Device %s disabled.", dev->dev.bus_id);
/* release the resources so that other devices can use them */
down(&pnp_res_mutex);
pnp_clean_resources(&dev->res);
up(&pnp_res_mutex);
return 1;
}
/**
......@@ -723,7 +523,6 @@ int pnp_disable_dev(struct pnp_dev *dev)
* @size: size of region
*
*/
void pnp_resource_change(struct resource *resource, unsigned long start, unsigned long size)
{
if (resource == NULL)
......@@ -734,19 +533,10 @@ void pnp_resource_change(struct resource *resource, unsigned long start, unsigne
}
EXPORT_SYMBOL(pnp_auto_config_dev);
EXPORT_SYMBOL(pnp_assign_resources);
EXPORT_SYMBOL(pnp_manual_config_dev);
EXPORT_SYMBOL(pnp_auto_config_dev);
EXPORT_SYMBOL(pnp_activate_dev);
EXPORT_SYMBOL(pnp_disable_dev);
EXPORT_SYMBOL(pnp_resource_change);
/* format is: pnp_max_moves=num */
static int __init pnp_setup_max_moves(char *str)
{
get_option(&str,&pnp_max_moves);
return 1;
}
__setup("pnp_max_moves=", pnp_setup_max_moves);
EXPORT_SYMBOL(pnp_init_resources);
drivers/pnp/quirks.c
View file @ 40ca599a
......@@ -30,7 +30,7 @@
static void quirk_awe32_resources(struct pnp_dev *dev)
{
struct pnp_port *port, *port2, *port3;
struct pnp_resources *res = dev->possible->dep;
struct pnp_option *res = dev->dependent;
/*
* Unfortunately the isapnp_add_port_resource is too tightly bound
......@@ -38,7 +38,7 @@ static void quirk_awe32_resources(struct pnp_dev *dev)
* two extra ports (at offset 0x400 and 0x800 from the one given) by
* hand.
*/
for ( ; res ; res = res->dep ) {
for ( ; res ; res = res->next ) {
port2 = pnp_alloc(sizeof(struct pnp_port));
if (!port2)
return;
......@@ -62,9 +62,9 @@ static void quirk_awe32_resources(struct pnp_dev *dev)
static void quirk_cmi8330_resources(struct pnp_dev *dev)
{
struct pnp_resources *res = dev->possible->dep;
struct pnp_option *res = dev->dependent;
for ( ; res ; res = res->dep ) {
for ( ; res ; res = res->next ) {
struct pnp_irq *irq;
struct pnp_dma *dma;
......@@ -82,7 +82,7 @@ static void quirk_cmi8330_resources(struct pnp_dev *dev)
static void quirk_sb16audio_resources(struct pnp_dev *dev)
{
struct pnp_port *port;
struct pnp_resources *res = dev->possible->dep;
struct pnp_option *res = dev->dependent;
int changed = 0;
/*
......@@ -91,7 +91,7 @@ static void quirk_sb16audio_resources(struct pnp_dev *dev)
* auto-configured.
*/
for( ; res ; res = res->dep ) {
for( ; res ; res = res->next ) {
port = res->port;
if(!port)
continue;
......@@ -118,11 +118,11 @@ static void quirk_opl3sax_resources(struct pnp_dev *dev)
* doesn't allow a DMA channel of 0, afflicted card is an
* OPL3Sax where x=4.
*/
struct pnp_resources *res;
struct pnp_option *res;
int max;
res = dev->possible;
res = dev->dependent;
max = 0;
for (res = res->dep; res; res = res->dep) {
for (; res; res = res->next) {
if (res->dma->map > max)
max = res->dma->map;
}
......
drivers/pnp/resource.c
View file @ 40ca599a
......@@ -10,18 +10,19 @@
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <asm/irq.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/pnp.h>
#include "base.h"
int pnp_allow_dma0 = -1; /* allow dma 0 during auto activation: -1=off (:default), 0=off (set by user), 1=on */
int pnp_allow_dma0 = -1; /* allow dma 0 during auto activation:
* -1=off (:default), 0=off (set by user), 1=on */
int pnp_skip_pci_scan; /* skip PCI resource scanning */
int pnp_reserve_irq[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some IRQ */
int pnp_reserve_dma[8] = { [0 ... 7] = -1 }; /* reserve (don't use) some DMA */
......@@ -30,88 +31,75 @@ int pnp_reserve_mem[16] = { [0 ... 15] = -1 }; /* reserve (don't use) some memor
/*
* possible resource registration
* option registration
*/
struct pnp_resources * pnp_build_resource(struct pnp_dev *dev, int dependent)
static struct pnp_option * pnp_build_option(int priority)
{
struct pnp_resources *res, *ptr, *ptra;
struct pnp_option *option = pnp_alloc(sizeof(struct pnp_option));
res = pnp_alloc(sizeof(struct pnp_resources));
if (!res)
/* check if pnp_alloc ran out of memory */
if (!option)
return NULL;
ptr = dev->possible;
if (ptr) { /* add to another list */
ptra = ptr->dep;
while (ptra && ptra->dep)
ptra = ptra->dep;
if (!ptra)
ptr->dep = res;
else
ptra->dep = res;
} else
dev->possible = res;
if (dependent) {
res->priority = dependent & 0xff;
if (res->priority > PNP_RES_PRIORITY_FUNCTIONAL)
res->priority = PNP_RES_PRIORITY_INVALID;
} else
res->priority = PNP_RES_PRIORITY_PREFERRED;
return res;
option->priority = priority & 0xff;
/* make sure the priority is valid */
if (option->priority > PNP_RES_PRIORITY_FUNCTIONAL)
option->priority = PNP_RES_PRIORITY_INVALID;
return option;
}
struct pnp_resources * pnp_find_resources(struct pnp_dev *dev, int depnum)
struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev)
{
int i;
struct pnp_resources *res;
struct pnp_option *option;
if (!dev)
return NULL;
res = dev->possible;
if (!res)
return NULL;
for (i = 0; i < depnum; i++)
{
if (res->dep)
res = res->dep;
else
return NULL;
}
return res;
option = pnp_build_option(PNP_RES_PRIORITY_PREFERRED);
/* this should never happen but if it does we'll try to continue */
if (dev->independent)
pnp_err("independent resource already registered");
dev->independent = option;
return option;
}
int pnp_get_max_depnum(struct pnp_dev *dev)
struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority)
{
int num = 0;
struct pnp_resources *res;
struct pnp_option *option;
if (!dev)
return -EINVAL;
res = dev->possible;
if (!res)
return -EINVAL;
while (res->dep){
res = res->dep;
num++;
}
return num;
return NULL;
option = pnp_build_option(priority);
if (dev->dependent) {
struct pnp_option *parent = dev->dependent;
while (parent->next)
parent = parent->next;
parent->next = option;
} else
dev->dependent = option;
return option;
}
int pnp_add_irq_resource(struct pnp_dev *dev, int depnum, struct pnp_irq *data)
int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data)
{
int i;
struct pnp_resources *res;
struct pnp_irq *ptr;
res = pnp_find_resources(dev,depnum);
if (!res)
if (!option)
return -EINVAL;
if (!data)
return -EINVAL;
ptr = res->irq;
ptr = option->irq;
while (ptr && ptr->next)
ptr = ptr->next;
if (ptr)
ptr->next = data;
else
res->irq = data;
option->irq = data;
#ifdef CONFIG_PCI
for (i=0; i<16; i++)
if (data->map & (1<<i))
......@@ -120,60 +108,59 @@ int pnp_add_irq_resource(struct pnp_dev *dev, int depnum, struct pnp_irq *data)
return 0;
}
int pnp_add_dma_resource(struct pnp_dev *dev, int depnum, struct pnp_dma *data)
int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data)
{
struct pnp_resources *res;
struct pnp_dma *ptr;
res = pnp_find_resources(dev,depnum);
if (!res)
if (!option)
return -EINVAL;
if (!data)
return -EINVAL;
ptr = res->dma;
ptr = option->dma;
while (ptr && ptr->next)
ptr = ptr->next;
if (ptr)
ptr->next = data;
else
res->dma = data;
option->dma = data;
return 0;
}
int pnp_add_port_resource(struct pnp_dev *dev, int depnum, struct pnp_port *data)
int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data)
{
struct pnp_resources *res;
struct pnp_port *ptr;
res = pnp_find_resources(dev,depnum);
if (!res)
if (!option)
return -EINVAL;
if (!data)
return -EINVAL;
ptr = res->port;
ptr = option->port;
while (ptr && ptr->next)
ptr = ptr->next;
if (ptr)
ptr->next = data;
else
res->port = data;
option->port = data;
return 0;
}
int pnp_add_mem_resource(struct pnp_dev *dev, int depnum, struct pnp_mem *data)
int pnp_register_mem_resource(struct pnp_option *option, struct pnp_mem *data)
{
struct pnp_resources *res;
struct pnp_mem *ptr;
res = pnp_find_resources(dev,depnum);
if (!res)
if (!option)
return -EINVAL;
if (!data)
return -EINVAL;
ptr = res->mem;
ptr = option->mem;
while (ptr && ptr->next)
ptr = ptr->next;
if (ptr)
ptr->next = data;
else
res->mem = data;
option->mem = data;
return 0;
}
......@@ -221,18 +208,18 @@ static void pnp_free_mem(struct pnp_mem *mem)
}
}
void pnp_free_resources(struct pnp_resources *resources)
void pnp_free_option(struct pnp_option *option)
{
struct pnp_resources *next;
while (resources) {
next = resources->dep;
pnp_free_port(resources->port);
pnp_free_irq(resources->irq);
pnp_free_dma(resources->dma);
pnp_free_mem(resources->mem);
kfree(resources);
resources = next;
struct pnp_option *next;
while (option) {
next = option->next;
pnp_free_port(option->port);
pnp_free_irq(option->irq);
pnp_free_dma(option->dma);
pnp_free_mem(option->mem);
kfree(option);
option = next;
}
}
......@@ -253,50 +240,23 @@ void pnp_free_resources(struct pnp_resources *resources)
(*(enda) >= *(startb) && *(enda) <= *(endb)) || \
(*(starta) < *(startb) && *(enda) > *(endb)))
struct pnp_dev * pnp_check_port_conflicts(struct pnp_dev * dev, int idx, int mode)
{
int tmp;
unsigned long *port, *end, *tport, *tend;
struct pnp_dev *tdev;
port = &dev->res.port_resource[idx].start;
end = &dev->res.port_resource[idx].end;
/* if the resource doesn't exist, don't complain about it */
if (dev->res.port_resource[idx].start == 0)
return NULL;
/* check for cold conflicts */
pnp_for_each_dev(tdev) {
/* Is the device configurable? */
if (tdev == dev || (mode ? !tdev->active : tdev->active))
continue;
for (tmp = 0; tmp < PNP_MAX_PORT; tmp++) {
if (tdev->res.port_resource[tmp].flags & IORESOURCE_IO) {
tport = &tdev->res.port_resource[tmp].start;
tend = &tdev->res.port_resource[tmp].end;
if (ranged_conflict(port,end,tport,tend))
return tdev;
}
}
}
return NULL;
}
int pnp_check_port(struct pnp_dev * dev, int idx)
{
int tmp;
struct pnp_dev *tdev;
unsigned long *port, *end, *tport, *tend;
port = &dev->res.port_resource[idx].start;
end = &dev->res.port_resource[idx].end;
/* if the resource doesn't exist, don't complain about it */
if (dev->res.port_resource[idx].start == 0)
return 0;
return 1;
/* check if the resource is already in use, skip if the device is active because it itself may be in use */
/* check if the resource is already in use, skip if the
* device is active because it itself may be in use */
if(!dev->active) {
if (check_region(*port, length(port,end)))
return CONFLICT_TYPE_IN_USE;
return 0;
}
/* check if the resource is reserved */
......@@ -304,7 +264,7 @@ int pnp_check_port(struct pnp_dev * dev, int idx)
int rport = pnp_reserve_io[tmp << 1];
int rend = pnp_reserve_io[(tmp << 1) + 1] + rport - 1;
if (ranged_conflict(port,end,&rport,&rend))
return CONFLICT_TYPE_RESERVED;
return 0;
}
/* check for internal conflicts */
......@@ -313,61 +273,44 @@ int pnp_check_port(struct pnp_dev * dev, int idx)
tport = &dev->res.port_resource[tmp].start;
tend = &dev->res.port_resource[tmp].end;
if (ranged_conflict(port,end,tport,tend))
return CONFLICT_TYPE_INTERNAL;
return 0;
}
}
/* check for warm conflicts */
if (pnp_check_port_conflicts(dev, idx, SEARCH_WARM))
return CONFLICT_TYPE_PNP_WARM;
return 0;
}
struct pnp_dev * pnp_check_mem_conflicts(struct pnp_dev * dev, int idx, int mode)
{
int tmp;
unsigned long *addr, *end, *taddr, *tend;
struct pnp_dev *tdev;
addr = &dev->res.mem_resource[idx].start;
end = &dev->res.mem_resource[idx].end;
/* if the resource doesn't exist, don't complain about it */
if (dev->res.mem_resource[idx].start == 0)
return NULL;
/* check for cold conflicts */
/* check for conflicts with other pnp devices */
pnp_for_each_dev(tdev) {
/* Is the device configurable? */
if (tdev == dev || (mode ? !tdev->active : tdev->active))
if (tdev == dev)
continue;
for (tmp = 0; tmp < PNP_MAX_MEM; tmp++) {
if (tdev->res.mem_resource[tmp].flags & IORESOURCE_MEM) {
taddr = &tdev->res.mem_resource[tmp].start;
tend = &tdev->res.mem_resource[tmp].end;
if (ranged_conflict(addr,end,taddr,tend))
return tdev;
for (tmp = 0; tmp < PNP_MAX_PORT; tmp++) {
if (tdev->res.port_resource[tmp].flags & IORESOURCE_IO) {
tport = &tdev->res.port_resource[tmp].start;
tend = &tdev->res.port_resource[tmp].end;
if (ranged_conflict(port,end,tport,tend))
return 0;
}
}
}
return NULL;
return 1;
}
int pnp_check_mem(struct pnp_dev * dev, int idx)
{
int tmp;
struct pnp_dev *tdev;
unsigned long *addr, *end, *taddr, *tend;
addr = &dev->res.mem_resource[idx].start;
end = &dev->res.mem_resource[idx].end;
/* if the resource doesn't exist, don't complain about it */
if (dev->res.mem_resource[idx].start == 0)
return 0;
return 1;
/* check if the resource is already in use, skip if the device is active because it itself may be in use */
/* check if the resource is already in use, skip if the
* device is active because it itself may be in use */
if(!dev->active) {
if (__check_region(&iomem_resource, *addr, length(addr,end)))
return CONFLICT_TYPE_IN_USE;
return 0;
}
/* check if the resource is reserved */
......@@ -375,7 +318,7 @@ int pnp_check_mem(struct pnp_dev * dev, int idx)
int raddr = pnp_reserve_mem[tmp << 1];
int rend = pnp_reserve_mem[(tmp << 1) + 1] + raddr - 1;
if (ranged_conflict(addr,end,&raddr,&rend))
return CONFLICT_TYPE_RESERVED;
return 0;
}
/* check for internal conflicts */
......@@ -384,40 +327,25 @@ int pnp_check_mem(struct pnp_dev * dev, int idx)
taddr = &dev->res.mem_resource[tmp].start;
tend = &dev->res.mem_resource[tmp].end;
if (ranged_conflict(addr,end,taddr,tend))
return CONFLICT_TYPE_INTERNAL;
return 0;
}
}
/* check for warm conflicts */
if (pnp_check_mem_conflicts(dev, idx, SEARCH_WARM))
return CONFLICT_TYPE_PNP_WARM;
return 0;
}
struct pnp_dev * pnp_check_irq_conflicts(struct pnp_dev * dev, int idx, int mode)
{
int tmp;
struct pnp_dev * tdev;
unsigned long * irq = &dev->res.irq_resource[idx].start;
/* if the resource doesn't exist, don't complain about it */
if (dev->res.irq_resource[idx].start == -1)
return NULL;
/* check for cold conflicts */
/* check for conflicts with other pnp devices */
pnp_for_each_dev(tdev) {
/* Is the device configurable? */
if (tdev == dev || (mode ? !tdev->active : tdev->active))
if (tdev == dev)
continue;
for (tmp = 0; tmp < PNP_MAX_IRQ; tmp++) {
if (tdev->res.irq_resource[tmp].flags & IORESOURCE_IRQ) {
if ((tdev->res.irq_resource[tmp].start == *irq))
return tdev;
for (tmp = 0; tmp < PNP_MAX_MEM; tmp++) {
if (tdev->res.mem_resource[tmp].flags & IORESOURCE_MEM) {
taddr = &tdev->res.mem_resource[tmp].start;
tend = &tdev->res.mem_resource[tmp].end;
if (ranged_conflict(addr,end,taddr,tend))
return 0;
}
}
}
return NULL;
return 1;
}
static irqreturn_t pnp_test_handler(int irq, void *dev_id, struct pt_regs *regs)
......@@ -428,27 +356,28 @@ static irqreturn_t pnp_test_handler(int irq, void *dev_id, struct pt_regs *regs)
int pnp_check_irq(struct pnp_dev * dev, int idx)
{
int tmp;
struct pnp_dev *tdev;
unsigned long * irq = &dev->res.irq_resource[idx].start;
/* if the resource doesn't exist, don't complain about it */
if (dev->res.irq_resource[idx].start == -1)
return 0;
return 1;
/* check if the resource is valid */
if (*irq < 0 || *irq > 15)
return CONFLICT_TYPE_INVALID;
return 0;
/* check if the resource is reserved */
for (tmp = 0; tmp < 16; tmp++) {
if (pnp_reserve_irq[tmp] == *irq)
return CONFLICT_TYPE_RESERVED;
return 0;
}
/* check for internal conflicts */
for (tmp = 0; tmp < PNP_MAX_IRQ && tmp != idx; tmp++) {
if (dev->res.irq_resource[tmp].flags & IORESOURCE_IRQ) {
if (dev->res.irq_resource[tmp].start == *irq)
return CONFLICT_TYPE_INTERNAL;
return 0;
}
}
......@@ -458,233 +387,94 @@ int pnp_check_irq(struct pnp_dev * dev, int idx)
struct pci_dev * pci = NULL;
while ((pci = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pci)) != NULL) {
if (pci->irq == *irq)
return CONFLICT_TYPE_PCI;
return 0;
}
}
#endif
/* check if the resource is already in use, skip if the device is active because it itself may be in use */
/* check if the resource is already in use, skip if the
* device is active because it itself may be in use */
if(!dev->active) {
if (request_irq(*irq, pnp_test_handler, SA_INTERRUPT, "pnp", NULL))
return CONFLICT_TYPE_IN_USE;
return 0;
free_irq(*irq, NULL);
}
/* check for warm conflicts */
if (pnp_check_irq_conflicts(dev, idx, SEARCH_WARM))
return CONFLICT_TYPE_PNP_WARM;
return 0;
}
struct pnp_dev * pnp_check_dma_conflicts(struct pnp_dev * dev, int idx, int mode)
{
int tmp;
struct pnp_dev * tdev;
unsigned long * dma = &dev->res.dma_resource[idx].start;
/* if the resource doesn't exist, don't complain about it */
if (dev->res.dma_resource[idx].start == -1)
return NULL;
/* check for cold conflicts */
/* check for conflicts with other pnp devices */
pnp_for_each_dev(tdev) {
/* Is the device configurable? */
if (tdev == dev || (mode ? !tdev->active : tdev->active))
if (tdev == dev)
continue;
for (tmp = 0; tmp < PNP_MAX_DMA; tmp++) {
if (tdev->res.dma_resource[tmp].flags & IORESOURCE_DMA) {
if ((tdev->res.dma_resource[tmp].start == *dma))
return tdev;
for (tmp = 0; tmp < PNP_MAX_IRQ; tmp++) {
if (tdev->res.irq_resource[tmp].flags & IORESOURCE_IRQ) {
if ((tdev->res.irq_resource[tmp].start == *irq))
return 0;
}
}
}
return NULL;
return 1;
}
int pnp_check_dma(struct pnp_dev * dev, int idx)
{
int tmp, mindma = 1;
struct pnp_dev *tdev;
unsigned long * dma = &dev->res.dma_resource[idx].start;
/* if the resource doesn't exist, don't complain about it */
if (dev->res.dma_resource[idx].start == -1)
return 0;
return 1;
/* check if the resource is valid */
if (pnp_allow_dma0 == 1)
mindma = 0;
if (*dma < mindma || *dma == 4 || *dma > 7)
return CONFLICT_TYPE_INVALID;
return 0;
/* check if the resource is reserved */
for (tmp = 0; tmp < 8; tmp++) {
if (pnp_reserve_dma[tmp] == *dma)
return CONFLICT_TYPE_RESERVED;
return 0;
}
/* check for internal conflicts */
for (tmp = 0; tmp < PNP_MAX_DMA && tmp != idx; tmp++) {
if (dev->res.dma_resource[tmp].flags & IORESOURCE_DMA) {
if (dev->res.dma_resource[tmp].start == *dma)
return CONFLICT_TYPE_INTERNAL;
return 0;
}
}
/* check if the resource is already in use, skip if the device is active because it itself may be in use */
/* check if the resource is already in use, skip if the
* device is active because it itself may be in use */
if(!dev->active) {
if (request_dma(*dma, "pnp"))
return CONFLICT_TYPE_IN_USE;
return 0;
free_dma(*dma);
}
/* check for warm conflicts */
if (pnp_check_dma_conflicts(dev, idx, SEARCH_WARM))
return CONFLICT_TYPE_PNP_WARM;
return 0;
}
/**
* pnp_init_resource_table - Resets a resource table to default values.
* @table: pointer to the desired resource table
*
*/
void pnp_init_resource_table(struct pnp_resource_table *table)
{
int idx;
for (idx = 0; idx < PNP_MAX_IRQ; idx++) {
table->irq_resource[idx].name = NULL;
table->irq_resource[idx].start = -1;
table->irq_resource[idx].end = -1;
table->irq_resource[idx].flags = IORESOURCE_AUTO;
}
for (idx = 0; idx < PNP_MAX_DMA; idx++) {
table->dma_resource[idx].name = NULL;
table->dma_resource[idx].start = -1;
table->dma_resource[idx].end = -1;
table->dma_resource[idx].flags = IORESOURCE_AUTO;
}
for (idx = 0; idx < PNP_MAX_PORT; idx++) {
table->port_resource[idx].name = NULL;
table->port_resource[idx].start = 0;
table->port_resource[idx].end = 0;
table->port_resource[idx].flags = IORESOURCE_AUTO;
}
for (idx = 0; idx < PNP_MAX_MEM; idx++) {
table->mem_resource[idx].name = NULL;
table->mem_resource[idx].start = 0;
table->mem_resource[idx].end = 0;
table->mem_resource[idx].flags = IORESOURCE_AUTO;
}
}
/**
* pnp_generate_rule - Creates a rule table structure based on depnum and device.
* @dev: pointer to the desired device
* @depnum: dependent function, if not valid will return an error
* @rule: pointer to a rule structure to record data to
*
*/
int pnp_generate_rule(struct pnp_dev * dev, int depnum, struct pnp_rule_table * rule)
{
int nport = 0, nirq = 0, ndma = 0, nmem = 0;
struct pnp_resources * res;
struct pnp_port * port;
struct pnp_mem * mem;
struct pnp_irq * irq;
struct pnp_dma * dma;
if (depnum < 0 || !rule)
return -EINVAL;
/* independent */
res = pnp_find_resources(dev, 0);
if (!res)
return -ENODEV;
port = res->port;
mem = res->mem;
irq = res->irq;
dma = res->dma;
while (port){
rule->port[nport] = port;
nport++;
port = port->next;
}
while (mem){
rule->mem[nmem] = mem;
nmem++;
mem = mem->next;
}
while (irq){
rule->irq[nirq] = irq;
nirq++;
irq = irq->next;
}
while (dma){
rule->dma[ndma] = dma;
ndma++;
dma = dma->next;
}
/* dependent */
if (depnum == 0)
return 1;
res = pnp_find_resources(dev, depnum);
if (!res)
return -ENODEV;
port = res->port;
mem = res->mem;
irq = res->irq;
dma = res->dma;
while (port){
rule->port[nport] = port;
nport++;
port = port->next;
}
while (mem){
rule->mem[nmem] = mem;
nmem++;
mem = mem->next;
}
while (irq){
rule->irq[nirq] = irq;
nirq++;
irq = irq->next;
}
while (dma){
rule->dma[ndma] = dma;
ndma++;
dma = dma->next;
/* check for conflicts with other pnp devices */
pnp_for_each_dev(tdev) {
if (tdev == dev)
continue;
for (tmp = 0; tmp < PNP_MAX_DMA; tmp++) {
if (tdev->res.dma_resource[tmp].flags & IORESOURCE_DMA) {
if ((tdev->res.dma_resource[tmp].start == *dma))
return 0;
}
}
}
/* clear the remaining values */
for (; nport < PNP_MAX_PORT; nport++)
rule->port[nport] = NULL;
for (; nmem < PNP_MAX_MEM; nmem++)
rule->mem[nmem] = NULL;
for (; nirq < PNP_MAX_IRQ; nirq++)
rule->irq[nirq] = NULL;
for (; ndma < PNP_MAX_DMA; ndma++)
rule->dma[ndma] = NULL;
return 1;
}
EXPORT_SYMBOL(pnp_build_resource);
EXPORT_SYMBOL(pnp_find_resources);
EXPORT_SYMBOL(pnp_get_max_depnum);
EXPORT_SYMBOL(pnp_add_irq_resource);
EXPORT_SYMBOL(pnp_add_dma_resource);
EXPORT_SYMBOL(pnp_add_port_resource);
EXPORT_SYMBOL(pnp_add_mem_resource);
EXPORT_SYMBOL(pnp_init_resource_table);
EXPORT_SYMBOL(pnp_generate_rule);
EXPORT_SYMBOL(pnp_register_dependent_resource);
EXPORT_SYMBOL(pnp_register_independent_resource);
EXPORT_SYMBOL(pnp_register_irq_resource);
EXPORT_SYMBOL(pnp_register_dma_resource);
EXPORT_SYMBOL(pnp_register_port_resource);
EXPORT_SYMBOL(pnp_register_mem_resource);
/* format is: allowdma0 */
......
drivers/pnp/support.c
View file @ 40ca599a
/*
* support.c - provides standard pnp functions for the use of pnp protocol drivers,
*
* Copyright 2002 Adam Belay <ambx1@neo.rr.com>
* Copyright 2003 Adam Belay <ambx1@neo.rr.com>
*
* Resource parsing functions are based on those in the linux pnpbios driver.
* Copyright Christian Schmidt, Tom Lees, David Hinds, Alan Cox, Thomas Hood,
......@@ -10,6 +10,7 @@
#include <linux/config.h>
#include <linux/module.h>
#include <linux/ctype.h>
#ifdef CONFIG_PNP_DEBUG
#define DEBUG
......@@ -122,7 +123,7 @@ unsigned char * pnp_parse_current_resources(unsigned char * p, unsigned char * e
return NULL;
/* Blank the resource table values */
pnp_init_resource_table(res);
pnp_init_resources(res);
while ((char *)p < (char *)end) {
......@@ -250,7 +251,7 @@ unsigned char * pnp_parse_current_resources(unsigned char * p, unsigned char * e
* Possible resource reading functions *
*/
static void possible_mem(unsigned char *p, int size, int depnum, struct pnp_dev *dev)
static void possible_mem(unsigned char *p, int size, struct pnp_option *option)
{
struct pnp_mem * mem;
mem = pnp_alloc(sizeof(struct pnp_mem));
......@@ -261,11 +262,11 @@ static void possible_mem(unsigned char *p, int size, int depnum, struct pnp_dev
mem->align = (p[7] << 8) | p[6];
mem->size = ((p[9] << 8) | p[8]) << 8;
mem->flags = p[1];
pnp_add_mem_resource(dev,depnum,mem);
pnp_register_mem_resource(option,mem);
return;
}
static void possible_mem32(unsigned char *p, int size, int depnum, struct pnp_dev *dev)
static void possible_mem32(unsigned char *p, int size, struct pnp_option *option)
{
struct pnp_mem * mem;
mem = pnp_alloc(sizeof(struct pnp_mem));
......@@ -276,11 +277,11 @@ static void possible_mem32(unsigned char *p, int size, int depnum, struct pnp_de
mem->align = (p[13] << 24) | (p[12] << 16) | (p[11] << 8) | p[10];
mem->size = (p[17] << 24) | (p[16] << 16) | (p[15] << 8) | p[14];
mem->flags = p[1];
pnp_add_mem_resource(dev,depnum,mem);
pnp_register_mem_resource(option,mem);
return;
}
static void possible_fixed_mem32(unsigned char *p, int size, int depnum, struct pnp_dev *dev)
static void possible_fixed_mem32(unsigned char *p, int size, struct pnp_option *option)
{
struct pnp_mem * mem;
mem = pnp_alloc(sizeof(struct pnp_mem));
......@@ -290,11 +291,11 @@ static void possible_fixed_mem32(unsigned char *p, int size, int depnum, struct
mem->size = (p[9] << 24) | (p[8] << 16) | (p[7] << 8) | p[6];
mem->align = 0;
mem->flags = p[1];
pnp_add_mem_resource(dev,depnum,mem);
pnp_register_mem_resource(option,mem);
return;
}
static void possible_irq(unsigned char *p, int size, int depnum, struct pnp_dev *dev)
static void possible_irq(unsigned char *p, int size, struct pnp_option *option)
{
struct pnp_irq * irq;
irq = pnp_alloc(sizeof(struct pnp_irq));
......@@ -303,11 +304,13 @@ static void possible_irq(unsigned char *p, int size, int depnum, struct pnp_dev
irq->map = (p[2] << 8) | p[1];
if (size > 2)
irq->flags = p[3];
pnp_add_irq_resource(dev,depnum,irq);
else
irq->flags = IORESOURCE_IRQ_HIGHEDGE;
pnp_register_irq_resource(option,irq);
return;
}
static void possible_dma(unsigned char *p, int size, int depnum, struct pnp_dev *dev)
static void possible_dma(unsigned char *p, int size, struct pnp_option *option)
{
struct pnp_dma * dma;
dma = pnp_alloc(sizeof(struct pnp_dma));
......@@ -315,11 +318,11 @@ static void possible_dma(unsigned char *p, int size, int depnum, struct pnp_dev
return;
dma->map = p[1];
dma->flags = p[2];
pnp_add_dma_resource(dev,depnum,dma);
pnp_register_dma_resource(option,dma);
return;
}
static void possible_port(unsigned char *p, int size, int depnum, struct pnp_dev *dev)
static void possible_port(unsigned char *p, int size, struct pnp_option *option)
{
struct pnp_port * port;
port = pnp_alloc(sizeof(struct pnp_port));
......@@ -330,11 +333,11 @@ static void possible_port(unsigned char *p, int size, int depnum, struct pnp_dev
port->align = p[6];
port->size = p[7];
port->flags = p[1] ? PNP_PORT_FLAG_16BITADDR : 0;
pnp_add_port_resource(dev,depnum,port);
pnp_register_port_resource(option,port);
return;
}
static void possible_fixed_port(unsigned char *p, int size, int depnum, struct pnp_dev *dev)
static void possible_fixed_port(unsigned char *p, int size, struct pnp_option *option)
{
struct pnp_port * port;
port = pnp_alloc(sizeof(struct pnp_port));
......@@ -344,7 +347,7 @@ static void possible_fixed_port(unsigned char *p, int size, int depnum, struct p
port->size = p[3];
port->align = 0;
port->flags = PNP_PORT_FLAG_FIXED;
pnp_add_port_resource(dev,depnum,port);
pnp_register_port_resource(option,port);
return;
}
......@@ -358,12 +361,14 @@ static void possible_fixed_port(unsigned char *p, int size, int depnum, struct p
unsigned char * pnp_parse_possible_resources(unsigned char * p, unsigned char * end, struct pnp_dev *dev)
{
int len, depnum = 0, dependent = 0;
int len, priority = 0;
struct pnp_option *option;
if (!p)
return NULL;
if (pnp_build_resource(dev, 0) == NULL)
option = pnp_register_independent_option(dev);
if (!option)
return NULL;
while ((char *)p < (char *)end) {
......@@ -375,21 +380,21 @@ unsigned char * pnp_parse_possible_resources(unsigned char * p, unsigned char *
{
if (len != 9)
goto lrg_err;
possible_mem(p,len,depnum,dev);
possible_mem(p,len,option);
break;
}
case LARGE_TAG_MEM32:
{
if (len != 17)
goto lrg_err;
possible_mem32(p,len,depnum,dev);
possible_mem32(p,len,option);
break;
}
case LARGE_TAG_FIXEDMEM32:
{
if (len != 9)
goto lrg_err;
possible_fixed_mem32(p,len,depnum,dev);
possible_fixed_mem32(p,len,option);
break;
}
default: /* an unkown tag */
......@@ -410,46 +415,46 @@ unsigned char * pnp_parse_possible_resources(unsigned char * p, unsigned char *
{
if (len < 2 || len > 3)
goto sm_err;
possible_irq(p,len,depnum,dev);
possible_irq(p,len,option);
break;
}
case SMALL_TAG_DMA:
{
if (len != 2)
goto sm_err;
possible_dma(p,len,depnum,dev);
possible_dma(p,len,option);
break;
}
case SMALL_TAG_STARTDEP:
{
if (len > 1)
goto sm_err;
dependent = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE;
priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE;
if (len > 0)
dependent = 0x100 | p[1];
pnp_build_resource(dev,dependent);
depnum = pnp_get_max_depnum(dev);
priority = 0x100 | p[1];
option = pnp_register_dependent_option(dev, priority);
if (!option)
return NULL;
break;
}
case SMALL_TAG_ENDDEP:
{
if (len != 0)
goto sm_err;
depnum = 0;
break;
}
case SMALL_TAG_PORT:
{
if (len != 7)
goto sm_err;
possible_port(p,len,depnum,dev);
possible_port(p,len,option);
break;
}
case SMALL_TAG_FIXEDPORT:
{
if (len != 3)
goto sm_err;
possible_fixed_port(p,len,depnum,dev);
possible_fixed_port(p,len,option);
break;
}
case SMALL_TAG_END:
......
drivers/serial/8250_pnp.c
View file @ 40ca599a
......@@ -315,19 +315,6 @@ static const struct pnp_device_id pnp_dev_table[] = {
MODULE_DEVICE_TABLE(pnp, pnp_dev_table);
static inline void avoid_irq_share(struct pnp_dev *dev)
{
unsigned int map = 0x1FF8;
struct pnp_irq *irq;
struct pnp_resources *res = dev->possible;
serial8250_get_irq_map(&map);
for ( ; res; res = res->dep)
for (irq = res->irq; irq; irq = irq->next)
irq->map = map;
}
static char *modem_names[] __devinitdata = {
"MODEM", "Modem", "modem", "FAX", "Fax", "fax",
"56K", "56k", "K56", "33.6", "28.8", "14.4",
......@@ -346,6 +333,29 @@ static int __devinit check_name(char *name)
return 0;
}
static int __devinit check_resources(struct pnp_option *option)
{
struct pnp_option *tmp;
if (!option)
return 0;
for (tmp = option; tmp; tmp = tmp->next) {
struct pnp_port *port;
for (port = tmp->port; port; port = port->next)
if ((port->size == 8) &&
((port->min == 0x2f8) ||
(port->min == 0x3f8) ||
(port->min == 0x2e8) ||
#ifdef CONFIG_X86_PC9800
(port->min == 0x8b0) ||
#endif
(port->min == 0x3e8)))
return 1;
}
return 0;
}
/*
* Given a complete unknown PnP device, try to use some heuristics to
* detect modems. Currently use such heuristic set:
......@@ -357,30 +367,16 @@ static int __devinit check_name(char *name)
* PnP modems, alternatively we must hardcode all modems in pnp_devices[]
* table.
*/
static int serial_pnp_guess_board(struct pnp_dev *dev, int *flags)
static int __devinit serial_pnp_guess_board(struct pnp_dev *dev, int *flags)
{
struct pnp_resources *res = dev->possible;
struct pnp_resources *resa;
if (!(check_name(dev->dev.name) || (dev->card && check_name(dev->card->dev.name))))
return -ENODEV;
if (!res)
return -ENODEV;
if (check_resources(dev->independent))
return 0;
for (resa = res->dep; resa; resa = resa->dep) {
struct pnp_port *port;
for (port = res->port; port; port = port->next)
if ((port->size == 8) &&
((port->min == 0x2f8) ||
(port->min == 0x3f8) ||
(port->min == 0x2e8) ||
#ifdef CONFIG_X86_PC9800
(port->min == 0x8b0) ||
#endif
(port->min == 0x3e8)))
return 0;
}
if (check_resources(dev->dependent))
return 0;
return -ENODEV;
}
......@@ -395,8 +391,6 @@ serial_pnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id)
if (ret < 0)
return ret;
}
if (flags & SPCI_FL_NO_SHIRQ)
avoid_irq_share(dev);
memset(&serial_req, 0, sizeof(serial_req));
serial_req.irq = pnp_irq(dev,0);
serial_req.port = pnp_port_start(dev, 0);
......
include/linux/pnp.h
View file @ 40ca599a
......@@ -102,22 +102,13 @@ struct pnp_mem {
#define PNP_RES_PRIORITY_FUNCTIONAL 2
#define PNP_RES_PRIORITY_INVALID 65535
struct pnp_resources {
struct pnp_option {
unsigned short priority; /* priority */
struct pnp_port *port; /* first port */
struct pnp_irq *irq; /* first IRQ */
struct pnp_dma *dma; /* first DMA */
struct pnp_mem *mem; /* first memory resource */
struct pnp_dev *dev; /* parent */
struct pnp_resources *dep; /* dependent resources */
};
struct pnp_rule_table {
int depnum;
struct pnp_port *port[PNP_MAX_PORT];
struct pnp_irq *irq[PNP_MAX_IRQ];
struct pnp_dma *dma[PNP_MAX_DMA];
struct pnp_mem *mem[PNP_MAX_MEM];
struct pnp_option *next; /* used to chain dependent resources */
};
struct pnp_resource_table {
......@@ -187,8 +178,6 @@ static inline void pnp_set_card_drvdata (struct pnp_card_link *pcard, void *data
struct pnp_dev {
struct device dev; /* Driver Model device interface */
unsigned char number; /* used as an index, must be unique */
int active;
int capabilities;
int status;
struct list_head global_list; /* node in global list of devices */
......@@ -201,11 +190,13 @@ struct pnp_dev {
struct pnp_driver * driver;
struct pnp_card_link * card_link;
struct pnp_id * id; /* supported EISA IDs*/
struct pnp_resource_table res; /* contains the currently chosen resources */
struct pnp_resources * possible; /* a list of possible resources */
struct pnp_rule_table * rule; /* the current possible resource set */
int config_mode; /* flags that determine how the device's resources should be configured */
struct pnp_id * id; /* supported EISA IDs*/
int active;
int capabilities;
struct pnp_option * independent;
struct pnp_option * dependent;
struct pnp_resource_table res;
void * protocol_data; /* Used to store protocol specific data */
unsigned short regs; /* ISAPnP: supported registers */
......@@ -252,11 +243,9 @@ struct pnp_fixup {
void (*quirk_function)(struct pnp_dev *dev); /* fixup function */
};
/* config modes */
#define PNP_CONFIG_AUTO 0x0001 /* Use the Resource Configuration Engine to determine resource settings */
#define PNP_CONFIG_MANUAL 0x0002 /* the config has been manually specified */
#define PNP_CONFIG_FORCE 0x0004 /* disables validity checking */
#define PNP_CONFIG_INVALID 0x0008 /* If this flag is set, the pnp layer will refuse to activate the device */
/* config parameters */
#define PNP_CONFIG_NORMAL 0x0001
#define PNP_CONFIG_FORCE 0x0002 /* disables validity checking */
/* capabilities */
#define PNP_READ 0x0001
......@@ -271,7 +260,7 @@ struct pnp_fixup {
((dev)->capabilities & PNP_WRITE))
#define pnp_can_disable(dev) (((dev)->protocol) && ((dev)->protocol->disable) && \
((dev)->capabilities & PNP_DISABLE))
#define pnp_can_configure(dev) ((!(dev)->active) && ((dev)->config_mode & PNP_CONFIG_AUTO) && \
#define pnp_can_configure(dev) ((!(dev)->active) && \
((dev)->capabilities & PNP_CONFIGURABLE))
#ifdef CONFIG_ISAPNP
......@@ -383,7 +372,7 @@ struct pnp_protocol {
#if defined(CONFIG_PNP)
/* core */
/* device management */
int pnp_register_protocol(struct pnp_protocol *protocol);
void pnp_unregister_protocol(struct pnp_protocol *protocol);
int pnp_add_device(struct pnp_dev *dev);
......@@ -392,7 +381,7 @@ int pnp_device_attach(struct pnp_dev *pnp_dev);
void pnp_device_detach(struct pnp_dev *pnp_dev);
extern struct list_head pnp_global;
/* card */
/* multidevice card support */
int pnp_add_card(struct pnp_card *card);
void pnp_remove_card(struct pnp_card *card);
int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev);
......@@ -404,41 +393,35 @@ int pnp_register_card_driver(struct pnp_card_driver * drv);
void pnp_unregister_card_driver(struct pnp_card_driver * drv);
extern struct list_head pnp_cards;
/* resource */
struct pnp_resources * pnp_build_resource(struct pnp_dev *dev, int dependent);
struct pnp_resources * pnp_find_resources(struct pnp_dev *dev, int depnum);
int pnp_get_max_depnum(struct pnp_dev *dev);
int pnp_add_irq_resource(struct pnp_dev *dev, int depnum, struct pnp_irq *data);
int pnp_add_dma_resource(struct pnp_dev *dev, int depnum, struct pnp_dma *data);
int pnp_add_port_resource(struct pnp_dev *dev, int depnum, struct pnp_port *data);
int pnp_add_mem_resource(struct pnp_dev *dev, int depnum, struct pnp_mem *data);
void pnp_init_resource_table(struct pnp_resource_table *table);
int pnp_generate_rule(struct pnp_dev * dev, int depnum, struct pnp_rule_table * rule);
/* manager */
/* resource management */
struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev);
struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority);
int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data);
int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data);
int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data);
int pnp_register_mem_resource(struct pnp_option *option, struct pnp_mem *data);
void pnp_init_resources(struct pnp_resource_table *table);
int pnp_assign_resources(struct pnp_dev *dev, int depnum);
int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table *res, int mode);
int pnp_auto_config_dev(struct pnp_dev *dev);
int pnp_validate_config(struct pnp_dev *dev);
int pnp_activate_dev(struct pnp_dev *dev);
int pnp_disable_dev(struct pnp_dev *dev);
void pnp_resource_change(struct resource *resource, unsigned long start, unsigned long size);
int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table *res, int mode);
int pnp_auto_config_dev(struct pnp_dev *dev);
/* driver */
int compare_pnp_id(struct pnp_id * pos, const char * id);
int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev);
int pnp_register_driver(struct pnp_driver *drv);
void pnp_unregister_driver(struct pnp_driver *drv);
/* support */
/* protocol helpers */
int pnp_is_active(struct pnp_dev * dev);
unsigned char * pnp_parse_current_resources(unsigned char * p, unsigned char * end, struct pnp_resource_table * res);
unsigned char * pnp_parse_possible_resources(unsigned char * p, unsigned char * end, struct pnp_dev * dev);
unsigned char * pnp_write_resources(unsigned char * p, unsigned char * end, struct pnp_resource_table * res);
int compare_pnp_id(struct pnp_id * pos, const char * id);
int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev);
int pnp_register_driver(struct pnp_driver *drv);
void pnp_unregister_driver(struct pnp_driver *drv);
#else
/* just in case anyone decides to call these without PnP Support Enabled */
/* core */
/* device management */
static inline int pnp_register_protocol(struct pnp_protocol *protocol) { return -ENODEV; }
static inline void pnp_unregister_protocol(struct pnp_protocol *protocol) { }
static inline int pnp_init_device(struct pnp_dev *dev) { return -ENODEV; }
......@@ -447,7 +430,7 @@ static inline void pnp_remove_device(struct pnp_dev *dev) { }
static inline int pnp_device_attach(struct pnp_dev *pnp_dev) { return -ENODEV; }
static inline void pnp_device_detach(struct pnp_dev *pnp_dev) { ; }
/* card */
/* multidevice card support */
static inline int pnp_add_card(struct pnp_card *card) { return -ENODEV; }
static inline void pnp_remove_card(struct pnp_card *card) { ; }
static inline int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev) { return -ENODEV; }
......@@ -458,35 +441,31 @@ static inline void pnp_release_card_device(struct pnp_dev * dev) { ; }
static inline int pnp_register_card_driver(struct pnp_card_driver * drv) { return -ENODEV; }
static inline void pnp_unregister_card_driver(struct pnp_card_driver * drv) { ; }
/* resource */
static inline struct pnp_resources * pnp_build_resource(struct pnp_dev *dev, int dependent) { return NULL; }
static inline struct pnp_resources * pnp_find_resources(struct pnp_dev *dev, int depnum) { return NULL; }
static inline int pnp_get_max_depnum(struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_add_irq_resource(struct pnp_dev *dev, int depnum, struct pnp_irq *data) { return -ENODEV; }
static inline int pnp_add_dma_resource(struct pnp_dev *dev, int depnum, struct pnp_irq *data) { return -ENODEV; }
static inline int pnp_add_port_resource(struct pnp_dev *dev, int depnum, struct pnp_irq *data) { return -ENODEV; }
static inline int pnp_add_mem_resource(struct pnp_dev *dev, int depnum, struct pnp_irq *data) { return -ENODEV; }
static inline void pnp_init_resource_table(struct pnp_resource_table *table) { ; }
static inline int pnp_generate_rule(struct pnp_dev * dev, int depnum, struct pnp_rule_table * rule) { return -ENODEV; }
/* manager */
static inline int pnp_activate_dev(struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_disable_dev(struct pnp_dev *dev) { return -ENODEV; }
static inline void pnp_resource_change(struct resource *resource, unsigned long start, unsigned long size) { ; }
/* resource management */
static inline struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev) { return NULL; }
static inline struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority) { return NULL; }
static inline int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data) { return -ENODEV; }
static inline int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data) { return -ENODEV; }
static inline int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data) { return -ENODEV; }
static inline int pnp_register_mem_resource(struct pnp_option *option, struct pnp_mem *data) { return -ENODEV; }
static inline void pnp_init_resources(struct pnp_resource_table *table) { }
static inline int pnp_assign_resources(struct pnp_dev *dev, int depnum) { return -ENODEV; }
static inline int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table *res, int mode) { return -ENODEV; }
static inline int pnp_auto_config_dev(struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_validate_config(struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_activate_dev(struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_disable_dev(struct pnp_dev *dev) { return -ENODEV; }
static inline void pnp_resource_change(struct resource *resource, unsigned long start, unsigned long size) { }
/* driver */
static inline int compare_pnp_id(struct list_head * id_list, const char * id) { return -ENODEV; }
static inline int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; }
static inline void pnp_unregister_driver(struct pnp_driver *drv) { ; }
/* support */
static inline int pnp_is_active(struct pnp_dev * dev) { return -ENODEV; }
/* protocol helpers */
static inline int pnp_is_active(struct pnp_dev * dev) { return 0; }
static inline unsigned char * pnp_parse_current_resources(unsigned char * p, unsigned char * end, struct pnp_resource_table * res) { return NULL; }
static inline unsigned char * pnp_parse_possible_resources(unsigned char * p, unsigned char * end, struct pnp_dev * dev) { return NULL; }
static inline unsigned char * pnp_write_resources(unsigned char * p, unsigned char * end, struct pnp_resource_table * res) { return NULL; }
static inline int compare_pnp_id(struct pnp_id * pos, const char * id) { return -ENODEV; }
static inline int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev) { return -ENODEV; }
static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; }
static inline void pnp_unregister_driver(struct pnp_driver *drv) { ; }
#endif /* CONFIG_PNP */
......
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