Commit 6ca65bec authored by Dominik Brodowski's avatar Dominik Brodowski Committed by Linus Torvalds

[PATCH] pcmcia: allocate resource database per-socket

Move the resource databases and the "mem_probe" flag into a struct
specific to rsrc_nonstatic, as it is not needed for the SS_CAP_STATIC_MAP
case. Saves a few bytes, and makes code clearer (in my opinion)
Signed-off-by: default avatarDominik Brodowski <linux@brodo.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 6238b318
......@@ -217,6 +217,12 @@ int pcmcia_register_socket(struct pcmcia_socket *socket)
cs_dbg(socket, 0, "pcmcia_register_socket(0x%p)\n", socket->ops);
if (socket->resource_ops->init) {
ret = socket->resource_ops->init(socket);
if (ret)
return (ret);
}
/* try to obtain a socket number [yes, it gets ugly if we
* register more than 2^sizeof(unsigned int) pcmcia
* sockets... but the socket number is deprecated
......@@ -250,10 +256,6 @@ int pcmcia_register_socket(struct pcmcia_socket *socket)
socket->cis_mem.flags = 0;
socket->cis_mem.speed = cis_speed;
socket->mem_db.next = &socket->mem_db;
socket->io_db.next = &socket->io_db;
INIT_LIST_HEAD(&socket->cis_cache);
spin_lock_init(&socket->lock);
......
......@@ -47,8 +47,20 @@ INT_MODULE_PARM(probe_io, 1); /* IO port probe? */
INT_MODULE_PARM(mem_limit, 0x10000);
#endif
/* for io_db and mem_db */
struct resource_map_t {
u_long base, num;
struct resource_map_t *next;
};
typedef struct resource_map_t resource_map_t;
struct socket_data {
struct resource_map_t mem_db;
struct resource_map_t io_db;
unsigned int rsrc_mem_probe;
};
static DECLARE_MUTEX(rsrc_sem);
#define MEM_PROBE_LOW (1 << 0)
#define MEM_PROBE_HIGH (1 << 1)
......@@ -179,6 +191,7 @@ static int sub_interval(resource_map_t *map, u_long base, u_long num)
static void do_io_probe(struct pcmcia_socket *s, ioaddr_t base, ioaddr_t num)
{
struct resource *res;
struct socket_data *s_data = s->resource_data;
ioaddr_t i, j, bad, any;
u_char *b, hole, most;
......@@ -221,7 +234,7 @@ static void do_io_probe(struct pcmcia_socket *s, ioaddr_t base, ioaddr_t num)
bad = any = i;
} else {
if (bad) {
sub_interval(&s->io_db, bad, i-bad);
sub_interval(&s_data->io_db, bad, i-bad);
printk(" %#04x-%#04x", bad, i-1);
bad = 0;
}
......@@ -232,7 +245,7 @@ static void do_io_probe(struct pcmcia_socket *s, ioaddr_t base, ioaddr_t num)
printk(" nothing: probe failed.\n");
return;
} else {
sub_interval(&s->io_db, bad, i-bad);
sub_interval(&s_data->io_db, bad, i-bad);
printk(" %#04x-%#04x", bad, i-1);
}
}
......@@ -351,6 +364,7 @@ checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size)
static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s)
{
struct socket_data *s_data = s->resource_data;
u_long i, j, bad, fail, step;
printk(KERN_INFO "cs: memory probe 0x%06lx-0x%06lx:",
......@@ -377,7 +391,7 @@ static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s)
if (i != j) {
if (!bad) printk(" excluding");
printk(" %#05lx-%#05lx", i, j-1);
sub_interval(&s->mem_db, i, j-i);
sub_interval(&s_data->mem_db, i, j-i);
bad += j-i;
}
}
......@@ -389,13 +403,14 @@ static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s)
static u_long inv_probe(resource_map_t *m, struct pcmcia_socket *s)
{
struct socket_data *s_data = s->resource_data;
u_long ok;
if (m == &s->mem_db)
if (m == &s_data->mem_db)
return 0;
ok = inv_probe(m->next, s);
if (ok) {
if (m->base >= 0x100000)
sub_interval(&s->mem_db, m->base, m->num);
sub_interval(&s_data->mem_db, m->base, m->num);
return ok;
}
if (m->base < 0x100000)
......@@ -408,17 +423,18 @@ static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
resource_map_t *m, mm;
static u_char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 };
u_long b, i, ok = 0;
struct socket_data *s_data = s->resource_data;
/* We do up to four passes through the list */
if (probe_mask & MEM_PROBE_HIGH) {
if (inv_probe(s->mem_db.next, s) > 0)
if (inv_probe(s_data->mem_db.next, s) > 0)
return;
printk(KERN_NOTICE "cs: warning: no high memory space "
"available!\n");
}
if ((probe_mask & MEM_PROBE_LOW) == 0)
return;
for (m = s->mem_db.next; m != &s->mem_db; m = mm.next) {
for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
mm = *m;
/* Only probe < 1 MB */
if (mm.base >= 0x100000) continue;
......@@ -431,7 +447,7 @@ static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
b = order[i] << 12;
if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) {
if (ok >= mem_limit)
sub_interval(&s->mem_db, b, 0x10000);
sub_interval(&s_data->mem_db, b, 0x10000);
else
ok += do_mem_probe(b, 0x10000, s);
}
......@@ -444,8 +460,9 @@ static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
{
resource_map_t *m, mm;
struct socket_data *s_data = s->resource_data;
for (m = s->mem_db.next; m != &s->mem_db; m = mm.next) {
for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
mm = *m;
if (do_mem_probe(mm.base, mm.num, s))
break;
......@@ -461,6 +478,7 @@ static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
*/
static void pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s)
{
struct socket_data *s_data = s->resource_data;
if (probe_mem) {
unsigned int probe_mask;
......@@ -470,8 +488,8 @@ static void pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s)
if (s->features & SS_CAP_PAGE_REGS)
probe_mask = MEM_PROBE_HIGH;
if (probe_mask & ~s->rsrc_mem_probe) {
s->rsrc_mem_probe |= probe_mask;
if (probe_mask & ~s_data->rsrc_mem_probe) {
s_data->rsrc_mem_probe |= probe_mask;
down(&s->skt_sem);
......@@ -555,10 +573,11 @@ static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_star
unsigned long r_end, struct pcmcia_socket *s)
{
resource_map_t *m;
struct socket_data *s_data = s->resource_data;
int ret = -ENOMEM;
down(&rsrc_sem);
for (m = s->io_db.next; m != &s->io_db; m = m->next) {
for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) {
unsigned long start = m->base;
unsigned long end = m->base + m->num - 1;
......@@ -590,6 +609,7 @@ struct resource *nonstatic_find_io_region(unsigned long base, int num,
unsigned long align, struct pcmcia_socket *s)
{
struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.class_id);
struct socket_data *s_data = s->resource_data;
struct pcmcia_align_data data;
unsigned long min = base;
int ret;
......@@ -599,7 +619,7 @@ struct resource *nonstatic_find_io_region(unsigned long base, int num,
data.mask = align - 1;
data.offset = base & data.mask;
data.map = &s->io_db;
data.map = &s_data->io_db;
down(&rsrc_sem);
#ifdef CONFIG_PCI
......@@ -623,6 +643,7 @@ struct resource * nonstatic_find_mem_region(u_long base, u_long num, u_long alig
int low, struct pcmcia_socket *s)
{
struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.class_id);
struct socket_data *s_data = s->resource_data;
struct pcmcia_align_data data;
unsigned long min, max;
int ret, i;
......@@ -631,7 +652,7 @@ struct resource * nonstatic_find_mem_region(u_long base, u_long num, u_long alig
data.mask = align - 1;
data.offset = base & data.mask;
data.map = &s->mem_db;
data.map = &s_data->mem_db;
for (i = 0; i < 2; i++) {
if (low) {
......@@ -669,6 +690,7 @@ struct resource * nonstatic_find_mem_region(u_long base, u_long num, u_long alig
static int adjust_memory(struct pcmcia_socket *s, adjust_t *adj)
{
u_long base, num;
struct socket_data *data = s->resource_data;
int ret;
base = adj->resource.memory.Base;
......@@ -681,10 +703,10 @@ static int adjust_memory(struct pcmcia_socket *s, adjust_t *adj)
down(&rsrc_sem);
switch (adj->Action) {
case ADD_MANAGED_RESOURCE:
ret = add_interval(&s->mem_db, base, num);
ret = add_interval(&data->mem_db, base, num);
break;
case REMOVE_MANAGED_RESOURCE:
ret = sub_interval(&s->mem_db, base, num);
ret = sub_interval(&data->mem_db, base, num);
if (ret == CS_SUCCESS) {
struct pcmcia_socket *socket;
down_read(&pcmcia_socket_list_rwsem);
......@@ -704,6 +726,7 @@ static int adjust_memory(struct pcmcia_socket *s, adjust_t *adj)
static int adjust_io(struct pcmcia_socket *s, adjust_t *adj)
{
struct socket_data *data = s->resource_data;
int base, num, ret = CS_SUCCESS;
base = adj->resource.io.BasePort;
......@@ -716,7 +739,7 @@ static int adjust_io(struct pcmcia_socket *s, adjust_t *adj)
down(&rsrc_sem);
switch (adj->Action) {
case ADD_MANAGED_RESOURCE:
if (add_interval(&s->io_db, base, num) != 0) {
if (add_interval(&data->io_db, base, num) != 0) {
ret = CS_IN_USE;
break;
}
......@@ -726,7 +749,7 @@ static int adjust_io(struct pcmcia_socket *s, adjust_t *adj)
#endif
break;
case REMOVE_MANAGED_RESOURCE:
sub_interval(&s->io_db, base, num);
sub_interval(&data->io_db, base, num);
break;
default:
ret = CS_UNSUPPORTED_FUNCTION;
......@@ -749,15 +772,32 @@ static int nonstatic_adjust_resource_info(struct pcmcia_socket *s, adjust_t *adj
return CS_UNSUPPORTED_FUNCTION;
}
static int nonstatic_init(struct pcmcia_socket *s)
{
struct socket_data *data;
data = kmalloc(sizeof(struct socket_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->mem_db.next = &data->mem_db;
data->io_db.next = &data->io_db;
s->resource_data = (void *) data;
return 0;
}
static void nonstatic_release_resource_db(struct pcmcia_socket *s)
{
struct socket_data *data = s->resource_data;
resource_map_t *p, *q;
for (p = s->mem_db.next; p != &s->mem_db; p = q) {
for (p = data->mem_db.next; p != &data->mem_db; p = q) {
q = p->next;
kfree(p);
}
for (p = s->io_db.next; p != &s->io_db; p = q) {
for (p = data->io_db.next; p != &data->io_db; p = q) {
q = p->next;
kfree(p);
}
......@@ -770,6 +810,7 @@ struct pccard_resource_ops pccard_nonstatic_ops = {
.find_io = nonstatic_find_io_region,
.find_mem = nonstatic_find_mem_region,
.adjust_resource = nonstatic_adjust_resource_info,
.init = nonstatic_init,
.exit = nonstatic_release_resource_db,
};
EXPORT_SYMBOL(pccard_nonstatic_ops);
......@@ -129,6 +129,7 @@ struct pccard_resource_ops {
struct pcmcia_socket *s);
int (*adjust_resource) (struct pcmcia_socket *s,
adjust_t *adj);
int (*init) (struct pcmcia_socket *s);
void (*exit) (struct pcmcia_socket *s);
};
/* SS_CAP_STATIC_MAP */
......@@ -167,11 +168,6 @@ struct config_t;
struct region_t;
struct pcmcia_callback;
/* for io_db and mem_db */
struct resource_map_t {
u_long base, num;
struct resource_map_t *next;
};
struct pcmcia_socket {
struct module *owner;
......@@ -197,10 +193,6 @@ struct pcmcia_socket {
struct list_head socket_list;
struct completion socket_released;
struct resource_map_t mem_db;
struct resource_map_t io_db;
unsigned int rsrc_mem_probe;
/* deprecated */
unsigned int sock; /* socket number */
......@@ -216,6 +208,7 @@ struct pcmcia_socket {
/* socket operations */
struct pccard_operations * ops;
struct pccard_resource_ops * resource_ops;
void * resource_data;
/* Zoom video behaviour is so chip specific its not worth adding
this to _ops */
......
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