pcmcia: CardBus doesn't need CIS access
At least no in-kernel CardBus-capable PCI driver makes use of the CIS
access functions. Therefore, it seems sensible to remove this unused
code, and cleanup cardbus.c a lot.
CC: Jesse Barnes <jbarnes@virtuousgeek.org>
CC: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c
index a8323cb..368367c 100644
--- a/drivers/pcmcia/cistpl.c
+++ b/drivers/pcmcia/cistpl.c
@@ -268,29 +268,27 @@
static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr,
size_t len, void *ptr)
{
- struct cis_cache_entry *cis;
- int ret;
+ struct cis_cache_entry *cis;
+ int ret;
- if (s->fake_cis) {
- if (s->fake_cis_len >= addr+len)
- memcpy(ptr, s->fake_cis+addr, len);
- else
- memset(ptr, 0xff, len);
- return;
- }
+ if (s->state & SOCKET_CARDBUS)
+ return;
- list_for_each_entry(cis, &s->cis_cache, node) {
- if (cis->addr == addr && cis->len == len && cis->attr == attr) {
- memcpy(ptr, cis->cache, len);
- return;
+ if (s->fake_cis) {
+ if (s->fake_cis_len >= addr+len)
+ memcpy(ptr, s->fake_cis+addr, len);
+ else
+ memset(ptr, 0xff, len);
+ return;
}
- }
-#ifdef CONFIG_CARDBUS
- if (s->state & SOCKET_CARDBUS)
- ret = read_cb_mem(s, attr, addr, len, ptr);
- else
-#endif
+ list_for_each_entry(cis, &s->cis_cache, node) {
+ if (cis->addr == addr && cis->len == len && cis->attr == attr) {
+ memcpy(ptr, cis->cache, len);
+ return;
+ }
+ }
+
ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr);
if (ret == 0) {
@@ -351,6 +349,9 @@
struct cis_cache_entry *cis;
char *buf;
+ if (s->state & SOCKET_CARDBUS)
+ return -EINVAL;
+
buf = kmalloc(256, GFP_KERNEL);
if (buf == NULL) {
dev_printk(KERN_WARNING, &s->dev,
@@ -362,12 +363,8 @@
if (len > 256)
len = 256;
-#ifdef CONFIG_CARDBUS
- if (s->state & SOCKET_CARDBUS)
- read_cb_mem(s, cis->attr, cis->addr, len, buf);
- else
-#endif
- pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
+
+ pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
if (memcmp(buf, cis->cache, len) != 0) {
kfree(buf);
@@ -427,25 +424,16 @@
{
if (!s)
return -EINVAL;
- if (!(s->state & SOCKET_PRESENT))
+
+ if (!(s->state & SOCKET_PRESENT) || (s->state & SOCKET_CARDBUS))
return -ENODEV;
tuple->TupleLink = tuple->Flags = 0;
-#ifdef CONFIG_CARDBUS
- if (s->state & SOCKET_CARDBUS) {
- struct pci_dev *dev = s->cb_dev;
- u_int ptr;
- pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr);
- tuple->CISOffset = ptr & ~7;
- SPACE(tuple->Flags) = (ptr & 7);
- } else
-#endif
- {
- /* Assume presence of a LONGLINK_C to address 0 */
- tuple->CISOffset = tuple->LinkOffset = 0;
- SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
- }
- if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) &&
- !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
+
+ /* Assume presence of a LONGLINK_C to address 0 */
+ tuple->CISOffset = tuple->LinkOffset = 0;
+ SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
+
+ if ((s->functions > 1) && !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
cisdata_t req = tuple->DesiredTuple;
tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
if (pccard_get_next_tuple(s, function, tuple) == 0) {
@@ -481,7 +469,7 @@
} else {
return -1;
}
- if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) {
+ if (SPACE(tuple->Flags)) {
/* This is ugly, but a common CIS error is to code the long
link offset incorrectly, so we check the right spot... */
read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
@@ -507,7 +495,7 @@
if (!s)
return -EINVAL;
- if (!(s->state & SOCKET_PRESENT))
+ if (!(s->state & SOCKET_PRESENT) || (s->state & SOCKET_CARDBUS))
return -ENODEV;
link[1] = tuple->TupleLink;
@@ -1192,119 +1180,6 @@
/*====================================================================*/
-#ifdef CONFIG_CARDBUS
-
-static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
-{
- u_char *p;
- if (tuple->TupleDataLen < 6)
- return -EINVAL;
- p = (u_char *)tuple->TupleData;
- bar->attr = *p;
- p += 2;
- bar->size = get_unaligned_le32(p);
- return 0;
-}
-
-static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
-{
- u_char *p;
-
- p = (u_char *)tuple->TupleData;
- if ((*p != 3) || (tuple->TupleDataLen < 6))
- return -EINVAL;
- config->last_idx = *(++p);
- p++;
- config->base = get_unaligned_le32(p);
- config->subtuples = tuple->TupleDataLen - 6;
- return 0;
-}
-
-static int parse_cftable_entry_cb(tuple_t *tuple,
- cistpl_cftable_entry_cb_t *entry)
-{
- u_char *p, *q, features;
-
- p = tuple->TupleData;
- q = p + tuple->TupleDataLen;
- entry->index = *p & 0x3f;
- entry->flags = 0;
- if (*p & 0x40)
- entry->flags |= CISTPL_CFTABLE_DEFAULT;
-
- /* Process optional features */
- if (++p == q)
- return -EINVAL;
- features = *p; p++;
-
- /* Power options */
- if ((features & 3) > 0) {
- p = parse_power(p, q, &entry->vcc);
- if (p == NULL)
- return -EINVAL;
- } else
- entry->vcc.present = 0;
- if ((features & 3) > 1) {
- p = parse_power(p, q, &entry->vpp1);
- if (p == NULL)
- return -EINVAL;
- } else
- entry->vpp1.present = 0;
- if ((features & 3) > 2) {
- p = parse_power(p, q, &entry->vpp2);
- if (p == NULL)
- return -EINVAL;
- } else
- entry->vpp2.present = 0;
-
- /* I/O window options */
- if (features & 0x08) {
- if (p == q)
- return -EINVAL;
- entry->io = *p; p++;
- } else
- entry->io = 0;
-
- /* Interrupt options */
- if (features & 0x10) {
- p = parse_irq(p, q, &entry->irq);
- if (p == NULL)
- return -EINVAL;
- } else
- entry->irq.IRQInfo1 = 0;
-
- if (features & 0x20) {
- if (p == q)
- return -EINVAL;
- entry->mem = *p; p++;
- } else
- entry->mem = 0;
-
- /* Misc features */
- if (features & 0x80) {
- if (p == q)
- return -EINVAL;
- entry->flags |= (*p << 8);
- if (*p & 0x80) {
- if (++p == q)
- return -EINVAL;
- entry->flags |= (*p << 16);
- }
- while (*p & 0x80)
- if (++p == q)
- return -EINVAL;
- p++;
- }
-
- entry->subtuples = q-p;
-
- return 0;
-}
-
-#endif
-
-/*====================================================================*/
-
static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
{
u_char *p, *q;
@@ -1406,17 +1281,6 @@
case CISTPL_DEVICE_A:
ret = parse_device(tuple, &parse->device);
break;
-#ifdef CONFIG_CARDBUS
- case CISTPL_BAR:
- ret = parse_bar(tuple, &parse->bar);
- break;
- case CISTPL_CONFIG_CB:
- ret = parse_config_cb(tuple, &parse->config);
- break;
- case CISTPL_CFTABLE_ENTRY_CB:
- ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
- break;
-#endif
case CISTPL_CHECKSUM:
ret = parse_checksum(tuple, &parse->checksum);
break;