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-rw-r--r--drivers/mmc/core/bus.c3
-rw-r--r--drivers/mmc/core/sdio.c9
-rw-r--r--drivers/mmc/core/sdio_bus.c2
-rw-r--r--drivers/mmc/core/sdio_cis.c198
-rw-r--r--drivers/mmc/core/sdio_cis.h7
-rw-r--r--include/linux/mmc/card.h10
-rw-r--r--include/linux/mmc/sdio_func.h2
7 files changed, 205 insertions, 26 deletions
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index 87a6070522f..9be11ec05d8 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -19,6 +19,7 @@
#include "sysfs.h"
#include "core.h"
+#include "sdio_cis.h"
#include "bus.h"
#define dev_to_mmc_card(d) container_of(d, struct mmc_card, dev)
@@ -181,6 +182,8 @@ static void mmc_release_card(struct device *dev)
{
struct mmc_card *card = dev_to_mmc_card(dev);
+ sdio_free_common_cis(card);
+
kfree(card);
}
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index c5baf76146b..1fb36a34046 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -66,7 +66,7 @@ static int sdio_init_func(struct mmc_card *card, unsigned int fn)
if (ret)
goto fail;
- ret = sdio_read_cis(func);
+ ret = sdio_read_func_cis(func);
if (ret)
goto fail;
@@ -287,6 +287,13 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
goto remove;
/*
+ * Read the common CIS tuples.
+ */
+ err = sdio_read_common_cis(card);
+ if (err)
+ goto remove;
+
+ /*
* Initialize (but don't add) all present functions.
*/
for (i = 0;i < funcs;i++) {
diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c
index 78e0381f55a..461fe4837a9 100644
--- a/drivers/mmc/core/sdio_bus.c
+++ b/drivers/mmc/core/sdio_bus.c
@@ -95,7 +95,7 @@ static void sdio_release_func(struct device *dev)
{
struct sdio_func *func = dev_to_sdio_func(dev);
- sdio_free_cis(func);
+ sdio_free_func_cis(func);
kfree(func);
}
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index b6c7342572c..ec806a1229b 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -16,60 +16,152 @@
#include <linux/kernel.h>
#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sdio_func.h>
#include "sdio_cis.h"
#include "sdio_ops.h"
-static int cistpl_manfid(struct sdio_func *func,
- const unsigned char *buf,
- unsigned size)
+static int cistpl_manfid(struct mmc_card *card, struct sdio_func *func,
+ const unsigned char *buf, unsigned size)
{
+ unsigned int vendor, device;
+
/* TPLMID_MANF */
- func->vendor = buf[0] | (buf[1] << 8);
+ vendor = buf[0] | (buf[1] << 8);
/* TPLMID_CARD */
- func->device = buf[2] | (buf[3] << 8);
+ device = buf[2] | (buf[3] << 8);
+
+ if (func) {
+ func->vendor = vendor;
+ func->device = device;
+ } else {
+ card->cis.vendor = vendor;
+ card->cis.device = device;
+ }
+
+ return 0;
+}
+
+static const unsigned char speed_val[16] =
+ { 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 };
+static const unsigned int speed_unit[8] =
+ { 10000, 100000, 1000000, 10000000, 0, 0, 0, 0 };
+
+static int cistpl_funce_common(struct mmc_card *card,
+ const unsigned char *buf, unsigned size)
+{
+ if (size < 0x04 || buf[0] != 0)
+ return -EINVAL;
+
+ /* TPLFE_FN0_BLK_SIZE */
+ card->cis.blksize = buf[1] | (buf[2] << 8);
+
+ /* TPLFE_MAX_TRAN_SPEED */
+ card->cis.max_dtr = speed_val[(buf[3] >> 3) & 15] *
+ speed_unit[buf[3] & 7];
+
+ return 0;
+}
+
+static int cistpl_funce_func(struct sdio_func *func,
+ const unsigned char *buf, unsigned size)
+{
+ unsigned vsn;
+ unsigned min_size;
+
+ vsn = func->card->cccr.sdio_vsn;
+ min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;
+
+ if (size < min_size || buf[0] != 1)
+ return -EINVAL;
+
+ /* TPLFE_MAX_BLK_SIZE */
+ func->blksize = buf[12] | (buf[13] << 8);
return 0;
}
+static int cistpl_funce(struct mmc_card *card, struct sdio_func *func,
+ const unsigned char *buf, unsigned size)
+{
+ int ret;
+
+ /*
+ * There should be two versions of the CISTPL_FUNCE tuple,
+ * one for the common CIS (function 0) and a version used by
+ * the individual function's CIS (1-7). Yet, the later has a
+ * different length depending on the SDIO spec version.
+ */
+ if (func)
+ ret = cistpl_funce_func(func, buf, size);
+ else
+ ret = cistpl_funce_common(card, buf, size);
+
+ if (ret) {
+ printk(KERN_ERR "%s: bad CISTPL_FUNCE size %u "
+ "type %u\n", mmc_hostname(card->host), size, buf[0]);
+ return ret;
+ }
+
+ return 0;
+}
+
+typedef int (tpl_parse_t)(struct mmc_card *, struct sdio_func *,
+ const unsigned char *, unsigned);
+
struct cis_tpl {
unsigned char code;
unsigned char min_size;
- int (*parse)(struct sdio_func *, const unsigned char *buf, unsigned size);
+ tpl_parse_t *parse;
};
static const struct cis_tpl cis_tpl_list[] = {
{ 0x15, 3, /* cistpl_vers_1 */ },
{ 0x20, 4, cistpl_manfid },
{ 0x21, 2, /* cistpl_funcid */ },
- { 0x22, 0, /* cistpl_funce */ },
+ { 0x22, 0, cistpl_funce },
};
-int sdio_read_cis(struct sdio_func *func)
+static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
{
int ret;
struct sdio_func_tuple *this, **prev;
unsigned i, ptr = 0;
+ /*
+ * Note that this works for the common CIS (function number 0) as
+ * well as a function's CIS * since SDIO_CCCR_CIS and SDIO_FBR_CIS
+ * have the same offset.
+ */
for (i = 0; i < 3; i++) {
- unsigned char x;
- ret = mmc_io_rw_direct(func->card, 0, 0,
- func->num * 0x100 + SDIO_FBR_CIS + i, 0, &x);
+ unsigned char x, fn;
+
+ if (func)
+ fn = func->num;
+ else
+ fn = 0;
+
+ ret = mmc_io_rw_direct(card, 0, 0,
+ fn * 0x100 + SDIO_FBR_CIS + i, 0, &x);
if (ret)
return ret;
ptr |= x << (i * 8);
}
- /* find the list tail */
- for (prev = &func->tuples; *prev; prev = &(*prev)->next);
+ if (func)
+ prev = &func->tuples;
+ else
+ prev = &card->tuples;
+
+ BUG_ON(*prev);
do {
unsigned char tpl_code, tpl_link;
- ret = mmc_io_rw_direct(func->card, 0, 0, ptr++, 0, &tpl_code);
+ ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_code);
if (ret)
break;
@@ -77,7 +169,7 @@ int sdio_read_cis(struct sdio_func *func)
if (tpl_code == 0xff)
break;
- ret = mmc_io_rw_direct(func->card, 0, 0, ptr++, 0, &tpl_link);
+ ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
if (ret)
break;
@@ -86,7 +178,7 @@ int sdio_read_cis(struct sdio_func *func)
return -ENOMEM;
for (i = 0; i < tpl_link; i++) {
- ret = mmc_io_rw_direct(func->card, 0, 0,
+ ret = mmc_io_rw_direct(card, 0, 0,
ptr + i, 0, &this->data[i]);
if (ret)
break;
@@ -108,30 +200,45 @@ int sdio_read_cis(struct sdio_func *func)
prev = &this->next;
printk(KERN_DEBUG
"%s: queuing CIS tuple 0x%02x length %u\n",
- sdio_func_id(func), tpl_code, tpl_link);
+ mmc_hostname(card->host), tpl_code, tpl_link);
} else {
const struct cis_tpl *tpl = cis_tpl_list + i;
if (tpl_link < tpl->min_size) {
printk(KERN_ERR
"%s: bad CIS tuple 0x%02x (length = %u, expected >= %u)\n",
- sdio_func_id(func), tpl_code, tpl_link, tpl->min_size);
+ mmc_hostname(card->host),
+ tpl_code, tpl_link, tpl->min_size);
ret = -EINVAL;
- } else if (tpl->parse)
- ret = tpl->parse(func, this->data, tpl_link);
+ } else if (tpl->parse) {
+ ret = tpl->parse(card, func,
+ this->data, tpl_link);
+ }
kfree(this);
}
ptr += tpl_link;
} while (!ret);
+ /*
+ * Link in all unknown tuples found in the common CIS so that
+ * drivers don't have to go digging in two places.
+ */
+ if (func)
+ *prev = card->tuples;
+
return ret;
}
-void sdio_free_cis(struct sdio_func *func)
+int sdio_read_common_cis(struct mmc_card *card)
+{
+ return sdio_read_cis(card, NULL);
+}
+
+void sdio_free_common_cis(struct mmc_card *card)
{
struct sdio_func_tuple *tuple, *victim;
- tuple = func->tuples;
+ tuple = card->tuples;
while (tuple) {
victim = tuple;
@@ -139,6 +246,53 @@ void sdio_free_cis(struct sdio_func *func)
kfree(victim);
}
+ card->tuples = NULL;
+}
+
+int sdio_read_func_cis(struct sdio_func *func)
+{
+ int ret;
+
+ ret = sdio_read_cis(func->card, func);
+ if (ret)
+ return ret;
+
+ /*
+ * Since we've linked to tuples in the card structure,
+ * we must make sure we have a reference to it.
+ */
+ get_device(&func->card->dev);
+
+ /*
+ * Vendor/device id is optional for function CIS, so
+ * copy it from the card structure as needed.
+ */
+ if (func->vendor == 0) {
+ func->vendor = func->card->cis.vendor;
+ func->device = func->card->cis.device;
+ }
+
+ return 0;
+}
+
+void sdio_free_func_cis(struct sdio_func *func)
+{
+ struct sdio_func_tuple *tuple, *victim;
+
+ tuple = func->tuples;
+
+ while (tuple && tuple != func->card->tuples) {
+ victim = tuple;
+ tuple = tuple->next;
+ kfree(victim);
+ }
+
func->tuples = NULL;
+
+ /*
+ * We have now removed the link to the tuples in the
+ * card structure, so remove the reference.
+ */
+ put_device(&func->card->dev);
}
diff --git a/drivers/mmc/core/sdio_cis.h b/drivers/mmc/core/sdio_cis.h
index 863d3d51637..4d903c2e425 100644
--- a/drivers/mmc/core/sdio_cis.h
+++ b/drivers/mmc/core/sdio_cis.h
@@ -14,7 +14,10 @@
#ifndef _MMC_SDIO_CIS_H
#define _MMC_SDIO_CIS_H
-int sdio_read_cis(struct sdio_func *func);
-void sdio_free_cis(struct sdio_func *func);
+int sdio_read_common_cis(struct mmc_card *card);
+void sdio_free_common_cis(struct mmc_card *card);
+
+int sdio_read_func_cis(struct sdio_func *func);
+void sdio_free_func_cis(struct sdio_func *func);
#endif
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 520d9d29b3b..a444431e28b 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -65,8 +65,16 @@ struct sdio_cccr {
high_speed:1;
};
+struct sdio_cis {
+ unsigned short vendor;
+ unsigned short device;
+ unsigned short blksize;
+ unsigned int max_dtr;
+};
+
struct mmc_host;
struct sdio_func;
+struct sdio_func_tuple;
#define SDIO_MAX_FUNCS 7
@@ -98,7 +106,9 @@ struct mmc_card {
unsigned int sdio_funcs; /* number of SDIO functions */
struct sdio_cccr cccr; /* common card info */
+ struct sdio_cis cis; /* common tuple info */
struct sdio_func *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
+ struct sdio_func_tuple *tuples; /* unknown common tuples */
};
#define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC)
diff --git a/include/linux/mmc/sdio_func.h b/include/linux/mmc/sdio_func.h
index 269067663c8..2f2b3c85441 100644
--- a/include/linux/mmc/sdio_func.h
+++ b/include/linux/mmc/sdio_func.h
@@ -36,6 +36,8 @@ struct sdio_func {
unsigned short vendor; /* vendor id */
unsigned short device; /* device id */
+ unsigned short blksize; /* maximum block size */
+
unsigned int state; /* function state */
#define SDIO_STATE_PRESENT (1<<0) /* present in sysfs */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-23 15:11:05 +0000