Release 4.11 drivers/mmc/core/sdio_cis.c
/*
* linux/drivers/mmc/core/sdio_cis.c
*
* Author: Nicolas Pitre
* Created: June 11, 2007
* Copyright: MontaVista Software Inc.
*
* Copyright 2007 Pierre Ossman
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/slab.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_vers_1(struct mmc_card *card, struct sdio_func *func,
const unsigned char *buf, unsigned size)
{
unsigned i, nr_strings;
char **buffer, *string;
/* Find all null-terminated (including zero length) strings in
the TPLLV1_INFO field. Trailing garbage is ignored. */
buf += 2;
size -= 2;
nr_strings = 0;
for (i = 0; i < size; i++) {
if (buf[i] == 0xff)
break;
if (buf[i] == 0)
nr_strings++;
}
if (nr_strings == 0)
return 0;
size = i;
buffer = kzalloc(sizeof(char*) * nr_strings + size, GFP_KERNEL);
if (!buffer)
return -ENOMEM;
string = (char*)(buffer + nr_strings);
for (i = 0; i < nr_strings; i++) {
buffer[i] = string;
strcpy(string, buf);
string += strlen(string) + 1;
buf += strlen(buf) + 1;
}
if (func) {
func->num_info = nr_strings;
func->info = (const char**)buffer;
} else {
card->num_info = nr_strings;
card->info = (const char**)buffer;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 230 | 98.29% | 1 | 33.33% |
| David Vrabel | 3 | 1.28% | 1 | 33.33% |
| Roel Kluin | 1 | 0.43% | 1 | 33.33% |
| Total | 234 | 100.00% | 3 | 100.00% |
static int cistpl_manfid(struct mmc_card *card, struct sdio_func *func,
const unsigned char *buf, unsigned size)
{
unsigned int vendor, device;
/* TPLMID_MANF */
vendor = buf[0] | (buf[1] << 8);
/* TPLMID_CARD */
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 64 | 60.95% | 1 | 50.00% |
| Nico Pitre | 41 | 39.05% | 1 | 50.00% |
| Total | 105 | 100.00% | 2 | 100.00% |
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 };
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;
tpl_parse_t *parse;
};
static int cis_tpl_parse(struct mmc_card *card, struct sdio_func *func,
const char *tpl_descr,
const struct cis_tpl *tpl, int tpl_count,
unsigned char code,
const unsigned char *buf, unsigned size)
{
int i, ret;
/* look for a matching code in the table */
for (i = 0; i < tpl_count; i++, tpl++) {
if (tpl->code == code)
break;
}
if (i < tpl_count) {
if (size >= tpl->min_size) {
if (tpl->parse)
ret = tpl->parse(card, func, buf, size);
else
ret = -EILSEQ; /* known tuple, not parsed */
} else {
/* invalid tuple */
ret = -EINVAL;
}
if (ret && ret != -EILSEQ && ret != -ENOENT) {
pr_err("%s: bad %s tuple 0x%02x (%u bytes)\n",
mmc_hostname(card->host), tpl_descr, code, size);
}
} else {
/* unknown tuple */
ret = -ENOENT;
}
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Albert Herranz | 176 | 99.44% | 2 | 66.67% |
| Girish K.S | 1 | 0.56% | 1 | 33.33% |
| Total | 177 | 100.00% | 3 | 100.00% |
static int cistpl_funce_common(struct mmc_card *card, struct sdio_func *func,
const unsigned char *buf, unsigned size)
{
/* Only valid for the common CIS (function 0) */
if (func)
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 75 | 84.27% | 1 | 33.33% |
| Nico Pitre | 7 | 7.87% | 1 | 33.33% |
| Albert Herranz | 7 | 7.87% | 1 | 33.33% |
| Total | 89 | 100.00% | 3 | 100.00% |
static int cistpl_funce_func(struct mmc_card *card, struct sdio_func *func,
const unsigned char *buf, unsigned size)
{
unsigned vsn;
unsigned min_size;
/* Only valid for the individual function's CIS (1-7) */
if (!func)
return -EINVAL;
/*
* This tuple has a different length depending on the SDIO spec
* version.
*/
vsn = func->card->cccr.sdio_vsn;
min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;
if (size == 28 && vsn == SDIO_SDIO_REV_1_10) {
pr_warn("%s: card has broken SDIO 1.1 CIS, forcing SDIO 1.0\n",
mmc_hostname(card->host));
vsn = SDIO_SDIO_REV_1_00;
} else if (size < min_size) {
return -EINVAL;
}
/* TPLFE_MAX_BLK_SIZE */
func->max_blksize = buf[12] | (buf[13] << 8);
/* TPLFE_ENABLE_TIMEOUT_VAL, present in ver 1.1 and above */
if (vsn > SDIO_SDIO_REV_1_00)
func->enable_timeout = (buf[28] | (buf[29] << 8)) * 10;
else
func->enable_timeout = jiffies_to_msecs(HZ);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 71 | 42.77% | 1 | 14.29% |
| Benzi Zbit | 39 | 23.49% | 1 | 14.29% |
| Wolfram Sang | 31 | 18.67% | 1 | 14.29% |
| Albert Herranz | 16 | 9.64% | 2 | 28.57% |
| Nico Pitre | 8 | 4.82% | 1 | 14.29% |
| David Vrabel | 1 | 0.60% | 1 | 14.29% |
| Total | 166 | 100.00% | 7 | 100.00% |
/*
* Known TPLFE_TYPEs table for CISTPL_FUNCE tuples.
*
* Note that, unlike PCMCIA, CISTPL_FUNCE tuples are not parsed depending
* on the TPLFID_FUNCTION value of the previous CISTPL_FUNCID as on SDIO
* TPLFID_FUNCTION is always hardcoded to 0x0C.
*/
static const struct cis_tpl cis_tpl_funce_list[] = {
{ 0x00, 4, cistpl_funce_common },
{ 0x01, 0, cistpl_funce_func },
{ 0x04, 1+1+6, /* CISTPL_FUNCE_LAN_NODE_ID */ },
};
static int cistpl_funce(struct mmc_card *card, struct sdio_func *func,
const unsigned char *buf, unsigned size)
{
if (size < 1)
return -EINVAL;
return cis_tpl_parse(card, func, "CISTPL_FUNCE",
cis_tpl_funce_list,
ARRAY_SIZE(cis_tpl_funce_list),
buf[0], buf, size);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 42 | 68.85% | 1 | 50.00% |
| Albert Herranz | 19 | 31.15% | 1 | 50.00% |
| Total | 61 | 100.00% | 2 | 100.00% |
/* Known TPL_CODEs table for CIS tuples */
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 },
{ 0x91, 2, /* cistpl_sdio_std */ },
};
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, fn;
if (func)
fn = func->num;
else
fn = 0;
ret = mmc_io_rw_direct(card, 0, 0,
SDIO_FBR_BASE(fn) + SDIO_FBR_CIS + i, 0, &x);
if (ret)
return ret;
ptr |= x << (i * 8);
}
if (func)
prev = &func->tuples;
else
prev = &card->tuples;
if (*prev)
return -EINVAL;
do {
unsigned char tpl_code, tpl_link;
ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_code);
if (ret)
break;
/* 0xff means we're done */
if (tpl_code == 0xff)
break;
/* null entries have no link field or data */
if (tpl_code == 0x00)
continue;
ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
if (ret)
break;
/* a size of 0xff also means we're done */
if (tpl_link == 0xff)
break;
this = kmalloc(sizeof(*this) + tpl_link, GFP_KERNEL);
if (!this)
return -ENOMEM;
for (i = 0; i < tpl_link; i++) {
ret = mmc_io_rw_direct(card, 0, 0,
ptr + i, 0, &this->data[i]);
if (ret)
break;
}
if (ret) {
kfree(this);
break;
}
/* Try to parse the CIS tuple */
ret = cis_tpl_parse(card, func, "CIS",
cis_tpl_list, ARRAY_SIZE(cis_tpl_list),
tpl_code, this->data, tpl_link);
if (ret == -EILSEQ || ret == -ENOENT) {
/*
* The tuple is unknown or known but not parsed.
* Queue the tuple for the function driver.
*/
this->next = NULL;
this->code = tpl_code;
this->size = tpl_link;
*prev = this;
prev = &this->next;
if (ret == -ENOENT) {
/* warn about unknown tuples */
pr_warn_ratelimited("%s: queuing unknown"
" CIS tuple 0x%02x (%u bytes)\n",
mmc_hostname(card->host),
tpl_code, tpl_link);
}
/* keep on analyzing tuples */
ret = 0;
} else {
/*
* We don't need the tuple anymore if it was
* successfully parsed by the SDIO core or if it is
* not going to be queued for a driver.
*/
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nico Pitre | 269 | 60.86% | 2 | 20.00% |
| Albert Herranz | 95 | 21.49% | 2 | 20.00% |
| Pierre Ossman | 67 | 15.16% | 3 | 30.00% |
| Shawn Lin | 7 | 1.58% | 1 | 10.00% |
| David Vrabel | 3 | 0.68% | 1 | 10.00% |
| Chuansheng Liu | 1 | 0.23% | 1 | 10.00% |
| Total | 442 | 100.00% | 10 | 100.00% |
int sdio_read_common_cis(struct mmc_card *card)
{
return sdio_read_cis(card, NULL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
void sdio_free_common_cis(struct mmc_card *card)
{
struct sdio_func_tuple *tuple, *victim;
tuple = card->tuples;
while (tuple) {
victim = tuple;
tuple = tuple->next;
kfree(victim);
}
card->tuples = NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 51 | 100.00% | 1 | 100.00% |
| Total | 51 | 100.00% | 1 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 76 | 95.00% | 1 | 50.00% |
| Nico Pitre | 4 | 5.00% | 1 | 50.00% |
| Total | 80 | 100.00% | 2 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nico Pitre | 50 | 71.43% | 2 | 66.67% |
| Pierre Ossman | 20 | 28.57% | 1 | 33.33% |
| Total | 70 | 100.00% | 3 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pierre Ossman | 789 | 46.01% | 4 | 21.05% |
| Nico Pitre | 437 | 25.48% | 2 | 10.53% |
| Albert Herranz | 391 | 22.80% | 2 | 10.53% |
| Benzi Zbit | 39 | 2.27% | 1 | 5.26% |
| Wolfram Sang | 31 | 1.81% | 1 | 5.26% |
| Shawn Lin | 15 | 0.87% | 2 | 10.53% |
| David Vrabel | 7 | 0.41% | 3 | 15.79% |
| Tejun Heo | 3 | 0.17% | 1 | 5.26% |
| Girish K.S | 1 | 0.06% | 1 | 5.26% |
| Roel Kluin | 1 | 0.06% | 1 | 5.26% |
| Chuansheng Liu | 1 | 0.06% | 1 | 5.26% |
| Total | 1715 | 100.00% | 19 | 100.00% |
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