summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/firewire/core-card.c62
-rw-r--r--drivers/firewire/core.h7
-rw-r--r--drivers/firewire/ohci.c30
-rw-r--r--include/linux/firewire.h14
4 files changed, 60 insertions, 53 deletions
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index 33898b63cdf7..f73e3bdfc84c 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -38,6 +38,18 @@
#include "core.h"
+static int __compute_block_crc(__be32 *block)
+{
+ int length;
+ u16 crc;
+
+ length = (be32_to_cpu(block[0]) >> 16) & 0xff;
+ crc = crc_itu_t(0, (u8 *)&block[1], length * 4);
+ *block |= cpu_to_be32(crc);
+
+ return length;
+}
+
int fw_compute_block_crc(u32 *block)
{
__be32 be32_block[256];
@@ -72,11 +84,11 @@ static int descriptor_count;
#define BIB_CMC ((1) << 30)
#define BIB_IMC ((1) << 31)
-static u32 *generate_config_rom(struct fw_card *card, size_t *config_rom_length)
+static __be32 *generate_config_rom(struct fw_card *card, size_t *rom_length)
{
struct fw_descriptor *desc;
- static u32 config_rom[256];
- int i, j, length;
+ static __be32 config_rom[256];
+ int i, j, k, length;
/*
* Initialize contents of config rom buffer. On the OHCI
@@ -87,40 +99,39 @@ static u32 *generate_config_rom(struct fw_card *card, size_t *config_rom_length)
* the version stored in the OHCI registers.
*/
- memset(config_rom, 0, sizeof(config_rom));
- config_rom[0] = BIB_CRC_LENGTH(4) | BIB_INFO_LENGTH(4) | BIB_CRC(0);
- config_rom[1] = 0x31333934;
-
- config_rom[2] =
+ config_rom[0] = cpu_to_be32(
+ BIB_CRC_LENGTH(4) | BIB_INFO_LENGTH(4) | BIB_CRC(0));
+ config_rom[1] = cpu_to_be32(0x31333934);
+ config_rom[2] = cpu_to_be32(
BIB_LINK_SPEED(card->link_speed) |
BIB_GENERATION(card->config_rom_generation++ % 14 + 2) |
BIB_MAX_ROM(2) |
BIB_MAX_RECEIVE(card->max_receive) |
- BIB_BMC | BIB_ISC | BIB_CMC | BIB_IMC;
- config_rom[3] = card->guid >> 32;
- config_rom[4] = card->guid;
+ BIB_BMC | BIB_ISC | BIB_CMC | BIB_IMC);
+ config_rom[3] = cpu_to_be32(card->guid >> 32);
+ config_rom[4] = cpu_to_be32(card->guid);
/* Generate root directory. */
- i = 5;
- config_rom[i++] = 0;
- config_rom[i++] = 0x0c0083c0; /* node capabilities */
- j = i + descriptor_count;
+ config_rom[6] = cpu_to_be32(0x0c0083c0); /* node capabilities */
+ i = 7;
+ j = 7 + descriptor_count;
/* Generate root directory entries for descriptors. */
list_for_each_entry (desc, &descriptor_list, link) {
if (desc->immediate > 0)
- config_rom[i++] = desc->immediate;
- config_rom[i] = desc->key | (j - i);
+ config_rom[i++] = cpu_to_be32(desc->immediate);
+ config_rom[i] = cpu_to_be32(desc->key | (j - i));
i++;
j += desc->length;
}
/* Update root directory length. */
- config_rom[5] = (i - 5 - 1) << 16;
+ config_rom[5] = cpu_to_be32((i - 5 - 1) << 16);
/* End of root directory, now copy in descriptors. */
list_for_each_entry (desc, &descriptor_list, link) {
- memcpy(&config_rom[i], desc->data, desc->length * 4);
+ for (k = 0; k < desc->length; k++)
+ config_rom[i + k] = cpu_to_be32(desc->data[k]);
i += desc->length;
}
@@ -129,9 +140,9 @@ static u32 *generate_config_rom(struct fw_card *card, size_t *config_rom_length)
* the bus info block, which is always the case for this
* implementation. */
for (i = 0; i < j; i += length + 1)
- length = fw_compute_block_crc(config_rom + i);
+ length = __compute_block_crc(config_rom + i);
- *config_rom_length = j;
+ *rom_length = j;
return config_rom;
}
@@ -139,7 +150,7 @@ static u32 *generate_config_rom(struct fw_card *card, size_t *config_rom_length)
static void update_config_roms(void)
{
struct fw_card *card;
- u32 *config_rom;
+ __be32 *config_rom;
size_t length;
list_for_each_entry (card, &card_list, link) {
@@ -432,7 +443,7 @@ EXPORT_SYMBOL(fw_card_initialize);
int fw_card_add(struct fw_card *card,
u32 max_receive, u32 link_speed, u64 guid)
{
- u32 *config_rom;
+ __be32 *config_rom;
size_t length;
int ret;
@@ -462,7 +473,8 @@ EXPORT_SYMBOL(fw_card_add);
* shutdown still need to be provided by the card driver.
*/
-static int dummy_enable(struct fw_card *card, u32 *config_rom, size_t length)
+static int dummy_enable(struct fw_card *card,
+ const __be32 *config_rom, size_t length)
{
BUG();
return -1;
@@ -475,7 +487,7 @@ static int dummy_update_phy_reg(struct fw_card *card, int address,
}
static int dummy_set_config_rom(struct fw_card *card,
- u32 *config_rom, size_t length)
+ const __be32 *config_rom, size_t length)
{
/*
* We take the card out of card_list before setting the dummy
diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h
index 7ff6e7585152..7adca7cb9f55 100644
--- a/drivers/firewire/core.h
+++ b/drivers/firewire/core.h
@@ -40,7 +40,8 @@ struct fw_card_driver {
* enable the PHY or set the link_on bit and initiate a bus
* reset.
*/
- int (*enable)(struct fw_card *card, u32 *config_rom, size_t length);
+ int (*enable)(struct fw_card *card,
+ const __be32 *config_rom, size_t length);
int (*update_phy_reg)(struct fw_card *card, int address,
int clear_bits, int set_bits);
@@ -48,10 +49,10 @@ struct fw_card_driver {
/*
* Update the config rom for an enabled card. This function
* should change the config rom that is presented on the bus
- * an initiate a bus reset.
+ * and initiate a bus reset.
*/
int (*set_config_rom)(struct fw_card *card,
- u32 *config_rom, size_t length);
+ const __be32 *config_rom, size_t length);
void (*send_request)(struct fw_card *card, struct fw_packet *packet);
void (*send_response)(struct fw_card *card, struct fw_packet *packet);
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 5d524254499e..418415564791 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -205,7 +205,7 @@ struct fw_ohci {
dma_addr_t config_rom_bus;
__be32 *next_config_rom;
dma_addr_t next_config_rom_bus;
- u32 next_header;
+ __be32 next_header;
struct ar_context ar_request_ctx;
struct ar_context ar_response_ctx;
@@ -1355,8 +1355,9 @@ static void bus_reset_tasklet(unsigned long data)
*/
reg_write(ohci, OHCI1394_BusOptions,
be32_to_cpu(ohci->config_rom[2]));
- ohci->config_rom[0] = cpu_to_be32(ohci->next_header);
- reg_write(ohci, OHCI1394_ConfigROMhdr, ohci->next_header);
+ ohci->config_rom[0] = ohci->next_header;
+ reg_write(ohci, OHCI1394_ConfigROMhdr,
+ be32_to_cpu(ohci->next_header));
}
#ifdef CONFIG_FIREWIRE_OHCI_REMOTE_DMA
@@ -1464,7 +1465,17 @@ static int software_reset(struct fw_ohci *ohci)
return -EBUSY;
}
-static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length)
+static void copy_config_rom(__be32 *dest, const __be32 *src, size_t length)
+{
+ size_t size = length * 4;
+
+ memcpy(dest, src, size);
+ if (size < CONFIG_ROM_SIZE)
+ memset(&dest[length], 0, CONFIG_ROM_SIZE - size);
+}
+
+static int ohci_enable(struct fw_card *card,
+ const __be32 *config_rom, size_t length)
{
struct fw_ohci *ohci = fw_ohci(card);
struct pci_dev *dev = to_pci_dev(card->device);
@@ -1565,8 +1576,7 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length)
if (ohci->next_config_rom == NULL)
return -ENOMEM;
- memset(ohci->next_config_rom, 0, CONFIG_ROM_SIZE);
- fw_memcpy_to_be32(ohci->next_config_rom, config_rom, length * 4);
+ copy_config_rom(ohci->next_config_rom, config_rom, length);
} else {
/*
* In the suspend case, config_rom is NULL, which
@@ -1576,7 +1586,7 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length)
ohci->next_config_rom_bus = ohci->config_rom_bus;
}
- ohci->next_header = be32_to_cpu(ohci->next_config_rom[0]);
+ ohci->next_header = ohci->next_config_rom[0];
ohci->next_config_rom[0] = 0;
reg_write(ohci, OHCI1394_ConfigROMhdr, 0);
reg_write(ohci, OHCI1394_BusOptions,
@@ -1610,7 +1620,7 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length)
}
static int ohci_set_config_rom(struct fw_card *card,
- u32 *config_rom, size_t length)
+ const __be32 *config_rom, size_t length)
{
struct fw_ohci *ohci;
unsigned long flags;
@@ -1659,9 +1669,7 @@ static int ohci_set_config_rom(struct fw_card *card,
ohci->next_config_rom = next_config_rom;
ohci->next_config_rom_bus = next_config_rom_bus;
- memset(ohci->next_config_rom, 0, CONFIG_ROM_SIZE);
- fw_memcpy_to_be32(ohci->next_config_rom, config_rom,
- length * 4);
+ copy_config_rom(ohci->next_config_rom, config_rom, length);
ohci->next_header = config_rom[0];
ohci->next_config_rom[0] = 0;
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
index 7e1d4dec83e7..53b9217de86c 100644
--- a/include/linux/firewire.h
+++ b/include/linux/firewire.h
@@ -20,20 +20,6 @@
#define fw_notify(s, args...) printk(KERN_NOTICE KBUILD_MODNAME ": " s, ## args)
#define fw_error(s, args...) printk(KERN_ERR KBUILD_MODNAME ": " s, ## args)
-static inline void fw_memcpy_from_be32(void *_dst, void *_src, size_t size)
-{
- u32 *dst = _dst;
- __be32 *src = _src;
- int i;
-
- for (i = 0; i < size / 4; i++)
- dst[i] = be32_to_cpu(src[i]);
-}
-
-static inline void fw_memcpy_to_be32(void *_dst, void *_src, size_t size)
-{
- fw_memcpy_from_be32(_dst, _src, size);
-}
#define CSR_REGISTER_BASE 0xfffff0000000ULL
/* register offsets are relative to CSR_REGISTER_BASE */
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-20 22:36:59 +0000