diff options
| -rw-r--r-- | drivers/thunderbolt/nvm.c | 95 | ||||
| -rw-r--r-- | drivers/thunderbolt/tb.h | 11 | ||||
| -rw-r--r-- | drivers/thunderbolt/usb4.c | 110 |
3 files changed, 124 insertions, 92 deletions
diff --git a/drivers/thunderbolt/nvm.c b/drivers/thunderbolt/nvm.c index 29de6d95c6e7..3a5336913cca 100644 --- a/drivers/thunderbolt/nvm.c +++ b/drivers/thunderbolt/nvm.c @@ -164,6 +164,101 @@ void tb_nvm_free(struct tb_nvm *nvm) kfree(nvm); } +/** + * tb_nvm_read_data() - Read data from NVM + * @address: Start address on the flash + * @buf: Buffer where the read data is copied + * @size: Size of the buffer in bytes + * @retries: Number of retries if block read fails + * @read_block: Function that reads block from the flash + * @read_block_data: Data passsed to @read_block + * + * This is a generic function that reads data from NVM or NVM like + * device. + * + * Returns %0 on success and negative errno otherwise. + */ +int tb_nvm_read_data(unsigned int address, void *buf, size_t size, + unsigned int retries, read_block_fn read_block, + void *read_block_data) +{ + do { + unsigned int dwaddress, dwords, offset; + u8 data[NVM_DATA_DWORDS * 4]; + size_t nbytes; + int ret; + + offset = address & 3; + nbytes = min_t(size_t, size + offset, NVM_DATA_DWORDS * 4); + + dwaddress = address / 4; + dwords = ALIGN(nbytes, 4) / 4; + + ret = read_block(read_block_data, dwaddress, data, dwords); + if (ret) { + if (ret != -ENODEV && retries--) + continue; + return ret; + } + + nbytes -= offset; + memcpy(buf, data + offset, nbytes); + + size -= nbytes; + address += nbytes; + buf += nbytes; + } while (size > 0); + + return 0; +} + +/** + * tb_nvm_write_data() - Write data to NVM + * @address: Start address on the flash + * @buf: Buffer where the data is copied from + * @size: Size of the buffer in bytes + * @retries: Number of retries if the block write fails + * @write_block: Function that writes block to the flash + * @write_block_data: Data passwd to @write_block + * + * This is generic function that writes data to NVM or NVM like device. + * + * Returns %0 on success and negative errno otherwise. + */ +int tb_nvm_write_data(unsigned int address, const void *buf, size_t size, + unsigned int retries, write_block_fn write_block, + void *write_block_data) +{ + do { + unsigned int offset, dwaddress; + u8 data[NVM_DATA_DWORDS * 4]; + size_t nbytes; + int ret; + + offset = address & 3; + nbytes = min_t(u32, size + offset, NVM_DATA_DWORDS * 4); + + memcpy(data + offset, buf, nbytes); + + dwaddress = address / 4; + ret = write_block(write_block_data, dwaddress, data, nbytes / 4); + if (ret) { + if (ret == -ETIMEDOUT) { + if (retries--) + continue; + ret = -EIO; + } + return ret; + } + + size -= nbytes; + address += nbytes; + buf += nbytes; + } while (size > 0); + + return 0; +} + void tb_nvm_exit(void) { ida_destroy(&nvm_ida); diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 9790e9f13d2b..d9d1adc4cfd3 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -20,6 +20,7 @@ #define NVM_MIN_SIZE SZ_32K #define NVM_MAX_SIZE SZ_512K +#define NVM_DATA_DWORDS 16 /* Intel specific NVM offsets */ #define NVM_DEVID 0x05 @@ -674,6 +675,16 @@ int tb_nvm_add_non_active(struct tb_nvm *nvm, size_t size, void tb_nvm_free(struct tb_nvm *nvm); void tb_nvm_exit(void); +typedef int (*read_block_fn)(void *, unsigned int, void *, size_t); +typedef int (*write_block_fn)(void *, unsigned int, const void *, size_t); + +int tb_nvm_read_data(unsigned int address, void *buf, size_t size, + unsigned int retries, read_block_fn read_block, + void *read_block_data); +int tb_nvm_write_data(unsigned int address, const void *buf, size_t size, + unsigned int retries, write_block_fn write_next_block, + void *write_block_data); + struct tb_switch *tb_switch_alloc(struct tb *tb, struct device *parent, u64 route); struct tb_switch *tb_switch_alloc_safe_mode(struct tb *tb, diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c index 671d72af8ba1..c0a14bfa36d4 100644 --- a/drivers/thunderbolt/usb4.c +++ b/drivers/thunderbolt/usb4.c @@ -13,7 +13,6 @@ #include "sb_regs.h" #include "tb.h" -#define USB4_DATA_DWORDS 16 #define USB4_DATA_RETRIES 3 enum usb4_sb_target { @@ -37,9 +36,6 @@ enum usb4_sb_target { #define USB4_NVM_SECTOR_SIZE_MASK GENMASK(23, 0) -typedef int (*read_block_fn)(void *, unsigned int, void *, size_t); -typedef int (*write_block_fn)(void *, const void *, size_t); - static int usb4_switch_wait_for_bit(struct tb_switch *sw, u32 offset, u32 bit, u32 value, int timeout_msec) { @@ -62,76 +58,6 @@ static int usb4_switch_wait_for_bit(struct tb_switch *sw, u32 offset, u32 bit, return -ETIMEDOUT; } -static int usb4_do_read_data(u16 address, void *buf, size_t size, - read_block_fn read_block, void *read_block_data) -{ - unsigned int retries = USB4_DATA_RETRIES; - unsigned int offset; - - do { - unsigned int dwaddress, dwords; - u8 data[USB4_DATA_DWORDS * 4]; - size_t nbytes; - int ret; - - offset = address & 3; - nbytes = min_t(size_t, size + offset, USB4_DATA_DWORDS * 4); - - dwaddress = address / 4; - dwords = ALIGN(nbytes, 4) / 4; - - ret = read_block(read_block_data, dwaddress, data, dwords); - if (ret) { - if (ret != -ENODEV && retries--) - continue; - return ret; - } - - nbytes -= offset; - memcpy(buf, data + offset, nbytes); - - size -= nbytes; - address += nbytes; - buf += nbytes; - } while (size > 0); - - return 0; -} - -static int usb4_do_write_data(unsigned int address, const void *buf, size_t size, - write_block_fn write_next_block, void *write_block_data) -{ - unsigned int retries = USB4_DATA_RETRIES; - unsigned int offset; - - offset = address & 3; - address = address & ~3; - - do { - u32 nbytes = min_t(u32, size, USB4_DATA_DWORDS * 4); - u8 data[USB4_DATA_DWORDS * 4]; - int ret; - - memcpy(data + offset, buf, nbytes); - - ret = write_next_block(write_block_data, data, nbytes / 4); - if (ret) { - if (ret == -ETIMEDOUT) { - if (retries--) - continue; - ret = -EIO; - } - return ret; - } - - size -= nbytes; - address += nbytes; - buf += nbytes; - } while (size > 0); - - return 0; -} - static int usb4_native_switch_op(struct tb_switch *sw, u16 opcode, u32 *metadata, u8 *status, const void *tx_data, size_t tx_dwords, @@ -193,7 +119,7 @@ static int __usb4_switch_op(struct tb_switch *sw, u16 opcode, u32 *metadata, { const struct tb_cm_ops *cm_ops = sw->tb->cm_ops; - if (tx_dwords > USB4_DATA_DWORDS || rx_dwords > USB4_DATA_DWORDS) + if (tx_dwords > NVM_DATA_DWORDS || rx_dwords > NVM_DATA_DWORDS) return -EINVAL; /* @@ -414,8 +340,8 @@ static int usb4_switch_drom_read_block(void *data, int usb4_switch_drom_read(struct tb_switch *sw, unsigned int address, void *buf, size_t size) { - return usb4_do_read_data(address, buf, size, - usb4_switch_drom_read_block, sw); + return tb_nvm_read_data(address, buf, size, USB4_DATA_RETRIES, + usb4_switch_drom_read_block, sw); } /** @@ -595,8 +521,8 @@ static int usb4_switch_nvm_read_block(void *data, int usb4_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf, size_t size) { - return usb4_do_read_data(address, buf, size, - usb4_switch_nvm_read_block, sw); + return tb_nvm_read_data(address, buf, size, USB4_DATA_RETRIES, + usb4_switch_nvm_read_block, sw); } static int usb4_switch_nvm_set_offset(struct tb_switch *sw, @@ -618,8 +544,8 @@ static int usb4_switch_nvm_set_offset(struct tb_switch *sw, return status ? -EIO : 0; } -static int usb4_switch_nvm_write_next_block(void *data, const void *buf, - size_t dwords) +static int usb4_switch_nvm_write_next_block(void *data, unsigned int dwaddress, + const void *buf, size_t dwords) { struct tb_switch *sw = data; u8 status; @@ -652,8 +578,8 @@ int usb4_switch_nvm_write(struct tb_switch *sw, unsigned int address, if (ret) return ret; - return usb4_do_write_data(address, buf, size, - usb4_switch_nvm_write_next_block, sw); + return tb_nvm_write_data(address, buf, size, USB4_DATA_RETRIES, + usb4_switch_nvm_write_next_block, sw); } /** @@ -1029,7 +955,7 @@ static int usb4_port_wait_for_bit(struct tb_port *port, u32 offset, u32 bit, static int usb4_port_read_data(struct tb_port *port, void *data, size_t dwords) { - if (dwords > USB4_DATA_DWORDS) + if (dwords > NVM_DATA_DWORDS) return -EINVAL; return tb_port_read(port, data, TB_CFG_PORT, port->cap_usb4 + PORT_CS_2, @@ -1039,7 +965,7 @@ static int usb4_port_read_data(struct tb_port *port, void *data, size_t dwords) static int usb4_port_write_data(struct tb_port *port, const void *data, size_t dwords) { - if (dwords > USB4_DATA_DWORDS) + if (dwords > NVM_DATA_DWORDS) return -EINVAL; return tb_port_write(port, data, TB_CFG_PORT, port->cap_usb4 + PORT_CS_2, @@ -1316,8 +1242,8 @@ struct retimer_info { u8 index; }; -static int usb4_port_retimer_nvm_write_next_block(void *data, const void *buf, - size_t dwords) +static int usb4_port_retimer_nvm_write_next_block(void *data, + unsigned int dwaddress, const void *buf, size_t dwords) { const struct retimer_info *info = data; @@ -1357,8 +1283,8 @@ int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index, unsigned int add if (ret) return ret; - return usb4_do_write_data(address, buf, size, - usb4_port_retimer_nvm_write_next_block, &info); + return tb_nvm_write_data(address, buf, size, USB4_DATA_RETRIES, + usb4_port_retimer_nvm_write_next_block, &info); } /** @@ -1442,7 +1368,7 @@ static int usb4_port_retimer_nvm_read_block(void *data, unsigned int dwaddress, int ret; metadata = dwaddress << USB4_NVM_READ_OFFSET_SHIFT; - if (dwords < USB4_DATA_DWORDS) + if (dwords < NVM_DATA_DWORDS) metadata |= dwords << USB4_NVM_READ_LENGTH_SHIFT; ret = usb4_port_retimer_write(port, index, USB4_SB_METADATA, &metadata, @@ -1475,8 +1401,8 @@ int usb4_port_retimer_nvm_read(struct tb_port *port, u8 index, { struct retimer_info info = { .port = port, .index = index }; - return usb4_do_read_data(address, buf, size, - usb4_port_retimer_nvm_read_block, &info); + return tb_nvm_read_data(address, buf, size, USB4_DATA_RETRIES, + usb4_port_retimer_nvm_read_block, &info); } /** |