diff options
| -rw-r--r-- | drivers/net/fjes/fjes_hw.c | 101 | ||||
| -rw-r--r-- | drivers/net/fjes/fjes_hw.h | 24 | ||||
| -rw-r--r-- | drivers/net/fjes/fjes_regs.h | 23 |
3 files changed, 148 insertions, 0 deletions
diff --git a/drivers/net/fjes/fjes_hw.c b/drivers/net/fjes/fjes_hw.c index 757cece85387..c31be7f52ab9 100644 --- a/drivers/net/fjes/fjes_hw.c +++ b/drivers/net/fjes/fjes_hw.c @@ -351,6 +351,107 @@ void fjes_hw_exit(struct fjes_hw *hw) fjes_hw_cleanup(hw); } +static enum fjes_dev_command_response_e +fjes_hw_issue_request_command(struct fjes_hw *hw, + enum fjes_dev_command_request_type type) +{ + enum fjes_dev_command_response_e ret = FJES_CMD_STATUS_UNKNOWN; + union REG_CR cr; + union REG_CS cs; + int timeout; + + cr.reg = 0; + cr.bits.req_start = 1; + cr.bits.req_code = type; + wr32(XSCT_CR, cr.reg); + cr.reg = rd32(XSCT_CR); + + if (cr.bits.error == 0) { + timeout = FJES_COMMAND_REQ_TIMEOUT * 1000; + cs.reg = rd32(XSCT_CS); + + while ((cs.bits.complete != 1) && timeout > 0) { + msleep(1000); + cs.reg = rd32(XSCT_CS); + timeout -= 1000; + } + + if (cs.bits.complete == 1) + ret = FJES_CMD_STATUS_NORMAL; + else if (timeout <= 0) + ret = FJES_CMD_STATUS_TIMEOUT; + + } else { + switch (cr.bits.err_info) { + case FJES_CMD_REQ_ERR_INFO_PARAM: + ret = FJES_CMD_STATUS_ERROR_PARAM; + break; + case FJES_CMD_REQ_ERR_INFO_STATUS: + ret = FJES_CMD_STATUS_ERROR_STATUS; + break; + default: + ret = FJES_CMD_STATUS_UNKNOWN; + break; + } + } + + return ret; +} + +int fjes_hw_request_info(struct fjes_hw *hw) +{ + union fjes_device_command_req *req_buf = hw->hw_info.req_buf; + union fjes_device_command_res *res_buf = hw->hw_info.res_buf; + enum fjes_dev_command_response_e ret; + int result; + + memset(req_buf, 0, hw->hw_info.req_buf_size); + memset(res_buf, 0, hw->hw_info.res_buf_size); + + req_buf->info.length = FJES_DEV_COMMAND_INFO_REQ_LEN; + + res_buf->info.length = 0; + res_buf->info.code = 0; + + ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_INFO); + + result = 0; + + if (FJES_DEV_COMMAND_INFO_RES_LEN((*hw->hw_info.max_epid)) != + res_buf->info.length) { + result = -ENOMSG; + } else if (ret == FJES_CMD_STATUS_NORMAL) { + switch (res_buf->info.code) { + case FJES_CMD_REQ_RES_CODE_NORMAL: + result = 0; + break; + default: + result = -EPERM; + break; + } + } else { + switch (ret) { + case FJES_CMD_STATUS_UNKNOWN: + result = -EPERM; + break; + case FJES_CMD_STATUS_TIMEOUT: + result = -EBUSY; + break; + case FJES_CMD_STATUS_ERROR_PARAM: + result = -EPERM; + break; + case FJES_CMD_STATUS_ERROR_STATUS: + result = -EPERM; + break; + default: + result = -EPERM; + break; + } + } + + return result; +} + void fjes_hw_set_irqmask(struct fjes_hw *hw, enum REG_ICTL_MASK intr_mask, bool mask) { diff --git a/drivers/net/fjes/fjes_hw.h b/drivers/net/fjes/fjes_hw.h index 1b3e9cac2746..cc1ef2100dc4 100644 --- a/drivers/net/fjes/fjes_hw.h +++ b/drivers/net/fjes/fjes_hw.h @@ -34,6 +34,12 @@ struct fjes_hw; #define EP_BUFFER_INFO_SIZE 4096 #define FJES_DEVICE_RESET_TIMEOUT ((17 + 1) * 3) /* sec */ +#define FJES_COMMAND_REQ_TIMEOUT (5 + 1) /* sec */ + +#define FJES_CMD_REQ_ERR_INFO_PARAM (0x0001) +#define FJES_CMD_REQ_ERR_INFO_STATUS (0x0002) + +#define FJES_CMD_REQ_RES_CODE_NORMAL (0) #define EP_BUFFER_SIZE \ (((sizeof(union ep_buffer_info) + (128 * (64 * 1024))) \ @@ -50,6 +56,7 @@ struct fjes_hw; ((size) - sizeof(struct esmem_frame) - \ (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)) +#define FJES_DEV_COMMAND_INFO_REQ_LEN (4) #define FJES_DEV_COMMAND_INFO_RES_LEN(epnum) (8 + 2 * (epnum)) #define FJES_DEV_COMMAND_SHARE_BUFFER_REQ_LEN(txb, rxb) \ (24 + (8 * ((txb) / EP_BUFFER_INFO_SIZE + (rxb) / EP_BUFFER_INFO_SIZE))) @@ -124,6 +131,13 @@ union fjes_device_command_res { } stop_trace; }; +/* request command type */ +enum fjes_dev_command_request_type { + FJES_CMD_REQ_INFO = 0x0001, + FJES_CMD_REQ_SHARE_BUFFER = 0x0002, + FJES_CMD_REQ_UNSHARE_BUFFER = 0x0004, +}; + /* parameter for command control */ struct fjes_device_command_param { u32 req_len; @@ -133,6 +147,15 @@ struct fjes_device_command_param { phys_addr_t share_start; }; +/* error code for command control */ +enum fjes_dev_command_response_e { + FJES_CMD_STATUS_UNKNOWN, + FJES_CMD_STATUS_NORMAL, + FJES_CMD_STATUS_TIMEOUT, + FJES_CMD_STATUS_ERROR_PARAM, + FJES_CMD_STATUS_ERROR_STATUS, +}; + /* EP buffer information */ union ep_buffer_info { u8 raw[EP_BUFFER_INFO_SIZE]; @@ -243,6 +266,7 @@ struct fjes_hw { int fjes_hw_init(struct fjes_hw *); void fjes_hw_exit(struct fjes_hw *); int fjes_hw_reset(struct fjes_hw *); +int fjes_hw_request_info(struct fjes_hw *); void fjes_hw_init_command_registers(struct fjes_hw *, struct fjes_device_command_param *); diff --git a/drivers/net/fjes/fjes_regs.h b/drivers/net/fjes/fjes_regs.h index 4d0e0719645e..cc975a0fd111 100644 --- a/drivers/net/fjes/fjes_regs.h +++ b/drivers/net/fjes/fjes_regs.h @@ -35,6 +35,8 @@ #define XSCT_DCTL 0x0010 /* Device Control */ /* Command Control registers */ +#define XSCT_CR 0x0020 /* Command request */ +#define XSCT_CS 0x0024 /* Command status */ #define XSCT_SHSTSAL 0x0028 /* Share status address Low */ #define XSCT_SHSTSAH 0x002C /* Share status address High */ @@ -78,6 +80,27 @@ union REG_DCTL { __le32 reg; }; +/* Command Control registers */ +union REG_CR { + struct { + __le32 req_code:16; + __le32 err_info:14; + __le32 error:1; + __le32 req_start:1; + } bits; + __le32 reg; +}; + +union REG_CS { + struct { + __le32 req_code:16; + __le32 rsv0:14; + __le32 busy:1; + __le32 complete:1; + } bits; + __le32 reg; +}; + enum REG_ICTL_MASK { REG_ICTL_MASK_INFO_UPDATE = 1 << 20, REG_ICTL_MASK_DEV_STOP_REQ = 1 << 19, |