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Linux Kernel
3.7.1
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Linux Kernel
3.7.1
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Go to the source code of this file.
Data Structures | |
| struct | __cvmx_cmd_queue_state_t |
| struct | __cvmx_cmd_queue_all_state_t |
Macros | |
| #define | CVMX_CMD_QUEUE_ENABLE_MAX_DEPTH 0 |
| #define | CVMX_CMD_QUEUE_PKO(queue) ((cvmx_cmd_queue_id_t)(CVMX_CMD_QUEUE_PKO_BASE + (0xffff&(queue)))) |
| #define | CVMX_CMD_QUEUE_DMA(queue) ((cvmx_cmd_queue_id_t)(CVMX_CMD_QUEUE_DMA_BASE + (0xffff&(queue)))) |
Enumerations | |
| enum | cvmx_cmd_queue_id_t { CVMX_CMD_QUEUE_PKO_BASE = 0x00000, CVMX_CMD_QUEUE_ZIP = 0x10000, CVMX_CMD_QUEUE_DFA = 0x20000, CVMX_CMD_QUEUE_RAID = 0x30000, CVMX_CMD_QUEUE_DMA_BASE = 0x40000, CVMX_CMD_QUEUE_END = 0x50000 } |
| enum | cvmx_cmd_queue_result_t { CVMX_CMD_QUEUE_SUCCESS = 0, CVMX_CMD_QUEUE_NO_MEMORY = -1, CVMX_CMD_QUEUE_FULL = -2, CVMX_CMD_QUEUE_INVALID_PARAM = -3, CVMX_CMD_QUEUE_ALREADY_SETUP = -4 } |
Functions | |
| cvmx_cmd_queue_result_t | cvmx_cmd_queue_initialize (cvmx_cmd_queue_id_t queue_id, int max_depth, int fpa_pool, int pool_size) |
| cvmx_cmd_queue_result_t | cvmx_cmd_queue_shutdown (cvmx_cmd_queue_id_t queue_id) |
| int | cvmx_cmd_queue_length (cvmx_cmd_queue_id_t queue_id) |
| void * | cvmx_cmd_queue_buffer (cvmx_cmd_queue_id_t queue_id) |
| #define CVMX_CMD_QUEUE_DMA | ( | queue | ) | ((cvmx_cmd_queue_id_t)(CVMX_CMD_QUEUE_DMA_BASE + (0xffff&(queue)))) |
Definition at line 106 of file cvmx-cmd-queue.h.
| #define CVMX_CMD_QUEUE_ENABLE_MAX_DEPTH 0 |
By default we disable the max depth support. Most programs don't use it and it slows down the command queue processing significantly.
Definition at line 86 of file cvmx-cmd-queue.h.
| #define CVMX_CMD_QUEUE_PKO | ( | queue | ) | ((cvmx_cmd_queue_id_t)(CVMX_CMD_QUEUE_PKO_BASE + (0xffff&(queue)))) |
Definition at line 98 of file cvmx-cmd-queue.h.
| enum cvmx_cmd_queue_id_t |
Enumeration representing all hardware blocks that use command queues. Each hardware block has up to 65536 sub identifiers for multiple command queues. Not all chips support all hardware units.
| CVMX_CMD_QUEUE_PKO_BASE | |
| CVMX_CMD_QUEUE_ZIP | |
| CVMX_CMD_QUEUE_DFA | |
| CVMX_CMD_QUEUE_RAID | |
| CVMX_CMD_QUEUE_DMA_BASE | |
| CVMX_CMD_QUEUE_END |
Definition at line 95 of file cvmx-cmd-queue.h.
Command write operations can fail if the command queue needs a new buffer and the associated FPA pool is empty. It can also fail if the number of queued command words reaches the maximum set at initialization.
| CVMX_CMD_QUEUE_SUCCESS | |
| CVMX_CMD_QUEUE_NO_MEMORY | |
| CVMX_CMD_QUEUE_FULL | |
| CVMX_CMD_QUEUE_INVALID_PARAM | |
| CVMX_CMD_QUEUE_ALREADY_SETUP |
Definition at line 118 of file cvmx-cmd-queue.h.
| void* cvmx_cmd_queue_buffer | ( | cvmx_cmd_queue_id_t | queue_id | ) |
Return the command buffer to be written to. The purpose of this function is to allow CVMX routine access t othe low level buffer for initial hardware setup. User applications should not call this function directly.
: Command queue to query
Returns Command buffer or NULL on failure
Definition at line 299 of file cvmx-cmd-queue.c.
| cvmx_cmd_queue_result_t cvmx_cmd_queue_initialize | ( | cvmx_cmd_queue_id_t | queue_id, |
| int | max_depth, | ||
| int | fpa_pool, | ||
| int | pool_size | ||
| ) |
Initialize a command queue for use. The initial FPA buffer is allocated and the hardware unit is configured to point to the new command queue.
: Hardware command queue to initialize. : Maximum outstanding commands that can be queued. : FPA pool the command queues should come from. : Size of each buffer in the FPA pool (bytes)
Returns CVMX_CMD_QUEUE_SUCCESS or a failure code
Definition at line 111 of file cvmx-cmd-queue.c.
| int cvmx_cmd_queue_length | ( | cvmx_cmd_queue_id_t | queue_id | ) |
Return the number of command words pending in the queue. This function may be relatively slow for some hardware units.
: Hardware command queue to query
Returns Number of outstanding commands
Definition at line 241 of file cvmx-cmd-queue.c.
| cvmx_cmd_queue_result_t cvmx_cmd_queue_shutdown | ( | cvmx_cmd_queue_id_t | queue_id | ) |
Shutdown a queue a free it's command buffers to the FPA. The hardware connected to the queue must be stopped before this function is called.
: Queue to shutdown
Returns CVMX_CMD_QUEUE_SUCCESS or a failure code
Definition at line 206 of file cvmx-cmd-queue.c.
1.8.2