cvmx-zip.c revision 210286 
1/***********************license start***************
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38
39
40
41
42
43
44/**
45 * @file
46 *
47 * Source file for the zip (deflate) block
48 *
49 * <hr>$Revision: 41586 $<hr>
50 */
51
52#include "executive-config.h"
53#include "cvmx-config.h"
54#include "cvmx.h"
55#include "cvmx-cmd-queue.h"
56#include "cvmx-zip.h"
57
58#ifdef CVMX_ENABLE_PKO_FUNCTIONS
59
60/**
61 * Initialize the ZIP block
62 *
63 * @return Zero on success, negative on failure
64 */
65int cvmx_zip_initialize(void)
66{
67    cvmx_zip_cmd_buf_t zip_cmd_buf;
68    cvmx_cmd_queue_result_t result;
69    result = cvmx_cmd_queue_initialize(CVMX_CMD_QUEUE_ZIP, 0,
70                                       CVMX_FPA_OUTPUT_BUFFER_POOL,
71                                       CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE);
72    if (result != CVMX_CMD_QUEUE_SUCCESS)
73        return -1;
74
75    zip_cmd_buf.u64 = 0;
76    zip_cmd_buf.s.dwb = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE/128;
77    zip_cmd_buf.s.pool = CVMX_FPA_OUTPUT_BUFFER_POOL;
78    zip_cmd_buf.s.size = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE/8;
79    zip_cmd_buf.s.ptr =  cvmx_ptr_to_phys(cvmx_cmd_queue_buffer(CVMX_CMD_QUEUE_ZIP))>>7;
80    cvmx_write_csr(CVMX_ZIP_CMD_BUF, zip_cmd_buf.u64);
81    cvmx_write_csr(CVMX_ZIP_ERROR, 1);
82    cvmx_read_csr(CVMX_ZIP_CMD_BUF); /* Read to make sure setup is complete */
83    return 0;
84}
85
86/**
87 * Shutdown the ZIP block. ZIP must be idle when
88 * this function is called.
89 *
90 * @return Zero on success, negative on failure
91 */
92int cvmx_zip_shutdown(void)
93{
94    cvmx_zip_cmd_ctl_t zip_cmd_ctl;
95
96    if (cvmx_cmd_queue_length(CVMX_CMD_QUEUE_ZIP))
97    {
98        cvmx_dprintf("ERROR: cvmx_zip_shutdown: ZIP not idle.\n");
99        return -1;
100    }
101
102    zip_cmd_ctl.u64 = cvmx_read_csr(CVMX_ZIP_CMD_CTL);
103    zip_cmd_ctl.s.reset = 1;
104    cvmx_write_csr(CVMX_ZIP_CMD_CTL, zip_cmd_ctl.u64);
105    cvmx_wait(100);
106
107    cvmx_cmd_queue_shutdown(CVMX_CMD_QUEUE_ZIP);
108    return 0;
109}
110
111/**
112 * Submit a command to the ZIP block
113 *
114 * @param command Zip command to submit
115 *
116 * @return Zero on success, negative on failure
117 */
118int cvmx_zip_submit(cvmx_zip_command_t *command)
119{
120    cvmx_cmd_queue_result_t result = cvmx_cmd_queue_write(CVMX_CMD_QUEUE_ZIP, 1, 8, command->u64);
121    if (result == CVMX_CMD_QUEUE_SUCCESS)
122        cvmx_write_csr(CVMX_ADDR_DID(CVMX_FULL_DID(7, 0)), 8);
123    return result;
124}
125
126#endif
127
128