cvmx-zip.c revision 215990 
1/***********************license start***************
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39
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44
45
46/**
47 * @file
48 *
49 * Source file for the zip (deflate) block
50 *
51 * <hr>$Revision: 49448 $<hr>
52 */
53
54#include "executive-config.h"
55#include "cvmx-config.h"
56#include "cvmx.h"
57#include "cvmx-cmd-queue.h"
58#include "cvmx-zip.h"
59
60#ifdef CVMX_ENABLE_PKO_FUNCTIONS
61
62/**
63 * Initialize the ZIP block
64 *
65 * @return Zero on success, negative on failure
66 */
67int cvmx_zip_initialize(void)
68{
69    cvmx_zip_cmd_buf_t zip_cmd_buf;
70    cvmx_cmd_queue_result_t result;
71    result = cvmx_cmd_queue_initialize(CVMX_CMD_QUEUE_ZIP, 0,
72                                       CVMX_FPA_OUTPUT_BUFFER_POOL,
73                                       CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE);
74    if (result != CVMX_CMD_QUEUE_SUCCESS)
75        return -1;
76
77    zip_cmd_buf.u64 = 0;
78    zip_cmd_buf.s.dwb = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE/128;
79    zip_cmd_buf.s.pool = CVMX_FPA_OUTPUT_BUFFER_POOL;
80    zip_cmd_buf.s.size = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE/8;
81    zip_cmd_buf.s.ptr =  cvmx_ptr_to_phys(cvmx_cmd_queue_buffer(CVMX_CMD_QUEUE_ZIP))>>7;
82    cvmx_write_csr(CVMX_ZIP_CMD_BUF, zip_cmd_buf.u64);
83    cvmx_write_csr(CVMX_ZIP_ERROR, 1);
84    cvmx_read_csr(CVMX_ZIP_CMD_BUF); /* Read to make sure setup is complete */
85    return 0;
86}
87
88/**
89 * Shutdown the ZIP block. ZIP must be idle when
90 * this function is called.
91 *
92 * @return Zero on success, negative on failure
93 */
94int cvmx_zip_shutdown(void)
95{
96    cvmx_zip_cmd_ctl_t zip_cmd_ctl;
97
98    if (cvmx_cmd_queue_length(CVMX_CMD_QUEUE_ZIP))
99    {
100        cvmx_dprintf("ERROR: cvmx_zip_shutdown: ZIP not idle.\n");
101        return -1;
102    }
103
104    zip_cmd_ctl.u64 = cvmx_read_csr(CVMX_ZIP_CMD_CTL);
105    zip_cmd_ctl.s.reset = 1;
106    cvmx_write_csr(CVMX_ZIP_CMD_CTL, zip_cmd_ctl.u64);
107    cvmx_wait(100);
108
109    cvmx_cmd_queue_shutdown(CVMX_CMD_QUEUE_ZIP);
110    return 0;
111}
112
113/**
114 * Submit a command to the ZIP block
115 *
116 * @param command Zip command to submit
117 *
118 * @return Zero on success, negative on failure
119 */
120int cvmx_zip_submit(cvmx_zip_command_t *command)
121{
122    cvmx_cmd_queue_result_t result = cvmx_cmd_queue_write(CVMX_CMD_QUEUE_ZIP, 1, 8, command->u64);
123    if (result == CVMX_CMD_QUEUE_SUCCESS)
124        cvmx_write_csr(CVMX_ADDR_DID(CVMX_FULL_DID(7, 0)), 8);
125    return result;
126}
127
128#endif
129
130