1/***********************license start***************
2 * Copyright (c) 2011  Cavium Inc. (support@cavium.com). All rights
3 * reserved.
4 *
5 *
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11 *     notice, this list of conditions and the following disclaimer.
12 *
13 *   * Redistributions in binary form must reproduce the above
14 *     copyright notice, this list of conditions and the following
15 *     disclaimer in the documentation and/or other materials provided
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17
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23 * This Software, including technical data, may be subject to U.S. export  control
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28 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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37 * PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
38 ***********************license end**************************************/
39
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44
45
46/**
47 * @file
48 *
49 * Support library for the CN63XX, CN68XX hardware HFA engine.
50 *
51 */
52#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
53#include <asm/octeon/cvmx.h>
54#include <asm/octeon/cvmx-config.h>
55#include <asm/octeon/cvmx-pko.h>
56#include <asm/octeon/cvmx-helper.h>
57#include <asm/octeon/cvmx-clock.h>
58#include <asm/octeon/cvmx-dfa-defs.h>
59#include <asm/octeon/cvmx-hfa.h>
60#else
61#include "executive-config.h"
62#ifdef CVMX_ENABLE_DFA_FUNCTIONS
63
64#include "cvmx-config.h"
65#include "cvmx.h"
66#include "cvmx-fau.h"
67#include "cvmx-cmd-queue.h"
68#include "cvmx-hfa.h"
69#endif
70#endif
71
72#ifdef CVMX_ENABLE_DFA_FUNCTIONS
73
74/**
75 * Initialize the DFA block
76 *
77 * @return Zero on success, negative on failure
78 */
79int cvmx_hfa_initialize(void)
80{
81    cvmx_dfa_difctl_t control;
82    cvmx_cmd_queue_result_t result;
83    void *initial_base_address;
84    int cmdsize;
85
86    cmdsize = ((CVMX_FPA_DFA_POOL_SIZE - 8) / sizeof (cvmx_dfa_command_t)) *
87        sizeof (cvmx_dfa_command_t);
88    result = cvmx_cmd_queue_initialize(CVMX_CMD_QUEUE_DFA, 0,
89                                       CVMX_FPA_DFA_POOL, cmdsize + 8);
90    if (result != CVMX_CMD_QUEUE_SUCCESS)
91        return -1;
92
93    control.u64 = 0;
94    control.s.dwbcnt = CVMX_FPA_DFA_POOL_SIZE / 128;
95    control.s.pool = CVMX_FPA_DFA_POOL;
96    control.s.size = cmdsize / sizeof(cvmx_dfa_command_t);
97    CVMX_SYNCWS;
98    cvmx_write_csr(CVMX_DFA_DIFCTL, control.u64);
99    initial_base_address = cvmx_cmd_queue_buffer(CVMX_CMD_QUEUE_DFA);
100    CVMX_SYNCWS;
101    cvmx_write_csr(CVMX_DFA_DIFRDPTR, cvmx_ptr_to_phys(initial_base_address));
102    cvmx_read_csr(CVMX_DFA_DIFRDPTR); /* Read to make sure setup is complete */
103    return 0;
104}
105#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
106EXPORT_SYMBOL(cvmx_hfa_initialize);
107#endif
108
109/**
110 * Shutdown the DFA block. DFA must be idle when
111 * this function is called.
112 *
113 * @return Zero on success, negative on failure
114 */
115int cvmx_hfa_shutdown(void)
116{
117    if (cvmx_cmd_queue_length(CVMX_CMD_QUEUE_DFA))
118    {
119        cvmx_dprintf("ERROR: cvmx_hfa_shutdown: DFA not idle.\n");
120        return -1;
121    }
122    cvmx_cmd_queue_shutdown(CVMX_CMD_QUEUE_DFA);
123    return 0;
124}
125#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
126EXPORT_SYMBOL(cvmx_hfa_shutdown);
127#endif
128
129/**
130 * Submit a command to the DFA block
131 *
132 * @param command DFA command to submit
133 *
134 * @return Zero on success, negative on failure
135 */
136int cvmx_hfa_submit(cvmx_dfa_command_t *command)
137{
138    cvmx_cmd_queue_result_t result = cvmx_cmd_queue_write(CVMX_CMD_QUEUE_DFA, 1, 4, command->u64);
139    if (result == CVMX_CMD_QUEUE_SUCCESS)
140        cvmx_write_csr(CVMX_DFA_DBELL, 1);
141    return result;
142}
143#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
144EXPORT_SYMBOL(cvmx_hfa_submit);
145#endif
146
147void *hfa_bootmem_alloc (uint64_t size, uint64_t alignment)
148{
149    int64_t address;
150
151    address = cvmx_bootmem_phy_alloc(size, 0, 0, alignment, 0);
152
153    if (address > 0)
154        return cvmx_phys_to_ptr(address);
155    else
156        return NULL;
157}
158
159#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
160EXPORT_SYMBOL(hfa_bootmem_alloc);
161#endif
162
163int  hfa_bootmem_free (void *ptr, uint64_t size)
164{
165	uint64_t address;
166	address = cvmx_ptr_to_phys (ptr);
167	return __cvmx_bootmem_phy_free (address, size, 0);
168}
169
170#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
171EXPORT_SYMBOL(hfa_bootmem_free);
172#endif
173
174#endif
175