cvmx-csr-db-support.c revision 225736 
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39
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44
45
46/**
47 * @file
48 *
49 * Utility functions for working with the CSR database
50 *
51 * <hr>$Revision: 49507 $<hr>
52 */
53#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
54#define PRINTF printk
55#include <asm/octeon/cvmx.h>
56#include <asm/octeon/cvmx-csr-db.h>
57#else
58#define PRINTF printf
59#include "cvmx.h"
60#include "cvmx-csr-db.h"
61#endif
62
63/**
64 * Figure out which database to use for this chip. The passed
65 * identifier can be a processor ID or a PCI ID.
66 *
67 * @param identifier processor ID or a PCI ID
68 *
69 * @return index into the csr db
70 */
71int cvmx_db_get_chipindex(int identifier)
72{
73    /* First try and see if the identifier is a Processor ID */
74    switch (identifier & 0xffff00)
75    {
76        case 0x000d0600: /* CN50XX */
77            return 8;
78        case 0x000d0400: /* CN56XX */
79            return 7;
80        case 0x000d0300: /* CN58XX */
81            return 5;
82        case 0x000d0000: /* CN38XX */
83            return 3;
84        case 0x000d0100: /* CN31XX */
85            return 1;
86        case 0x000d0200: /* CN3010 */
87            return 2;
88        case 0x000d0700: /* CN52XX */
89            return 10;
90        case 0x000d9000: /* CN63XX */
91            return 11;
92    }
93
94    /* Next try PCI device IDs */
95    switch (identifier)
96    {
97        case 0x0003177d: /* CN38XX Pass 1 */
98            return 0;
99        case 0x0004177d: /* CN38XX Pass 2 */
100            return 0;
101        case 0x0005177d: /* CN38XX Pass 3 */
102            return 3;
103        case 0x1001177d: /* Thunder */
104            return 3;
105        case 0x0020177d: /* CN31XX Pass 1 */
106            return 1;
107        case 0x0030177d: /* CN30XX Pass 1 */
108            return 2;
109        case 0x0040177d: /* CN58XX Pass 2 */
110            return 5;
111        case 0x0050177d: /* CN56XX Pass 2 */
112            return 7;
113        case 0x0070177d: /* CN50XX Pass 1 */
114            return 8;
115        case 0x0080177d: /* CN52XX Pass 2 */
116            return 10;
117        case 0x0090177d: /* CN63XX Pass 1 */
118            return 11;
119    }
120
121    /* Default to Pass 3 if we don't know */
122    return 3;
123}
124
125
126#ifndef CVMX_BUILD_FOR_LINUX_KERNEL
127/**
128 * Get the CSR DB entry for the passed Octeon model and CSR name. The
129 * model can either be specified as a processor id or PCI id.
130 *
131 * @param identifier Identifer to choose the CSR DB with
132 * @param name       CSR name to lookup
133 *
134 * @return CSR DB entry or NULL on failure
135 */
136const CVMX_CSR_DB_ADDRESS_TYPE *cvmx_csr_db_get(int identifier, const char *name)
137{
138    int chip = cvmx_db_get_chipindex(identifier);
139    int i=0;
140    if (strncasecmp(name, "CVMX_", 5) == 0)
141        name += 5;
142    while (cvmx_csr_db_addresses[chip][i].name)
143    {
144        if (strcasecmp(name, cvmx_csr_db_addresses[chip][i].name) == 0)
145            return &(cvmx_csr_db_addresses[chip][i]);
146        i++;
147    }
148    return NULL;
149}
150#endif
151
152static void __cvmx_csr_db_decode_csr(int chip, int index, uint64_t value)
153{
154    int field;
155    int csr = cvmx_csr_db_addresses[chip][index].csroff;
156    PRINTF("%s(0x%016llx) = 0x%016llx\n", cvmx_csr_db_addresses[chip][index].name, (unsigned long long)cvmx_csr_db_addresses[chip][index].address, (unsigned long long)value);
157    for (field=cvmx_csr_db[chip][csr].fieldoff+cvmx_csr_db[chip][csr].numfields-1; field>=cvmx_csr_db[chip][csr].fieldoff; field--)
158    {
159        uint64_t v = (value >> cvmx_csr_db_fields[chip][field].startbit);
160        if(cvmx_csr_db_fields[chip][field].sizebits < 64)
161            v = v & ~((~0x0ull) << cvmx_csr_db_fields[chip][field].sizebits);
162        if (cvmx_csr_db_fields[chip][field].sizebits == 1)
163            PRINTF("  [   %2d] %-20s = %10llu (0x%llx)\n",
164                cvmx_csr_db_fields[chip][field].startbit, cvmx_csr_db_fields[chip][field].name,
165                (unsigned long long)v, (unsigned long long)v);
166        else
167            PRINTF("  [%2d:%2d] %-20s = %10llu (0x%llx)\n",
168                cvmx_csr_db_fields[chip][field].startbit + cvmx_csr_db_fields[chip][field].sizebits - 1,
169                cvmx_csr_db_fields[chip][field].startbit,
170                cvmx_csr_db_fields[chip][field].name,
171                (unsigned long long)v, (unsigned long long)v);
172    }
173}
174
175/**
176 * Decode a CSR value into named bitfields. The model can either
177 * be specified as a processor id or PCI id.
178 *
179 * @param identifier Identifer to choose the CSR DB with
180 * @param address    CSR address being decoded
181 * @param value      Value to decode
182 */
183void cvmx_csr_db_decode(int identifier, uint64_t address, uint64_t value)
184{
185    int chip = cvmx_db_get_chipindex(identifier);
186    int index=0;
187    /* Strip off the upper 8 bits since they are normally mips addressing
188        modes */
189    address &= (1ull<<56)-1;
190    while (cvmx_csr_db_addresses[chip][index].name)
191    {
192        if (cvmx_csr_db_addresses[chip][index].address == address)
193            __cvmx_csr_db_decode_csr(chip, index, value);
194        index++;
195    }
196}
197
198/**
199 * Decode a CSR value into named bitfields. The model can either
200 * be specified as a processor id or PCI id.
201 *
202 * @param identifier Identifer to choose the CSR DB with
203 * @param name       CSR name to decode
204 * @param value      Value to decode
205 */
206void cvmx_csr_db_decode_by_name(int identifier, const char *name, uint64_t value)
207{
208    int chip = cvmx_db_get_chipindex(identifier);
209    int index=0;
210    while (cvmx_csr_db_addresses[chip][index].name)
211    {
212        if (strcasecmp(name, cvmx_csr_db_addresses[chip][index].name) == 0)
213        {
214            __cvmx_csr_db_decode_csr(chip, index, value);
215            break;
216        }
217        index++;
218    }
219}
220
221
222#ifndef CVMX_BUILD_FOR_LINUX_KERNEL
223/**
224 * Print a list of csrs begimning with a prefix. The
225 * model can either be specified as a processor id or PCI id.
226 *
227 * @param identifier Identifer to choose the CSR DB with
228 * @param prefix     Beginning prefix to look for
229 */
230void cvmx_csr_db_display_list(int identifier, const char *prefix)
231{
232    int i, len;
233    int chip = cvmx_db_get_chipindex(identifier);
234    if (prefix == NULL)
235        prefix = "";
236    if (strncasecmp(prefix, "CVMX_", 5) == 0)
237        prefix += 5;
238    len = strlen(prefix);
239
240    i=0;
241    while (cvmx_csr_db_addresses[chip][i].name)
242    {
243        if (strncasecmp(prefix, cvmx_csr_db_addresses[chip][i].name, len) == 0)
244            PRINTF("%s\n", cvmx_csr_db_addresses[chip][i].name);
245        i++;
246    }
247}
248#endif
249