1 /*****************************************************************************
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 * XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"
11 * AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND
12 * SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE,
13 * OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,
14 * APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION
15 * THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,
16 * AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE
17 * FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY
18 * WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE
19 * IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR
20 * REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF
21 * INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE.
24 * (c) Copyright 2003-2007 Xilinx Inc.
25 * All rights reserved.
27 * You should have received a copy of the GNU General Public License along
28 * with this program; if not, write to the Free Software Foundation, Inc.,
29 * 675 Mass Ave, Cambridge, MA 02139, USA.
31 *****************************************************************************/
33 #ifndef XILINX_HWICAP_H_ /* prevent circular inclusions */
34 #define XILINX_HWICAP_H_ /* by using protection macros */
36 #include <linux/types.h>
37 #include <linux/cdev.h>
38 #include <linux/platform_device.h>
42 struct hwicap_drvdata {
43 u32 write_buffer_in_use; /* Always in [0,3] */
45 u32 read_buffer_in_use; /* Always in [0,3] */
47 resource_size_t mem_start;/* phys. address of the control registers */
48 resource_size_t mem_end; /* phys. address of the control registers */
49 resource_size_t mem_size;
50 void __iomem *base_address;/* virt. address of the control registers */
53 struct cdev cdev; /* Char device structure */
56 const struct hwicap_driver_config *config;
57 const struct config_registers *config_regs;
63 struct hwicap_driver_config {
64 /* Read configuration data given by size into the data buffer.
65 Return 0 if successful. */
66 int (*get_configuration)(struct hwicap_drvdata *drvdata, u32 *data,
68 /* Write configuration data given by size from the data buffer.
69 Return 0 if successful. */
70 int (*set_configuration)(struct hwicap_drvdata *drvdata, u32 *data,
72 /* Get the status register, bit pattern given by:
73 * D8 - 0 = configuration error
74 * D7 - 1 = alignment found
75 * D6 - 1 = readback in progress
76 * D5 - 0 = abort in progress
81 * D0 - 1 = operation completed
83 u32 (*get_status)(struct hwicap_drvdata *drvdata);
85 void (*reset)(struct hwicap_drvdata *drvdata);
88 /* Number of times to poll the done regsiter */
89 #define XHI_MAX_RETRIES 10
91 /************ Constant Definitions *************/
93 #define XHI_PAD_FRAMES 0x1
95 /* Mask for calculating configuration packet headers */
96 #define XHI_WORD_COUNT_MASK_TYPE_1 0x7FFUL
97 #define XHI_WORD_COUNT_MASK_TYPE_2 0x1FFFFFUL
98 #define XHI_TYPE_MASK 0x7
99 #define XHI_REGISTER_MASK 0xF
100 #define XHI_OP_MASK 0x3
102 #define XHI_TYPE_SHIFT 29
103 #define XHI_REGISTER_SHIFT 13
104 #define XHI_OP_SHIFT 27
108 #define XHI_OP_WRITE 2
109 #define XHI_OP_READ 1
111 /* Address Block Types */
112 #define XHI_FAR_CLB_BLOCK 0
113 #define XHI_FAR_BRAM_BLOCK 1
114 #define XHI_FAR_BRAM_INT_BLOCK 2
116 struct config_registers {
141 /* Configuration Commands */
142 #define XHI_CMD_NULL 0
143 #define XHI_CMD_WCFG 1
144 #define XHI_CMD_MFW 2
145 #define XHI_CMD_DGHIGH 3
146 #define XHI_CMD_RCFG 4
147 #define XHI_CMD_START 5
148 #define XHI_CMD_RCAP 6
149 #define XHI_CMD_RCRC 7
150 #define XHI_CMD_AGHIGH 8
151 #define XHI_CMD_SWITCH 9
152 #define XHI_CMD_GRESTORE 10
153 #define XHI_CMD_SHUTDOWN 11
154 #define XHI_CMD_GCAPTURE 12
155 #define XHI_CMD_DESYNCH 13
156 #define XHI_CMD_IPROG 15 /* Only in Virtex5 */
157 #define XHI_CMD_CRCC 16 /* Only in Virtex5 */
158 #define XHI_CMD_LTIMER 17 /* Only in Virtex5 */
160 /* Packet constants */
161 #define XHI_SYNC_PACKET 0xAA995566UL
162 #define XHI_DUMMY_PACKET 0xFFFFFFFFUL
163 #define XHI_NOOP_PACKET (XHI_TYPE_1 << XHI_TYPE_SHIFT)
164 #define XHI_TYPE_2_READ ((XHI_TYPE_2 << XHI_TYPE_SHIFT) | \
165 (XHI_OP_READ << XHI_OP_SHIFT))
167 #define XHI_TYPE_2_WRITE ((XHI_TYPE_2 << XHI_TYPE_SHIFT) | \
168 (XHI_OP_WRITE << XHI_OP_SHIFT))
170 #define XHI_TYPE2_CNT_MASK 0x07FFFFFF
172 #define XHI_TYPE_1_PACKET_MAX_WORDS 2047UL
173 #define XHI_TYPE_1_HEADER_BYTES 4
174 #define XHI_TYPE_2_HEADER_BYTES 8
176 /* Constant to use for CRC check when CRC has been disabled */
177 #define XHI_DISABLED_AUTO_CRC 0x0000DEFCUL
179 /* Meanings of the bits returned by get_status */
180 #define XHI_SR_CFGERR_N_MASK 0x00000100 /* Config Error Mask */
181 #define XHI_SR_DALIGN_MASK 0x00000080 /* Data Alignment Mask */
182 #define XHI_SR_RIP_MASK 0x00000040 /* Read back Mask */
183 #define XHI_SR_IN_ABORT_N_MASK 0x00000020 /* Select Map Abort Mask */
184 #define XHI_SR_DONE_MASK 0x00000001 /* Done bit Mask */
187 * hwicap_type_1_read - Generates a Type 1 read packet header.
188 * @reg: is the address of the register to be read back.
190 * Generates a Type 1 read packet header, which is used to indirectly
191 * read registers in the configuration logic. This packet must then
192 * be sent through the icap device, and a return packet received with
195 static inline u32 hwicap_type_1_read(u32 reg)
197 return (XHI_TYPE_1 << XHI_TYPE_SHIFT) |
198 (reg << XHI_REGISTER_SHIFT) |
199 (XHI_OP_READ << XHI_OP_SHIFT);
203 * hwicap_type_1_write - Generates a Type 1 write packet header
204 * @reg: is the address of the register to be read back.
206 static inline u32 hwicap_type_1_write(u32 reg)
208 return (XHI_TYPE_1 << XHI_TYPE_SHIFT) |
209 (reg << XHI_REGISTER_SHIFT) |
210 (XHI_OP_WRITE << XHI_OP_SHIFT);