2 * Private header for the MPC52xx processor BestComm driver
4 * By private, we mean that driver should not use it directly. It's meant
5 * to be used by the BestComm engine driver itself and by the intermediate
6 * layer between the core and the drivers.
8 * Copyright (C) 2006 Sylvain Munaut <tnt@246tNt.com>
9 * Copyright (C) 2005 Varma Electronics Oy,
10 * ( by Andrey Volkov <avolkov@varma-el.com> )
11 * Copyright (C) 2003-2004 MontaVista, Software, Inc.
12 * ( by Dale Farnsworth <dfarnsworth@mvista.com> )
14 * This file is licensed under the terms of the GNU General Public License
15 * version 2. This program is licensed "as is" without any warranty of any
16 * kind, whether express or implied.
19 #ifndef __BESTCOMM_PRIV_H__
20 #define __BESTCOMM_PRIV_H__
22 #include <linux/spinlock.h>
25 #include <asm/mpc52xx.h>
30 /* ======================================================================== */
31 /* Engine related stuff */
32 /* ======================================================================== */
34 /* Zones sizes and needed alignments */
35 #define BCOM_MAX_TASKS 16
36 #define BCOM_MAX_VAR 24
37 #define BCOM_MAX_INC 8
38 #define BCOM_MAX_FDT 64
39 #define BCOM_MAX_CTX 20
40 #define BCOM_CTX_SIZE (BCOM_MAX_CTX * sizeof(u32))
41 #define BCOM_CTX_ALIGN 0x100
42 #define BCOM_VAR_SIZE (BCOM_MAX_VAR * sizeof(u32))
43 #define BCOM_INC_SIZE (BCOM_MAX_INC * sizeof(u32))
44 #define BCOM_VAR_ALIGN 0x80
45 #define BCOM_FDT_SIZE (BCOM_MAX_FDT * sizeof(u32))
46 #define BCOM_FDT_ALIGN 0x100
49 * struct bcom_tdt - Task Descriptor Table Entry
57 u32 exec_status; /* used internally by BestComm engine */
58 u32 mvtp; /* used internally by BestComm engine */
66 * This holds all info needed globaly to handle the engine
69 struct device_node *ofnode;
70 struct mpc52xx_sdma __iomem *regs;
71 phys_addr_t regs_base;
81 extern struct bcom_engine *bcom_eng;
84 /* ======================================================================== */
85 /* Tasks related stuff */
86 /* ======================================================================== */
88 /* Tasks image header */
89 #define BCOM_TASK_MAGIC 0x4243544B /* 'BCTK' */
91 struct bcom_task_header {
93 u8 desc_size; /* the size fields */
94 u8 var_size; /* are given in number */
95 u8 inc_size; /* of 32-bits words */
100 /* Descriptors stucture & co */
101 #define BCOM_DESC_NOP 0x000001f8
102 #define BCOM_LCD_MASK 0x80000000
103 #define BCOM_DRD_EXTENDED 0x40000000
104 #define BCOM_DRD_INITIATOR_SHIFT 21
107 #define BCOM_PRAGMA_BIT_RSV 7 /* reserved pragma bit */
108 #define BCOM_PRAGMA_BIT_PRECISE_INC 6 /* increment 0=when possible, */
110 #define BCOM_PRAGMA_BIT_RST_ERROR_NO 5 /* don't reset errors on */
112 #define BCOM_PRAGMA_BIT_PACK 4 /* pack data enable */
113 #define BCOM_PRAGMA_BIT_INTEGER 3 /* data alignment */
114 /* 0=frac(msb), 1=int(lsb) */
115 #define BCOM_PRAGMA_BIT_SPECREAD 2 /* XLB speculative read */
116 #define BCOM_PRAGMA_BIT_CW 1 /* write line buffer enable */
117 #define BCOM_PRAGMA_BIT_RL 0 /* read line buffer enable */
119 /* Looks like XLB speculative read generates XLB errors when a buffer
120 * is at the end of the physical memory. i.e. when accessing the
121 * lasts words, the engine tries to prefetch the next but there is no
124 #define BCOM_STD_PRAGMA ((0 << BCOM_PRAGMA_BIT_RSV) | \
125 (0 << BCOM_PRAGMA_BIT_PRECISE_INC) | \
126 (0 << BCOM_PRAGMA_BIT_RST_ERROR_NO) | \
127 (0 << BCOM_PRAGMA_BIT_PACK) | \
128 (0 << BCOM_PRAGMA_BIT_INTEGER) | \
129 (0 << BCOM_PRAGMA_BIT_SPECREAD) | \
130 (1 << BCOM_PRAGMA_BIT_CW) | \
131 (1 << BCOM_PRAGMA_BIT_RL))
133 #define BCOM_PCI_PRAGMA ((0 << BCOM_PRAGMA_BIT_RSV) | \
134 (0 << BCOM_PRAGMA_BIT_PRECISE_INC) | \
135 (0 << BCOM_PRAGMA_BIT_RST_ERROR_NO) | \
136 (0 << BCOM_PRAGMA_BIT_PACK) | \
137 (1 << BCOM_PRAGMA_BIT_INTEGER) | \
138 (0 << BCOM_PRAGMA_BIT_SPECREAD) | \
139 (1 << BCOM_PRAGMA_BIT_CW) | \
140 (1 << BCOM_PRAGMA_BIT_RL))
142 #define BCOM_ATA_PRAGMA BCOM_STD_PRAGMA
143 #define BCOM_CRC16_DP_0_PRAGMA BCOM_STD_PRAGMA
144 #define BCOM_CRC16_DP_1_PRAGMA BCOM_STD_PRAGMA
145 #define BCOM_FEC_RX_BD_PRAGMA BCOM_STD_PRAGMA
146 #define BCOM_FEC_TX_BD_PRAGMA BCOM_STD_PRAGMA
147 #define BCOM_GEN_DP_0_PRAGMA BCOM_STD_PRAGMA
148 #define BCOM_GEN_DP_1_PRAGMA BCOM_STD_PRAGMA
149 #define BCOM_GEN_DP_2_PRAGMA BCOM_STD_PRAGMA
150 #define BCOM_GEN_DP_3_PRAGMA BCOM_STD_PRAGMA
151 #define BCOM_GEN_DP_BD_0_PRAGMA BCOM_STD_PRAGMA
152 #define BCOM_GEN_DP_BD_1_PRAGMA BCOM_STD_PRAGMA
153 #define BCOM_GEN_RX_BD_PRAGMA BCOM_STD_PRAGMA
154 #define BCOM_GEN_TX_BD_PRAGMA BCOM_STD_PRAGMA
155 #define BCOM_GEN_LPC_PRAGMA BCOM_STD_PRAGMA
156 #define BCOM_PCI_RX_PRAGMA BCOM_PCI_PRAGMA
157 #define BCOM_PCI_TX_PRAGMA BCOM_PCI_PRAGMA
159 /* Initiators number */
160 #define BCOM_INITIATOR_ALWAYS 0
161 #define BCOM_INITIATOR_SCTMR_0 1
162 #define BCOM_INITIATOR_SCTMR_1 2
163 #define BCOM_INITIATOR_FEC_RX 3
164 #define BCOM_INITIATOR_FEC_TX 4
165 #define BCOM_INITIATOR_ATA_RX 5
166 #define BCOM_INITIATOR_ATA_TX 6
167 #define BCOM_INITIATOR_SCPCI_RX 7
168 #define BCOM_INITIATOR_SCPCI_TX 8
169 #define BCOM_INITIATOR_PSC3_RX 9
170 #define BCOM_INITIATOR_PSC3_TX 10
171 #define BCOM_INITIATOR_PSC2_RX 11
172 #define BCOM_INITIATOR_PSC2_TX 12
173 #define BCOM_INITIATOR_PSC1_RX 13
174 #define BCOM_INITIATOR_PSC1_TX 14
175 #define BCOM_INITIATOR_SCTMR_2 15
176 #define BCOM_INITIATOR_SCLPC 16
177 #define BCOM_INITIATOR_PSC5_RX 17
178 #define BCOM_INITIATOR_PSC5_TX 18
179 #define BCOM_INITIATOR_PSC4_RX 19
180 #define BCOM_INITIATOR_PSC4_TX 20
181 #define BCOM_INITIATOR_I2C2_RX 21
182 #define BCOM_INITIATOR_I2C2_TX 22
183 #define BCOM_INITIATOR_I2C1_RX 23
184 #define BCOM_INITIATOR_I2C1_TX 24
185 #define BCOM_INITIATOR_PSC6_RX 25
186 #define BCOM_INITIATOR_PSC6_TX 26
187 #define BCOM_INITIATOR_IRDA_RX 25
188 #define BCOM_INITIATOR_IRDA_TX 26
189 #define BCOM_INITIATOR_SCTMR_3 27
190 #define BCOM_INITIATOR_SCTMR_4 28
191 #define BCOM_INITIATOR_SCTMR_5 29
192 #define BCOM_INITIATOR_SCTMR_6 30
193 #define BCOM_INITIATOR_SCTMR_7 31
195 /* Initiators priorities */
196 #define BCOM_IPR_ALWAYS 7
197 #define BCOM_IPR_SCTMR_0 2
198 #define BCOM_IPR_SCTMR_1 2
199 #define BCOM_IPR_FEC_RX 6
200 #define BCOM_IPR_FEC_TX 5
201 #define BCOM_IPR_ATA_RX 4
202 #define BCOM_IPR_ATA_TX 3
203 #define BCOM_IPR_SCPCI_RX 2
204 #define BCOM_IPR_SCPCI_TX 2
205 #define BCOM_IPR_PSC3_RX 2
206 #define BCOM_IPR_PSC3_TX 2
207 #define BCOM_IPR_PSC2_RX 2
208 #define BCOM_IPR_PSC2_TX 2
209 #define BCOM_IPR_PSC1_RX 2
210 #define BCOM_IPR_PSC1_TX 2
211 #define BCOM_IPR_SCTMR_2 2
212 #define BCOM_IPR_SCLPC 2
213 #define BCOM_IPR_PSC5_RX 2
214 #define BCOM_IPR_PSC5_TX 2
215 #define BCOM_IPR_PSC4_RX 2
216 #define BCOM_IPR_PSC4_TX 2
217 #define BCOM_IPR_I2C2_RX 2
218 #define BCOM_IPR_I2C2_TX 2
219 #define BCOM_IPR_I2C1_RX 2
220 #define BCOM_IPR_I2C1_TX 2
221 #define BCOM_IPR_PSC6_RX 2
222 #define BCOM_IPR_PSC6_TX 2
223 #define BCOM_IPR_IRDA_RX 2
224 #define BCOM_IPR_IRDA_TX 2
225 #define BCOM_IPR_SCTMR_3 2
226 #define BCOM_IPR_SCTMR_4 2
227 #define BCOM_IPR_SCTMR_5 2
228 #define BCOM_IPR_SCTMR_6 2
229 #define BCOM_IPR_SCTMR_7 2
232 /* ======================================================================== */
234 /* ======================================================================== */
236 extern struct bcom_task *bcom_task_alloc(int bd_count, int bd_size, int priv_size);
237 extern void bcom_task_free(struct bcom_task *tsk);
238 extern int bcom_load_image(int task, u32 *task_image);
239 extern void bcom_set_initiator(int task, int initiator);
242 #define TASK_ENABLE 0x8000
245 bcom_enable_task(int task)
248 reg = in_be16(&bcom_eng->regs->tcr[task]);
249 out_be16(&bcom_eng->regs->tcr[task], reg | TASK_ENABLE);
253 bcom_disable_task(int task)
255 u16 reg = in_be16(&bcom_eng->regs->tcr[task]);
256 out_be16(&bcom_eng->regs->tcr[task], reg & ~TASK_ENABLE);
261 bcom_task_desc(int task)
263 return bcom_sram_pa2va(bcom_eng->tdt[task].start);
267 bcom_task_num_descs(int task)
269 return (bcom_eng->tdt[task].stop - bcom_eng->tdt[task].start)/sizeof(u32) + 1;
273 bcom_task_var(int task)
275 return bcom_sram_pa2va(bcom_eng->tdt[task].var);
279 bcom_task_inc(int task)
281 return &bcom_task_var(task)[BCOM_MAX_VAR];
286 bcom_drd_is_extended(u32 desc)
288 return (desc) & BCOM_DRD_EXTENDED;
292 bcom_desc_is_drd(u32 desc)
294 return !(desc & BCOM_LCD_MASK) && desc != BCOM_DESC_NOP;
298 bcom_desc_initiator(u32 desc)
300 return (desc >> BCOM_DRD_INITIATOR_SHIFT) & 0x1f;
304 bcom_set_desc_initiator(u32 *desc, int initiator)
306 *desc = (*desc & ~(0x1f << BCOM_DRD_INITIATOR_SHIFT)) |
307 ((initiator & 0x1f) << BCOM_DRD_INITIATOR_SHIFT);
312 bcom_set_task_pragma(int task, int pragma)
314 u32 *fdt = &bcom_eng->tdt[task].fdt;
315 *fdt = (*fdt & ~0xff) | pragma;
319 bcom_set_task_auto_start(int task, int next_task)
321 u16 __iomem *tcr = &bcom_eng->regs->tcr[task];
322 out_be16(tcr, (in_be16(tcr) & ~0xff) | 0x00c0 | next_task);
326 bcom_set_tcr_initiator(int task, int initiator)
328 u16 __iomem *tcr = &bcom_eng->regs->tcr[task];
329 out_be16(tcr, (in_be16(tcr) & ~0x1f00) | ((initiator & 0x1f) << 8));
333 #endif /* __BESTCOMM_PRIV_H__ */