2 * Faraday FTIDE020_s ATA Controller (AHB)
4 * (C) Copyright 2011 Andes Technology
5 * Greentime Hu <greentime@andestech.com>
6 * Macpaul Lin <macpaul@andestech.com>
7 * Kuo-Wei Chou <kwchou@andestech.com>
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 /* ftide020.h - ide support functions for the FTIDE020_S controller */
34 /* ATA controller register offset */
36 unsigned int rw_fifo; /* 0x00 - READ/WRITE FIFO */
37 unsigned int cmd_fifo; /* 0x04 - R: Status Reg, W: CMD_FIFO */
38 unsigned int cr; /* 0x08 - Control Reg */
39 unsigned int dmatirr; /* 0x0c - DMA Threshold/Interrupt Reg */
40 unsigned int ctrd0; /* 0x10 - Command Timing Reg Device 0 */
41 unsigned int dtrd0; /* 0x14 - Data Timing Reg Device 0 */
42 unsigned int ctrd1; /* 0x18 - Command Timing Reg Device 1 */
43 unsigned int dtrd1; /* 0x1c - Data Timing Reg Device 1 */
44 unsigned int ahbtr; /* 0x20 - AHB Timeout Reg */
45 unsigned int RESVD0; /* 0x24 */
46 unsigned int RESVD1; /* 0x28 */
47 unsigned int RESVD2; /* 0x2c */
48 unsigned int f_cfifo; /* 0x30 - Feature Info of CMD_FIFO */
49 unsigned int f_wfifo; /* 0x34 - Feature Info of WRITE_FIFO */
50 unsigned int f_rfifo; /* 0x3c - Feature Info of READ_FIFO */
51 unsigned int revision; /* 0x38 - Revision No. of FTIDE020_S */
54 /* reference parameters */
55 #define CONFIG_IDE_REG_CS 0x2 /* ref: ATA spec chaper 10, table 42 */
56 #define CONFIG_CTRD1_PROBE_T1 0x2
57 #define CONFIG_CTRD1_PROBE_T2 0x5
59 /* status register - 0x04 */
60 #define STATUS_CSEL (1 << 0) /* CSEL */
61 #define STATUS_CS(x) (((x) >> 1) & 0x3) /* CS#[1:0] */
62 #define STATUS_DMACK (1 << 3) /* DMACK# */
63 #define STATUS_DMARQ (1 << 4) /* DMA req */
64 #define STATUS_INTRQ (1 << 5) /* INT req */
65 #define STATUS_DIOR (1 << 6) /* DIOR */
66 #define STATUS_IORDY (1 << 7) /* I/O ready */
67 #define STATUS_DIOW (1 << 8) /* DIOW# */
68 #define STATUS_PDIAG (1 << 9) /* PDIAG */
69 #define STATUS_DASP (1 << 10) /* DASP# */
70 #define STATUS_DEV (1 << 11) /* selected device */
71 #define STATUS_PIO (1 << 12) /* PIO in progress */
72 #define STATUS_DMA (1 << 13) /* DMA in progress */
73 #define STATUS_WFE (1 << 14) /* write fifo full */
74 #define STATUS_RFE (1 << 15) /* read fifo empty */
75 #define STATUS_COUNTER(x) (((x) >> 16) & 0x3fff) /* data tx counter */
76 #define STATUS_ERR (1 << 30) /* trasfer terminated */
77 #define STATUS_AER (1 << 31) /* AHB timeout indicate */
79 /* Control register - 0x08 */
80 #define CONTROL_TYPE_PIO 0x0
81 #define CONTROL_TYPE_UDMA 0x1
84 #define CONTROL_TYP0(x) (((x) & 0x7) << 0)
85 #define CONTROL_IRE0 (1 << 3) /* enable IORDY for PIO */
86 #define CONTROL_RESVD_DW0 (1 << 4) /* Reserved - DW0 ? */
87 #define CONTROL_E0 (1 << 5) /* E0: 1: Big Endian */
88 #define CONTROL_RESVD_WP0 (1 << 6) /* Reserved - WP0 ? */
89 #define CONTROL_RESVD_SE0 (1 << 7) /* Reserved - SE0 ? */
90 #define CONTROL_RESVD_ECC0 (1 << 8) /* Reserved - ECC0 ? */
92 #define CONTROL_RAEIE (1 << 9) /* IRQ - read fifo almost full */
93 #define CONTROL_RNEIE (1 << 10) /* IRQ - read fifo not empty */
94 #define CONTROL_WAFIE (1 << 11) /* IRQ - write fifo almost empty */
95 #define CONTROL_WNFIE (1 << 12) /* IRQ - write fifo not full */
96 #define CONTROL_RESVD_FIRQ (1 << 13) /* RESERVED - FIRQ ? */
97 #define CONTROL_AERIE (1 << 14) /* IRQ - AHB timeout error */
98 #define CONTROL_IIE (1 << 15) /* IDE IRQ enable */
101 #define CONTROL_TYP1(x) (((x) & 0x7) << 16)
102 #define CONTROL_IRE1 (1 << 19) /* enable IORDY for PIO */
103 #define CONTROL_RESVD_DW1 (1 << 20) /* Reserved - DW1 ? */
104 #define CONTROL_E1 (1 << 21) /* E1: 1: Big Endian */
105 #define CONTROL_RESVD_WP1 (1 << 22) /* Reserved - WP1 ? */
106 #define CONTROL_RESVD_SE1 (1 << 23) /* Reserved - SE1 ? */
107 #define CONTROL_RESVD_ECC1 (1 << 24) /* Reserved - ECC1 ? */
109 #define CONTROL_DRE (1 << 25) /* DMA receive enable */
110 #define CONTROL_DTE (1 << 26) /* DMA transmit enable */
111 #define CONTRIL_RESVD (1 << 27)
112 #define CONTROL_TERIE (1 << 28) /* transfer terminate error IRQ */
113 #define CONTROL_T (1 << 29) /* terminate current operation */
114 #define CONTROL_SRST (1 << 30) /* IDE soft reset */
115 #define CONTROL_RST (1 << 31) /* IDE hardware reset */
117 /* IRQ register - 0x0c */
118 #define IRQ_RXTHRESH(x) (((x) & 0x3ff) << 0) /* Read FIFO threshold */
119 #define IRQ_RFAEIRQ (1 << 10) /* Read FIFO almost full intr req */
120 #define IRQ_RFNEIRQ (1 << 11) /* Read FIFO not empty intr req */
121 #define IRQ_WFAFIRQ (1 << 12) /* Write FIFO almost empty int req */
122 #define IRQ_WFNFIRQ (1 << 13) /* Write FIFO not full intr req */
123 #define IRQ_RESVD_FIRQ (1 << 14) /* Reserved - FIRQ ? */
124 #define IRQ_IIRQ (1 << 15) /* IDE device interrupt request */
125 #define IRQ_TXTHRESH(x) (((x) & 0x3ff) << 16) /* Write FIFO thershold */
126 #define IRQ_TERMERR (1 << 28) /* Transfer termination indication */
127 #define IRQ_AHBERR (1 << 29) /* AHB Timeout indication */
129 /* Command Timing Register 0-1: ctrd (0x10, 0x18) */
130 #define CT_REG_T1(x) (((x) & 0xff) << 0) /* setup time of addressed */
131 #define CT_REG_T2(x) (((x) & 0xff) << 8) /* pluse width of DIOR/DIOW */
132 #define CT_REG_T4(x) (((x) & 0xff) << 16) /* data hold time */
133 #define CT_REG_TEOC(x) (((x) & 0xff) << 24) /* time to the end of a cycle */
135 /* Data Timing Register 0-1: dtrd (0x14, 0x1c) */
138 * b(0:7) DT_REG_PIO_T1: the setup time of addressed
139 * b(8:15) DT_REG_PIO_T2: the pluse width of DIOR/DIOW
140 * b(16:23) DT_REG_PIO_T4: data hold time
141 * b(24:31) DT_REG_PIO_TEOC: the time to the end of a cycle
143 #define DT_REG_PIO_T1(x) (((x) & 0xff) << 0)
144 #define DT_REG_PIO_T2(x) (((x) & 0xff) << 8)
145 #define DT_REG_PIO_T4(x) (((x) & 0xff) << 16)
146 #define DT_REG_PIO_TEOC(x) (((x) & 0xff) << 24)
150 * b(0:3) DT_REG_UDMA_TENV: the envelope time
151 * b(4:7) DT_REG_UDMA_TMLI: interlock time
152 * b(8:15) DT_REG_UDMA_TCYC: cycle time - data time
153 * b(16:19) DT_REG_UDMA_TACK: setup and hold time of DMACK
154 * b(23:30) DT_REG_UDMA_TCVS: setup time of CRC
155 * b(24:31) DT_REG_UDMA_TRP: time to ready to pause
157 #define DT_REG_UDMA_TENV(x) (((x) & 0xf) << 0)
158 #define DT_REG_UDMA_TMLI(x) (((x) & 0xf) << 4)
159 #define DT_REG_UDMA_TCYC(x) (((x) & 0xff) << 8)
160 #define DT_REG_UDMA_TACK(x) (((x) & 0xf) << 16)
161 #define DT_REG_UDMA_TCVS(x) (((x) & 0xf) << 20)
162 #define DT_REG_UDMA_TRP(x) (((x) & 0xff) << 24)
164 /* ftide020_s command formats */
165 /* read: IDE Register (CF1) */
166 #define IDE_REG_OPCODE_READ (1 << 13) /* 0x2000 */
167 #define IDE_REG_CS_READ(x) (((x) & 0x3) << 11)
168 #define IDE_REG_DA_READ(x) (((x) & 0x7) << 8)
169 #define IDE_REG_CMD_READ(x) 0x0 /* fixed value */
171 /* write: IDE Register (CF2) */
172 #define IDE_REG_OPCODE_WRITE (0x5 << 13) /* 0xA000 */
173 #define IDE_REG_CS_WRITE(x) (((x) & 0x3) << 11)
174 #define IDE_REG_DA_WRITE(x) (((x) & 0x7) << 8)
175 /* b(0:7) IDE_REG_CMD_WRITE(x): Actual ATA command or data */
176 #define IDE_REG_CMD_WRITE(x) (((x) & 0xff) << 0)
178 /* read/write data: PIO/UDMA (CF3) */
179 #define IDE_DATA_WRITE (1 << 15) /* read: 0, write: 1 */
180 #define IDE_DATA_OPCODE (0x2 << 13) /* device data access opcode */
181 /* b(0:12) IDE_DATA_COUNTER(x): Number of transfers minus 1 */
182 #define IDE_DATA_COUNTER(x) (((x) & 0x1fff) << 0)
184 /* set device: (CF4) */
185 #define IDE_SET_OPCODE (0x2740 << 2) /* [15:2], 0x9d00 */
186 /* CF3 counter value: 0: Tx in bytes, 1: in blocks (each block is 8 bytes) */
187 #define IDE_SET_CX8(x) (((x) & 0x1) << 1)
188 #define IDE_SET_DEV(x) (((x) & 0x1) << 0) /* 0: Master, 1: Slave */
191 * IDE command bit definition
192 * This section is designed for minor hardware revision compatibility.
194 #define READ_REG_CMD IDE_REG_OPCODE_READ /* 0x2000 */
195 #define WRITE_REG_CMD IDE_REG_OPCODE_WRITE /* 0xA000 */
196 #define READ_DATA_CMD IDE_DATA_OPCODE /* 0x4000 */
197 #define WRITE_DATA_CMD (IDE_DATA_OPCODE | IDE_DATA_WRITE) /* 0xC000 */
198 #define SET_DEV_CMD IDE_SET_OPCODE /* 0x9D00 */
200 #define TATOL_TIMING 3
205 /* Timing Parameters */
206 /* Register Access Timing Parameters */
207 #define REG_PARAMETER 4
220 /* PIO Access Timing Parameters */
221 #define PIO_PARAMETER 4
234 /* UDMA Access Timing Parameters */
235 #define UDMA_PARAMETER 6
254 * hardware limitation: max = 8, should support 1,4,8,16,32,64,128,256
257 #define WRITE_FIFO 32 /* Hardwired value */
260 unsigned int REG_ACCESS_TIMING[REG_PARAMETER][REG_MODE] = {
261 {600, 383, 330, 180, 120},
262 {70, 50, 30, 30, 25},
263 {290, 290, 290, 80, 70},
264 {30, 20, 15, 10, 10},
267 unsigned int PIO_ACCESS_TIMING[PIO_PARAMETER][PIO_MODE] = {
268 {600, 383, 240, 180, 120},
269 {70, 50, 30, 30, 25},
270 {165, 125, 100, 80, 70},
271 {30, 20, 15, 10, 10},
274 unsigned int UDMA_ACCESS_TIMING[UDMA_PARAMETER][UDMA_MODE] = {
275 {1120, 730, 540, 390, 250, 168, 130}, /* 10X */
276 {700, 480, 310, 200, 67, 100, 100}, /* 10X */
277 {200, 200, 200, 200, 200, 200, 200}, /* 10X */
278 {200, 200, 200, 200, 200, 200, 200}, /* 10X */
279 {1600, 1250, 1000, 1000, 1000, 850, 850}, /* 10X */
280 {200, 200, 200, 200, 200, 200, 200}, /* 10X */
283 #endif /* __FTIDE020_H */