1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*******************************************************************************
3   Copyright (C) 2007-2009  STMicroelectronics Ltd
4 
5 
6   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
7 *******************************************************************************/
8 #ifndef __DWMAC1000_H__
9 #define __DWMAC1000_H__
10 
11 #include <linux/phy.h>
12 #include "common.h"
13 
14 #define GMAC_CONTROL		0x00000000	/* Configuration */
15 #define GMAC_FRAME_FILTER	0x00000004	/* Frame Filter */
16 #define GMAC_HASH_HIGH		0x00000008	/* Multicast Hash Table High */
17 #define GMAC_HASH_LOW		0x0000000c	/* Multicast Hash Table Low */
18 #define GMAC_MII_ADDR		0x00000010	/* MII Address */
19 #define GMAC_MII_DATA		0x00000014	/* MII Data */
20 #define GMAC_FLOW_CTRL		0x00000018	/* Flow Control */
21 #define GMAC_VLAN_TAG		0x0000001c	/* VLAN Tag */
22 #define GMAC_DEBUG		0x00000024	/* GMAC debug register */
23 #define GMAC_WAKEUP_FILTER	0x00000028	/* Wake-up Frame Filter */
24 
25 #define GMAC_INT_STATUS		0x00000038	/* interrupt status register */
26 #define GMAC_INT_STATUS_PMT	BIT(3)
27 #define GMAC_INT_STATUS_MMCIS	BIT(4)
28 #define GMAC_INT_STATUS_MMCRIS	BIT(5)
29 #define GMAC_INT_STATUS_MMCTIS	BIT(6)
30 #define GMAC_INT_STATUS_MMCCSUM	BIT(7)
31 #define GMAC_INT_STATUS_TSTAMP	BIT(9)
32 #define GMAC_INT_STATUS_LPIIS	BIT(10)
33 
34 /* interrupt mask register */
35 #define	GMAC_INT_MASK		0x0000003c
36 #define	GMAC_INT_DISABLE_RGMII		BIT(0)
37 #define	GMAC_INT_DISABLE_PCSLINK	BIT(1)
38 #define	GMAC_INT_DISABLE_PCSAN		BIT(2)
39 #define	GMAC_INT_DISABLE_PMT		BIT(3)
40 #define	GMAC_INT_DISABLE_TIMESTAMP	BIT(9)
41 #define	GMAC_INT_DISABLE_PCS	(GMAC_INT_DISABLE_RGMII | \
42 				 GMAC_INT_DISABLE_PCSLINK | \
43 				 GMAC_INT_DISABLE_PCSAN)
44 #define	GMAC_INT_DEFAULT_MASK	(GMAC_INT_DISABLE_TIMESTAMP | \
45 				 GMAC_INT_DISABLE_PCS)
46 
47 /* PMT Control and Status */
48 #define GMAC_PMT		0x0000002c
49 enum power_event {
50 	pointer_reset = 0x80000000,
51 	global_unicast = 0x00000200,
52 	wake_up_rx_frame = 0x00000040,
53 	magic_frame = 0x00000020,
54 	wake_up_frame_en = 0x00000004,
55 	magic_pkt_en = 0x00000002,
56 	power_down = 0x00000001,
57 };
58 
59 /* Energy Efficient Ethernet (EEE)
60  *
61  * LPI status, timer and control register offset
62  */
63 #define LPI_CTRL_STATUS	0x0030
64 #define LPI_TIMER_CTRL	0x0034
65 
66 /* LPI control and status defines */
67 #define LPI_CTRL_STATUS_LPITXA	0x00080000	/* Enable LPI TX Automate */
68 #define LPI_CTRL_STATUS_PLSEN	0x00040000	/* Enable PHY Link Status */
69 #define LPI_CTRL_STATUS_PLS	0x00020000	/* PHY Link Status */
70 #define LPI_CTRL_STATUS_LPIEN	0x00010000	/* LPI Enable */
71 #define LPI_CTRL_STATUS_RLPIST	0x00000200	/* Receive LPI state */
72 #define LPI_CTRL_STATUS_TLPIST	0x00000100	/* Transmit LPI state */
73 #define LPI_CTRL_STATUS_RLPIEX	0x00000008	/* Receive LPI Exit */
74 #define LPI_CTRL_STATUS_RLPIEN	0x00000004	/* Receive LPI Entry */
75 #define LPI_CTRL_STATUS_TLPIEX	0x00000002	/* Transmit LPI Exit */
76 #define LPI_CTRL_STATUS_TLPIEN	0x00000001	/* Transmit LPI Entry */
77 
78 /* GMAC HW ADDR regs */
79 #define GMAC_ADDR_HIGH(reg)	(((reg > 15) ? 0x00000800 : 0x00000040) + \
80 				(reg * 8))
81 #define GMAC_ADDR_LOW(reg)	(((reg > 15) ? 0x00000804 : 0x00000044) + \
82 				(reg * 8))
83 #define GMAC_MAX_PERFECT_ADDRESSES	1
84 
85 #define GMAC_PCS_BASE		0x000000c0	/* PCS register base */
86 #define GMAC_RGSMIIIS		0x000000d8	/* RGMII/SMII status */
87 
88 /* SGMII/RGMII status register */
89 #define GMAC_RGSMIIIS_LNKMODE		BIT(0)
90 #define GMAC_RGSMIIIS_SPEED		GENMASK(2, 1)
91 #define GMAC_RGSMIIIS_SPEED_SHIFT	1
92 #define GMAC_RGSMIIIS_LNKSTS		BIT(3)
93 #define GMAC_RGSMIIIS_JABTO		BIT(4)
94 #define GMAC_RGSMIIIS_FALSECARDET	BIT(5)
95 #define GMAC_RGSMIIIS_SMIDRXS		BIT(16)
96 /* LNKMOD */
97 #define GMAC_RGSMIIIS_LNKMOD_MASK	0x1
98 /* LNKSPEED */
99 #define GMAC_RGSMIIIS_SPEED_125		0x2
100 #define GMAC_RGSMIIIS_SPEED_25		0x1
101 #define GMAC_RGSMIIIS_SPEED_2_5		0x0
102 
103 /* GMAC Configuration defines */
104 #define GMAC_CONTROL_2K 0x08000000	/* IEEE 802.3as 2K packets */
105 #define GMAC_CONTROL_TC	0x01000000	/* Transmit Conf. in RGMII/SGMII */
106 #define GMAC_CONTROL_WD	0x00800000	/* Disable Watchdog on receive */
107 #define GMAC_CONTROL_JD	0x00400000	/* Jabber disable */
108 #define GMAC_CONTROL_BE	0x00200000	/* Frame Burst Enable */
109 #define GMAC_CONTROL_JE	0x00100000	/* Jumbo frame */
110 enum inter_frame_gap {
111 	GMAC_CONTROL_IFG_88 = 0x00040000,
112 	GMAC_CONTROL_IFG_80 = 0x00020000,
113 	GMAC_CONTROL_IFG_40 = 0x000e0000,
114 };
115 #define GMAC_CONTROL_DCRS	0x00010000	/* Disable carrier sense */
116 #define GMAC_CONTROL_PS		0x00008000	/* Port Select 0:GMI 1:MII */
117 #define GMAC_CONTROL_FES	0x00004000	/* Speed 0:10 1:100 */
118 #define GMAC_CONTROL_DO		0x00002000	/* Disable Rx Own */
119 #define GMAC_CONTROL_LM		0x00001000	/* Loop-back mode */
120 #define GMAC_CONTROL_DM		0x00000800	/* Duplex Mode */
121 #define GMAC_CONTROL_IPC	0x00000400	/* Checksum Offload */
122 #define GMAC_CONTROL_DR		0x00000200	/* Disable Retry */
123 #define GMAC_CONTROL_LUD	0x00000100	/* Link up/down */
124 #define GMAC_CONTROL_ACS	0x00000080	/* Auto Pad/FCS Stripping */
125 #define GMAC_CONTROL_DC		0x00000010	/* Deferral Check */
126 #define GMAC_CONTROL_TE		0x00000008	/* Transmitter Enable */
127 #define GMAC_CONTROL_RE		0x00000004	/* Receiver Enable */
128 
129 #define GMAC_CORE_INIT (GMAC_CONTROL_JD | GMAC_CONTROL_PS | GMAC_CONTROL_ACS | \
130 			GMAC_CONTROL_BE | GMAC_CONTROL_DCRS)
131 
132 /* GMAC Frame Filter defines */
133 #define GMAC_FRAME_FILTER_PR	0x00000001	/* Promiscuous Mode */
134 #define GMAC_FRAME_FILTER_HUC	0x00000002	/* Hash Unicast */
135 #define GMAC_FRAME_FILTER_HMC	0x00000004	/* Hash Multicast */
136 #define GMAC_FRAME_FILTER_DAIF	0x00000008	/* DA Inverse Filtering */
137 #define GMAC_FRAME_FILTER_PM	0x00000010	/* Pass all multicast */
138 #define GMAC_FRAME_FILTER_DBF	0x00000020	/* Disable Broadcast frames */
139 #define GMAC_FRAME_FILTER_PCF	0x00000080	/* Pass Control frames */
140 #define GMAC_FRAME_FILTER_SAIF	0x00000100	/* Inverse Filtering */
141 #define GMAC_FRAME_FILTER_SAF	0x00000200	/* Source Address Filter */
142 #define GMAC_FRAME_FILTER_HPF	0x00000400	/* Hash or perfect Filter */
143 #define GMAC_FRAME_FILTER_RA	0x80000000	/* Receive all mode */
144 /* GMII ADDR  defines */
145 #define GMAC_MII_ADDR_WRITE	0x00000002	/* MII Write */
146 #define GMAC_MII_ADDR_BUSY	0x00000001	/* MII Busy */
147 /* GMAC FLOW CTRL defines */
148 #define GMAC_FLOW_CTRL_PT_MASK	0xffff0000	/* Pause Time Mask */
149 #define GMAC_FLOW_CTRL_PT_SHIFT	16
150 #define GMAC_FLOW_CTRL_UP	0x00000008	/* Unicast pause frame enable */
151 #define GMAC_FLOW_CTRL_RFE	0x00000004	/* Rx Flow Control Enable */
152 #define GMAC_FLOW_CTRL_TFE	0x00000002	/* Tx Flow Control Enable */
153 #define GMAC_FLOW_CTRL_FCB_BPA	0x00000001	/* Flow Control Busy ... */
154 
155 /* DEBUG Register defines */
156 /* MTL TxStatus FIFO */
157 #define GMAC_DEBUG_TXSTSFSTS	BIT(25)	/* MTL TxStatus FIFO Full Status */
158 #define GMAC_DEBUG_TXFSTS	BIT(24) /* MTL Tx FIFO Not Empty Status */
159 #define GMAC_DEBUG_TWCSTS	BIT(22) /* MTL Tx FIFO Write Controller */
160 /* MTL Tx FIFO Read Controller Status */
161 #define GMAC_DEBUG_TRCSTS_MASK	GENMASK(21, 20)
162 #define GMAC_DEBUG_TRCSTS_SHIFT	20
163 #define GMAC_DEBUG_TRCSTS_IDLE	0
164 #define GMAC_DEBUG_TRCSTS_READ	1
165 #define GMAC_DEBUG_TRCSTS_TXW	2
166 #define GMAC_DEBUG_TRCSTS_WRITE	3
167 #define GMAC_DEBUG_TXPAUSED	BIT(19) /* MAC Transmitter in PAUSE */
168 /* MAC Transmit Frame Controller Status */
169 #define GMAC_DEBUG_TFCSTS_MASK	GENMASK(18, 17)
170 #define GMAC_DEBUG_TFCSTS_SHIFT	17
171 #define GMAC_DEBUG_TFCSTS_IDLE	0
172 #define GMAC_DEBUG_TFCSTS_WAIT	1
173 #define GMAC_DEBUG_TFCSTS_GEN_PAUSE	2
174 #define GMAC_DEBUG_TFCSTS_XFER	3
175 /* MAC GMII or MII Transmit Protocol Engine Status */
176 #define GMAC_DEBUG_TPESTS	BIT(16)
177 #define GMAC_DEBUG_RXFSTS_MASK	GENMASK(9, 8) /* MTL Rx FIFO Fill-level */
178 #define GMAC_DEBUG_RXFSTS_SHIFT	8
179 #define GMAC_DEBUG_RXFSTS_EMPTY	0
180 #define GMAC_DEBUG_RXFSTS_BT	1
181 #define GMAC_DEBUG_RXFSTS_AT	2
182 #define GMAC_DEBUG_RXFSTS_FULL	3
183 #define GMAC_DEBUG_RRCSTS_MASK	GENMASK(6, 5) /* MTL Rx FIFO Read Controller */
184 #define GMAC_DEBUG_RRCSTS_SHIFT	5
185 #define GMAC_DEBUG_RRCSTS_IDLE	0
186 #define GMAC_DEBUG_RRCSTS_RDATA	1
187 #define GMAC_DEBUG_RRCSTS_RSTAT	2
188 #define GMAC_DEBUG_RRCSTS_FLUSH	3
189 #define GMAC_DEBUG_RWCSTS	BIT(4) /* MTL Rx FIFO Write Controller Active */
190 /* MAC Receive Frame Controller FIFO Status */
191 #define GMAC_DEBUG_RFCFCSTS_MASK	GENMASK(2, 1)
192 #define GMAC_DEBUG_RFCFCSTS_SHIFT	1
193 /* MAC GMII or MII Receive Protocol Engine Status */
194 #define GMAC_DEBUG_RPESTS	BIT(0)
195 
196 /*--- DMA BLOCK defines ---*/
197 /* DMA Bus Mode register defines */
198 #define DMA_BUS_MODE_DA		0x00000002	/* Arbitration scheme */
199 #define DMA_BUS_MODE_DSL_MASK	0x0000007c	/* Descriptor Skip Length */
200 #define DMA_BUS_MODE_DSL_SHIFT	2		/*   (in DWORDS)      */
201 /* Programmable burst length (passed thorugh platform)*/
202 #define DMA_BUS_MODE_PBL_MASK	0x00003f00	/* Programmable Burst Len */
203 #define DMA_BUS_MODE_PBL_SHIFT	8
204 #define DMA_BUS_MODE_ATDS	0x00000080	/* Alternate Descriptor Size */
205 
206 enum rx_tx_priority_ratio {
207 	double_ratio = 0x00004000,	/* 2:1 */
208 	triple_ratio = 0x00008000,	/* 3:1 */
209 	quadruple_ratio = 0x0000c000,	/* 4:1 */
210 };
211 
212 #define DMA_BUS_MODE_FB		0x00010000	/* Fixed burst */
213 #define DMA_BUS_MODE_MB		0x04000000	/* Mixed burst */
214 #define DMA_BUS_MODE_RPBL_MASK	0x007e0000	/* Rx-Programmable Burst Len */
215 #define DMA_BUS_MODE_RPBL_SHIFT	17
216 #define DMA_BUS_MODE_USP	0x00800000
217 #define DMA_BUS_MODE_MAXPBL	0x01000000
218 #define DMA_BUS_MODE_AAL	0x02000000
219 
220 /* DMA CRS Control and Status Register Mapping */
221 #define DMA_HOST_TX_DESC	  0x00001048	/* Current Host Tx descriptor */
222 #define DMA_HOST_RX_DESC	  0x0000104c	/* Current Host Rx descriptor */
223 /*  DMA Bus Mode register defines */
224 #define DMA_BUS_PR_RATIO_MASK	  0x0000c000	/* Rx/Tx priority ratio */
225 #define DMA_BUS_PR_RATIO_SHIFT	  14
226 #define DMA_BUS_FB	  	  0x00010000	/* Fixed Burst */
227 
228 /* DMA operation mode defines (start/stop tx/rx are placed in common header)*/
229 /* Disable Drop TCP/IP csum error */
230 #define DMA_CONTROL_DT		0x04000000
231 #define DMA_CONTROL_RSF		0x02000000	/* Receive Store and Forward */
232 #define DMA_CONTROL_DFF		0x01000000	/* Disaable flushing */
233 /* Threshold for Activating the FC */
234 enum rfa {
235 	act_full_minus_1 = 0x00800000,
236 	act_full_minus_2 = 0x00800200,
237 	act_full_minus_3 = 0x00800400,
238 	act_full_minus_4 = 0x00800600,
239 };
240 /* Threshold for Deactivating the FC */
241 enum rfd {
242 	deac_full_minus_1 = 0x00400000,
243 	deac_full_minus_2 = 0x00400800,
244 	deac_full_minus_3 = 0x00401000,
245 	deac_full_minus_4 = 0x00401800,
246 };
247 #define DMA_CONTROL_TSF	0x00200000	/* Transmit  Store and Forward */
248 
249 enum ttc_control {
250 	DMA_CONTROL_TTC_64 = 0x00000000,
251 	DMA_CONTROL_TTC_128 = 0x00004000,
252 	DMA_CONTROL_TTC_192 = 0x00008000,
253 	DMA_CONTROL_TTC_256 = 0x0000c000,
254 	DMA_CONTROL_TTC_40 = 0x00010000,
255 	DMA_CONTROL_TTC_32 = 0x00014000,
256 	DMA_CONTROL_TTC_24 = 0x00018000,
257 	DMA_CONTROL_TTC_16 = 0x0001c000,
258 };
259 #define DMA_CONTROL_TC_TX_MASK	0xfffe3fff
260 
261 #define DMA_CONTROL_EFC		0x00000100
262 #define DMA_CONTROL_FEF		0x00000080
263 #define DMA_CONTROL_FUF		0x00000040
264 
265 /* Receive flow control activation field
266  * RFA field in DMA control register, bits 23,10:9
267  */
268 #define DMA_CONTROL_RFA_MASK	0x00800600
269 
270 /* Receive flow control deactivation field
271  * RFD field in DMA control register, bits 22,12:11
272  */
273 #define DMA_CONTROL_RFD_MASK	0x00401800
274 
275 /* RFD and RFA fields are encoded as follows
276  *
277  *   Bit Field
278  *   0,00 - Full minus 1KB (only valid when rxfifo >= 4KB and EFC enabled)
279  *   0,01 - Full minus 2KB (only valid when rxfifo >= 4KB and EFC enabled)
280  *   0,10 - Full minus 3KB (only valid when rxfifo >= 4KB and EFC enabled)
281  *   0,11 - Full minus 4KB (only valid when rxfifo > 4KB and EFC enabled)
282  *   1,00 - Full minus 5KB (only valid when rxfifo > 8KB and EFC enabled)
283  *   1,01 - Full minus 6KB (only valid when rxfifo > 8KB and EFC enabled)
284  *   1,10 - Full minus 7KB (only valid when rxfifo > 8KB and EFC enabled)
285  *   1,11 - Reserved
286  *
287  * RFD should always be > RFA for a given FIFO size. RFD == RFA may work,
288  * but packet throughput performance may not be as expected.
289  *
290  * Be sure that bit 3 in GMAC Register 6 is set for Unicast Pause frame
291  * detection (IEEE Specification Requirement, Annex 31B, 31B.1, Pause
292  * Description).
293  *
294  * Be sure that DZPA (bit 7 in Flow Control Register, GMAC Register 6),
295  * is set to 0. This allows pause frames with a quanta of 0 to be sent
296  * as an XOFF message to the link peer.
297  */
298 
299 #define RFA_FULL_MINUS_1K	0x00000000
300 #define RFA_FULL_MINUS_2K	0x00000200
301 #define RFA_FULL_MINUS_3K	0x00000400
302 #define RFA_FULL_MINUS_4K	0x00000600
303 #define RFA_FULL_MINUS_5K	0x00800000
304 #define RFA_FULL_MINUS_6K	0x00800200
305 #define RFA_FULL_MINUS_7K	0x00800400
306 
307 #define RFD_FULL_MINUS_1K	0x00000000
308 #define RFD_FULL_MINUS_2K	0x00000800
309 #define RFD_FULL_MINUS_3K	0x00001000
310 #define RFD_FULL_MINUS_4K	0x00001800
311 #define RFD_FULL_MINUS_5K	0x00400000
312 #define RFD_FULL_MINUS_6K	0x00400800
313 #define RFD_FULL_MINUS_7K	0x00401000
314 
315 enum rtc_control {
316 	DMA_CONTROL_RTC_64 = 0x00000000,
317 	DMA_CONTROL_RTC_32 = 0x00000008,
318 	DMA_CONTROL_RTC_96 = 0x00000010,
319 	DMA_CONTROL_RTC_128 = 0x00000018,
320 };
321 #define DMA_CONTROL_TC_RX_MASK	0xffffffe7
322 
323 #define DMA_CONTROL_OSF	0x00000004	/* Operate on second frame */
324 
325 /* MMC registers offset */
326 #define GMAC_MMC_CTRL      0x100
327 #define GMAC_MMC_RX_INTR   0x104
328 #define GMAC_MMC_TX_INTR   0x108
329 #define GMAC_MMC_RX_CSUM_OFFLOAD   0x208
330 #define GMAC_EXTHASH_BASE  0x500
331 
332 extern const struct stmmac_dma_ops dwmac1000_dma_ops;
333 #endif /* __DWMAC1000_H__ */
334