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Commit | Line | Data |
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185f7d9a MS |
1 | /* |
2 | * (C) Copyright 2011 Michal Simek | |
3 | * | |
4 | * Michal SIMEK <monstr@monstr.eu> | |
5 | * | |
6 | * Based on Xilinx gmac driver: | |
7 | * (C) Copyright 2011 Xilinx | |
8 | * | |
3765b3e7 | 9 | * SPDX-License-Identifier: GPL-2.0+ |
185f7d9a MS |
10 | */ |
11 | ||
12 | #include <common.h> | |
13 | #include <net.h> | |
2fd2489b | 14 | #include <netdev.h> |
185f7d9a | 15 | #include <config.h> |
f88a6869 MS |
16 | #include <fdtdec.h> |
17 | #include <libfdt.h> | |
185f7d9a MS |
18 | #include <malloc.h> |
19 | #include <asm/io.h> | |
20 | #include <phy.h> | |
21 | #include <miiphy.h> | |
22 | #include <watchdog.h> | |
96f4f149 | 23 | #include <asm/system.h> |
01fbf310 | 24 | #include <asm/arch/hardware.h> |
80243528 | 25 | #include <asm/arch/sys_proto.h> |
e4d2318a | 26 | #include <asm-generic/errno.h> |
185f7d9a MS |
27 | |
28 | #if !defined(CONFIG_PHYLIB) | |
29 | # error XILINX_GEM_ETHERNET requires PHYLIB | |
30 | #endif | |
31 | ||
32 | /* Bit/mask specification */ | |
33 | #define ZYNQ_GEM_PHYMNTNC_OP_MASK 0x40020000 /* operation mask bits */ | |
34 | #define ZYNQ_GEM_PHYMNTNC_OP_R_MASK 0x20000000 /* read operation */ | |
35 | #define ZYNQ_GEM_PHYMNTNC_OP_W_MASK 0x10000000 /* write operation */ | |
36 | #define ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK 23 /* Shift bits for PHYAD */ | |
37 | #define ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK 18 /* Shift bits for PHREG */ | |
38 | ||
39 | #define ZYNQ_GEM_RXBUF_EOF_MASK 0x00008000 /* End of frame. */ | |
40 | #define ZYNQ_GEM_RXBUF_SOF_MASK 0x00004000 /* Start of frame. */ | |
41 | #define ZYNQ_GEM_RXBUF_LEN_MASK 0x00003FFF /* Mask for length field */ | |
42 | ||
43 | #define ZYNQ_GEM_RXBUF_WRAP_MASK 0x00000002 /* Wrap bit, last BD */ | |
44 | #define ZYNQ_GEM_RXBUF_NEW_MASK 0x00000001 /* Used bit.. */ | |
45 | #define ZYNQ_GEM_RXBUF_ADD_MASK 0xFFFFFFFC /* Mask for address */ | |
46 | ||
47 | /* Wrap bit, last descriptor */ | |
48 | #define ZYNQ_GEM_TXBUF_WRAP_MASK 0x40000000 | |
49 | #define ZYNQ_GEM_TXBUF_LAST_MASK 0x00008000 /* Last buffer */ | |
23a598f7 | 50 | #define ZYNQ_GEM_TXBUF_USED_MASK 0x80000000 /* Used by Hw */ |
185f7d9a | 51 | |
185f7d9a MS |
52 | #define ZYNQ_GEM_NWCTRL_TXEN_MASK 0x00000008 /* Enable transmit */ |
53 | #define ZYNQ_GEM_NWCTRL_RXEN_MASK 0x00000004 /* Enable receive */ | |
54 | #define ZYNQ_GEM_NWCTRL_MDEN_MASK 0x00000010 /* Enable MDIO port */ | |
55 | #define ZYNQ_GEM_NWCTRL_STARTTX_MASK 0x00000200 /* Start tx (tx_go) */ | |
56 | ||
80243528 MS |
57 | #define ZYNQ_GEM_NWCFG_SPEED100 0x000000001 /* 100 Mbps operation */ |
58 | #define ZYNQ_GEM_NWCFG_SPEED1000 0x000000400 /* 1Gbps operation */ | |
59 | #define ZYNQ_GEM_NWCFG_FDEN 0x000000002 /* Full Duplex mode */ | |
60 | #define ZYNQ_GEM_NWCFG_FSREM 0x000020000 /* FCS removal */ | |
6777f386 | 61 | #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x0000c0000 /* Div pclk by 48, max 120MHz */ |
185f7d9a | 62 | |
8a584c8a SDPP |
63 | #ifdef CONFIG_ARM64 |
64 | # define ZYNQ_GEM_DBUS_WIDTH (1 << 21) /* 64 bit bus */ | |
65 | #else | |
66 | # define ZYNQ_GEM_DBUS_WIDTH (0 << 21) /* 32 bit bus */ | |
67 | #endif | |
68 | ||
69 | #define ZYNQ_GEM_NWCFG_INIT (ZYNQ_GEM_DBUS_WIDTH | \ | |
70 | ZYNQ_GEM_NWCFG_FDEN | \ | |
185f7d9a MS |
71 | ZYNQ_GEM_NWCFG_FSREM | \ |
72 | ZYNQ_GEM_NWCFG_MDCCLKDIV) | |
73 | ||
74 | #define ZYNQ_GEM_NWSR_MDIOIDLE_MASK 0x00000004 /* PHY management idle */ | |
75 | ||
76 | #define ZYNQ_GEM_DMACR_BLENGTH 0x00000004 /* INCR4 AHB bursts */ | |
77 | /* Use full configured addressable space (8 Kb) */ | |
78 | #define ZYNQ_GEM_DMACR_RXSIZE 0x00000300 | |
79 | /* Use full configured addressable space (4 Kb) */ | |
80 | #define ZYNQ_GEM_DMACR_TXSIZE 0x00000400 | |
81 | /* Set with binary 00011000 to use 1536 byte(1*max length frame/buffer) */ | |
82 | #define ZYNQ_GEM_DMACR_RXBUF 0x00180000 | |
83 | ||
84 | #define ZYNQ_GEM_DMACR_INIT (ZYNQ_GEM_DMACR_BLENGTH | \ | |
85 | ZYNQ_GEM_DMACR_RXSIZE | \ | |
86 | ZYNQ_GEM_DMACR_TXSIZE | \ | |
87 | ZYNQ_GEM_DMACR_RXBUF) | |
88 | ||
e4d2318a MS |
89 | #define ZYNQ_GEM_TSR_DONE 0x00000020 /* Tx done mask */ |
90 | ||
f97d7e8b MS |
91 | /* Use MII register 1 (MII status register) to detect PHY */ |
92 | #define PHY_DETECT_REG 1 | |
93 | ||
94 | /* Mask used to verify certain PHY features (or register contents) | |
95 | * in the register above: | |
96 | * 0x1000: 10Mbps full duplex support | |
97 | * 0x0800: 10Mbps half duplex support | |
98 | * 0x0008: Auto-negotiation support | |
99 | */ | |
100 | #define PHY_DETECT_MASK 0x1808 | |
101 | ||
a5144237 ST |
102 | /* TX BD status masks */ |
103 | #define ZYNQ_GEM_TXBUF_FRMLEN_MASK 0x000007ff | |
104 | #define ZYNQ_GEM_TXBUF_EXHAUSTED 0x08000000 | |
105 | #define ZYNQ_GEM_TXBUF_UNDERRUN 0x10000000 | |
106 | ||
97598fcf SB |
107 | /* Clock frequencies for different speeds */ |
108 | #define ZYNQ_GEM_FREQUENCY_10 2500000UL | |
109 | #define ZYNQ_GEM_FREQUENCY_100 25000000UL | |
110 | #define ZYNQ_GEM_FREQUENCY_1000 125000000UL | |
111 | ||
185f7d9a MS |
112 | /* Device registers */ |
113 | struct zynq_gem_regs { | |
97a51a03 MS |
114 | u32 nwctrl; /* 0x0 - Network Control reg */ |
115 | u32 nwcfg; /* 0x4 - Network Config reg */ | |
116 | u32 nwsr; /* 0x8 - Network Status reg */ | |
185f7d9a | 117 | u32 reserved1; |
97a51a03 MS |
118 | u32 dmacr; /* 0x10 - DMA Control reg */ |
119 | u32 txsr; /* 0x14 - TX Status reg */ | |
120 | u32 rxqbase; /* 0x18 - RX Q Base address reg */ | |
121 | u32 txqbase; /* 0x1c - TX Q Base address reg */ | |
122 | u32 rxsr; /* 0x20 - RX Status reg */ | |
185f7d9a | 123 | u32 reserved2[2]; |
97a51a03 | 124 | u32 idr; /* 0x2c - Interrupt Disable reg */ |
185f7d9a | 125 | u32 reserved3; |
97a51a03 | 126 | u32 phymntnc; /* 0x34 - Phy Maintaince reg */ |
185f7d9a | 127 | u32 reserved4[18]; |
97a51a03 MS |
128 | u32 hashl; /* 0x80 - Hash Low address reg */ |
129 | u32 hashh; /* 0x84 - Hash High address reg */ | |
185f7d9a MS |
130 | #define LADDR_LOW 0 |
131 | #define LADDR_HIGH 1 | |
97a51a03 MS |
132 | u32 laddr[4][LADDR_HIGH + 1]; /* 0x8c - Specific1 addr low/high reg */ |
133 | u32 match[4]; /* 0xa8 - Type ID1 Match reg */ | |
185f7d9a | 134 | u32 reserved6[18]; |
0ebf4041 MS |
135 | #define STAT_SIZE 44 |
136 | u32 stat[STAT_SIZE]; /* 0x100 - Octects transmitted Low reg */ | |
603ff008 EI |
137 | u32 reserved7[164]; |
138 | u32 transmit_q1_ptr; /* 0x440 - Transmit priority queue 1 */ | |
139 | u32 reserved8[15]; | |
140 | u32 receive_q1_ptr; /* 0x480 - Receive priority queue 1 */ | |
185f7d9a MS |
141 | }; |
142 | ||
143 | /* BD descriptors */ | |
144 | struct emac_bd { | |
145 | u32 addr; /* Next descriptor pointer */ | |
146 | u32 status; | |
147 | }; | |
148 | ||
eda9d307 | 149 | #define RX_BUF 32 |
a5144237 ST |
150 | /* Page table entries are set to 1MB, or multiples of 1MB |
151 | * (not < 1MB). driver uses less bd's so use 1MB bdspace. | |
152 | */ | |
153 | #define BD_SPACE 0x100000 | |
154 | /* BD separation space */ | |
ff475878 | 155 | #define BD_SEPRN_SPACE (RX_BUF * sizeof(struct emac_bd)) |
185f7d9a | 156 | |
603ff008 EI |
157 | /* Setup the first free TX descriptor */ |
158 | #define TX_FREE_DESC 2 | |
159 | ||
185f7d9a MS |
160 | /* Initialized, rxbd_current, rx_first_buf must be 0 after init */ |
161 | struct zynq_gem_priv { | |
a5144237 ST |
162 | struct emac_bd *tx_bd; |
163 | struct emac_bd *rx_bd; | |
164 | char *rxbuffers; | |
185f7d9a MS |
165 | u32 rxbd_current; |
166 | u32 rx_first_buf; | |
167 | int phyaddr; | |
01fbf310 | 168 | u32 emio; |
05868759 | 169 | int init; |
f2fc2768 | 170 | struct zynq_gem_regs *iobase; |
16ce6de8 | 171 | phy_interface_t interface; |
185f7d9a MS |
172 | struct phy_device *phydev; |
173 | struct mii_dev *bus; | |
174 | }; | |
175 | ||
3fac2724 | 176 | static inline int mdio_wait(struct zynq_gem_regs *regs) |
185f7d9a | 177 | { |
4c8b7bf4 | 178 | u32 timeout = 20000; |
185f7d9a MS |
179 | |
180 | /* Wait till MDIO interface is ready to accept a new transaction. */ | |
181 | while (--timeout) { | |
182 | if (readl(®s->nwsr) & ZYNQ_GEM_NWSR_MDIOIDLE_MASK) | |
183 | break; | |
184 | WATCHDOG_RESET(); | |
185 | } | |
186 | ||
187 | if (!timeout) { | |
188 | printf("%s: Timeout\n", __func__); | |
189 | return 1; | |
190 | } | |
191 | ||
192 | return 0; | |
193 | } | |
194 | ||
f2fc2768 MS |
195 | static u32 phy_setup_op(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum, |
196 | u32 op, u16 *data) | |
185f7d9a MS |
197 | { |
198 | u32 mgtcr; | |
f2fc2768 | 199 | struct zynq_gem_regs *regs = priv->iobase; |
185f7d9a | 200 | |
3fac2724 | 201 | if (mdio_wait(regs)) |
185f7d9a MS |
202 | return 1; |
203 | ||
204 | /* Construct mgtcr mask for the operation */ | |
205 | mgtcr = ZYNQ_GEM_PHYMNTNC_OP_MASK | op | | |
206 | (phy_addr << ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK) | | |
207 | (regnum << ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK) | *data; | |
208 | ||
209 | /* Write mgtcr and wait for completion */ | |
210 | writel(mgtcr, ®s->phymntnc); | |
211 | ||
3fac2724 | 212 | if (mdio_wait(regs)) |
185f7d9a MS |
213 | return 1; |
214 | ||
215 | if (op == ZYNQ_GEM_PHYMNTNC_OP_R_MASK) | |
216 | *data = readl(®s->phymntnc); | |
217 | ||
218 | return 0; | |
219 | } | |
220 | ||
f2fc2768 MS |
221 | static u32 phyread(struct zynq_gem_priv *priv, u32 phy_addr, |
222 | u32 regnum, u16 *val) | |
185f7d9a | 223 | { |
198e9a4f MS |
224 | u32 ret; |
225 | ||
f2fc2768 MS |
226 | ret = phy_setup_op(priv, phy_addr, regnum, |
227 | ZYNQ_GEM_PHYMNTNC_OP_R_MASK, val); | |
198e9a4f MS |
228 | |
229 | if (!ret) | |
230 | debug("%s: phy_addr %d, regnum 0x%x, val 0x%x\n", __func__, | |
231 | phy_addr, regnum, *val); | |
232 | ||
233 | return ret; | |
185f7d9a MS |
234 | } |
235 | ||
f2fc2768 MS |
236 | static u32 phywrite(struct zynq_gem_priv *priv, u32 phy_addr, |
237 | u32 regnum, u16 data) | |
185f7d9a | 238 | { |
198e9a4f MS |
239 | debug("%s: phy_addr %d, regnum 0x%x, data 0x%x\n", __func__, phy_addr, |
240 | regnum, data); | |
241 | ||
f2fc2768 MS |
242 | return phy_setup_op(priv, phy_addr, regnum, |
243 | ZYNQ_GEM_PHYMNTNC_OP_W_MASK, &data); | |
185f7d9a MS |
244 | } |
245 | ||
b904725a | 246 | static int phy_detection(struct eth_device *dev) |
f97d7e8b MS |
247 | { |
248 | int i; | |
249 | u16 phyreg; | |
250 | struct zynq_gem_priv *priv = dev->priv; | |
251 | ||
252 | if (priv->phyaddr != -1) { | |
f2fc2768 | 253 | phyread(priv, priv->phyaddr, PHY_DETECT_REG, &phyreg); |
f97d7e8b MS |
254 | if ((phyreg != 0xFFFF) && |
255 | ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) { | |
256 | /* Found a valid PHY address */ | |
257 | debug("Default phy address %d is valid\n", | |
258 | priv->phyaddr); | |
b904725a | 259 | return 0; |
f97d7e8b MS |
260 | } else { |
261 | debug("PHY address is not setup correctly %d\n", | |
262 | priv->phyaddr); | |
263 | priv->phyaddr = -1; | |
264 | } | |
265 | } | |
266 | ||
267 | debug("detecting phy address\n"); | |
268 | if (priv->phyaddr == -1) { | |
269 | /* detect the PHY address */ | |
270 | for (i = 31; i >= 0; i--) { | |
f2fc2768 | 271 | phyread(priv, i, PHY_DETECT_REG, &phyreg); |
f97d7e8b MS |
272 | if ((phyreg != 0xFFFF) && |
273 | ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) { | |
274 | /* Found a valid PHY address */ | |
275 | priv->phyaddr = i; | |
276 | debug("Found valid phy address, %d\n", i); | |
b904725a | 277 | return 0; |
f97d7e8b MS |
278 | } |
279 | } | |
280 | } | |
281 | printf("PHY is not detected\n"); | |
b904725a | 282 | return -1; |
f97d7e8b MS |
283 | } |
284 | ||
185f7d9a MS |
285 | static int zynq_gem_setup_mac(struct eth_device *dev) |
286 | { | |
287 | u32 i, macaddrlow, macaddrhigh; | |
288 | struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; | |
289 | ||
290 | /* Set the MAC bits [31:0] in BOT */ | |
291 | macaddrlow = dev->enetaddr[0]; | |
292 | macaddrlow |= dev->enetaddr[1] << 8; | |
293 | macaddrlow |= dev->enetaddr[2] << 16; | |
294 | macaddrlow |= dev->enetaddr[3] << 24; | |
295 | ||
296 | /* Set MAC bits [47:32] in TOP */ | |
297 | macaddrhigh = dev->enetaddr[4]; | |
298 | macaddrhigh |= dev->enetaddr[5] << 8; | |
299 | ||
300 | for (i = 0; i < 4; i++) { | |
301 | writel(0, ®s->laddr[i][LADDR_LOW]); | |
302 | writel(0, ®s->laddr[i][LADDR_HIGH]); | |
303 | /* Do not use MATCHx register */ | |
304 | writel(0, ®s->match[i]); | |
305 | } | |
306 | ||
307 | writel(macaddrlow, ®s->laddr[0][LADDR_LOW]); | |
308 | writel(macaddrhigh, ®s->laddr[0][LADDR_HIGH]); | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
313 | static int zynq_gem_init(struct eth_device *dev, bd_t * bis) | |
314 | { | |
97598fcf | 315 | u32 i; |
b904725a | 316 | int ret; |
97598fcf | 317 | unsigned long clk_rate = 0; |
185f7d9a | 318 | struct phy_device *phydev; |
185f7d9a MS |
319 | struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; |
320 | struct zynq_gem_priv *priv = dev->priv; | |
603ff008 EI |
321 | struct emac_bd *dummy_tx_bd = &priv->tx_bd[TX_FREE_DESC]; |
322 | struct emac_bd *dummy_rx_bd = &priv->tx_bd[TX_FREE_DESC + 2]; | |
185f7d9a MS |
323 | const u32 supported = SUPPORTED_10baseT_Half | |
324 | SUPPORTED_10baseT_Full | | |
325 | SUPPORTED_100baseT_Half | | |
326 | SUPPORTED_100baseT_Full | | |
327 | SUPPORTED_1000baseT_Half | | |
328 | SUPPORTED_1000baseT_Full; | |
329 | ||
05868759 MS |
330 | if (!priv->init) { |
331 | /* Disable all interrupts */ | |
332 | writel(0xFFFFFFFF, ®s->idr); | |
333 | ||
334 | /* Disable the receiver & transmitter */ | |
335 | writel(0, ®s->nwctrl); | |
336 | writel(0, ®s->txsr); | |
337 | writel(0, ®s->rxsr); | |
338 | writel(0, ®s->phymntnc); | |
339 | ||
340 | /* Clear the Hash registers for the mac address | |
341 | * pointed by AddressPtr | |
342 | */ | |
343 | writel(0x0, ®s->hashl); | |
344 | /* Write bits [63:32] in TOP */ | |
345 | writel(0x0, ®s->hashh); | |
346 | ||
347 | /* Clear all counters */ | |
0ebf4041 | 348 | for (i = 0; i < STAT_SIZE; i++) |
05868759 MS |
349 | readl(®s->stat[i]); |
350 | ||
351 | /* Setup RxBD space */ | |
a5144237 | 352 | memset(priv->rx_bd, 0, RX_BUF * sizeof(struct emac_bd)); |
05868759 MS |
353 | |
354 | for (i = 0; i < RX_BUF; i++) { | |
355 | priv->rx_bd[i].status = 0xF0000000; | |
356 | priv->rx_bd[i].addr = | |
5b47d407 | 357 | ((ulong)(priv->rxbuffers) + |
185f7d9a | 358 | (i * PKTSIZE_ALIGN)); |
05868759 MS |
359 | } |
360 | /* WRAP bit to last BD */ | |
361 | priv->rx_bd[--i].addr |= ZYNQ_GEM_RXBUF_WRAP_MASK; | |
362 | /* Write RxBDs to IP */ | |
5b47d407 | 363 | writel((ulong)priv->rx_bd, ®s->rxqbase); |
185f7d9a | 364 | |
05868759 MS |
365 | /* Setup for DMA Configuration register */ |
366 | writel(ZYNQ_GEM_DMACR_INIT, ®s->dmacr); | |
185f7d9a | 367 | |
05868759 | 368 | /* Setup for Network Control register, MDIO, Rx and Tx enable */ |
80243528 | 369 | setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_MDEN_MASK); |
185f7d9a | 370 | |
603ff008 EI |
371 | /* Disable the second priority queue */ |
372 | dummy_tx_bd->addr = 0; | |
373 | dummy_tx_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK | | |
374 | ZYNQ_GEM_TXBUF_LAST_MASK| | |
375 | ZYNQ_GEM_TXBUF_USED_MASK; | |
376 | ||
377 | dummy_rx_bd->addr = ZYNQ_GEM_RXBUF_WRAP_MASK | | |
378 | ZYNQ_GEM_RXBUF_NEW_MASK; | |
379 | dummy_rx_bd->status = 0; | |
380 | flush_dcache_range((ulong)&dummy_tx_bd, (ulong)&dummy_tx_bd + | |
381 | sizeof(dummy_tx_bd)); | |
382 | flush_dcache_range((ulong)&dummy_rx_bd, (ulong)&dummy_rx_bd + | |
383 | sizeof(dummy_rx_bd)); | |
384 | ||
385 | writel((ulong)dummy_tx_bd, ®s->transmit_q1_ptr); | |
386 | writel((ulong)dummy_rx_bd, ®s->receive_q1_ptr); | |
387 | ||
05868759 MS |
388 | priv->init++; |
389 | } | |
390 | ||
b904725a MS |
391 | ret = phy_detection(dev); |
392 | if (ret) { | |
393 | printf("GEM PHY init failed\n"); | |
394 | return ret; | |
395 | } | |
f97d7e8b | 396 | |
185f7d9a | 397 | /* interface - look at tsec */ |
c1a9fa4b | 398 | phydev = phy_connect(priv->bus, priv->phyaddr, dev, |
16ce6de8 | 399 | priv->interface); |
185f7d9a | 400 | |
80243528 MS |
401 | phydev->supported = supported | ADVERTISED_Pause | |
402 | ADVERTISED_Asym_Pause; | |
185f7d9a MS |
403 | phydev->advertising = phydev->supported; |
404 | priv->phydev = phydev; | |
405 | phy_config(phydev); | |
406 | phy_startup(phydev); | |
407 | ||
4ed4aa20 MS |
408 | if (!phydev->link) { |
409 | printf("%s: No link.\n", phydev->dev->name); | |
410 | return -1; | |
411 | } | |
412 | ||
80243528 MS |
413 | switch (phydev->speed) { |
414 | case SPEED_1000: | |
415 | writel(ZYNQ_GEM_NWCFG_INIT | ZYNQ_GEM_NWCFG_SPEED1000, | |
416 | ®s->nwcfg); | |
97598fcf | 417 | clk_rate = ZYNQ_GEM_FREQUENCY_1000; |
80243528 MS |
418 | break; |
419 | case SPEED_100: | |
242b1547 MS |
420 | writel(ZYNQ_GEM_NWCFG_INIT | ZYNQ_GEM_NWCFG_SPEED100, |
421 | ®s->nwcfg); | |
97598fcf | 422 | clk_rate = ZYNQ_GEM_FREQUENCY_100; |
80243528 MS |
423 | break; |
424 | case SPEED_10: | |
97598fcf | 425 | clk_rate = ZYNQ_GEM_FREQUENCY_10; |
80243528 MS |
426 | break; |
427 | } | |
01fbf310 DA |
428 | |
429 | /* Change the rclk and clk only not using EMIO interface */ | |
430 | if (!priv->emio) | |
431 | zynq_slcr_gem_clk_setup(dev->iobase != | |
97598fcf | 432 | ZYNQ_GEM_BASEADDR0, clk_rate); |
80243528 MS |
433 | |
434 | setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK | | |
435 | ZYNQ_GEM_NWCTRL_TXEN_MASK); | |
436 | ||
185f7d9a MS |
437 | return 0; |
438 | } | |
439 | ||
e4d2318a MS |
440 | static int wait_for_bit(const char *func, u32 *reg, const u32 mask, |
441 | bool set, unsigned int timeout) | |
442 | { | |
443 | u32 val; | |
444 | unsigned long start = get_timer(0); | |
445 | ||
446 | while (1) { | |
447 | val = readl(reg); | |
448 | ||
449 | if (!set) | |
450 | val = ~val; | |
451 | ||
452 | if ((val & mask) == mask) | |
453 | return 0; | |
454 | ||
455 | if (get_timer(start) > timeout) | |
456 | break; | |
457 | ||
458 | udelay(1); | |
459 | } | |
460 | ||
461 | debug("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n", | |
462 | func, reg, mask, set); | |
463 | ||
464 | return -ETIMEDOUT; | |
465 | } | |
466 | ||
185f7d9a MS |
467 | static int zynq_gem_send(struct eth_device *dev, void *ptr, int len) |
468 | { | |
a5144237 | 469 | u32 addr, size; |
185f7d9a MS |
470 | struct zynq_gem_priv *priv = dev->priv; |
471 | struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; | |
23a598f7 | 472 | struct emac_bd *current_bd = &priv->tx_bd[1]; |
185f7d9a | 473 | |
185f7d9a | 474 | /* Setup Tx BD */ |
a5144237 ST |
475 | memset(priv->tx_bd, 0, sizeof(struct emac_bd)); |
476 | ||
5b47d407 | 477 | priv->tx_bd->addr = (ulong)ptr; |
a5144237 | 478 | priv->tx_bd->status = (len & ZYNQ_GEM_TXBUF_FRMLEN_MASK) | |
23a598f7 MS |
479 | ZYNQ_GEM_TXBUF_LAST_MASK; |
480 | /* Dummy descriptor to mark it as the last in descriptor chain */ | |
481 | current_bd->addr = 0x0; | |
482 | current_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK | | |
483 | ZYNQ_GEM_TXBUF_LAST_MASK| | |
484 | ZYNQ_GEM_TXBUF_USED_MASK; | |
185f7d9a | 485 | |
45c07741 MS |
486 | /* setup BD */ |
487 | writel((ulong)priv->tx_bd, ®s->txqbase); | |
488 | ||
5b47d407 | 489 | addr = (ulong) ptr; |
a5144237 ST |
490 | addr &= ~(ARCH_DMA_MINALIGN - 1); |
491 | size = roundup(len, ARCH_DMA_MINALIGN); | |
492 | flush_dcache_range(addr, addr + size); | |
96f4f149 | 493 | |
5b47d407 | 494 | addr = (ulong)priv->rxbuffers; |
96f4f149 SDPP |
495 | addr &= ~(ARCH_DMA_MINALIGN - 1); |
496 | size = roundup((RX_BUF * PKTSIZE_ALIGN), ARCH_DMA_MINALIGN); | |
497 | flush_dcache_range(addr, addr + size); | |
a5144237 | 498 | barrier(); |
185f7d9a MS |
499 | |
500 | /* Start transmit */ | |
501 | setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_STARTTX_MASK); | |
502 | ||
a5144237 | 503 | /* Read TX BD status */ |
a5144237 ST |
504 | if (priv->tx_bd->status & ZYNQ_GEM_TXBUF_EXHAUSTED) |
505 | printf("TX buffers exhausted in mid frame\n"); | |
185f7d9a | 506 | |
e4d2318a MS |
507 | return wait_for_bit(__func__, ®s->txsr, ZYNQ_GEM_TSR_DONE, |
508 | true, 20000); | |
185f7d9a MS |
509 | } |
510 | ||
511 | /* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */ | |
512 | static int zynq_gem_recv(struct eth_device *dev) | |
513 | { | |
514 | int frame_len; | |
515 | struct zynq_gem_priv *priv = dev->priv; | |
516 | struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current]; | |
517 | struct emac_bd *first_bd; | |
518 | ||
519 | if (!(current_bd->addr & ZYNQ_GEM_RXBUF_NEW_MASK)) | |
520 | return 0; | |
521 | ||
522 | if (!(current_bd->status & | |
523 | (ZYNQ_GEM_RXBUF_SOF_MASK | ZYNQ_GEM_RXBUF_EOF_MASK))) { | |
524 | printf("GEM: SOF or EOF not set for last buffer received!\n"); | |
525 | return 0; | |
526 | } | |
527 | ||
528 | frame_len = current_bd->status & ZYNQ_GEM_RXBUF_LEN_MASK; | |
529 | if (frame_len) { | |
a5144237 ST |
530 | u32 addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK; |
531 | addr &= ~(ARCH_DMA_MINALIGN - 1); | |
a5144237 | 532 | |
5b47d407 | 533 | net_process_received_packet((u8 *)(ulong)addr, frame_len); |
185f7d9a MS |
534 | |
535 | if (current_bd->status & ZYNQ_GEM_RXBUF_SOF_MASK) | |
536 | priv->rx_first_buf = priv->rxbd_current; | |
537 | else { | |
538 | current_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK; | |
539 | current_bd->status = 0xF0000000; /* FIXME */ | |
540 | } | |
541 | ||
542 | if (current_bd->status & ZYNQ_GEM_RXBUF_EOF_MASK) { | |
543 | first_bd = &priv->rx_bd[priv->rx_first_buf]; | |
544 | first_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK; | |
545 | first_bd->status = 0xF0000000; | |
546 | } | |
547 | ||
548 | if ((++priv->rxbd_current) >= RX_BUF) | |
549 | priv->rxbd_current = 0; | |
185f7d9a MS |
550 | } |
551 | ||
3b90d0af | 552 | return frame_len; |
185f7d9a MS |
553 | } |
554 | ||
555 | static void zynq_gem_halt(struct eth_device *dev) | |
556 | { | |
557 | struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; | |
558 | ||
80243528 MS |
559 | clrsetbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK | |
560 | ZYNQ_GEM_NWCTRL_TXEN_MASK, 0); | |
185f7d9a MS |
561 | } |
562 | ||
563 | static int zynq_gem_miiphyread(const char *devname, uchar addr, | |
564 | uchar reg, ushort *val) | |
565 | { | |
566 | struct eth_device *dev = eth_get_dev(); | |
f2fc2768 | 567 | struct zynq_gem_priv *priv = dev->priv; |
185f7d9a MS |
568 | int ret; |
569 | ||
f2fc2768 | 570 | ret = phyread(priv, addr, reg, val); |
185f7d9a MS |
571 | debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, *val); |
572 | return ret; | |
573 | } | |
574 | ||
575 | static int zynq_gem_miiphy_write(const char *devname, uchar addr, | |
576 | uchar reg, ushort val) | |
577 | { | |
578 | struct eth_device *dev = eth_get_dev(); | |
f2fc2768 | 579 | struct zynq_gem_priv *priv = dev->priv; |
185f7d9a MS |
580 | |
581 | debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, val); | |
f2fc2768 | 582 | return phywrite(priv, addr, reg, val); |
185f7d9a MS |
583 | } |
584 | ||
58405378 MS |
585 | int zynq_gem_initialize(bd_t *bis, phys_addr_t base_addr, |
586 | int phy_addr, u32 emio) | |
185f7d9a MS |
587 | { |
588 | struct eth_device *dev; | |
589 | struct zynq_gem_priv *priv; | |
a5144237 | 590 | void *bd_space; |
185f7d9a MS |
591 | |
592 | dev = calloc(1, sizeof(*dev)); | |
593 | if (dev == NULL) | |
594 | return -1; | |
595 | ||
596 | dev->priv = calloc(1, sizeof(struct zynq_gem_priv)); | |
597 | if (dev->priv == NULL) { | |
598 | free(dev); | |
599 | return -1; | |
600 | } | |
601 | priv = dev->priv; | |
602 | ||
a5144237 ST |
603 | /* Align rxbuffers to ARCH_DMA_MINALIGN */ |
604 | priv->rxbuffers = memalign(ARCH_DMA_MINALIGN, RX_BUF * PKTSIZE_ALIGN); | |
605 | memset(priv->rxbuffers, 0, RX_BUF * PKTSIZE_ALIGN); | |
606 | ||
96f4f149 | 607 | /* Align bd_space to MMU_SECTION_SHIFT */ |
a5144237 | 608 | bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE); |
9ce1edc8 MS |
609 | mmu_set_region_dcache_behaviour((phys_addr_t)bd_space, |
610 | BD_SPACE, DCACHE_OFF); | |
a5144237 ST |
611 | |
612 | /* Initialize the bd spaces for tx and rx bd's */ | |
613 | priv->tx_bd = (struct emac_bd *)bd_space; | |
5b47d407 | 614 | priv->rx_bd = (struct emac_bd *)((ulong)bd_space + BD_SEPRN_SPACE); |
a5144237 | 615 | |
117cd4cc | 616 | priv->phyaddr = phy_addr; |
01fbf310 | 617 | priv->emio = emio; |
185f7d9a | 618 | |
16ce6de8 MS |
619 | #ifndef CONFIG_ZYNQ_GEM_INTERFACE |
620 | priv->interface = PHY_INTERFACE_MODE_MII; | |
621 | #else | |
622 | priv->interface = CONFIG_ZYNQ_GEM_INTERFACE; | |
623 | #endif | |
624 | ||
58405378 | 625 | sprintf(dev->name, "Gem.%lx", base_addr); |
185f7d9a MS |
626 | |
627 | dev->iobase = base_addr; | |
f2fc2768 | 628 | priv->iobase = (struct zynq_gem_regs *)base_addr; |
185f7d9a MS |
629 | |
630 | dev->init = zynq_gem_init; | |
631 | dev->halt = zynq_gem_halt; | |
632 | dev->send = zynq_gem_send; | |
633 | dev->recv = zynq_gem_recv; | |
634 | dev->write_hwaddr = zynq_gem_setup_mac; | |
635 | ||
636 | eth_register(dev); | |
637 | ||
638 | miiphy_register(dev->name, zynq_gem_miiphyread, zynq_gem_miiphy_write); | |
639 | priv->bus = miiphy_get_dev_by_name(dev->name); | |
640 | ||
641 | return 1; | |
642 | } | |
f88a6869 | 643 | |
0f925822 | 644 | #if CONFIG_IS_ENABLED(OF_CONTROL) |
f88a6869 MS |
645 | int zynq_gem_of_init(const void *blob) |
646 | { | |
647 | int offset = 0; | |
648 | u32 ret = 0; | |
649 | u32 reg, phy_reg; | |
650 | ||
651 | debug("ZYNQ GEM: Initialization\n"); | |
652 | ||
653 | do { | |
654 | offset = fdt_node_offset_by_compatible(blob, offset, | |
655 | "xlnx,ps7-ethernet-1.00.a"); | |
656 | if (offset != -1) { | |
657 | reg = fdtdec_get_addr(blob, offset, "reg"); | |
658 | if (reg != FDT_ADDR_T_NONE) { | |
659 | offset = fdtdec_lookup_phandle(blob, offset, | |
660 | "phy-handle"); | |
661 | if (offset != -1) | |
662 | phy_reg = fdtdec_get_addr(blob, offset, | |
663 | "reg"); | |
664 | else | |
665 | phy_reg = 0; | |
666 | ||
667 | debug("ZYNQ GEM: addr %x, phyaddr %x\n", | |
668 | reg, phy_reg); | |
669 | ||
670 | ret |= zynq_gem_initialize(NULL, reg, | |
671 | phy_reg, 0); | |
672 | ||
673 | } else { | |
674 | debug("ZYNQ GEM: Can't get base address\n"); | |
675 | return -1; | |
676 | } | |
677 | } | |
678 | } while (offset != -1); | |
679 | ||
680 | return ret; | |
681 | } | |
682 | #endif |