1 // SPDX-License-Identifier: GPL-2.0
3 * Driver for Marvell NETA network card for Armada XP and Armada 370 SoCs.
6 * Copyright (C) 2014-2015 Stefan Roese <sr@denx.de>
8 * Based on the Linux version which is:
9 * Copyright (C) 2012 Marvell
11 * Rami Rosen <rosenr@marvell.com>
12 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
23 #include <dm/devres.h>
24 #include <linux/errno.h>
28 #include <asm/arch/cpu.h>
29 #include <asm/arch/soc.h>
30 #include <linux/compat.h>
31 #include <linux/mbus.h>
32 #include <asm-generic/gpio.h>
34 DECLARE_GLOBAL_DATA_PTR;
36 #if !defined(CONFIG_PHYLIB)
37 # error Marvell mvneta requires PHYLIB
40 #define CONFIG_NR_CPUS 1
41 #define ETH_HLEN 14 /* Total octets in header */
43 /* 2(HW hdr) 14(MAC hdr) 4(CRC) 32(extra for cache prefetch) */
44 #define WRAP (2 + ETH_HLEN + 4 + 32)
46 #define RX_BUFFER_SIZE (ALIGN(MTU + WRAP, ARCH_DMA_MINALIGN))
48 #define MVNETA_SMI_TIMEOUT 10000
51 #define MVNETA_RXQ_CONFIG_REG(q) (0x1400 + ((q) << 2))
52 #define MVNETA_RXQ_HW_BUF_ALLOC BIT(1)
53 #define MVNETA_RXQ_PKT_OFFSET_ALL_MASK (0xf << 8)
54 #define MVNETA_RXQ_PKT_OFFSET_MASK(offs) ((offs) << 8)
55 #define MVNETA_RXQ_THRESHOLD_REG(q) (0x14c0 + ((q) << 2))
56 #define MVNETA_RXQ_NON_OCCUPIED(v) ((v) << 16)
57 #define MVNETA_RXQ_BASE_ADDR_REG(q) (0x1480 + ((q) << 2))
58 #define MVNETA_RXQ_SIZE_REG(q) (0x14a0 + ((q) << 2))
59 #define MVNETA_RXQ_BUF_SIZE_SHIFT 19
60 #define MVNETA_RXQ_BUF_SIZE_MASK (0x1fff << 19)
61 #define MVNETA_RXQ_STATUS_REG(q) (0x14e0 + ((q) << 2))
62 #define MVNETA_RXQ_OCCUPIED_ALL_MASK 0x3fff
63 #define MVNETA_RXQ_STATUS_UPDATE_REG(q) (0x1500 + ((q) << 2))
64 #define MVNETA_RXQ_ADD_NON_OCCUPIED_SHIFT 16
65 #define MVNETA_RXQ_ADD_NON_OCCUPIED_MAX 255
66 #define MVNETA_PORT_RX_RESET 0x1cc0
67 #define MVNETA_PORT_RX_DMA_RESET BIT(0)
68 #define MVNETA_PHY_ADDR 0x2000
69 #define MVNETA_PHY_ADDR_MASK 0x1f
70 #define MVNETA_SMI 0x2004
71 #define MVNETA_PHY_REG_MASK 0x1f
72 /* SMI register fields */
73 #define MVNETA_SMI_DATA_OFFS 0 /* Data */
74 #define MVNETA_SMI_DATA_MASK (0xffff << MVNETA_SMI_DATA_OFFS)
75 #define MVNETA_SMI_DEV_ADDR_OFFS 16 /* PHY device address */
76 #define MVNETA_SMI_REG_ADDR_OFFS 21 /* PHY device reg addr*/
77 #define MVNETA_SMI_OPCODE_OFFS 26 /* Write/Read opcode */
78 #define MVNETA_SMI_OPCODE_READ (1 << MVNETA_SMI_OPCODE_OFFS)
79 #define MVNETA_SMI_READ_VALID (1 << 27) /* Read Valid */
80 #define MVNETA_SMI_BUSY (1 << 28) /* Busy */
81 #define MVNETA_MBUS_RETRY 0x2010
82 #define MVNETA_UNIT_INTR_CAUSE 0x2080
83 #define MVNETA_UNIT_CONTROL 0x20B0
84 #define MVNETA_PHY_POLLING_ENABLE BIT(1)
85 #define MVNETA_WIN_BASE(w) (0x2200 + ((w) << 3))
86 #define MVNETA_WIN_SIZE(w) (0x2204 + ((w) << 3))
87 #define MVNETA_WIN_REMAP(w) (0x2280 + ((w) << 2))
88 #define MVNETA_WIN_SIZE_MASK (0xffff0000)
89 #define MVNETA_BASE_ADDR_ENABLE 0x2290
90 #define MVNETA_BASE_ADDR_ENABLE_BIT 0x1
91 #define MVNETA_PORT_ACCESS_PROTECT 0x2294
92 #define MVNETA_PORT_ACCESS_PROTECT_WIN0_RW 0x3
93 #define MVNETA_PORT_CONFIG 0x2400
94 #define MVNETA_UNI_PROMISC_MODE BIT(0)
95 #define MVNETA_DEF_RXQ(q) ((q) << 1)
96 #define MVNETA_DEF_RXQ_ARP(q) ((q) << 4)
97 #define MVNETA_TX_UNSET_ERR_SUM BIT(12)
98 #define MVNETA_DEF_RXQ_TCP(q) ((q) << 16)
99 #define MVNETA_DEF_RXQ_UDP(q) ((q) << 19)
100 #define MVNETA_DEF_RXQ_BPDU(q) ((q) << 22)
101 #define MVNETA_RX_CSUM_WITH_PSEUDO_HDR BIT(25)
102 #define MVNETA_PORT_CONFIG_DEFL_VALUE(q) (MVNETA_DEF_RXQ(q) | \
103 MVNETA_DEF_RXQ_ARP(q) | \
104 MVNETA_DEF_RXQ_TCP(q) | \
105 MVNETA_DEF_RXQ_UDP(q) | \
106 MVNETA_DEF_RXQ_BPDU(q) | \
107 MVNETA_TX_UNSET_ERR_SUM | \
108 MVNETA_RX_CSUM_WITH_PSEUDO_HDR)
109 #define MVNETA_PORT_CONFIG_EXTEND 0x2404
110 #define MVNETA_MAC_ADDR_LOW 0x2414
111 #define MVNETA_MAC_ADDR_HIGH 0x2418
112 #define MVNETA_SDMA_CONFIG 0x241c
113 #define MVNETA_SDMA_BRST_SIZE_16 4
114 #define MVNETA_RX_BRST_SZ_MASK(burst) ((burst) << 1)
115 #define MVNETA_RX_NO_DATA_SWAP BIT(4)
116 #define MVNETA_TX_NO_DATA_SWAP BIT(5)
117 #define MVNETA_DESC_SWAP BIT(6)
118 #define MVNETA_TX_BRST_SZ_MASK(burst) ((burst) << 22)
119 #define MVNETA_PORT_STATUS 0x2444
120 #define MVNETA_TX_IN_PRGRS BIT(1)
121 #define MVNETA_TX_FIFO_EMPTY BIT(8)
122 #define MVNETA_RX_MIN_FRAME_SIZE 0x247c
123 #define MVNETA_SERDES_CFG 0x24A0
124 #define MVNETA_SGMII_SERDES_PROTO 0x0cc7
125 #define MVNETA_QSGMII_SERDES_PROTO 0x0667
126 #define MVNETA_TYPE_PRIO 0x24bc
127 #define MVNETA_FORCE_UNI BIT(21)
128 #define MVNETA_TXQ_CMD_1 0x24e4
129 #define MVNETA_TXQ_CMD 0x2448
130 #define MVNETA_TXQ_DISABLE_SHIFT 8
131 #define MVNETA_TXQ_ENABLE_MASK 0x000000ff
132 #define MVNETA_ACC_MODE 0x2500
133 #define MVNETA_CPU_MAP(cpu) (0x2540 + ((cpu) << 2))
134 #define MVNETA_CPU_RXQ_ACCESS_ALL_MASK 0x000000ff
135 #define MVNETA_CPU_TXQ_ACCESS_ALL_MASK 0x0000ff00
136 #define MVNETA_RXQ_TIME_COAL_REG(q) (0x2580 + ((q) << 2))
138 /* Exception Interrupt Port/Queue Cause register */
140 #define MVNETA_INTR_NEW_CAUSE 0x25a0
141 #define MVNETA_INTR_NEW_MASK 0x25a4
143 /* bits 0..7 = TXQ SENT, one bit per queue.
144 * bits 8..15 = RXQ OCCUP, one bit per queue.
145 * bits 16..23 = RXQ FREE, one bit per queue.
146 * bit 29 = OLD_REG_SUM, see old reg ?
147 * bit 30 = TX_ERR_SUM, one bit for 4 ports
148 * bit 31 = MISC_SUM, one bit for 4 ports
150 #define MVNETA_TX_INTR_MASK(nr_txqs) (((1 << nr_txqs) - 1) << 0)
151 #define MVNETA_TX_INTR_MASK_ALL (0xff << 0)
152 #define MVNETA_RX_INTR_MASK(nr_rxqs) (((1 << nr_rxqs) - 1) << 8)
153 #define MVNETA_RX_INTR_MASK_ALL (0xff << 8)
155 #define MVNETA_INTR_OLD_CAUSE 0x25a8
156 #define MVNETA_INTR_OLD_MASK 0x25ac
158 /* Data Path Port/Queue Cause Register */
159 #define MVNETA_INTR_MISC_CAUSE 0x25b0
160 #define MVNETA_INTR_MISC_MASK 0x25b4
161 #define MVNETA_INTR_ENABLE 0x25b8
163 #define MVNETA_RXQ_CMD 0x2680
164 #define MVNETA_RXQ_DISABLE_SHIFT 8
165 #define MVNETA_RXQ_ENABLE_MASK 0x000000ff
166 #define MVETH_TXQ_TOKEN_COUNT_REG(q) (0x2700 + ((q) << 4))
167 #define MVETH_TXQ_TOKEN_CFG_REG(q) (0x2704 + ((q) << 4))
168 #define MVNETA_GMAC_CTRL_0 0x2c00
169 #define MVNETA_GMAC_MAX_RX_SIZE_SHIFT 2
170 #define MVNETA_GMAC_MAX_RX_SIZE_MASK 0x7ffc
171 #define MVNETA_GMAC0_PORT_ENABLE BIT(0)
172 #define MVNETA_GMAC_CTRL_2 0x2c08
173 #define MVNETA_GMAC2_PCS_ENABLE BIT(3)
174 #define MVNETA_GMAC2_PORT_RGMII BIT(4)
175 #define MVNETA_GMAC2_PORT_RESET BIT(6)
176 #define MVNETA_GMAC_STATUS 0x2c10
177 #define MVNETA_GMAC_LINK_UP BIT(0)
178 #define MVNETA_GMAC_SPEED_1000 BIT(1)
179 #define MVNETA_GMAC_SPEED_100 BIT(2)
180 #define MVNETA_GMAC_FULL_DUPLEX BIT(3)
181 #define MVNETA_GMAC_RX_FLOW_CTRL_ENABLE BIT(4)
182 #define MVNETA_GMAC_TX_FLOW_CTRL_ENABLE BIT(5)
183 #define MVNETA_GMAC_RX_FLOW_CTRL_ACTIVE BIT(6)
184 #define MVNETA_GMAC_TX_FLOW_CTRL_ACTIVE BIT(7)
185 #define MVNETA_GMAC_AUTONEG_CONFIG 0x2c0c
186 #define MVNETA_GMAC_FORCE_LINK_DOWN BIT(0)
187 #define MVNETA_GMAC_FORCE_LINK_PASS BIT(1)
188 #define MVNETA_GMAC_FORCE_LINK_UP (BIT(0) | BIT(1))
189 #define MVNETA_GMAC_IB_BYPASS_AN_EN BIT(3)
190 #define MVNETA_GMAC_CONFIG_MII_SPEED BIT(5)
191 #define MVNETA_GMAC_CONFIG_GMII_SPEED BIT(6)
192 #define MVNETA_GMAC_AN_SPEED_EN BIT(7)
193 #define MVNETA_GMAC_SET_FC_EN BIT(8)
194 #define MVNETA_GMAC_ADVERT_FC_EN BIT(9)
195 #define MVNETA_GMAC_CONFIG_FULL_DUPLEX BIT(12)
196 #define MVNETA_GMAC_AN_DUPLEX_EN BIT(13)
197 #define MVNETA_GMAC_SAMPLE_TX_CFG_EN BIT(15)
198 #define MVNETA_MIB_COUNTERS_BASE 0x3080
199 #define MVNETA_MIB_LATE_COLLISION 0x7c
200 #define MVNETA_DA_FILT_SPEC_MCAST 0x3400
201 #define MVNETA_DA_FILT_OTH_MCAST 0x3500
202 #define MVNETA_DA_FILT_UCAST_BASE 0x3600
203 #define MVNETA_TXQ_BASE_ADDR_REG(q) (0x3c00 + ((q) << 2))
204 #define MVNETA_TXQ_SIZE_REG(q) (0x3c20 + ((q) << 2))
205 #define MVNETA_TXQ_SENT_THRESH_ALL_MASK 0x3fff0000
206 #define MVNETA_TXQ_SENT_THRESH_MASK(coal) ((coal) << 16)
207 #define MVNETA_TXQ_UPDATE_REG(q) (0x3c60 + ((q) << 2))
208 #define MVNETA_TXQ_DEC_SENT_SHIFT 16
209 #define MVNETA_TXQ_STATUS_REG(q) (0x3c40 + ((q) << 2))
210 #define MVNETA_TXQ_SENT_DESC_SHIFT 16
211 #define MVNETA_TXQ_SENT_DESC_MASK 0x3fff0000
212 #define MVNETA_PORT_TX_RESET 0x3cf0
213 #define MVNETA_PORT_TX_DMA_RESET BIT(0)
214 #define MVNETA_TX_MTU 0x3e0c
215 #define MVNETA_TX_TOKEN_SIZE 0x3e14
216 #define MVNETA_TX_TOKEN_SIZE_MAX 0xffffffff
217 #define MVNETA_TXQ_TOKEN_SIZE_REG(q) (0x3e40 + ((q) << 2))
218 #define MVNETA_TXQ_TOKEN_SIZE_MAX 0x7fffffff
220 /* Descriptor ring Macros */
221 #define MVNETA_QUEUE_NEXT_DESC(q, index) \
222 (((index) < (q)->last_desc) ? ((index) + 1) : 0)
224 /* Various constants */
227 #define MVNETA_TXDONE_COAL_PKTS 16
228 #define MVNETA_RX_COAL_PKTS 32
229 #define MVNETA_RX_COAL_USEC 100
231 /* The two bytes Marvell header. Either contains a special value used
232 * by Marvell switches when a specific hardware mode is enabled (not
233 * supported by this driver) or is filled automatically by zeroes on
234 * the RX side. Those two bytes being at the front of the Ethernet
235 * header, they allow to have the IP header aligned on a 4 bytes
236 * boundary automatically: the hardware skips those two bytes on its
239 #define MVNETA_MH_SIZE 2
241 #define MVNETA_VLAN_TAG_LEN 4
243 #define MVNETA_CPU_D_CACHE_LINE_SIZE 32
244 #define MVNETA_TX_CSUM_MAX_SIZE 9800
245 #define MVNETA_ACC_MODE_EXT 1
247 /* Timeout constants */
248 #define MVNETA_TX_DISABLE_TIMEOUT_MSEC 1000
249 #define MVNETA_RX_DISABLE_TIMEOUT_MSEC 1000
250 #define MVNETA_TX_FIFO_EMPTY_TIMEOUT 10000
252 #define MVNETA_TX_MTU_MAX 0x3ffff
254 /* Max number of Rx descriptors */
255 #define MVNETA_MAX_RXD 16
257 /* Max number of Tx descriptors */
258 #define MVNETA_MAX_TXD 16
260 /* descriptor aligned size */
261 #define MVNETA_DESC_ALIGNED_SIZE 32
265 struct mvneta_rx_queue *rxqs;
266 struct mvneta_tx_queue *txqs;
272 phy_interface_t phy_interface;
279 struct phy_device *phydev;
280 #if CONFIG_IS_ENABLED(DM_GPIO)
281 struct gpio_desc phy_reset_gpio;
286 /* The mvneta_tx_desc and mvneta_rx_desc structures describe the
287 * layout of the transmit and reception DMA descriptors, and their
288 * layout is therefore defined by the hardware design
291 #define MVNETA_TX_L3_OFF_SHIFT 0
292 #define MVNETA_TX_IP_HLEN_SHIFT 8
293 #define MVNETA_TX_L4_UDP BIT(16)
294 #define MVNETA_TX_L3_IP6 BIT(17)
295 #define MVNETA_TXD_IP_CSUM BIT(18)
296 #define MVNETA_TXD_Z_PAD BIT(19)
297 #define MVNETA_TXD_L_DESC BIT(20)
298 #define MVNETA_TXD_F_DESC BIT(21)
299 #define MVNETA_TXD_FLZ_DESC (MVNETA_TXD_Z_PAD | \
300 MVNETA_TXD_L_DESC | \
302 #define MVNETA_TX_L4_CSUM_FULL BIT(30)
303 #define MVNETA_TX_L4_CSUM_NOT BIT(31)
305 #define MVNETA_RXD_ERR_CRC 0x0
306 #define MVNETA_RXD_ERR_SUMMARY BIT(16)
307 #define MVNETA_RXD_ERR_OVERRUN BIT(17)
308 #define MVNETA_RXD_ERR_LEN BIT(18)
309 #define MVNETA_RXD_ERR_RESOURCE (BIT(17) | BIT(18))
310 #define MVNETA_RXD_ERR_CODE_MASK (BIT(17) | BIT(18))
311 #define MVNETA_RXD_L3_IP4 BIT(25)
312 #define MVNETA_RXD_FIRST_LAST_DESC (BIT(26) | BIT(27))
313 #define MVNETA_RXD_L4_CSUM_OK BIT(30)
315 struct mvneta_tx_desc {
316 u32 command; /* Options used by HW for packet transmitting.*/
317 u16 reserverd1; /* csum_l4 (for future use) */
318 u16 data_size; /* Data size of transmitted packet in bytes */
319 u32 buf_phys_addr; /* Physical addr of transmitted buffer */
320 u32 reserved2; /* hw_cmd - (for future use, PMT) */
321 u32 reserved3[4]; /* Reserved - (for future use) */
324 struct mvneta_rx_desc {
325 u32 status; /* Info about received packet */
326 u16 reserved1; /* pnc_info - (for future use, PnC) */
327 u16 data_size; /* Size of received packet in bytes */
329 u32 buf_phys_addr; /* Physical address of the buffer */
330 u32 reserved2; /* pnc_flow_id (for future use, PnC) */
332 u32 buf_cookie; /* cookie for access to RX buffer in rx path */
333 u16 reserved3; /* prefetch_cmd, for future use */
334 u16 reserved4; /* csum_l4 - (for future use, PnC) */
336 u32 reserved5; /* pnc_extra PnC (for future use, PnC) */
337 u32 reserved6; /* hw_cmd (for future use, PnC and HWF) */
340 struct mvneta_tx_queue {
341 /* Number of this TX queue, in the range 0-7 */
344 /* Number of TX DMA descriptors in the descriptor ring */
347 /* Index of last TX DMA descriptor that was inserted */
350 /* Index of the TX DMA descriptor to be cleaned up */
353 /* Virtual address of the TX DMA descriptors array */
354 struct mvneta_tx_desc *descs;
356 /* DMA address of the TX DMA descriptors array */
357 dma_addr_t descs_phys;
359 /* Index of the last TX DMA descriptor */
362 /* Index of the next TX DMA descriptor to process */
363 int next_desc_to_proc;
366 struct mvneta_rx_queue {
367 /* rx queue number, in the range 0-7 */
370 /* num of rx descriptors in the rx descriptor ring */
373 /* Virtual address of the RX DMA descriptors array */
374 struct mvneta_rx_desc *descs;
376 /* DMA address of the RX DMA descriptors array */
377 dma_addr_t descs_phys;
379 /* Index of the last RX DMA descriptor */
382 /* Index of the next RX DMA descriptor to process */
383 int next_desc_to_proc;
386 /* U-Boot doesn't use the queues, so set the number to 1 */
387 static int rxq_number = 1;
388 static int txq_number = 1;
391 struct buffer_location {
392 struct mvneta_tx_desc *tx_descs;
393 struct mvneta_rx_desc *rx_descs;
398 * All 4 interfaces use the same global buffer, since only one interface
399 * can be enabled at once
401 static struct buffer_location buffer_loc;
404 * Page table entries are set to 1MB, or multiples of 1MB
405 * (not < 1MB). driver uses less bd's so use 1MB bdspace.
407 #define BD_SPACE (1 << 20)
410 * Dummy implementation that can be overwritten by a board
413 __weak int board_network_enable(struct mii_dev *bus)
418 /* Utility/helper methods */
420 /* Write helper method */
421 static void mvreg_write(struct mvneta_port *pp, u32 offset, u32 data)
423 writel(data, pp->base + offset);
426 /* Read helper method */
427 static u32 mvreg_read(struct mvneta_port *pp, u32 offset)
429 return readl(pp->base + offset);
432 /* Clear all MIB counters */
433 static void mvneta_mib_counters_clear(struct mvneta_port *pp)
437 /* Perform dummy reads from MIB counters */
438 for (i = 0; i < MVNETA_MIB_LATE_COLLISION; i += 4)
439 mvreg_read(pp, (MVNETA_MIB_COUNTERS_BASE + i));
442 /* Rx descriptors helper methods */
444 /* Checks whether the RX descriptor having this status is both the first
445 * and the last descriptor for the RX packet. Each RX packet is currently
446 * received through a single RX descriptor, so not having each RX
447 * descriptor with its first and last bits set is an error
449 static int mvneta_rxq_desc_is_first_last(u32 status)
451 return (status & MVNETA_RXD_FIRST_LAST_DESC) ==
452 MVNETA_RXD_FIRST_LAST_DESC;
455 /* Add number of descriptors ready to receive new packets */
456 static void mvneta_rxq_non_occup_desc_add(struct mvneta_port *pp,
457 struct mvneta_rx_queue *rxq,
460 /* Only MVNETA_RXQ_ADD_NON_OCCUPIED_MAX (255) descriptors can
463 while (ndescs > MVNETA_RXQ_ADD_NON_OCCUPIED_MAX) {
464 mvreg_write(pp, MVNETA_RXQ_STATUS_UPDATE_REG(rxq->id),
465 (MVNETA_RXQ_ADD_NON_OCCUPIED_MAX <<
466 MVNETA_RXQ_ADD_NON_OCCUPIED_SHIFT));
467 ndescs -= MVNETA_RXQ_ADD_NON_OCCUPIED_MAX;
470 mvreg_write(pp, MVNETA_RXQ_STATUS_UPDATE_REG(rxq->id),
471 (ndescs << MVNETA_RXQ_ADD_NON_OCCUPIED_SHIFT));
474 /* Get number of RX descriptors occupied by received packets */
475 static int mvneta_rxq_busy_desc_num_get(struct mvneta_port *pp,
476 struct mvneta_rx_queue *rxq)
480 val = mvreg_read(pp, MVNETA_RXQ_STATUS_REG(rxq->id));
481 return val & MVNETA_RXQ_OCCUPIED_ALL_MASK;
484 /* Update num of rx desc called upon return from rx path or
485 * from mvneta_rxq_drop_pkts().
487 static void mvneta_rxq_desc_num_update(struct mvneta_port *pp,
488 struct mvneta_rx_queue *rxq,
489 int rx_done, int rx_filled)
493 if ((rx_done <= 0xff) && (rx_filled <= 0xff)) {
495 (rx_filled << MVNETA_RXQ_ADD_NON_OCCUPIED_SHIFT);
496 mvreg_write(pp, MVNETA_RXQ_STATUS_UPDATE_REG(rxq->id), val);
500 /* Only 255 descriptors can be added at once */
501 while ((rx_done > 0) || (rx_filled > 0)) {
502 if (rx_done <= 0xff) {
509 if (rx_filled <= 0xff) {
510 val |= rx_filled << MVNETA_RXQ_ADD_NON_OCCUPIED_SHIFT;
513 val |= 0xff << MVNETA_RXQ_ADD_NON_OCCUPIED_SHIFT;
516 mvreg_write(pp, MVNETA_RXQ_STATUS_UPDATE_REG(rxq->id), val);
520 /* Get pointer to next RX descriptor to be processed by SW */
521 static struct mvneta_rx_desc *
522 mvneta_rxq_next_desc_get(struct mvneta_rx_queue *rxq)
524 int rx_desc = rxq->next_desc_to_proc;
526 rxq->next_desc_to_proc = MVNETA_QUEUE_NEXT_DESC(rxq, rx_desc);
527 return rxq->descs + rx_desc;
530 /* Tx descriptors helper methods */
532 /* Update HW with number of TX descriptors to be sent */
533 static void mvneta_txq_pend_desc_add(struct mvneta_port *pp,
534 struct mvneta_tx_queue *txq,
539 /* Only 255 descriptors can be added at once ; Assume caller
540 * process TX descriptors in quanta less than 256
543 mvreg_write(pp, MVNETA_TXQ_UPDATE_REG(txq->id), val);
546 /* Get pointer to next TX descriptor to be processed (send) by HW */
547 static struct mvneta_tx_desc *
548 mvneta_txq_next_desc_get(struct mvneta_tx_queue *txq)
550 int tx_desc = txq->next_desc_to_proc;
552 txq->next_desc_to_proc = MVNETA_QUEUE_NEXT_DESC(txq, tx_desc);
553 return txq->descs + tx_desc;
556 /* Set rxq buf size */
557 static void mvneta_rxq_buf_size_set(struct mvneta_port *pp,
558 struct mvneta_rx_queue *rxq,
563 val = mvreg_read(pp, MVNETA_RXQ_SIZE_REG(rxq->id));
565 val &= ~MVNETA_RXQ_BUF_SIZE_MASK;
566 val |= ((buf_size >> 3) << MVNETA_RXQ_BUF_SIZE_SHIFT);
568 mvreg_write(pp, MVNETA_RXQ_SIZE_REG(rxq->id), val);
571 static int mvneta_port_is_fixed_link(struct mvneta_port *pp)
573 /* phy_addr is set to invalid value for fixed link */
574 return pp->phyaddr > PHY_MAX_ADDR;
578 /* Start the Ethernet port RX and TX activity */
579 static void mvneta_port_up(struct mvneta_port *pp)
584 /* Enable all initialized TXs. */
585 mvneta_mib_counters_clear(pp);
587 for (queue = 0; queue < txq_number; queue++) {
588 struct mvneta_tx_queue *txq = &pp->txqs[queue];
589 if (txq->descs != NULL)
590 q_map |= (1 << queue);
592 mvreg_write(pp, MVNETA_TXQ_CMD, q_map);
594 /* Enable all initialized RXQs. */
596 for (queue = 0; queue < rxq_number; queue++) {
597 struct mvneta_rx_queue *rxq = &pp->rxqs[queue];
598 if (rxq->descs != NULL)
599 q_map |= (1 << queue);
601 mvreg_write(pp, MVNETA_RXQ_CMD, q_map);
604 /* Stop the Ethernet port activity */
605 static void mvneta_port_down(struct mvneta_port *pp)
610 /* Stop Rx port activity. Check port Rx activity. */
611 val = mvreg_read(pp, MVNETA_RXQ_CMD) & MVNETA_RXQ_ENABLE_MASK;
613 /* Issue stop command for active channels only */
615 mvreg_write(pp, MVNETA_RXQ_CMD,
616 val << MVNETA_RXQ_DISABLE_SHIFT);
618 /* Wait for all Rx activity to terminate. */
621 if (count++ >= MVNETA_RX_DISABLE_TIMEOUT_MSEC) {
623 "TIMEOUT for RX stopped ! rx_queue_cmd: 0x08%x\n",
629 val = mvreg_read(pp, MVNETA_RXQ_CMD);
630 } while (val & 0xff);
632 /* Stop Tx port activity. Check port Tx activity. Issue stop
633 * command for active channels only
635 val = (mvreg_read(pp, MVNETA_TXQ_CMD)) & MVNETA_TXQ_ENABLE_MASK;
638 mvreg_write(pp, MVNETA_TXQ_CMD,
639 (val << MVNETA_TXQ_DISABLE_SHIFT));
641 /* Wait for all Tx activity to terminate. */
644 if (count++ >= MVNETA_TX_DISABLE_TIMEOUT_MSEC) {
646 "TIMEOUT for TX stopped status=0x%08x\n",
652 /* Check TX Command reg that all Txqs are stopped */
653 val = mvreg_read(pp, MVNETA_TXQ_CMD);
655 } while (val & 0xff);
657 /* Double check to verify that TX FIFO is empty */
660 if (count++ >= MVNETA_TX_FIFO_EMPTY_TIMEOUT) {
662 "TX FIFO empty timeout status=0x08%x\n",
668 val = mvreg_read(pp, MVNETA_PORT_STATUS);
669 } while (!(val & MVNETA_TX_FIFO_EMPTY) &&
670 (val & MVNETA_TX_IN_PRGRS));
675 /* Enable the port by setting the port enable bit of the MAC control register */
676 static void mvneta_port_enable(struct mvneta_port *pp)
681 val = mvreg_read(pp, MVNETA_GMAC_CTRL_0);
682 val |= MVNETA_GMAC0_PORT_ENABLE;
683 mvreg_write(pp, MVNETA_GMAC_CTRL_0, val);
686 /* Disable the port and wait for about 200 usec before retuning */
687 static void mvneta_port_disable(struct mvneta_port *pp)
691 /* Reset the Enable bit in the Serial Control Register */
692 val = mvreg_read(pp, MVNETA_GMAC_CTRL_0);
693 val &= ~MVNETA_GMAC0_PORT_ENABLE;
694 mvreg_write(pp, MVNETA_GMAC_CTRL_0, val);
699 /* Multicast tables methods */
701 /* Set all entries in Unicast MAC Table; queue==-1 means reject all */
702 static void mvneta_set_ucast_table(struct mvneta_port *pp, int queue)
710 val = 0x1 | (queue << 1);
711 val |= (val << 24) | (val << 16) | (val << 8);
714 for (offset = 0; offset <= 0xc; offset += 4)
715 mvreg_write(pp, MVNETA_DA_FILT_UCAST_BASE + offset, val);
718 /* Set all entries in Special Multicast MAC Table; queue==-1 means reject all */
719 static void mvneta_set_special_mcast_table(struct mvneta_port *pp, int queue)
727 val = 0x1 | (queue << 1);
728 val |= (val << 24) | (val << 16) | (val << 8);
731 for (offset = 0; offset <= 0xfc; offset += 4)
732 mvreg_write(pp, MVNETA_DA_FILT_SPEC_MCAST + offset, val);
735 /* Set all entries in Other Multicast MAC Table. queue==-1 means reject all */
736 static void mvneta_set_other_mcast_table(struct mvneta_port *pp, int queue)
742 memset(pp->mcast_count, 0, sizeof(pp->mcast_count));
745 memset(pp->mcast_count, 1, sizeof(pp->mcast_count));
746 val = 0x1 | (queue << 1);
747 val |= (val << 24) | (val << 16) | (val << 8);
750 for (offset = 0; offset <= 0xfc; offset += 4)
751 mvreg_write(pp, MVNETA_DA_FILT_OTH_MCAST + offset, val);
754 /* This method sets defaults to the NETA port:
755 * Clears interrupt Cause and Mask registers.
756 * Clears all MAC tables.
757 * Sets defaults to all registers.
758 * Resets RX and TX descriptor rings.
760 * This method can be called after mvneta_port_down() to return the port
761 * settings to defaults.
763 static void mvneta_defaults_set(struct mvneta_port *pp)
769 /* Clear all Cause registers */
770 mvreg_write(pp, MVNETA_INTR_NEW_CAUSE, 0);
771 mvreg_write(pp, MVNETA_INTR_OLD_CAUSE, 0);
772 mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0);
774 /* Mask all interrupts */
775 mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0);
776 mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0);
777 mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0);
778 mvreg_write(pp, MVNETA_INTR_ENABLE, 0);
780 /* Enable MBUS Retry bit16 */
781 mvreg_write(pp, MVNETA_MBUS_RETRY, 0x20);
783 /* Set CPU queue access map - all CPUs have access to all RX
784 * queues and to all TX queues
786 for (cpu = 0; cpu < CONFIG_NR_CPUS; cpu++)
787 mvreg_write(pp, MVNETA_CPU_MAP(cpu),
788 (MVNETA_CPU_RXQ_ACCESS_ALL_MASK |
789 MVNETA_CPU_TXQ_ACCESS_ALL_MASK));
791 /* Reset RX and TX DMAs */
792 mvreg_write(pp, MVNETA_PORT_RX_RESET, MVNETA_PORT_RX_DMA_RESET);
793 mvreg_write(pp, MVNETA_PORT_TX_RESET, MVNETA_PORT_TX_DMA_RESET);
795 /* Disable Legacy WRR, Disable EJP, Release from reset */
796 mvreg_write(pp, MVNETA_TXQ_CMD_1, 0);
797 for (queue = 0; queue < txq_number; queue++) {
798 mvreg_write(pp, MVETH_TXQ_TOKEN_COUNT_REG(queue), 0);
799 mvreg_write(pp, MVETH_TXQ_TOKEN_CFG_REG(queue), 0);
802 mvreg_write(pp, MVNETA_PORT_TX_RESET, 0);
803 mvreg_write(pp, MVNETA_PORT_RX_RESET, 0);
805 /* Set Port Acceleration Mode */
806 val = MVNETA_ACC_MODE_EXT;
807 mvreg_write(pp, MVNETA_ACC_MODE, val);
809 /* Update val of portCfg register accordingly with all RxQueue types */
810 val = MVNETA_PORT_CONFIG_DEFL_VALUE(rxq_def);
811 mvreg_write(pp, MVNETA_PORT_CONFIG, val);
814 mvreg_write(pp, MVNETA_PORT_CONFIG_EXTEND, val);
815 mvreg_write(pp, MVNETA_RX_MIN_FRAME_SIZE, 64);
817 /* Build PORT_SDMA_CONFIG_REG */
820 /* Default burst size */
821 val |= MVNETA_TX_BRST_SZ_MASK(MVNETA_SDMA_BRST_SIZE_16);
822 val |= MVNETA_RX_BRST_SZ_MASK(MVNETA_SDMA_BRST_SIZE_16);
823 val |= MVNETA_RX_NO_DATA_SWAP | MVNETA_TX_NO_DATA_SWAP;
825 /* Assign port SDMA configuration */
826 mvreg_write(pp, MVNETA_SDMA_CONFIG, val);
828 /* Enable PHY polling in hardware if not in fixed-link mode */
829 if (!mvneta_port_is_fixed_link(pp)) {
830 val = mvreg_read(pp, MVNETA_UNIT_CONTROL);
831 val |= MVNETA_PHY_POLLING_ENABLE;
832 mvreg_write(pp, MVNETA_UNIT_CONTROL, val);
835 mvneta_set_ucast_table(pp, -1);
836 mvneta_set_special_mcast_table(pp, -1);
837 mvneta_set_other_mcast_table(pp, -1);
840 /* Set unicast address */
841 static void mvneta_set_ucast_addr(struct mvneta_port *pp, u8 last_nibble,
844 unsigned int unicast_reg;
845 unsigned int tbl_offset;
846 unsigned int reg_offset;
848 /* Locate the Unicast table entry */
849 last_nibble = (0xf & last_nibble);
851 /* offset from unicast tbl base */
852 tbl_offset = (last_nibble / 4) * 4;
854 /* offset within the above reg */
855 reg_offset = last_nibble % 4;
857 unicast_reg = mvreg_read(pp, (MVNETA_DA_FILT_UCAST_BASE + tbl_offset));
860 /* Clear accepts frame bit at specified unicast DA tbl entry */
861 unicast_reg &= ~(0xff << (8 * reg_offset));
863 unicast_reg &= ~(0xff << (8 * reg_offset));
864 unicast_reg |= ((0x01 | (queue << 1)) << (8 * reg_offset));
867 mvreg_write(pp, (MVNETA_DA_FILT_UCAST_BASE + tbl_offset), unicast_reg);
870 /* Set mac address */
871 static void mvneta_mac_addr_set(struct mvneta_port *pp, unsigned char *addr,
878 mac_l = (addr[4] << 8) | (addr[5]);
879 mac_h = (addr[0] << 24) | (addr[1] << 16) |
880 (addr[2] << 8) | (addr[3] << 0);
882 mvreg_write(pp, MVNETA_MAC_ADDR_LOW, mac_l);
883 mvreg_write(pp, MVNETA_MAC_ADDR_HIGH, mac_h);
886 /* Accept frames of this address */
887 mvneta_set_ucast_addr(pp, addr[5], queue);
890 static int mvneta_write_hwaddr(struct udevice *dev)
892 mvneta_mac_addr_set(dev_get_priv(dev),
893 ((struct eth_pdata *)dev_get_platdata(dev))->enetaddr,
899 /* Handle rx descriptor fill by setting buf_cookie and buf_phys_addr */
900 static void mvneta_rx_desc_fill(struct mvneta_rx_desc *rx_desc,
901 u32 phys_addr, u32 cookie)
903 rx_desc->buf_cookie = cookie;
904 rx_desc->buf_phys_addr = phys_addr;
907 /* Decrement sent descriptors counter */
908 static void mvneta_txq_sent_desc_dec(struct mvneta_port *pp,
909 struct mvneta_tx_queue *txq,
914 /* Only 255 TX descriptors can be updated at once */
915 while (sent_desc > 0xff) {
916 val = 0xff << MVNETA_TXQ_DEC_SENT_SHIFT;
917 mvreg_write(pp, MVNETA_TXQ_UPDATE_REG(txq->id), val);
918 sent_desc = sent_desc - 0xff;
921 val = sent_desc << MVNETA_TXQ_DEC_SENT_SHIFT;
922 mvreg_write(pp, MVNETA_TXQ_UPDATE_REG(txq->id), val);
925 /* Get number of TX descriptors already sent by HW */
926 static int mvneta_txq_sent_desc_num_get(struct mvneta_port *pp,
927 struct mvneta_tx_queue *txq)
932 val = mvreg_read(pp, MVNETA_TXQ_STATUS_REG(txq->id));
933 sent_desc = (val & MVNETA_TXQ_SENT_DESC_MASK) >>
934 MVNETA_TXQ_SENT_DESC_SHIFT;
939 /* Display more error info */
940 static void mvneta_rx_error(struct mvneta_port *pp,
941 struct mvneta_rx_desc *rx_desc)
943 u32 status = rx_desc->status;
945 if (!mvneta_rxq_desc_is_first_last(status)) {
947 "bad rx status %08x (buffer oversize), size=%d\n",
948 status, rx_desc->data_size);
952 switch (status & MVNETA_RXD_ERR_CODE_MASK) {
953 case MVNETA_RXD_ERR_CRC:
954 netdev_err(pp->dev, "bad rx status %08x (crc error), size=%d\n",
955 status, rx_desc->data_size);
957 case MVNETA_RXD_ERR_OVERRUN:
958 netdev_err(pp->dev, "bad rx status %08x (overrun error), size=%d\n",
959 status, rx_desc->data_size);
961 case MVNETA_RXD_ERR_LEN:
962 netdev_err(pp->dev, "bad rx status %08x (max frame length error), size=%d\n",
963 status, rx_desc->data_size);
965 case MVNETA_RXD_ERR_RESOURCE:
966 netdev_err(pp->dev, "bad rx status %08x (resource error), size=%d\n",
967 status, rx_desc->data_size);
972 static struct mvneta_rx_queue *mvneta_rxq_handle_get(struct mvneta_port *pp,
975 return &pp->rxqs[rxq];
979 /* Drop packets received by the RXQ and free buffers */
980 static void mvneta_rxq_drop_pkts(struct mvneta_port *pp,
981 struct mvneta_rx_queue *rxq)
985 rx_done = mvneta_rxq_busy_desc_num_get(pp, rxq);
987 mvneta_rxq_desc_num_update(pp, rxq, rx_done, rx_done);
990 /* Handle rxq fill: allocates rxq skbs; called when initializing a port */
991 static int mvneta_rxq_fill(struct mvneta_port *pp, struct mvneta_rx_queue *rxq,
996 for (i = 0; i < num; i++) {
999 /* U-Boot special: Fill in the rx buffer addresses */
1000 addr = buffer_loc.rx_buffers + (i * RX_BUFFER_SIZE);
1001 mvneta_rx_desc_fill(rxq->descs + i, addr, addr);
1004 /* Add this number of RX descriptors as non occupied (ready to
1007 mvneta_rxq_non_occup_desc_add(pp, rxq, i);
1012 /* Rx/Tx queue initialization/cleanup methods */
1014 /* Create a specified RX queue */
1015 static int mvneta_rxq_init(struct mvneta_port *pp,
1016 struct mvneta_rx_queue *rxq)
1019 rxq->size = pp->rx_ring_size;
1021 /* Allocate memory for RX descriptors */
1022 rxq->descs_phys = (dma_addr_t)rxq->descs;
1023 if (rxq->descs == NULL)
1026 WARN_ON(rxq->descs != PTR_ALIGN(rxq->descs, ARCH_DMA_MINALIGN));
1028 rxq->last_desc = rxq->size - 1;
1030 /* Set Rx descriptors queue starting address */
1031 mvreg_write(pp, MVNETA_RXQ_BASE_ADDR_REG(rxq->id), rxq->descs_phys);
1032 mvreg_write(pp, MVNETA_RXQ_SIZE_REG(rxq->id), rxq->size);
1034 /* Fill RXQ with buffers from RX pool */
1035 mvneta_rxq_buf_size_set(pp, rxq, RX_BUFFER_SIZE);
1036 mvneta_rxq_fill(pp, rxq, rxq->size);
1041 /* Cleanup Rx queue */
1042 static void mvneta_rxq_deinit(struct mvneta_port *pp,
1043 struct mvneta_rx_queue *rxq)
1045 mvneta_rxq_drop_pkts(pp, rxq);
1049 rxq->next_desc_to_proc = 0;
1050 rxq->descs_phys = 0;
1053 /* Create and initialize a tx queue */
1054 static int mvneta_txq_init(struct mvneta_port *pp,
1055 struct mvneta_tx_queue *txq)
1057 txq->size = pp->tx_ring_size;
1059 /* Allocate memory for TX descriptors */
1060 txq->descs_phys = (dma_addr_t)txq->descs;
1061 if (txq->descs == NULL)
1064 WARN_ON(txq->descs != PTR_ALIGN(txq->descs, ARCH_DMA_MINALIGN));
1066 txq->last_desc = txq->size - 1;
1068 /* Set maximum bandwidth for enabled TXQs */
1069 mvreg_write(pp, MVETH_TXQ_TOKEN_CFG_REG(txq->id), 0x03ffffff);
1070 mvreg_write(pp, MVETH_TXQ_TOKEN_COUNT_REG(txq->id), 0x3fffffff);
1072 /* Set Tx descriptors queue starting address */
1073 mvreg_write(pp, MVNETA_TXQ_BASE_ADDR_REG(txq->id), txq->descs_phys);
1074 mvreg_write(pp, MVNETA_TXQ_SIZE_REG(txq->id), txq->size);
1079 /* Free allocated resources when mvneta_txq_init() fails to allocate memory*/
1080 static void mvneta_txq_deinit(struct mvneta_port *pp,
1081 struct mvneta_tx_queue *txq)
1085 txq->next_desc_to_proc = 0;
1086 txq->descs_phys = 0;
1088 /* Set minimum bandwidth for disabled TXQs */
1089 mvreg_write(pp, MVETH_TXQ_TOKEN_CFG_REG(txq->id), 0);
1090 mvreg_write(pp, MVETH_TXQ_TOKEN_COUNT_REG(txq->id), 0);
1092 /* Set Tx descriptors queue starting address and size */
1093 mvreg_write(pp, MVNETA_TXQ_BASE_ADDR_REG(txq->id), 0);
1094 mvreg_write(pp, MVNETA_TXQ_SIZE_REG(txq->id), 0);
1097 /* Cleanup all Tx queues */
1098 static void mvneta_cleanup_txqs(struct mvneta_port *pp)
1102 for (queue = 0; queue < txq_number; queue++)
1103 mvneta_txq_deinit(pp, &pp->txqs[queue]);
1106 /* Cleanup all Rx queues */
1107 static void mvneta_cleanup_rxqs(struct mvneta_port *pp)
1111 for (queue = 0; queue < rxq_number; queue++)
1112 mvneta_rxq_deinit(pp, &pp->rxqs[queue]);
1116 /* Init all Rx queues */
1117 static int mvneta_setup_rxqs(struct mvneta_port *pp)
1121 for (queue = 0; queue < rxq_number; queue++) {
1122 int err = mvneta_rxq_init(pp, &pp->rxqs[queue]);
1124 netdev_err(pp->dev, "%s: can't create rxq=%d\n",
1126 mvneta_cleanup_rxqs(pp);
1134 /* Init all tx queues */
1135 static int mvneta_setup_txqs(struct mvneta_port *pp)
1139 for (queue = 0; queue < txq_number; queue++) {
1140 int err = mvneta_txq_init(pp, &pp->txqs[queue]);
1142 netdev_err(pp->dev, "%s: can't create txq=%d\n",
1144 mvneta_cleanup_txqs(pp);
1152 static void mvneta_start_dev(struct mvneta_port *pp)
1154 /* start the Rx/Tx activity */
1155 mvneta_port_enable(pp);
1158 static void mvneta_adjust_link(struct udevice *dev)
1160 struct mvneta_port *pp = dev_get_priv(dev);
1161 struct phy_device *phydev = pp->phydev;
1162 int status_change = 0;
1164 if (mvneta_port_is_fixed_link(pp)) {
1165 debug("Using fixed link, skip link adjust\n");
1170 if ((pp->speed != phydev->speed) ||
1171 (pp->duplex != phydev->duplex)) {
1174 val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
1175 val &= ~(MVNETA_GMAC_CONFIG_MII_SPEED |
1176 MVNETA_GMAC_CONFIG_GMII_SPEED |
1177 MVNETA_GMAC_CONFIG_FULL_DUPLEX |
1178 MVNETA_GMAC_AN_SPEED_EN |
1179 MVNETA_GMAC_AN_DUPLEX_EN);
1182 val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX;
1184 if (phydev->speed == SPEED_1000)
1185 val |= MVNETA_GMAC_CONFIG_GMII_SPEED;
1187 val |= MVNETA_GMAC_CONFIG_MII_SPEED;
1189 mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
1191 pp->duplex = phydev->duplex;
1192 pp->speed = phydev->speed;
1196 if (phydev->link != pp->link) {
1197 if (!phydev->link) {
1202 pp->link = phydev->link;
1206 if (status_change) {
1208 u32 val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
1209 val |= (MVNETA_GMAC_FORCE_LINK_PASS |
1210 MVNETA_GMAC_FORCE_LINK_DOWN);
1211 mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
1214 mvneta_port_down(pp);
1219 static int mvneta_open(struct udevice *dev)
1221 struct mvneta_port *pp = dev_get_priv(dev);
1224 ret = mvneta_setup_rxqs(pp);
1228 ret = mvneta_setup_txqs(pp);
1232 mvneta_adjust_link(dev);
1234 mvneta_start_dev(pp);
1240 static int mvneta_init2(struct mvneta_port *pp)
1245 mvneta_port_disable(pp);
1247 /* Set port default values */
1248 mvneta_defaults_set(pp);
1250 pp->txqs = kzalloc(txq_number * sizeof(struct mvneta_tx_queue),
1255 /* U-Boot special: use preallocated area */
1256 pp->txqs[0].descs = buffer_loc.tx_descs;
1258 /* Initialize TX descriptor rings */
1259 for (queue = 0; queue < txq_number; queue++) {
1260 struct mvneta_tx_queue *txq = &pp->txqs[queue];
1262 txq->size = pp->tx_ring_size;
1265 pp->rxqs = kzalloc(rxq_number * sizeof(struct mvneta_rx_queue),
1272 /* U-Boot special: use preallocated area */
1273 pp->rxqs[0].descs = buffer_loc.rx_descs;
1275 /* Create Rx descriptor rings */
1276 for (queue = 0; queue < rxq_number; queue++) {
1277 struct mvneta_rx_queue *rxq = &pp->rxqs[queue];
1279 rxq->size = pp->rx_ring_size;
1285 /* platform glue : initialize decoding windows */
1288 * Not like A380, in Armada3700, there are two layers of decode windows for GBE:
1289 * First layer is: GbE Address window that resides inside the GBE unit,
1290 * Second layer is: Fabric address window which is located in the NIC400
1292 * To simplify the address decode configuration for Armada3700, we bypass the
1293 * first layer of GBE decode window by setting the first window to 4GB.
1295 static void mvneta_bypass_mbus_windows(struct mvneta_port *pp)
1298 * Set window size to 4GB, to bypass GBE address decode, leave the
1299 * work to MBUS decode window
1301 mvreg_write(pp, MVNETA_WIN_SIZE(0), MVNETA_WIN_SIZE_MASK);
1303 /* Enable GBE address decode window 0 by set bit 0 to 0 */
1304 clrbits_le32(pp->base + MVNETA_BASE_ADDR_ENABLE,
1305 MVNETA_BASE_ADDR_ENABLE_BIT);
1307 /* Set GBE address decode window 0 to full Access (read or write) */
1308 setbits_le32(pp->base + MVNETA_PORT_ACCESS_PROTECT,
1309 MVNETA_PORT_ACCESS_PROTECT_WIN0_RW);
1312 static void mvneta_conf_mbus_windows(struct mvneta_port *pp)
1314 const struct mbus_dram_target_info *dram;
1319 dram = mvebu_mbus_dram_info();
1320 for (i = 0; i < 6; i++) {
1321 mvreg_write(pp, MVNETA_WIN_BASE(i), 0);
1322 mvreg_write(pp, MVNETA_WIN_SIZE(i), 0);
1325 mvreg_write(pp, MVNETA_WIN_REMAP(i), 0);
1331 for (i = 0; i < dram->num_cs; i++) {
1332 const struct mbus_dram_window *cs = dram->cs + i;
1333 mvreg_write(pp, MVNETA_WIN_BASE(i), (cs->base & 0xffff0000) |
1334 (cs->mbus_attr << 8) | dram->mbus_dram_target_id);
1336 mvreg_write(pp, MVNETA_WIN_SIZE(i),
1337 (cs->size - 1) & 0xffff0000);
1339 win_enable &= ~(1 << i);
1340 win_protect |= 3 << (2 * i);
1343 mvreg_write(pp, MVNETA_BASE_ADDR_ENABLE, win_enable);
1346 /* Power up the port */
1347 static int mvneta_port_power_up(struct mvneta_port *pp, int phy_mode)
1351 /* MAC Cause register should be cleared */
1352 mvreg_write(pp, MVNETA_UNIT_INTR_CAUSE, 0);
1354 ctrl = mvreg_read(pp, MVNETA_GMAC_CTRL_2);
1356 /* Even though it might look weird, when we're configured in
1357 * SGMII or QSGMII mode, the RGMII bit needs to be set.
1360 case PHY_INTERFACE_MODE_QSGMII:
1361 mvreg_write(pp, MVNETA_SERDES_CFG, MVNETA_QSGMII_SERDES_PROTO);
1362 ctrl |= MVNETA_GMAC2_PCS_ENABLE | MVNETA_GMAC2_PORT_RGMII;
1364 case PHY_INTERFACE_MODE_SGMII:
1365 mvreg_write(pp, MVNETA_SERDES_CFG, MVNETA_SGMII_SERDES_PROTO);
1366 ctrl |= MVNETA_GMAC2_PCS_ENABLE | MVNETA_GMAC2_PORT_RGMII;
1368 case PHY_INTERFACE_MODE_RGMII:
1369 case PHY_INTERFACE_MODE_RGMII_ID:
1370 ctrl |= MVNETA_GMAC2_PORT_RGMII;
1376 /* Cancel Port Reset */
1377 ctrl &= ~MVNETA_GMAC2_PORT_RESET;
1378 mvreg_write(pp, MVNETA_GMAC_CTRL_2, ctrl);
1380 while ((mvreg_read(pp, MVNETA_GMAC_CTRL_2) &
1381 MVNETA_GMAC2_PORT_RESET) != 0)
1387 /* Device initialization routine */
1388 static int mvneta_init(struct udevice *dev)
1390 struct eth_pdata *pdata = dev_get_platdata(dev);
1391 struct mvneta_port *pp = dev_get_priv(dev);
1394 pp->tx_ring_size = MVNETA_MAX_TXD;
1395 pp->rx_ring_size = MVNETA_MAX_RXD;
1397 err = mvneta_init2(pp);
1399 dev_err(&pdev->dev, "can't init eth hal\n");
1403 mvneta_mac_addr_set(pp, pdata->enetaddr, rxq_def);
1405 err = mvneta_port_power_up(pp, pp->phy_interface);
1407 dev_err(&pdev->dev, "can't power up port\n");
1411 /* Call open() now as it needs to be done before runing send() */
1417 /* U-Boot only functions follow here */
1419 /* SMI / MDIO functions */
1421 static int smi_wait_ready(struct mvneta_port *pp)
1423 u32 timeout = MVNETA_SMI_TIMEOUT;
1426 /* wait till the SMI is not busy */
1428 /* read smi register */
1429 smi_reg = mvreg_read(pp, MVNETA_SMI);
1430 if (timeout-- == 0) {
1431 printf("Error: SMI busy timeout\n");
1434 } while (smi_reg & MVNETA_SMI_BUSY);
1440 * mvneta_mdio_read - miiphy_read callback function.
1442 * Returns 16bit phy register value, or 0xffff on error
1444 static int mvneta_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
1446 struct mvneta_port *pp = bus->priv;
1450 /* check parameters */
1451 if (addr > MVNETA_PHY_ADDR_MASK) {
1452 printf("Error: Invalid PHY address %d\n", addr);
1456 if (reg > MVNETA_PHY_REG_MASK) {
1457 printf("Err: Invalid register offset %d\n", reg);
1461 /* wait till the SMI is not busy */
1462 if (smi_wait_ready(pp) < 0)
1465 /* fill the phy address and regiser offset and read opcode */
1466 smi_reg = (addr << MVNETA_SMI_DEV_ADDR_OFFS)
1467 | (reg << MVNETA_SMI_REG_ADDR_OFFS)
1468 | MVNETA_SMI_OPCODE_READ;
1470 /* write the smi register */
1471 mvreg_write(pp, MVNETA_SMI, smi_reg);
1473 /* wait till read value is ready */
1474 timeout = MVNETA_SMI_TIMEOUT;
1477 /* read smi register */
1478 smi_reg = mvreg_read(pp, MVNETA_SMI);
1479 if (timeout-- == 0) {
1480 printf("Err: SMI read ready timeout\n");
1483 } while (!(smi_reg & MVNETA_SMI_READ_VALID));
1485 /* Wait for the data to update in the SMI register */
1486 for (timeout = 0; timeout < MVNETA_SMI_TIMEOUT; timeout++)
1489 return mvreg_read(pp, MVNETA_SMI) & MVNETA_SMI_DATA_MASK;
1493 * mvneta_mdio_write - miiphy_write callback function.
1495 * Returns 0 if write succeed, -EINVAL on bad parameters
1498 static int mvneta_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
1501 struct mvneta_port *pp = bus->priv;
1504 /* check parameters */
1505 if (addr > MVNETA_PHY_ADDR_MASK) {
1506 printf("Error: Invalid PHY address %d\n", addr);
1510 if (reg > MVNETA_PHY_REG_MASK) {
1511 printf("Err: Invalid register offset %d\n", reg);
1515 /* wait till the SMI is not busy */
1516 if (smi_wait_ready(pp) < 0)
1519 /* fill the phy addr and reg offset and write opcode and data */
1520 smi_reg = value << MVNETA_SMI_DATA_OFFS;
1521 smi_reg |= (addr << MVNETA_SMI_DEV_ADDR_OFFS)
1522 | (reg << MVNETA_SMI_REG_ADDR_OFFS);
1523 smi_reg &= ~MVNETA_SMI_OPCODE_READ;
1525 /* write the smi register */
1526 mvreg_write(pp, MVNETA_SMI, smi_reg);
1531 static int mvneta_start(struct udevice *dev)
1533 struct mvneta_port *pp = dev_get_priv(dev);
1534 struct phy_device *phydev;
1536 mvneta_port_power_up(pp, pp->phy_interface);
1538 if (!pp->init || pp->link == 0) {
1539 if (mvneta_port_is_fixed_link(pp)) {
1546 val = MVNETA_GMAC_FORCE_LINK_UP |
1547 MVNETA_GMAC_IB_BYPASS_AN_EN |
1548 MVNETA_GMAC_SET_FC_EN |
1549 MVNETA_GMAC_ADVERT_FC_EN |
1550 MVNETA_GMAC_SAMPLE_TX_CFG_EN;
1553 val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX;
1555 if (pp->speed == SPEED_1000)
1556 val |= MVNETA_GMAC_CONFIG_GMII_SPEED;
1557 else if (pp->speed == SPEED_100)
1558 val |= MVNETA_GMAC_CONFIG_MII_SPEED;
1560 mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
1562 /* Set phy address of the port */
1563 mvreg_write(pp, MVNETA_PHY_ADDR, pp->phyaddr);
1565 phydev = phy_connect(pp->bus, pp->phyaddr, dev,
1568 printf("phy_connect failed\n");
1572 pp->phydev = phydev;
1574 phy_startup(phydev);
1575 if (!phydev->link) {
1576 printf("%s: No link.\n", phydev->dev->name);
1580 /* Full init on first call */
1587 /* Upon all following calls, this is enough */
1589 mvneta_port_enable(pp);
1594 static int mvneta_send(struct udevice *dev, void *packet, int length)
1596 struct mvneta_port *pp = dev_get_priv(dev);
1597 struct mvneta_tx_queue *txq = &pp->txqs[0];
1598 struct mvneta_tx_desc *tx_desc;
1602 /* Get a descriptor for the first part of the packet */
1603 tx_desc = mvneta_txq_next_desc_get(txq);
1605 tx_desc->buf_phys_addr = (u32)(uintptr_t)packet;
1606 tx_desc->data_size = length;
1607 flush_dcache_range((ulong)packet,
1608 (ulong)packet + ALIGN(length, PKTALIGN));
1610 /* First and Last descriptor */
1611 tx_desc->command = MVNETA_TX_L4_CSUM_NOT | MVNETA_TXD_FLZ_DESC;
1612 mvneta_txq_pend_desc_add(pp, txq, 1);
1614 /* Wait for packet to be sent (queue might help with speed here) */
1615 sent_desc = mvneta_txq_sent_desc_num_get(pp, txq);
1616 while (!sent_desc) {
1617 if (timeout++ > 10000) {
1618 printf("timeout: packet not sent\n");
1621 sent_desc = mvneta_txq_sent_desc_num_get(pp, txq);
1624 /* txDone has increased - hw sent packet */
1625 mvneta_txq_sent_desc_dec(pp, txq, sent_desc);
1630 static int mvneta_recv(struct udevice *dev, int flags, uchar **packetp)
1632 struct mvneta_port *pp = dev_get_priv(dev);
1634 struct mvneta_rx_queue *rxq;
1638 rxq = mvneta_rxq_handle_get(pp, rxq_def);
1639 rx_done = mvneta_rxq_busy_desc_num_get(pp, rxq);
1642 struct mvneta_rx_desc *rx_desc;
1643 unsigned char *data;
1647 * No cache invalidation needed here, since the desc's are
1648 * located in a uncached memory region
1650 rx_desc = mvneta_rxq_next_desc_get(rxq);
1652 rx_status = rx_desc->status;
1653 if (!mvneta_rxq_desc_is_first_last(rx_status) ||
1654 (rx_status & MVNETA_RXD_ERR_SUMMARY)) {
1655 mvneta_rx_error(pp, rx_desc);
1656 /* leave the descriptor untouched */
1660 /* 2 bytes for marvell header. 4 bytes for crc */
1661 rx_bytes = rx_desc->data_size - 6;
1663 /* give packet to stack - skip on first 2 bytes */
1664 data = (u8 *)(uintptr_t)rx_desc->buf_cookie + 2;
1666 * No cache invalidation needed here, since the rx_buffer's are
1667 * located in a uncached memory region
1672 * Only mark one descriptor as free
1673 * since only one was processed
1675 mvneta_rxq_desc_num_update(pp, rxq, 1, 1);
1681 static int mvneta_probe(struct udevice *dev)
1683 struct eth_pdata *pdata = dev_get_platdata(dev);
1684 struct mvneta_port *pp = dev_get_priv(dev);
1685 void *blob = (void *)gd->fdt_blob;
1686 int node = dev_of_offset(dev);
1687 struct mii_dev *bus;
1694 * Allocate buffer area for descs and rx_buffers. This is only
1695 * done once for all interfaces. As only one interface can
1696 * be active. Make this area DMA safe by disabling the D-cache
1698 if (!buffer_loc.tx_descs) {
1701 /* Align buffer area for descs and rx_buffers to 1MiB */
1702 bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE);
1703 flush_dcache_range((ulong)bd_space, (ulong)bd_space + BD_SPACE);
1704 mmu_set_region_dcache_behaviour((phys_addr_t)bd_space, BD_SPACE,
1706 buffer_loc.tx_descs = (struct mvneta_tx_desc *)bd_space;
1707 size = roundup(MVNETA_MAX_TXD * sizeof(struct mvneta_tx_desc),
1709 memset(buffer_loc.tx_descs, 0, size);
1710 buffer_loc.rx_descs = (struct mvneta_rx_desc *)
1711 ((phys_addr_t)bd_space + size);
1712 size += roundup(MVNETA_MAX_RXD * sizeof(struct mvneta_rx_desc),
1714 buffer_loc.rx_buffers = (phys_addr_t)(bd_space + size);
1717 pp->base = (void __iomem *)pdata->iobase;
1719 /* Configure MBUS address windows */
1720 if (device_is_compatible(dev, "marvell,armada-3700-neta"))
1721 mvneta_bypass_mbus_windows(pp);
1723 mvneta_conf_mbus_windows(pp);
1725 /* PHY interface is already decoded in mvneta_ofdata_to_platdata() */
1726 pp->phy_interface = pdata->phy_interface;
1728 /* fetch 'fixed-link' property from 'neta' node */
1729 fl_node = fdt_subnode_offset(blob, node, "fixed-link");
1730 if (fl_node != -FDT_ERR_NOTFOUND) {
1731 /* set phy_addr to invalid value for fixed link */
1732 pp->phyaddr = PHY_MAX_ADDR + 1;
1733 pp->duplex = fdtdec_get_bool(blob, fl_node, "full-duplex");
1734 pp->speed = fdtdec_get_int(blob, fl_node, "speed", 0);
1736 /* Now read phyaddr from DT */
1737 addr = fdtdec_get_int(blob, node, "phy", 0);
1738 addr = fdt_node_offset_by_phandle(blob, addr);
1739 pp->phyaddr = fdtdec_get_int(blob, addr, "reg", 0);
1744 printf("Failed to allocate MDIO bus\n");
1748 bus->read = mvneta_mdio_read;
1749 bus->write = mvneta_mdio_write;
1750 snprintf(bus->name, sizeof(bus->name), dev->name);
1751 bus->priv = (void *)pp;
1754 ret = mdio_register(bus);
1758 #if CONFIG_IS_ENABLED(DM_GPIO)
1759 gpio_request_by_name(dev, "phy-reset-gpios", 0,
1760 &pp->phy_reset_gpio, GPIOD_IS_OUT);
1762 if (dm_gpio_is_valid(&pp->phy_reset_gpio)) {
1763 dm_gpio_set_value(&pp->phy_reset_gpio, 1);
1765 dm_gpio_set_value(&pp->phy_reset_gpio, 0);
1769 return board_network_enable(bus);
1772 static void mvneta_stop(struct udevice *dev)
1774 struct mvneta_port *pp = dev_get_priv(dev);
1776 mvneta_port_down(pp);
1777 mvneta_port_disable(pp);
1780 static const struct eth_ops mvneta_ops = {
1781 .start = mvneta_start,
1782 .send = mvneta_send,
1783 .recv = mvneta_recv,
1784 .stop = mvneta_stop,
1785 .write_hwaddr = mvneta_write_hwaddr,
1788 static int mvneta_ofdata_to_platdata(struct udevice *dev)
1790 struct eth_pdata *pdata = dev_get_platdata(dev);
1791 const char *phy_mode;
1793 pdata->iobase = devfdt_get_addr(dev);
1795 /* Get phy-mode / phy_interface from DT */
1796 pdata->phy_interface = -1;
1797 phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode",
1800 pdata->phy_interface = phy_get_interface_by_name(phy_mode);
1801 if (pdata->phy_interface == -1) {
1802 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
1809 static const struct udevice_id mvneta_ids[] = {
1810 { .compatible = "marvell,armada-370-neta" },
1811 { .compatible = "marvell,armada-xp-neta" },
1812 { .compatible = "marvell,armada-3700-neta" },
1816 U_BOOT_DRIVER(mvneta) = {
1819 .of_match = mvneta_ids,
1820 .ofdata_to_platdata = mvneta_ofdata_to_platdata,
1821 .probe = mvneta_probe,
1823 .priv_auto_alloc_size = sizeof(struct mvneta_port),
1824 .platdata_auto_alloc_size = sizeof(struct eth_pdata),