2 * (C) Copyright 2011 Michal Simek
4 * Michal SIMEK <monstr@monstr.eu>
6 * Based on Xilinx gmac driver:
7 * (C) Copyright 2011 Xilinx
9 * SPDX-License-Identifier: GPL-2.0+
24 #include <asm/system.h>
25 #include <asm/arch/hardware.h>
26 #include <asm/arch/sys_proto.h>
27 #include <linux/errno.h>
29 DECLARE_GLOBAL_DATA_PTR
;
31 /* Bit/mask specification */
32 #define ZYNQ_GEM_PHYMNTNC_OP_MASK 0x40020000 /* operation mask bits */
33 #define ZYNQ_GEM_PHYMNTNC_OP_R_MASK 0x20000000 /* read operation */
34 #define ZYNQ_GEM_PHYMNTNC_OP_W_MASK 0x10000000 /* write operation */
35 #define ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK 23 /* Shift bits for PHYAD */
36 #define ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK 18 /* Shift bits for PHREG */
38 #define ZYNQ_GEM_RXBUF_EOF_MASK 0x00008000 /* End of frame. */
39 #define ZYNQ_GEM_RXBUF_SOF_MASK 0x00004000 /* Start of frame. */
40 #define ZYNQ_GEM_RXBUF_LEN_MASK 0x00003FFF /* Mask for length field */
42 #define ZYNQ_GEM_RXBUF_WRAP_MASK 0x00000002 /* Wrap bit, last BD */
43 #define ZYNQ_GEM_RXBUF_NEW_MASK 0x00000001 /* Used bit.. */
44 #define ZYNQ_GEM_RXBUF_ADD_MASK 0xFFFFFFFC /* Mask for address */
46 /* Wrap bit, last descriptor */
47 #define ZYNQ_GEM_TXBUF_WRAP_MASK 0x40000000
48 #define ZYNQ_GEM_TXBUF_LAST_MASK 0x00008000 /* Last buffer */
49 #define ZYNQ_GEM_TXBUF_USED_MASK 0x80000000 /* Used by Hw */
51 #define ZYNQ_GEM_NWCTRL_TXEN_MASK 0x00000008 /* Enable transmit */
52 #define ZYNQ_GEM_NWCTRL_RXEN_MASK 0x00000004 /* Enable receive */
53 #define ZYNQ_GEM_NWCTRL_MDEN_MASK 0x00000010 /* Enable MDIO port */
54 #define ZYNQ_GEM_NWCTRL_STARTTX_MASK 0x00000200 /* Start tx (tx_go) */
56 #define ZYNQ_GEM_NWCFG_SPEED100 0x000000001 /* 100 Mbps operation */
57 #define ZYNQ_GEM_NWCFG_SPEED1000 0x000000400 /* 1Gbps operation */
58 #define ZYNQ_GEM_NWCFG_FDEN 0x000000002 /* Full Duplex mode */
59 #define ZYNQ_GEM_NWCFG_FSREM 0x000020000 /* FCS removal */
60 #define ZYNQ_GEM_NWCFG_SGMII_ENBL 0x080000000 /* SGMII Enable */
61 #define ZYNQ_GEM_NWCFG_PCS_SEL 0x000000800 /* PCS select */
63 #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x000100000 /* Div pclk by 64, max 160MHz */
65 #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x0000c0000 /* Div pclk by 48, max 120MHz */
69 # define ZYNQ_GEM_DBUS_WIDTH (1 << 21) /* 64 bit bus */
71 # define ZYNQ_GEM_DBUS_WIDTH (0 << 21) /* 32 bit bus */
74 #define ZYNQ_GEM_NWCFG_INIT (ZYNQ_GEM_DBUS_WIDTH | \
75 ZYNQ_GEM_NWCFG_FDEN | \
76 ZYNQ_GEM_NWCFG_FSREM | \
77 ZYNQ_GEM_NWCFG_MDCCLKDIV)
79 #define ZYNQ_GEM_NWSR_MDIOIDLE_MASK 0x00000004 /* PHY management idle */
81 #define ZYNQ_GEM_DMACR_BLENGTH 0x00000004 /* INCR4 AHB bursts */
82 /* Use full configured addressable space (8 Kb) */
83 #define ZYNQ_GEM_DMACR_RXSIZE 0x00000300
84 /* Use full configured addressable space (4 Kb) */
85 #define ZYNQ_GEM_DMACR_TXSIZE 0x00000400
86 /* Set with binary 00011000 to use 1536 byte(1*max length frame/buffer) */
87 #define ZYNQ_GEM_DMACR_RXBUF 0x00180000
89 #define ZYNQ_GEM_DMACR_INIT (ZYNQ_GEM_DMACR_BLENGTH | \
90 ZYNQ_GEM_DMACR_RXSIZE | \
91 ZYNQ_GEM_DMACR_TXSIZE | \
94 #define ZYNQ_GEM_TSR_DONE 0x00000020 /* Tx done mask */
96 #define ZYNQ_GEM_PCS_CTL_ANEG_ENBL 0x1000
98 /* Use MII register 1 (MII status register) to detect PHY */
99 #define PHY_DETECT_REG 1
101 /* Mask used to verify certain PHY features (or register contents)
102 * in the register above:
103 * 0x1000: 10Mbps full duplex support
104 * 0x0800: 10Mbps half duplex support
105 * 0x0008: Auto-negotiation support
107 #define PHY_DETECT_MASK 0x1808
109 /* TX BD status masks */
110 #define ZYNQ_GEM_TXBUF_FRMLEN_MASK 0x000007ff
111 #define ZYNQ_GEM_TXBUF_EXHAUSTED 0x08000000
112 #define ZYNQ_GEM_TXBUF_UNDERRUN 0x10000000
114 /* Clock frequencies for different speeds */
115 #define ZYNQ_GEM_FREQUENCY_10 2500000UL
116 #define ZYNQ_GEM_FREQUENCY_100 25000000UL
117 #define ZYNQ_GEM_FREQUENCY_1000 125000000UL
119 /* Device registers */
120 struct zynq_gem_regs
{
121 u32 nwctrl
; /* 0x0 - Network Control reg */
122 u32 nwcfg
; /* 0x4 - Network Config reg */
123 u32 nwsr
; /* 0x8 - Network Status reg */
125 u32 dmacr
; /* 0x10 - DMA Control reg */
126 u32 txsr
; /* 0x14 - TX Status reg */
127 u32 rxqbase
; /* 0x18 - RX Q Base address reg */
128 u32 txqbase
; /* 0x1c - TX Q Base address reg */
129 u32 rxsr
; /* 0x20 - RX Status reg */
131 u32 idr
; /* 0x2c - Interrupt Disable reg */
133 u32 phymntnc
; /* 0x34 - Phy Maintaince reg */
135 u32 hashl
; /* 0x80 - Hash Low address reg */
136 u32 hashh
; /* 0x84 - Hash High address reg */
139 u32 laddr
[4][LADDR_HIGH
+ 1]; /* 0x8c - Specific1 addr low/high reg */
140 u32 match
[4]; /* 0xa8 - Type ID1 Match reg */
143 u32 stat
[STAT_SIZE
]; /* 0x100 - Octects transmitted Low reg */
147 u32 transmit_q1_ptr
; /* 0x440 - Transmit priority queue 1 */
149 u32 receive_q1_ptr
; /* 0x480 - Receive priority queue 1 */
154 u32 addr
; /* Next descriptor pointer */
159 /* Page table entries are set to 1MB, or multiples of 1MB
160 * (not < 1MB). driver uses less bd's so use 1MB bdspace.
162 #define BD_SPACE 0x100000
163 /* BD separation space */
164 #define BD_SEPRN_SPACE (RX_BUF * sizeof(struct emac_bd))
166 /* Setup the first free TX descriptor */
167 #define TX_FREE_DESC 2
169 /* Initialized, rxbd_current, rx_first_buf must be 0 after init */
170 struct zynq_gem_priv
{
171 struct emac_bd
*tx_bd
;
172 struct emac_bd
*rx_bd
;
179 struct zynq_gem_regs
*iobase
;
180 phy_interface_t interface
;
181 struct phy_device
*phydev
;
186 static inline int mdio_wait(struct zynq_gem_regs
*regs
)
190 /* Wait till MDIO interface is ready to accept a new transaction. */
192 if (readl(®s
->nwsr
) & ZYNQ_GEM_NWSR_MDIOIDLE_MASK
)
198 printf("%s: Timeout\n", __func__
);
205 static u32
phy_setup_op(struct zynq_gem_priv
*priv
, u32 phy_addr
, u32 regnum
,
209 struct zynq_gem_regs
*regs
= priv
->iobase
;
214 /* Construct mgtcr mask for the operation */
215 mgtcr
= ZYNQ_GEM_PHYMNTNC_OP_MASK
| op
|
216 (phy_addr
<< ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK
) |
217 (regnum
<< ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK
) | *data
;
219 /* Write mgtcr and wait for completion */
220 writel(mgtcr
, ®s
->phymntnc
);
225 if (op
== ZYNQ_GEM_PHYMNTNC_OP_R_MASK
)
226 *data
= readl(®s
->phymntnc
);
231 static u32
phyread(struct zynq_gem_priv
*priv
, u32 phy_addr
,
232 u32 regnum
, u16
*val
)
236 ret
= phy_setup_op(priv
, phy_addr
, regnum
,
237 ZYNQ_GEM_PHYMNTNC_OP_R_MASK
, val
);
240 debug("%s: phy_addr %d, regnum 0x%x, val 0x%x\n", __func__
,
241 phy_addr
, regnum
, *val
);
246 static u32
phywrite(struct zynq_gem_priv
*priv
, u32 phy_addr
,
247 u32 regnum
, u16 data
)
249 debug("%s: phy_addr %d, regnum 0x%x, data 0x%x\n", __func__
, phy_addr
,
252 return phy_setup_op(priv
, phy_addr
, regnum
,
253 ZYNQ_GEM_PHYMNTNC_OP_W_MASK
, &data
);
256 static int phy_detection(struct udevice
*dev
)
260 struct zynq_gem_priv
*priv
= dev
->priv
;
262 if (priv
->phyaddr
!= -1) {
263 phyread(priv
, priv
->phyaddr
, PHY_DETECT_REG
, &phyreg
);
264 if ((phyreg
!= 0xFFFF) &&
265 ((phyreg
& PHY_DETECT_MASK
) == PHY_DETECT_MASK
)) {
266 /* Found a valid PHY address */
267 debug("Default phy address %d is valid\n",
271 debug("PHY address is not setup correctly %d\n",
277 debug("detecting phy address\n");
278 if (priv
->phyaddr
== -1) {
279 /* detect the PHY address */
280 for (i
= 31; i
>= 0; i
--) {
281 phyread(priv
, i
, PHY_DETECT_REG
, &phyreg
);
282 if ((phyreg
!= 0xFFFF) &&
283 ((phyreg
& PHY_DETECT_MASK
) == PHY_DETECT_MASK
)) {
284 /* Found a valid PHY address */
286 debug("Found valid phy address, %d\n", i
);
291 printf("PHY is not detected\n");
295 static int zynq_gem_setup_mac(struct udevice
*dev
)
297 u32 i
, macaddrlow
, macaddrhigh
;
298 struct eth_pdata
*pdata
= dev_get_platdata(dev
);
299 struct zynq_gem_priv
*priv
= dev_get_priv(dev
);
300 struct zynq_gem_regs
*regs
= priv
->iobase
;
302 /* Set the MAC bits [31:0] in BOT */
303 macaddrlow
= pdata
->enetaddr
[0];
304 macaddrlow
|= pdata
->enetaddr
[1] << 8;
305 macaddrlow
|= pdata
->enetaddr
[2] << 16;
306 macaddrlow
|= pdata
->enetaddr
[3] << 24;
308 /* Set MAC bits [47:32] in TOP */
309 macaddrhigh
= pdata
->enetaddr
[4];
310 macaddrhigh
|= pdata
->enetaddr
[5] << 8;
312 for (i
= 0; i
< 4; i
++) {
313 writel(0, ®s
->laddr
[i
][LADDR_LOW
]);
314 writel(0, ®s
->laddr
[i
][LADDR_HIGH
]);
315 /* Do not use MATCHx register */
316 writel(0, ®s
->match
[i
]);
319 writel(macaddrlow
, ®s
->laddr
[0][LADDR_LOW
]);
320 writel(macaddrhigh
, ®s
->laddr
[0][LADDR_HIGH
]);
325 static int zynq_phy_init(struct udevice
*dev
)
328 struct zynq_gem_priv
*priv
= dev_get_priv(dev
);
329 struct zynq_gem_regs
*regs
= priv
->iobase
;
330 const u32 supported
= SUPPORTED_10baseT_Half
|
331 SUPPORTED_10baseT_Full
|
332 SUPPORTED_100baseT_Half
|
333 SUPPORTED_100baseT_Full
|
334 SUPPORTED_1000baseT_Half
|
335 SUPPORTED_1000baseT_Full
;
337 /* Enable only MDIO bus */
338 writel(ZYNQ_GEM_NWCTRL_MDEN_MASK
, ®s
->nwctrl
);
340 if (priv
->interface
!= PHY_INTERFACE_MODE_SGMII
) {
341 ret
= phy_detection(dev
);
343 printf("GEM PHY init failed\n");
348 priv
->phydev
= phy_connect(priv
->bus
, priv
->phyaddr
, dev
,
353 priv
->phydev
->supported
= supported
| ADVERTISED_Pause
|
354 ADVERTISED_Asym_Pause
;
355 priv
->phydev
->advertising
= priv
->phydev
->supported
;
357 if (priv
->phy_of_handle
> 0)
358 priv
->phydev
->dev
->of_offset
= priv
->phy_of_handle
;
360 return phy_config(priv
->phydev
);
363 static int zynq_gem_init(struct udevice
*dev
)
367 unsigned long clk_rate
= 0;
368 struct zynq_gem_priv
*priv
= dev_get_priv(dev
);
369 struct zynq_gem_regs
*regs
= priv
->iobase
;
370 struct emac_bd
*dummy_tx_bd
= &priv
->tx_bd
[TX_FREE_DESC
];
371 struct emac_bd
*dummy_rx_bd
= &priv
->tx_bd
[TX_FREE_DESC
+ 2];
374 /* Disable all interrupts */
375 writel(0xFFFFFFFF, ®s
->idr
);
377 /* Disable the receiver & transmitter */
378 writel(0, ®s
->nwctrl
);
379 writel(0, ®s
->txsr
);
380 writel(0, ®s
->rxsr
);
381 writel(0, ®s
->phymntnc
);
383 /* Clear the Hash registers for the mac address
384 * pointed by AddressPtr
386 writel(0x0, ®s
->hashl
);
387 /* Write bits [63:32] in TOP */
388 writel(0x0, ®s
->hashh
);
390 /* Clear all counters */
391 for (i
= 0; i
< STAT_SIZE
; i
++)
392 readl(®s
->stat
[i
]);
394 /* Setup RxBD space */
395 memset(priv
->rx_bd
, 0, RX_BUF
* sizeof(struct emac_bd
));
397 for (i
= 0; i
< RX_BUF
; i
++) {
398 priv
->rx_bd
[i
].status
= 0xF0000000;
399 priv
->rx_bd
[i
].addr
=
400 ((ulong
)(priv
->rxbuffers
) +
401 (i
* PKTSIZE_ALIGN
));
403 /* WRAP bit to last BD */
404 priv
->rx_bd
[--i
].addr
|= ZYNQ_GEM_RXBUF_WRAP_MASK
;
405 /* Write RxBDs to IP */
406 writel((ulong
)priv
->rx_bd
, ®s
->rxqbase
);
408 /* Setup for DMA Configuration register */
409 writel(ZYNQ_GEM_DMACR_INIT
, ®s
->dmacr
);
411 /* Setup for Network Control register, MDIO, Rx and Tx enable */
412 setbits_le32(®s
->nwctrl
, ZYNQ_GEM_NWCTRL_MDEN_MASK
);
414 /* Disable the second priority queue */
415 dummy_tx_bd
->addr
= 0;
416 dummy_tx_bd
->status
= ZYNQ_GEM_TXBUF_WRAP_MASK
|
417 ZYNQ_GEM_TXBUF_LAST_MASK
|
418 ZYNQ_GEM_TXBUF_USED_MASK
;
420 dummy_rx_bd
->addr
= ZYNQ_GEM_RXBUF_WRAP_MASK
|
421 ZYNQ_GEM_RXBUF_NEW_MASK
;
422 dummy_rx_bd
->status
= 0;
423 flush_dcache_range((ulong
)&dummy_tx_bd
, (ulong
)&dummy_tx_bd
+
424 sizeof(dummy_tx_bd
));
425 flush_dcache_range((ulong
)&dummy_rx_bd
, (ulong
)&dummy_rx_bd
+
426 sizeof(dummy_rx_bd
));
428 writel((ulong
)dummy_tx_bd
, ®s
->transmit_q1_ptr
);
429 writel((ulong
)dummy_rx_bd
, ®s
->receive_q1_ptr
);
434 ret
= phy_startup(priv
->phydev
);
438 if (!priv
->phydev
->link
) {
439 printf("%s: No link.\n", priv
->phydev
->dev
->name
);
443 nwconfig
= ZYNQ_GEM_NWCFG_INIT
;
445 if (priv
->interface
== PHY_INTERFACE_MODE_SGMII
) {
446 nwconfig
|= ZYNQ_GEM_NWCFG_SGMII_ENBL
|
447 ZYNQ_GEM_NWCFG_PCS_SEL
;
449 writel(readl(®s
->pcscntrl
) | ZYNQ_GEM_PCS_CTL_ANEG_ENBL
,
454 switch (priv
->phydev
->speed
) {
456 writel(nwconfig
| ZYNQ_GEM_NWCFG_SPEED1000
,
458 clk_rate
= ZYNQ_GEM_FREQUENCY_1000
;
461 writel(nwconfig
| ZYNQ_GEM_NWCFG_SPEED100
,
463 clk_rate
= ZYNQ_GEM_FREQUENCY_100
;
466 clk_rate
= ZYNQ_GEM_FREQUENCY_10
;
470 /* Change the rclk and clk only not using EMIO interface */
472 zynq_slcr_gem_clk_setup((ulong
)priv
->iobase
!=
473 ZYNQ_GEM_BASEADDR0
, clk_rate
);
475 setbits_le32(®s
->nwctrl
, ZYNQ_GEM_NWCTRL_RXEN_MASK
|
476 ZYNQ_GEM_NWCTRL_TXEN_MASK
);
481 static int zynq_gem_send(struct udevice
*dev
, void *ptr
, int len
)
484 struct zynq_gem_priv
*priv
= dev_get_priv(dev
);
485 struct zynq_gem_regs
*regs
= priv
->iobase
;
486 struct emac_bd
*current_bd
= &priv
->tx_bd
[1];
489 memset(priv
->tx_bd
, 0, sizeof(struct emac_bd
));
491 priv
->tx_bd
->addr
= (ulong
)ptr
;
492 priv
->tx_bd
->status
= (len
& ZYNQ_GEM_TXBUF_FRMLEN_MASK
) |
493 ZYNQ_GEM_TXBUF_LAST_MASK
;
494 /* Dummy descriptor to mark it as the last in descriptor chain */
495 current_bd
->addr
= 0x0;
496 current_bd
->status
= ZYNQ_GEM_TXBUF_WRAP_MASK
|
497 ZYNQ_GEM_TXBUF_LAST_MASK
|
498 ZYNQ_GEM_TXBUF_USED_MASK
;
501 writel((ulong
)priv
->tx_bd
, ®s
->txqbase
);
504 addr
&= ~(ARCH_DMA_MINALIGN
- 1);
505 size
= roundup(len
, ARCH_DMA_MINALIGN
);
506 flush_dcache_range(addr
, addr
+ size
);
508 addr
= (ulong
)priv
->rxbuffers
;
509 addr
&= ~(ARCH_DMA_MINALIGN
- 1);
510 size
= roundup((RX_BUF
* PKTSIZE_ALIGN
), ARCH_DMA_MINALIGN
);
511 flush_dcache_range(addr
, addr
+ size
);
515 setbits_le32(®s
->nwctrl
, ZYNQ_GEM_NWCTRL_STARTTX_MASK
);
517 /* Read TX BD status */
518 if (priv
->tx_bd
->status
& ZYNQ_GEM_TXBUF_EXHAUSTED
)
519 printf("TX buffers exhausted in mid frame\n");
521 return wait_for_bit(__func__
, ®s
->txsr
, ZYNQ_GEM_TSR_DONE
,
525 /* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */
526 static int zynq_gem_recv(struct udevice
*dev
, int flags
, uchar
**packetp
)
530 struct zynq_gem_priv
*priv
= dev_get_priv(dev
);
531 struct emac_bd
*current_bd
= &priv
->rx_bd
[priv
->rxbd_current
];
533 if (!(current_bd
->addr
& ZYNQ_GEM_RXBUF_NEW_MASK
))
536 if (!(current_bd
->status
&
537 (ZYNQ_GEM_RXBUF_SOF_MASK
| ZYNQ_GEM_RXBUF_EOF_MASK
))) {
538 printf("GEM: SOF or EOF not set for last buffer received!\n");
542 frame_len
= current_bd
->status
& ZYNQ_GEM_RXBUF_LEN_MASK
;
544 printf("%s: Zero size packet?\n", __func__
);
548 addr
= current_bd
->addr
& ZYNQ_GEM_RXBUF_ADD_MASK
;
549 addr
&= ~(ARCH_DMA_MINALIGN
- 1);
550 *packetp
= (uchar
*)(uintptr_t)addr
;
555 static int zynq_gem_free_pkt(struct udevice
*dev
, uchar
*packet
, int length
)
557 struct zynq_gem_priv
*priv
= dev_get_priv(dev
);
558 struct emac_bd
*current_bd
= &priv
->rx_bd
[priv
->rxbd_current
];
559 struct emac_bd
*first_bd
;
561 if (current_bd
->status
& ZYNQ_GEM_RXBUF_SOF_MASK
) {
562 priv
->rx_first_buf
= priv
->rxbd_current
;
564 current_bd
->addr
&= ~ZYNQ_GEM_RXBUF_NEW_MASK
;
565 current_bd
->status
= 0xF0000000; /* FIXME */
568 if (current_bd
->status
& ZYNQ_GEM_RXBUF_EOF_MASK
) {
569 first_bd
= &priv
->rx_bd
[priv
->rx_first_buf
];
570 first_bd
->addr
&= ~ZYNQ_GEM_RXBUF_NEW_MASK
;
571 first_bd
->status
= 0xF0000000;
574 if ((++priv
->rxbd_current
) >= RX_BUF
)
575 priv
->rxbd_current
= 0;
580 static void zynq_gem_halt(struct udevice
*dev
)
582 struct zynq_gem_priv
*priv
= dev_get_priv(dev
);
583 struct zynq_gem_regs
*regs
= priv
->iobase
;
585 clrsetbits_le32(®s
->nwctrl
, ZYNQ_GEM_NWCTRL_RXEN_MASK
|
586 ZYNQ_GEM_NWCTRL_TXEN_MASK
, 0);
589 __weak
int zynq_board_read_rom_ethaddr(unsigned char *ethaddr
)
594 static int zynq_gem_read_rom_mac(struct udevice
*dev
)
597 struct eth_pdata
*pdata
= dev_get_platdata(dev
);
599 retval
= zynq_board_read_rom_ethaddr(pdata
->enetaddr
);
600 if (retval
== -ENOSYS
)
606 static int zynq_gem_miiphy_read(struct mii_dev
*bus
, int addr
,
609 struct zynq_gem_priv
*priv
= bus
->priv
;
613 ret
= phyread(priv
, addr
, reg
, &val
);
614 debug("%s 0x%x, 0x%x, 0x%x, 0x%x\n", __func__
, addr
, reg
, val
, ret
);
618 static int zynq_gem_miiphy_write(struct mii_dev
*bus
, int addr
, int devad
,
621 struct zynq_gem_priv
*priv
= bus
->priv
;
623 debug("%s 0x%x, 0x%x, 0x%x\n", __func__
, addr
, reg
, value
);
624 return phywrite(priv
, addr
, reg
, value
);
627 static int zynq_gem_probe(struct udevice
*dev
)
630 struct zynq_gem_priv
*priv
= dev_get_priv(dev
);
633 /* Align rxbuffers to ARCH_DMA_MINALIGN */
634 priv
->rxbuffers
= memalign(ARCH_DMA_MINALIGN
, RX_BUF
* PKTSIZE_ALIGN
);
635 memset(priv
->rxbuffers
, 0, RX_BUF
* PKTSIZE_ALIGN
);
637 /* Align bd_space to MMU_SECTION_SHIFT */
638 bd_space
= memalign(1 << MMU_SECTION_SHIFT
, BD_SPACE
);
639 mmu_set_region_dcache_behaviour((phys_addr_t
)bd_space
,
640 BD_SPACE
, DCACHE_OFF
);
642 /* Initialize the bd spaces for tx and rx bd's */
643 priv
->tx_bd
= (struct emac_bd
*)bd_space
;
644 priv
->rx_bd
= (struct emac_bd
*)((ulong
)bd_space
+ BD_SEPRN_SPACE
);
646 priv
->bus
= mdio_alloc();
647 priv
->bus
->read
= zynq_gem_miiphy_read
;
648 priv
->bus
->write
= zynq_gem_miiphy_write
;
649 priv
->bus
->priv
= priv
;
650 strcpy(priv
->bus
->name
, "gem");
652 ret
= mdio_register(priv
->bus
);
656 return zynq_phy_init(dev
);
659 static int zynq_gem_remove(struct udevice
*dev
)
661 struct zynq_gem_priv
*priv
= dev_get_priv(dev
);
664 mdio_unregister(priv
->bus
);
665 mdio_free(priv
->bus
);
670 static const struct eth_ops zynq_gem_ops
= {
671 .start
= zynq_gem_init
,
672 .send
= zynq_gem_send
,
673 .recv
= zynq_gem_recv
,
674 .free_pkt
= zynq_gem_free_pkt
,
675 .stop
= zynq_gem_halt
,
676 .write_hwaddr
= zynq_gem_setup_mac
,
677 .read_rom_hwaddr
= zynq_gem_read_rom_mac
,
680 static int zynq_gem_ofdata_to_platdata(struct udevice
*dev
)
682 struct eth_pdata
*pdata
= dev_get_platdata(dev
);
683 struct zynq_gem_priv
*priv
= dev_get_priv(dev
);
684 const char *phy_mode
;
686 pdata
->iobase
= (phys_addr_t
)dev_get_addr(dev
);
687 priv
->iobase
= (struct zynq_gem_regs
*)pdata
->iobase
;
688 /* Hardcode for now */
692 priv
->phy_of_handle
= fdtdec_lookup_phandle(gd
->fdt_blob
,
693 dev
->of_offset
, "phy-handle");
694 if (priv
->phy_of_handle
> 0)
695 priv
->phyaddr
= fdtdec_get_int(gd
->fdt_blob
,
696 priv
->phy_of_handle
, "reg", -1);
698 phy_mode
= fdt_getprop(gd
->fdt_blob
, dev
->of_offset
, "phy-mode", NULL
);
700 pdata
->phy_interface
= phy_get_interface_by_name(phy_mode
);
701 if (pdata
->phy_interface
== -1) {
702 debug("%s: Invalid PHY interface '%s'\n", __func__
, phy_mode
);
705 priv
->interface
= pdata
->phy_interface
;
707 priv
->emio
= fdtdec_get_bool(gd
->fdt_blob
, dev
->of_offset
, "xlnx,emio");
709 printf("ZYNQ GEM: %lx, phyaddr %d, interface %s\n", (ulong
)priv
->iobase
,
710 priv
->phyaddr
, phy_string_for_interface(priv
->interface
));
715 static const struct udevice_id zynq_gem_ids
[] = {
716 { .compatible
= "cdns,zynqmp-gem" },
717 { .compatible
= "cdns,zynq-gem" },
718 { .compatible
= "cdns,gem" },
722 U_BOOT_DRIVER(zynq_gem
) = {
725 .of_match
= zynq_gem_ids
,
726 .ofdata_to_platdata
= zynq_gem_ofdata_to_platdata
,
727 .probe
= zynq_gem_probe
,
728 .remove
= zynq_gem_remove
,
729 .ops
= &zynq_gem_ops
,
730 .priv_auto_alloc_size
= sizeof(struct zynq_gem_priv
),
731 .platdata_auto_alloc_size
= sizeof(struct eth_pdata
),