1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * Copyright (c) 2018 Microsemi Corporation
9 #include <dm/of_access.h>
10 #include <dm/of_addr.h>
11 #include <fdt_support.h>
13 #include <linux/ioport.h>
18 #include "mscc_miim.h"
19 #include "mscc_xfer.h"
20 #include "mscc_mac_table.h"
23 #define PHY_CFG_ENA 0xF
24 #define PHY_CFG_COMMON_RST BIT(4)
25 #define PHY_CFG_RST (0xF << 5)
27 #define PHY_STAT_SUPERVISOR_COMPLETE BIT(0)
29 #define ANA_PORT_VLAN_CFG(x) (0x7000 + 0x100 * (x))
30 #define ANA_PORT_VLAN_CFG_AWARE_ENA BIT(20)
31 #define ANA_PORT_VLAN_CFG_POP_CNT(x) ((x) << 18)
32 #define ANA_PORT_PORT_CFG(x) (0x7070 + 0x100 * (x))
33 #define ANA_PORT_PORT_CFG_RECV_ENA BIT(6)
34 #define ANA_PGID(x) (0x8c00 + 4 * (x))
36 #define SYS_FRM_AGING 0x574
37 #define SYS_FRM_AGING_ENA BIT(20)
39 #define SYS_SYSTEM_RST_CFG 0x508
40 #define SYS_SYSTEM_RST_MEM_INIT BIT(0)
41 #define SYS_SYSTEM_RST_MEM_ENA BIT(1)
42 #define SYS_SYSTEM_RST_CORE_ENA BIT(2)
43 #define SYS_PORT_MODE(x) (0x514 + 0x4 * (x))
44 #define SYS_PORT_MODE_INCL_INJ_HDR(x) ((x) << 3)
45 #define SYS_PORT_MODE_INCL_INJ_HDR_M GENMASK(4, 3)
46 #define SYS_PORT_MODE_INCL_XTR_HDR(x) ((x) << 1)
47 #define SYS_PORT_MODE_INCL_XTR_HDR_M GENMASK(2, 1)
48 #define SYS_PAUSE_CFG(x) (0x608 + 0x4 * (x))
49 #define SYS_PAUSE_CFG_PAUSE_ENA BIT(0)
51 #define QSYS_SWITCH_PORT_MODE(x) (0x11234 + 0x4 * (x))
52 #define QSYS_SWITCH_PORT_MODE_PORT_ENA BIT(14)
53 #define QSYS_QMAP 0x112d8
54 #define QSYS_EGR_NO_SHARING 0x1129c
57 #define DEV_CLOCK_CFG 0x0
58 #define DEV_CLOCK_CFG_LINK_SPEED_1000 1
59 #define DEV_MAC_ENA_CFG 0x1c
60 #define DEV_MAC_ENA_CFG_RX_ENA BIT(4)
61 #define DEV_MAC_ENA_CFG_TX_ENA BIT(0)
63 #define DEV_MAC_IFG_CFG 0x30
64 #define DEV_MAC_IFG_CFG_TX_IFG(x) ((x) << 8)
65 #define DEV_MAC_IFG_CFG_RX_IFG2(x) ((x) << 4)
66 #define DEV_MAC_IFG_CFG_RX_IFG1(x) (x)
68 #define PCS1G_CFG 0x48
69 #define PCS1G_MODE_CFG_SGMII_MODE_ENA BIT(0)
70 #define PCS1G_MODE_CFG 0x4c
71 #define PCS1G_MODE_CFG_UNIDIR_MODE_ENA BIT(4)
72 #define PCS1G_MODE_CFG_SGMII_MODE_ENA BIT(0)
73 #define PCS1G_SD_CFG 0x50
74 #define PCS1G_ANEG_CFG 0x54
75 #define PCS1G_ANEG_CFG_ADV_ABILITY(x) ((x) << 16)
77 #define QS_XTR_GRP_CFG(x) (4 * (x))
78 #define QS_XTR_GRP_CFG_MODE(x) ((x) << 2)
79 #define QS_XTR_GRP_CFG_STATUS_WORD_POS BIT(1)
80 #define QS_XTR_GRP_CFG_BYTE_SWAP BIT(0)
81 #define QS_INJ_GRP_CFG(x) (0x24 + (x) * 4)
82 #define QS_INJ_GRP_CFG_MODE(x) ((x) << 2)
83 #define QS_INJ_GRP_CFG_BYTE_SWAP BIT(0)
85 #define IFH_INJ_BYPASS BIT(31)
86 #define IFH_TAG_TYPE_C 0
89 #define INTERNAL_PORT_MSK 0xF
92 #define PGID_BROADCAST 13
93 #define PGID_UNICAST 14
110 #define MAX_PORT (PORT3 - PORT0)
112 enum ocelot_mdio_target {
124 struct ocelot_private {
125 void __iomem *regs[TARGET_MAX];
127 struct mii_dev *bus[NUM_PHY];
128 struct phy_device *phydev;
137 u8 tx_adj_packetbuf[PKTSIZE_ALIGN + PKTALIGN];
141 static const unsigned long ocelot_regs_qs[] = {
142 [MSCC_QS_XTR_RD] = 0x8,
143 [MSCC_QS_XTR_FLUSH] = 0x18,
144 [MSCC_QS_XTR_DATA_PRESENT] = 0x1c,
145 [MSCC_QS_INJ_WR] = 0x2c,
146 [MSCC_QS_INJ_CTRL] = 0x34,
149 static const unsigned long ocelot_regs_ana_table[] = {
150 [MSCC_ANA_TABLES_MACHDATA] = 0x8b34,
151 [MSCC_ANA_TABLES_MACLDATA] = 0x8b38,
152 [MSCC_ANA_TABLES_MACACCESS] = 0x8b3c,
155 struct mscc_miim_dev miim[NUM_PHY];
157 static int mscc_miim_reset(struct mii_dev *bus)
159 struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv;
161 if (miim->phy_regs) {
162 writel(0, miim->phy_regs + PHY_CFG);
163 writel(PHY_CFG_RST | PHY_CFG_COMMON_RST
164 | PHY_CFG_ENA, miim->phy_regs + PHY_CFG);
171 /* For now only setup the internal mdio bus */
172 static struct mii_dev *ocelot_mdiobus_init(struct udevice *dev)
174 unsigned long phy_size[TARGET_MAX];
175 phys_addr_t phy_base[TARGET_MAX];
176 struct ofnode_phandle_args phandle;
177 ofnode eth_node, node, mdio_node;
188 /* gathered only the first mdio bus */
189 eth_node = dev_read_first_subnode(dev);
190 node = ofnode_first_subnode(eth_node);
191 ofnode_parse_phandle_with_args(node, "phy-handle", NULL, 0, 0,
193 mdio_node = ofnode_get_parent(phandle.node);
195 for (i = 0; i < TARGET_MDIO_MAX; i++) {
196 if (ofnode_read_resource(mdio_node, i, &res)) {
197 pr_err("%s: get OF resource failed\n", __func__);
200 faddr = cpu_to_fdt32(res.start);
201 phy_base[i] = ofnode_translate_address(mdio_node, &faddr);
202 phy_size[i] = res.end - res.start;
205 strcpy(bus->name, "miim-internal");
206 miim[INTERNAL].phy_regs = ioremap(phy_base[PHY], phy_size[PHY]);
207 miim[INTERNAL].regs = ioremap(phy_base[MIIM], phy_size[MIIM]);
208 bus->priv = &miim[INTERNAL];
209 bus->reset = mscc_miim_reset;
210 bus->read = mscc_miim_read;
211 bus->write = mscc_miim_write;
213 if (mdio_register(bus))
219 __weak void mscc_switch_reset(void)
223 static void ocelot_stop(struct udevice *dev)
225 struct ocelot_private *priv = dev_get_priv(dev);
229 for (i = 0; i < NUM_PHY; i++)
231 mscc_miim_reset(priv->bus[i]);
234 static void ocelot_cpu_capture_setup(struct ocelot_private *priv)
238 /* map the 8 CPU extraction queues to CPU port 11 */
239 writel(0, priv->regs[QSYS] + QSYS_QMAP);
241 for (i = 0; i <= 1; i++) {
243 * Do byte-swap and expect status after last data word
244 * Extraction: Mode: manual extraction) | Byte_swap
246 writel(QS_XTR_GRP_CFG_MODE(1) | QS_XTR_GRP_CFG_BYTE_SWAP,
247 priv->regs[QS] + QS_XTR_GRP_CFG(i));
249 * Injection: Mode: manual extraction | Byte_swap
251 writel(QS_INJ_GRP_CFG_MODE(1) | QS_INJ_GRP_CFG_BYTE_SWAP,
252 priv->regs[QS] + QS_INJ_GRP_CFG(i));
255 for (i = 0; i <= 1; i++)
256 /* Enable IFH insertion/parsing on CPU ports */
257 writel(SYS_PORT_MODE_INCL_INJ_HDR(1) |
258 SYS_PORT_MODE_INCL_XTR_HDR(1),
259 priv->regs[SYS] + SYS_PORT_MODE(CPU_PORT + i));
261 * Setup the CPU port as VLAN aware to support switching frames
264 writel(ANA_PORT_VLAN_CFG_AWARE_ENA | ANA_PORT_VLAN_CFG_POP_CNT(1) |
265 MAC_VID, priv->regs[ANA] + ANA_PORT_VLAN_CFG(CPU_PORT));
267 /* Disable learning (only RECV_ENA must be set) */
268 writel(ANA_PORT_PORT_CFG_RECV_ENA,
269 priv->regs[ANA] + ANA_PORT_PORT_CFG(CPU_PORT));
271 /* Enable switching to/from cpu port */
272 setbits_le32(priv->regs[QSYS] + QSYS_SWITCH_PORT_MODE(CPU_PORT),
273 QSYS_SWITCH_PORT_MODE_PORT_ENA);
275 /* No pause on CPU port - not needed (off by default) */
276 clrbits_le32(priv->regs[SYS] + SYS_PAUSE_CFG(CPU_PORT),
277 SYS_PAUSE_CFG_PAUSE_ENA);
279 setbits_le32(priv->regs[QSYS] + QSYS_EGR_NO_SHARING, BIT(CPU_PORT));
282 static void ocelot_port_init(struct ocelot_private *priv, int port)
284 void __iomem *regs = priv->regs[port];
287 writel(PCS1G_MODE_CFG_SGMII_MODE_ENA, regs + PCS1G_CFG);
289 /* Disable Signal Detect */
290 writel(0, regs + PCS1G_SD_CFG);
292 /* Enable MAC RX and TX */
293 writel(DEV_MAC_ENA_CFG_RX_ENA | DEV_MAC_ENA_CFG_TX_ENA,
294 regs + DEV_MAC_ENA_CFG);
296 /* Clear sgmii_mode_ena */
297 writel(0, regs + PCS1G_MODE_CFG);
300 * Clear sw_resolve_ena(bit 0) and set adv_ability to
301 * something meaningful just in case
303 writel(PCS1G_ANEG_CFG_ADV_ABILITY(0x20), regs + PCS1G_ANEG_CFG);
305 /* Set MAC IFG Gaps */
306 writel(DEV_MAC_IFG_CFG_TX_IFG(5) | DEV_MAC_IFG_CFG_RX_IFG1(5) |
307 DEV_MAC_IFG_CFG_RX_IFG2(1), regs + DEV_MAC_IFG_CFG);
309 /* Set link speed and release all resets */
310 writel(DEV_CLOCK_CFG_LINK_SPEED_1000, regs + DEV_CLOCK_CFG);
312 /* Make VLAN aware for CPU traffic */
313 writel(ANA_PORT_VLAN_CFG_AWARE_ENA | ANA_PORT_VLAN_CFG_POP_CNT(1) |
314 MAC_VID, priv->regs[ANA] + ANA_PORT_VLAN_CFG(port - PORT0));
316 /* Enable the port in the core */
317 setbits_le32(priv->regs[QSYS] + QSYS_SWITCH_PORT_MODE(port - PORT0),
318 QSYS_SWITCH_PORT_MODE_PORT_ENA);
321 static int ocelot_switch_init(struct ocelot_private *priv)
323 /* Reset switch & memories */
324 writel(SYS_SYSTEM_RST_MEM_ENA | SYS_SYSTEM_RST_MEM_INIT,
325 priv->regs[SYS] + SYS_SYSTEM_RST_CFG);
327 /* Wait to complete */
328 if (wait_for_bit_le32(priv->regs[SYS] + SYS_SYSTEM_RST_CFG,
329 SYS_SYSTEM_RST_MEM_INIT, false, 2000, false)) {
330 pr_err("Timeout in memory reset\n");
334 /* Enable switch core */
335 setbits_le32(priv->regs[SYS] + SYS_SYSTEM_RST_CFG,
336 SYS_SYSTEM_RST_CORE_ENA);
341 static int ocelot_initialize(struct ocelot_private *priv)
345 /* Initialize switch memories, enable core */
346 ret = ocelot_switch_init(priv);
350 * Disable port-to-port by switching
351 * Put fron ports in "port isolation modes" - i.e. they cant send
352 * to other ports - via the PGID sorce masks.
354 for (i = 0; i <= MAX_PORT; i++)
355 writel(0, priv->regs[ANA] + ANA_PGID(PGID_SRC + i));
358 mscc_flush(priv->regs[QS], ocelot_regs_qs);
360 /* Setup frame ageing - "2 sec" - The unit is 6.5us on Ocelot */
361 writel(SYS_FRM_AGING_ENA | (20000000 / 65),
362 priv->regs[SYS] + SYS_FRM_AGING);
364 for (i = PORT0; i <= PORT3; i++)
365 ocelot_port_init(priv, i);
367 ocelot_cpu_capture_setup(priv);
369 debug("Ports enabled\n");
374 static int ocelot_write_hwaddr(struct udevice *dev)
376 struct ocelot_private *priv = dev_get_priv(dev);
377 struct eth_pdata *pdata = dev_get_platdata(dev);
379 mscc_mac_table_add(priv->regs[ANA], ocelot_regs_ana_table,
380 pdata->enetaddr, PGID_UNICAST);
382 writel(BIT(CPU_PORT), priv->regs[ANA] + ANA_PGID(PGID_UNICAST));
387 static int ocelot_start(struct udevice *dev)
389 struct ocelot_private *priv = dev_get_priv(dev);
390 struct eth_pdata *pdata = dev_get_platdata(dev);
391 const unsigned char mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff,
395 ret = ocelot_initialize(priv);
399 /* Set MAC address tables entries for CPU redirection */
400 mscc_mac_table_add(priv->regs[ANA], ocelot_regs_ana_table, mac,
403 writel(BIT(CPU_PORT) | INTERNAL_PORT_MSK,
404 priv->regs[ANA] + ANA_PGID(PGID_BROADCAST));
406 /* It should be setup latter in ocelot_write_hwaddr */
407 mscc_mac_table_add(priv->regs[ANA], ocelot_regs_ana_table,
408 pdata->enetaddr, PGID_UNICAST);
410 writel(BIT(CPU_PORT), priv->regs[ANA] + ANA_PGID(PGID_UNICAST));
415 static int ocelot_send(struct udevice *dev, void *packet, int length)
417 struct ocelot_private *priv = dev_get_priv(dev);
419 int port = BIT(0); /* use port 0 */
423 * Generate the IFH for frame injection
425 * The IFH is a 128bit-value
426 * bit 127: bypass the analyzer processing
427 * bit 56-67: destination mask
428 * bit 28-29: pop_cnt: 3 disables all rewriting of the frame
429 * bit 20-27: cpu extraction queue mask
430 * bit 16: tag type 0: C-tag, 1: S-tag
433 ifh[0] = IFH_INJ_BYPASS;
434 ifh[1] = (0xf00 & port) >> 8;
435 ifh[2] = (0xff & port) << 24;
436 ifh[3] = (IFH_TAG_TYPE_C << 16);
438 return mscc_send(priv->regs[QS], ocelot_regs_qs,
439 ifh, IFH_LEN, buf, length);
442 static int ocelot_recv(struct udevice *dev, int flags, uchar **packetp)
444 struct ocelot_private *priv = dev_get_priv(dev);
445 u32 *rxbuf = (u32 *)net_rx_packets[0];
448 byte_cnt = mscc_recv(priv->regs[QS], ocelot_regs_qs, rxbuf, IFH_LEN,
451 *packetp = net_rx_packets[0];
456 static int ocelot_probe(struct udevice *dev)
458 struct ocelot_private *priv = dev_get_priv(dev);
462 enum ocelot_target id;
477 for (i = 0; i < ARRAY_SIZE(reg); i++) {
478 priv->regs[reg[i].id] = dev_remap_addr_name(dev, reg[i].name);
479 if (!priv->regs[reg[i].id]) {
481 ("Error %d: can't get regs base addresses for %s\n",
487 priv->bus[INTERNAL] = ocelot_mdiobus_init(dev);
489 for (i = 0; i < 4; i++) {
490 phy_connect(priv->bus[INTERNAL], i, dev,
491 PHY_INTERFACE_MODE_NONE);
497 static int ocelot_remove(struct udevice *dev)
499 struct ocelot_private *priv = dev_get_priv(dev);
502 for (i = 0; i < NUM_PHY; i++) {
503 mdio_unregister(priv->bus[i]);
504 mdio_free(priv->bus[i]);
510 static const struct eth_ops ocelot_ops = {
511 .start = ocelot_start,
515 .write_hwaddr = ocelot_write_hwaddr,
518 static const struct udevice_id mscc_ocelot_ids[] = {
519 {.compatible = "mscc,vsc7514-switch"},
523 U_BOOT_DRIVER(ocelot) = {
524 .name = "ocelot-switch",
526 .of_match = mscc_ocelot_ids,
527 .probe = ocelot_probe,
528 .remove = ocelot_remove,
530 .priv_auto_alloc_size = sizeof(struct ocelot_private),
531 .platdata_auto_alloc_size = sizeof(struct eth_pdata),