| 1 | From 67d56859d24864af530506c76523f0fc3c5cb502 Mon Sep 17 00:00:00 2001 |
| 2 | From: Alison Wang <b18965@freescale.com> |
| 3 | Date: Thu, 4 Aug 2011 09:59:44 +0800 |
| 4 | Subject: [PATCH 20/52] Add dual FEC 1588 timer support |
| 5 | |
| 6 | Add Modelo dual FEC 1588 function with IXXXAT statck. |
| 7 | |
| 8 | Signed-off-by: Alison Wang <b18965@freescale.com> |
| 9 | --- |
| 10 | drivers/net/Kconfig | 6 + |
| 11 | drivers/net/Makefile | 3 + |
| 12 | drivers/net/fec.c | 153 ++++++++++++- |
| 13 | drivers/net/fec.h | 25 ++ |
| 14 | drivers/net/fec_1588.c | 626 ++++++++++++++++++++++++++++++++++++++++++++++++ |
| 15 | drivers/net/fec_1588.h | 195 +++++++++++++++ |
| 16 | 6 files changed, 1006 insertions(+), 2 deletions(-) |
| 17 | create mode 100644 drivers/net/fec_1588.c |
| 18 | create mode 100644 drivers/net/fec_1588.h |
| 19 | |
| 20 | --- a/drivers/net/Kconfig |
| 21 | +++ b/drivers/net/Kconfig |
| 22 | @@ -1958,6 +1958,12 @@ config FEC2 |
| 23 | Say Y here if you want to use the second built-in 10/100 Fast |
| 24 | ethernet controller on some Motorola ColdFire processors. |
| 25 | |
| 26 | +config FEC_1588 |
| 27 | + bool "Enable 1588 interface(on some ColdFire designs)" |
| 28 | + depends on M5441X && FEC |
| 29 | + help |
| 30 | + Say Y here if 1588 function is enabled. |
| 31 | + |
| 32 | config FEC_548x |
| 33 | tristate "MCF547x/MCF548x Fast Ethernet Controller support" |
| 34 | depends on M547X_8X |
| 35 | --- a/drivers/net/Makefile |
| 36 | +++ b/drivers/net/Makefile |
| 37 | @@ -123,6 +123,9 @@ obj-$(CONFIG_PCMCIA_PCNET) += 8390.o |
| 38 | obj-$(CONFIG_HP100) += hp100.o |
| 39 | obj-$(CONFIG_SMC9194) += smc9194.o |
| 40 | obj-$(CONFIG_FEC) += fec.o |
| 41 | +ifeq ($(CONFIG_FEC_1588), y) |
| 42 | +obj-$(CONFIG_FEC) += fec_1588.o |
| 43 | +endif |
| 44 | obj-$(CONFIG_FEC_548x) += fec_m547x.o |
| 45 | obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx.o |
| 46 | ifeq ($(CONFIG_FEC_MPC52xx_MDIO),y) |
| 47 | --- a/drivers/net/fec.c |
| 48 | +++ b/drivers/net/fec.c |
| 49 | @@ -53,6 +53,7 @@ |
| 50 | #endif |
| 51 | |
| 52 | #include "fec.h" |
| 53 | +#include "fec_1588.h" |
| 54 | |
| 55 | #if defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28) |
| 56 | #define FEC_ALIGNMENT 0xf |
| 57 | @@ -135,8 +136,15 @@ MODULE_PARM_DESC(macaddr, "FEC Ethernet |
| 58 | #define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */ |
| 59 | #define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */ |
| 60 | #define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */ |
| 61 | +#define FEC_ENET_TS_AVAIL ((uint)0x00010000) |
| 62 | +#define FEC_ENET_TS_TIMER ((uint)0x00008000) |
| 63 | |
| 64 | +#if defined(CONFIG_FEC_1588) |
| 65 | +#define FEC_DEFAULT_IMASK (FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII | \ |
| 66 | + FEC_ENET_TS_AVAIL | FEC_ENET_TS_TIMER) |
| 67 | +#else |
| 68 | #define FEC_DEFAULT_IMASK (FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII) |
| 69 | +#endif |
| 70 | |
| 71 | /* The FEC stores dest/src/type, data, and checksum for receive packets. |
| 72 | */ |
| 73 | @@ -209,6 +217,10 @@ struct fec_enet_private { |
| 74 | int link; |
| 75 | int full_duplex; |
| 76 | struct completion mdio_done; |
| 77 | +#ifdef CONFIG_FEC_1588 |
| 78 | + struct fec_ptp_private *ptp_priv; |
| 79 | + uint ptimer_present; |
| 80 | +#endif |
| 81 | }; |
| 82 | |
| 83 | static irqreturn_t fec_enet_interrupt(int irq, void * dev_id); |
| 84 | @@ -252,6 +264,9 @@ fec_enet_start_xmit(struct sk_buff *skb, |
| 85 | struct bufdesc *bdp; |
| 86 | void *bufaddr; |
| 87 | unsigned short status; |
| 88 | +#ifdef CONFIG_FEC_1588 |
| 89 | + unsigned long estatus; |
| 90 | +#endif |
| 91 | unsigned long flags; |
| 92 | |
| 93 | if (!fep->link) { |
| 94 | @@ -293,6 +308,17 @@ fec_enet_start_xmit(struct sk_buff *skb, |
| 95 | bufaddr = fep->tx_bounce[index]; |
| 96 | } |
| 97 | |
| 98 | +#ifdef CONFIG_FEC_1588 |
| 99 | + if (fep->ptimer_present) { |
| 100 | + if (fec_ptp_do_txstamp(skb)) |
| 101 | + estatus = BD_ENET_TX_TS; |
| 102 | + else |
| 103 | + estatus = 0; |
| 104 | + |
| 105 | + bdp->cbd_esc = (estatus | BD_ENET_TX_INT); |
| 106 | + bdp->cbd_bdu = 0; |
| 107 | + } |
| 108 | +#endif |
| 109 | /* |
| 110 | * Some design made an incorrect assumption on endian mode of |
| 111 | * the system that it's running on. As the result, driver has to |
| 112 | @@ -357,6 +383,9 @@ fec_enet_interrupt(int irq, void * dev_i |
| 113 | { |
| 114 | struct net_device *dev = dev_id; |
| 115 | struct fec_enet_private *fep = netdev_priv(dev); |
| 116 | +#ifdef CONFIG_FEC_1588 |
| 117 | + struct fec_ptp_private *fpp = fep->ptp_priv; |
| 118 | +#endif |
| 119 | uint int_events; |
| 120 | irqreturn_t ret = IRQ_NONE; |
| 121 | |
| 122 | @@ -364,6 +393,10 @@ fec_enet_interrupt(int irq, void * dev_i |
| 123 | int_events = readl(fep->hwp + FEC_IEVENT); |
| 124 | writel(int_events, fep->hwp + FEC_IEVENT); |
| 125 | |
| 126 | +#ifdef CONFIG_FEC_1588 |
| 127 | + if (__raw_readb(MCF_DTIM1_DTER) & MCF_DTIM_DTER_REF) |
| 128 | + __raw_writeb(MCF_DTIM_DTER_REF, MCF_DTIM1_DTER); |
| 129 | +#endif |
| 130 | if (int_events & FEC_ENET_RXF) { |
| 131 | ret = IRQ_HANDLED; |
| 132 | fec_enet_rx(dev); |
| 133 | @@ -378,6 +411,19 @@ fec_enet_interrupt(int irq, void * dev_i |
| 134 | fec_enet_tx(dev); |
| 135 | } |
| 136 | |
| 137 | +#ifdef CONFIG_FEC_1588 |
| 138 | + if (int_events & FEC_ENET_TS_AVAIL) { |
| 139 | + ret = IRQ_HANDLED; |
| 140 | + fec_ptp_store_txstamp(fep->ptp_priv); |
| 141 | + } |
| 142 | + |
| 143 | + if (int_events & FEC_ENET_TS_TIMER) { |
| 144 | + ret = IRQ_HANDLED; |
| 145 | + if (fep->ptimer_present) |
| 146 | + fpp->prtc++; |
| 147 | + } |
| 148 | +#endif |
| 149 | + |
| 150 | if (int_events & FEC_ENET_MII) { |
| 151 | ret = IRQ_HANDLED; |
| 152 | complete(&fep->mdio_done); |
| 153 | @@ -394,6 +440,9 @@ fec_enet_tx(struct net_device *dev) |
| 154 | struct fec_enet_private *fep; |
| 155 | struct bufdesc *bdp; |
| 156 | unsigned short status; |
| 157 | +#ifdef CONFIG_FEC_1588 |
| 158 | + unsigned long estatus; |
| 159 | +#endif |
| 160 | struct sk_buff *skb; |
| 161 | |
| 162 | fep = netdev_priv(dev); |
| 163 | @@ -437,6 +486,13 @@ fec_enet_tx(struct net_device *dev) |
| 164 | if (status & BD_ENET_TX_DEF) |
| 165 | dev->stats.collisions++; |
| 166 | |
| 167 | +#if defined(CONFIG_FEC_1588) |
| 168 | + if (fep->ptimer_present) { |
| 169 | + estatus = bdp->cbd_esc; |
| 170 | + if (estatus & BD_ENET_TX_TS) |
| 171 | + fec_ptp_store_txstamp(fep->ptp_priv); |
| 172 | + } |
| 173 | +#endif |
| 174 | /* Free the sk buffer associated with this last transmit */ |
| 175 | dev_kfree_skb_any(skb); |
| 176 | fep->tx_skbuff[fep->skb_dirty] = NULL; |
| 177 | @@ -470,6 +526,9 @@ static void |
| 178 | fec_enet_rx(struct net_device *dev) |
| 179 | { |
| 180 | struct fec_enet_private *fep = netdev_priv(dev); |
| 181 | +#ifdef CONFIG_FEC_1588 |
| 182 | + struct fec_ptp_private *fpp = fep->ptp_priv; |
| 183 | +#endif |
| 184 | const struct platform_device_id *id_entry = |
| 185 | platform_get_device_id(fep->pdev); |
| 186 | struct bufdesc *bdp; |
| 187 | @@ -554,6 +613,12 @@ fec_enet_rx(struct net_device *dev) |
| 188 | skb_put(skb, pkt_len - 4); /* Make room */ |
| 189 | skb_copy_to_linear_data(skb, data, pkt_len - 4); |
| 190 | skb->protocol = eth_type_trans(skb, dev); |
| 191 | + |
| 192 | +#ifdef CONFIG_FEC_1588 |
| 193 | + /* 1588 messeage TS handle */ |
| 194 | + if (fep->ptimer_present) |
| 195 | + fec_ptp_store_rxstamp(fpp, skb, bdp); |
| 196 | +#endif |
| 197 | netif_rx(skb); |
| 198 | } |
| 199 | |
| 200 | @@ -567,6 +632,11 @@ rx_processing_done: |
| 201 | status |= BD_ENET_RX_EMPTY; |
| 202 | bdp->cbd_sc = status; |
| 203 | |
| 204 | +#ifdef CONFIG_FEC_1588 |
| 205 | + bdp->cbd_esc = BD_ENET_RX_INT; |
| 206 | + bdp->cbd_prot = 0; |
| 207 | + bdp->cbd_bdu = 0; |
| 208 | +#endif |
| 209 | /* Update BD pointer to next entry */ |
| 210 | if (status & BD_ENET_RX_WRAP) |
| 211 | bdp = fep->rx_bd_base; |
| 212 | @@ -669,8 +739,11 @@ static void fec_enet_adjust_link(struct |
| 213 | fec_stop(dev); |
| 214 | |
| 215 | if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) |
| 216 | - writel(2, fep->hwp + FEC_ECNTRL); |
| 217 | - |
| 218 | +#ifdef CONFIG_FEC_1588 |
| 219 | + writel(0x00000012, fep->hwp + FEC_ECNTRL); |
| 220 | +#else |
| 221 | + writel(0x00000002, fep->hwp + FEC_ECNTRL); |
| 222 | +#endif |
| 223 | status_change = 1; |
| 224 | } |
| 225 | |
| 226 | @@ -983,6 +1056,10 @@ static int fec_enet_alloc_buffers(struct |
| 227 | bdp->cbd_bufaddr = dma_map_single(&dev->dev, skb->data, |
| 228 | FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE); |
| 229 | bdp->cbd_sc = BD_ENET_RX_EMPTY; |
| 230 | + |
| 231 | +#ifdef CONFIG_FEC_1588 |
| 232 | + bdp->cbd_esc = BD_ENET_RX_INT; |
| 233 | +#endif |
| 234 | bdp++; |
| 235 | } |
| 236 | |
| 237 | @@ -996,6 +1073,9 @@ static int fec_enet_alloc_buffers(struct |
| 238 | |
| 239 | bdp->cbd_sc = 0; |
| 240 | bdp->cbd_bufaddr = 0; |
| 241 | +#ifdef CONFIG_FEC_1588 |
| 242 | + bdp->cbd_esc = BD_ENET_TX_INT; |
| 243 | +#endif |
| 244 | bdp++; |
| 245 | } |
| 246 | |
| 247 | @@ -1256,8 +1336,12 @@ fec_restart(struct net_device *dev, int |
| 248 | writel(cpu_to_be32(temp_mac[1]), fep->hwp + FEC_ADDR_HIGH); |
| 249 | } |
| 250 | |
| 251 | +#ifdef CONFIG_FEC_1588 |
| 252 | + writel(0x7fff8000, fep->hwp + FEC_IEVENT); |
| 253 | +#else |
| 254 | /* Clear any outstanding interrupt. */ |
| 255 | writel(0xffc00000, fep->hwp + FEC_IEVENT); |
| 256 | +#endif |
| 257 | |
| 258 | /* Reset all multicast. */ |
| 259 | writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH); |
| 260 | @@ -1342,8 +1426,25 @@ fec_restart(struct net_device *dev, int |
| 261 | #endif |
| 262 | } |
| 263 | |
| 264 | +#ifdef CONFIG_FEC_1588 |
| 265 | + if (fep->ptimer_present) { |
| 266 | + int ret; |
| 267 | + /* Set Timer count */ |
| 268 | + ret = fec_ptp_start(fep->ptp_priv); |
| 269 | + if (ret) { |
| 270 | + fep->ptimer_present = 0; |
| 271 | + writel(2, fep->hwp + FEC_ECNTRL); |
| 272 | + } else { |
| 273 | + val = readl(fep->hwp + FEC_ECNTRL); |
| 274 | + val |= 0x00000012; |
| 275 | + writel(val, fep->hwp + FEC_ECNTRL); |
| 276 | + } |
| 277 | + } else |
| 278 | + writel(2, fep->hwp + FEC_ECNTRL); |
| 279 | +#else |
| 280 | /* And last, enable the transmit and receive processing */ |
| 281 | writel(2, fep->hwp + FEC_ECNTRL); |
| 282 | +#endif |
| 283 | writel(0, fep->hwp + FEC_R_DES_ACTIVE); |
| 284 | |
| 285 | /* Enable interrupts we wish to service */ |
| 286 | @@ -1367,6 +1468,10 @@ fec_stop(struct net_device *dev) |
| 287 | writel(1, fep->hwp + FEC_ECNTRL); |
| 288 | udelay(10); |
| 289 | writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); |
| 290 | +#ifdef CONFIG_FEC_1588 |
| 291 | + if (fep->ptimer_present) |
| 292 | + fec_ptp_stop(fep->ptp_priv); |
| 293 | +#endif |
| 294 | writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); |
| 295 | } |
| 296 | |
| 297 | @@ -1428,6 +1533,24 @@ fec_probe(struct platform_device *pdev) |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | +#ifdef CONFIG_FEC_1588 |
| 302 | + i = (pdev->id) ? (64 + 64 + 64 + 7) : (64 + 64 + 64); |
| 303 | + if (request_irq(i + 48, fec_enet_interrupt, IRQF_DISABLED, |
| 304 | + "1588 TS AVAIL", ndev) != 0) |
| 305 | + printk(KERN_ERR "FEC: Could not alloc FEC %x 1588 TS AVAIL " |
| 306 | + "IRQ(%d)!\n", pdev->id, i + 48); |
| 307 | + |
| 308 | + if (pdev->id == 0) { |
| 309 | + printk("setup TS timer interrupt through DMA timer1\n"); |
| 310 | + __raw_writew(MCF_DTIM_DTMR_RST_RST, MCF_DTIM1_DTMR); |
| 311 | + |
| 312 | + if (request_irq(64 + 33, fec_enet_interrupt, IRQF_DISABLED, |
| 313 | + "1588 TS TIMER", ndev) != 0) |
| 314 | + printk(KERN_ERR "FEC: Could not alloc FEC %x 1588 TS" |
| 315 | + " TIMER IRQ(%d)!\n", pdev->id, 64 + 33); |
| 316 | + } |
| 317 | +#endif |
| 318 | + |
| 319 | fep->clk = clk_get(&pdev->dev, "fec_clk"); |
| 320 | if (IS_ERR(fep->clk)) { |
| 321 | ret = PTR_ERR(fep->clk); |
| 322 | @@ -1443,6 +1566,20 @@ fec_probe(struct platform_device *pdev) |
| 323 | if (ret) |
| 324 | goto failed_mii_init; |
| 325 | |
| 326 | +#ifdef CONFIG_FEC_1588 |
| 327 | + fep->ptp_priv = kzalloc(sizeof(struct fec_ptp_private), |
| 328 | + GFP_KERNEL); |
| 329 | + if (fep->ptp_priv) { |
| 330 | + fep->ptp_priv->hwp = fep->hwp; |
| 331 | + ret = fec_ptp_init(fep->ptp_priv, pdev->id); |
| 332 | + if (ret) |
| 333 | + printk(KERN_ERR "IEEE1588: ptp-timer init failed\n"); |
| 334 | + else |
| 335 | + fep->ptimer_present = 1; |
| 336 | + } else |
| 337 | + printk(KERN_ERR "IEEE1588: failed to malloc memory\n"); |
| 338 | +#endif |
| 339 | + |
| 340 | /* Carrier starts down, phylib will bring it up */ |
| 341 | netif_carrier_off(ndev); |
| 342 | |
| 343 | @@ -1454,6 +1591,12 @@ fec_probe(struct platform_device *pdev) |
| 344 | |
| 345 | failed_register: |
| 346 | fec_enet_mii_remove(fep); |
| 347 | +#ifdef CONFIG_FEC_1588 |
| 348 | + if (fep->ptimer_present) |
| 349 | + fec_ptp_cleanup(fep->ptp_priv); |
| 350 | + |
| 351 | + kfree(fep->ptp_priv); |
| 352 | +#endif |
| 353 | failed_mii_init: |
| 354 | failed_init: |
| 355 | clk_disable(fep->clk); |
| 356 | @@ -1485,6 +1628,12 @@ fec_drv_remove(struct platform_device *p |
| 357 | clk_disable(fep->clk); |
| 358 | clk_put(fep->clk); |
| 359 | iounmap((void __iomem *)ndev->base_addr); |
| 360 | +#ifdef CONFIG_FEC_1588 |
| 361 | + if (fep->ptimer_present) |
| 362 | + fec_ptp_cleanup(fep->ptp_priv); |
| 363 | + |
| 364 | + kfree(fep->ptp_priv); |
| 365 | +#endif |
| 366 | unregister_netdev(ndev); |
| 367 | free_netdev(ndev); |
| 368 | return 0; |
| 369 | --- a/drivers/net/fec.h |
| 370 | +++ b/drivers/net/fec.h |
| 371 | @@ -50,6 +50,16 @@ |
| 372 | #define FEC_MIIGSK_CFGR 0x300 /* MIIGSK Configuration reg */ |
| 373 | #define FEC_MIIGSK_ENR 0x308 /* MIIGSK Enable reg */ |
| 374 | |
| 375 | +#if defined(CONFIG_FEC_1588) |
| 376 | +#define FEC_ATIME_CTRL 0x400 |
| 377 | +#define FEC_ATIME 0x404 |
| 378 | +#define FEC_ATIME_EVT_OFFSET 0x408 |
| 379 | +#define FEC_ATIME_EVT_PERIOD 0x40c |
| 380 | +#define FEC_ATIME_CORR 0x410 |
| 381 | +#define FEC_ATIME_INC 0x414 |
| 382 | +#define FEC_TS_TIMESTAMP 0x418 |
| 383 | +#endif |
| 384 | + |
| 385 | #else |
| 386 | |
| 387 | #define FEC_ECNTRL 0x000 /* Ethernet control reg */ |
| 388 | @@ -78,6 +88,9 @@ |
| 389 | |
| 390 | #endif /* CONFIG_M5272 */ |
| 391 | |
| 392 | +#if defined(CONFIG_FEC_1588) |
| 393 | +#define FEC_ENHANCED_MODE 1 |
| 394 | +#endif |
| 395 | |
| 396 | /* |
| 397 | * Define the buffer descriptor structure. |
| 398 | @@ -93,6 +106,14 @@ struct bufdesc { |
| 399 | unsigned short cbd_sc; /* Control and status info */ |
| 400 | unsigned short cbd_datlen; /* Data length */ |
| 401 | unsigned long cbd_bufaddr; /* Buffer address */ |
| 402 | + |
| 403 | +#ifdef FEC_ENHANCED_MODE |
| 404 | + unsigned long cbd_esc; |
| 405 | + unsigned long cbd_prot; |
| 406 | + unsigned long cbd_bdu; |
| 407 | + unsigned long ts; |
| 408 | + unsigned short res0[4]; |
| 409 | +#endif |
| 410 | }; |
| 411 | #endif |
| 412 | |
| 413 | @@ -128,6 +149,7 @@ struct bufdesc { |
| 414 | #define BD_ENET_RX_OV ((ushort)0x0002) |
| 415 | #define BD_ENET_RX_CL ((ushort)0x0001) |
| 416 | #define BD_ENET_RX_STATS ((ushort)0x013f) /* All status bits */ |
| 417 | +#define BD_ENET_RX_INT 0x00800000 |
| 418 | |
| 419 | /* Buffer descriptor control/status used by Ethernet transmit. |
| 420 | */ |
| 421 | @@ -146,6 +168,9 @@ struct bufdesc { |
| 422 | #define BD_ENET_TX_CSL ((ushort)0x0001) |
| 423 | #define BD_ENET_TX_STATS ((ushort)0x03ff) /* All status bits */ |
| 424 | |
| 425 | +#define BD_ENET_TX_TS 0x20000000 |
| 426 | +#define BD_ENET_TX_INT 0x40000000 |
| 427 | +#define BD_ENET_TX_BDU 0x80000000 |
| 428 | |
| 429 | /****************************************************************************/ |
| 430 | #endif /* FEC_H */ |
| 431 | --- /dev/null |
| 432 | +++ b/drivers/net/fec_1588.c |
| 433 | @@ -0,0 +1,626 @@ |
| 434 | +/* |
| 435 | + * drivers/net/fec_1588.c |
| 436 | + * |
| 437 | + * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved. |
| 438 | + * Copyright (C) 2009 IXXAT Automation, GmbH |
| 439 | + * |
| 440 | + * FEC Ethernet Driver -- IEEE 1588 interface functionality |
| 441 | + * |
| 442 | + * This program is free software; you can redistribute it and/or modify |
| 443 | + * it under the terms of the GNU General Public License as published by |
| 444 | + * the Free Software Foundation; either version 2 of the License, or |
| 445 | + * (at your option) any later version. |
| 446 | + * |
| 447 | + * This program is distributed in the hope that it will be useful, |
| 448 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 449 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 450 | + * GNU General Public License for more details. |
| 451 | + * |
| 452 | + * You should have received a copy of the GNU General Public License along |
| 453 | + * with this program; if not, write to the Free Software Foundation, Inc., |
| 454 | + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 455 | + * |
| 456 | + */ |
| 457 | + |
| 458 | +#include <linux/io.h> |
| 459 | +#include <linux/device.h> |
| 460 | +#include <linux/fs.h> |
| 461 | +#include <linux/vmalloc.h> |
| 462 | +#include <linux/spinlock.h> |
| 463 | +#include <linux/ip.h> |
| 464 | +#include <linux/udp.h> |
| 465 | +#include <asm/mcf5441x_ccm.h> |
| 466 | +#include <asm/mcf5441x_dtim.h> |
| 467 | +#include <asm/mcfsim.h> |
| 468 | +#include "fec_1588.h" |
| 469 | + |
| 470 | +static DECLARE_WAIT_QUEUE_HEAD(ptp_rx_ts_wait); |
| 471 | +#define PTP_GET_RX_TIMEOUT (HZ/10) |
| 472 | +#define COLDFIRE_DTIM1_INT (64+32+1) |
| 473 | + |
| 474 | +static struct fec_ptp_private *ptp_private[2]; |
| 475 | + |
| 476 | +static void init_DTIM1_for_1588(struct fec_ptp_private *priv) |
| 477 | +{ |
| 478 | + printk(KERN_INFO "Initializing DTIM1 for 1588 TS timer\n"); |
| 479 | + |
| 480 | + __raw_writew(MCF_DTIM_DTMR_RST_RST, MCF_DTIM1_DTMR); |
| 481 | + |
| 482 | + /*Enable 1588*/ |
| 483 | + |
| 484 | + __raw_writeb(MCF_DTIM_DTXMR_1588EN, MCF_DTIM1_DTXMR); |
| 485 | + |
| 486 | + /*Compare to the 1588 timerbase*/ |
| 487 | + __raw_writel(FEC_T_PERIOD_ONE_SEC - FEC_T_INC_40MHZ, MCF_DTIM1_DTRR); |
| 488 | + |
| 489 | + __raw_writeb(MCF_DTIM_DTER_REF, MCF_DTIM1_DTER); |
| 490 | + |
| 491 | + MCF_GPIO_PAR_TIMER = (MCF_GPIO_PAR_TIMER & MCF_GPIO_PAR_TIMER_T1IN_MASK) |
| 492 | + | MCF_GPIO_PAR_TIMER_T1IN_T1OUT; |
| 493 | +} |
| 494 | + |
| 495 | +static void start_DTIM1(void) |
| 496 | +{ |
| 497 | + __raw_writew(MCF_DTIM_DTMR_RST_EN | MCF_DTIM_DTMR_ORRI | |
| 498 | + MCF_DTIM_DTMR_OM, MCF_DTIM1_DTMR); |
| 499 | +} |
| 500 | + |
| 501 | +static void stop_DTIM1(void) |
| 502 | +{ |
| 503 | + __raw_writew(MCF_DTIM_DTMR_RST_RST, MCF_DTIM1_DTMR); |
| 504 | +} |
| 505 | + |
| 506 | +/* Alloc the ring resource */ |
| 507 | +static int fec_ptp_init_circ(struct circ_buf *ptp_buf) |
| 508 | +{ |
| 509 | + ptp_buf->buf = vmalloc(DEFAULT_PTP_RX_BUF_SZ * |
| 510 | + sizeof(struct fec_ptp_data_t)); |
| 511 | + |
| 512 | + if (!ptp_buf->buf) |
| 513 | + return 1; |
| 514 | + ptp_buf->head = 0; |
| 515 | + ptp_buf->tail = 0; |
| 516 | + |
| 517 | + return 0; |
| 518 | +} |
| 519 | + |
| 520 | +static inline int fec_ptp_calc_index(int size, int curr_index, int offset) |
| 521 | +{ |
| 522 | + return (curr_index + offset) % size; |
| 523 | +} |
| 524 | + |
| 525 | +static int fec_ptp_is_empty(struct circ_buf *buf) |
| 526 | +{ |
| 527 | + return (buf->head == buf->tail); |
| 528 | +} |
| 529 | + |
| 530 | +static int fec_ptp_nelems(struct circ_buf *buf) |
| 531 | +{ |
| 532 | + const int front = buf->head; |
| 533 | + const int end = buf->tail; |
| 534 | + const int size = DEFAULT_PTP_RX_BUF_SZ; |
| 535 | + int n_items; |
| 536 | + |
| 537 | + if (end > front) |
| 538 | + n_items = end - front; |
| 539 | + else if (end < front) |
| 540 | + n_items = size - (front - end); |
| 541 | + else |
| 542 | + n_items = 0; |
| 543 | + |
| 544 | + return n_items; |
| 545 | +} |
| 546 | + |
| 547 | +static int fec_ptp_is_full(struct circ_buf *buf) |
| 548 | +{ |
| 549 | + if (fec_ptp_nelems(buf) == |
| 550 | + (DEFAULT_PTP_RX_BUF_SZ - 1)) |
| 551 | + return 1; |
| 552 | + else |
| 553 | + return 0; |
| 554 | +} |
| 555 | + |
| 556 | +static int fec_ptp_insert(struct circ_buf *ptp_buf, |
| 557 | + struct fec_ptp_data_t *data, |
| 558 | + struct fec_ptp_private *priv) |
| 559 | +{ |
| 560 | + struct fec_ptp_data_t *tmp; |
| 561 | + |
| 562 | + if (fec_ptp_is_full(ptp_buf)) |
| 563 | + return 1; |
| 564 | + |
| 565 | + spin_lock(&priv->ptp_lock); |
| 566 | + tmp = (struct fec_ptp_data_t *)(ptp_buf->buf) + ptp_buf->tail; |
| 567 | + |
| 568 | + tmp->key = data->key; |
| 569 | + tmp->ts_time.sec = data->ts_time.sec; |
| 570 | + tmp->ts_time.nsec = data->ts_time.nsec; |
| 571 | + |
| 572 | + ptp_buf->tail = fec_ptp_calc_index(DEFAULT_PTP_RX_BUF_SZ, |
| 573 | + ptp_buf->tail, 1); |
| 574 | + spin_unlock(&priv->ptp_lock); |
| 575 | + |
| 576 | + return 0; |
| 577 | +} |
| 578 | + |
| 579 | +static int fec_ptp_find_and_remove(struct circ_buf *ptp_buf, |
| 580 | + int key, |
| 581 | + struct fec_ptp_data_t *data, |
| 582 | + struct fec_ptp_private *priv) |
| 583 | +{ |
| 584 | + int i; |
| 585 | + int size = DEFAULT_PTP_RX_BUF_SZ; |
| 586 | + int end = ptp_buf->tail; |
| 587 | + unsigned long flags; |
| 588 | + struct fec_ptp_data_t *tmp; |
| 589 | + |
| 590 | + if (fec_ptp_is_empty(ptp_buf)) |
| 591 | + return 1; |
| 592 | + |
| 593 | + i = ptp_buf->head; |
| 594 | + while (i != end) { |
| 595 | + tmp = (struct fec_ptp_data_t *)(ptp_buf->buf) + i; |
| 596 | + if (tmp->key == key) |
| 597 | + break; |
| 598 | + i = fec_ptp_calc_index(size, i, 1); |
| 599 | + } |
| 600 | + |
| 601 | + spin_lock_irqsave(&priv->ptp_lock, flags); |
| 602 | + if (i == end) { |
| 603 | + ptp_buf->head = end; |
| 604 | + spin_unlock_irqrestore(&priv->ptp_lock, flags); |
| 605 | + return 1; |
| 606 | + } |
| 607 | + |
| 608 | + data->ts_time.sec = tmp->ts_time.sec; |
| 609 | + data->ts_time.nsec = tmp->ts_time.nsec; |
| 610 | + |
| 611 | + ptp_buf->head = fec_ptp_calc_index(size, i, 1); |
| 612 | + spin_unlock_irqrestore(&priv->ptp_lock, flags); |
| 613 | + |
| 614 | + return 0; |
| 615 | +} |
| 616 | + |
| 617 | +/* 1588 Module intialization */ |
| 618 | +int fec_ptp_start(struct fec_ptp_private *priv) |
| 619 | +{ |
| 620 | + struct fec_ptp_private *fpp = priv; |
| 621 | + |
| 622 | + MCF_CCM_MISCCR3 = 0x0000; |
| 623 | + |
| 624 | + init_DTIM1_for_1588(priv); |
| 625 | + |
| 626 | + /* Select 1588 Timer source and enable module for starting Tmr Clock */ |
| 627 | + fec_writel(FEC_T_CTRL_RESTART, fpp->hwp + FEC_ATIME_CTRL); |
| 628 | + fec_writel(FEC_T_INC_40MHZ << FEC_T_INC_OFFSET, |
| 629 | + fpp->hwp + FEC_ATIME_INC); |
| 630 | + fec_writel(FEC_T_PERIOD_ONE_SEC, fpp->hwp + FEC_ATIME_EVT_PERIOD); |
| 631 | + /* start counter */ |
| 632 | + fec_writel(FEC_T_CTRL_PERIOD_RST | FEC_T_CTRL_ENABLE | |
| 633 | + FEC_T_CTRL_PINPER, fpp->hwp + FEC_ATIME_CTRL); |
| 634 | + |
| 635 | + start_DTIM1(); |
| 636 | + |
| 637 | + return 0; |
| 638 | +} |
| 639 | + |
| 640 | +/* Cleanup routine for 1588 module. |
| 641 | + * When PTP is disabled this routing is called */ |
| 642 | +void fec_ptp_stop(struct fec_ptp_private *priv) |
| 643 | +{ |
| 644 | + struct fec_ptp_private *fpp = priv; |
| 645 | + |
| 646 | + fec_writel(0, fpp->hwp + FEC_ATIME_CTRL); |
| 647 | + fec_writel(FEC_T_CTRL_RESTART, fpp->hwp + FEC_ATIME_CTRL); |
| 648 | + stop_DTIM1(); |
| 649 | +} |
| 650 | + |
| 651 | +static void fec_get_curr_cnt(struct fec_ptp_private *priv, |
| 652 | + struct ptp_rtc_time *curr_time) |
| 653 | +{ |
| 654 | + u32 tempval; |
| 655 | + |
| 656 | + fec_writel(FEC_T_CTRL_CAPTURE, priv->hwp + FEC_ATIME_CTRL); |
| 657 | + fec_writel(FEC_T_CTRL_CAPTURE, priv->hwp + FEC_ATIME_CTRL); |
| 658 | + curr_time->rtc_time.nsec = fec_readl(priv->hwp + FEC_ATIME); |
| 659 | + curr_time->rtc_time.sec = priv->prtc; |
| 660 | + |
| 661 | + fec_writel(FEC_T_CTRL_CAPTURE, priv->hwp + FEC_ATIME_CTRL); |
| 662 | + tempval = fec_readl(priv->hwp + FEC_ATIME); |
| 663 | + if (tempval < curr_time->rtc_time.nsec) { |
| 664 | + curr_time->rtc_time.nsec = tempval; |
| 665 | + curr_time->rtc_time.sec = priv->prtc; |
| 666 | + } |
| 667 | +} |
| 668 | + |
| 669 | +/* Set the 1588 timer counter registers */ |
| 670 | +static void fec_set_1588cnt(struct fec_ptp_private *priv, |
| 671 | + struct ptp_rtc_time *fec_time) |
| 672 | +{ |
| 673 | + u32 tempval; |
| 674 | + unsigned long flags; |
| 675 | + |
| 676 | + spin_lock_irqsave(&priv->cnt_lock, flags); |
| 677 | + |
| 678 | + priv->prtc = fec_time->rtc_time.sec; |
| 679 | + |
| 680 | + tempval = fec_time->rtc_time.nsec; |
| 681 | + fec_writel(tempval, priv->hwp + FEC_ATIME); |
| 682 | + spin_unlock_irqrestore(&priv->cnt_lock, flags); |
| 683 | +} |
| 684 | + |
| 685 | +/* Set the BD to ptp */ |
| 686 | +int fec_ptp_do_txstamp(struct sk_buff *skb) |
| 687 | +{ |
| 688 | + struct iphdr *iph; |
| 689 | + struct udphdr *udph; |
| 690 | + |
| 691 | + if (skb->len > 44) { |
| 692 | + /* Check if port is 319 for PTP Event, and check for UDP */ |
| 693 | + iph = ip_hdr(skb); |
| 694 | + if (iph == NULL || iph->protocol != FEC_PACKET_TYPE_UDP) |
| 695 | + return 0; |
| 696 | + |
| 697 | + udph = udp_hdr(skb); |
| 698 | + if (udph != NULL && ntohs(udph->source) == 319) |
| 699 | + return 1; |
| 700 | + } |
| 701 | + |
| 702 | + return 0; |
| 703 | +} |
| 704 | + |
| 705 | +void fec_ptp_store_txstamp(struct fec_ptp_private *priv) |
| 706 | +{ |
| 707 | + struct fec_ptp_private *fpp = priv; |
| 708 | + unsigned int reg; |
| 709 | + |
| 710 | + reg = fec_readl(fpp->hwp + FEC_TS_TIMESTAMP); |
| 711 | + fpp->txstamp.nsec = reg; |
| 712 | + fpp->txstamp.sec = fpp->prtc; |
| 713 | +} |
| 714 | + |
| 715 | +void fec_ptp_store_rxstamp(struct fec_ptp_private *priv, |
| 716 | + struct sk_buff *skb, |
| 717 | + struct bufdesc *bdp) |
| 718 | +{ |
| 719 | + int msg_type, seq_id, control; |
| 720 | + struct fec_ptp_data_t tmp_rx_time; |
| 721 | + struct fec_ptp_private *fpp = priv; |
| 722 | + struct iphdr *iph; |
| 723 | + struct udphdr *udph; |
| 724 | + |
| 725 | + /* Check for UDP, and Check if port is 319 for PTP Event */ |
| 726 | + iph = (struct iphdr *)(skb->data + FEC_PTP_IP_OFFS); |
| 727 | + if (iph->protocol != FEC_PACKET_TYPE_UDP) |
| 728 | + return; |
| 729 | + |
| 730 | + udph = (struct udphdr *)(skb->data + FEC_PTP_UDP_OFFS); |
| 731 | + if (ntohs(udph->source) != 319) |
| 732 | + return; |
| 733 | + |
| 734 | + seq_id = *((u16 *)(skb->data + FEC_PTP_SEQ_ID_OFFS)); |
| 735 | + control = *((u8 *)(skb->data + FEC_PTP_CTRL_OFFS)); |
| 736 | + |
| 737 | + tmp_rx_time.key = ntohs(seq_id); |
| 738 | + tmp_rx_time.ts_time.sec = fpp->prtc; |
| 739 | + tmp_rx_time.ts_time.nsec = bdp->ts; |
| 740 | + |
| 741 | + switch (control) { |
| 742 | + |
| 743 | + case PTP_MSG_SYNC: |
| 744 | + fec_ptp_insert(&(priv->rx_time_sync), &tmp_rx_time, priv); |
| 745 | + break; |
| 746 | + |
| 747 | + case PTP_MSG_DEL_REQ: |
| 748 | + fec_ptp_insert(&(priv->rx_time_del_req), &tmp_rx_time, priv); |
| 749 | + break; |
| 750 | + |
| 751 | + /* clear transportSpecific field*/ |
| 752 | + case PTP_MSG_ALL_OTHER: |
| 753 | + msg_type = (*((u8 *)(skb->data + |
| 754 | + FEC_PTP_MSG_TYPE_OFFS))) & 0x0F; |
| 755 | + switch (msg_type) { |
| 756 | + case PTP_MSG_P_DEL_REQ: |
| 757 | + fec_ptp_insert(&(priv->rx_time_pdel_req), |
| 758 | + &tmp_rx_time, priv); |
| 759 | + break; |
| 760 | + case PTP_MSG_P_DEL_RESP: |
| 761 | + fec_ptp_insert(&(priv->rx_time_pdel_resp), |
| 762 | + &tmp_rx_time, priv); |
| 763 | + break; |
| 764 | + default: |
| 765 | + break; |
| 766 | + } |
| 767 | + break; |
| 768 | + default: |
| 769 | + break; |
| 770 | + } |
| 771 | + |
| 772 | + wake_up_interruptible(&ptp_rx_ts_wait); |
| 773 | +} |
| 774 | + |
| 775 | +static void fec_get_tx_timestamp(struct fec_ptp_private *priv, |
| 776 | + struct ptp_time *tx_time) |
| 777 | +{ |
| 778 | + tx_time->sec = priv->txstamp.sec; |
| 779 | + tx_time->nsec = priv->txstamp.nsec; |
| 780 | +} |
| 781 | + |
| 782 | +static uint8_t fec_get_rx_time(struct fec_ptp_private *priv, |
| 783 | + struct ptp_ts_data *pts, |
| 784 | + struct ptp_time *rx_time) |
| 785 | +{ |
| 786 | + struct fec_ptp_data_t tmp; |
| 787 | + int key, flag; |
| 788 | + u8 mode; |
| 789 | + |
| 790 | + key = pts->seq_id; |
| 791 | + mode = pts->message_type; |
| 792 | + switch (mode) { |
| 793 | + case PTP_MSG_SYNC: |
| 794 | + flag = fec_ptp_find_and_remove(&(priv->rx_time_sync), |
| 795 | + key, &tmp, priv); |
| 796 | + break; |
| 797 | + case PTP_MSG_DEL_REQ: |
| 798 | + flag = fec_ptp_find_and_remove(&(priv->rx_time_del_req), |
| 799 | + key, &tmp, priv); |
| 800 | + break; |
| 801 | + |
| 802 | + case PTP_MSG_P_DEL_REQ: |
| 803 | + flag = fec_ptp_find_and_remove(&(priv->rx_time_pdel_req), |
| 804 | + key, &tmp, priv); |
| 805 | + break; |
| 806 | + case PTP_MSG_P_DEL_RESP: |
| 807 | + flag = fec_ptp_find_and_remove(&(priv->rx_time_pdel_resp), |
| 808 | + key, &tmp, priv); |
| 809 | + break; |
| 810 | + |
| 811 | + default: |
| 812 | + flag = 1; |
| 813 | + printk(KERN_ERR "ERROR\n"); |
| 814 | + break; |
| 815 | + } |
| 816 | + |
| 817 | + if (!flag) { |
| 818 | + rx_time->sec = tmp.ts_time.sec; |
| 819 | + rx_time->nsec = tmp.ts_time.nsec; |
| 820 | + return 0; |
| 821 | + } else { |
| 822 | + wait_event_interruptible_timeout(ptp_rx_ts_wait, 0, |
| 823 | + PTP_GET_RX_TIMEOUT); |
| 824 | + |
| 825 | + switch (mode) { |
| 826 | + case PTP_MSG_SYNC: |
| 827 | + flag = fec_ptp_find_and_remove(&(priv->rx_time_sync), |
| 828 | + key, &tmp, priv); |
| 829 | + break; |
| 830 | + case PTP_MSG_DEL_REQ: |
| 831 | + flag = fec_ptp_find_and_remove( |
| 832 | + &(priv->rx_time_del_req), key, &tmp, priv); |
| 833 | + break; |
| 834 | + case PTP_MSG_P_DEL_REQ: |
| 835 | + flag = fec_ptp_find_and_remove( |
| 836 | + &(priv->rx_time_pdel_req), key, &tmp, priv); |
| 837 | + break; |
| 838 | + case PTP_MSG_P_DEL_RESP: |
| 839 | + flag = fec_ptp_find_and_remove( |
| 840 | + &(priv->rx_time_pdel_resp), key, &tmp, priv); |
| 841 | + break; |
| 842 | + } |
| 843 | + |
| 844 | + if (flag == 0) { |
| 845 | + rx_time->sec = tmp.ts_time.sec; |
| 846 | + rx_time->nsec = tmp.ts_time.nsec; |
| 847 | + return 0; |
| 848 | + } |
| 849 | + |
| 850 | + return -1; |
| 851 | + } |
| 852 | +} |
| 853 | + |
| 854 | +static void fec_handle_ptpdrift( |
| 855 | + struct ptp_set_comp *comp, |
| 856 | + struct ptp_time_correct *ptc) |
| 857 | +{ |
| 858 | + u32 ndrift; |
| 859 | + u32 i; |
| 860 | + u32 tmp, tmp_ns, tmp_prid; |
| 861 | + u32 min_ns, min_prid, miss_ns; |
| 862 | + |
| 863 | + ndrift = comp->drift; |
| 864 | + if (ndrift == 0) { |
| 865 | + ptc->corr_inc = 0; |
| 866 | + ptc->corr_period = 0; |
| 867 | + return; |
| 868 | + } |
| 869 | + |
| 870 | + if (ndrift >= FEC_ATIME_40MHZ) { |
| 871 | + ptc->corr_inc = (u32)(ndrift / FEC_ATIME_40MHZ); |
| 872 | + ptc->corr_period = 1; |
| 873 | + return; |
| 874 | + } |
| 875 | + |
| 876 | + min_ns = 1; |
| 877 | + tmp = FEC_ATIME_40MHZ % ndrift; |
| 878 | + tmp_prid = (u32)(FEC_ATIME_40MHZ / ndrift); |
| 879 | + min_prid = tmp_prid; |
| 880 | + miss_ns = tmp / tmp_prid; |
| 881 | + for (i = 2; i <= FEC_T_INC_40MHZ; i++) { |
| 882 | + tmp = (FEC_ATIME_40MHZ * i) % ndrift; |
| 883 | + tmp_prid = (FEC_ATIME_40MHZ * i) / ndrift; |
| 884 | + tmp_ns = tmp / tmp_prid; |
| 885 | + if (tmp_ns <= 10) { |
| 886 | + min_ns = i; |
| 887 | + min_prid = tmp_prid; |
| 888 | + break; |
| 889 | + } |
| 890 | + |
| 891 | + if (tmp_ns < miss_ns) { |
| 892 | + min_ns = i; |
| 893 | + min_prid = tmp_prid; |
| 894 | + miss_ns = tmp_ns; |
| 895 | + } |
| 896 | + } |
| 897 | + |
| 898 | + ptc->corr_inc = min_ns; |
| 899 | + ptc->corr_period = min_prid; |
| 900 | +} |
| 901 | + |
| 902 | +static void fec_set_drift(struct fec_ptp_private *priv, |
| 903 | + struct ptp_set_comp *comp) |
| 904 | +{ |
| 905 | + struct ptp_time_correct tc; |
| 906 | + struct fec_ptp_private *fpp = priv; |
| 907 | + u32 tmp, corr_ns; |
| 908 | + |
| 909 | + fec_handle_ptpdrift(comp, &tc); |
| 910 | + if (tc.corr_inc == 0) |
| 911 | + return; |
| 912 | + |
| 913 | + if (comp->o_ops == TRUE) |
| 914 | + corr_ns = FEC_T_INC_40MHZ + tc.corr_inc; |
| 915 | + else |
| 916 | + corr_ns = FEC_T_INC_40MHZ - tc.corr_inc; |
| 917 | + |
| 918 | + tmp = fec_readl(fpp->hwp + FEC_ATIME_INC) & FEC_T_INC_MASK; |
| 919 | + tmp |= corr_ns << FEC_T_INC_CORR_OFFSET; |
| 920 | + fec_writel(tmp, fpp->hwp + FEC_ATIME_INC); |
| 921 | + |
| 922 | + fec_writel(tc.corr_period, fpp->hwp + FEC_ATIME_CORR); |
| 923 | +} |
| 924 | + |
| 925 | +static int ptp_open(struct inode *inode, struct file *file) |
| 926 | +{ |
| 927 | + return 0; |
| 928 | +} |
| 929 | + |
| 930 | +static int ptp_release(struct inode *inode, struct file *file) |
| 931 | +{ |
| 932 | + return 0; |
| 933 | +} |
| 934 | + |
| 935 | +static long ptp_unlocked_ioctl( |
| 936 | + struct file *file, |
| 937 | + unsigned int cmd, |
| 938 | + unsigned long arg) |
| 939 | +{ |
| 940 | + struct ptp_rtc_time *cnt; |
| 941 | + struct ptp_rtc_time curr_time; |
| 942 | + struct ptp_time rx_time, tx_time; |
| 943 | + struct ptp_ts_data *p_ts; |
| 944 | + struct ptp_set_comp *p_comp; |
| 945 | + struct fec_ptp_private *priv; |
| 946 | + struct inode *inode = file->f_mapping->host; |
| 947 | + unsigned int minor = MINOR(inode->i_rdev); |
| 948 | + long retval = 0; |
| 949 | + |
| 950 | + priv = (struct fec_ptp_private *) ptp_private[minor]; |
| 951 | + switch (cmd) { |
| 952 | + case PTP_GET_RX_TIMESTAMP: |
| 953 | + p_ts = (struct ptp_ts_data *)arg; |
| 954 | + retval = fec_get_rx_time(priv, p_ts, &rx_time); |
| 955 | + if (retval == 0) |
| 956 | + copy_to_user((void __user *)(&(p_ts->ts)), &rx_time, |
| 957 | + sizeof(rx_time)); |
| 958 | + break; |
| 959 | + case PTP_GET_TX_TIMESTAMP: |
| 960 | + p_ts = (struct ptp_ts_data *)arg; |
| 961 | + fec_get_tx_timestamp(priv, &tx_time); |
| 962 | + copy_to_user((void __user *)(&(p_ts->ts)), &tx_time, |
| 963 | + sizeof(tx_time)); |
| 964 | + break; |
| 965 | + case PTP_GET_CURRENT_TIME: |
| 966 | + fec_get_curr_cnt(priv, &curr_time); |
| 967 | + copy_to_user((void __user *)arg, &curr_time, sizeof(curr_time)); |
| 968 | + break; |
| 969 | + case PTP_SET_RTC_TIME: |
| 970 | + cnt = (struct ptp_rtc_time *)arg; |
| 971 | + fec_set_1588cnt(priv, cnt); |
| 972 | + break; |
| 973 | + case PTP_FLUSH_TIMESTAMP: |
| 974 | + /* reset sync buffer */ |
| 975 | + priv->rx_time_sync.head = 0; |
| 976 | + priv->rx_time_sync.tail = 0; |
| 977 | + /* reset delay_req buffer */ |
| 978 | + priv->rx_time_del_req.head = 0; |
| 979 | + priv->rx_time_del_req.tail = 0; |
| 980 | + /* reset pdelay_req buffer */ |
| 981 | + priv->rx_time_pdel_req.head = 0; |
| 982 | + priv->rx_time_pdel_req.tail = 0; |
| 983 | + /* reset pdelay_resp buffer */ |
| 984 | + priv->rx_time_pdel_resp.head = 0; |
| 985 | + priv->rx_time_pdel_resp.tail = 0; |
| 986 | + break; |
| 987 | + case PTP_SET_COMPENSATION: |
| 988 | + p_comp = (struct ptp_set_comp *)arg; |
| 989 | + fec_set_drift(priv, p_comp); |
| 990 | + break; |
| 991 | + case PTP_GET_ORIG_COMP: |
| 992 | + ((struct ptp_get_comp *)arg)->dw_origcomp = FEC_PTP_ORIG_COMP; |
| 993 | + break; |
| 994 | + default: |
| 995 | + return -EINVAL; |
| 996 | + } |
| 997 | + return retval; |
| 998 | +} |
| 999 | + |
| 1000 | +static const struct file_operations ptp_fops = { |
| 1001 | + .owner = THIS_MODULE, |
| 1002 | + .llseek = NULL, |
| 1003 | + .read = NULL, |
| 1004 | + .write = NULL, |
| 1005 | + .unlocked_ioctl = ptp_unlocked_ioctl, |
| 1006 | + .open = ptp_open, |
| 1007 | + .release = ptp_release, |
| 1008 | +}; |
| 1009 | + |
| 1010 | +static int init_ptp(void) |
| 1011 | +{ |
| 1012 | + if (register_chrdev(PTP_MAJOR, "ptp", &ptp_fops)) |
| 1013 | + printk(KERN_ERR "Unable to register PTP deivce as char\n"); |
| 1014 | + |
| 1015 | + return 0; |
| 1016 | +} |
| 1017 | + |
| 1018 | +static void ptp_free(void) |
| 1019 | +{ |
| 1020 | + /*unregister the PTP device*/ |
| 1021 | + unregister_chrdev(PTP_MAJOR, "ptp"); |
| 1022 | +} |
| 1023 | + |
| 1024 | + |
| 1025 | + |
| 1026 | +/* |
| 1027 | + * Resource required for accessing 1588 Timer Registers. |
| 1028 | + */ |
| 1029 | +int fec_ptp_init(struct fec_ptp_private *priv, int id) |
| 1030 | +{ |
| 1031 | + fec_ptp_init_circ(&(priv->rx_time_sync)); |
| 1032 | + fec_ptp_init_circ(&(priv->rx_time_del_req)); |
| 1033 | + fec_ptp_init_circ(&(priv->rx_time_pdel_req)); |
| 1034 | + fec_ptp_init_circ(&(priv->rx_time_pdel_resp)); |
| 1035 | + |
| 1036 | + spin_lock_init(&priv->ptp_lock); |
| 1037 | + spin_lock_init(&priv->cnt_lock); |
| 1038 | + ptp_private[id] = priv; |
| 1039 | + if (id == 0) |
| 1040 | + init_ptp(); |
| 1041 | + return 0; |
| 1042 | +} |
| 1043 | +EXPORT_SYMBOL(fec_ptp_init); |
| 1044 | + |
| 1045 | +void fec_ptp_cleanup(struct fec_ptp_private *priv) |
| 1046 | +{ |
| 1047 | + |
| 1048 | + if (priv->rx_time_sync.buf) |
| 1049 | + vfree(priv->rx_time_sync.buf); |
| 1050 | + if (priv->rx_time_del_req.buf) |
| 1051 | + vfree(priv->rx_time_del_req.buf); |
| 1052 | + if (priv->rx_time_pdel_req.buf) |
| 1053 | + vfree(priv->rx_time_pdel_req.buf); |
| 1054 | + if (priv->rx_time_pdel_resp.buf) |
| 1055 | + vfree(priv->rx_time_pdel_resp.buf); |
| 1056 | + |
| 1057 | + ptp_free(); |
| 1058 | +} |
| 1059 | +EXPORT_SYMBOL(fec_ptp_cleanup); |
| 1060 | --- /dev/null |
| 1061 | +++ b/drivers/net/fec_1588.h |
| 1062 | @@ -0,0 +1,195 @@ |
| 1063 | +/* |
| 1064 | + * drivers/net/fec_1588.h |
| 1065 | + * |
| 1066 | + * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved. |
| 1067 | + * |
| 1068 | + * This program is free software; you can redistribute it and/or modify |
| 1069 | + * it under the terms of the GNU General Public License as published by |
| 1070 | + * the Free Software Foundation; either version 2 of the License, or |
| 1071 | + * (at your option) any later version. |
| 1072 | + * |
| 1073 | + * This program is distributed in the hope that it will be useful, |
| 1074 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 1075 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 1076 | + * GNU General Public License for more details. |
| 1077 | + * |
| 1078 | + * You should have received a copy of the GNU General Public License along |
| 1079 | + * with this program; if not, write to the Free Software Foundation, Inc., |
| 1080 | + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 1081 | + * |
| 1082 | + */ |
| 1083 | + |
| 1084 | +#ifndef FEC_1588_H |
| 1085 | +#define FEC_1588_H |
| 1086 | + |
| 1087 | +#include <linux/circ_buf.h> |
| 1088 | +#include "fec.h" |
| 1089 | + |
| 1090 | +#define fec_readl(addr) \ |
| 1091 | + ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; }) |
| 1092 | + |
| 1093 | +#define fec_writel(b, addr) (void)((*(volatile unsigned int *) (addr)) = (b)) |
| 1094 | + |
| 1095 | +#define FALSE 0 |
| 1096 | +#define TRUE 1 |
| 1097 | + |
| 1098 | +/* FEC 1588 register bits */ |
| 1099 | +#define FEC_T_CTRL_CAPTURE 0x00000800 |
| 1100 | +#define FEC_T_CTRL_RESTART 0x00000200 |
| 1101 | +#define FEC_T_CTRL_PERIOD_RST 0x00000010 |
| 1102 | +#define FEC_T_CTRL_PINPER 0x00000080 |
| 1103 | +#define FEC_T_CTRL_ENABLE 0x00000001 |
| 1104 | + |
| 1105 | +#define FEC_T_INC_MASK 0x0000007f |
| 1106 | +#define FEC_T_INC_OFFSET 0 |
| 1107 | +#define FEC_T_INC_CORR_MASK 0x00007f00 |
| 1108 | +#define FEC_T_INC_CORR_OFFSET 8 |
| 1109 | + |
| 1110 | +#define FEC_T_INC_40MHZ 8 |
| 1111 | +#define FEC_ATIME_40MHZ 125000000 |
| 1112 | + |
| 1113 | +#define FEC_T_PERIOD_ONE_SEC 0x3B9ACA00 |
| 1114 | + |
| 1115 | +/* IEEE 1588 definition */ |
| 1116 | +#define FEC_ECNTRL_TS_EN 0x10 |
| 1117 | +#define PTP_MAJOR 232 /*the temporary major number |
| 1118 | + *used by PTP driver, the major |
| 1119 | + *number 232~239 is unassigned*/ |
| 1120 | + |
| 1121 | +#define DEFAULT_PTP_RX_BUF_SZ 2048 |
| 1122 | +#define PTP_MSG_SYNC 0x0 |
| 1123 | +#define PTP_MSG_DEL_REQ 0x1 |
| 1124 | +#define PTP_MSG_P_DEL_REQ 0x2 |
| 1125 | +#define PTP_MSG_P_DEL_RESP 0x3 |
| 1126 | +#define PTP_MSG_DEL_RESP 0x4 |
| 1127 | +#define PTP_MSG_ALL_OTHER 0x5 |
| 1128 | + |
| 1129 | +#define PTP_GET_TX_TIMESTAMP 0x1 |
| 1130 | +#define PTP_GET_RX_TIMESTAMP 0x9 |
| 1131 | +#define PTP_SET_RTC_TIME 0x3 |
| 1132 | +#define PTP_SET_COMPENSATION 0x4 |
| 1133 | +#define PTP_GET_CURRENT_TIME 0x5 |
| 1134 | +#define PTP_FLUSH_TIMESTAMP 0x6 |
| 1135 | +#define PTP_ADJ_ADDEND 0x7 |
| 1136 | +#define PTP_GET_ORIG_COMP 0x8 |
| 1137 | +#define PTP_GET_ADDEND 0xB |
| 1138 | +#define PTP_GET_RX_TIMESTAMP_PDELAY_REQ 0xC |
| 1139 | +#define PTP_GET_RX_TIMESTAMP_PDELAY_RESP 0xD |
| 1140 | + |
| 1141 | +#define FEC_PTP_DOMAIN_DLFT 0xe0000181 |
| 1142 | +#define FEC_PTP_IP_OFFS 0x0 |
| 1143 | +#define FEC_PTP_UDP_OFFS 0x14 |
| 1144 | +#define FEC_PTP_MSG_TYPE_OFFS 0x1C |
| 1145 | +#define FEC_PTP_SEQ_ID_OFFS 0x3A |
| 1146 | +#define FEC_PTP_COR_NS 0x24 |
| 1147 | +#define FEC_PTP_CTRL_OFFS 0x3C |
| 1148 | +#define FEC_PACKET_TYPE_UDP 0x11 |
| 1149 | + |
| 1150 | +#define FEC_PTP_ORIG_COMP 0x15555 |
| 1151 | + |
| 1152 | +/* PTP standard time representation structure */ |
| 1153 | +struct ptp_time { |
| 1154 | + u64 sec; /* seconds */ |
| 1155 | + u32 nsec; /* nanoseconds */ |
| 1156 | +}; |
| 1157 | + |
| 1158 | +/* Structure for PTP Time Stamp */ |
| 1159 | +struct fec_ptp_data_t { |
| 1160 | + int key; |
| 1161 | + struct ptp_time ts_time; |
| 1162 | +}; |
| 1163 | + |
| 1164 | +/* interface for PTP driver command GET_TX_TIME */ |
| 1165 | +struct ptp_ts_data { |
| 1166 | + /* PTP version */ |
| 1167 | + u8 version; |
| 1168 | + /* PTP source port ID */ |
| 1169 | + u8 spid[10]; |
| 1170 | + /* PTP sequence ID */ |
| 1171 | + u16 seq_id; |
| 1172 | + /* PTP message type */ |
| 1173 | + u8 message_type; |
| 1174 | + /* PTP timestamp */ |
| 1175 | + struct ptp_time ts; |
| 1176 | +}; |
| 1177 | + |
| 1178 | +/* interface for PTP driver command SET_RTC_TIME/GET_CURRENT_TIME */ |
| 1179 | +struct ptp_rtc_time { |
| 1180 | + struct ptp_time rtc_time; |
| 1181 | +}; |
| 1182 | + |
| 1183 | +/* interface for PTP driver command SET_COMPENSATION */ |
| 1184 | +struct ptp_set_comp { |
| 1185 | + u32 drift; |
| 1186 | + u32 o_ops; |
| 1187 | +}; |
| 1188 | + |
| 1189 | +/* interface for PTP driver command GET_ORIG_COMP */ |
| 1190 | +struct ptp_get_comp { |
| 1191 | + /* the initial compensation value */ |
| 1192 | + u32 dw_origcomp; |
| 1193 | + /* the minimum compensation value */ |
| 1194 | + u32 dw_mincomp; |
| 1195 | + /*the max compensation value*/ |
| 1196 | + u32 dw_maxcomp; |
| 1197 | + /*the min drift applying min compensation value in ppm*/ |
| 1198 | + u32 dw_mindrift; |
| 1199 | + /*the max drift applying max compensation value in ppm*/ |
| 1200 | + u32 dw_maxdrift; |
| 1201 | +}; |
| 1202 | + |
| 1203 | +struct ptp_time_correct { |
| 1204 | + u32 corr_period; |
| 1205 | + u32 corr_inc; |
| 1206 | +}; |
| 1207 | + |
| 1208 | +/* PTP message version */ |
| 1209 | +#define PTP_1588_MSG_VER_1 1 |
| 1210 | +#define PTP_1588_MSG_VER_2 2 |
| 1211 | + |
| 1212 | +struct fec_ptp_private { |
| 1213 | + void __iomem *hwp; |
| 1214 | + |
| 1215 | + struct circ_buf rx_time_sync; |
| 1216 | + struct circ_buf rx_time_del_req; |
| 1217 | + struct circ_buf rx_time_pdel_req; |
| 1218 | + struct circ_buf rx_time_pdel_resp; |
| 1219 | + spinlock_t ptp_lock; |
| 1220 | + spinlock_t cnt_lock; |
| 1221 | + |
| 1222 | + u64 prtc; |
| 1223 | + struct ptp_time txstamp; |
| 1224 | +}; |
| 1225 | + |
| 1226 | +#ifdef CONFIG_FEC_1588 |
| 1227 | +extern int fec_ptp_init(struct fec_ptp_private *priv, int id); |
| 1228 | +extern void fec_ptp_cleanup(struct fec_ptp_private *priv); |
| 1229 | +extern int fec_ptp_start(struct fec_ptp_private *priv); |
| 1230 | +extern void fec_ptp_stop(struct fec_ptp_private *priv); |
| 1231 | +extern int fec_ptp_do_txstamp(struct sk_buff *skb); |
| 1232 | +extern void fec_ptp_store_txstamp(struct fec_ptp_private *priv); |
| 1233 | +extern void fec_ptp_store_rxstamp(struct fec_ptp_private *priv, |
| 1234 | + struct sk_buff *skb, |
| 1235 | + struct bufdesc *bdp); |
| 1236 | +#else |
| 1237 | +static inline int fec_ptp_init(struct fec_ptp_private *priv, int id) |
| 1238 | +{ |
| 1239 | + return 1; |
| 1240 | +} |
| 1241 | +static inline void fec_ptp_cleanup(struct fec_ptp_private *priv) { } |
| 1242 | +static inline int fec_ptp_start(struct fec_ptp_private *priv) |
| 1243 | +{ |
| 1244 | + return 1; |
| 1245 | +} |
| 1246 | +static inline void fec_ptp_stop(struct fec_ptp_private *priv) {} |
| 1247 | +static inline int fec_ptp_do_txstamp(struct sk_buff *skb) |
| 1248 | +{ |
| 1249 | + return 0; |
| 1250 | +} |
| 1251 | +static inline void fec_ptp_store_txstamp(struct fec_ptp_private *priv) {} |
| 1252 | +static inline void fec_ptp_store_rxstamp(struct fec_ptp_private *priv, |
| 1253 | + struct sk_buff *skb, |
| 1254 | + struct bufdesc *bdp) {} |
| 1255 | +#endif /* 1588 */ |
| 1256 | + |
| 1257 | +#endif |
| 1258 | |
