Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright David Brownell 2000-2002 |
| 3 | * Copyright (c) 2005 MontaVista Software |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License as published by the |
| 7 | * Free Software Foundation; either version 2 of the License, or (at your |
| 8 | * option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 12 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 13 | * for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software Foundation, |
| 17 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 18 | * |
| 19 | * Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided |
| 20 | * by Hunter Wu. |
| 21 | */ |
| 22 | |
| 23 | #include <linux/platform_device.h> |
| 24 | #include <linux/fsl_devices.h> |
| 25 | |
| 26 | #include "ehci-fsl.h" |
| 27 | |
Joe Perches | dc0d5c1 | 2007-12-17 11:40:18 -0800 | [diff] [blame] | 28 | /* FIXME: Power Management is un-ported so temporarily disable it */ |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 29 | #undef CONFIG_PM |
| 30 | |
| 31 | /* PCI-based HCs are common, but plenty of non-PCI HCs are used too */ |
| 32 | |
| 33 | /* configure so an HC device and id are always provided */ |
| 34 | /* always called with process context; sleeping is OK */ |
| 35 | |
| 36 | /** |
| 37 | * usb_hcd_fsl_probe - initialize FSL-based HCDs |
| 38 | * @drvier: Driver to be used for this HCD |
| 39 | * @pdev: USB Host Controller being probed |
| 40 | * Context: !in_interrupt() |
| 41 | * |
| 42 | * Allocates basic resources for this USB host controller. |
| 43 | * |
| 44 | */ |
| 45 | int usb_hcd_fsl_probe(const struct hc_driver *driver, |
| 46 | struct platform_device *pdev) |
| 47 | { |
| 48 | struct fsl_usb2_platform_data *pdata; |
| 49 | struct usb_hcd *hcd; |
| 50 | struct resource *res; |
| 51 | int irq; |
| 52 | int retval; |
| 53 | unsigned int temp; |
| 54 | |
| 55 | pr_debug("initializing FSL-SOC USB Controller\n"); |
| 56 | |
| 57 | /* Need platform data for setup */ |
| 58 | pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data; |
| 59 | if (!pdata) { |
| 60 | dev_err(&pdev->dev, |
| 61 | "No platform data for %s.\n", pdev->dev.bus_id); |
| 62 | return -ENODEV; |
| 63 | } |
| 64 | |
| 65 | /* |
| 66 | * This is a host mode driver, verify that we're supposed to be |
| 67 | * in host mode. |
| 68 | */ |
| 69 | if (!((pdata->operating_mode == FSL_USB2_DR_HOST) || |
Li Yang | ba02978 | 2007-05-11 17:09:55 +0800 | [diff] [blame] | 70 | (pdata->operating_mode == FSL_USB2_MPH_HOST) || |
| 71 | (pdata->operating_mode == FSL_USB2_DR_OTG))) { |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 72 | dev_err(&pdev->dev, |
| 73 | "Non Host Mode configured for %s. Wrong driver linked.\n", |
| 74 | pdev->dev.bus_id); |
| 75 | return -ENODEV; |
| 76 | } |
| 77 | |
| 78 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 79 | if (!res) { |
| 80 | dev_err(&pdev->dev, |
| 81 | "Found HC with no IRQ. Check %s setup!\n", |
| 82 | pdev->dev.bus_id); |
| 83 | return -ENODEV; |
| 84 | } |
| 85 | irq = res->start; |
| 86 | |
| 87 | hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id); |
| 88 | if (!hcd) { |
| 89 | retval = -ENOMEM; |
| 90 | goto err1; |
| 91 | } |
| 92 | |
| 93 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 94 | if (!res) { |
| 95 | dev_err(&pdev->dev, |
| 96 | "Found HC with no register addr. Check %s setup!\n", |
| 97 | pdev->dev.bus_id); |
| 98 | retval = -ENODEV; |
| 99 | goto err2; |
| 100 | } |
| 101 | hcd->rsrc_start = res->start; |
| 102 | hcd->rsrc_len = res->end - res->start + 1; |
| 103 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, |
| 104 | driver->description)) { |
| 105 | dev_dbg(&pdev->dev, "controller already in use\n"); |
| 106 | retval = -EBUSY; |
| 107 | goto err2; |
| 108 | } |
| 109 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); |
| 110 | |
| 111 | if (hcd->regs == NULL) { |
| 112 | dev_dbg(&pdev->dev, "error mapping memory\n"); |
| 113 | retval = -EFAULT; |
| 114 | goto err3; |
| 115 | } |
| 116 | |
| 117 | /* Enable USB controller */ |
| 118 | temp = in_be32(hcd->regs + 0x500); |
| 119 | out_be32(hcd->regs + 0x500, temp | 0x4); |
| 120 | |
| 121 | /* Set to Host mode */ |
| 122 | temp = in_le32(hcd->regs + 0x1a8); |
| 123 | out_le32(hcd->regs + 0x1a8, temp | 0x3); |
| 124 | |
Alan Stern | 442258e | 2007-12-06 14:47:08 -0500 | [diff] [blame] | 125 | retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 126 | if (retval != 0) |
| 127 | goto err4; |
| 128 | return retval; |
| 129 | |
| 130 | err4: |
| 131 | iounmap(hcd->regs); |
| 132 | err3: |
| 133 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 134 | err2: |
| 135 | usb_put_hcd(hcd); |
| 136 | err1: |
| 137 | dev_err(&pdev->dev, "init %s fail, %d\n", pdev->dev.bus_id, retval); |
| 138 | return retval; |
| 139 | } |
| 140 | |
| 141 | /* may be called without controller electrically present */ |
| 142 | /* may be called with controller, bus, and devices active */ |
| 143 | |
| 144 | /** |
| 145 | * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs |
| 146 | * @dev: USB Host Controller being removed |
| 147 | * Context: !in_interrupt() |
| 148 | * |
| 149 | * Reverses the effect of usb_hcd_fsl_probe(). |
| 150 | * |
| 151 | */ |
| 152 | void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev) |
| 153 | { |
| 154 | usb_remove_hcd(hcd); |
| 155 | iounmap(hcd->regs); |
| 156 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 157 | usb_put_hcd(hcd); |
| 158 | } |
| 159 | |
| 160 | static void mpc83xx_setup_phy(struct ehci_hcd *ehci, |
| 161 | enum fsl_usb2_phy_modes phy_mode, |
| 162 | unsigned int port_offset) |
| 163 | { |
Kumar Gala | 499003e8 | 2006-01-24 08:11:27 -0800 | [diff] [blame] | 164 | u32 portsc = 0; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 165 | switch (phy_mode) { |
| 166 | case FSL_USB2_PHY_ULPI: |
| 167 | portsc |= PORT_PTS_ULPI; |
| 168 | break; |
| 169 | case FSL_USB2_PHY_SERIAL: |
| 170 | portsc |= PORT_PTS_SERIAL; |
| 171 | break; |
| 172 | case FSL_USB2_PHY_UTMI_WIDE: |
| 173 | portsc |= PORT_PTS_PTW; |
| 174 | /* fall through */ |
| 175 | case FSL_USB2_PHY_UTMI: |
| 176 | portsc |= PORT_PTS_UTMI; |
| 177 | break; |
| 178 | case FSL_USB2_PHY_NONE: |
| 179 | break; |
| 180 | } |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 181 | ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | static void mpc83xx_usb_setup(struct usb_hcd *hcd) |
| 185 | { |
| 186 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 187 | struct fsl_usb2_platform_data *pdata; |
| 188 | void __iomem *non_ehci = hcd->regs; |
Li Yang | ba02978 | 2007-05-11 17:09:55 +0800 | [diff] [blame] | 189 | u32 temp; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 190 | |
| 191 | pdata = |
| 192 | (struct fsl_usb2_platform_data *)hcd->self.controller-> |
| 193 | platform_data; |
| 194 | /* Enable PHY interface in the control reg. */ |
Li Yang | ba02978 | 2007-05-11 17:09:55 +0800 | [diff] [blame] | 195 | temp = in_be32(non_ehci + FSL_SOC_USB_CTRL); |
| 196 | out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 197 | out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b); |
| 198 | |
Li Yang | 40acc09 | 2007-05-23 13:58:17 -0700 | [diff] [blame] | 199 | #if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE) |
| 200 | /* |
| 201 | * Turn on cache snooping hardware, since some PowerPC platforms |
| 202 | * wholly rely on hardware to deal with cache coherent |
| 203 | */ |
| 204 | |
| 205 | /* Setup Snooping for all the 4GB space */ |
| 206 | /* SNOOP1 starts from 0x0, size 2G */ |
| 207 | out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB); |
| 208 | /* SNOOP2 starts from 0x80000000, size 2G */ |
| 209 | out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB); |
| 210 | #endif |
| 211 | |
Li Yang | ba02978 | 2007-05-11 17:09:55 +0800 | [diff] [blame] | 212 | if ((pdata->operating_mode == FSL_USB2_DR_HOST) || |
| 213 | (pdata->operating_mode == FSL_USB2_DR_OTG)) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 214 | mpc83xx_setup_phy(ehci, pdata->phy_mode, 0); |
| 215 | |
| 216 | if (pdata->operating_mode == FSL_USB2_MPH_HOST) { |
Kumar Gala | 8cd42e9 | 2006-01-20 13:57:52 -0800 | [diff] [blame] | 217 | unsigned int chip, rev, svr; |
| 218 | |
| 219 | svr = mfspr(SPRN_SVR); |
| 220 | chip = svr >> 16; |
| 221 | rev = (svr >> 4) & 0xf; |
| 222 | |
| 223 | /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */ |
| 224 | if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055)) |
| 225 | ehci->has_fsl_port_bug = 1; |
| 226 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 227 | if (pdata->port_enables & FSL_USB2_PORT0_ENABLED) |
| 228 | mpc83xx_setup_phy(ehci, pdata->phy_mode, 0); |
| 229 | if (pdata->port_enables & FSL_USB2_PORT1_ENABLED) |
| 230 | mpc83xx_setup_phy(ehci, pdata->phy_mode, 1); |
| 231 | } |
| 232 | |
| 233 | /* put controller in host mode. */ |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 234 | ehci_writel(ehci, 0x00000003, non_ehci + FSL_SOC_USB_USBMODE); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 235 | out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c); |
| 236 | out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040); |
| 237 | out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001); |
| 238 | } |
| 239 | |
| 240 | /* called after powerup, by probe or system-pm "wakeup" */ |
| 241 | static int ehci_fsl_reinit(struct ehci_hcd *ehci) |
| 242 | { |
| 243 | mpc83xx_usb_setup(ehci_to_hcd(ehci)); |
| 244 | ehci_port_power(ehci, 0); |
| 245 | |
| 246 | return 0; |
| 247 | } |
| 248 | |
| 249 | /* called during probe() after chip reset completes */ |
| 250 | static int ehci_fsl_setup(struct usb_hcd *hcd) |
| 251 | { |
| 252 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 253 | int retval; |
| 254 | |
| 255 | /* EHCI registers start at offset 0x100 */ |
| 256 | ehci->caps = hcd->regs + 0x100; |
| 257 | ehci->regs = hcd->regs + 0x100 + |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 258 | HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 259 | dbg_hcs_params(ehci, "reset"); |
| 260 | dbg_hcc_params(ehci, "reset"); |
| 261 | |
| 262 | /* cache this readonly data; minimize chip reads */ |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 263 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 264 | |
| 265 | retval = ehci_halt(ehci); |
| 266 | if (retval) |
| 267 | return retval; |
| 268 | |
| 269 | /* data structure init */ |
| 270 | retval = ehci_init(hcd); |
| 271 | if (retval) |
| 272 | return retval; |
| 273 | |
| 274 | ehci->is_tdi_rh_tt = 1; |
| 275 | |
| 276 | ehci->sbrn = 0x20; |
| 277 | |
| 278 | ehci_reset(ehci); |
| 279 | |
| 280 | retval = ehci_fsl_reinit(ehci); |
| 281 | return retval; |
| 282 | } |
| 283 | |
| 284 | static const struct hc_driver ehci_fsl_hc_driver = { |
| 285 | .description = hcd_name, |
| 286 | .product_desc = "Freescale On-Chip EHCI Host Controller", |
| 287 | .hcd_priv_size = sizeof(struct ehci_hcd), |
| 288 | |
| 289 | /* |
| 290 | * generic hardware linkage |
| 291 | */ |
| 292 | .irq = ehci_irq, |
| 293 | .flags = HCD_USB2, |
| 294 | |
| 295 | /* |
| 296 | * basic lifecycle operations |
| 297 | */ |
| 298 | .reset = ehci_fsl_setup, |
| 299 | .start = ehci_run, |
| 300 | #ifdef CONFIG_PM |
| 301 | .suspend = ehci_bus_suspend, |
| 302 | .resume = ehci_bus_resume, |
| 303 | #endif |
| 304 | .stop = ehci_stop, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 305 | .shutdown = ehci_shutdown, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 306 | |
| 307 | /* |
| 308 | * managing i/o requests and associated device resources |
| 309 | */ |
| 310 | .urb_enqueue = ehci_urb_enqueue, |
| 311 | .urb_dequeue = ehci_urb_dequeue, |
| 312 | .endpoint_disable = ehci_endpoint_disable, |
| 313 | |
| 314 | /* |
| 315 | * scheduling support |
| 316 | */ |
| 317 | .get_frame_number = ehci_get_frame, |
| 318 | |
| 319 | /* |
| 320 | * root hub support |
| 321 | */ |
| 322 | .hub_status_data = ehci_hub_status_data, |
| 323 | .hub_control = ehci_hub_control, |
| 324 | .bus_suspend = ehci_bus_suspend, |
| 325 | .bus_resume = ehci_bus_resume, |
Balaji Rao | 90da096 | 2007-11-22 01:58:14 +0530 | [diff] [blame] | 326 | .relinquish_port = ehci_relinquish_port, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 327 | }; |
| 328 | |
| 329 | static int ehci_fsl_drv_probe(struct platform_device *pdev) |
| 330 | { |
| 331 | if (usb_disabled()) |
| 332 | return -ENODEV; |
| 333 | |
| 334 | return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev); |
| 335 | } |
| 336 | |
| 337 | static int ehci_fsl_drv_remove(struct platform_device *pdev) |
| 338 | { |
| 339 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 340 | |
| 341 | usb_hcd_fsl_remove(hcd, pdev); |
| 342 | |
| 343 | return 0; |
| 344 | } |
| 345 | |
Kumar Gala | 01cced2 | 2006-04-11 10:07:16 -0500 | [diff] [blame] | 346 | MODULE_ALIAS("fsl-ehci"); |
| 347 | |
| 348 | static struct platform_driver ehci_fsl_driver = { |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 349 | .probe = ehci_fsl_drv_probe, |
| 350 | .remove = ehci_fsl_drv_remove, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 351 | .shutdown = usb_hcd_platform_shutdown, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 352 | .driver = { |
Kumar Gala | 01cced2 | 2006-04-11 10:07:16 -0500 | [diff] [blame] | 353 | .name = "fsl-ehci", |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 354 | }, |
| 355 | }; |