/* * Driver for Aeroflex Gaisler GRLIB GRUSBHC EHCI host controller * * GRUSBHC is typically found on LEON/GRLIB SoCs * * (c) Jan Andersson * * Based on ehci-ppc-of.c which is: * (c) Valentine Barshak * and in turn based on "ehci-ppc-soc.c" by Stefan Roese * and "ohci-ppc-of.c" by Sylvain Munaut * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include #include #define GRUSBHC_HCIVERSION 0x0100 /* Known value of cap. reg. HCIVERSION */ static const struct hc_driver ehci_grlib_hc_driver = { .description = hcd_name, .product_desc = "GRLIB GRUSBHC EHCI", .hcd_priv_size = sizeof(struct ehci_hcd), /* * generic hardware linkage */ .irq = ehci_irq, .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, /* * basic lifecycle operations */ .reset = ehci_setup, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, /* * managing i/o requests and associated device resources */ .urb_enqueue = ehci_urb_enqueue, .urb_dequeue = ehci_urb_dequeue, .endpoint_disable = ehci_endpoint_disable, .endpoint_reset = ehci_endpoint_reset, /* * scheduling support */ .get_frame_number = ehci_get_frame, /* * root hub support */ .hub_status_data = ehci_hub_status_data, .hub_control = ehci_hub_control, #ifdef CONFIG_PM .bus_suspend = ehci_bus_suspend, .bus_resume = ehci_bus_resume, #endif .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; static int ehci_hcd_grlib_probe(struct platform_device *op) { struct device_node *dn = op->dev.of_node; struct usb_hcd *hcd; struct ehci_hcd *ehci = NULL; struct resource res; u32 hc_capbase; int irq; int rv; if (usb_disabled()) return -ENODEV; dev_dbg(&op->dev, "initializing GRUSBHC EHCI USB Controller\n"); rv = of_address_to_resource(dn, 0, &res); if (rv) return rv; /* usb_create_hcd requires dma_mask != NULL */ op->dev.dma_mask = &op->dev.coherent_dma_mask; hcd = usb_create_hcd(&ehci_grlib_hc_driver, &op->dev, "GRUSBHC EHCI USB"); if (!hcd) return -ENOMEM; hcd->rsrc_start = res.start; hcd->rsrc_len = resource_size(&res); irq = irq_of_parse_and_map(dn, 0); if (irq == NO_IRQ) { dev_err(&op->dev, "%s: irq_of_parse_and_map failed\n", __FILE__); rv = -EBUSY; goto err_irq; } hcd->regs = devm_ioremap_resource(&op->dev, &res); if (IS_ERR(hcd->regs)) { rv = PTR_ERR(hcd->regs); goto err_ioremap; } ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs; /* determine endianness of this implementation */ hc_capbase = ehci_readl(ehci, &ehci->caps->hc_capbase); if (HC_VERSION(ehci, hc_capbase) != GRUSBHC_HCIVERSION) { ehci->big_endian_mmio = 1; ehci->big_endian_desc = 1; ehci->big_endian_capbase = 1; } rv = usb_add_hcd(hcd, irq, 0); if (rv) goto err_ioremap; device_wakeup_enable(hcd->self.controller); return 0; err_ioremap: irq_dispose_mapping(irq); err_irq: usb_put_hcd(hcd); return rv; } static int ehci_hcd_grlib_remove(struct platform_device *op) { struct usb_hcd *hcd = platform_get_drvdata(op); dev_dbg(&op->dev, "stopping GRLIB GRUSBHC EHCI USB Controller\n"); usb_remove_hcd(hcd); irq_dispose_mapping(hcd->irq); usb_put_hcd(hcd); return 0; } static const struct of_device_id ehci_hcd_grlib_of_match[] = { { .name = "GAISLER_EHCI", }, { .name = "01_026", }, {}, }; MODULE_DEVICE_TABLE(of, ehci_hcd_grlib_of_match); static struct platform_driver ehci_grlib_driver = { .probe = ehci_hcd_grlib_probe, .remove = ehci_hcd_grlib_remove, .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "grlib-ehci", .of_match_table = ehci_hcd_grlib_of_match, }, }; '>ignoremode:
Diffstat (limited to 'net/ipv4/ip_output.c')
-rw-r--r--net/ipv4/ip_output.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c