diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/usb/host/xhci.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/usb/host/xhci.c | 1030 |
1 files changed, 0 insertions, 1030 deletions
diff --git a/qemu/roms/u-boot/drivers/usb/host/xhci.c b/qemu/roms/u-boot/drivers/usb/host/xhci.c deleted file mode 100644 index d1c2e5c45..000000000 --- a/qemu/roms/u-boot/drivers/usb/host/xhci.c +++ /dev/null @@ -1,1030 +0,0 @@ -/* - * USB HOST XHCI Controller stack - * - * Based on xHCI host controller driver in linux-kernel - * by Sarah Sharp. - * - * Copyright (C) 2008 Intel Corp. - * Author: Sarah Sharp - * - * Copyright (C) 2013 Samsung Electronics Co.Ltd - * Authors: Vivek Gautam <gautam.vivek@samsung.com> - * Vikas Sajjan <vikas.sajjan@samsung.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/** - * This file gives the xhci stack for usb3.0 looking into - * xhci specification Rev1.0 (5/21/10). - * The quirk devices support hasn't been given yet. - */ - -#include <common.h> -#include <asm/byteorder.h> -#include <usb.h> -#include <malloc.h> -#include <watchdog.h> -#include <asm/cache.h> -#include <asm/unaligned.h> -#include <asm-generic/errno.h> -#include "xhci.h" - -#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT -#define CONFIG_USB_MAX_CONTROLLER_COUNT 1 -#endif - -static struct descriptor { - struct usb_hub_descriptor hub; - struct usb_device_descriptor device; - struct usb_config_descriptor config; - struct usb_interface_descriptor interface; - struct usb_endpoint_descriptor endpoint; - struct usb_ss_ep_comp_descriptor ep_companion; -} __attribute__ ((packed)) descriptor = { - { - 0xc, /* bDescLength */ - 0x2a, /* bDescriptorType: hub descriptor */ - 2, /* bNrPorts -- runtime modified */ - cpu_to_le16(0x8), /* wHubCharacteristics */ - 10, /* bPwrOn2PwrGood */ - 0, /* bHubCntrCurrent */ - {}, /* Device removable */ - {} /* at most 7 ports! XXX */ - }, - { - 0x12, /* bLength */ - 1, /* bDescriptorType: UDESC_DEVICE */ - cpu_to_le16(0x0300), /* bcdUSB: v3.0 */ - 9, /* bDeviceClass: UDCLASS_HUB */ - 0, /* bDeviceSubClass: UDSUBCLASS_HUB */ - 3, /* bDeviceProtocol: UDPROTO_SSHUBSTT */ - 9, /* bMaxPacketSize: 512 bytes 2^9 */ - 0x0000, /* idVendor */ - 0x0000, /* idProduct */ - cpu_to_le16(0x0100), /* bcdDevice */ - 1, /* iManufacturer */ - 2, /* iProduct */ - 0, /* iSerialNumber */ - 1 /* bNumConfigurations: 1 */ - }, - { - 0x9, - 2, /* bDescriptorType: UDESC_CONFIG */ - cpu_to_le16(0x1f), /* includes SS endpoint descriptor */ - 1, /* bNumInterface */ - 1, /* bConfigurationValue */ - 0, /* iConfiguration */ - 0x40, /* bmAttributes: UC_SELF_POWER */ - 0 /* bMaxPower */ - }, - { - 0x9, /* bLength */ - 4, /* bDescriptorType: UDESC_INTERFACE */ - 0, /* bInterfaceNumber */ - 0, /* bAlternateSetting */ - 1, /* bNumEndpoints */ - 9, /* bInterfaceClass: UICLASS_HUB */ - 0, /* bInterfaceSubClass: UISUBCLASS_HUB */ - 0, /* bInterfaceProtocol: UIPROTO_HSHUBSTT */ - 0 /* iInterface */ - }, - { - 0x7, /* bLength */ - 5, /* bDescriptorType: UDESC_ENDPOINT */ - 0x81, /* bEndpointAddress: IN endpoint 1 */ - 3, /* bmAttributes: UE_INTERRUPT */ - 8, /* wMaxPacketSize */ - 255 /* bInterval */ - }, - { - 0x06, /* ss_bLength */ - 0x30, /* ss_bDescriptorType: SS EP Companion */ - 0x00, /* ss_bMaxBurst: allows 1 TX between ACKs */ - /* ss_bmAttributes: 1 packet per service interval */ - 0x00, - /* ss_wBytesPerInterval: 15 bits for max 15 ports */ - cpu_to_le16(0x02), - }, -}; - -static struct xhci_ctrl xhcic[CONFIG_USB_MAX_CONTROLLER_COUNT]; - -/** - * Waits for as per specified amount of time - * for the "result" to match with "done" - * - * @param ptr pointer to the register to be read - * @param mask mask for the value read - * @param done value to be campared with result - * @param usec time to wait till - * @return 0 if handshake is success else < 0 on failure - */ -static int handshake(uint32_t volatile *ptr, uint32_t mask, - uint32_t done, int usec) -{ - uint32_t result; - - do { - result = xhci_readl(ptr); - if (result == ~(uint32_t)0) - return -ENODEV; - result &= mask; - if (result == done) - return 0; - usec--; - udelay(1); - } while (usec > 0); - - return -ETIMEDOUT; -} - -/** - * Set the run bit and wait for the host to be running. - * - * @param hcor pointer to host controller operation registers - * @return status of the Handshake - */ -static int xhci_start(struct xhci_hcor *hcor) -{ - u32 temp; - int ret; - - puts("Starting the controller\n"); - temp = xhci_readl(&hcor->or_usbcmd); - temp |= (CMD_RUN); - xhci_writel(&hcor->or_usbcmd, temp); - - /* - * Wait for the HCHalted Status bit to be 0 to indicate the host is - * running. - */ - ret = handshake(&hcor->or_usbsts, STS_HALT, 0, XHCI_MAX_HALT_USEC); - if (ret) - debug("Host took too long to start, " - "waited %u microseconds.\n", - XHCI_MAX_HALT_USEC); - return ret; -} - -/** - * Resets the XHCI Controller - * - * @param hcor pointer to host controller operation registers - * @return -EBUSY if XHCI Controller is not halted else status of handshake - */ -int xhci_reset(struct xhci_hcor *hcor) -{ - u32 cmd; - u32 state; - int ret; - - /* Halting the Host first */ - debug("// Halt the HC\n"); - state = xhci_readl(&hcor->or_usbsts) & STS_HALT; - if (!state) { - cmd = xhci_readl(&hcor->or_usbcmd); - cmd &= ~CMD_RUN; - xhci_writel(&hcor->or_usbcmd, cmd); - } - - ret = handshake(&hcor->or_usbsts, - STS_HALT, STS_HALT, XHCI_MAX_HALT_USEC); - if (ret) { - printf("Host not halted after %u microseconds.\n", - XHCI_MAX_HALT_USEC); - return -EBUSY; - } - - debug("// Reset the HC\n"); - cmd = xhci_readl(&hcor->or_usbcmd); - cmd |= CMD_RESET; - xhci_writel(&hcor->or_usbcmd, cmd); - - ret = handshake(&hcor->or_usbcmd, CMD_RESET, 0, XHCI_MAX_RESET_USEC); - if (ret) - return ret; - - /* - * xHCI cannot write to any doorbells or operational registers other - * than status until the "Controller Not Ready" flag is cleared. - */ - return handshake(&hcor->or_usbsts, STS_CNR, 0, XHCI_MAX_RESET_USEC); -} - -/** - * Used for passing endpoint bitmasks between the core and HCDs. - * Find the index for an endpoint given its descriptor. - * Use the return value to right shift 1 for the bitmask. - * - * Index = (epnum * 2) + direction - 1, - * where direction = 0 for OUT, 1 for IN. - * For control endpoints, the IN index is used (OUT index is unused), so - * index = (epnum * 2) + direction - 1 = (epnum * 2) + 1 - 1 = (epnum * 2) - * - * @param desc USB enpdoint Descriptor - * @return index of the Endpoint - */ -static unsigned int xhci_get_ep_index(struct usb_endpoint_descriptor *desc) -{ - unsigned int index; - - if (usb_endpoint_xfer_control(desc)) - index = (unsigned int)(usb_endpoint_num(desc) * 2); - else - index = (unsigned int)((usb_endpoint_num(desc) * 2) - - (usb_endpoint_dir_in(desc) ? 0 : 1)); - - return index; -} - -/** - * Issue a configure endpoint command or evaluate context command - * and wait for it to finish. - * - * @param udev pointer to the Device Data Structure - * @param ctx_change flag to indicate the Context has changed or NOT - * @return 0 on success, -1 on failure - */ -static int xhci_configure_endpoints(struct usb_device *udev, bool ctx_change) -{ - struct xhci_container_ctx *in_ctx; - struct xhci_virt_device *virt_dev; - struct xhci_ctrl *ctrl = udev->controller; - union xhci_trb *event; - - virt_dev = ctrl->devs[udev->slot_id]; - in_ctx = virt_dev->in_ctx; - - xhci_flush_cache((uint32_t)in_ctx->bytes, in_ctx->size); - xhci_queue_command(ctrl, in_ctx->bytes, udev->slot_id, 0, - ctx_change ? TRB_EVAL_CONTEXT : TRB_CONFIG_EP); - event = xhci_wait_for_event(ctrl, TRB_COMPLETION); - BUG_ON(TRB_TO_SLOT_ID(le32_to_cpu(event->event_cmd.flags)) - != udev->slot_id); - - switch (GET_COMP_CODE(le32_to_cpu(event->event_cmd.status))) { - case COMP_SUCCESS: - debug("Successful %s command\n", - ctx_change ? "Evaluate Context" : "Configure Endpoint"); - break; - default: - printf("ERROR: %s command returned completion code %d.\n", - ctx_change ? "Evaluate Context" : "Configure Endpoint", - GET_COMP_CODE(le32_to_cpu(event->event_cmd.status))); - return -EINVAL; - } - - xhci_acknowledge_event(ctrl); - - return 0; -} - -/** - * Configure the endpoint, programming the device contexts. - * - * @param udev pointer to the USB device structure - * @return returns the status of the xhci_configure_endpoints - */ -static int xhci_set_configuration(struct usb_device *udev) -{ - struct xhci_container_ctx *in_ctx; - struct xhci_container_ctx *out_ctx; - struct xhci_input_control_ctx *ctrl_ctx; - struct xhci_slot_ctx *slot_ctx; - struct xhci_ep_ctx *ep_ctx[MAX_EP_CTX_NUM]; - int cur_ep; - int max_ep_flag = 0; - int ep_index; - unsigned int dir; - unsigned int ep_type; - struct xhci_ctrl *ctrl = udev->controller; - int num_of_ep; - int ep_flag = 0; - u64 trb_64 = 0; - int slot_id = udev->slot_id; - struct xhci_virt_device *virt_dev = ctrl->devs[slot_id]; - struct usb_interface *ifdesc; - - out_ctx = virt_dev->out_ctx; - in_ctx = virt_dev->in_ctx; - - num_of_ep = udev->config.if_desc[0].no_of_ep; - ifdesc = &udev->config.if_desc[0]; - - ctrl_ctx = xhci_get_input_control_ctx(in_ctx); - /* Zero the input context control */ - ctrl_ctx->add_flags = 0; - ctrl_ctx->drop_flags = 0; - - /* EP_FLAG gives values 1 & 4 for EP1OUT and EP2IN */ - for (cur_ep = 0; cur_ep < num_of_ep; cur_ep++) { - ep_flag = xhci_get_ep_index(&ifdesc->ep_desc[cur_ep]); - ctrl_ctx->add_flags |= cpu_to_le32(1 << (ep_flag + 1)); - if (max_ep_flag < ep_flag) - max_ep_flag = ep_flag; - } - - xhci_inval_cache((uint32_t)out_ctx->bytes, out_ctx->size); - - /* slot context */ - xhci_slot_copy(ctrl, in_ctx, out_ctx); - slot_ctx = xhci_get_slot_ctx(ctrl, in_ctx); - slot_ctx->dev_info &= ~(LAST_CTX_MASK); - slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(max_ep_flag + 1) | 0); - - xhci_endpoint_copy(ctrl, in_ctx, out_ctx, 0); - - /* filling up ep contexts */ - for (cur_ep = 0; cur_ep < num_of_ep; cur_ep++) { - struct usb_endpoint_descriptor *endpt_desc = NULL; - - endpt_desc = &ifdesc->ep_desc[cur_ep]; - trb_64 = 0; - - ep_index = xhci_get_ep_index(endpt_desc); - ep_ctx[ep_index] = xhci_get_ep_ctx(ctrl, in_ctx, ep_index); - - /* Allocate the ep rings */ - virt_dev->eps[ep_index].ring = xhci_ring_alloc(1, true); - if (!virt_dev->eps[ep_index].ring) - return -ENOMEM; - - /*NOTE: ep_desc[0] actually represents EP1 and so on */ - dir = (((endpt_desc->bEndpointAddress) & (0x80)) >> 7); - ep_type = (((endpt_desc->bmAttributes) & (0x3)) | (dir << 2)); - ep_ctx[ep_index]->ep_info2 = - cpu_to_le32(ep_type << EP_TYPE_SHIFT); - ep_ctx[ep_index]->ep_info2 |= - cpu_to_le32(MAX_PACKET - (get_unaligned(&endpt_desc->wMaxPacketSize))); - - ep_ctx[ep_index]->ep_info2 |= - cpu_to_le32(((0 & MAX_BURST_MASK) << MAX_BURST_SHIFT) | - ((3 & ERROR_COUNT_MASK) << ERROR_COUNT_SHIFT)); - - trb_64 = (uintptr_t) - virt_dev->eps[ep_index].ring->enqueue; - ep_ctx[ep_index]->deq = cpu_to_le64(trb_64 | - virt_dev->eps[ep_index].ring->cycle_state); - } - - return xhci_configure_endpoints(udev, false); -} - -/** - * Issue an Address Device command (which will issue a SetAddress request to - * the device). - * - * @param udev pointer to the Device Data Structure - * @return 0 if successful else error code on failure - */ -static int xhci_address_device(struct usb_device *udev) -{ - int ret = 0; - struct xhci_ctrl *ctrl = udev->controller; - struct xhci_slot_ctx *slot_ctx; - struct xhci_input_control_ctx *ctrl_ctx; - struct xhci_virt_device *virt_dev; - int slot_id = udev->slot_id; - union xhci_trb *event; - - virt_dev = ctrl->devs[slot_id]; - - /* - * This is the first Set Address since device plug-in - * so setting up the slot context. - */ - debug("Setting up addressable devices\n"); - xhci_setup_addressable_virt_dev(udev); - - ctrl_ctx = xhci_get_input_control_ctx(virt_dev->in_ctx); - ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG); - ctrl_ctx->drop_flags = 0; - - xhci_queue_command(ctrl, (void *)ctrl_ctx, slot_id, 0, TRB_ADDR_DEV); - event = xhci_wait_for_event(ctrl, TRB_COMPLETION); - BUG_ON(TRB_TO_SLOT_ID(le32_to_cpu(event->event_cmd.flags)) != slot_id); - - switch (GET_COMP_CODE(le32_to_cpu(event->event_cmd.status))) { - case COMP_CTX_STATE: - case COMP_EBADSLT: - printf("Setup ERROR: address device command for slot %d.\n", - slot_id); - ret = -EINVAL; - break; - case COMP_TX_ERR: - puts("Device not responding to set address.\n"); - ret = -EPROTO; - break; - case COMP_DEV_ERR: - puts("ERROR: Incompatible device" - "for address device command.\n"); - ret = -ENODEV; - break; - case COMP_SUCCESS: - debug("Successful Address Device command\n"); - udev->status = 0; - break; - default: - printf("ERROR: unexpected command completion code 0x%x.\n", - GET_COMP_CODE(le32_to_cpu(event->event_cmd.status))); - ret = -EINVAL; - break; - } - - xhci_acknowledge_event(ctrl); - - if (ret < 0) - /* - * TODO: Unsuccessful Address Device command shall leave the - * slot in default state. So, issue Disable Slot command now. - */ - return ret; - - xhci_inval_cache((uint32_t)virt_dev->out_ctx->bytes, - virt_dev->out_ctx->size); - slot_ctx = xhci_get_slot_ctx(ctrl, virt_dev->out_ctx); - - debug("xHC internal address is: %d\n", - le32_to_cpu(slot_ctx->dev_state) & DEV_ADDR_MASK); - - return 0; -} - -/** - * Issue Enable slot command to the controller to allocate - * device slot and assign the slot id. It fails if the xHC - * ran out of device slots, the Enable Slot command timed out, - * or allocating memory failed. - * - * @param udev pointer to the Device Data Structure - * @return Returns 0 on succes else return error code on failure - */ -int usb_alloc_device(struct usb_device *udev) -{ - union xhci_trb *event; - struct xhci_ctrl *ctrl = udev->controller; - int ret; - - /* - * Root hub will be first device to be initailized. - * If this device is root-hub, don't do any xHC related - * stuff. - */ - if (ctrl->rootdev == 0) { - udev->speed = USB_SPEED_SUPER; - return 0; - } - - xhci_queue_command(ctrl, NULL, 0, 0, TRB_ENABLE_SLOT); - event = xhci_wait_for_event(ctrl, TRB_COMPLETION); - BUG_ON(GET_COMP_CODE(le32_to_cpu(event->event_cmd.status)) - != COMP_SUCCESS); - - udev->slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->event_cmd.flags)); - - xhci_acknowledge_event(ctrl); - - ret = xhci_alloc_virt_device(udev); - if (ret < 0) { - /* - * TODO: Unsuccessful Address Device command shall leave - * the slot in default. So, issue Disable Slot command now. - */ - puts("Could not allocate xHCI USB device data structures\n"); - return ret; - } - - return 0; -} - -/* - * Full speed devices may have a max packet size greater than 8 bytes, but the - * USB core doesn't know that until it reads the first 8 bytes of the - * descriptor. If the usb_device's max packet size changes after that point, - * we need to issue an evaluate context command and wait on it. - * - * @param udev pointer to the Device Data Structure - * @return returns the status of the xhci_configure_endpoints - */ -int xhci_check_maxpacket(struct usb_device *udev) -{ - struct xhci_ctrl *ctrl = udev->controller; - unsigned int slot_id = udev->slot_id; - int ep_index = 0; /* control endpoint */ - struct xhci_container_ctx *in_ctx; - struct xhci_container_ctx *out_ctx; - struct xhci_input_control_ctx *ctrl_ctx; - struct xhci_ep_ctx *ep_ctx; - int max_packet_size; - int hw_max_packet_size; - int ret = 0; - struct usb_interface *ifdesc; - - ifdesc = &udev->config.if_desc[0]; - - out_ctx = ctrl->devs[slot_id]->out_ctx; - xhci_inval_cache((uint32_t)out_ctx->bytes, out_ctx->size); - - ep_ctx = xhci_get_ep_ctx(ctrl, out_ctx, ep_index); - hw_max_packet_size = MAX_PACKET_DECODED(le32_to_cpu(ep_ctx->ep_info2)); - max_packet_size = usb_endpoint_maxp(&ifdesc->ep_desc[0]); - if (hw_max_packet_size != max_packet_size) { - debug("Max Packet Size for ep 0 changed.\n"); - debug("Max packet size in usb_device = %d\n", max_packet_size); - debug("Max packet size in xHCI HW = %d\n", hw_max_packet_size); - debug("Issuing evaluate context command.\n"); - - /* Set up the modified control endpoint 0 */ - xhci_endpoint_copy(ctrl, ctrl->devs[slot_id]->in_ctx, - ctrl->devs[slot_id]->out_ctx, ep_index); - in_ctx = ctrl->devs[slot_id]->in_ctx; - ep_ctx = xhci_get_ep_ctx(ctrl, in_ctx, ep_index); - ep_ctx->ep_info2 &= cpu_to_le32(~MAX_PACKET_MASK); - ep_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(max_packet_size)); - - /* - * Set up the input context flags for the command - * FIXME: This won't work if a non-default control endpoint - * changes max packet sizes. - */ - ctrl_ctx = xhci_get_input_control_ctx(in_ctx); - ctrl_ctx->add_flags = cpu_to_le32(EP0_FLAG); - ctrl_ctx->drop_flags = 0; - - ret = xhci_configure_endpoints(udev, true); - } - return ret; -} - -/** - * Clears the Change bits of the Port Status Register - * - * @param wValue request value - * @param wIndex request index - * @param addr address of posrt status register - * @param port_status state of port status register - * @return none - */ -static void xhci_clear_port_change_bit(u16 wValue, - u16 wIndex, volatile uint32_t *addr, u32 port_status) -{ - char *port_change_bit; - u32 status; - - switch (wValue) { - case USB_PORT_FEAT_C_RESET: - status = PORT_RC; - port_change_bit = "reset"; - break; - case USB_PORT_FEAT_C_CONNECTION: - status = PORT_CSC; - port_change_bit = "connect"; - break; - case USB_PORT_FEAT_C_OVER_CURRENT: - status = PORT_OCC; - port_change_bit = "over-current"; - break; - case USB_PORT_FEAT_C_ENABLE: - status = PORT_PEC; - port_change_bit = "enable/disable"; - break; - case USB_PORT_FEAT_C_SUSPEND: - status = PORT_PLC; - port_change_bit = "suspend/resume"; - break; - default: - /* Should never happen */ - return; - } - - /* Change bits are all write 1 to clear */ - xhci_writel(addr, port_status | status); - - port_status = xhci_readl(addr); - debug("clear port %s change, actual port %d status = 0x%x\n", - port_change_bit, wIndex, port_status); -} - -/** - * Save Read Only (RO) bits and save read/write bits where - * writing a 0 clears the bit and writing a 1 sets the bit (RWS). - * For all other types (RW1S, RW1CS, RW, and RZ), writing a '0' has no effect. - * - * @param state state of the Port Status and Control Regsiter - * @return a value that would result in the port being in the - * same state, if the value was written to the port - * status control register. - */ -static u32 xhci_port_state_to_neutral(u32 state) -{ - /* Save read-only status and port state */ - return (state & XHCI_PORT_RO) | (state & XHCI_PORT_RWS); -} - -/** - * Submits the Requests to the XHCI Host Controller - * - * @param udev pointer to the USB device structure - * @param pipe contains the DIR_IN or OUT , devnum - * @param buffer buffer to be read/written based on the request - * @return returns 0 if successful else -1 on failure - */ -static int xhci_submit_root(struct usb_device *udev, unsigned long pipe, - void *buffer, struct devrequest *req) -{ - uint8_t tmpbuf[4]; - u16 typeReq; - void *srcptr = NULL; - int len, srclen; - uint32_t reg; - volatile uint32_t *status_reg; - struct xhci_ctrl *ctrl = udev->controller; - struct xhci_hcor *hcor = ctrl->hcor; - - if (((req->requesttype & USB_RT_PORT) && - le16_to_cpu(req->index)) > CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS) { - printf("The request port(%d) is not configured\n", - le16_to_cpu(req->index) - 1); - return -EINVAL; - } - - status_reg = (volatile uint32_t *) - (&hcor->portregs[le16_to_cpu(req->index) - 1].or_portsc); - srclen = 0; - - typeReq = req->request | req->requesttype << 8; - - switch (typeReq) { - case DeviceRequest | USB_REQ_GET_DESCRIPTOR: - switch (le16_to_cpu(req->value) >> 8) { - case USB_DT_DEVICE: - debug("USB_DT_DEVICE request\n"); - srcptr = &descriptor.device; - srclen = 0x12; - break; - case USB_DT_CONFIG: - debug("USB_DT_CONFIG config\n"); - srcptr = &descriptor.config; - srclen = 0x19; - break; - case USB_DT_STRING: - debug("USB_DT_STRING config\n"); - switch (le16_to_cpu(req->value) & 0xff) { - case 0: /* Language */ - srcptr = "\4\3\11\4"; - srclen = 4; - break; - case 1: /* Vendor String */ - srcptr = "\16\3u\0-\0b\0o\0o\0t\0"; - srclen = 14; - break; - case 2: /* Product Name */ - srcptr = "\52\3X\0H\0C\0I\0 " - "\0H\0o\0s\0t\0 " - "\0C\0o\0n\0t\0r\0o\0l\0l\0e\0r\0"; - srclen = 42; - break; - default: - printf("unknown value DT_STRING %x\n", - le16_to_cpu(req->value)); - goto unknown; - } - break; - default: - printf("unknown value %x\n", le16_to_cpu(req->value)); - goto unknown; - } - break; - case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8): - switch (le16_to_cpu(req->value) >> 8) { - case USB_DT_HUB: - debug("USB_DT_HUB config\n"); - srcptr = &descriptor.hub; - srclen = 0x8; - break; - default: - printf("unknown value %x\n", le16_to_cpu(req->value)); - goto unknown; - } - break; - case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8): - debug("USB_REQ_SET_ADDRESS\n"); - ctrl->rootdev = le16_to_cpu(req->value); - break; - case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: - /* Do nothing */ - break; - case USB_REQ_GET_STATUS | ((USB_DIR_IN | USB_RT_HUB) << 8): - tmpbuf[0] = 1; /* USB_STATUS_SELFPOWERED */ - tmpbuf[1] = 0; - srcptr = tmpbuf; - srclen = 2; - break; - case USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8): - memset(tmpbuf, 0, 4); - reg = xhci_readl(status_reg); - if (reg & PORT_CONNECT) { - tmpbuf[0] |= USB_PORT_STAT_CONNECTION; - switch (reg & DEV_SPEED_MASK) { - case XDEV_FS: - debug("SPEED = FULLSPEED\n"); - break; - case XDEV_LS: - debug("SPEED = LOWSPEED\n"); - tmpbuf[1] |= USB_PORT_STAT_LOW_SPEED >> 8; - break; - case XDEV_HS: - debug("SPEED = HIGHSPEED\n"); - tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8; - break; - case XDEV_SS: - debug("SPEED = SUPERSPEED\n"); - tmpbuf[1] |= USB_PORT_STAT_SUPER_SPEED >> 8; - break; - } - } - if (reg & PORT_PE) - tmpbuf[0] |= USB_PORT_STAT_ENABLE; - if ((reg & PORT_PLS_MASK) == XDEV_U3) - tmpbuf[0] |= USB_PORT_STAT_SUSPEND; - if (reg & PORT_OC) - tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT; - if (reg & PORT_RESET) - tmpbuf[0] |= USB_PORT_STAT_RESET; - if (reg & PORT_POWER) - /* - * XXX: This Port power bit (for USB 3.0 hub) - * we are faking in USB 2.0 hub port status; - * since there's a change in bit positions in - * two: - * USB 2.0 port status PP is at position[8] - * USB 3.0 port status PP is at position[9] - * So, we are still keeping it at position [8] - */ - tmpbuf[1] |= USB_PORT_STAT_POWER >> 8; - if (reg & PORT_CSC) - tmpbuf[2] |= USB_PORT_STAT_C_CONNECTION; - if (reg & PORT_PEC) - tmpbuf[2] |= USB_PORT_STAT_C_ENABLE; - if (reg & PORT_OCC) - tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT; - if (reg & PORT_RC) - tmpbuf[2] |= USB_PORT_STAT_C_RESET; - - srcptr = tmpbuf; - srclen = 4; - break; - case USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8): - reg = xhci_readl(status_reg); - reg = xhci_port_state_to_neutral(reg); - switch (le16_to_cpu(req->value)) { - case USB_PORT_FEAT_ENABLE: - reg |= PORT_PE; - xhci_writel(status_reg, reg); - break; - case USB_PORT_FEAT_POWER: - reg |= PORT_POWER; - xhci_writel(status_reg, reg); - break; - case USB_PORT_FEAT_RESET: - reg |= PORT_RESET; - xhci_writel(status_reg, reg); - break; - default: - printf("unknown feature %x\n", le16_to_cpu(req->value)); - goto unknown; - } - break; - case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8): - reg = xhci_readl(status_reg); - reg = xhci_port_state_to_neutral(reg); - switch (le16_to_cpu(req->value)) { - case USB_PORT_FEAT_ENABLE: - reg &= ~PORT_PE; - break; - case USB_PORT_FEAT_POWER: - reg &= ~PORT_POWER; - break; - case USB_PORT_FEAT_C_RESET: - case USB_PORT_FEAT_C_CONNECTION: - case USB_PORT_FEAT_C_OVER_CURRENT: - case USB_PORT_FEAT_C_ENABLE: - xhci_clear_port_change_bit((le16_to_cpu(req->value)), - le16_to_cpu(req->index), - status_reg, reg); - break; - default: - printf("unknown feature %x\n", le16_to_cpu(req->value)); - goto unknown; - } - xhci_writel(status_reg, reg); - break; - default: - puts("Unknown request\n"); - goto unknown; - } - - debug("scrlen = %d\n req->length = %d\n", - srclen, le16_to_cpu(req->length)); - - len = min(srclen, le16_to_cpu(req->length)); - - if (srcptr != NULL && len > 0) - memcpy(buffer, srcptr, len); - else - debug("Len is 0\n"); - - udev->act_len = len; - udev->status = 0; - - return 0; - -unknown: - udev->act_len = 0; - udev->status = USB_ST_STALLED; - - return -ENODEV; -} - -/** - * Submits the INT request to XHCI Host cotroller - * - * @param udev pointer to the USB device - * @param pipe contains the DIR_IN or OUT , devnum - * @param buffer buffer to be read/written based on the request - * @param length length of the buffer - * @param interval interval of the interrupt - * @return 0 - */ -int -submit_int_msg(struct usb_device *udev, unsigned long pipe, void *buffer, - int length, int interval) -{ - /* - * TODO: Not addressing any interrupt type transfer requests - * Add support for it later. - */ - return -EINVAL; -} - -/** - * submit the BULK type of request to the USB Device - * - * @param udev pointer to the USB device - * @param pipe contains the DIR_IN or OUT , devnum - * @param buffer buffer to be read/written based on the request - * @param length length of the buffer - * @return returns 0 if successful else -1 on failure - */ -int -submit_bulk_msg(struct usb_device *udev, unsigned long pipe, void *buffer, - int length) -{ - if (usb_pipetype(pipe) != PIPE_BULK) { - printf("non-bulk pipe (type=%lu)", usb_pipetype(pipe)); - return -EINVAL; - } - - return xhci_bulk_tx(udev, pipe, length, buffer); -} - -/** - * submit the control type of request to the Root hub/Device based on the devnum - * - * @param udev pointer to the USB device - * @param pipe contains the DIR_IN or OUT , devnum - * @param buffer buffer to be read/written based on the request - * @param length length of the buffer - * @param setup Request type - * @return returns 0 if successful else -1 on failure - */ -int -submit_control_msg(struct usb_device *udev, unsigned long pipe, void *buffer, - int length, struct devrequest *setup) -{ - struct xhci_ctrl *ctrl = udev->controller; - int ret = 0; - - if (usb_pipetype(pipe) != PIPE_CONTROL) { - printf("non-control pipe (type=%lu)", usb_pipetype(pipe)); - return -EINVAL; - } - - if (usb_pipedevice(pipe) == ctrl->rootdev) - return xhci_submit_root(udev, pipe, buffer, setup); - - if (setup->request == USB_REQ_SET_ADDRESS) - return xhci_address_device(udev); - - if (setup->request == USB_REQ_SET_CONFIGURATION) { - ret = xhci_set_configuration(udev); - if (ret) { - puts("Failed to configure xHCI endpoint\n"); - return ret; - } - } - - return xhci_ctrl_tx(udev, pipe, setup, length, buffer); -} - -/** - * Intialises the XHCI host controller - * and allocates the necessary data structures - * - * @param index index to the host controller data structure - * @return pointer to the intialised controller - */ -int usb_lowlevel_init(int index, enum usb_init_type init, void **controller) -{ - uint32_t val; - uint32_t val2; - uint32_t reg; - struct xhci_hccr *hccr; - struct xhci_hcor *hcor; - struct xhci_ctrl *ctrl; - - if (xhci_hcd_init(index, &hccr, (struct xhci_hcor **)&hcor) != 0) - return -ENODEV; - - if (xhci_reset(hcor) != 0) - return -ENODEV; - - ctrl = &xhcic[index]; - - ctrl->hccr = hccr; - ctrl->hcor = hcor; - - /* - * Program the Number of Device Slots Enabled field in the CONFIG - * register with the max value of slots the HC can handle. - */ - val = (xhci_readl(&hccr->cr_hcsparams1) & HCS_SLOTS_MASK); - val2 = xhci_readl(&hcor->or_config); - val |= (val2 & ~HCS_SLOTS_MASK); - xhci_writel(&hcor->or_config, val); - - /* initializing xhci data structures */ - if (xhci_mem_init(ctrl, hccr, hcor) < 0) - return -ENOMEM; - - reg = xhci_readl(&hccr->cr_hcsparams1); - descriptor.hub.bNbrPorts = ((reg & HCS_MAX_PORTS_MASK) >> - HCS_MAX_PORTS_SHIFT); - printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts); - - /* Port Indicators */ - reg = xhci_readl(&hccr->cr_hccparams); - if (HCS_INDICATOR(reg)) - put_unaligned(get_unaligned(&descriptor.hub.wHubCharacteristics) - | 0x80, &descriptor.hub.wHubCharacteristics); - - /* Port Power Control */ - if (HCC_PPC(reg)) - put_unaligned(get_unaligned(&descriptor.hub.wHubCharacteristics) - | 0x01, &descriptor.hub.wHubCharacteristics); - - if (xhci_start(hcor)) { - xhci_reset(hcor); - return -ENODEV; - } - - /* Zero'ing IRQ control register and IRQ pending register */ - xhci_writel(&ctrl->ir_set->irq_control, 0x0); - xhci_writel(&ctrl->ir_set->irq_pending, 0x0); - - reg = HC_VERSION(xhci_readl(&hccr->cr_capbase)); - printf("USB XHCI %x.%02x\n", reg >> 8, reg & 0xff); - - *controller = &xhcic[index]; - - return 0; -} - -/** - * Stops the XHCI host controller - * and cleans up all the related data structures - * - * @param index index to the host controller data structure - * @return none - */ -int usb_lowlevel_stop(int index) -{ - struct xhci_ctrl *ctrl = (xhcic + index); - u32 temp; - - xhci_reset(ctrl->hcor); - - debug("// Disabling event ring interrupts\n"); - temp = xhci_readl(&ctrl->hcor->or_usbsts); - xhci_writel(&ctrl->hcor->or_usbsts, temp & ~STS_EINT); - temp = xhci_readl(&ctrl->ir_set->irq_pending); - xhci_writel(&ctrl->ir_set->irq_pending, ER_IRQ_DISABLE(temp)); - - xhci_hcd_stop(index); - - xhci_cleanup(ctrl); - - return 0; -} |