diff options
Diffstat (limited to 'drivers/usb/host/xhci.c')
| -rw-r--r-- | drivers/usb/host/xhci.c | 312 |
1 files changed, 258 insertions, 54 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index f8b5ce4..0b09643 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -21,6 +21,7 @@ */ #include <common.h> +#include <dm.h> #include <asm/byteorder.h> #include <usb.h> #include <malloc.h> @@ -108,7 +109,25 @@ static struct descriptor { }, }; +#ifndef CONFIG_DM_USB static struct xhci_ctrl xhcic[CONFIG_USB_MAX_CONTROLLER_COUNT]; +#endif + +struct xhci_ctrl *xhci_get_ctrl(struct usb_device *udev) +{ +#ifdef CONFIG_DM_USB + struct udevice *dev; + + /* Find the USB controller */ + for (dev = udev->dev; + device_get_uclass_id(dev) != UCLASS_USB; + dev = dev->parent) + ; + return dev_get_priv(dev); +#else + return udev->controller; +#endif +} /** * Waits for as per specified amount of time @@ -250,7 +269,7 @@ 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; + struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); union xhci_trb *event; virt_dev = ctrl->devs[udev->slot_id]; @@ -298,7 +317,7 @@ static int xhci_set_configuration(struct usb_device *udev) int ep_index; unsigned int dir; unsigned int ep_type; - struct xhci_ctrl *ctrl = udev->controller; + struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); int num_of_ep; int ep_flag = 0; u64 trb_64 = 0; @@ -379,10 +398,10 @@ static int xhci_set_configuration(struct usb_device *udev) * @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) +static int xhci_address_device(struct usb_device *udev, int root_portnr) { int ret = 0; - struct xhci_ctrl *ctrl = udev->controller; + struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); struct xhci_slot_ctx *slot_ctx; struct xhci_input_control_ctx *ctrl_ctx; struct xhci_virt_device *virt_dev; @@ -395,8 +414,9 @@ static int xhci_address_device(struct usb_device *udev) * 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); + debug("Setting up addressable devices %p\n", ctrl->dcbaa); + xhci_setup_addressable_virt_dev(ctrl, udev->slot_id, udev->speed, + root_portnr); ctrl_ctx = xhci_get_input_control_ctx(virt_dev->in_ctx); ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG); @@ -461,10 +481,10 @@ static int xhci_address_device(struct usb_device *udev) * @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) +int _xhci_alloc_device(struct usb_device *udev) { + struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); union xhci_trb *event; - struct xhci_ctrl *ctrl = udev->controller; int ret; /* @@ -486,7 +506,7 @@ int usb_alloc_device(struct usb_device *udev) xhci_acknowledge_event(ctrl); - ret = xhci_alloc_virt_device(udev); + ret = xhci_alloc_virt_device(ctrl, udev->slot_id); if (ret < 0) { /* * TODO: Unsuccessful Address Device command shall leave @@ -499,6 +519,13 @@ int usb_alloc_device(struct usb_device *udev) return 0; } +#ifndef CONFIG_DM_USB +int usb_alloc_device(struct usb_device *udev) +{ + return _xhci_alloc_device(udev); +} +#endif + /* * 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 @@ -510,7 +537,7 @@ int usb_alloc_device(struct usb_device *udev) */ int xhci_check_maxpacket(struct usb_device *udev) { - struct xhci_ctrl *ctrl = udev->controller; + struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); unsigned int slot_id = udev->slot_id; int ep_index = 0; /* control endpoint */ struct xhci_container_ctx *in_ctx; @@ -640,7 +667,7 @@ static int xhci_submit_root(struct usb_device *udev, unsigned long pipe, int len, srclen; uint32_t reg; volatile uint32_t *status_reg; - struct xhci_ctrl *ctrl = udev->controller; + struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); struct xhci_hcor *hcor = ctrl->hcor; if ((req->requesttype & USB_RT_PORT) && @@ -677,7 +704,7 @@ static int xhci_submit_root(struct usb_device *udev, unsigned long pipe, srclen = 4; break; case 1: /* Vendor String */ - srcptr = "\16\3u\0-\0b\0o\0o\0t\0"; + srcptr = "\16\3U\0-\0B\0o\0o\0t\0"; srclen = 14; break; case 2: /* Product Name */ @@ -858,9 +885,8 @@ unknown: * @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) +static int _xhci_submit_int_msg(struct usb_device *udev, unsigned long pipe, + void *buffer, int length, int interval) { /* * TODO: Not addressing any interrupt type transfer requests @@ -878,9 +904,8 @@ submit_int_msg(struct usb_device *udev, unsigned long pipe, void *buffer, * @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) +static int _xhci_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)); @@ -898,13 +923,14 @@ submit_bulk_msg(struct usb_device *udev, unsigned long pipe, void *buffer, * @param buffer buffer to be read/written based on the request * @param length length of the buffer * @param setup Request type + * @param root_portnr Root port number that this device is on * @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) +static int _xhci_submit_control_msg(struct usb_device *udev, unsigned long pipe, + void *buffer, int length, + struct devrequest *setup, int root_portnr) { - struct xhci_ctrl *ctrl = udev->controller; + struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); int ret = 0; if (usb_pipetype(pipe) != PIPE_CONTROL) { @@ -916,7 +942,7 @@ submit_control_msg(struct usb_device *udev, unsigned long pipe, void *buffer, return xhci_submit_root(udev, pipe, buffer, setup); if (setup->request == USB_REQ_SET_ADDRESS) - return xhci_address_device(udev); + return xhci_address_device(udev, root_portnr); if (setup->request == USB_REQ_SET_CONFIGURATION) { ret = xhci_set_configuration(udev); @@ -929,33 +955,16 @@ submit_control_msg(struct usb_device *udev, unsigned long pipe, void *buffer, 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) +static int xhci_lowlevel_init(struct xhci_ctrl *ctrl) { + struct xhci_hccr *hccr; + struct xhci_hcor *hcor; 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; + hccr = ctrl->hccr; + hcor = ctrl->hcor; /* * Program the Number of Device Slots Enabled field in the CONFIG * register with the max value of slots the HC can handle. @@ -997,11 +1006,82 @@ int usb_lowlevel_init(int index, enum usb_init_type init, void **controller) reg = HC_VERSION(xhci_readl(&hccr->cr_capbase)); printf("USB XHCI %x.%02x\n", reg >> 8, reg & 0xff); - *controller = &xhcic[index]; + return 0; +} + +static int xhci_lowlevel_stop(struct xhci_ctrl *ctrl) +{ + 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)); return 0; } +#ifndef CONFIG_DM_USB +int submit_control_msg(struct usb_device *udev, unsigned long pipe, + void *buffer, int length, struct devrequest *setup) +{ + struct usb_device *hop = udev; + + if (hop->parent) + while (hop->parent->parent) + hop = hop->parent; + + return _xhci_submit_control_msg(udev, pipe, buffer, length, setup, + hop->portnr); +} + +int submit_bulk_msg(struct usb_device *udev, unsigned long pipe, void *buffer, + int length) +{ + return _xhci_submit_bulk_msg(udev, pipe, buffer, length); +} + +int submit_int_msg(struct usb_device *udev, unsigned long pipe, void *buffer, + int length, int interval) +{ + return _xhci_submit_int_msg(udev, pipe, buffer, length, interval); +} + +/** + * 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) +{ + struct xhci_hccr *hccr; + struct xhci_hcor *hcor; + struct xhci_ctrl *ctrl; + int ret; + + 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; + + ret = xhci_lowlevel_init(ctrl); + + *controller = &xhcic[index]; + + return ret; +} + /** * Stops the XHCI host controller * and cleans up all the related data structures @@ -1012,19 +1092,143 @@ int usb_lowlevel_init(int index, enum usb_init_type init, void **controller) int usb_lowlevel_stop(int index) { struct xhci_ctrl *ctrl = (xhcic + index); - u32 temp; - xhci_reset(ctrl->hcor); + xhci_lowlevel_stop(ctrl); + xhci_hcd_stop(index); + xhci_cleanup(ctrl); - 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)); + return 0; +} +#endif /* CONFIG_DM_USB */ - xhci_hcd_stop(index); +#ifdef CONFIG_DM_USB +/* +static struct usb_device *get_usb_device(struct udevice *dev) +{ + struct usb_device *udev; + if (device_get_uclass_id(dev) == UCLASS_USB) + udev = dev_get_uclass_priv(dev); + else + udev = dev_get_parentdata(dev); + + return udev; +} +*/ +static bool is_root_hub(struct udevice *dev) +{ + if (device_get_uclass_id(dev->parent) != UCLASS_USB_HUB) + return true; + + return false; +} + +static int xhci_submit_control_msg(struct udevice *dev, struct usb_device *udev, + unsigned long pipe, void *buffer, int length, + struct devrequest *setup) +{ + struct usb_device *uhop; + struct udevice *hub; + int root_portnr = 0; + + debug("%s: dev='%s', udev=%p, udev->dev='%s', portnr=%d\n", __func__, + dev->name, udev, udev->dev->name, udev->portnr); + hub = udev->dev; + if (device_get_uclass_id(hub) == UCLASS_USB_HUB) { + /* Figure out our port number on the root hub */ + if (is_root_hub(hub)) { + root_portnr = udev->portnr; + } else { + while (!is_root_hub(hub->parent)) + hub = hub->parent; + uhop = dev_get_parentdata(hub); + root_portnr = uhop->portnr; + } + } +/* + struct usb_device *hop = udev; + + if (hop->parent) + while (hop->parent->parent) + hop = hop->parent; +*/ + return _xhci_submit_control_msg(udev, pipe, buffer, length, setup, + root_portnr); +} + +static int xhci_submit_bulk_msg(struct udevice *dev, struct usb_device *udev, + unsigned long pipe, void *buffer, int length) +{ + debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); + return _xhci_submit_bulk_msg(udev, pipe, buffer, length); +} + +static int xhci_submit_int_msg(struct udevice *dev, struct usb_device *udev, + unsigned long pipe, void *buffer, int length, + int interval) +{ + debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); + return _xhci_submit_int_msg(udev, pipe, buffer, length, interval); +} + +static int xhci_alloc_device(struct udevice *dev, struct usb_device *udev) +{ + debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); + return _xhci_alloc_device(udev); +} + +int xhci_register(struct udevice *dev, struct xhci_hccr *hccr, + struct xhci_hcor *hcor) +{ + struct xhci_ctrl *ctrl = dev_get_priv(dev); + struct usb_bus_priv *priv = dev_get_uclass_priv(dev); + int ret; + + debug("%s: dev='%s', ctrl=%p, hccr=%p, hcor=%p\n", __func__, dev->name, + ctrl, hccr, hcor); + + ctrl->dev = dev; + + /* + * XHCI needs to issue a Address device command to setup + * proper device context structures, before it can interact + * with the device. So a get_descriptor will fail before any + * of that is done for XHCI unlike EHCI. + */ + priv->desc_before_addr = false; + + ret = xhci_reset(hcor); + if (ret) + goto err; + + ctrl->hccr = hccr; + ctrl->hcor = hcor; + ret = xhci_lowlevel_init(ctrl); + if (ret) + goto err; + + return 0; +err: + free(ctrl); + debug("%s: failed, ret=%d\n", __func__, ret); + return ret; +} + +int xhci_deregister(struct udevice *dev) +{ + struct xhci_ctrl *ctrl = dev_get_priv(dev); + + xhci_lowlevel_stop(ctrl); xhci_cleanup(ctrl); return 0; } + +struct dm_usb_ops xhci_usb_ops = { + .control = xhci_submit_control_msg, + .bulk = xhci_submit_bulk_msg, + .interrupt = xhci_submit_int_msg, + .alloc_device = xhci_alloc_device, +}; + +#endif |