2017-11-03 10:28:30 +00:00
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// SPDX-License-Identifier: GPL-2.0
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2015-11-24 11:09:55 +00:00
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/*
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* Copyright (c) 2015 MediaTek Inc.
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* Author:
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* Zhigang.Wei <zhigang.wei@mediatek.com>
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* Chunfeng.Yun <chunfeng.yun@mediatek.com>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include "xhci.h"
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#include "xhci-mtk.h"
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2018-09-20 16:13:35 +00:00
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#define SSP_BW_BOUNDARY 130000
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2015-11-24 11:09:55 +00:00
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#define SS_BW_BOUNDARY 51000
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/* table 5-5. High-speed Isoc Transaction Limits in usb_20 spec */
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#define HS_BW_BOUNDARY 6144
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/* usb2 spec section11.18.1: at most 188 FS bytes per microframe */
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#define FS_PAYLOAD_MAX 188
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2018-09-20 16:13:33 +00:00
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/*
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* max number of microframes for split transfer,
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* for fs isoc in : 1 ss + 1 idle + 7 cs
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*/
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#define TT_MICROFRAMES_MAX 9
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2015-11-24 11:09:55 +00:00
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/* mtk scheduler bitmasks */
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2018-09-20 16:13:35 +00:00
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#define EP_BPKTS(p) ((p) & 0x7f)
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2015-11-24 11:09:55 +00:00
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#define EP_BCSCOUNT(p) (((p) & 0x7) << 8)
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#define EP_BBM(p) ((p) << 11)
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#define EP_BOFFSET(p) ((p) & 0x3fff)
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#define EP_BREPEAT(p) (((p) & 0x7fff) << 16)
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static int is_fs_or_ls(enum usb_device_speed speed)
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{
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return speed == USB_SPEED_FULL || speed == USB_SPEED_LOW;
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}
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/*
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* get the index of bandwidth domains array which @ep belongs to.
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*
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* the bandwidth domain array is saved to @sch_array of struct xhci_hcd_mtk,
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* each HS root port is treated as a single bandwidth domain,
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* but each SS root port is treated as two bandwidth domains, one for IN eps,
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* one for OUT eps.
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* @real_port value is defined as follow according to xHCI spec:
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* 1 for SSport0, ..., N+1 for SSportN, N+2 for HSport0, N+3 for HSport1, etc
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* so the bandwidth domain array is organized as follow for simplification:
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* SSport0-OUT, SSport0-IN, ..., SSportX-OUT, SSportX-IN, HSport0, ..., HSportY
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*/
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static int get_bw_index(struct xhci_hcd *xhci, struct usb_device *udev,
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struct usb_host_endpoint *ep)
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{
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struct xhci_virt_device *virt_dev;
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int bw_index;
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virt_dev = xhci->devs[udev->slot_id];
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2018-09-20 16:13:35 +00:00
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if (udev->speed >= USB_SPEED_SUPER) {
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2015-11-24 11:09:55 +00:00
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if (usb_endpoint_dir_out(&ep->desc))
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bw_index = (virt_dev->real_port - 1) * 2;
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else
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bw_index = (virt_dev->real_port - 1) * 2 + 1;
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} else {
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/* add one more for each SS port */
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2018-05-21 13:40:03 +00:00
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bw_index = virt_dev->real_port + xhci->usb3_rhub.num_ports - 1;
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2015-11-24 11:09:55 +00:00
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}
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return bw_index;
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}
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2018-09-20 16:13:33 +00:00
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static u32 get_esit(struct xhci_ep_ctx *ep_ctx)
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{
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u32 esit;
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esit = 1 << CTX_TO_EP_INTERVAL(le32_to_cpu(ep_ctx->ep_info));
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if (esit > XHCI_MTK_MAX_ESIT)
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esit = XHCI_MTK_MAX_ESIT;
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return esit;
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}
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2018-09-20 16:13:34 +00:00
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static struct mu3h_sch_tt *find_tt(struct usb_device *udev)
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{
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struct usb_tt *utt = udev->tt;
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struct mu3h_sch_tt *tt, **tt_index, **ptt;
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unsigned int port;
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bool allocated_index = false;
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if (!utt)
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return NULL; /* Not below a TT */
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/*
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* Find/create our data structure.
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* For hubs with a single TT, we get it directly.
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* For hubs with multiple TTs, there's an extra level of pointers.
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*/
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tt_index = NULL;
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if (utt->multi) {
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tt_index = utt->hcpriv;
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if (!tt_index) { /* Create the index array */
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tt_index = kcalloc(utt->hub->maxchild,
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sizeof(*tt_index), GFP_KERNEL);
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if (!tt_index)
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return ERR_PTR(-ENOMEM);
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utt->hcpriv = tt_index;
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allocated_index = true;
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}
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port = udev->ttport - 1;
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ptt = &tt_index[port];
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} else {
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port = 0;
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ptt = (struct mu3h_sch_tt **) &utt->hcpriv;
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}
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tt = *ptt;
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if (!tt) { /* Create the mu3h_sch_tt */
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tt = kzalloc(sizeof(*tt), GFP_KERNEL);
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if (!tt) {
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if (allocated_index) {
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utt->hcpriv = NULL;
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kfree(tt_index);
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}
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return ERR_PTR(-ENOMEM);
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}
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INIT_LIST_HEAD(&tt->ep_list);
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tt->usb_tt = utt;
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tt->tt_port = port;
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*ptt = tt;
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}
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return tt;
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}
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/* Release the TT above udev, if it's not in use */
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static void drop_tt(struct usb_device *udev)
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{
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struct usb_tt *utt = udev->tt;
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struct mu3h_sch_tt *tt, **tt_index, **ptt;
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int i, cnt;
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if (!utt || !utt->hcpriv)
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return; /* Not below a TT, or never allocated */
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cnt = 0;
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if (utt->multi) {
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tt_index = utt->hcpriv;
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ptt = &tt_index[udev->ttport - 1];
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/* How many entries are left in tt_index? */
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for (i = 0; i < utt->hub->maxchild; ++i)
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cnt += !!tt_index[i];
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} else {
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tt_index = NULL;
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ptt = (struct mu3h_sch_tt **)&utt->hcpriv;
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}
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tt = *ptt;
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if (!tt || !list_empty(&tt->ep_list))
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return; /* never allocated , or still in use*/
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*ptt = NULL;
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kfree(tt);
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if (cnt == 1) {
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utt->hcpriv = NULL;
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kfree(tt_index);
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}
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}
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2018-09-20 16:13:33 +00:00
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static struct mu3h_sch_ep_info *create_sch_ep(struct usb_device *udev,
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struct usb_host_endpoint *ep, struct xhci_ep_ctx *ep_ctx)
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{
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struct mu3h_sch_ep_info *sch_ep;
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2018-09-20 16:13:34 +00:00
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struct mu3h_sch_tt *tt = NULL;
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2018-09-20 16:13:33 +00:00
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u32 len_bw_budget_table;
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size_t mem_size;
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if (is_fs_or_ls(udev->speed))
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len_bw_budget_table = TT_MICROFRAMES_MAX;
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2018-09-20 16:13:35 +00:00
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else if ((udev->speed >= USB_SPEED_SUPER)
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2018-09-20 16:13:33 +00:00
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&& usb_endpoint_xfer_isoc(&ep->desc))
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len_bw_budget_table = get_esit(ep_ctx);
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else
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len_bw_budget_table = 1;
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mem_size = sizeof(struct mu3h_sch_ep_info) +
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len_bw_budget_table * sizeof(u32);
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sch_ep = kzalloc(mem_size, GFP_KERNEL);
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if (!sch_ep)
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return ERR_PTR(-ENOMEM);
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2018-09-20 16:13:34 +00:00
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if (is_fs_or_ls(udev->speed)) {
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tt = find_tt(udev);
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if (IS_ERR(tt)) {
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kfree(sch_ep);
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return ERR_PTR(-ENOMEM);
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}
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}
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sch_ep->sch_tt = tt;
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2018-09-20 16:13:33 +00:00
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sch_ep->ep = ep;
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return sch_ep;
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}
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2015-11-24 11:09:55 +00:00
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static void setup_sch_info(struct usb_device *udev,
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struct xhci_ep_ctx *ep_ctx, struct mu3h_sch_ep_info *sch_ep)
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{
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u32 ep_type;
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2018-09-20 16:13:33 +00:00
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u32 maxpkt;
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2015-11-24 11:09:55 +00:00
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u32 max_burst;
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u32 mult;
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u32 esit_pkts;
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2018-09-20 16:13:31 +00:00
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u32 max_esit_payload;
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2018-09-20 16:13:33 +00:00
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u32 *bwb_table = sch_ep->bw_budget_table;
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int i;
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2015-11-24 11:09:55 +00:00
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ep_type = CTX_TO_EP_TYPE(le32_to_cpu(ep_ctx->ep_info2));
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2018-09-20 16:13:33 +00:00
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maxpkt = MAX_PACKET_DECODED(le32_to_cpu(ep_ctx->ep_info2));
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2015-11-24 11:09:55 +00:00
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max_burst = CTX_TO_MAX_BURST(le32_to_cpu(ep_ctx->ep_info2));
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mult = CTX_TO_EP_MULT(le32_to_cpu(ep_ctx->ep_info));
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2018-09-20 16:13:31 +00:00
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max_esit_payload =
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(CTX_TO_MAX_ESIT_PAYLOAD_HI(
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le32_to_cpu(ep_ctx->ep_info)) << 16) |
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CTX_TO_MAX_ESIT_PAYLOAD(le32_to_cpu(ep_ctx->tx_info));
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2015-11-24 11:09:55 +00:00
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2018-09-20 16:13:33 +00:00
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sch_ep->esit = get_esit(ep_ctx);
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2018-09-20 16:13:34 +00:00
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sch_ep->ep_type = ep_type;
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sch_ep->maxpkt = maxpkt;
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2015-11-24 11:09:55 +00:00
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sch_ep->offset = 0;
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sch_ep->burst_mode = 0;
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2018-09-20 16:13:33 +00:00
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sch_ep->repeat = 0;
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2015-11-24 11:09:55 +00:00
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if (udev->speed == USB_SPEED_HIGH) {
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sch_ep->cs_count = 0;
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/*
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* usb_20 spec section5.9
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* a single microframe is enough for HS synchromous endpoints
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* in a interval
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*/
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sch_ep->num_budget_microframes = 1;
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/*
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* xHCI spec section6.2.3.4
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* @max_burst is the number of additional transactions
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* opportunities per microframe
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*/
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sch_ep->pkts = max_burst + 1;
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2018-09-20 16:13:33 +00:00
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sch_ep->bw_cost_per_microframe = maxpkt * sch_ep->pkts;
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bwb_table[0] = sch_ep->bw_cost_per_microframe;
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2018-09-20 16:13:35 +00:00
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} else if (udev->speed >= USB_SPEED_SUPER) {
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2015-11-24 11:09:55 +00:00
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/* usb3_r1 spec section4.4.7 & 4.4.8 */
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sch_ep->cs_count = 0;
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2018-09-20 16:13:33 +00:00
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sch_ep->burst_mode = 1;
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2018-09-20 16:13:31 +00:00
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/*
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* some device's (d)wBytesPerInterval is set as 0,
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* then max_esit_payload is 0, so evaluate esit_pkts from
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* mult and burst
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*/
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2018-09-20 16:13:33 +00:00
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esit_pkts = DIV_ROUND_UP(max_esit_payload, maxpkt);
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2018-09-20 16:13:31 +00:00
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if (esit_pkts == 0)
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esit_pkts = (mult + 1) * (max_burst + 1);
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2015-11-24 11:09:55 +00:00
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if (ep_type == INT_IN_EP || ep_type == INT_OUT_EP) {
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sch_ep->pkts = esit_pkts;
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sch_ep->num_budget_microframes = 1;
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2018-09-20 16:13:33 +00:00
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bwb_table[0] = maxpkt * sch_ep->pkts;
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2015-11-24 11:09:55 +00:00
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}
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if (ep_type == ISOC_IN_EP || ep_type == ISOC_OUT_EP) {
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2018-09-20 16:13:33 +00:00
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u32 remainder;
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2018-09-20 16:13:32 +00:00
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if (sch_ep->esit == 1)
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sch_ep->pkts = esit_pkts;
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else if (esit_pkts <= sch_ep->esit)
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2015-11-24 11:09:55 +00:00
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sch_ep->pkts = 1;
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else
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sch_ep->pkts = roundup_pow_of_two(esit_pkts)
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/ sch_ep->esit;
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sch_ep->num_budget_microframes =
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DIV_ROUND_UP(esit_pkts, sch_ep->pkts);
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2018-09-20 16:13:33 +00:00
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sch_ep->repeat = !!(sch_ep->num_budget_microframes > 1);
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sch_ep->bw_cost_per_microframe = maxpkt * sch_ep->pkts;
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remainder = sch_ep->bw_cost_per_microframe;
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remainder *= sch_ep->num_budget_microframes;
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remainder -= (maxpkt * esit_pkts);
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for (i = 0; i < sch_ep->num_budget_microframes - 1; i++)
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bwb_table[i] = sch_ep->bw_cost_per_microframe;
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/* last one <= bw_cost_per_microframe */
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bwb_table[i] = remainder;
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2015-11-24 11:09:55 +00:00
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}
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} else if (is_fs_or_ls(udev->speed)) {
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sch_ep->pkts = 1; /* at most one packet for each microframe */
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2018-09-20 16:13:34 +00:00
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/*
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* num_budget_microframes and cs_count will be updated when
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* check TT for INT_OUT_EP, ISOC/INT_IN_EP type
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*/
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2018-09-20 16:13:33 +00:00
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sch_ep->cs_count = DIV_ROUND_UP(maxpkt, FS_PAYLOAD_MAX);
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2018-09-20 16:13:34 +00:00
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sch_ep->num_budget_microframes = sch_ep->cs_count;
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2018-09-20 16:13:33 +00:00
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sch_ep->bw_cost_per_microframe =
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(maxpkt < FS_PAYLOAD_MAX) ? maxpkt : FS_PAYLOAD_MAX;
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2015-11-24 11:09:55 +00:00
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2018-09-20 16:13:33 +00:00
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/* init budget table */
|
|
|
|
if (ep_type == ISOC_OUT_EP) {
|
|
|
|
for (i = 0; i < sch_ep->num_budget_microframes; i++)
|
|
|
|
bwb_table[i] = sch_ep->bw_cost_per_microframe;
|
|
|
|
} else if (ep_type == INT_OUT_EP) {
|
|
|
|
/* only first one consumes bandwidth, others as zero */
|
|
|
|
bwb_table[0] = sch_ep->bw_cost_per_microframe;
|
|
|
|
} else { /* INT_IN_EP or ISOC_IN_EP */
|
|
|
|
bwb_table[0] = 0; /* start split */
|
|
|
|
bwb_table[1] = 0; /* idle */
|
2018-09-20 16:13:34 +00:00
|
|
|
/*
|
|
|
|
* due to cs_count will be updated according to cs
|
|
|
|
* position, assign all remainder budget array
|
|
|
|
* elements as @bw_cost_per_microframe, but only first
|
|
|
|
* @num_budget_microframes elements will be used later
|
|
|
|
*/
|
|
|
|
for (i = 2; i < TT_MICROFRAMES_MAX; i++)
|
2018-09-20 16:13:33 +00:00
|
|
|
bwb_table[i] = sch_ep->bw_cost_per_microframe;
|
2015-11-24 11:09:55 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Get maximum bandwidth when we schedule at offset slot. */
|
|
|
|
static u32 get_max_bw(struct mu3h_sch_bw_info *sch_bw,
|
|
|
|
struct mu3h_sch_ep_info *sch_ep, u32 offset)
|
|
|
|
{
|
|
|
|
u32 num_esit;
|
|
|
|
u32 max_bw = 0;
|
2018-09-20 16:13:33 +00:00
|
|
|
u32 bw;
|
2015-11-24 11:09:55 +00:00
|
|
|
int i;
|
|
|
|
int j;
|
|
|
|
|
|
|
|
num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit;
|
|
|
|
for (i = 0; i < num_esit; i++) {
|
|
|
|
u32 base = offset + i * sch_ep->esit;
|
|
|
|
|
|
|
|
for (j = 0; j < sch_ep->num_budget_microframes; j++) {
|
2018-09-20 16:13:33 +00:00
|
|
|
bw = sch_bw->bus_bw[base + j] +
|
|
|
|
sch_ep->bw_budget_table[j];
|
|
|
|
if (bw > max_bw)
|
|
|
|
max_bw = bw;
|
2015-11-24 11:09:55 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return max_bw;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void update_bus_bw(struct mu3h_sch_bw_info *sch_bw,
|
2018-09-20 16:13:33 +00:00
|
|
|
struct mu3h_sch_ep_info *sch_ep, bool used)
|
2015-11-24 11:09:55 +00:00
|
|
|
{
|
|
|
|
u32 num_esit;
|
|
|
|
u32 base;
|
|
|
|
int i;
|
|
|
|
int j;
|
|
|
|
|
|
|
|
num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit;
|
|
|
|
for (i = 0; i < num_esit; i++) {
|
|
|
|
base = sch_ep->offset + i * sch_ep->esit;
|
2018-09-20 16:13:33 +00:00
|
|
|
for (j = 0; j < sch_ep->num_budget_microframes; j++) {
|
|
|
|
if (used)
|
|
|
|
sch_bw->bus_bw[base + j] +=
|
|
|
|
sch_ep->bw_budget_table[j];
|
|
|
|
else
|
|
|
|
sch_bw->bus_bw[base + j] -=
|
|
|
|
sch_ep->bw_budget_table[j];
|
|
|
|
}
|
2015-11-24 11:09:55 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-09-20 16:13:34 +00:00
|
|
|
static int check_sch_tt(struct usb_device *udev,
|
|
|
|
struct mu3h_sch_ep_info *sch_ep, u32 offset)
|
|
|
|
{
|
|
|
|
struct mu3h_sch_tt *tt = sch_ep->sch_tt;
|
|
|
|
u32 extra_cs_count;
|
|
|
|
u32 fs_budget_start;
|
|
|
|
u32 start_ss, last_ss;
|
|
|
|
u32 start_cs, last_cs;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
start_ss = offset % 8;
|
|
|
|
fs_budget_start = (start_ss + 1) % 8;
|
|
|
|
|
|
|
|
if (sch_ep->ep_type == ISOC_OUT_EP) {
|
|
|
|
last_ss = start_ss + sch_ep->cs_count - 1;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* usb_20 spec section11.18:
|
|
|
|
* must never schedule Start-Split in Y6
|
|
|
|
*/
|
|
|
|
if (!(start_ss == 7 || last_ss < 6))
|
|
|
|
return -ERANGE;
|
|
|
|
|
|
|
|
for (i = 0; i < sch_ep->cs_count; i++)
|
|
|
|
if (test_bit(offset + i, tt->split_bit_map))
|
|
|
|
return -ERANGE;
|
|
|
|
|
|
|
|
} else {
|
|
|
|
u32 cs_count = DIV_ROUND_UP(sch_ep->maxpkt, FS_PAYLOAD_MAX);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* usb_20 spec section11.18:
|
|
|
|
* must never schedule Start-Split in Y6
|
|
|
|
*/
|
|
|
|
if (start_ss == 6)
|
|
|
|
return -ERANGE;
|
|
|
|
|
|
|
|
/* one uframe for ss + one uframe for idle */
|
|
|
|
start_cs = (start_ss + 2) % 8;
|
|
|
|
last_cs = start_cs + cs_count - 1;
|
|
|
|
|
|
|
|
if (last_cs > 7)
|
|
|
|
return -ERANGE;
|
|
|
|
|
|
|
|
if (sch_ep->ep_type == ISOC_IN_EP)
|
|
|
|
extra_cs_count = (last_cs == 7) ? 1 : 2;
|
|
|
|
else /* ep_type : INTR IN / INTR OUT */
|
|
|
|
extra_cs_count = (fs_budget_start == 6) ? 1 : 2;
|
|
|
|
|
|
|
|
cs_count += extra_cs_count;
|
|
|
|
if (cs_count > 7)
|
|
|
|
cs_count = 7; /* HW limit */
|
|
|
|
|
|
|
|
for (i = 0; i < cs_count + 2; i++) {
|
|
|
|
if (test_bit(offset + i, tt->split_bit_map))
|
|
|
|
return -ERANGE;
|
|
|
|
}
|
|
|
|
|
|
|
|
sch_ep->cs_count = cs_count;
|
|
|
|
/* one for ss, the other for idle */
|
|
|
|
sch_ep->num_budget_microframes = cs_count + 2;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* if interval=1, maxp >752, num_budge_micoframe is larger
|
|
|
|
* than sch_ep->esit, will overstep boundary
|
|
|
|
*/
|
|
|
|
if (sch_ep->num_budget_microframes > sch_ep->esit)
|
|
|
|
sch_ep->num_budget_microframes = sch_ep->esit;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void update_sch_tt(struct usb_device *udev,
|
|
|
|
struct mu3h_sch_ep_info *sch_ep)
|
|
|
|
{
|
|
|
|
struct mu3h_sch_tt *tt = sch_ep->sch_tt;
|
|
|
|
u32 base, num_esit;
|
|
|
|
int i, j;
|
|
|
|
|
|
|
|
num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit;
|
|
|
|
for (i = 0; i < num_esit; i++) {
|
|
|
|
base = sch_ep->offset + i * sch_ep->esit;
|
|
|
|
for (j = 0; j < sch_ep->num_budget_microframes; j++)
|
|
|
|
set_bit(base + j, tt->split_bit_map);
|
|
|
|
}
|
|
|
|
|
|
|
|
list_add_tail(&sch_ep->tt_endpoint, &tt->ep_list);
|
|
|
|
}
|
|
|
|
|
2015-11-24 11:09:55 +00:00
|
|
|
static int check_sch_bw(struct usb_device *udev,
|
|
|
|
struct mu3h_sch_bw_info *sch_bw, struct mu3h_sch_ep_info *sch_ep)
|
|
|
|
{
|
|
|
|
u32 offset;
|
|
|
|
u32 esit;
|
|
|
|
u32 min_bw;
|
|
|
|
u32 min_index;
|
|
|
|
u32 worst_bw;
|
|
|
|
u32 bw_boundary;
|
2018-09-20 16:13:34 +00:00
|
|
|
u32 min_num_budget;
|
|
|
|
u32 min_cs_count;
|
|
|
|
bool tt_offset_ok = false;
|
|
|
|
int ret;
|
2015-11-24 11:09:55 +00:00
|
|
|
|
|
|
|
esit = sch_ep->esit;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Search through all possible schedule microframes.
|
|
|
|
* and find a microframe where its worst bandwidth is minimum.
|
|
|
|
*/
|
|
|
|
min_bw = ~0;
|
|
|
|
min_index = 0;
|
2018-09-20 16:13:34 +00:00
|
|
|
min_cs_count = sch_ep->cs_count;
|
|
|
|
min_num_budget = sch_ep->num_budget_microframes;
|
2015-11-24 11:09:55 +00:00
|
|
|
for (offset = 0; offset < esit; offset++) {
|
2018-09-20 16:13:34 +00:00
|
|
|
if (is_fs_or_ls(udev->speed)) {
|
|
|
|
ret = check_sch_tt(udev, sch_ep, offset);
|
|
|
|
if (ret)
|
|
|
|
continue;
|
|
|
|
else
|
|
|
|
tt_offset_ok = true;
|
|
|
|
}
|
|
|
|
|
2018-09-20 16:13:33 +00:00
|
|
|
if ((offset + sch_ep->num_budget_microframes) > sch_ep->esit)
|
2015-11-24 11:09:55 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
worst_bw = get_max_bw(sch_bw, sch_ep, offset);
|
|
|
|
if (min_bw > worst_bw) {
|
|
|
|
min_bw = worst_bw;
|
|
|
|
min_index = offset;
|
2018-09-20 16:13:34 +00:00
|
|
|
min_cs_count = sch_ep->cs_count;
|
|
|
|
min_num_budget = sch_ep->num_budget_microframes;
|
2015-11-24 11:09:55 +00:00
|
|
|
}
|
|
|
|
if (min_bw == 0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2018-09-20 16:13:35 +00:00
|
|
|
if (udev->speed == USB_SPEED_SUPER_PLUS)
|
|
|
|
bw_boundary = SSP_BW_BOUNDARY;
|
|
|
|
else if (udev->speed == USB_SPEED_SUPER)
|
|
|
|
bw_boundary = SS_BW_BOUNDARY;
|
|
|
|
else
|
|
|
|
bw_boundary = HS_BW_BOUNDARY;
|
2015-11-24 11:09:55 +00:00
|
|
|
|
|
|
|
/* check bandwidth */
|
2018-09-20 16:13:33 +00:00
|
|
|
if (min_bw > bw_boundary)
|
2015-11-24 11:09:55 +00:00
|
|
|
return -ERANGE;
|
|
|
|
|
2018-09-20 16:13:34 +00:00
|
|
|
sch_ep->offset = min_index;
|
|
|
|
sch_ep->cs_count = min_cs_count;
|
|
|
|
sch_ep->num_budget_microframes = min_num_budget;
|
|
|
|
|
|
|
|
if (is_fs_or_ls(udev->speed)) {
|
|
|
|
/* all offset for tt is not ok*/
|
|
|
|
if (!tt_offset_ok)
|
|
|
|
return -ERANGE;
|
|
|
|
|
|
|
|
update_sch_tt(udev, sch_ep);
|
|
|
|
}
|
|
|
|
|
2015-11-24 11:09:55 +00:00
|
|
|
/* update bus bandwidth info */
|
2018-09-20 16:13:33 +00:00
|
|
|
update_bus_bw(sch_bw, sch_ep, 1);
|
2015-11-24 11:09:55 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool need_bw_sch(struct usb_host_endpoint *ep,
|
|
|
|
enum usb_device_speed speed, int has_tt)
|
|
|
|
{
|
|
|
|
/* only for periodic endpoints */
|
|
|
|
if (usb_endpoint_xfer_control(&ep->desc)
|
|
|
|
|| usb_endpoint_xfer_bulk(&ep->desc))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
/*
|
2016-01-26 15:50:09 +00:00
|
|
|
* for LS & FS periodic endpoints which its device is not behind
|
|
|
|
* a TT are also ignored, root-hub will schedule them directly,
|
|
|
|
* but need set @bpkts field of endpoint context to 1.
|
2015-11-24 11:09:55 +00:00
|
|
|
*/
|
|
|
|
if (is_fs_or_ls(speed) && !has_tt)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
int xhci_mtk_sch_init(struct xhci_hcd_mtk *mtk)
|
|
|
|
{
|
2017-10-13 08:26:34 +00:00
|
|
|
struct xhci_hcd *xhci = hcd_to_xhci(mtk->hcd);
|
2015-11-24 11:09:55 +00:00
|
|
|
struct mu3h_sch_bw_info *sch_array;
|
|
|
|
int num_usb_bus;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/* ss IN and OUT are separated */
|
2018-05-21 13:40:03 +00:00
|
|
|
num_usb_bus = xhci->usb3_rhub.num_ports * 2 + xhci->usb2_rhub.num_ports;
|
2015-11-24 11:09:55 +00:00
|
|
|
|
|
|
|
sch_array = kcalloc(num_usb_bus, sizeof(*sch_array), GFP_KERNEL);
|
|
|
|
if (sch_array == NULL)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
for (i = 0; i < num_usb_bus; i++)
|
|
|
|
INIT_LIST_HEAD(&sch_array[i].bw_ep_list);
|
|
|
|
|
|
|
|
mtk->sch_array = sch_array;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(xhci_mtk_sch_init);
|
|
|
|
|
|
|
|
void xhci_mtk_sch_exit(struct xhci_hcd_mtk *mtk)
|
|
|
|
{
|
|
|
|
kfree(mtk->sch_array);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(xhci_mtk_sch_exit);
|
|
|
|
|
|
|
|
int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
|
|
|
|
struct usb_host_endpoint *ep)
|
|
|
|
{
|
|
|
|
struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
|
|
|
|
struct xhci_hcd *xhci;
|
|
|
|
struct xhci_ep_ctx *ep_ctx;
|
|
|
|
struct xhci_slot_ctx *slot_ctx;
|
|
|
|
struct xhci_virt_device *virt_dev;
|
|
|
|
struct mu3h_sch_bw_info *sch_bw;
|
|
|
|
struct mu3h_sch_ep_info *sch_ep;
|
|
|
|
struct mu3h_sch_bw_info *sch_array;
|
|
|
|
unsigned int ep_index;
|
|
|
|
int bw_index;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
xhci = hcd_to_xhci(hcd);
|
|
|
|
virt_dev = xhci->devs[udev->slot_id];
|
|
|
|
ep_index = xhci_get_endpoint_index(&ep->desc);
|
|
|
|
slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx);
|
|
|
|
ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);
|
|
|
|
sch_array = mtk->sch_array;
|
|
|
|
|
|
|
|
xhci_dbg(xhci, "%s() type:%d, speed:%d, mpkt:%d, dir:%d, ep:%p\n",
|
|
|
|
__func__, usb_endpoint_type(&ep->desc), udev->speed,
|
2016-09-28 10:46:37 +00:00
|
|
|
usb_endpoint_maxp(&ep->desc),
|
2015-11-24 11:09:55 +00:00
|
|
|
usb_endpoint_dir_in(&ep->desc), ep);
|
|
|
|
|
2016-01-26 15:50:09 +00:00
|
|
|
if (!need_bw_sch(ep, udev->speed, slot_ctx->tt_info & TT_SLOT)) {
|
|
|
|
/*
|
|
|
|
* set @bpkts to 1 if it is LS or FS periodic endpoint, and its
|
|
|
|
* device does not connected through an external HS hub
|
|
|
|
*/
|
|
|
|
if (usb_endpoint_xfer_int(&ep->desc)
|
|
|
|
|| usb_endpoint_xfer_isoc(&ep->desc))
|
|
|
|
ep_ctx->reserved[0] |= cpu_to_le32(EP_BPKTS(1));
|
|
|
|
|
2015-11-24 11:09:55 +00:00
|
|
|
return 0;
|
2016-01-26 15:50:09 +00:00
|
|
|
}
|
2015-11-24 11:09:55 +00:00
|
|
|
|
|
|
|
bw_index = get_bw_index(xhci, udev, ep);
|
|
|
|
sch_bw = &sch_array[bw_index];
|
|
|
|
|
2018-09-20 16:13:33 +00:00
|
|
|
sch_ep = create_sch_ep(udev, ep, ep_ctx);
|
|
|
|
if (IS_ERR_OR_NULL(sch_ep))
|
2015-11-24 11:09:55 +00:00
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
setup_sch_info(udev, ep_ctx, sch_ep);
|
|
|
|
|
|
|
|
ret = check_sch_bw(udev, sch_bw, sch_ep);
|
|
|
|
if (ret) {
|
|
|
|
xhci_err(xhci, "Not enough bandwidth!\n");
|
2018-09-20 16:13:34 +00:00
|
|
|
if (is_fs_or_ls(udev->speed))
|
|
|
|
drop_tt(udev);
|
|
|
|
|
2015-11-24 11:09:55 +00:00
|
|
|
kfree(sch_ep);
|
|
|
|
return -ENOSPC;
|
|
|
|
}
|
|
|
|
|
|
|
|
list_add_tail(&sch_ep->endpoint, &sch_bw->bw_ep_list);
|
|
|
|
|
|
|
|
ep_ctx->reserved[0] |= cpu_to_le32(EP_BPKTS(sch_ep->pkts)
|
|
|
|
| EP_BCSCOUNT(sch_ep->cs_count) | EP_BBM(sch_ep->burst_mode));
|
|
|
|
ep_ctx->reserved[1] |= cpu_to_le32(EP_BOFFSET(sch_ep->offset)
|
|
|
|
| EP_BREPEAT(sch_ep->repeat));
|
|
|
|
|
|
|
|
xhci_dbg(xhci, " PKTS:%x, CSCOUNT:%x, BM:%x, OFFSET:%x, REPEAT:%x\n",
|
|
|
|
sch_ep->pkts, sch_ep->cs_count, sch_ep->burst_mode,
|
|
|
|
sch_ep->offset, sch_ep->repeat);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(xhci_mtk_add_ep_quirk);
|
|
|
|
|
|
|
|
void xhci_mtk_drop_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
|
|
|
|
struct usb_host_endpoint *ep)
|
|
|
|
{
|
|
|
|
struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
|
|
|
|
struct xhci_hcd *xhci;
|
|
|
|
struct xhci_slot_ctx *slot_ctx;
|
|
|
|
struct xhci_virt_device *virt_dev;
|
|
|
|
struct mu3h_sch_bw_info *sch_array;
|
|
|
|
struct mu3h_sch_bw_info *sch_bw;
|
|
|
|
struct mu3h_sch_ep_info *sch_ep;
|
|
|
|
int bw_index;
|
|
|
|
|
|
|
|
xhci = hcd_to_xhci(hcd);
|
|
|
|
virt_dev = xhci->devs[udev->slot_id];
|
|
|
|
slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx);
|
|
|
|
sch_array = mtk->sch_array;
|
|
|
|
|
|
|
|
xhci_dbg(xhci, "%s() type:%d, speed:%d, mpks:%d, dir:%d, ep:%p\n",
|
|
|
|
__func__, usb_endpoint_type(&ep->desc), udev->speed,
|
2016-09-28 10:46:37 +00:00
|
|
|
usb_endpoint_maxp(&ep->desc),
|
2015-11-24 11:09:55 +00:00
|
|
|
usb_endpoint_dir_in(&ep->desc), ep);
|
|
|
|
|
|
|
|
if (!need_bw_sch(ep, udev->speed, slot_ctx->tt_info & TT_SLOT))
|
|
|
|
return;
|
|
|
|
|
|
|
|
bw_index = get_bw_index(xhci, udev, ep);
|
|
|
|
sch_bw = &sch_array[bw_index];
|
|
|
|
|
|
|
|
list_for_each_entry(sch_ep, &sch_bw->bw_ep_list, endpoint) {
|
|
|
|
if (sch_ep->ep == ep) {
|
2018-09-20 16:13:33 +00:00
|
|
|
update_bus_bw(sch_bw, sch_ep, 0);
|
2015-11-24 11:09:55 +00:00
|
|
|
list_del(&sch_ep->endpoint);
|
2018-09-20 16:13:34 +00:00
|
|
|
if (is_fs_or_ls(udev->speed)) {
|
|
|
|
list_del(&sch_ep->tt_endpoint);
|
|
|
|
drop_tt(udev);
|
|
|
|
}
|
2015-11-24 11:09:55 +00:00
|
|
|
kfree(sch_ep);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(xhci_mtk_drop_ep_quirk);
|