mirror of https://gitee.com/openkylin/linux.git
1877 lines
64 KiB
C
1877 lines
64 KiB
C
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/*
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* xHCI host controller driver
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*
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* Copyright (C) 2008 Intel Corp.
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*
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* Author: Sarah Sharp
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* Some code borrowed from the Linux EHCI driver.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __LINUX_XHCI_HCD_H
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#define __LINUX_XHCI_HCD_H
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#include <linux/usb.h>
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#include <linux/timer.h>
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#include <linux/kernel.h>
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#include <linux/usb/hcd.h>
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/* Code sharing between pci-quirks and xhci hcd */
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#include "xhci-ext-caps.h"
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#include "pci-quirks.h"
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/* xHCI PCI Configuration Registers */
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#define XHCI_SBRN_OFFSET (0x60)
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/* Max number of USB devices for any host controller - limit in section 6.1 */
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#define MAX_HC_SLOTS 256
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/* Section 5.3.3 - MaxPorts */
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#define MAX_HC_PORTS 127
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/*
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* xHCI register interface.
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* This corresponds to the eXtensible Host Controller Interface (xHCI)
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* Revision 0.95 specification
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*/
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/**
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* struct xhci_cap_regs - xHCI Host Controller Capability Registers.
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* @hc_capbase: length of the capabilities register and HC version number
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* @hcs_params1: HCSPARAMS1 - Structural Parameters 1
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* @hcs_params2: HCSPARAMS2 - Structural Parameters 2
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* @hcs_params3: HCSPARAMS3 - Structural Parameters 3
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* @hcc_params: HCCPARAMS - Capability Parameters
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* @db_off: DBOFF - Doorbell array offset
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* @run_regs_off: RTSOFF - Runtime register space offset
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*/
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struct xhci_cap_regs {
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__le32 hc_capbase;
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__le32 hcs_params1;
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__le32 hcs_params2;
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__le32 hcs_params3;
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__le32 hcc_params;
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__le32 db_off;
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__le32 run_regs_off;
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/* Reserved up to (CAPLENGTH - 0x1C) */
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};
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/* hc_capbase bitmasks */
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/* bits 7:0 - how long is the Capabilities register */
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#define HC_LENGTH(p) XHCI_HC_LENGTH(p)
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/* bits 31:16 */
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#define HC_VERSION(p) (((p) >> 16) & 0xffff)
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/* HCSPARAMS1 - hcs_params1 - bitmasks */
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/* bits 0:7, Max Device Slots */
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#define HCS_MAX_SLOTS(p) (((p) >> 0) & 0xff)
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#define HCS_SLOTS_MASK 0xff
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/* bits 8:18, Max Interrupters */
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#define HCS_MAX_INTRS(p) (((p) >> 8) & 0x7ff)
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/* bits 24:31, Max Ports - max value is 0x7F = 127 ports */
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#define HCS_MAX_PORTS(p) (((p) >> 24) & 0x7f)
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/* HCSPARAMS2 - hcs_params2 - bitmasks */
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/* bits 0:3, frames or uframes that SW needs to queue transactions
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* ahead of the HW to meet periodic deadlines */
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#define HCS_IST(p) (((p) >> 0) & 0xf)
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/* bits 4:7, max number of Event Ring segments */
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#define HCS_ERST_MAX(p) (((p) >> 4) & 0xf)
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/* bits 21:25 Hi 5 bits of Scratchpad buffers SW must allocate for the HW */
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/* bit 26 Scratchpad restore - for save/restore HW state - not used yet */
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/* bits 27:31 Lo 5 bits of Scratchpad buffers SW must allocate for the HW */
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#define HCS_MAX_SCRATCHPAD(p) ((((p) >> 16) & 0x3e0) | (((p) >> 27) & 0x1f))
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/* HCSPARAMS3 - hcs_params3 - bitmasks */
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/* bits 0:7, Max U1 to U0 latency for the roothub ports */
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#define HCS_U1_LATENCY(p) (((p) >> 0) & 0xff)
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/* bits 16:31, Max U2 to U0 latency for the roothub ports */
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#define HCS_U2_LATENCY(p) (((p) >> 16) & 0xffff)
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/* HCCPARAMS - hcc_params - bitmasks */
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/* true: HC can use 64-bit address pointers */
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#define HCC_64BIT_ADDR(p) ((p) & (1 << 0))
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/* true: HC can do bandwidth negotiation */
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#define HCC_BANDWIDTH_NEG(p) ((p) & (1 << 1))
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/* true: HC uses 64-byte Device Context structures
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* FIXME 64-byte context structures aren't supported yet.
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*/
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#define HCC_64BYTE_CONTEXT(p) ((p) & (1 << 2))
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/* true: HC has port power switches */
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#define HCC_PPC(p) ((p) & (1 << 3))
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/* true: HC has port indicators */
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#define HCS_INDICATOR(p) ((p) & (1 << 4))
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/* true: HC has Light HC Reset Capability */
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#define HCC_LIGHT_RESET(p) ((p) & (1 << 5))
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/* true: HC supports latency tolerance messaging */
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#define HCC_LTC(p) ((p) & (1 << 6))
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/* true: no secondary Stream ID Support */
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#define HCC_NSS(p) ((p) & (1 << 7))
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/* Max size for Primary Stream Arrays - 2^(n+1), where n is bits 12:15 */
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#define HCC_MAX_PSA(p) (1 << ((((p) >> 12) & 0xf) + 1))
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/* Extended Capabilities pointer from PCI base - section 5.3.6 */
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#define HCC_EXT_CAPS(p) XHCI_HCC_EXT_CAPS(p)
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/* db_off bitmask - bits 0:1 reserved */
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#define DBOFF_MASK (~0x3)
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/* run_regs_off bitmask - bits 0:4 reserved */
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#define RTSOFF_MASK (~0x1f)
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/* Number of registers per port */
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#define NUM_PORT_REGS 4
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#define PORTSC 0
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#define PORTPMSC 1
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#define PORTLI 2
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#define PORTHLPMC 3
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/**
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* struct xhci_op_regs - xHCI Host Controller Operational Registers.
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* @command: USBCMD - xHC command register
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* @status: USBSTS - xHC status register
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* @page_size: This indicates the page size that the host controller
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* supports. If bit n is set, the HC supports a page size
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* of 2^(n+12), up to a 128MB page size.
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* 4K is the minimum page size.
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* @cmd_ring: CRP - 64-bit Command Ring Pointer
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* @dcbaa_ptr: DCBAAP - 64-bit Device Context Base Address Array Pointer
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* @config_reg: CONFIG - Configure Register
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* @port_status_base: PORTSCn - base address for Port Status and Control
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* Each port has a Port Status and Control register,
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* followed by a Port Power Management Status and Control
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* register, a Port Link Info register, and a reserved
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* register.
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* @port_power_base: PORTPMSCn - base address for
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* Port Power Management Status and Control
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* @port_link_base: PORTLIn - base address for Port Link Info (current
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* Link PM state and control) for USB 2.1 and USB 3.0
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* devices.
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*/
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struct xhci_op_regs {
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__le32 command;
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__le32 status;
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__le32 page_size;
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__le32 reserved1;
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__le32 reserved2;
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__le32 dev_notification;
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__le64 cmd_ring;
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/* rsvd: offset 0x20-2F */
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__le32 reserved3[4];
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__le64 dcbaa_ptr;
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__le32 config_reg;
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/* rsvd: offset 0x3C-3FF */
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__le32 reserved4[241];
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/* port 1 registers, which serve as a base address for other ports */
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__le32 port_status_base;
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__le32 port_power_base;
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__le32 port_link_base;
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__le32 reserved5;
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/* registers for ports 2-255 */
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__le32 reserved6[NUM_PORT_REGS*254];
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};
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/* USBCMD - USB command - command bitmasks */
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/* start/stop HC execution - do not write unless HC is halted*/
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#define CMD_RUN XHCI_CMD_RUN
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/* Reset HC - resets internal HC state machine and all registers (except
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* PCI config regs). HC does NOT drive a USB reset on the downstream ports.
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* The xHCI driver must reinitialize the xHC after setting this bit.
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*/
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#define CMD_RESET (1 << 1)
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/* Event Interrupt Enable - a '1' allows interrupts from the host controller */
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#define CMD_EIE XHCI_CMD_EIE
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/* Host System Error Interrupt Enable - get out-of-band signal for HC errors */
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#define CMD_HSEIE XHCI_CMD_HSEIE
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/* bits 4:6 are reserved (and should be preserved on writes). */
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/* light reset (port status stays unchanged) - reset completed when this is 0 */
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#define CMD_LRESET (1 << 7)
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/* host controller save/restore state. */
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#define CMD_CSS (1 << 8)
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#define CMD_CRS (1 << 9)
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/* Enable Wrap Event - '1' means xHC generates an event when MFINDEX wraps. */
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#define CMD_EWE XHCI_CMD_EWE
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/* MFINDEX power management - '1' means xHC can stop MFINDEX counter if all root
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* hubs are in U3 (selective suspend), disconnect, disabled, or powered-off.
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* '0' means the xHC can power it off if all ports are in the disconnect,
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* disabled, or powered-off state.
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*/
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#define CMD_PM_INDEX (1 << 11)
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/* bits 12:31 are reserved (and should be preserved on writes). */
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/* IMAN - Interrupt Management Register */
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#define IMAN_IE (1 << 1)
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#define IMAN_IP (1 << 0)
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/* USBSTS - USB status - status bitmasks */
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/* HC not running - set to 1 when run/stop bit is cleared. */
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#define STS_HALT XHCI_STS_HALT
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/* serious error, e.g. PCI parity error. The HC will clear the run/stop bit. */
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#define STS_FATAL (1 << 2)
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/* event interrupt - clear this prior to clearing any IP flags in IR set*/
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#define STS_EINT (1 << 3)
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/* port change detect */
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#define STS_PORT (1 << 4)
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/* bits 5:7 reserved and zeroed */
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/* save state status - '1' means xHC is saving state */
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#define STS_SAVE (1 << 8)
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/* restore state status - '1' means xHC is restoring state */
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#define STS_RESTORE (1 << 9)
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/* true: save or restore error */
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#define STS_SRE (1 << 10)
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/* true: Controller Not Ready to accept doorbell or op reg writes after reset */
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#define STS_CNR XHCI_STS_CNR
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/* true: internal Host Controller Error - SW needs to reset and reinitialize */
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#define STS_HCE (1 << 12)
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/* bits 13:31 reserved and should be preserved */
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/*
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* DNCTRL - Device Notification Control Register - dev_notification bitmasks
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* Generate a device notification event when the HC sees a transaction with a
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* notification type that matches a bit set in this bit field.
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*/
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#define DEV_NOTE_MASK (0xffff)
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#define ENABLE_DEV_NOTE(x) (1 << (x))
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/* Most of the device notification types should only be used for debug.
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* SW does need to pay attention to function wake notifications.
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*/
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#define DEV_NOTE_FWAKE ENABLE_DEV_NOTE(1)
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/* CRCR - Command Ring Control Register - cmd_ring bitmasks */
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/* bit 0 is the command ring cycle state */
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/* stop ring operation after completion of the currently executing command */
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#define CMD_RING_PAUSE (1 << 1)
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/* stop ring immediately - abort the currently executing command */
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#define CMD_RING_ABORT (1 << 2)
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/* true: command ring is running */
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#define CMD_RING_RUNNING (1 << 3)
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/* bits 4:5 reserved and should be preserved */
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/* Command Ring pointer - bit mask for the lower 32 bits. */
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#define CMD_RING_RSVD_BITS (0x3f)
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/* CONFIG - Configure Register - config_reg bitmasks */
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/* bits 0:7 - maximum number of device slots enabled (NumSlotsEn) */
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#define MAX_DEVS(p) ((p) & 0xff)
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/* bits 8:31 - reserved and should be preserved */
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/* PORTSC - Port Status and Control Register - port_status_base bitmasks */
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/* true: device connected */
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#define PORT_CONNECT (1 << 0)
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/* true: port enabled */
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#define PORT_PE (1 << 1)
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/* bit 2 reserved and zeroed */
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/* true: port has an over-current condition */
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#define PORT_OC (1 << 3)
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/* true: port reset signaling asserted */
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#define PORT_RESET (1 << 4)
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/* Port Link State - bits 5:8
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* A read gives the current link PM state of the port,
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* a write with Link State Write Strobe set sets the link state.
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*/
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#define PORT_PLS_MASK (0xf << 5)
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#define XDEV_U0 (0x0 << 5)
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#define XDEV_U2 (0x2 << 5)
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#define XDEV_U3 (0x3 << 5)
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#define XDEV_RESUME (0xf << 5)
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/* true: port has power (see HCC_PPC) */
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#define PORT_POWER (1 << 9)
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/* bits 10:13 indicate device speed:
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* 0 - undefined speed - port hasn't be initialized by a reset yet
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* 1 - full speed
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* 2 - low speed
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* 3 - high speed
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* 4 - super speed
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* 5-15 reserved
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*/
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#define DEV_SPEED_MASK (0xf << 10)
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#define XDEV_FS (0x1 << 10)
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#define XDEV_LS (0x2 << 10)
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#define XDEV_HS (0x3 << 10)
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#define XDEV_SS (0x4 << 10)
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#define DEV_UNDEFSPEED(p) (((p) & DEV_SPEED_MASK) == (0x0<<10))
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#define DEV_FULLSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_FS)
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#define DEV_LOWSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_LS)
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#define DEV_HIGHSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_HS)
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#define DEV_SUPERSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_SS)
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/* Bits 20:23 in the Slot Context are the speed for the device */
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#define SLOT_SPEED_FS (XDEV_FS << 10)
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#define SLOT_SPEED_LS (XDEV_LS << 10)
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#define SLOT_SPEED_HS (XDEV_HS << 10)
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#define SLOT_SPEED_SS (XDEV_SS << 10)
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/* Port Indicator Control */
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#define PORT_LED_OFF (0 << 14)
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#define PORT_LED_AMBER (1 << 14)
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#define PORT_LED_GREEN (2 << 14)
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#define PORT_LED_MASK (3 << 14)
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/* Port Link State Write Strobe - set this when changing link state */
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#define PORT_LINK_STROBE (1 << 16)
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/* true: connect status change */
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#define PORT_CSC (1 << 17)
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/* true: port enable change */
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#define PORT_PEC (1 << 18)
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/* true: warm reset for a USB 3.0 device is done. A "hot" reset puts the port
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* into an enabled state, and the device into the default state. A "warm" reset
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* also resets the link, forcing the device through the link training sequence.
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* SW can also look at the Port Reset register to see when warm reset is done.
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*/
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#define PORT_WRC (1 << 19)
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/* true: over-current change */
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#define PORT_OCC (1 << 20)
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/* true: reset change - 1 to 0 transition of PORT_RESET */
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#define PORT_RC (1 << 21)
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/* port link status change - set on some port link state transitions:
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* Transition Reason
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* ------------------------------------------------------------------------------
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* - U3 to Resume Wakeup signaling from a device
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* - Resume to Recovery to U0 USB 3.0 device resume
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* - Resume to U0 USB 2.0 device resume
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* - U3 to Recovery to U0 Software resume of USB 3.0 device complete
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* - U3 to U0 Software resume of USB 2.0 device complete
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* - U2 to U0 L1 resume of USB 2.1 device complete
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* - U0 to U0 (???) L1 entry rejection by USB 2.1 device
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* - U0 to disabled L1 entry error with USB 2.1 device
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* - Any state to inactive Error on USB 3.0 port
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*/
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#define PORT_PLC (1 << 22)
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/* port configure error change - port failed to configure its link partner */
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#define PORT_CEC (1 << 23)
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/* Cold Attach Status - xHC can set this bit to report device attached during
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* Sx state. Warm port reset should be perfomed to clear this bit and move port
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* to connected state.
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*/
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#define PORT_CAS (1 << 24)
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/* wake on connect (enable) */
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#define PORT_WKCONN_E (1 << 25)
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/* wake on disconnect (enable) */
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#define PORT_WKDISC_E (1 << 26)
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/* wake on over-current (enable) */
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#define PORT_WKOC_E (1 << 27)
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/* bits 28:29 reserved */
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/* true: device is non-removable - for USB 3.0 roothub emulation */
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#define PORT_DEV_REMOVE (1 << 30)
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/* Initiate a warm port reset - complete when PORT_WRC is '1' */
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#define PORT_WR (1 << 31)
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/* We mark duplicate entries with -1 */
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#define DUPLICATE_ENTRY ((u8)(-1))
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/* Port Power Management Status and Control - port_power_base bitmasks */
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/* Inactivity timer value for transitions into U1, in microseconds.
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* Timeout can be up to 127us. 0xFF means an infinite timeout.
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*/
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#define PORT_U1_TIMEOUT(p) ((p) & 0xff)
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#define PORT_U1_TIMEOUT_MASK 0xff
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/* Inactivity timer value for transitions into U2 */
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#define PORT_U2_TIMEOUT(p) (((p) & 0xff) << 8)
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#define PORT_U2_TIMEOUT_MASK (0xff << 8)
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/* Bits 24:31 for port testing */
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/* USB2 Protocol PORTSPMSC */
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#define PORT_L1S_MASK 7
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#define PORT_L1S_SUCCESS 1
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#define PORT_RWE (1 << 3)
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#define PORT_HIRD(p) (((p) & 0xf) << 4)
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#define PORT_HIRD_MASK (0xf << 4)
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#define PORT_L1DS_MASK (0xff << 8)
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#define PORT_L1DS(p) (((p) & 0xff) << 8)
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#define PORT_HLE (1 << 16)
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/* USB2 Protocol PORTHLPMC */
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#define PORT_HIRDM(p)((p) & 3)
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#define PORT_L1_TIMEOUT(p)(((p) & 0xff) << 2)
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#define PORT_BESLD(p)(((p) & 0xf) << 10)
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/* use 512 microseconds as USB2 LPM L1 default timeout. */
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#define XHCI_L1_TIMEOUT 512
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/* Set default HIRD/BESL value to 4 (350/400us) for USB2 L1 LPM resume latency.
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* Safe to use with mixed HIRD and BESL systems (host and device) and is used
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* by other operating systems.
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*
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* XHCI 1.0 errata 8/14/12 Table 13 notes:
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* "Software should choose xHC BESL/BESLD field values that do not violate a
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* device's resume latency requirements,
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* e.g. not program values > '4' if BLC = '1' and a HIRD device is attached,
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* or not program values < '4' if BLC = '0' and a BESL device is attached.
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*/
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#define XHCI_DEFAULT_BESL 4
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/**
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* struct xhci_intr_reg - Interrupt Register Set
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* @irq_pending: IMAN - Interrupt Management Register. Used to enable
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* interrupts and check for pending interrupts.
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* @irq_control: IMOD - Interrupt Moderation Register.
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* Used to throttle interrupts.
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|
* @erst_size: Number of segments in the Event Ring Segment Table (ERST).
|
|
* @erst_base: ERST base address.
|
|
* @erst_dequeue: Event ring dequeue pointer.
|
|
*
|
|
* Each interrupter (defined by a MSI-X vector) has an event ring and an Event
|
|
* Ring Segment Table (ERST) associated with it. The event ring is comprised of
|
|
* multiple segments of the same size. The HC places events on the ring and
|
|
* "updates the Cycle bit in the TRBs to indicate to software the current
|
|
* position of the Enqueue Pointer." The HCD (Linux) processes those events and
|
|
* updates the dequeue pointer.
|
|
*/
|
|
struct xhci_intr_reg {
|
|
__le32 irq_pending;
|
|
__le32 irq_control;
|
|
__le32 erst_size;
|
|
__le32 rsvd;
|
|
__le64 erst_base;
|
|
__le64 erst_dequeue;
|
|
};
|
|
|
|
/* irq_pending bitmasks */
|
|
#define ER_IRQ_PENDING(p) ((p) & 0x1)
|
|
/* bits 2:31 need to be preserved */
|
|
/* THIS IS BUGGY - FIXME - IP IS WRITE 1 TO CLEAR */
|
|
#define ER_IRQ_CLEAR(p) ((p) & 0xfffffffe)
|
|
#define ER_IRQ_ENABLE(p) ((ER_IRQ_CLEAR(p)) | 0x2)
|
|
#define ER_IRQ_DISABLE(p) ((ER_IRQ_CLEAR(p)) & ~(0x2))
|
|
|
|
/* irq_control bitmasks */
|
|
/* Minimum interval between interrupts (in 250ns intervals). The interval
|
|
* between interrupts will be longer if there are no events on the event ring.
|
|
* Default is 4000 (1 ms).
|
|
*/
|
|
#define ER_IRQ_INTERVAL_MASK (0xffff)
|
|
/* Counter used to count down the time to the next interrupt - HW use only */
|
|
#define ER_IRQ_COUNTER_MASK (0xffff << 16)
|
|
|
|
/* erst_size bitmasks */
|
|
/* Preserve bits 16:31 of erst_size */
|
|
#define ERST_SIZE_MASK (0xffff << 16)
|
|
|
|
/* erst_dequeue bitmasks */
|
|
/* Dequeue ERST Segment Index (DESI) - Segment number (or alias)
|
|
* where the current dequeue pointer lies. This is an optional HW hint.
|
|
*/
|
|
#define ERST_DESI_MASK (0x7)
|
|
/* Event Handler Busy (EHB) - is the event ring scheduled to be serviced by
|
|
* a work queue (or delayed service routine)?
|
|
*/
|
|
#define ERST_EHB (1 << 3)
|
|
#define ERST_PTR_MASK (0xf)
|
|
|
|
/**
|
|
* struct xhci_run_regs
|
|
* @microframe_index:
|
|
* MFINDEX - current microframe number
|
|
*
|
|
* Section 5.5 Host Controller Runtime Registers:
|
|
* "Software should read and write these registers using only Dword (32 bit)
|
|
* or larger accesses"
|
|
*/
|
|
struct xhci_run_regs {
|
|
__le32 microframe_index;
|
|
__le32 rsvd[7];
|
|
struct xhci_intr_reg ir_set[128];
|
|
};
|
|
|
|
/**
|
|
* struct doorbell_array
|
|
*
|
|
* Bits 0 - 7: Endpoint target
|
|
* Bits 8 - 15: RsvdZ
|
|
* Bits 16 - 31: Stream ID
|
|
*
|
|
* Section 5.6
|
|
*/
|
|
struct xhci_doorbell_array {
|
|
__le32 doorbell[256];
|
|
};
|
|
|
|
#define DB_VALUE(ep, stream) ((((ep) + 1) & 0xff) | ((stream) << 16))
|
|
#define DB_VALUE_HOST 0x00000000
|
|
|
|
/**
|
|
* struct xhci_protocol_caps
|
|
* @revision: major revision, minor revision, capability ID,
|
|
* and next capability pointer.
|
|
* @name_string: Four ASCII characters to say which spec this xHC
|
|
* follows, typically "USB ".
|
|
* @port_info: Port offset, count, and protocol-defined information.
|
|
*/
|
|
struct xhci_protocol_caps {
|
|
u32 revision;
|
|
u32 name_string;
|
|
u32 port_info;
|
|
};
|
|
|
|
#define XHCI_EXT_PORT_MAJOR(x) (((x) >> 24) & 0xff)
|
|
#define XHCI_EXT_PORT_OFF(x) ((x) & 0xff)
|
|
#define XHCI_EXT_PORT_COUNT(x) (((x) >> 8) & 0xff)
|
|
|
|
/**
|
|
* struct xhci_container_ctx
|
|
* @type: Type of context. Used to calculated offsets to contained contexts.
|
|
* @size: Size of the context data
|
|
* @bytes: The raw context data given to HW
|
|
* @dma: dma address of the bytes
|
|
*
|
|
* Represents either a Device or Input context. Holds a pointer to the raw
|
|
* memory used for the context (bytes) and dma address of it (dma).
|
|
*/
|
|
struct xhci_container_ctx {
|
|
unsigned type;
|
|
#define XHCI_CTX_TYPE_DEVICE 0x1
|
|
#define XHCI_CTX_TYPE_INPUT 0x2
|
|
|
|
int size;
|
|
|
|
u8 *bytes;
|
|
dma_addr_t dma;
|
|
};
|
|
|
|
/**
|
|
* struct xhci_slot_ctx
|
|
* @dev_info: Route string, device speed, hub info, and last valid endpoint
|
|
* @dev_info2: Max exit latency for device number, root hub port number
|
|
* @tt_info: tt_info is used to construct split transaction tokens
|
|
* @dev_state: slot state and device address
|
|
*
|
|
* Slot Context - section 6.2.1.1. This assumes the HC uses 32-byte context
|
|
* structures. If the HC uses 64-byte contexts, there is an additional 32 bytes
|
|
* reserved at the end of the slot context for HC internal use.
|
|
*/
|
|
struct xhci_slot_ctx {
|
|
__le32 dev_info;
|
|
__le32 dev_info2;
|
|
__le32 tt_info;
|
|
__le32 dev_state;
|
|
/* offset 0x10 to 0x1f reserved for HC internal use */
|
|
__le32 reserved[4];
|
|
};
|
|
|
|
/* dev_info bitmasks */
|
|
/* Route String - 0:19 */
|
|
#define ROUTE_STRING_MASK (0xfffff)
|
|
/* Device speed - values defined by PORTSC Device Speed field - 20:23 */
|
|
#define DEV_SPEED (0xf << 20)
|
|
/* bit 24 reserved */
|
|
/* Is this LS/FS device connected through a HS hub? - bit 25 */
|
|
#define DEV_MTT (0x1 << 25)
|
|
/* Set if the device is a hub - bit 26 */
|
|
#define DEV_HUB (0x1 << 26)
|
|
/* Index of the last valid endpoint context in this device context - 27:31 */
|
|
#define LAST_CTX_MASK (0x1f << 27)
|
|
#define LAST_CTX(p) ((p) << 27)
|
|
#define LAST_CTX_TO_EP_NUM(p) (((p) >> 27) - 1)
|
|
#define SLOT_FLAG (1 << 0)
|
|
#define EP0_FLAG (1 << 1)
|
|
|
|
/* dev_info2 bitmasks */
|
|
/* Max Exit Latency (ms) - worst case time to wake up all links in dev path */
|
|
#define MAX_EXIT (0xffff)
|
|
/* Root hub port number that is needed to access the USB device */
|
|
#define ROOT_HUB_PORT(p) (((p) & 0xff) << 16)
|
|
#define DEVINFO_TO_ROOT_HUB_PORT(p) (((p) >> 16) & 0xff)
|
|
/* Maximum number of ports under a hub device */
|
|
#define XHCI_MAX_PORTS(p) (((p) & 0xff) << 24)
|
|
|
|
/* tt_info bitmasks */
|
|
/*
|
|
* TT Hub Slot ID - for low or full speed devices attached to a high-speed hub
|
|
* The Slot ID of the hub that isolates the high speed signaling from
|
|
* this low or full-speed device. '0' if attached to root hub port.
|
|
*/
|
|
#define TT_SLOT (0xff)
|
|
/*
|
|
* The number of the downstream facing port of the high-speed hub
|
|
* '0' if the device is not low or full speed.
|
|
*/
|
|
#define TT_PORT (0xff << 8)
|
|
#define TT_THINK_TIME(p) (((p) & 0x3) << 16)
|
|
|
|
/* dev_state bitmasks */
|
|
/* USB device address - assigned by the HC */
|
|
#define DEV_ADDR_MASK (0xff)
|
|
/* bits 8:26 reserved */
|
|
/* Slot state */
|
|
#define SLOT_STATE (0x1f << 27)
|
|
#define GET_SLOT_STATE(p) (((p) & (0x1f << 27)) >> 27)
|
|
|
|
#define SLOT_STATE_DISABLED 0
|
|
#define SLOT_STATE_ENABLED SLOT_STATE_DISABLED
|
|
#define SLOT_STATE_DEFAULT 1
|
|
#define SLOT_STATE_ADDRESSED 2
|
|
#define SLOT_STATE_CONFIGURED 3
|
|
|
|
/**
|
|
* struct xhci_ep_ctx
|
|
* @ep_info: endpoint state, streams, mult, and interval information.
|
|
* @ep_info2: information on endpoint type, max packet size, max burst size,
|
|
* error count, and whether the HC will force an event for all
|
|
* transactions.
|
|
* @deq: 64-bit ring dequeue pointer address. If the endpoint only
|
|
* defines one stream, this points to the endpoint transfer ring.
|
|
* Otherwise, it points to a stream context array, which has a
|
|
* ring pointer for each flow.
|
|
* @tx_info:
|
|
* Average TRB lengths for the endpoint ring and
|
|
* max payload within an Endpoint Service Interval Time (ESIT).
|
|
*
|
|
* Endpoint Context - section 6.2.1.2. This assumes the HC uses 32-byte context
|
|
* structures. If the HC uses 64-byte contexts, there is an additional 32 bytes
|
|
* reserved at the end of the endpoint context for HC internal use.
|
|
*/
|
|
struct xhci_ep_ctx {
|
|
__le32 ep_info;
|
|
__le32 ep_info2;
|
|
__le64 deq;
|
|
__le32 tx_info;
|
|
/* offset 0x14 - 0x1f reserved for HC internal use */
|
|
__le32 reserved[3];
|
|
};
|
|
|
|
/* ep_info bitmasks */
|
|
/*
|
|
* Endpoint State - bits 0:2
|
|
* 0 - disabled
|
|
* 1 - running
|
|
* 2 - halted due to halt condition - ok to manipulate endpoint ring
|
|
* 3 - stopped
|
|
* 4 - TRB error
|
|
* 5-7 - reserved
|
|
*/
|
|
#define EP_STATE_MASK (0xf)
|
|
#define EP_STATE_DISABLED 0
|
|
#define EP_STATE_RUNNING 1
|
|
#define EP_STATE_HALTED 2
|
|
#define EP_STATE_STOPPED 3
|
|
#define EP_STATE_ERROR 4
|
|
/* Mult - Max number of burtst within an interval, in EP companion desc. */
|
|
#define EP_MULT(p) (((p) & 0x3) << 8)
|
|
#define CTX_TO_EP_MULT(p) (((p) >> 8) & 0x3)
|
|
/* bits 10:14 are Max Primary Streams */
|
|
/* bit 15 is Linear Stream Array */
|
|
/* Interval - period between requests to an endpoint - 125u increments. */
|
|
#define EP_INTERVAL(p) (((p) & 0xff) << 16)
|
|
#define EP_INTERVAL_TO_UFRAMES(p) (1 << (((p) >> 16) & 0xff))
|
|
#define CTX_TO_EP_INTERVAL(p) (((p) >> 16) & 0xff)
|
|
#define EP_MAXPSTREAMS_MASK (0x1f << 10)
|
|
#define EP_MAXPSTREAMS(p) (((p) << 10) & EP_MAXPSTREAMS_MASK)
|
|
/* Endpoint is set up with a Linear Stream Array (vs. Secondary Stream Array) */
|
|
#define EP_HAS_LSA (1 << 15)
|
|
|
|
/* ep_info2 bitmasks */
|
|
/*
|
|
* Force Event - generate transfer events for all TRBs for this endpoint
|
|
* This will tell the HC to ignore the IOC and ISP flags (for debugging only).
|
|
*/
|
|
#define FORCE_EVENT (0x1)
|
|
#define ERROR_COUNT(p) (((p) & 0x3) << 1)
|
|
#define CTX_TO_EP_TYPE(p) (((p) >> 3) & 0x7)
|
|
#define EP_TYPE(p) ((p) << 3)
|
|
#define ISOC_OUT_EP 1
|
|
#define BULK_OUT_EP 2
|
|
#define INT_OUT_EP 3
|
|
#define CTRL_EP 4
|
|
#define ISOC_IN_EP 5
|
|
#define BULK_IN_EP 6
|
|
#define INT_IN_EP 7
|
|
/* bit 6 reserved */
|
|
/* bit 7 is Host Initiate Disable - for disabling stream selection */
|
|
#define MAX_BURST(p) (((p)&0xff) << 8)
|
|
#define CTX_TO_MAX_BURST(p) (((p) >> 8) & 0xff)
|
|
#define MAX_PACKET(p) (((p)&0xffff) << 16)
|
|
#define MAX_PACKET_MASK (0xffff << 16)
|
|
#define MAX_PACKET_DECODED(p) (((p) >> 16) & 0xffff)
|
|
|
|
/* Get max packet size from ep desc. Bit 10..0 specify the max packet size.
|
|
* USB2.0 spec 9.6.6.
|
|
*/
|
|
#define GET_MAX_PACKET(p) ((p) & 0x7ff)
|
|
|
|
/* tx_info bitmasks */
|
|
#define AVG_TRB_LENGTH_FOR_EP(p) ((p) & 0xffff)
|
|
#define MAX_ESIT_PAYLOAD_FOR_EP(p) (((p) & 0xffff) << 16)
|
|
#define CTX_TO_MAX_ESIT_PAYLOAD(p) (((p) >> 16) & 0xffff)
|
|
|
|
/* deq bitmasks */
|
|
#define EP_CTX_CYCLE_MASK (1 << 0)
|
|
#define SCTX_DEQ_MASK (~0xfL)
|
|
|
|
|
|
/**
|
|
* struct xhci_input_control_context
|
|
* Input control context; see section 6.2.5.
|
|
*
|
|
* @drop_context: set the bit of the endpoint context you want to disable
|
|
* @add_context: set the bit of the endpoint context you want to enable
|
|
*/
|
|
struct xhci_input_control_ctx {
|
|
__le32 drop_flags;
|
|
__le32 add_flags;
|
|
__le32 rsvd2[6];
|
|
};
|
|
|
|
#define EP_IS_ADDED(ctrl_ctx, i) \
|
|
(le32_to_cpu(ctrl_ctx->add_flags) & (1 << (i + 1)))
|
|
#define EP_IS_DROPPED(ctrl_ctx, i) \
|
|
(le32_to_cpu(ctrl_ctx->drop_flags) & (1 << (i + 1)))
|
|
|
|
/* Represents everything that is needed to issue a command on the command ring.
|
|
* It's useful to pre-allocate these for commands that cannot fail due to
|
|
* out-of-memory errors, like freeing streams.
|
|
*/
|
|
struct xhci_command {
|
|
/* Input context for changing device state */
|
|
struct xhci_container_ctx *in_ctx;
|
|
u32 status;
|
|
/* If completion is null, no one is waiting on this command
|
|
* and the structure can be freed after the command completes.
|
|
*/
|
|
struct completion *completion;
|
|
union xhci_trb *command_trb;
|
|
struct list_head cmd_list;
|
|
};
|
|
|
|
/* drop context bitmasks */
|
|
#define DROP_EP(x) (0x1 << x)
|
|
/* add context bitmasks */
|
|
#define ADD_EP(x) (0x1 << x)
|
|
|
|
struct xhci_stream_ctx {
|
|
/* 64-bit stream ring address, cycle state, and stream type */
|
|
__le64 stream_ring;
|
|
/* offset 0x14 - 0x1f reserved for HC internal use */
|
|
__le32 reserved[2];
|
|
};
|
|
|
|
/* Stream Context Types (section 6.4.1) - bits 3:1 of stream ctx deq ptr */
|
|
#define SCT_FOR_CTX(p) (((p) & 0x7) << 1)
|
|
/* Secondary stream array type, dequeue pointer is to a transfer ring */
|
|
#define SCT_SEC_TR 0
|
|
/* Primary stream array type, dequeue pointer is to a transfer ring */
|
|
#define SCT_PRI_TR 1
|
|
/* Dequeue pointer is for a secondary stream array (SSA) with 8 entries */
|
|
#define SCT_SSA_8 2
|
|
#define SCT_SSA_16 3
|
|
#define SCT_SSA_32 4
|
|
#define SCT_SSA_64 5
|
|
#define SCT_SSA_128 6
|
|
#define SCT_SSA_256 7
|
|
|
|
/* Assume no secondary streams for now */
|
|
struct xhci_stream_info {
|
|
struct xhci_ring **stream_rings;
|
|
/* Number of streams, including stream 0 (which drivers can't use) */
|
|
unsigned int num_streams;
|
|
/* The stream context array may be bigger than
|
|
* the number of streams the driver asked for
|
|
*/
|
|
struct xhci_stream_ctx *stream_ctx_array;
|
|
unsigned int num_stream_ctxs;
|
|
dma_addr_t ctx_array_dma;
|
|
/* For mapping physical TRB addresses to segments in stream rings */
|
|
struct radix_tree_root trb_address_map;
|
|
struct xhci_command *free_streams_command;
|
|
};
|
|
|
|
#define SMALL_STREAM_ARRAY_SIZE 256
|
|
#define MEDIUM_STREAM_ARRAY_SIZE 1024
|
|
|
|
/* Some Intel xHCI host controllers need software to keep track of the bus
|
|
* bandwidth. Keep track of endpoint info here. Each root port is allocated
|
|
* the full bus bandwidth. We must also treat TTs (including each port under a
|
|
* multi-TT hub) as a separate bandwidth domain. The direct memory interface
|
|
* (DMI) also limits the total bandwidth (across all domains) that can be used.
|
|
*/
|
|
struct xhci_bw_info {
|
|
/* ep_interval is zero-based */
|
|
unsigned int ep_interval;
|
|
/* mult and num_packets are one-based */
|
|
unsigned int mult;
|
|
unsigned int num_packets;
|
|
unsigned int max_packet_size;
|
|
unsigned int max_esit_payload;
|
|
unsigned int type;
|
|
};
|
|
|
|
/* "Block" sizes in bytes the hardware uses for different device speeds.
|
|
* The logic in this part of the hardware limits the number of bits the hardware
|
|
* can use, so must represent bandwidth in a less precise manner to mimic what
|
|
* the scheduler hardware computes.
|
|
*/
|
|
#define FS_BLOCK 1
|
|
#define HS_BLOCK 4
|
|
#define SS_BLOCK 16
|
|
#define DMI_BLOCK 32
|
|
|
|
/* Each device speed has a protocol overhead (CRC, bit stuffing, etc) associated
|
|
* with each byte transferred. SuperSpeed devices have an initial overhead to
|
|
* set up bursts. These are in blocks, see above. LS overhead has already been
|
|
* translated into FS blocks.
|
|
*/
|
|
#define DMI_OVERHEAD 8
|
|
#define DMI_OVERHEAD_BURST 4
|
|
#define SS_OVERHEAD 8
|
|
#define SS_OVERHEAD_BURST 32
|
|
#define HS_OVERHEAD 26
|
|
#define FS_OVERHEAD 20
|
|
#define LS_OVERHEAD 128
|
|
/* The TTs need to claim roughly twice as much bandwidth (94 bytes per
|
|
* microframe ~= 24Mbps) of the HS bus as the devices can actually use because
|
|
* of overhead associated with split transfers crossing microframe boundaries.
|
|
* 31 blocks is pure protocol overhead.
|
|
*/
|
|
#define TT_HS_OVERHEAD (31 + 94)
|
|
#define TT_DMI_OVERHEAD (25 + 12)
|
|
|
|
/* Bandwidth limits in blocks */
|
|
#define FS_BW_LIMIT 1285
|
|
#define TT_BW_LIMIT 1320
|
|
#define HS_BW_LIMIT 1607
|
|
#define SS_BW_LIMIT_IN 3906
|
|
#define DMI_BW_LIMIT_IN 3906
|
|
#define SS_BW_LIMIT_OUT 3906
|
|
#define DMI_BW_LIMIT_OUT 3906
|
|
|
|
/* Percentage of bus bandwidth reserved for non-periodic transfers */
|
|
#define FS_BW_RESERVED 10
|
|
#define HS_BW_RESERVED 20
|
|
#define SS_BW_RESERVED 10
|
|
|
|
struct xhci_virt_ep {
|
|
struct xhci_ring *ring;
|
|
/* Related to endpoints that are configured to use stream IDs only */
|
|
struct xhci_stream_info *stream_info;
|
|
/* Temporary storage in case the configure endpoint command fails and we
|
|
* have to restore the device state to the previous state
|
|
*/
|
|
struct xhci_ring *new_ring;
|
|
unsigned int ep_state;
|
|
#define SET_DEQ_PENDING (1 << 0)
|
|
#define EP_HALTED (1 << 1) /* For stall handling */
|
|
#define EP_HALT_PENDING (1 << 2) /* For URB cancellation */
|
|
/* Transitioning the endpoint to using streams, don't enqueue URBs */
|
|
#define EP_GETTING_STREAMS (1 << 3)
|
|
#define EP_HAS_STREAMS (1 << 4)
|
|
/* Transitioning the endpoint to not using streams, don't enqueue URBs */
|
|
#define EP_GETTING_NO_STREAMS (1 << 5)
|
|
/* ---- Related to URB cancellation ---- */
|
|
struct list_head cancelled_td_list;
|
|
struct xhci_td *stopped_td;
|
|
unsigned int stopped_stream;
|
|
/* Watchdog timer for stop endpoint command to cancel URBs */
|
|
struct timer_list stop_cmd_timer;
|
|
int stop_cmds_pending;
|
|
struct xhci_hcd *xhci;
|
|
/* Dequeue pointer and dequeue segment for a submitted Set TR Dequeue
|
|
* command. We'll need to update the ring's dequeue segment and dequeue
|
|
* pointer after the command completes.
|
|
*/
|
|
struct xhci_segment *queued_deq_seg;
|
|
union xhci_trb *queued_deq_ptr;
|
|
/*
|
|
* Sometimes the xHC can not process isochronous endpoint ring quickly
|
|
* enough, and it will miss some isoc tds on the ring and generate
|
|
* a Missed Service Error Event.
|
|
* Set skip flag when receive a Missed Service Error Event and
|
|
* process the missed tds on the endpoint ring.
|
|
*/
|
|
bool skip;
|
|
/* Bandwidth checking storage */
|
|
struct xhci_bw_info bw_info;
|
|
struct list_head bw_endpoint_list;
|
|
};
|
|
|
|
enum xhci_overhead_type {
|
|
LS_OVERHEAD_TYPE = 0,
|
|
FS_OVERHEAD_TYPE,
|
|
HS_OVERHEAD_TYPE,
|
|
};
|
|
|
|
struct xhci_interval_bw {
|
|
unsigned int num_packets;
|
|
/* Sorted by max packet size.
|
|
* Head of the list is the greatest max packet size.
|
|
*/
|
|
struct list_head endpoints;
|
|
/* How many endpoints of each speed are present. */
|
|
unsigned int overhead[3];
|
|
};
|
|
|
|
#define XHCI_MAX_INTERVAL 16
|
|
|
|
struct xhci_interval_bw_table {
|
|
unsigned int interval0_esit_payload;
|
|
struct xhci_interval_bw interval_bw[XHCI_MAX_INTERVAL];
|
|
/* Includes reserved bandwidth for async endpoints */
|
|
unsigned int bw_used;
|
|
unsigned int ss_bw_in;
|
|
unsigned int ss_bw_out;
|
|
};
|
|
|
|
|
|
struct xhci_virt_device {
|
|
struct usb_device *udev;
|
|
/*
|
|
* Commands to the hardware are passed an "input context" that
|
|
* tells the hardware what to change in its data structures.
|
|
* The hardware will return changes in an "output context" that
|
|
* software must allocate for the hardware. We need to keep
|
|
* track of input and output contexts separately because
|
|
* these commands might fail and we don't trust the hardware.
|
|
*/
|
|
struct xhci_container_ctx *out_ctx;
|
|
/* Used for addressing devices and configuration changes */
|
|
struct xhci_container_ctx *in_ctx;
|
|
/* Rings saved to ensure old alt settings can be re-instated */
|
|
struct xhci_ring **ring_cache;
|
|
int num_rings_cached;
|
|
#define XHCI_MAX_RINGS_CACHED 31
|
|
struct xhci_virt_ep eps[31];
|
|
struct completion cmd_completion;
|
|
u8 fake_port;
|
|
u8 real_port;
|
|
struct xhci_interval_bw_table *bw_table;
|
|
struct xhci_tt_bw_info *tt_info;
|
|
/* The current max exit latency for the enabled USB3 link states. */
|
|
u16 current_mel;
|
|
};
|
|
|
|
/*
|
|
* For each roothub, keep track of the bandwidth information for each periodic
|
|
* interval.
|
|
*
|
|
* If a high speed hub is attached to the roothub, each TT associated with that
|
|
* hub is a separate bandwidth domain. The interval information for the
|
|
* endpoints on the devices under that TT will appear in the TT structure.
|
|
*/
|
|
struct xhci_root_port_bw_info {
|
|
struct list_head tts;
|
|
unsigned int num_active_tts;
|
|
struct xhci_interval_bw_table bw_table;
|
|
};
|
|
|
|
struct xhci_tt_bw_info {
|
|
struct list_head tt_list;
|
|
int slot_id;
|
|
int ttport;
|
|
struct xhci_interval_bw_table bw_table;
|
|
int active_eps;
|
|
};
|
|
|
|
|
|
/**
|
|
* struct xhci_device_context_array
|
|
* @dev_context_ptr array of 64-bit DMA addresses for device contexts
|
|
*/
|
|
struct xhci_device_context_array {
|
|
/* 64-bit device addresses; we only write 32-bit addresses */
|
|
__le64 dev_context_ptrs[MAX_HC_SLOTS];
|
|
/* private xHCD pointers */
|
|
dma_addr_t dma;
|
|
};
|
|
/* TODO: write function to set the 64-bit device DMA address */
|
|
/*
|
|
* TODO: change this to be dynamically sized at HC mem init time since the HC
|
|
* might not be able to handle the maximum number of devices possible.
|
|
*/
|
|
|
|
|
|
struct xhci_transfer_event {
|
|
/* 64-bit buffer address, or immediate data */
|
|
__le64 buffer;
|
|
__le32 transfer_len;
|
|
/* This field is interpreted differently based on the type of TRB */
|
|
__le32 flags;
|
|
};
|
|
|
|
/* Transfer event TRB length bit mask */
|
|
/* bits 0:23 */
|
|
#define EVENT_TRB_LEN(p) ((p) & 0xffffff)
|
|
|
|
/** Transfer Event bit fields **/
|
|
#define TRB_TO_EP_ID(p) (((p) >> 16) & 0x1f)
|
|
|
|
/* Completion Code - only applicable for some types of TRBs */
|
|
#define COMP_CODE_MASK (0xff << 24)
|
|
#define GET_COMP_CODE(p) (((p) & COMP_CODE_MASK) >> 24)
|
|
#define COMP_SUCCESS 1
|
|
/* Data Buffer Error */
|
|
#define COMP_DB_ERR 2
|
|
/* Babble Detected Error */
|
|
#define COMP_BABBLE 3
|
|
/* USB Transaction Error */
|
|
#define COMP_TX_ERR 4
|
|
/* TRB Error - some TRB field is invalid */
|
|
#define COMP_TRB_ERR 5
|
|
/* Stall Error - USB device is stalled */
|
|
#define COMP_STALL 6
|
|
/* Resource Error - HC doesn't have memory for that device configuration */
|
|
#define COMP_ENOMEM 7
|
|
/* Bandwidth Error - not enough room in schedule for this dev config */
|
|
#define COMP_BW_ERR 8
|
|
/* No Slots Available Error - HC ran out of device slots */
|
|
#define COMP_ENOSLOTS 9
|
|
/* Invalid Stream Type Error */
|
|
#define COMP_STREAM_ERR 10
|
|
/* Slot Not Enabled Error - doorbell rung for disabled device slot */
|
|
#define COMP_EBADSLT 11
|
|
/* Endpoint Not Enabled Error */
|
|
#define COMP_EBADEP 12
|
|
/* Short Packet */
|
|
#define COMP_SHORT_TX 13
|
|
/* Ring Underrun - doorbell rung for an empty isoc OUT ep ring */
|
|
#define COMP_UNDERRUN 14
|
|
/* Ring Overrun - isoc IN ep ring is empty when ep is scheduled to RX */
|
|
#define COMP_OVERRUN 15
|
|
/* Virtual Function Event Ring Full Error */
|
|
#define COMP_VF_FULL 16
|
|
/* Parameter Error - Context parameter is invalid */
|
|
#define COMP_EINVAL 17
|
|
/* Bandwidth Overrun Error - isoc ep exceeded its allocated bandwidth */
|
|
#define COMP_BW_OVER 18
|
|
/* Context State Error - illegal context state transition requested */
|
|
#define COMP_CTX_STATE 19
|
|
/* No Ping Response Error - HC didn't get PING_RESPONSE in time to TX */
|
|
#define COMP_PING_ERR 20
|
|
/* Event Ring is full */
|
|
#define COMP_ER_FULL 21
|
|
/* Incompatible Device Error */
|
|
#define COMP_DEV_ERR 22
|
|
/* Missed Service Error - HC couldn't service an isoc ep within interval */
|
|
#define COMP_MISSED_INT 23
|
|
/* Successfully stopped command ring */
|
|
#define COMP_CMD_STOP 24
|
|
/* Successfully aborted current command and stopped command ring */
|
|
#define COMP_CMD_ABORT 25
|
|
/* Stopped - transfer was terminated by a stop endpoint command */
|
|
#define COMP_STOP 26
|
|
/* Same as COMP_EP_STOPPED, but the transferred length in the event is invalid */
|
|
#define COMP_STOP_INVAL 27
|
|
/* Control Abort Error - Debug Capability - control pipe aborted */
|
|
#define COMP_DBG_ABORT 28
|
|
/* Max Exit Latency Too Large Error */
|
|
#define COMP_MEL_ERR 29
|
|
/* TRB type 30 reserved */
|
|
/* Isoc Buffer Overrun - an isoc IN ep sent more data than could fit in TD */
|
|
#define COMP_BUFF_OVER 31
|
|
/* Event Lost Error - xHC has an "internal event overrun condition" */
|
|
#define COMP_ISSUES 32
|
|
/* Undefined Error - reported when other error codes don't apply */
|
|
#define COMP_UNKNOWN 33
|
|
/* Invalid Stream ID Error */
|
|
#define COMP_STRID_ERR 34
|
|
/* Secondary Bandwidth Error - may be returned by a Configure Endpoint cmd */
|
|
#define COMP_2ND_BW_ERR 35
|
|
/* Split Transaction Error */
|
|
#define COMP_SPLIT_ERR 36
|
|
|
|
struct xhci_link_trb {
|
|
/* 64-bit segment pointer*/
|
|
__le64 segment_ptr;
|
|
__le32 intr_target;
|
|
__le32 control;
|
|
};
|
|
|
|
/* control bitfields */
|
|
#define LINK_TOGGLE (0x1<<1)
|
|
|
|
/* Command completion event TRB */
|
|
struct xhci_event_cmd {
|
|
/* Pointer to command TRB, or the value passed by the event data trb */
|
|
__le64 cmd_trb;
|
|
__le32 status;
|
|
__le32 flags;
|
|
};
|
|
|
|
/* flags bitmasks */
|
|
|
|
/* Address device - disable SetAddress */
|
|
#define TRB_BSR (1<<9)
|
|
enum xhci_setup_dev {
|
|
SETUP_CONTEXT_ONLY,
|
|
SETUP_CONTEXT_ADDRESS,
|
|
};
|
|
|
|
/* bits 16:23 are the virtual function ID */
|
|
/* bits 24:31 are the slot ID */
|
|
#define TRB_TO_SLOT_ID(p) (((p) & (0xff<<24)) >> 24)
|
|
#define SLOT_ID_FOR_TRB(p) (((p) & 0xff) << 24)
|
|
|
|
/* Stop Endpoint TRB - ep_index to endpoint ID for this TRB */
|
|
#define TRB_TO_EP_INDEX(p) ((((p) & (0x1f << 16)) >> 16) - 1)
|
|
#define EP_ID_FOR_TRB(p) ((((p) + 1) & 0x1f) << 16)
|
|
|
|
#define SUSPEND_PORT_FOR_TRB(p) (((p) & 1) << 23)
|
|
#define TRB_TO_SUSPEND_PORT(p) (((p) & (1 << 23)) >> 23)
|
|
#define LAST_EP_INDEX 30
|
|
|
|
/* Set TR Dequeue Pointer command TRB fields, 6.4.3.9 */
|
|
#define TRB_TO_STREAM_ID(p) ((((p) & (0xffff << 16)) >> 16))
|
|
#define STREAM_ID_FOR_TRB(p) ((((p)) & 0xffff) << 16)
|
|
#define SCT_FOR_TRB(p) (((p) << 1) & 0x7)
|
|
|
|
|
|
/* Port Status Change Event TRB fields */
|
|
/* Port ID - bits 31:24 */
|
|
#define GET_PORT_ID(p) (((p) & (0xff << 24)) >> 24)
|
|
|
|
/* Normal TRB fields */
|
|
/* transfer_len bitmasks - bits 0:16 */
|
|
#define TRB_LEN(p) ((p) & 0x1ffff)
|
|
/* Interrupter Target - which MSI-X vector to target the completion event at */
|
|
#define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22)
|
|
#define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff)
|
|
#define TRB_TBC(p) (((p) & 0x3) << 7)
|
|
#define TRB_TLBPC(p) (((p) & 0xf) << 16)
|
|
|
|
/* Cycle bit - indicates TRB ownership by HC or HCD */
|
|
#define TRB_CYCLE (1<<0)
|
|
/*
|
|
* Force next event data TRB to be evaluated before task switch.
|
|
* Used to pass OS data back after a TD completes.
|
|
*/
|
|
#define TRB_ENT (1<<1)
|
|
/* Interrupt on short packet */
|
|
#define TRB_ISP (1<<2)
|
|
/* Set PCIe no snoop attribute */
|
|
#define TRB_NO_SNOOP (1<<3)
|
|
/* Chain multiple TRBs into a TD */
|
|
#define TRB_CHAIN (1<<4)
|
|
/* Interrupt on completion */
|
|
#define TRB_IOC (1<<5)
|
|
/* The buffer pointer contains immediate data */
|
|
#define TRB_IDT (1<<6)
|
|
|
|
/* Block Event Interrupt */
|
|
#define TRB_BEI (1<<9)
|
|
|
|
/* Control transfer TRB specific fields */
|
|
#define TRB_DIR_IN (1<<16)
|
|
#define TRB_TX_TYPE(p) ((p) << 16)
|
|
#define TRB_DATA_OUT 2
|
|
#define TRB_DATA_IN 3
|
|
|
|
/* Isochronous TRB specific fields */
|
|
#define TRB_SIA (1<<31)
|
|
|
|
struct xhci_generic_trb {
|
|
__le32 field[4];
|
|
};
|
|
|
|
union xhci_trb {
|
|
struct xhci_link_trb link;
|
|
struct xhci_transfer_event trans_event;
|
|
struct xhci_event_cmd event_cmd;
|
|
struct xhci_generic_trb generic;
|
|
};
|
|
|
|
/* TRB bit mask */
|
|
#define TRB_TYPE_BITMASK (0xfc00)
|
|
#define TRB_TYPE(p) ((p) << 10)
|
|
#define TRB_FIELD_TO_TYPE(p) (((p) & TRB_TYPE_BITMASK) >> 10)
|
|
/* TRB type IDs */
|
|
/* bulk, interrupt, isoc scatter/gather, and control data stage */
|
|
#define TRB_NORMAL 1
|
|
/* setup stage for control transfers */
|
|
#define TRB_SETUP 2
|
|
/* data stage for control transfers */
|
|
#define TRB_DATA 3
|
|
/* status stage for control transfers */
|
|
#define TRB_STATUS 4
|
|
/* isoc transfers */
|
|
#define TRB_ISOC 5
|
|
/* TRB for linking ring segments */
|
|
#define TRB_LINK 6
|
|
#define TRB_EVENT_DATA 7
|
|
/* Transfer Ring No-op (not for the command ring) */
|
|
#define TRB_TR_NOOP 8
|
|
/* Command TRBs */
|
|
/* Enable Slot Command */
|
|
#define TRB_ENABLE_SLOT 9
|
|
/* Disable Slot Command */
|
|
#define TRB_DISABLE_SLOT 10
|
|
/* Address Device Command */
|
|
#define TRB_ADDR_DEV 11
|
|
/* Configure Endpoint Command */
|
|
#define TRB_CONFIG_EP 12
|
|
/* Evaluate Context Command */
|
|
#define TRB_EVAL_CONTEXT 13
|
|
/* Reset Endpoint Command */
|
|
#define TRB_RESET_EP 14
|
|
/* Stop Transfer Ring Command */
|
|
#define TRB_STOP_RING 15
|
|
/* Set Transfer Ring Dequeue Pointer Command */
|
|
#define TRB_SET_DEQ 16
|
|
/* Reset Device Command */
|
|
#define TRB_RESET_DEV 17
|
|
/* Force Event Command (opt) */
|
|
#define TRB_FORCE_EVENT 18
|
|
/* Negotiate Bandwidth Command (opt) */
|
|
#define TRB_NEG_BANDWIDTH 19
|
|
/* Set Latency Tolerance Value Command (opt) */
|
|
#define TRB_SET_LT 20
|
|
/* Get port bandwidth Command */
|
|
#define TRB_GET_BW 21
|
|
/* Force Header Command - generate a transaction or link management packet */
|
|
#define TRB_FORCE_HEADER 22
|
|
/* No-op Command - not for transfer rings */
|
|
#define TRB_CMD_NOOP 23
|
|
/* TRB IDs 24-31 reserved */
|
|
/* Event TRBS */
|
|
/* Transfer Event */
|
|
#define TRB_TRANSFER 32
|
|
/* Command Completion Event */
|
|
#define TRB_COMPLETION 33
|
|
/* Port Status Change Event */
|
|
#define TRB_PORT_STATUS 34
|
|
/* Bandwidth Request Event (opt) */
|
|
#define TRB_BANDWIDTH_EVENT 35
|
|
/* Doorbell Event (opt) */
|
|
#define TRB_DOORBELL 36
|
|
/* Host Controller Event */
|
|
#define TRB_HC_EVENT 37
|
|
/* Device Notification Event - device sent function wake notification */
|
|
#define TRB_DEV_NOTE 38
|
|
/* MFINDEX Wrap Event - microframe counter wrapped */
|
|
#define TRB_MFINDEX_WRAP 39
|
|
/* TRB IDs 40-47 reserved, 48-63 is vendor-defined */
|
|
|
|
/* Nec vendor-specific command completion event. */
|
|
#define TRB_NEC_CMD_COMP 48
|
|
/* Get NEC firmware revision. */
|
|
#define TRB_NEC_GET_FW 49
|
|
|
|
#define TRB_TYPE_LINK(x) (((x) & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
|
|
/* Above, but for __le32 types -- can avoid work by swapping constants: */
|
|
#define TRB_TYPE_LINK_LE32(x) (((x) & cpu_to_le32(TRB_TYPE_BITMASK)) == \
|
|
cpu_to_le32(TRB_TYPE(TRB_LINK)))
|
|
#define TRB_TYPE_NOOP_LE32(x) (((x) & cpu_to_le32(TRB_TYPE_BITMASK)) == \
|
|
cpu_to_le32(TRB_TYPE(TRB_TR_NOOP)))
|
|
|
|
#define NEC_FW_MINOR(p) (((p) >> 0) & 0xff)
|
|
#define NEC_FW_MAJOR(p) (((p) >> 8) & 0xff)
|
|
|
|
/*
|
|
* TRBS_PER_SEGMENT must be a multiple of 4,
|
|
* since the command ring is 64-byte aligned.
|
|
* It must also be greater than 16.
|
|
*/
|
|
#define TRBS_PER_SEGMENT 64
|
|
/* Allow two commands + a link TRB, along with any reserved command TRBs */
|
|
#define MAX_RSVD_CMD_TRBS (TRBS_PER_SEGMENT - 3)
|
|
#define TRB_SEGMENT_SIZE (TRBS_PER_SEGMENT*16)
|
|
#define TRB_SEGMENT_SHIFT (ilog2(TRB_SEGMENT_SIZE))
|
|
/* TRB buffer pointers can't cross 64KB boundaries */
|
|
#define TRB_MAX_BUFF_SHIFT 16
|
|
#define TRB_MAX_BUFF_SIZE (1 << TRB_MAX_BUFF_SHIFT)
|
|
|
|
struct xhci_segment {
|
|
union xhci_trb *trbs;
|
|
/* private to HCD */
|
|
struct xhci_segment *next;
|
|
dma_addr_t dma;
|
|
};
|
|
|
|
struct xhci_td {
|
|
struct list_head td_list;
|
|
struct list_head cancelled_td_list;
|
|
struct urb *urb;
|
|
struct xhci_segment *start_seg;
|
|
union xhci_trb *first_trb;
|
|
union xhci_trb *last_trb;
|
|
/* actual_length of the URB has already been set */
|
|
bool urb_length_set;
|
|
};
|
|
|
|
/* xHCI command default timeout value */
|
|
#define XHCI_CMD_DEFAULT_TIMEOUT (5 * HZ)
|
|
|
|
/* command descriptor */
|
|
struct xhci_cd {
|
|
struct xhci_command *command;
|
|
union xhci_trb *cmd_trb;
|
|
};
|
|
|
|
struct xhci_dequeue_state {
|
|
struct xhci_segment *new_deq_seg;
|
|
union xhci_trb *new_deq_ptr;
|
|
int new_cycle_state;
|
|
};
|
|
|
|
enum xhci_ring_type {
|
|
TYPE_CTRL = 0,
|
|
TYPE_ISOC,
|
|
TYPE_BULK,
|
|
TYPE_INTR,
|
|
TYPE_STREAM,
|
|
TYPE_COMMAND,
|
|
TYPE_EVENT,
|
|
};
|
|
|
|
struct xhci_ring {
|
|
struct xhci_segment *first_seg;
|
|
struct xhci_segment *last_seg;
|
|
union xhci_trb *enqueue;
|
|
struct xhci_segment *enq_seg;
|
|
unsigned int enq_updates;
|
|
union xhci_trb *dequeue;
|
|
struct xhci_segment *deq_seg;
|
|
unsigned int deq_updates;
|
|
struct list_head td_list;
|
|
/*
|
|
* Write the cycle state into the TRB cycle field to give ownership of
|
|
* the TRB to the host controller (if we are the producer), or to check
|
|
* if we own the TRB (if we are the consumer). See section 4.9.1.
|
|
*/
|
|
u32 cycle_state;
|
|
unsigned int stream_id;
|
|
unsigned int num_segs;
|
|
unsigned int num_trbs_free;
|
|
unsigned int num_trbs_free_temp;
|
|
enum xhci_ring_type type;
|
|
bool last_td_was_short;
|
|
struct radix_tree_root *trb_address_map;
|
|
};
|
|
|
|
struct xhci_erst_entry {
|
|
/* 64-bit event ring segment address */
|
|
__le64 seg_addr;
|
|
__le32 seg_size;
|
|
/* Set to zero */
|
|
__le32 rsvd;
|
|
};
|
|
|
|
struct xhci_erst {
|
|
struct xhci_erst_entry *entries;
|
|
unsigned int num_entries;
|
|
/* xhci->event_ring keeps track of segment dma addresses */
|
|
dma_addr_t erst_dma_addr;
|
|
/* Num entries the ERST can contain */
|
|
unsigned int erst_size;
|
|
};
|
|
|
|
struct xhci_scratchpad {
|
|
u64 *sp_array;
|
|
dma_addr_t sp_dma;
|
|
void **sp_buffers;
|
|
dma_addr_t *sp_dma_buffers;
|
|
};
|
|
|
|
struct urb_priv {
|
|
int length;
|
|
int td_cnt;
|
|
struct xhci_td *td[0];
|
|
};
|
|
|
|
/*
|
|
* Each segment table entry is 4*32bits long. 1K seems like an ok size:
|
|
* (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table,
|
|
* meaning 64 ring segments.
|
|
* Initial allocated size of the ERST, in number of entries */
|
|
#define ERST_NUM_SEGS 1
|
|
/* Initial allocated size of the ERST, in number of entries */
|
|
#define ERST_SIZE 64
|
|
/* Initial number of event segment rings allocated */
|
|
#define ERST_ENTRIES 1
|
|
/* Poll every 60 seconds */
|
|
#define POLL_TIMEOUT 60
|
|
/* Stop endpoint command timeout (secs) for URB cancellation watchdog timer */
|
|
#define XHCI_STOP_EP_CMD_TIMEOUT 5
|
|
/* XXX: Make these module parameters */
|
|
|
|
struct s3_save {
|
|
u32 command;
|
|
u32 dev_nt;
|
|
u64 dcbaa_ptr;
|
|
u32 config_reg;
|
|
u32 irq_pending;
|
|
u32 irq_control;
|
|
u32 erst_size;
|
|
u64 erst_base;
|
|
u64 erst_dequeue;
|
|
};
|
|
|
|
/* Use for lpm */
|
|
struct dev_info {
|
|
u32 dev_id;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct xhci_bus_state {
|
|
unsigned long bus_suspended;
|
|
unsigned long next_statechange;
|
|
|
|
/* Port suspend arrays are indexed by the portnum of the fake roothub */
|
|
/* ports suspend status arrays - max 31 ports for USB2, 15 for USB3 */
|
|
u32 port_c_suspend;
|
|
u32 suspended_ports;
|
|
u32 port_remote_wakeup;
|
|
unsigned long resume_done[USB_MAXCHILDREN];
|
|
/* which ports have started to resume */
|
|
unsigned long resuming_ports;
|
|
/* Which ports are waiting on RExit to U0 transition. */
|
|
unsigned long rexit_ports;
|
|
struct completion rexit_done[USB_MAXCHILDREN];
|
|
};
|
|
|
|
|
|
/*
|
|
* It can take up to 20 ms to transition from RExit to U0 on the
|
|
* Intel Lynx Point LP xHCI host.
|
|
*/
|
|
#define XHCI_MAX_REXIT_TIMEOUT (20 * 1000)
|
|
|
|
static inline unsigned int hcd_index(struct usb_hcd *hcd)
|
|
{
|
|
if (hcd->speed == HCD_USB3)
|
|
return 0;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
/* There is one xhci_hcd structure per controller */
|
|
struct xhci_hcd {
|
|
struct usb_hcd *main_hcd;
|
|
struct usb_hcd *shared_hcd;
|
|
/* glue to PCI and HCD framework */
|
|
struct xhci_cap_regs __iomem *cap_regs;
|
|
struct xhci_op_regs __iomem *op_regs;
|
|
struct xhci_run_regs __iomem *run_regs;
|
|
struct xhci_doorbell_array __iomem *dba;
|
|
/* Our HCD's current interrupter register set */
|
|
struct xhci_intr_reg __iomem *ir_set;
|
|
|
|
/* Cached register copies of read-only HC data */
|
|
__u32 hcs_params1;
|
|
__u32 hcs_params2;
|
|
__u32 hcs_params3;
|
|
__u32 hcc_params;
|
|
|
|
spinlock_t lock;
|
|
|
|
/* packed release number */
|
|
u8 sbrn;
|
|
u16 hci_version;
|
|
u8 max_slots;
|
|
u8 max_interrupters;
|
|
u8 max_ports;
|
|
u8 isoc_threshold;
|
|
int event_ring_max;
|
|
int addr_64;
|
|
/* 4KB min, 128MB max */
|
|
int page_size;
|
|
/* Valid values are 12 to 20, inclusive */
|
|
int page_shift;
|
|
/* msi-x vectors */
|
|
int msix_count;
|
|
struct msix_entry *msix_entries;
|
|
/* optional clock */
|
|
struct clk *clk;
|
|
/* data structures */
|
|
struct xhci_device_context_array *dcbaa;
|
|
struct xhci_ring *cmd_ring;
|
|
unsigned int cmd_ring_state;
|
|
#define CMD_RING_STATE_RUNNING (1 << 0)
|
|
#define CMD_RING_STATE_ABORTED (1 << 1)
|
|
#define CMD_RING_STATE_STOPPED (1 << 2)
|
|
struct list_head cmd_list;
|
|
unsigned int cmd_ring_reserved_trbs;
|
|
struct timer_list cmd_timer;
|
|
struct xhci_command *current_cmd;
|
|
struct xhci_ring *event_ring;
|
|
struct xhci_erst erst;
|
|
/* Scratchpad */
|
|
struct xhci_scratchpad *scratchpad;
|
|
/* Store LPM test failed devices' information */
|
|
struct list_head lpm_failed_devs;
|
|
|
|
/* slot enabling and address device helpers */
|
|
struct completion addr_dev;
|
|
int slot_id;
|
|
/* For USB 3.0 LPM enable/disable. */
|
|
struct xhci_command *lpm_command;
|
|
/* Internal mirror of the HW's dcbaa */
|
|
struct xhci_virt_device *devs[MAX_HC_SLOTS];
|
|
/* For keeping track of bandwidth domains per roothub. */
|
|
struct xhci_root_port_bw_info *rh_bw;
|
|
|
|
/* DMA pools */
|
|
struct dma_pool *device_pool;
|
|
struct dma_pool *segment_pool;
|
|
struct dma_pool *small_streams_pool;
|
|
struct dma_pool *medium_streams_pool;
|
|
|
|
/* Host controller watchdog timer structures */
|
|
unsigned int xhc_state;
|
|
|
|
u32 command;
|
|
struct s3_save s3;
|
|
/* Host controller is dying - not responding to commands. "I'm not dead yet!"
|
|
*
|
|
* xHC interrupts have been disabled and a watchdog timer will (or has already)
|
|
* halt the xHCI host, and complete all URBs with an -ESHUTDOWN code. Any code
|
|
* that sees this status (other than the timer that set it) should stop touching
|
|
* hardware immediately. Interrupt handlers should return immediately when
|
|
* they see this status (any time they drop and re-acquire xhci->lock).
|
|
* xhci_urb_dequeue() should call usb_hcd_check_unlink_urb() and return without
|
|
* putting the TD on the canceled list, etc.
|
|
*
|
|
* There are no reports of xHCI host controllers that display this issue.
|
|
*/
|
|
#define XHCI_STATE_DYING (1 << 0)
|
|
#define XHCI_STATE_HALTED (1 << 1)
|
|
/* Statistics */
|
|
int error_bitmask;
|
|
unsigned int quirks;
|
|
#define XHCI_LINK_TRB_QUIRK (1 << 0)
|
|
#define XHCI_RESET_EP_QUIRK (1 << 1)
|
|
#define XHCI_NEC_HOST (1 << 2)
|
|
#define XHCI_AMD_PLL_FIX (1 << 3)
|
|
#define XHCI_SPURIOUS_SUCCESS (1 << 4)
|
|
/*
|
|
* Certain Intel host controllers have a limit to the number of endpoint
|
|
* contexts they can handle. Ideally, they would signal that they can't handle
|
|
* anymore endpoint contexts by returning a Resource Error for the Configure
|
|
* Endpoint command, but they don't. Instead they expect software to keep track
|
|
* of the number of active endpoints for them, across configure endpoint
|
|
* commands, reset device commands, disable slot commands, and address device
|
|
* commands.
|
|
*/
|
|
#define XHCI_EP_LIMIT_QUIRK (1 << 5)
|
|
#define XHCI_BROKEN_MSI (1 << 6)
|
|
#define XHCI_RESET_ON_RESUME (1 << 7)
|
|
#define XHCI_SW_BW_CHECKING (1 << 8)
|
|
#define XHCI_AMD_0x96_HOST (1 << 9)
|
|
#define XHCI_TRUST_TX_LENGTH (1 << 10)
|
|
#define XHCI_LPM_SUPPORT (1 << 11)
|
|
#define XHCI_INTEL_HOST (1 << 12)
|
|
#define XHCI_SPURIOUS_REBOOT (1 << 13)
|
|
#define XHCI_COMP_MODE_QUIRK (1 << 14)
|
|
#define XHCI_AVOID_BEI (1 << 15)
|
|
#define XHCI_PLAT (1 << 16)
|
|
#define XHCI_SLOW_SUSPEND (1 << 17)
|
|
#define XHCI_SPURIOUS_WAKEUP (1 << 18)
|
|
/* For controllers with a broken beyond repair streams implementation */
|
|
#define XHCI_BROKEN_STREAMS (1 << 19)
|
|
#define XHCI_PME_STUCK_QUIRK (1 << 20)
|
|
unsigned int num_active_eps;
|
|
unsigned int limit_active_eps;
|
|
/* There are two roothubs to keep track of bus suspend info for */
|
|
struct xhci_bus_state bus_state[2];
|
|
/* Is each xHCI roothub port a USB 3.0, USB 2.0, or USB 1.1 port? */
|
|
u8 *port_array;
|
|
/* Array of pointers to USB 3.0 PORTSC registers */
|
|
__le32 __iomem **usb3_ports;
|
|
unsigned int num_usb3_ports;
|
|
/* Array of pointers to USB 2.0 PORTSC registers */
|
|
__le32 __iomem **usb2_ports;
|
|
unsigned int num_usb2_ports;
|
|
/* support xHCI 0.96 spec USB2 software LPM */
|
|
unsigned sw_lpm_support:1;
|
|
/* support xHCI 1.0 spec USB2 hardware LPM */
|
|
unsigned hw_lpm_support:1;
|
|
/* cached usb2 extened protocol capabilites */
|
|
u32 *ext_caps;
|
|
unsigned int num_ext_caps;
|
|
/* Compliance Mode Recovery Data */
|
|
struct timer_list comp_mode_recovery_timer;
|
|
u32 port_status_u0;
|
|
/* Compliance Mode Timer Triggered every 2 seconds */
|
|
#define COMP_MODE_RCVRY_MSECS 2000
|
|
};
|
|
|
|
/* convert between an HCD pointer and the corresponding EHCI_HCD */
|
|
static inline struct xhci_hcd *hcd_to_xhci(struct usb_hcd *hcd)
|
|
{
|
|
return *((struct xhci_hcd **) (hcd->hcd_priv));
|
|
}
|
|
|
|
static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci)
|
|
{
|
|
return xhci->main_hcd;
|
|
}
|
|
|
|
#define xhci_dbg(xhci, fmt, args...) \
|
|
dev_dbg(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
|
|
#define xhci_err(xhci, fmt, args...) \
|
|
dev_err(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
|
|
#define xhci_warn(xhci, fmt, args...) \
|
|
dev_warn(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
|
|
#define xhci_warn_ratelimited(xhci, fmt, args...) \
|
|
dev_warn_ratelimited(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
|
|
#define xhci_info(xhci, fmt, args...) \
|
|
dev_info(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
|
|
|
|
/*
|
|
* Registers should always be accessed with double word or quad word accesses.
|
|
*
|
|
* Some xHCI implementations may support 64-bit address pointers. Registers
|
|
* with 64-bit address pointers should be written to with dword accesses by
|
|
* writing the low dword first (ptr[0]), then the high dword (ptr[1]) second.
|
|
* xHCI implementations that do not support 64-bit address pointers will ignore
|
|
* the high dword, and write order is irrelevant.
|
|
*/
|
|
static inline u64 xhci_read_64(const struct xhci_hcd *xhci,
|
|
__le64 __iomem *regs)
|
|
{
|
|
__u32 __iomem *ptr = (__u32 __iomem *) regs;
|
|
u64 val_lo = readl(ptr);
|
|
u64 val_hi = readl(ptr + 1);
|
|
return val_lo + (val_hi << 32);
|
|
}
|
|
static inline void xhci_write_64(struct xhci_hcd *xhci,
|
|
const u64 val, __le64 __iomem *regs)
|
|
{
|
|
__u32 __iomem *ptr = (__u32 __iomem *) regs;
|
|
u32 val_lo = lower_32_bits(val);
|
|
u32 val_hi = upper_32_bits(val);
|
|
|
|
writel(val_lo, ptr);
|
|
writel(val_hi, ptr + 1);
|
|
}
|
|
|
|
static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci)
|
|
{
|
|
return xhci->quirks & XHCI_LINK_TRB_QUIRK;
|
|
}
|
|
|
|
/* xHCI debugging */
|
|
void xhci_print_ir_set(struct xhci_hcd *xhci, int set_num);
|
|
void xhci_print_registers(struct xhci_hcd *xhci);
|
|
void xhci_dbg_regs(struct xhci_hcd *xhci);
|
|
void xhci_print_run_regs(struct xhci_hcd *xhci);
|
|
void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb);
|
|
void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb);
|
|
void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg);
|
|
void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring);
|
|
void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst);
|
|
void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci);
|
|
void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring);
|
|
void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep);
|
|
char *xhci_get_slot_state(struct xhci_hcd *xhci,
|
|
struct xhci_container_ctx *ctx);
|
|
void xhci_dbg_ep_rings(struct xhci_hcd *xhci,
|
|
unsigned int slot_id, unsigned int ep_index,
|
|
struct xhci_virt_ep *ep);
|
|
void xhci_dbg_trace(struct xhci_hcd *xhci, void (*trace)(struct va_format *),
|
|
const char *fmt, ...);
|
|
|
|
/* xHCI memory management */
|
|
void xhci_mem_cleanup(struct xhci_hcd *xhci);
|
|
int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags);
|
|
void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id);
|
|
int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, struct usb_device *udev, gfp_t flags);
|
|
int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev);
|
|
void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci,
|
|
struct usb_device *udev);
|
|
unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc);
|
|
unsigned int xhci_get_endpoint_address(unsigned int ep_index);
|
|
unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc);
|
|
unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index);
|
|
unsigned int xhci_last_valid_endpoint(u32 added_ctxs);
|
|
void xhci_endpoint_zero(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_host_endpoint *ep);
|
|
void xhci_drop_ep_from_interval_table(struct xhci_hcd *xhci,
|
|
struct xhci_bw_info *ep_bw,
|
|
struct xhci_interval_bw_table *bw_table,
|
|
struct usb_device *udev,
|
|
struct xhci_virt_ep *virt_ep,
|
|
struct xhci_tt_bw_info *tt_info);
|
|
void xhci_update_tt_active_eps(struct xhci_hcd *xhci,
|
|
struct xhci_virt_device *virt_dev,
|
|
int old_active_eps);
|
|
void xhci_clear_endpoint_bw_info(struct xhci_bw_info *bw_info);
|
|
void xhci_update_bw_info(struct xhci_hcd *xhci,
|
|
struct xhci_container_ctx *in_ctx,
|
|
struct xhci_input_control_ctx *ctrl_ctx,
|
|
struct xhci_virt_device *virt_dev);
|
|
void xhci_endpoint_copy(struct xhci_hcd *xhci,
|
|
struct xhci_container_ctx *in_ctx,
|
|
struct xhci_container_ctx *out_ctx,
|
|
unsigned int ep_index);
|
|
void xhci_slot_copy(struct xhci_hcd *xhci,
|
|
struct xhci_container_ctx *in_ctx,
|
|
struct xhci_container_ctx *out_ctx);
|
|
int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev,
|
|
struct usb_device *udev, struct usb_host_endpoint *ep,
|
|
gfp_t mem_flags);
|
|
void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring);
|
|
int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring,
|
|
unsigned int num_trbs, gfp_t flags);
|
|
void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci,
|
|
struct xhci_virt_device *virt_dev,
|
|
unsigned int ep_index);
|
|
struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci,
|
|
unsigned int num_stream_ctxs,
|
|
unsigned int num_streams, gfp_t flags);
|
|
void xhci_free_stream_info(struct xhci_hcd *xhci,
|
|
struct xhci_stream_info *stream_info);
|
|
void xhci_setup_streams_ep_input_ctx(struct xhci_hcd *xhci,
|
|
struct xhci_ep_ctx *ep_ctx,
|
|
struct xhci_stream_info *stream_info);
|
|
void xhci_setup_no_streams_ep_input_ctx(struct xhci_ep_ctx *ep_ctx,
|
|
struct xhci_virt_ep *ep);
|
|
void xhci_free_device_endpoint_resources(struct xhci_hcd *xhci,
|
|
struct xhci_virt_device *virt_dev, bool drop_control_ep);
|
|
struct xhci_ring *xhci_dma_to_transfer_ring(
|
|
struct xhci_virt_ep *ep,
|
|
u64 address);
|
|
struct xhci_ring *xhci_stream_id_to_ring(
|
|
struct xhci_virt_device *dev,
|
|
unsigned int ep_index,
|
|
unsigned int stream_id);
|
|
struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci,
|
|
bool allocate_in_ctx, bool allocate_completion,
|
|
gfp_t mem_flags);
|
|
void xhci_urb_free_priv(struct urb_priv *urb_priv);
|
|
void xhci_free_command(struct xhci_hcd *xhci,
|
|
struct xhci_command *command);
|
|
|
|
/* xHCI host controller glue */
|
|
typedef void (*xhci_get_quirks_t)(struct device *, struct xhci_hcd *);
|
|
int xhci_handshake(void __iomem *ptr, u32 mask, u32 done, int usec);
|
|
void xhci_quiesce(struct xhci_hcd *xhci);
|
|
int xhci_halt(struct xhci_hcd *xhci);
|
|
int xhci_reset(struct xhci_hcd *xhci);
|
|
int xhci_init(struct usb_hcd *hcd);
|
|
int xhci_run(struct usb_hcd *hcd);
|
|
void xhci_stop(struct usb_hcd *hcd);
|
|
void xhci_shutdown(struct usb_hcd *hcd);
|
|
int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks);
|
|
void xhci_init_driver(struct hc_driver *drv, int (*setup_fn)(struct usb_hcd *));
|
|
|
|
#ifdef CONFIG_PM
|
|
int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup);
|
|
int xhci_resume(struct xhci_hcd *xhci, bool hibernated);
|
|
#else
|
|
#define xhci_suspend NULL
|
|
#define xhci_resume NULL
|
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#endif
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int xhci_get_frame(struct usb_hcd *hcd);
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irqreturn_t xhci_irq(struct usb_hcd *hcd);
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irqreturn_t xhci_msi_irq(int irq, void *hcd);
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int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev);
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void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev);
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int xhci_alloc_tt_info(struct xhci_hcd *xhci,
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struct xhci_virt_device *virt_dev,
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struct usb_device *hdev,
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struct usb_tt *tt, gfp_t mem_flags);
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int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev,
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struct usb_host_endpoint **eps, unsigned int num_eps,
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unsigned int num_streams, gfp_t mem_flags);
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int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev,
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struct usb_host_endpoint **eps, unsigned int num_eps,
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gfp_t mem_flags);
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int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev);
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int xhci_enable_device(struct usb_hcd *hcd, struct usb_device *udev);
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int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev);
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int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd,
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struct usb_device *udev, int enable);
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int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
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struct usb_tt *tt, gfp_t mem_flags);
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int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags);
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int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status);
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int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);
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int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);
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void xhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
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int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev);
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int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
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void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
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/* xHCI ring, segment, TRB, and TD functions */
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dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb);
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struct xhci_segment *trb_in_td(struct xhci_hcd *xhci,
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struct xhci_segment *start_seg, union xhci_trb *start_trb,
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union xhci_trb *end_trb, dma_addr_t suspect_dma, bool debug);
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int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code);
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void xhci_ring_cmd_db(struct xhci_hcd *xhci);
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int xhci_queue_slot_control(struct xhci_hcd *xhci, struct xhci_command *cmd,
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u32 trb_type, u32 slot_id);
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int xhci_queue_address_device(struct xhci_hcd *xhci, struct xhci_command *cmd,
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dma_addr_t in_ctx_ptr, u32 slot_id, enum xhci_setup_dev);
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int xhci_queue_vendor_command(struct xhci_hcd *xhci, struct xhci_command *cmd,
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u32 field1, u32 field2, u32 field3, u32 field4);
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int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, struct xhci_command *cmd,
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int slot_id, unsigned int ep_index, int suspend);
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int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb,
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int slot_id, unsigned int ep_index);
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int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb,
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int slot_id, unsigned int ep_index);
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int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb,
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int slot_id, unsigned int ep_index);
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int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
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struct urb *urb, int slot_id, unsigned int ep_index);
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int xhci_queue_configure_endpoint(struct xhci_hcd *xhci,
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struct xhci_command *cmd, dma_addr_t in_ctx_ptr, u32 slot_id,
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bool command_must_succeed);
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int xhci_queue_evaluate_context(struct xhci_hcd *xhci, struct xhci_command *cmd,
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dma_addr_t in_ctx_ptr, u32 slot_id, bool command_must_succeed);
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int xhci_queue_reset_ep(struct xhci_hcd *xhci, struct xhci_command *cmd,
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int slot_id, unsigned int ep_index);
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int xhci_queue_reset_device(struct xhci_hcd *xhci, struct xhci_command *cmd,
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u32 slot_id);
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void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
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unsigned int slot_id, unsigned int ep_index,
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unsigned int stream_id, struct xhci_td *cur_td,
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struct xhci_dequeue_state *state);
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void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci,
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unsigned int slot_id, unsigned int ep_index,
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unsigned int stream_id,
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struct xhci_dequeue_state *deq_state);
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void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci,
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unsigned int ep_index, struct xhci_td *td);
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void xhci_queue_config_ep_quirk(struct xhci_hcd *xhci,
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unsigned int slot_id, unsigned int ep_index,
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struct xhci_dequeue_state *deq_state);
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void xhci_stop_endpoint_command_watchdog(unsigned long arg);
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void xhci_handle_command_timeout(unsigned long data);
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void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id,
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unsigned int ep_index, unsigned int stream_id);
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void xhci_cleanup_command_queue(struct xhci_hcd *xhci);
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/* xHCI roothub code */
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void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array,
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int port_id, u32 link_state);
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int xhci_enable_usb3_lpm_timeout(struct usb_hcd *hcd,
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struct usb_device *udev, enum usb3_link_state state);
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int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd,
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struct usb_device *udev, enum usb3_link_state state);
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void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array,
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int port_id, u32 port_bit);
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int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,
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char *buf, u16 wLength);
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int xhci_hub_status_data(struct usb_hcd *hcd, char *buf);
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int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1);
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#ifdef CONFIG_PM
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int xhci_bus_suspend(struct usb_hcd *hcd);
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int xhci_bus_resume(struct usb_hcd *hcd);
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#else
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#define xhci_bus_suspend NULL
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#define xhci_bus_resume NULL
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#endif /* CONFIG_PM */
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u32 xhci_port_state_to_neutral(u32 state);
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int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
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u16 port);
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void xhci_ring_device(struct xhci_hcd *xhci, int slot_id);
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/* xHCI contexts */
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struct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_container_ctx *ctx);
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struct xhci_slot_ctx *xhci_get_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx);
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struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int ep_index);
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#endif /* __LINUX_XHCI_HCD_H */
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