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/*
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* QEMU USB EHCI Emulation
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*
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* Copyright(c) 2008 Emutex Ltd. (address@hidden)
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*
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* EHCI project was started by Mark Burkley, with contributions by
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* Niels de Vos. David S. Ahern continued working on it. Kevin Wolf,
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* Jan Kiszka and Vincent Palatin contributed bugfixes.
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or(at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "hw.h" |
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#include "qemu-timer.h" |
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#include "usb.h" |
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#include "pci.h" |
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#include "monitor.h" |
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#include "trace.h" |
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#define EHCI_DEBUG 0 |
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|
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#if EHCI_DEBUG
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#define DPRINTF printf
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#else
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#define DPRINTF(...)
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#endif
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/* internal processing - reset HC to try and recover */
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#define USB_RET_PROCERR (-99) |
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#define MMIO_SIZE 0x1000 |
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/* Capability Registers Base Address - section 2.2 */
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#define CAPREGBASE 0x0000 |
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#define CAPLENGTH CAPREGBASE + 0x0000 // 1-byte, 0x0001 reserved |
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#define HCIVERSION CAPREGBASE + 0x0002 // 2-bytes, i/f version # |
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#define HCSPARAMS CAPREGBASE + 0x0004 // 4-bytes, structural params |
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#define HCCPARAMS CAPREGBASE + 0x0008 // 4-bytes, capability params |
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#define EECP HCCPARAMS + 1 |
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#define HCSPPORTROUTE1 CAPREGBASE + 0x000c |
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#define HCSPPORTROUTE2 CAPREGBASE + 0x0010 |
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|
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#define OPREGBASE 0x0020 // Operational Registers Base Address |
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#define USBCMD OPREGBASE + 0x0000 |
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#define USBCMD_RUNSTOP (1 << 0) // run / Stop |
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#define USBCMD_HCRESET (1 << 1) // HC Reset |
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#define USBCMD_FLS (3 << 2) // Frame List Size |
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#define USBCMD_FLS_SH 2 // Frame List Size Shift |
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#define USBCMD_PSE (1 << 4) // Periodic Schedule Enable |
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#define USBCMD_ASE (1 << 5) // Asynch Schedule Enable |
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#define USBCMD_IAAD (1 << 6) // Int Asynch Advance Doorbell |
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#define USBCMD_LHCR (1 << 7) // Light Host Controller Reset |
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#define USBCMD_ASPMC (3 << 8) // Async Sched Park Mode Count |
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#define USBCMD_ASPME (1 << 11) // Async Sched Park Mode Enable |
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#define USBCMD_ITC (0x7f << 16) // Int Threshold Control |
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#define USBCMD_ITC_SH 16 // Int Threshold Control Shift |
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|
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#define USBSTS OPREGBASE + 0x0004 |
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#define USBSTS_RO_MASK 0x0000003f |
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#define USBSTS_INT (1 << 0) // USB Interrupt |
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#define USBSTS_ERRINT (1 << 1) // Error Interrupt |
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#define USBSTS_PCD (1 << 2) // Port Change Detect |
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#define USBSTS_FLR (1 << 3) // Frame List Rollover |
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#define USBSTS_HSE (1 << 4) // Host System Error |
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#define USBSTS_IAA (1 << 5) // Interrupt on Async Advance |
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#define USBSTS_HALT (1 << 12) // HC Halted |
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#define USBSTS_REC (1 << 13) // Reclamation |
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#define USBSTS_PSS (1 << 14) // Periodic Schedule Status |
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#define USBSTS_ASS (1 << 15) // Asynchronous Schedule Status |
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|
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/*
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* Interrupt enable bits correspond to the interrupt active bits in USBSTS
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* so no need to redefine here.
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*/
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#define USBINTR OPREGBASE + 0x0008 |
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#define USBINTR_MASK 0x0000003f |
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#define FRINDEX OPREGBASE + 0x000c |
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#define CTRLDSSEGMENT OPREGBASE + 0x0010 |
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#define PERIODICLISTBASE OPREGBASE + 0x0014 |
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#define ASYNCLISTADDR OPREGBASE + 0x0018 |
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#define ASYNCLISTADDR_MASK 0xffffffe0 |
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#define CONFIGFLAG OPREGBASE + 0x0040 |
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#define PORTSC (OPREGBASE + 0x0044) |
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#define PORTSC_BEGIN PORTSC
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#define PORTSC_END (PORTSC + 4 * NB_PORTS) |
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/*
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* Bits that are reserved or are read-only are masked out of values
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* written to us by software
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*/
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#define PORTSC_RO_MASK 0x007001c0 |
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#define PORTSC_RWC_MASK 0x0000002a |
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#define PORTSC_WKOC_E (1 << 22) // Wake on Over Current Enable |
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#define PORTSC_WKDS_E (1 << 21) // Wake on Disconnect Enable |
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#define PORTSC_WKCN_E (1 << 20) // Wake on Connect Enable |
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#define PORTSC_PTC (15 << 16) // Port Test Control |
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#define PORTSC_PTC_SH 16 // Port Test Control shift |
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#define PORTSC_PIC (3 << 14) // Port Indicator Control |
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#define PORTSC_PIC_SH 14 // Port Indicator Control Shift |
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#define PORTSC_POWNER (1 << 13) // Port Owner |
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#define PORTSC_PPOWER (1 << 12) // Port Power |
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#define PORTSC_LINESTAT (3 << 10) // Port Line Status |
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#define PORTSC_LINESTAT_SH 10 // Port Line Status Shift |
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#define PORTSC_PRESET (1 << 8) // Port Reset |
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#define PORTSC_SUSPEND (1 << 7) // Port Suspend |
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#define PORTSC_FPRES (1 << 6) // Force Port Resume |
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#define PORTSC_OCC (1 << 5) // Over Current Change |
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#define PORTSC_OCA (1 << 4) // Over Current Active |
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#define PORTSC_PEDC (1 << 3) // Port Enable/Disable Change |
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#define PORTSC_PED (1 << 2) // Port Enable/Disable |
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#define PORTSC_CSC (1 << 1) // Connect Status Change |
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#define PORTSC_CONNECT (1 << 0) // Current Connect Status |
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#define FRAME_TIMER_FREQ 1000 |
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#define FRAME_TIMER_NS (1000000000 / FRAME_TIMER_FREQ) |
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#define NB_MAXINTRATE 8 // Max rate at which controller issues ints |
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#define NB_PORTS 4 // Number of downstream ports |
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#define BUFF_SIZE 5*4096 // Max bytes to transfer per transaction |
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#define MAX_ITERATIONS 20 // Max number of QH before we break the loop |
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#define MAX_QH 100 // Max allowable queue heads in a chain |
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/* Internal periodic / asynchronous schedule state machine states
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*/
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typedef enum { |
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EST_INACTIVE = 1000,
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EST_ACTIVE, |
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EST_EXECUTING, |
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EST_SLEEPING, |
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/* The following states are internal to the state machine function
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*/
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EST_WAITLISTHEAD, |
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EST_FETCHENTRY, |
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EST_FETCHQH, |
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EST_FETCHITD, |
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EST_ADVANCEQUEUE, |
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EST_FETCHQTD, |
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EST_EXECUTE, |
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EST_WRITEBACK, |
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EST_HORIZONTALQH |
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} EHCI_STATES; |
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/* macros for accessing fields within next link pointer entry */
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#define NLPTR_GET(x) ((x) & 0xffffffe0) |
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#define NLPTR_TYPE_GET(x) (((x) >> 1) & 3) |
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#define NLPTR_TBIT(x) ((x) & 1) // 1=invalid, 0=valid |
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/* link pointer types */
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#define NLPTR_TYPE_ITD 0 // isoc xfer descriptor |
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#define NLPTR_TYPE_QH 1 // queue head |
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#define NLPTR_TYPE_STITD 2 // split xaction, isoc xfer descriptor |
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#define NLPTR_TYPE_FSTN 3 // frame span traversal node |
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/* EHCI spec version 1.0 Section 3.3
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*/
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typedef struct EHCIitd { |
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uint32_t next; |
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uint32_t transact[8];
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#define ITD_XACT_ACTIVE (1 << 31) |
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#define ITD_XACT_DBERROR (1 << 30) |
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#define ITD_XACT_BABBLE (1 << 29) |
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#define ITD_XACT_XACTERR (1 << 28) |
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#define ITD_XACT_LENGTH_MASK 0x0fff0000 |
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#define ITD_XACT_LENGTH_SH 16 |
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#define ITD_XACT_IOC (1 << 15) |
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#define ITD_XACT_PGSEL_MASK 0x00007000 |
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#define ITD_XACT_PGSEL_SH 12 |
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#define ITD_XACT_OFFSET_MASK 0x00000fff |
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uint32_t bufptr[7];
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#define ITD_BUFPTR_MASK 0xfffff000 |
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#define ITD_BUFPTR_SH 12 |
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#define ITD_BUFPTR_EP_MASK 0x00000f00 |
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#define ITD_BUFPTR_EP_SH 8 |
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#define ITD_BUFPTR_DEVADDR_MASK 0x0000007f |
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#define ITD_BUFPTR_DEVADDR_SH 0 |
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#define ITD_BUFPTR_DIRECTION (1 << 11) |
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#define ITD_BUFPTR_MAXPKT_MASK 0x000007ff |
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#define ITD_BUFPTR_MAXPKT_SH 0 |
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#define ITD_BUFPTR_MULT_MASK 0x00000003 |
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#define ITD_BUFPTR_MULT_SH 0 |
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} EHCIitd; |
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/* EHCI spec version 1.0 Section 3.4
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*/
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typedef struct EHCIsitd { |
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uint32_t next; // Standard next link pointer
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uint32_t epchar; |
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#define SITD_EPCHAR_IO (1 << 31) |
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#define SITD_EPCHAR_PORTNUM_MASK 0x7f000000 |
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#define SITD_EPCHAR_PORTNUM_SH 24 |
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#define SITD_EPCHAR_HUBADD_MASK 0x007f0000 |
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#define SITD_EPCHAR_HUBADDR_SH 16 |
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#define SITD_EPCHAR_EPNUM_MASK 0x00000f00 |
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#define SITD_EPCHAR_EPNUM_SH 8 |
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#define SITD_EPCHAR_DEVADDR_MASK 0x0000007f |
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uint32_t uframe; |
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#define SITD_UFRAME_CMASK_MASK 0x0000ff00 |
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#define SITD_UFRAME_CMASK_SH 8 |
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#define SITD_UFRAME_SMASK_MASK 0x000000ff |
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uint32_t results; |
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#define SITD_RESULTS_IOC (1 << 31) |
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#define SITD_RESULTS_PGSEL (1 << 30) |
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#define SITD_RESULTS_TBYTES_MASK 0x03ff0000 |
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#define SITD_RESULTS_TYBYTES_SH 16 |
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#define SITD_RESULTS_CPROGMASK_MASK 0x0000ff00 |
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#define SITD_RESULTS_CPROGMASK_SH 8 |
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#define SITD_RESULTS_ACTIVE (1 << 7) |
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#define SITD_RESULTS_ERR (1 << 6) |
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#define SITD_RESULTS_DBERR (1 << 5) |
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#define SITD_RESULTS_BABBLE (1 << 4) |
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#define SITD_RESULTS_XACTERR (1 << 3) |
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#define SITD_RESULTS_MISSEDUF (1 << 2) |
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#define SITD_RESULTS_SPLITXSTATE (1 << 1) |
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uint32_t bufptr[2];
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#define SITD_BUFPTR_MASK 0xfffff000 |
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#define SITD_BUFPTR_CURROFF_MASK 0x00000fff |
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#define SITD_BUFPTR_TPOS_MASK 0x00000018 |
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#define SITD_BUFPTR_TPOS_SH 3 |
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#define SITD_BUFPTR_TCNT_MASK 0x00000007 |
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uint32_t backptr; // Standard next link pointer
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} EHCIsitd; |
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/* EHCI spec version 1.0 Section 3.5
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*/
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typedef struct EHCIqtd { |
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uint32_t next; // Standard next link pointer
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uint32_t altnext; // Standard next link pointer
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uint32_t token; |
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#define QTD_TOKEN_DTOGGLE (1 << 31) |
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#define QTD_TOKEN_TBYTES_MASK 0x7fff0000 |
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#define QTD_TOKEN_TBYTES_SH 16 |
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#define QTD_TOKEN_IOC (1 << 15) |
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#define QTD_TOKEN_CPAGE_MASK 0x00007000 |
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#define QTD_TOKEN_CPAGE_SH 12 |
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#define QTD_TOKEN_CERR_MASK 0x00000c00 |
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#define QTD_TOKEN_CERR_SH 10 |
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#define QTD_TOKEN_PID_MASK 0x00000300 |
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#define QTD_TOKEN_PID_SH 8 |
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#define QTD_TOKEN_ACTIVE (1 << 7) |
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#define QTD_TOKEN_HALT (1 << 6) |
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#define QTD_TOKEN_DBERR (1 << 5) |
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#define QTD_TOKEN_BABBLE (1 << 4) |
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#define QTD_TOKEN_XACTERR (1 << 3) |
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#define QTD_TOKEN_MISSEDUF (1 << 2) |
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#define QTD_TOKEN_SPLITXSTATE (1 << 1) |
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#define QTD_TOKEN_PING (1 << 0) |
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|
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uint32_t bufptr[5]; // Standard buffer pointer |
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#define QTD_BUFPTR_MASK 0xfffff000 |
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} EHCIqtd; |
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/* EHCI spec version 1.0 Section 3.6
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*/
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typedef struct EHCIqh { |
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uint32_t next; // Standard next link pointer
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|
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/* endpoint characteristics */
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uint32_t epchar; |
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#define QH_EPCHAR_RL_MASK 0xf0000000 |
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#define QH_EPCHAR_RL_SH 28 |
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#define QH_EPCHAR_C (1 << 27) |
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#define QH_EPCHAR_MPLEN_MASK 0x07FF0000 |
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#define QH_EPCHAR_MPLEN_SH 16 |
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#define QH_EPCHAR_H (1 << 15) |
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#define QH_EPCHAR_DTC (1 << 14) |
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#define QH_EPCHAR_EPS_MASK 0x00003000 |
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#define QH_EPCHAR_EPS_SH 12 |
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#define EHCI_QH_EPS_FULL 0 |
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#define EHCI_QH_EPS_LOW 1 |
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#define EHCI_QH_EPS_HIGH 2 |
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#define EHCI_QH_EPS_RESERVED 3 |
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|
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#define QH_EPCHAR_EP_MASK 0x00000f00 |
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#define QH_EPCHAR_EP_SH 8 |
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#define QH_EPCHAR_I (1 << 7) |
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#define QH_EPCHAR_DEVADDR_MASK 0x0000007f |
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#define QH_EPCHAR_DEVADDR_SH 0 |
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|
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/* endpoint capabilities */
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uint32_t epcap; |
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#define QH_EPCAP_MULT_MASK 0xc0000000 |
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#define QH_EPCAP_MULT_SH 30 |
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#define QH_EPCAP_PORTNUM_MASK 0x3f800000 |
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#define QH_EPCAP_PORTNUM_SH 23 |
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#define QH_EPCAP_HUBADDR_MASK 0x007f0000 |
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#define QH_EPCAP_HUBADDR_SH 16 |
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#define QH_EPCAP_CMASK_MASK 0x0000ff00 |
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#define QH_EPCAP_CMASK_SH 8 |
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#define QH_EPCAP_SMASK_MASK 0x000000ff |
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#define QH_EPCAP_SMASK_SH 0 |
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|
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uint32_t current_qtd; // Standard next link pointer
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uint32_t next_qtd; // Standard next link pointer
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uint32_t altnext_qtd; |
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#define QH_ALTNEXT_NAKCNT_MASK 0x0000001e |
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#define QH_ALTNEXT_NAKCNT_SH 1 |
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|
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uint32_t token; // Same as QTD token
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uint32_t bufptr[5]; // Standard buffer pointer |
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#define BUFPTR_CPROGMASK_MASK 0x000000ff |
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#define BUFPTR_FRAMETAG_MASK 0x0000001f |
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#define BUFPTR_SBYTES_MASK 0x00000fe0 |
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#define BUFPTR_SBYTES_SH 5 |
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} EHCIqh; |
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|
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/* EHCI spec version 1.0 Section 3.7
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*/
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typedef struct EHCIfstn { |
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uint32_t next; // Standard next link pointer
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uint32_t backptr; // Standard next link pointer
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} EHCIfstn; |
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|
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typedef struct EHCIQueue EHCIQueue; |
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typedef struct EHCIState EHCIState; |
337 |
|
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enum async_state {
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EHCI_ASYNC_NONE = 0,
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EHCI_ASYNC_INFLIGHT, |
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EHCI_ASYNC_FINISHED, |
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}; |
343 |
|
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struct EHCIQueue {
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EHCIState *ehci; |
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QTAILQ_ENTRY(EHCIQueue) next; |
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bool async_schedule;
|
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uint32_t seen; |
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uint64_t ts; |
350 |
|
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/* cached data from guest - needs to be flushed
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* when guest removes an entry (doorbell, handshake sequence)
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*/
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EHCIqh qh; // copy of current QH (being worked on)
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uint32_t qhaddr; // address QH read from
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EHCIqtd qtd; // copy of current QTD (being worked on)
|
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uint32_t qtdaddr; // address QTD read from
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|
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USBPacket packet; |
360 |
uint8_t buffer[BUFF_SIZE]; |
361 |
int pid;
|
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uint32_t tbytes; |
363 |
enum async_state async;
|
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int usb_status;
|
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}; |
366 |
|
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struct EHCIState {
|
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PCIDevice dev; |
369 |
USBBus bus; |
370 |
qemu_irq irq; |
371 |
target_phys_addr_t mem_base; |
372 |
int mem;
|
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int companion_count;
|
374 |
|
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/* properties */
|
376 |
uint32_t freq; |
377 |
uint32_t maxframes; |
378 |
|
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/*
|
380 |
* EHCI spec version 1.0 Section 2.3
|
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* Host Controller Operational Registers
|
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*/
|
383 |
union {
|
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uint8_t mmio[MMIO_SIZE]; |
385 |
struct {
|
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uint8_t cap[OPREGBASE]; |
387 |
uint32_t usbcmd; |
388 |
uint32_t usbsts; |
389 |
uint32_t usbintr; |
390 |
uint32_t frindex; |
391 |
uint32_t ctrldssegment; |
392 |
uint32_t periodiclistbase; |
393 |
uint32_t asynclistaddr; |
394 |
uint32_t notused[9];
|
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uint32_t configflag; |
396 |
uint32_t portsc[NB_PORTS]; |
397 |
}; |
398 |
}; |
399 |
|
400 |
/*
|
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* Internal states, shadow registers, etc
|
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*/
|
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uint32_t sofv; |
404 |
QEMUTimer *frame_timer; |
405 |
int attach_poll_counter;
|
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int astate; // Current state in asynchronous schedule |
407 |
int pstate; // Current state in periodic schedule |
408 |
USBPort ports[NB_PORTS]; |
409 |
USBPort *companion_ports[NB_PORTS]; |
410 |
uint32_t usbsts_pending; |
411 |
QTAILQ_HEAD(, EHCIQueue) queues; |
412 |
|
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uint32_t a_fetch_addr; // which address to look at next
|
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uint32_t p_fetch_addr; // which address to look at next
|
415 |
|
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USBPacket ipacket; |
417 |
uint8_t ibuffer[BUFF_SIZE]; |
418 |
int isoch_pause;
|
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|
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uint64_t last_run_ns; |
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}; |
422 |
|
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#define SET_LAST_RUN_CLOCK(s) \
|
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(s)->last_run_ns = qemu_get_clock_ns(vm_clock); |
425 |
|
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/* nifty macros from Arnon's EHCI version */
|
427 |
#define get_field(data, field) \
|
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(((data) & field##_MASK) >> field##_SH) |
429 |
|
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#define set_field(data, newval, field) do { \ |
431 |
uint32_t val = *data; \ |
432 |
val &= ~ field##_MASK; \ |
433 |
val |= ((newval) << field##_SH) & field##_MASK; \ |
434 |
*data = val; \ |
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} while(0) |
436 |
|
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static const char *ehci_state_names[] = { |
438 |
[ EST_INACTIVE ] = "INACTIVE",
|
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[ EST_ACTIVE ] = "ACTIVE",
|
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[ EST_EXECUTING ] = "EXECUTING",
|
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[ EST_SLEEPING ] = "SLEEPING",
|
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[ EST_WAITLISTHEAD ] = "WAITLISTHEAD",
|
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[ EST_FETCHENTRY ] = "FETCH ENTRY",
|
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[ EST_FETCHQH ] = "FETCH QH",
|
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[ EST_FETCHITD ] = "FETCH ITD",
|
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[ EST_ADVANCEQUEUE ] = "ADVANCEQUEUE",
|
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[ EST_FETCHQTD ] = "FETCH QTD",
|
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[ EST_EXECUTE ] = "EXECUTE",
|
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[ EST_WRITEBACK ] = "WRITEBACK",
|
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[ EST_HORIZONTALQH ] = "HORIZONTALQH",
|
451 |
}; |
452 |
|
453 |
static const char *ehci_mmio_names[] = { |
454 |
[ CAPLENGTH ] = "CAPLENGTH",
|
455 |
[ HCIVERSION ] = "HCIVERSION",
|
456 |
[ HCSPARAMS ] = "HCSPARAMS",
|
457 |
[ HCCPARAMS ] = "HCCPARAMS",
|
458 |
[ USBCMD ] = "USBCMD",
|
459 |
[ USBSTS ] = "USBSTS",
|
460 |
[ USBINTR ] = "USBINTR",
|
461 |
[ FRINDEX ] = "FRINDEX",
|
462 |
[ PERIODICLISTBASE ] = "P-LIST BASE",
|
463 |
[ ASYNCLISTADDR ] = "A-LIST ADDR",
|
464 |
[ PORTSC_BEGIN ] = "PORTSC #0",
|
465 |
[ PORTSC_BEGIN + 4] = "PORTSC #1", |
466 |
[ PORTSC_BEGIN + 8] = "PORTSC #2", |
467 |
[ PORTSC_BEGIN + 12] = "PORTSC #3", |
468 |
[ CONFIGFLAG ] = "CONFIGFLAG",
|
469 |
}; |
470 |
|
471 |
static const char *nr2str(const char **n, size_t len, uint32_t nr) |
472 |
{ |
473 |
if (nr < len && n[nr] != NULL) { |
474 |
return n[nr];
|
475 |
} else {
|
476 |
return "unknown"; |
477 |
} |
478 |
} |
479 |
|
480 |
static const char *state2str(uint32_t state) |
481 |
{ |
482 |
return nr2str(ehci_state_names, ARRAY_SIZE(ehci_state_names), state);
|
483 |
} |
484 |
|
485 |
static const char *addr2str(target_phys_addr_t addr) |
486 |
{ |
487 |
return nr2str(ehci_mmio_names, ARRAY_SIZE(ehci_mmio_names), addr);
|
488 |
} |
489 |
|
490 |
static void ehci_trace_usbsts(uint32_t mask, int state) |
491 |
{ |
492 |
/* interrupts */
|
493 |
if (mask & USBSTS_INT) {
|
494 |
trace_usb_ehci_usbsts("INT", state);
|
495 |
} |
496 |
if (mask & USBSTS_ERRINT) {
|
497 |
trace_usb_ehci_usbsts("ERRINT", state);
|
498 |
} |
499 |
if (mask & USBSTS_PCD) {
|
500 |
trace_usb_ehci_usbsts("PCD", state);
|
501 |
} |
502 |
if (mask & USBSTS_FLR) {
|
503 |
trace_usb_ehci_usbsts("FLR", state);
|
504 |
} |
505 |
if (mask & USBSTS_HSE) {
|
506 |
trace_usb_ehci_usbsts("HSE", state);
|
507 |
} |
508 |
if (mask & USBSTS_IAA) {
|
509 |
trace_usb_ehci_usbsts("IAA", state);
|
510 |
} |
511 |
|
512 |
/* status */
|
513 |
if (mask & USBSTS_HALT) {
|
514 |
trace_usb_ehci_usbsts("HALT", state);
|
515 |
} |
516 |
if (mask & USBSTS_REC) {
|
517 |
trace_usb_ehci_usbsts("REC", state);
|
518 |
} |
519 |
if (mask & USBSTS_PSS) {
|
520 |
trace_usb_ehci_usbsts("PSS", state);
|
521 |
} |
522 |
if (mask & USBSTS_ASS) {
|
523 |
trace_usb_ehci_usbsts("ASS", state);
|
524 |
} |
525 |
} |
526 |
|
527 |
static inline void ehci_set_usbsts(EHCIState *s, int mask) |
528 |
{ |
529 |
if ((s->usbsts & mask) == mask) {
|
530 |
return;
|
531 |
} |
532 |
ehci_trace_usbsts(mask, 1);
|
533 |
s->usbsts |= mask; |
534 |
} |
535 |
|
536 |
static inline void ehci_clear_usbsts(EHCIState *s, int mask) |
537 |
{ |
538 |
if ((s->usbsts & mask) == 0) { |
539 |
return;
|
540 |
} |
541 |
ehci_trace_usbsts(mask, 0);
|
542 |
s->usbsts &= ~mask; |
543 |
} |
544 |
|
545 |
static inline void ehci_set_interrupt(EHCIState *s, int intr) |
546 |
{ |
547 |
int level = 0; |
548 |
|
549 |
// TODO honour interrupt threshold requests
|
550 |
|
551 |
ehci_set_usbsts(s, intr); |
552 |
|
553 |
if ((s->usbsts & USBINTR_MASK) & s->usbintr) {
|
554 |
level = 1;
|
555 |
} |
556 |
|
557 |
qemu_set_irq(s->irq, level); |
558 |
} |
559 |
|
560 |
static inline void ehci_record_interrupt(EHCIState *s, int intr) |
561 |
{ |
562 |
s->usbsts_pending |= intr; |
563 |
} |
564 |
|
565 |
static inline void ehci_commit_interrupt(EHCIState *s) |
566 |
{ |
567 |
if (!s->usbsts_pending) {
|
568 |
return;
|
569 |
} |
570 |
ehci_set_interrupt(s, s->usbsts_pending); |
571 |
s->usbsts_pending = 0;
|
572 |
} |
573 |
|
574 |
static void ehci_set_state(EHCIState *s, int async, int state) |
575 |
{ |
576 |
if (async) {
|
577 |
trace_usb_ehci_state("async", state2str(state));
|
578 |
s->astate = state; |
579 |
} else {
|
580 |
trace_usb_ehci_state("periodic", state2str(state));
|
581 |
s->pstate = state; |
582 |
} |
583 |
} |
584 |
|
585 |
static int ehci_get_state(EHCIState *s, int async) |
586 |
{ |
587 |
return async ? s->astate : s->pstate;
|
588 |
} |
589 |
|
590 |
static void ehci_set_fetch_addr(EHCIState *s, int async, uint32_t addr) |
591 |
{ |
592 |
if (async) {
|
593 |
s->a_fetch_addr = addr; |
594 |
} else {
|
595 |
s->p_fetch_addr = addr; |
596 |
} |
597 |
} |
598 |
|
599 |
static int ehci_get_fetch_addr(EHCIState *s, int async) |
600 |
{ |
601 |
return async ? s->a_fetch_addr : s->p_fetch_addr;
|
602 |
} |
603 |
|
604 |
static void ehci_trace_qh(EHCIQueue *q, target_phys_addr_t addr, EHCIqh *qh) |
605 |
{ |
606 |
/* need three here due to argument count limits */
|
607 |
trace_usb_ehci_qh_ptrs(q, addr, qh->next, |
608 |
qh->current_qtd, qh->next_qtd, qh->altnext_qtd); |
609 |
trace_usb_ehci_qh_fields(addr, |
610 |
get_field(qh->epchar, QH_EPCHAR_RL), |
611 |
get_field(qh->epchar, QH_EPCHAR_MPLEN), |
612 |
get_field(qh->epchar, QH_EPCHAR_EPS), |
613 |
get_field(qh->epchar, QH_EPCHAR_EP), |
614 |
get_field(qh->epchar, QH_EPCHAR_DEVADDR)); |
615 |
trace_usb_ehci_qh_bits(addr, |
616 |
(bool)(qh->epchar & QH_EPCHAR_C),
|
617 |
(bool)(qh->epchar & QH_EPCHAR_H),
|
618 |
(bool)(qh->epchar & QH_EPCHAR_DTC),
|
619 |
(bool)(qh->epchar & QH_EPCHAR_I));
|
620 |
} |
621 |
|
622 |
static void ehci_trace_qtd(EHCIQueue *q, target_phys_addr_t addr, EHCIqtd *qtd) |
623 |
{ |
624 |
/* need three here due to argument count limits */
|
625 |
trace_usb_ehci_qtd_ptrs(q, addr, qtd->next, qtd->altnext); |
626 |
trace_usb_ehci_qtd_fields(addr, |
627 |
get_field(qtd->token, QTD_TOKEN_TBYTES), |
628 |
get_field(qtd->token, QTD_TOKEN_CPAGE), |
629 |
get_field(qtd->token, QTD_TOKEN_CERR), |
630 |
get_field(qtd->token, QTD_TOKEN_PID)); |
631 |
trace_usb_ehci_qtd_bits(addr, |
632 |
(bool)(qtd->token & QTD_TOKEN_IOC),
|
633 |
(bool)(qtd->token & QTD_TOKEN_ACTIVE),
|
634 |
(bool)(qtd->token & QTD_TOKEN_HALT),
|
635 |
(bool)(qtd->token & QTD_TOKEN_BABBLE),
|
636 |
(bool)(qtd->token & QTD_TOKEN_XACTERR));
|
637 |
} |
638 |
|
639 |
static void ehci_trace_itd(EHCIState *s, target_phys_addr_t addr, EHCIitd *itd) |
640 |
{ |
641 |
trace_usb_ehci_itd(addr, itd->next, |
642 |
get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT),
|
643 |
get_field(itd->bufptr[2], ITD_BUFPTR_MULT),
|
644 |
get_field(itd->bufptr[0], ITD_BUFPTR_EP),
|
645 |
get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR));
|
646 |
} |
647 |
|
648 |
/* queue management */
|
649 |
|
650 |
static EHCIQueue *ehci_alloc_queue(EHCIState *ehci, int async) |
651 |
{ |
652 |
EHCIQueue *q; |
653 |
|
654 |
q = qemu_mallocz(sizeof(*q));
|
655 |
q->ehci = ehci; |
656 |
q->async_schedule = async; |
657 |
QTAILQ_INSERT_HEAD(&ehci->queues, q, next); |
658 |
trace_usb_ehci_queue_action(q, "alloc");
|
659 |
return q;
|
660 |
} |
661 |
|
662 |
static void ehci_free_queue(EHCIQueue *q) |
663 |
{ |
664 |
trace_usb_ehci_queue_action(q, "free");
|
665 |
if (q->async == EHCI_ASYNC_INFLIGHT) {
|
666 |
usb_cancel_packet(&q->packet); |
667 |
} |
668 |
QTAILQ_REMOVE(&q->ehci->queues, q, next); |
669 |
qemu_free(q); |
670 |
} |
671 |
|
672 |
static EHCIQueue *ehci_find_queue_by_qh(EHCIState *ehci, uint32_t addr)
|
673 |
{ |
674 |
EHCIQueue *q; |
675 |
|
676 |
QTAILQ_FOREACH(q, &ehci->queues, next) { |
677 |
if (addr == q->qhaddr) {
|
678 |
return q;
|
679 |
} |
680 |
} |
681 |
return NULL; |
682 |
} |
683 |
|
684 |
static void ehci_queues_rip_unused(EHCIState *ehci) |
685 |
{ |
686 |
EHCIQueue *q, *tmp; |
687 |
|
688 |
QTAILQ_FOREACH_SAFE(q, &ehci->queues, next, tmp) { |
689 |
if (q->seen) {
|
690 |
q->seen = 0;
|
691 |
q->ts = ehci->last_run_ns; |
692 |
continue;
|
693 |
} |
694 |
if (ehci->last_run_ns < q->ts + 250000000) { |
695 |
/* allow 0.25 sec idle */
|
696 |
continue;
|
697 |
} |
698 |
ehci_free_queue(q); |
699 |
} |
700 |
} |
701 |
|
702 |
static void ehci_queues_rip_device(EHCIState *ehci, USBDevice *dev) |
703 |
{ |
704 |
EHCIQueue *q, *tmp; |
705 |
|
706 |
QTAILQ_FOREACH_SAFE(q, &ehci->queues, next, tmp) { |
707 |
if (q->packet.owner != dev) {
|
708 |
continue;
|
709 |
} |
710 |
ehci_free_queue(q); |
711 |
} |
712 |
} |
713 |
|
714 |
static void ehci_queues_rip_all(EHCIState *ehci) |
715 |
{ |
716 |
EHCIQueue *q, *tmp; |
717 |
|
718 |
QTAILQ_FOREACH_SAFE(q, &ehci->queues, next, tmp) { |
719 |
ehci_free_queue(q); |
720 |
} |
721 |
} |
722 |
|
723 |
/* Attach or detach a device on root hub */
|
724 |
|
725 |
static void ehci_attach(USBPort *port) |
726 |
{ |
727 |
EHCIState *s = port->opaque; |
728 |
uint32_t *portsc = &s->portsc[port->index]; |
729 |
|
730 |
trace_usb_ehci_port_attach(port->index, port->dev->product_desc); |
731 |
|
732 |
if (*portsc & PORTSC_POWNER) {
|
733 |
USBPort *companion = s->companion_ports[port->index]; |
734 |
companion->dev = port->dev; |
735 |
companion->ops->attach(companion); |
736 |
return;
|
737 |
} |
738 |
|
739 |
*portsc |= PORTSC_CONNECT; |
740 |
*portsc |= PORTSC_CSC; |
741 |
|
742 |
ehci_set_interrupt(s, USBSTS_PCD); |
743 |
} |
744 |
|
745 |
static void ehci_detach(USBPort *port) |
746 |
{ |
747 |
EHCIState *s = port->opaque; |
748 |
uint32_t *portsc = &s->portsc[port->index]; |
749 |
|
750 |
trace_usb_ehci_port_detach(port->index); |
751 |
|
752 |
if (*portsc & PORTSC_POWNER) {
|
753 |
USBPort *companion = s->companion_ports[port->index]; |
754 |
companion->ops->detach(companion); |
755 |
companion->dev = NULL;
|
756 |
return;
|
757 |
} |
758 |
|
759 |
ehci_queues_rip_device(s, port->dev); |
760 |
|
761 |
*portsc &= ~(PORTSC_CONNECT|PORTSC_PED); |
762 |
*portsc |= PORTSC_CSC; |
763 |
|
764 |
ehci_set_interrupt(s, USBSTS_PCD); |
765 |
} |
766 |
|
767 |
static void ehci_child_detach(USBPort *port, USBDevice *child) |
768 |
{ |
769 |
EHCIState *s = port->opaque; |
770 |
uint32_t portsc = s->portsc[port->index]; |
771 |
|
772 |
if (portsc & PORTSC_POWNER) {
|
773 |
USBPort *companion = s->companion_ports[port->index]; |
774 |
companion->ops->child_detach(companion, child); |
775 |
companion->dev = NULL;
|
776 |
return;
|
777 |
} |
778 |
|
779 |
ehci_queues_rip_device(s, child); |
780 |
} |
781 |
|
782 |
static void ehci_wakeup(USBPort *port) |
783 |
{ |
784 |
EHCIState *s = port->opaque; |
785 |
uint32_t portsc = s->portsc[port->index]; |
786 |
|
787 |
if (portsc & PORTSC_POWNER) {
|
788 |
USBPort *companion = s->companion_ports[port->index]; |
789 |
if (companion->ops->wakeup) {
|
790 |
companion->ops->wakeup(companion); |
791 |
} |
792 |
} |
793 |
} |
794 |
|
795 |
static int ehci_register_companion(USBBus *bus, USBPort *ports[], |
796 |
uint32_t portcount, uint32_t firstport) |
797 |
{ |
798 |
EHCIState *s = container_of(bus, EHCIState, bus); |
799 |
uint32_t i; |
800 |
|
801 |
if (firstport + portcount > NB_PORTS) {
|
802 |
qerror_report(QERR_INVALID_PARAMETER_VALUE, "firstport",
|
803 |
"firstport on masterbus");
|
804 |
error_printf_unless_qmp( |
805 |
"firstport value of %u makes companion take ports %u - %u, which "
|
806 |
"is outside of the valid range of 0 - %u\n", firstport, firstport,
|
807 |
firstport + portcount - 1, NB_PORTS - 1); |
808 |
return -1; |
809 |
} |
810 |
|
811 |
for (i = 0; i < portcount; i++) { |
812 |
if (s->companion_ports[firstport + i]) {
|
813 |
qerror_report(QERR_INVALID_PARAMETER_VALUE, "masterbus",
|
814 |
"an USB masterbus");
|
815 |
error_printf_unless_qmp( |
816 |
"port %u on masterbus %s already has a companion assigned\n",
|
817 |
firstport + i, bus->qbus.name); |
818 |
return -1; |
819 |
} |
820 |
} |
821 |
|
822 |
for (i = 0; i < portcount; i++) { |
823 |
s->companion_ports[firstport + i] = ports[i]; |
824 |
s->ports[firstport + i].speedmask |= |
825 |
USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL; |
826 |
/* Ensure devs attached before the initial reset go to the companion */
|
827 |
s->portsc[firstport + i] = PORTSC_POWNER; |
828 |
} |
829 |
|
830 |
s->companion_count++; |
831 |
s->mmio[0x05] = (s->companion_count << 4) | portcount; |
832 |
|
833 |
return 0; |
834 |
} |
835 |
|
836 |
/* 4.1 host controller initialization */
|
837 |
static void ehci_reset(void *opaque) |
838 |
{ |
839 |
EHCIState *s = opaque; |
840 |
int i;
|
841 |
USBDevice *devs[NB_PORTS]; |
842 |
|
843 |
trace_usb_ehci_reset(); |
844 |
|
845 |
/*
|
846 |
* Do the detach before touching portsc, so that it correctly gets send to
|
847 |
* us or to our companion based on PORTSC_POWNER before the reset.
|
848 |
*/
|
849 |
for(i = 0; i < NB_PORTS; i++) { |
850 |
devs[i] = s->ports[i].dev; |
851 |
if (devs[i]) {
|
852 |
usb_attach(&s->ports[i], NULL);
|
853 |
} |
854 |
} |
855 |
|
856 |
memset(&s->mmio[OPREGBASE], 0x00, MMIO_SIZE - OPREGBASE);
|
857 |
|
858 |
s->usbcmd = NB_MAXINTRATE << USBCMD_ITC_SH; |
859 |
s->usbsts = USBSTS_HALT; |
860 |
|
861 |
s->astate = EST_INACTIVE; |
862 |
s->pstate = EST_INACTIVE; |
863 |
s->isoch_pause = -1;
|
864 |
s->attach_poll_counter = 0;
|
865 |
|
866 |
for(i = 0; i < NB_PORTS; i++) { |
867 |
if (s->companion_ports[i]) {
|
868 |
s->portsc[i] = PORTSC_POWNER | PORTSC_PPOWER; |
869 |
} else {
|
870 |
s->portsc[i] = PORTSC_PPOWER; |
871 |
} |
872 |
if (devs[i]) {
|
873 |
usb_attach(&s->ports[i], devs[i]); |
874 |
} |
875 |
} |
876 |
ehci_queues_rip_all(s); |
877 |
} |
878 |
|
879 |
static uint32_t ehci_mem_readb(void *ptr, target_phys_addr_t addr) |
880 |
{ |
881 |
EHCIState *s = ptr; |
882 |
uint32_t val; |
883 |
|
884 |
val = s->mmio[addr]; |
885 |
|
886 |
return val;
|
887 |
} |
888 |
|
889 |
static uint32_t ehci_mem_readw(void *ptr, target_phys_addr_t addr) |
890 |
{ |
891 |
EHCIState *s = ptr; |
892 |
uint32_t val; |
893 |
|
894 |
val = s->mmio[addr] | (s->mmio[addr+1] << 8); |
895 |
|
896 |
return val;
|
897 |
} |
898 |
|
899 |
static uint32_t ehci_mem_readl(void *ptr, target_phys_addr_t addr) |
900 |
{ |
901 |
EHCIState *s = ptr; |
902 |
uint32_t val; |
903 |
|
904 |
val = s->mmio[addr] | (s->mmio[addr+1] << 8) | |
905 |
(s->mmio[addr+2] << 16) | (s->mmio[addr+3] << 24); |
906 |
|
907 |
trace_usb_ehci_mmio_readl(addr, addr2str(addr), val); |
908 |
return val;
|
909 |
} |
910 |
|
911 |
static void ehci_mem_writeb(void *ptr, target_phys_addr_t addr, uint32_t val) |
912 |
{ |
913 |
fprintf(stderr, "EHCI doesn't handle byte writes to MMIO\n");
|
914 |
exit(1);
|
915 |
} |
916 |
|
917 |
static void ehci_mem_writew(void *ptr, target_phys_addr_t addr, uint32_t val) |
918 |
{ |
919 |
fprintf(stderr, "EHCI doesn't handle 16-bit writes to MMIO\n");
|
920 |
exit(1);
|
921 |
} |
922 |
|
923 |
static void handle_port_owner_write(EHCIState *s, int port, uint32_t owner) |
924 |
{ |
925 |
USBDevice *dev = s->ports[port].dev; |
926 |
uint32_t *portsc = &s->portsc[port]; |
927 |
uint32_t orig; |
928 |
|
929 |
if (s->companion_ports[port] == NULL) |
930 |
return;
|
931 |
|
932 |
owner = owner & PORTSC_POWNER; |
933 |
orig = *portsc & PORTSC_POWNER; |
934 |
|
935 |
if (!(owner ^ orig)) {
|
936 |
return;
|
937 |
} |
938 |
|
939 |
if (dev) {
|
940 |
usb_attach(&s->ports[port], NULL);
|
941 |
} |
942 |
|
943 |
*portsc &= ~PORTSC_POWNER; |
944 |
*portsc |= owner; |
945 |
|
946 |
if (dev) {
|
947 |
usb_attach(&s->ports[port], dev); |
948 |
} |
949 |
} |
950 |
|
951 |
static void handle_port_status_write(EHCIState *s, int port, uint32_t val) |
952 |
{ |
953 |
uint32_t *portsc = &s->portsc[port]; |
954 |
USBDevice *dev = s->ports[port].dev; |
955 |
|
956 |
/* Clear rwc bits */
|
957 |
*portsc &= ~(val & PORTSC_RWC_MASK); |
958 |
/* The guest may clear, but not set the PED bit */
|
959 |
*portsc &= val | ~PORTSC_PED; |
960 |
/* POWNER is masked out by RO_MASK as it is RO when we've no companion */
|
961 |
handle_port_owner_write(s, port, val); |
962 |
/* And finally apply RO_MASK */
|
963 |
val &= PORTSC_RO_MASK; |
964 |
|
965 |
if ((val & PORTSC_PRESET) && !(*portsc & PORTSC_PRESET)) {
|
966 |
trace_usb_ehci_port_reset(port, 1);
|
967 |
} |
968 |
|
969 |
if (!(val & PORTSC_PRESET) &&(*portsc & PORTSC_PRESET)) {
|
970 |
trace_usb_ehci_port_reset(port, 0);
|
971 |
if (dev) {
|
972 |
usb_attach(&s->ports[port], dev); |
973 |
usb_send_msg(dev, USB_MSG_RESET); |
974 |
*portsc &= ~PORTSC_CSC; |
975 |
} |
976 |
|
977 |
/*
|
978 |
* Table 2.16 Set the enable bit(and enable bit change) to indicate
|
979 |
* to SW that this port has a high speed device attached
|
980 |
*/
|
981 |
if (dev && (dev->speedmask & USB_SPEED_MASK_HIGH)) {
|
982 |
val |= PORTSC_PED; |
983 |
} |
984 |
} |
985 |
|
986 |
*portsc &= ~PORTSC_RO_MASK; |
987 |
*portsc |= val; |
988 |
} |
989 |
|
990 |
static void ehci_mem_writel(void *ptr, target_phys_addr_t addr, uint32_t val) |
991 |
{ |
992 |
EHCIState *s = ptr; |
993 |
uint32_t *mmio = (uint32_t *)(&s->mmio[addr]); |
994 |
uint32_t old = *mmio; |
995 |
int i;
|
996 |
|
997 |
trace_usb_ehci_mmio_writel(addr, addr2str(addr), val); |
998 |
|
999 |
/* Only aligned reads are allowed on OHCI */
|
1000 |
if (addr & 3) { |
1001 |
fprintf(stderr, "usb-ehci: Mis-aligned write to addr 0x"
|
1002 |
TARGET_FMT_plx "\n", addr);
|
1003 |
return;
|
1004 |
} |
1005 |
|
1006 |
if (addr >= PORTSC && addr < PORTSC + 4 * NB_PORTS) { |
1007 |
handle_port_status_write(s, (addr-PORTSC)/4, val);
|
1008 |
trace_usb_ehci_mmio_change(addr, addr2str(addr), *mmio, old); |
1009 |
return;
|
1010 |
} |
1011 |
|
1012 |
if (addr < OPREGBASE) {
|
1013 |
fprintf(stderr, "usb-ehci: write attempt to read-only register"
|
1014 |
TARGET_FMT_plx "\n", addr);
|
1015 |
return;
|
1016 |
} |
1017 |
|
1018 |
|
1019 |
/* Do any register specific pre-write processing here. */
|
1020 |
switch(addr) {
|
1021 |
case USBCMD:
|
1022 |
if ((val & USBCMD_RUNSTOP) && !(s->usbcmd & USBCMD_RUNSTOP)) {
|
1023 |
qemu_mod_timer(s->frame_timer, qemu_get_clock_ns(vm_clock)); |
1024 |
SET_LAST_RUN_CLOCK(s); |
1025 |
ehci_clear_usbsts(s, USBSTS_HALT); |
1026 |
} |
1027 |
|
1028 |
if (!(val & USBCMD_RUNSTOP) && (s->usbcmd & USBCMD_RUNSTOP)) {
|
1029 |
qemu_del_timer(s->frame_timer); |
1030 |
// TODO - should finish out some stuff before setting halt
|
1031 |
ehci_set_usbsts(s, USBSTS_HALT); |
1032 |
} |
1033 |
|
1034 |
if (val & USBCMD_HCRESET) {
|
1035 |
ehci_reset(s); |
1036 |
val &= ~USBCMD_HCRESET; |
1037 |
} |
1038 |
|
1039 |
/* not supporting dynamic frame list size at the moment */
|
1040 |
if ((val & USBCMD_FLS) && !(s->usbcmd & USBCMD_FLS)) {
|
1041 |
fprintf(stderr, "attempt to set frame list size -- value %d\n",
|
1042 |
val & USBCMD_FLS); |
1043 |
val &= ~USBCMD_FLS; |
1044 |
} |
1045 |
break;
|
1046 |
|
1047 |
case USBSTS:
|
1048 |
val &= USBSTS_RO_MASK; // bits 6 thru 31 are RO
|
1049 |
ehci_clear_usbsts(s, val); // bits 0 thru 5 are R/WC
|
1050 |
val = s->usbsts; |
1051 |
ehci_set_interrupt(s, 0);
|
1052 |
break;
|
1053 |
|
1054 |
case USBINTR:
|
1055 |
val &= USBINTR_MASK; |
1056 |
break;
|
1057 |
|
1058 |
case FRINDEX:
|
1059 |
s->sofv = val >> 3;
|
1060 |
break;
|
1061 |
|
1062 |
case CONFIGFLAG:
|
1063 |
val &= 0x1;
|
1064 |
if (val) {
|
1065 |
for(i = 0; i < NB_PORTS; i++) |
1066 |
handle_port_owner_write(s, i, 0);
|
1067 |
} |
1068 |
break;
|
1069 |
|
1070 |
case PERIODICLISTBASE:
|
1071 |
if ((s->usbcmd & USBCMD_PSE) && (s->usbcmd & USBCMD_RUNSTOP)) {
|
1072 |
fprintf(stderr, |
1073 |
"ehci: PERIODIC list base register set while periodic schedule\n"
|
1074 |
" is enabled and HC is enabled\n");
|
1075 |
} |
1076 |
break;
|
1077 |
|
1078 |
case ASYNCLISTADDR:
|
1079 |
if ((s->usbcmd & USBCMD_ASE) && (s->usbcmd & USBCMD_RUNSTOP)) {
|
1080 |
fprintf(stderr, |
1081 |
"ehci: ASYNC list address register set while async schedule\n"
|
1082 |
" is enabled and HC is enabled\n");
|
1083 |
} |
1084 |
break;
|
1085 |
} |
1086 |
|
1087 |
*mmio = val; |
1088 |
trace_usb_ehci_mmio_change(addr, addr2str(addr), *mmio, old); |
1089 |
} |
1090 |
|
1091 |
|
1092 |
// TODO : Put in common header file, duplication from usb-ohci.c
|
1093 |
|
1094 |
/* Get an array of dwords from main memory */
|
1095 |
static inline int get_dwords(uint32_t addr, uint32_t *buf, int num) |
1096 |
{ |
1097 |
int i;
|
1098 |
|
1099 |
for(i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { |
1100 |
cpu_physical_memory_rw(addr,(uint8_t *)buf, sizeof(*buf), 0); |
1101 |
*buf = le32_to_cpu(*buf); |
1102 |
} |
1103 |
|
1104 |
return 1; |
1105 |
} |
1106 |
|
1107 |
/* Put an array of dwords in to main memory */
|
1108 |
static inline int put_dwords(uint32_t addr, uint32_t *buf, int num) |
1109 |
{ |
1110 |
int i;
|
1111 |
|
1112 |
for(i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { |
1113 |
uint32_t tmp = cpu_to_le32(*buf); |
1114 |
cpu_physical_memory_rw(addr,(uint8_t *)&tmp, sizeof(tmp), 1); |
1115 |
} |
1116 |
|
1117 |
return 1; |
1118 |
} |
1119 |
|
1120 |
// 4.10.2
|
1121 |
|
1122 |
static int ehci_qh_do_overlay(EHCIQueue *q) |
1123 |
{ |
1124 |
int i;
|
1125 |
int dtoggle;
|
1126 |
int ping;
|
1127 |
int eps;
|
1128 |
int reload;
|
1129 |
|
1130 |
// remember values in fields to preserve in qh after overlay
|
1131 |
|
1132 |
dtoggle = q->qh.token & QTD_TOKEN_DTOGGLE; |
1133 |
ping = q->qh.token & QTD_TOKEN_PING; |
1134 |
|
1135 |
q->qh.current_qtd = q->qtdaddr; |
1136 |
q->qh.next_qtd = q->qtd.next; |
1137 |
q->qh.altnext_qtd = q->qtd.altnext; |
1138 |
q->qh.token = q->qtd.token; |
1139 |
|
1140 |
|
1141 |
eps = get_field(q->qh.epchar, QH_EPCHAR_EPS); |
1142 |
if (eps == EHCI_QH_EPS_HIGH) {
|
1143 |
q->qh.token &= ~QTD_TOKEN_PING; |
1144 |
q->qh.token |= ping; |
1145 |
} |
1146 |
|
1147 |
reload = get_field(q->qh.epchar, QH_EPCHAR_RL); |
1148 |
set_field(&q->qh.altnext_qtd, reload, QH_ALTNEXT_NAKCNT); |
1149 |
|
1150 |
for (i = 0; i < 5; i++) { |
1151 |
q->qh.bufptr[i] = q->qtd.bufptr[i]; |
1152 |
} |
1153 |
|
1154 |
if (!(q->qh.epchar & QH_EPCHAR_DTC)) {
|
1155 |
// preserve QH DT bit
|
1156 |
q->qh.token &= ~QTD_TOKEN_DTOGGLE; |
1157 |
q->qh.token |= dtoggle; |
1158 |
} |
1159 |
|
1160 |
q->qh.bufptr[1] &= ~BUFPTR_CPROGMASK_MASK;
|
1161 |
q->qh.bufptr[2] &= ~BUFPTR_FRAMETAG_MASK;
|
1162 |
|
1163 |
put_dwords(NLPTR_GET(q->qhaddr), (uint32_t *) &q->qh, sizeof(EHCIqh) >> 2); |
1164 |
|
1165 |
return 0; |
1166 |
} |
1167 |
|
1168 |
static int ehci_buffer_rw(EHCIQueue *q, int bytes, int rw) |
1169 |
{ |
1170 |
int bufpos = 0; |
1171 |
int cpage, offset;
|
1172 |
uint32_t head; |
1173 |
uint32_t tail; |
1174 |
|
1175 |
|
1176 |
if (!bytes) {
|
1177 |
return 0; |
1178 |
} |
1179 |
|
1180 |
cpage = get_field(q->qh.token, QTD_TOKEN_CPAGE); |
1181 |
if (cpage > 4) { |
1182 |
fprintf(stderr, "cpage out of range (%d)\n", cpage);
|
1183 |
return USB_RET_PROCERR;
|
1184 |
} |
1185 |
|
1186 |
offset = q->qh.bufptr[0] & ~QTD_BUFPTR_MASK;
|
1187 |
|
1188 |
do {
|
1189 |
/* start and end of this page */
|
1190 |
head = q->qh.bufptr[cpage] & QTD_BUFPTR_MASK; |
1191 |
tail = head + ~QTD_BUFPTR_MASK + 1;
|
1192 |
/* add offset into page */
|
1193 |
head |= offset; |
1194 |
|
1195 |
if (bytes <= (tail - head)) {
|
1196 |
tail = head + bytes; |
1197 |
} |
1198 |
|
1199 |
trace_usb_ehci_data(rw, cpage, offset, head, tail-head, bufpos); |
1200 |
cpu_physical_memory_rw(head, q->buffer + bufpos, tail - head, rw); |
1201 |
|
1202 |
bufpos += (tail - head); |
1203 |
offset += (tail - head); |
1204 |
bytes -= (tail - head); |
1205 |
|
1206 |
if (bytes > 0) { |
1207 |
cpage++; |
1208 |
offset = 0;
|
1209 |
} |
1210 |
} while (bytes > 0); |
1211 |
|
1212 |
/* save cpage */
|
1213 |
set_field(&q->qh.token, cpage, QTD_TOKEN_CPAGE); |
1214 |
|
1215 |
/* save offset into cpage */
|
1216 |
q->qh.bufptr[0] &= QTD_BUFPTR_MASK;
|
1217 |
q->qh.bufptr[0] |= offset;
|
1218 |
|
1219 |
return 0; |
1220 |
} |
1221 |
|
1222 |
static void ehci_async_complete_packet(USBPort *port, USBPacket *packet) |
1223 |
{ |
1224 |
EHCIQueue *q; |
1225 |
EHCIState *s = port->opaque; |
1226 |
uint32_t portsc = s->portsc[port->index]; |
1227 |
|
1228 |
if (portsc & PORTSC_POWNER) {
|
1229 |
USBPort *companion = s->companion_ports[port->index]; |
1230 |
companion->ops->complete(companion, packet); |
1231 |
return;
|
1232 |
} |
1233 |
|
1234 |
q = container_of(packet, EHCIQueue, packet); |
1235 |
trace_usb_ehci_queue_action(q, "wakeup");
|
1236 |
assert(q->async == EHCI_ASYNC_INFLIGHT); |
1237 |
q->async = EHCI_ASYNC_FINISHED; |
1238 |
q->usb_status = packet->len; |
1239 |
} |
1240 |
|
1241 |
static void ehci_execute_complete(EHCIQueue *q) |
1242 |
{ |
1243 |
int c_err, reload;
|
1244 |
|
1245 |
assert(q->async != EHCI_ASYNC_INFLIGHT); |
1246 |
q->async = EHCI_ASYNC_NONE; |
1247 |
|
1248 |
DPRINTF("execute_complete: qhaddr 0x%x, next %x, qtdaddr 0x%x, status %d\n",
|
1249 |
q->qhaddr, q->qh.next, q->qtdaddr, q->usb_status); |
1250 |
|
1251 |
if (q->usb_status < 0) { |
1252 |
err:
|
1253 |
/* TO-DO: put this is in a function that can be invoked below as well */
|
1254 |
c_err = get_field(q->qh.token, QTD_TOKEN_CERR); |
1255 |
c_err--; |
1256 |
set_field(&q->qh.token, c_err, QTD_TOKEN_CERR); |
1257 |
|
1258 |
switch(q->usb_status) {
|
1259 |
case USB_RET_NODEV:
|
1260 |
q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_XACTERR); |
1261 |
ehci_record_interrupt(q->ehci, USBSTS_ERRINT); |
1262 |
break;
|
1263 |
case USB_RET_STALL:
|
1264 |
q->qh.token |= QTD_TOKEN_HALT; |
1265 |
ehci_record_interrupt(q->ehci, USBSTS_ERRINT); |
1266 |
break;
|
1267 |
case USB_RET_NAK:
|
1268 |
/* 4.10.3 */
|
1269 |
reload = get_field(q->qh.epchar, QH_EPCHAR_RL); |
1270 |
if ((q->pid == USB_TOKEN_IN) && reload) {
|
1271 |
int nakcnt = get_field(q->qh.altnext_qtd, QH_ALTNEXT_NAKCNT);
|
1272 |
nakcnt--; |
1273 |
set_field(&q->qh.altnext_qtd, nakcnt, QH_ALTNEXT_NAKCNT); |
1274 |
} else if (!reload) { |
1275 |
return;
|
1276 |
} |
1277 |
break;
|
1278 |
case USB_RET_BABBLE:
|
1279 |
q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_BABBLE); |
1280 |
ehci_record_interrupt(q->ehci, USBSTS_ERRINT); |
1281 |
break;
|
1282 |
default:
|
1283 |
/* should not be triggerable */
|
1284 |
fprintf(stderr, "USB invalid response %d to handle\n", q->usb_status);
|
1285 |
assert(0);
|
1286 |
break;
|
1287 |
} |
1288 |
} else {
|
1289 |
// DPRINTF("Short packet condition\n");
|
1290 |
// TODO check 4.12 for splits
|
1291 |
|
1292 |
if ((q->usb_status > q->tbytes) && (q->pid == USB_TOKEN_IN)) {
|
1293 |
q->usb_status = USB_RET_BABBLE; |
1294 |
goto err;
|
1295 |
} |
1296 |
|
1297 |
if (q->tbytes && q->pid == USB_TOKEN_IN) {
|
1298 |
if (ehci_buffer_rw(q, q->usb_status, 1) != 0) { |
1299 |
q->usb_status = USB_RET_PROCERR; |
1300 |
return;
|
1301 |
} |
1302 |
q->tbytes -= q->usb_status; |
1303 |
} else {
|
1304 |
q->tbytes = 0;
|
1305 |
} |
1306 |
|
1307 |
DPRINTF("updating tbytes to %d\n", q->tbytes);
|
1308 |
set_field(&q->qh.token, q->tbytes, QTD_TOKEN_TBYTES); |
1309 |
} |
1310 |
|
1311 |
q->qh.token ^= QTD_TOKEN_DTOGGLE; |
1312 |
q->qh.token &= ~QTD_TOKEN_ACTIVE; |
1313 |
|
1314 |
if ((q->usb_status >= 0) && (q->qh.token & QTD_TOKEN_IOC)) { |
1315 |
ehci_record_interrupt(q->ehci, USBSTS_INT); |
1316 |
} |
1317 |
} |
1318 |
|
1319 |
// 4.10.3
|
1320 |
|
1321 |
static int ehci_execute(EHCIQueue *q) |
1322 |
{ |
1323 |
USBPort *port; |
1324 |
USBDevice *dev; |
1325 |
int ret;
|
1326 |
int i;
|
1327 |
int endp;
|
1328 |
int devadr;
|
1329 |
|
1330 |
if ( !(q->qh.token & QTD_TOKEN_ACTIVE)) {
|
1331 |
fprintf(stderr, "Attempting to execute inactive QH\n");
|
1332 |
return USB_RET_PROCERR;
|
1333 |
} |
1334 |
|
1335 |
q->tbytes = (q->qh.token & QTD_TOKEN_TBYTES_MASK) >> QTD_TOKEN_TBYTES_SH; |
1336 |
if (q->tbytes > BUFF_SIZE) {
|
1337 |
fprintf(stderr, "Request for more bytes than allowed\n");
|
1338 |
return USB_RET_PROCERR;
|
1339 |
} |
1340 |
|
1341 |
q->pid = (q->qh.token & QTD_TOKEN_PID_MASK) >> QTD_TOKEN_PID_SH; |
1342 |
switch(q->pid) {
|
1343 |
case 0: q->pid = USB_TOKEN_OUT; break; |
1344 |
case 1: q->pid = USB_TOKEN_IN; break; |
1345 |
case 2: q->pid = USB_TOKEN_SETUP; break; |
1346 |
default: fprintf(stderr, "bad token\n"); break; |
1347 |
} |
1348 |
|
1349 |
if ((q->tbytes && q->pid != USB_TOKEN_IN) &&
|
1350 |
(ehci_buffer_rw(q, q->tbytes, 0) != 0)) { |
1351 |
return USB_RET_PROCERR;
|
1352 |
} |
1353 |
|
1354 |
endp = get_field(q->qh.epchar, QH_EPCHAR_EP); |
1355 |
devadr = get_field(q->qh.epchar, QH_EPCHAR_DEVADDR); |
1356 |
|
1357 |
ret = USB_RET_NODEV; |
1358 |
|
1359 |
// TO-DO: associating device with ehci port
|
1360 |
for(i = 0; i < NB_PORTS; i++) { |
1361 |
port = &q->ehci->ports[i]; |
1362 |
dev = port->dev; |
1363 |
|
1364 |
if (!(q->ehci->portsc[i] &(PORTSC_CONNECT))) {
|
1365 |
DPRINTF("Port %d, no exec, not connected(%08X)\n",
|
1366 |
i, q->ehci->portsc[i]); |
1367 |
continue;
|
1368 |
} |
1369 |
|
1370 |
q->packet.pid = q->pid; |
1371 |
q->packet.devaddr = devadr; |
1372 |
q->packet.devep = endp; |
1373 |
q->packet.data = q->buffer; |
1374 |
q->packet.len = q->tbytes; |
1375 |
|
1376 |
ret = usb_handle_packet(dev, &q->packet); |
1377 |
|
1378 |
DPRINTF("submit: qh %x next %x qtd %x pid %x len %d (total %d) endp %x ret %d\n",
|
1379 |
q->qhaddr, q->qh.next, q->qtdaddr, q->pid, |
1380 |
q->packet.len, q->tbytes, endp, ret); |
1381 |
|
1382 |
if (ret != USB_RET_NODEV) {
|
1383 |
break;
|
1384 |
} |
1385 |
} |
1386 |
|
1387 |
if (ret > BUFF_SIZE) {
|
1388 |
fprintf(stderr, "ret from usb_handle_packet > BUFF_SIZE\n");
|
1389 |
return USB_RET_PROCERR;
|
1390 |
} |
1391 |
|
1392 |
return ret;
|
1393 |
} |
1394 |
|
1395 |
/* 4.7.2
|
1396 |
*/
|
1397 |
|
1398 |
static int ehci_process_itd(EHCIState *ehci, |
1399 |
EHCIitd *itd) |
1400 |
{ |
1401 |
USBPort *port; |
1402 |
USBDevice *dev; |
1403 |
int ret;
|
1404 |
uint32_t i, j, len, len1, len2, pid, dir, devaddr, endp; |
1405 |
uint32_t pg, off, ptr1, ptr2, max, mult; |
1406 |
|
1407 |
dir =(itd->bufptr[1] & ITD_BUFPTR_DIRECTION);
|
1408 |
devaddr = get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR);
|
1409 |
endp = get_field(itd->bufptr[0], ITD_BUFPTR_EP);
|
1410 |
max = get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT);
|
1411 |
mult = get_field(itd->bufptr[2], ITD_BUFPTR_MULT);
|
1412 |
|
1413 |
for(i = 0; i < 8; i++) { |
1414 |
if (itd->transact[i] & ITD_XACT_ACTIVE) {
|
1415 |
pg = get_field(itd->transact[i], ITD_XACT_PGSEL); |
1416 |
off = itd->transact[i] & ITD_XACT_OFFSET_MASK; |
1417 |
ptr1 = (itd->bufptr[pg] & ITD_BUFPTR_MASK); |
1418 |
ptr2 = (itd->bufptr[pg+1] & ITD_BUFPTR_MASK);
|
1419 |
len = get_field(itd->transact[i], ITD_XACT_LENGTH); |
1420 |
|
1421 |
if (len > max * mult) {
|
1422 |
len = max * mult; |
1423 |
} |
1424 |
|
1425 |
if (len > BUFF_SIZE) {
|
1426 |
return USB_RET_PROCERR;
|
1427 |
} |
1428 |
|
1429 |
if (off + len > 4096) { |
1430 |
/* transfer crosses page border */
|
1431 |
len2 = off + len - 4096;
|
1432 |
len1 = len - len2; |
1433 |
} else {
|
1434 |
len1 = len; |
1435 |
len2 = 0;
|
1436 |
} |
1437 |
|
1438 |
if (!dir) {
|
1439 |
pid = USB_TOKEN_OUT; |
1440 |
trace_usb_ehci_data(0, pg, off, ptr1 + off, len1, 0); |
1441 |
cpu_physical_memory_rw(ptr1 + off, &ehci->ibuffer[0], len1, 0); |
1442 |
if (len2) {
|
1443 |
trace_usb_ehci_data(0, pg+1, 0, ptr2, len2, len1); |
1444 |
cpu_physical_memory_rw(ptr2, &ehci->ibuffer[len1], len2, 0);
|
1445 |
} |
1446 |
} else {
|
1447 |
pid = USB_TOKEN_IN; |
1448 |
} |
1449 |
|
1450 |
ret = USB_RET_NODEV; |
1451 |
|
1452 |
for (j = 0; j < NB_PORTS; j++) { |
1453 |
port = &ehci->ports[j]; |
1454 |
dev = port->dev; |
1455 |
|
1456 |
if (!(ehci->portsc[j] &(PORTSC_CONNECT))) {
|
1457 |
continue;
|
1458 |
} |
1459 |
|
1460 |
ehci->ipacket.pid = pid; |
1461 |
ehci->ipacket.devaddr = devaddr; |
1462 |
ehci->ipacket.devep = endp; |
1463 |
ehci->ipacket.data = ehci->ibuffer; |
1464 |
ehci->ipacket.len = len; |
1465 |
|
1466 |
ret = usb_handle_packet(dev, &ehci->ipacket); |
1467 |
|
1468 |
if (ret != USB_RET_NODEV) {
|
1469 |
break;
|
1470 |
} |
1471 |
} |
1472 |
|
1473 |
#if 0
|
1474 |
/* In isoch, there is no facility to indicate a NAK so let's
|
1475 |
* instead just complete a zero-byte transaction. Setting
|
1476 |
* DBERR seems too draconian.
|
1477 |
*/
|
1478 |
|
1479 |
if (ret == USB_RET_NAK) {
|
1480 |
if (ehci->isoch_pause > 0) {
|
1481 |
DPRINTF("ISOCH: received a NAK but paused so returning\n");
|
1482 |
ehci->isoch_pause--;
|
1483 |
return 0;
|
1484 |
} else if (ehci->isoch_pause == -1) {
|
1485 |
DPRINTF("ISOCH: recv NAK & isoch pause inactive, setting\n");
|
1486 |
// Pause frindex for up to 50 msec waiting for data from
|
1487 |
// remote
|
1488 |
ehci->isoch_pause = 50;
|
1489 |
return 0;
|
1490 |
} else {
|
1491 |
DPRINTF("ISOCH: isoch pause timeout! return 0\n");
|
1492 |
ret = 0;
|
1493 |
}
|
1494 |
} else {
|
1495 |
DPRINTF("ISOCH: received ACK, clearing pause\n");
|
1496 |
ehci->isoch_pause = -1;
|
1497 |
}
|
1498 |
#else
|
1499 |
if (ret == USB_RET_NAK) {
|
1500 |
ret = 0;
|
1501 |
} |
1502 |
#endif
|
1503 |
|
1504 |
if (ret >= 0) { |
1505 |
if (!dir) {
|
1506 |
/* OUT */
|
1507 |
set_field(&itd->transact[i], len - ret, ITD_XACT_LENGTH); |
1508 |
} else {
|
1509 |
/* IN */
|
1510 |
if (len1 > ret) {
|
1511 |
len1 = ret; |
1512 |
} |
1513 |
if (len2 > ret - len1) {
|
1514 |
len2 = ret - len1; |
1515 |
} |
1516 |
if (len1) {
|
1517 |
trace_usb_ehci_data(1, pg, off, ptr1 + off, len1, 0); |
1518 |
cpu_physical_memory_rw(ptr1 + off, &ehci->ibuffer[0], len1, 1); |
1519 |
} |
1520 |
if (len2) {
|
1521 |
trace_usb_ehci_data(1, pg+1, 0, ptr2, len2, len1); |
1522 |
cpu_physical_memory_rw(ptr2, &ehci->ibuffer[len1], len2, 1);
|
1523 |
} |
1524 |
set_field(&itd->transact[i], ret, ITD_XACT_LENGTH); |
1525 |
} |
1526 |
|
1527 |
if (itd->transact[i] & ITD_XACT_IOC) {
|
1528 |
ehci_record_interrupt(ehci, USBSTS_INT); |
1529 |
} |
1530 |
} |
1531 |
itd->transact[i] &= ~ITD_XACT_ACTIVE; |
1532 |
} |
1533 |
} |
1534 |
return 0; |
1535 |
} |
1536 |
|
1537 |
/* This state is the entry point for asynchronous schedule
|
1538 |
* processing. Entry here consitutes a EHCI start event state (4.8.5)
|
1539 |
*/
|
1540 |
static int ehci_state_waitlisthead(EHCIState *ehci, int async) |
1541 |
{ |
1542 |
EHCIqh qh; |
1543 |
int i = 0; |
1544 |
int again = 0; |
1545 |
uint32_t entry = ehci->asynclistaddr; |
1546 |
|
1547 |
/* set reclamation flag at start event (4.8.6) */
|
1548 |
if (async) {
|
1549 |
ehci_set_usbsts(ehci, USBSTS_REC); |
1550 |
} |
1551 |
|
1552 |
ehci_queues_rip_unused(ehci); |
1553 |
|
1554 |
/* Find the head of the list (4.9.1.1) */
|
1555 |
for(i = 0; i < MAX_QH; i++) { |
1556 |
get_dwords(NLPTR_GET(entry), (uint32_t *) &qh, sizeof(EHCIqh) >> 2); |
1557 |
ehci_trace_qh(NULL, NLPTR_GET(entry), &qh);
|
1558 |
|
1559 |
if (qh.epchar & QH_EPCHAR_H) {
|
1560 |
if (async) {
|
1561 |
entry |= (NLPTR_TYPE_QH << 1);
|
1562 |
} |
1563 |
|
1564 |
ehci_set_fetch_addr(ehci, async, entry); |
1565 |
ehci_set_state(ehci, async, EST_FETCHENTRY); |
1566 |
again = 1;
|
1567 |
goto out;
|
1568 |
} |
1569 |
|
1570 |
entry = qh.next; |
1571 |
if (entry == ehci->asynclistaddr) {
|
1572 |
break;
|
1573 |
} |
1574 |
} |
1575 |
|
1576 |
/* no head found for list. */
|
1577 |
|
1578 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1579 |
|
1580 |
out:
|
1581 |
return again;
|
1582 |
} |
1583 |
|
1584 |
|
1585 |
/* This state is the entry point for periodic schedule processing as
|
1586 |
* well as being a continuation state for async processing.
|
1587 |
*/
|
1588 |
static int ehci_state_fetchentry(EHCIState *ehci, int async) |
1589 |
{ |
1590 |
int again = 0; |
1591 |
uint32_t entry = ehci_get_fetch_addr(ehci, async); |
1592 |
|
1593 |
if (entry < 0x1000) { |
1594 |
DPRINTF("fetchentry: entry invalid (0x%08x)\n", entry);
|
1595 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1596 |
goto out;
|
1597 |
} |
1598 |
|
1599 |
/* section 4.8, only QH in async schedule */
|
1600 |
if (async && (NLPTR_TYPE_GET(entry) != NLPTR_TYPE_QH)) {
|
1601 |
fprintf(stderr, "non queue head request in async schedule\n");
|
1602 |
return -1; |
1603 |
} |
1604 |
|
1605 |
switch (NLPTR_TYPE_GET(entry)) {
|
1606 |
case NLPTR_TYPE_QH:
|
1607 |
ehci_set_state(ehci, async, EST_FETCHQH); |
1608 |
again = 1;
|
1609 |
break;
|
1610 |
|
1611 |
case NLPTR_TYPE_ITD:
|
1612 |
ehci_set_state(ehci, async, EST_FETCHITD); |
1613 |
again = 1;
|
1614 |
break;
|
1615 |
|
1616 |
default:
|
1617 |
// TODO: handle siTD and FSTN types
|
1618 |
fprintf(stderr, "FETCHENTRY: entry at %X is of type %d "
|
1619 |
"which is not supported yet\n", entry, NLPTR_TYPE_GET(entry));
|
1620 |
return -1; |
1621 |
} |
1622 |
|
1623 |
out:
|
1624 |
return again;
|
1625 |
} |
1626 |
|
1627 |
static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async) |
1628 |
{ |
1629 |
uint32_t entry; |
1630 |
EHCIQueue *q; |
1631 |
int reload;
|
1632 |
|
1633 |
entry = ehci_get_fetch_addr(ehci, async); |
1634 |
q = ehci_find_queue_by_qh(ehci, entry); |
1635 |
if (NULL == q) { |
1636 |
q = ehci_alloc_queue(ehci, async); |
1637 |
} |
1638 |
q->qhaddr = entry; |
1639 |
q->seen++; |
1640 |
|
1641 |
if (q->seen > 1) { |
1642 |
/* we are going in circles -- stop processing */
|
1643 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1644 |
q = NULL;
|
1645 |
goto out;
|
1646 |
} |
1647 |
|
1648 |
get_dwords(NLPTR_GET(q->qhaddr), (uint32_t *) &q->qh, sizeof(EHCIqh) >> 2); |
1649 |
ehci_trace_qh(q, NLPTR_GET(q->qhaddr), &q->qh); |
1650 |
|
1651 |
if (q->async == EHCI_ASYNC_INFLIGHT) {
|
1652 |
/* I/O still in progress -- skip queue */
|
1653 |
ehci_set_state(ehci, async, EST_HORIZONTALQH); |
1654 |
goto out;
|
1655 |
} |
1656 |
if (q->async == EHCI_ASYNC_FINISHED) {
|
1657 |
/* I/O finished -- continue processing queue */
|
1658 |
trace_usb_ehci_queue_action(q, "resume");
|
1659 |
ehci_set_state(ehci, async, EST_EXECUTING); |
1660 |
goto out;
|
1661 |
} |
1662 |
|
1663 |
if (async && (q->qh.epchar & QH_EPCHAR_H)) {
|
1664 |
|
1665 |
/* EHCI spec version 1.0 Section 4.8.3 & 4.10.1 */
|
1666 |
if (ehci->usbsts & USBSTS_REC) {
|
1667 |
ehci_clear_usbsts(ehci, USBSTS_REC); |
1668 |
} else {
|
1669 |
DPRINTF("FETCHQH: QH 0x%08x. H-bit set, reclamation status reset"
|
1670 |
" - done processing\n", q->qhaddr);
|
1671 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1672 |
q = NULL;
|
1673 |
goto out;
|
1674 |
} |
1675 |
} |
1676 |
|
1677 |
#if EHCI_DEBUG
|
1678 |
if (q->qhaddr != q->qh.next) {
|
1679 |
DPRINTF("FETCHQH: QH 0x%08x (h %x halt %x active %x) next 0x%08x\n",
|
1680 |
q->qhaddr, |
1681 |
q->qh.epchar & QH_EPCHAR_H, |
1682 |
q->qh.token & QTD_TOKEN_HALT, |
1683 |
q->qh.token & QTD_TOKEN_ACTIVE, |
1684 |
q->qh.next); |
1685 |
} |
1686 |
#endif
|
1687 |
|
1688 |
reload = get_field(q->qh.epchar, QH_EPCHAR_RL); |
1689 |
if (reload) {
|
1690 |
set_field(&q->qh.altnext_qtd, reload, QH_ALTNEXT_NAKCNT); |
1691 |
} |
1692 |
|
1693 |
if (q->qh.token & QTD_TOKEN_HALT) {
|
1694 |
ehci_set_state(ehci, async, EST_HORIZONTALQH); |
1695 |
|
1696 |
} else if ((q->qh.token & QTD_TOKEN_ACTIVE) && (q->qh.current_qtd > 0x1000)) { |
1697 |
q->qtdaddr = q->qh.current_qtd; |
1698 |
ehci_set_state(ehci, async, EST_FETCHQTD); |
1699 |
|
1700 |
} else {
|
1701 |
/* EHCI spec version 1.0 Section 4.10.2 */
|
1702 |
ehci_set_state(ehci, async, EST_ADVANCEQUEUE); |
1703 |
} |
1704 |
|
1705 |
out:
|
1706 |
return q;
|
1707 |
} |
1708 |
|
1709 |
static int ehci_state_fetchitd(EHCIState *ehci, int async) |
1710 |
{ |
1711 |
uint32_t entry; |
1712 |
EHCIitd itd; |
1713 |
|
1714 |
assert(!async); |
1715 |
entry = ehci_get_fetch_addr(ehci, async); |
1716 |
|
1717 |
get_dwords(NLPTR_GET(entry),(uint32_t *) &itd, |
1718 |
sizeof(EHCIitd) >> 2); |
1719 |
ehci_trace_itd(ehci, entry, &itd); |
1720 |
|
1721 |
if (ehci_process_itd(ehci, &itd) != 0) { |
1722 |
return -1; |
1723 |
} |
1724 |
|
1725 |
put_dwords(NLPTR_GET(entry), (uint32_t *) &itd, |
1726 |
sizeof(EHCIitd) >> 2); |
1727 |
ehci_set_fetch_addr(ehci, async, itd.next); |
1728 |
ehci_set_state(ehci, async, EST_FETCHENTRY); |
1729 |
|
1730 |
return 1; |
1731 |
} |
1732 |
|
1733 |
/* Section 4.10.2 - paragraph 3 */
|
1734 |
static int ehci_state_advqueue(EHCIQueue *q, int async) |
1735 |
{ |
1736 |
#if 0
|
1737 |
/* TO-DO: 4.10.2 - paragraph 2
|
1738 |
* if I-bit is set to 1 and QH is not active
|
1739 |
* go to horizontal QH
|
1740 |
*/
|
1741 |
if (I-bit set) {
|
1742 |
ehci_set_state(ehci, async, EST_HORIZONTALQH);
|
1743 |
goto out;
|
1744 |
}
|
1745 |
#endif
|
1746 |
|
1747 |
/*
|
1748 |
* want data and alt-next qTD is valid
|
1749 |
*/
|
1750 |
if (((q->qh.token & QTD_TOKEN_TBYTES_MASK) != 0) && |
1751 |
(q->qh.altnext_qtd > 0x1000) &&
|
1752 |
(NLPTR_TBIT(q->qh.altnext_qtd) == 0)) {
|
1753 |
q->qtdaddr = q->qh.altnext_qtd; |
1754 |
ehci_set_state(q->ehci, async, EST_FETCHQTD); |
1755 |
|
1756 |
/*
|
1757 |
* next qTD is valid
|
1758 |
*/
|
1759 |
} else if ((q->qh.next_qtd > 0x1000) && |
1760 |
(NLPTR_TBIT(q->qh.next_qtd) == 0)) {
|
1761 |
q->qtdaddr = q->qh.next_qtd; |
1762 |
ehci_set_state(q->ehci, async, EST_FETCHQTD); |
1763 |
|
1764 |
/*
|
1765 |
* no valid qTD, try next QH
|
1766 |
*/
|
1767 |
} else {
|
1768 |
ehci_set_state(q->ehci, async, EST_HORIZONTALQH); |
1769 |
} |
1770 |
|
1771 |
return 1; |
1772 |
} |
1773 |
|
1774 |
/* Section 4.10.2 - paragraph 4 */
|
1775 |
static int ehci_state_fetchqtd(EHCIQueue *q, int async) |
1776 |
{ |
1777 |
int again = 0; |
1778 |
|
1779 |
get_dwords(NLPTR_GET(q->qtdaddr),(uint32_t *) &q->qtd, sizeof(EHCIqtd) >> 2); |
1780 |
ehci_trace_qtd(q, NLPTR_GET(q->qtdaddr), &q->qtd); |
1781 |
|
1782 |
if (q->qtd.token & QTD_TOKEN_ACTIVE) {
|
1783 |
ehci_set_state(q->ehci, async, EST_EXECUTE); |
1784 |
again = 1;
|
1785 |
} else {
|
1786 |
ehci_set_state(q->ehci, async, EST_HORIZONTALQH); |
1787 |
again = 1;
|
1788 |
} |
1789 |
|
1790 |
return again;
|
1791 |
} |
1792 |
|
1793 |
static int ehci_state_horizqh(EHCIQueue *q, int async) |
1794 |
{ |
1795 |
int again = 0; |
1796 |
|
1797 |
if (ehci_get_fetch_addr(q->ehci, async) != q->qh.next) {
|
1798 |
ehci_set_fetch_addr(q->ehci, async, q->qh.next); |
1799 |
ehci_set_state(q->ehci, async, EST_FETCHENTRY); |
1800 |
again = 1;
|
1801 |
} else {
|
1802 |
ehci_set_state(q->ehci, async, EST_ACTIVE); |
1803 |
} |
1804 |
|
1805 |
return again;
|
1806 |
} |
1807 |
|
1808 |
/*
|
1809 |
* Write the qh back to guest physical memory. This step isn't
|
1810 |
* in the EHCI spec but we need to do it since we don't share
|
1811 |
* physical memory with our guest VM.
|
1812 |
*
|
1813 |
* The first three dwords are read-only for the EHCI, so skip them
|
1814 |
* when writing back the qh.
|
1815 |
*/
|
1816 |
static void ehci_flush_qh(EHCIQueue *q) |
1817 |
{ |
1818 |
uint32_t *qh = (uint32_t *) &q->qh; |
1819 |
uint32_t dwords = sizeof(EHCIqh) >> 2; |
1820 |
uint32_t addr = NLPTR_GET(q->qhaddr); |
1821 |
|
1822 |
put_dwords(addr + 3 * sizeof(uint32_t), qh + 3, dwords - 3); |
1823 |
} |
1824 |
|
1825 |
static int ehci_state_execute(EHCIQueue *q, int async) |
1826 |
{ |
1827 |
int again = 0; |
1828 |
int reload, nakcnt;
|
1829 |
int smask;
|
1830 |
|
1831 |
if (ehci_qh_do_overlay(q) != 0) { |
1832 |
return -1; |
1833 |
} |
1834 |
|
1835 |
smask = get_field(q->qh.epcap, QH_EPCAP_SMASK); |
1836 |
|
1837 |
if (!smask) {
|
1838 |
reload = get_field(q->qh.epchar, QH_EPCHAR_RL); |
1839 |
nakcnt = get_field(q->qh.altnext_qtd, QH_ALTNEXT_NAKCNT); |
1840 |
if (reload && !nakcnt) {
|
1841 |
ehci_set_state(q->ehci, async, EST_HORIZONTALQH); |
1842 |
again = 1;
|
1843 |
goto out;
|
1844 |
} |
1845 |
} |
1846 |
|
1847 |
// TODO verify enough time remains in the uframe as in 4.4.1.1
|
1848 |
// TODO write back ptr to async list when done or out of time
|
1849 |
// TODO Windows does not seem to ever set the MULT field
|
1850 |
|
1851 |
if (!async) {
|
1852 |
int transactCtr = get_field(q->qh.epcap, QH_EPCAP_MULT);
|
1853 |
if (!transactCtr) {
|
1854 |
ehci_set_state(q->ehci, async, EST_HORIZONTALQH); |
1855 |
again = 1;
|
1856 |
goto out;
|
1857 |
} |
1858 |
} |
1859 |
|
1860 |
if (async) {
|
1861 |
ehci_set_usbsts(q->ehci, USBSTS_REC); |
1862 |
} |
1863 |
|
1864 |
q->usb_status = ehci_execute(q); |
1865 |
if (q->usb_status == USB_RET_PROCERR) {
|
1866 |
again = -1;
|
1867 |
goto out;
|
1868 |
} |
1869 |
if (q->usb_status == USB_RET_ASYNC) {
|
1870 |
ehci_flush_qh(q); |
1871 |
trace_usb_ehci_queue_action(q, "suspend");
|
1872 |
q->async = EHCI_ASYNC_INFLIGHT; |
1873 |
ehci_set_state(q->ehci, async, EST_HORIZONTALQH); |
1874 |
again = 1;
|
1875 |
goto out;
|
1876 |
} |
1877 |
|
1878 |
ehci_set_state(q->ehci, async, EST_EXECUTING); |
1879 |
again = 1;
|
1880 |
|
1881 |
out:
|
1882 |
return again;
|
1883 |
} |
1884 |
|
1885 |
static int ehci_state_executing(EHCIQueue *q, int async) |
1886 |
{ |
1887 |
int again = 0; |
1888 |
int reload, nakcnt;
|
1889 |
|
1890 |
ehci_execute_complete(q); |
1891 |
if (q->usb_status == USB_RET_ASYNC) {
|
1892 |
goto out;
|
1893 |
} |
1894 |
if (q->usb_status == USB_RET_PROCERR) {
|
1895 |
again = -1;
|
1896 |
goto out;
|
1897 |
} |
1898 |
|
1899 |
// 4.10.3
|
1900 |
if (!async) {
|
1901 |
int transactCtr = get_field(q->qh.epcap, QH_EPCAP_MULT);
|
1902 |
transactCtr--; |
1903 |
set_field(&q->qh.epcap, transactCtr, QH_EPCAP_MULT); |
1904 |
// 4.10.3, bottom of page 82, should exit this state when transaction
|
1905 |
// counter decrements to 0
|
1906 |
} |
1907 |
|
1908 |
reload = get_field(q->qh.epchar, QH_EPCHAR_RL); |
1909 |
if (reload) {
|
1910 |
nakcnt = get_field(q->qh.altnext_qtd, QH_ALTNEXT_NAKCNT); |
1911 |
if (q->usb_status == USB_RET_NAK) {
|
1912 |
if (nakcnt) {
|
1913 |
nakcnt--; |
1914 |
} |
1915 |
} else {
|
1916 |
nakcnt = reload; |
1917 |
} |
1918 |
set_field(&q->qh.altnext_qtd, nakcnt, QH_ALTNEXT_NAKCNT); |
1919 |
} |
1920 |
|
1921 |
/* 4.10.5 */
|
1922 |
if ((q->usb_status == USB_RET_NAK) || (q->qh.token & QTD_TOKEN_ACTIVE)) {
|
1923 |
ehci_set_state(q->ehci, async, EST_HORIZONTALQH); |
1924 |
} else {
|
1925 |
ehci_set_state(q->ehci, async, EST_WRITEBACK); |
1926 |
} |
1927 |
|
1928 |
again = 1;
|
1929 |
|
1930 |
out:
|
1931 |
ehci_flush_qh(q); |
1932 |
return again;
|
1933 |
} |
1934 |
|
1935 |
|
1936 |
static int ehci_state_writeback(EHCIQueue *q, int async) |
1937 |
{ |
1938 |
int again = 0; |
1939 |
|
1940 |
/* Write back the QTD from the QH area */
|
1941 |
ehci_trace_qtd(q, NLPTR_GET(q->qtdaddr), (EHCIqtd*) &q->qh.next_qtd); |
1942 |
put_dwords(NLPTR_GET(q->qtdaddr),(uint32_t *) &q->qh.next_qtd, |
1943 |
sizeof(EHCIqtd) >> 2); |
1944 |
|
1945 |
/*
|
1946 |
* EHCI specs say go horizontal here.
|
1947 |
*
|
1948 |
* We can also advance the queue here for performance reasons. We
|
1949 |
* need to take care to only take that shortcut in case we've
|
1950 |
* processed the qtd just written back without errors, i.e. halt
|
1951 |
* bit is clear.
|
1952 |
*/
|
1953 |
if (q->qh.token & QTD_TOKEN_HALT) {
|
1954 |
ehci_set_state(q->ehci, async, EST_HORIZONTALQH); |
1955 |
again = 1;
|
1956 |
} else {
|
1957 |
ehci_set_state(q->ehci, async, EST_ADVANCEQUEUE); |
1958 |
again = 1;
|
1959 |
} |
1960 |
return again;
|
1961 |
} |
1962 |
|
1963 |
/*
|
1964 |
* This is the state machine that is common to both async and periodic
|
1965 |
*/
|
1966 |
|
1967 |
static void ehci_advance_state(EHCIState *ehci, |
1968 |
int async)
|
1969 |
{ |
1970 |
EHCIQueue *q = NULL;
|
1971 |
int again;
|
1972 |
int iter = 0; |
1973 |
|
1974 |
do {
|
1975 |
if (ehci_get_state(ehci, async) == EST_FETCHQH) {
|
1976 |
iter++; |
1977 |
/* if we are roaming a lot of QH without executing a qTD
|
1978 |
* something is wrong with the linked list. TO-DO: why is
|
1979 |
* this hack needed?
|
1980 |
*/
|
1981 |
assert(iter < MAX_ITERATIONS); |
1982 |
#if 0
|
1983 |
if (iter > MAX_ITERATIONS) {
|
1984 |
DPRINTF("\n*** advance_state: bailing on MAX ITERATIONS***\n");
|
1985 |
ehci_set_state(ehci, async, EST_ACTIVE);
|
1986 |
break;
|
1987 |
}
|
1988 |
#endif
|
1989 |
} |
1990 |
switch(ehci_get_state(ehci, async)) {
|
1991 |
case EST_WAITLISTHEAD:
|
1992 |
again = ehci_state_waitlisthead(ehci, async); |
1993 |
break;
|
1994 |
|
1995 |
case EST_FETCHENTRY:
|
1996 |
again = ehci_state_fetchentry(ehci, async); |
1997 |
break;
|
1998 |
|
1999 |
case EST_FETCHQH:
|
2000 |
q = ehci_state_fetchqh(ehci, async); |
2001 |
again = q ? 1 : 0; |
2002 |
break;
|
2003 |
|
2004 |
case EST_FETCHITD:
|
2005 |
again = ehci_state_fetchitd(ehci, async); |
2006 |
break;
|
2007 |
|
2008 |
case EST_ADVANCEQUEUE:
|
2009 |
again = ehci_state_advqueue(q, async); |
2010 |
break;
|
2011 |
|
2012 |
case EST_FETCHQTD:
|
2013 |
again = ehci_state_fetchqtd(q, async); |
2014 |
break;
|
2015 |
|
2016 |
case EST_HORIZONTALQH:
|
2017 |
again = ehci_state_horizqh(q, async); |
2018 |
break;
|
2019 |
|
2020 |
case EST_EXECUTE:
|
2021 |
iter = 0;
|
2022 |
again = ehci_state_execute(q, async); |
2023 |
break;
|
2024 |
|
2025 |
case EST_EXECUTING:
|
2026 |
assert(q != NULL);
|
2027 |
again = ehci_state_executing(q, async); |
2028 |
break;
|
2029 |
|
2030 |
case EST_WRITEBACK:
|
2031 |
again = ehci_state_writeback(q, async); |
2032 |
break;
|
2033 |
|
2034 |
default:
|
2035 |
fprintf(stderr, "Bad state!\n");
|
2036 |
again = -1;
|
2037 |
assert(0);
|
2038 |
break;
|
2039 |
} |
2040 |
|
2041 |
if (again < 0) { |
2042 |
fprintf(stderr, "processing error - resetting ehci HC\n");
|
2043 |
ehci_reset(ehci); |
2044 |
again = 0;
|
2045 |
assert(0);
|
2046 |
} |
2047 |
} |
2048 |
while (again);
|
2049 |
|
2050 |
ehci_commit_interrupt(ehci); |
2051 |
} |
2052 |
|
2053 |
static void ehci_advance_async_state(EHCIState *ehci) |
2054 |
{ |
2055 |
int async = 1; |
2056 |
|
2057 |
switch(ehci_get_state(ehci, async)) {
|
2058 |
case EST_INACTIVE:
|
2059 |
if (!(ehci->usbcmd & USBCMD_ASE)) {
|
2060 |
break;
|
2061 |
} |
2062 |
ehci_set_usbsts(ehci, USBSTS_ASS); |
2063 |
ehci_set_state(ehci, async, EST_ACTIVE); |
2064 |
// No break, fall through to ACTIVE
|
2065 |
|
2066 |
case EST_ACTIVE:
|
2067 |
if ( !(ehci->usbcmd & USBCMD_ASE)) {
|
2068 |
ehci_clear_usbsts(ehci, USBSTS_ASS); |
2069 |
ehci_set_state(ehci, async, EST_INACTIVE); |
2070 |
break;
|
2071 |
} |
2072 |
|
2073 |
/* If the doorbell is set, the guest wants to make a change to the
|
2074 |
* schedule. The host controller needs to release cached data.
|
2075 |
* (section 4.8.2)
|
2076 |
*/
|
2077 |
if (ehci->usbcmd & USBCMD_IAAD) {
|
2078 |
DPRINTF("ASYNC: doorbell request acknowledged\n");
|
2079 |
ehci->usbcmd &= ~USBCMD_IAAD; |
2080 |
ehci_set_interrupt(ehci, USBSTS_IAA); |
2081 |
break;
|
2082 |
} |
2083 |
|
2084 |
/* make sure guest has acknowledged */
|
2085 |
/* TO-DO: is this really needed? */
|
2086 |
if (ehci->usbsts & USBSTS_IAA) {
|
2087 |
DPRINTF("IAA status bit still set.\n");
|
2088 |
break;
|
2089 |
} |
2090 |
|
2091 |
/* check that address register has been set */
|
2092 |
if (ehci->asynclistaddr == 0) { |
2093 |
break;
|
2094 |
} |
2095 |
|
2096 |
ehci_set_state(ehci, async, EST_WAITLISTHEAD); |
2097 |
ehci_advance_state(ehci, async); |
2098 |
break;
|
2099 |
|
2100 |
default:
|
2101 |
/* this should only be due to a developer mistake */
|
2102 |
fprintf(stderr, "ehci: Bad asynchronous state %d. "
|
2103 |
"Resetting to active\n", ehci->astate);
|
2104 |
assert(0);
|
2105 |
} |
2106 |
} |
2107 |
|
2108 |
static void ehci_advance_periodic_state(EHCIState *ehci) |
2109 |
{ |
2110 |
uint32_t entry; |
2111 |
uint32_t list; |
2112 |
int async = 0; |
2113 |
|
2114 |
// 4.6
|
2115 |
|
2116 |
switch(ehci_get_state(ehci, async)) {
|
2117 |
case EST_INACTIVE:
|
2118 |
if ( !(ehci->frindex & 7) && (ehci->usbcmd & USBCMD_PSE)) { |
2119 |
ehci_set_usbsts(ehci, USBSTS_PSS); |
2120 |
ehci_set_state(ehci, async, EST_ACTIVE); |
2121 |
// No break, fall through to ACTIVE
|
2122 |
} else
|
2123 |
break;
|
2124 |
|
2125 |
case EST_ACTIVE:
|
2126 |
if ( !(ehci->frindex & 7) && !(ehci->usbcmd & USBCMD_PSE)) { |
2127 |
ehci_clear_usbsts(ehci, USBSTS_PSS); |
2128 |
ehci_set_state(ehci, async, EST_INACTIVE); |
2129 |
break;
|
2130 |
} |
2131 |
|
2132 |
list = ehci->periodiclistbase & 0xfffff000;
|
2133 |
/* check that register has been set */
|
2134 |
if (list == 0) { |
2135 |
break;
|
2136 |
} |
2137 |
list |= ((ehci->frindex & 0x1ff8) >> 1); |
2138 |
|
2139 |
cpu_physical_memory_rw(list, (uint8_t *) &entry, sizeof entry, 0); |
2140 |
entry = le32_to_cpu(entry); |
2141 |
|
2142 |
DPRINTF("PERIODIC state adv fr=%d. [%08X] -> %08X\n",
|
2143 |
ehci->frindex / 8, list, entry);
|
2144 |
ehci_set_fetch_addr(ehci, async,entry); |
2145 |
ehci_set_state(ehci, async, EST_FETCHENTRY); |
2146 |
ehci_advance_state(ehci, async); |
2147 |
break;
|
2148 |
|
2149 |
default:
|
2150 |
/* this should only be due to a developer mistake */
|
2151 |
fprintf(stderr, "ehci: Bad periodic state %d. "
|
2152 |
"Resetting to active\n", ehci->pstate);
|
2153 |
assert(0);
|
2154 |
} |
2155 |
} |
2156 |
|
2157 |
static void ehci_frame_timer(void *opaque) |
2158 |
{ |
2159 |
EHCIState *ehci = opaque; |
2160 |
int64_t expire_time, t_now; |
2161 |
uint64_t ns_elapsed; |
2162 |
int frames;
|
2163 |
int i;
|
2164 |
int skipped_frames = 0; |
2165 |
|
2166 |
t_now = qemu_get_clock_ns(vm_clock); |
2167 |
expire_time = t_now + (get_ticks_per_sec() / ehci->freq); |
2168 |
|
2169 |
ns_elapsed = t_now - ehci->last_run_ns; |
2170 |
frames = ns_elapsed / FRAME_TIMER_NS; |
2171 |
|
2172 |
for (i = 0; i < frames; i++) { |
2173 |
if ( !(ehci->usbsts & USBSTS_HALT)) {
|
2174 |
if (ehci->isoch_pause <= 0) { |
2175 |
ehci->frindex += 8;
|
2176 |
} |
2177 |
|
2178 |
if (ehci->frindex > 0x00001fff) { |
2179 |
ehci->frindex = 0;
|
2180 |
ehci_set_interrupt(ehci, USBSTS_FLR); |
2181 |
} |
2182 |
|
2183 |
ehci->sofv = (ehci->frindex - 1) >> 3; |
2184 |
ehci->sofv &= 0x000003ff;
|
2185 |
} |
2186 |
|
2187 |
if (frames - i > ehci->maxframes) {
|
2188 |
skipped_frames++; |
2189 |
} else {
|
2190 |
ehci_advance_periodic_state(ehci); |
2191 |
} |
2192 |
|
2193 |
ehci->last_run_ns += FRAME_TIMER_NS; |
2194 |
} |
2195 |
|
2196 |
#if 0
|
2197 |
if (skipped_frames) {
|
2198 |
DPRINTF("WARNING - EHCI skipped %d frames\n", skipped_frames);
|
2199 |
}
|
2200 |
#endif
|
2201 |
|
2202 |
/* Async is not inside loop since it executes everything it can once
|
2203 |
* called
|
2204 |
*/
|
2205 |
ehci_advance_async_state(ehci); |
2206 |
|
2207 |
qemu_mod_timer(ehci->frame_timer, expire_time); |
2208 |
} |
2209 |
|
2210 |
static CPUReadMemoryFunc *ehci_readfn[3]={ |
2211 |
ehci_mem_readb, |
2212 |
ehci_mem_readw, |
2213 |
ehci_mem_readl |
2214 |
}; |
2215 |
|
2216 |
static CPUWriteMemoryFunc *ehci_writefn[3]={ |
2217 |
ehci_mem_writeb, |
2218 |
ehci_mem_writew, |
2219 |
ehci_mem_writel |
2220 |
}; |
2221 |
|
2222 |
static void ehci_map(PCIDevice *pci_dev, int region_num, |
2223 |
pcibus_t addr, pcibus_t size, int type)
|
2224 |
{ |
2225 |
EHCIState *s =(EHCIState *)pci_dev; |
2226 |
|
2227 |
DPRINTF("ehci_map: region %d, addr %08" PRIx64 ", size %" PRId64 ", s->mem %08X\n", |
2228 |
region_num, addr, size, s->mem); |
2229 |
s->mem_base = addr; |
2230 |
cpu_register_physical_memory(addr, size, s->mem); |
2231 |
} |
2232 |
|
2233 |
static int usb_ehci_initfn(PCIDevice *dev); |
2234 |
|
2235 |
static USBPortOps ehci_port_ops = {
|
2236 |
.attach = ehci_attach, |
2237 |
.detach = ehci_detach, |
2238 |
.child_detach = ehci_child_detach, |
2239 |
.wakeup = ehci_wakeup, |
2240 |
.complete = ehci_async_complete_packet, |
2241 |
}; |
2242 |
|
2243 |
static USBBusOps ehci_bus_ops = {
|
2244 |
.register_companion = ehci_register_companion, |
2245 |
}; |
2246 |
|
2247 |
static PCIDeviceInfo ehci_info = {
|
2248 |
.qdev.name = "usb-ehci",
|
2249 |
.qdev.size = sizeof(EHCIState),
|
2250 |
.init = usb_ehci_initfn, |
2251 |
.vendor_id = PCI_VENDOR_ID_INTEL, |
2252 |
.device_id = PCI_DEVICE_ID_INTEL_82801D, |
2253 |
.revision = 0x10,
|
2254 |
.class_id = PCI_CLASS_SERIAL_USB, |
2255 |
.qdev.props = (Property[]) { |
2256 |
DEFINE_PROP_UINT32("freq", EHCIState, freq, FRAME_TIMER_FREQ),
|
2257 |
DEFINE_PROP_UINT32("maxframes", EHCIState, maxframes, 128), |
2258 |
DEFINE_PROP_END_OF_LIST(), |
2259 |
}, |
2260 |
}; |
2261 |
|
2262 |
static int usb_ehci_initfn(PCIDevice *dev) |
2263 |
{ |
2264 |
EHCIState *s = DO_UPCAST(EHCIState, dev, dev); |
2265 |
uint8_t *pci_conf = s->dev.config; |
2266 |
int i;
|
2267 |
|
2268 |
pci_set_byte(&pci_conf[PCI_CLASS_PROG], 0x20);
|
2269 |
|
2270 |
/* capabilities pointer */
|
2271 |
pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x00);
|
2272 |
//pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x50);
|
2273 |
|
2274 |
pci_set_byte(&pci_conf[PCI_INTERRUPT_PIN], 4); // interrupt pin 3 |
2275 |
pci_set_byte(&pci_conf[PCI_MIN_GNT], 0);
|
2276 |
pci_set_byte(&pci_conf[PCI_MAX_LAT], 0);
|
2277 |
|
2278 |
// pci_conf[0x50] = 0x01; // power management caps
|
2279 |
|
2280 |
pci_set_byte(&pci_conf[USB_SBRN], USB_RELEASE_2); // release number (2.1.4)
|
2281 |
pci_set_byte(&pci_conf[0x61], 0x20); // frame length adjustment (2.1.5) |
2282 |
pci_set_word(&pci_conf[0x62], 0x00); // port wake up capability (2.1.6) |
2283 |
|
2284 |
pci_conf[0x64] = 0x00; |
2285 |
pci_conf[0x65] = 0x00; |
2286 |
pci_conf[0x66] = 0x00; |
2287 |
pci_conf[0x67] = 0x00; |
2288 |
pci_conf[0x68] = 0x01; |
2289 |
pci_conf[0x69] = 0x00; |
2290 |
pci_conf[0x6a] = 0x00; |
2291 |
pci_conf[0x6b] = 0x00; // USBLEGSUP |
2292 |
pci_conf[0x6c] = 0x00; |
2293 |
pci_conf[0x6d] = 0x00; |
2294 |
pci_conf[0x6e] = 0x00; |
2295 |
pci_conf[0x6f] = 0xc0; // USBLEFCTLSTS |
2296 |
|
2297 |
// 2.2 host controller interface version
|
2298 |
s->mmio[0x00] = (uint8_t) OPREGBASE;
|
2299 |
s->mmio[0x01] = 0x00; |
2300 |
s->mmio[0x02] = 0x00; |
2301 |
s->mmio[0x03] = 0x01; // HC version |
2302 |
s->mmio[0x04] = NB_PORTS; // Number of downstream ports |
2303 |
s->mmio[0x05] = 0x00; // No companion ports at present |
2304 |
s->mmio[0x06] = 0x00; |
2305 |
s->mmio[0x07] = 0x00; |
2306 |
s->mmio[0x08] = 0x80; // We can cache whole frame, not 64-bit capable |
2307 |
s->mmio[0x09] = 0x68; // EECP |
2308 |
s->mmio[0x0a] = 0x00; |
2309 |
s->mmio[0x0b] = 0x00; |
2310 |
|
2311 |
s->irq = s->dev.irq[3];
|
2312 |
|
2313 |
usb_bus_new(&s->bus, &ehci_bus_ops, &s->dev.qdev); |
2314 |
for(i = 0; i < NB_PORTS; i++) { |
2315 |
usb_register_port(&s->bus, &s->ports[i], s, i, &ehci_port_ops, |
2316 |
USB_SPEED_MASK_HIGH); |
2317 |
s->ports[i].dev = 0;
|
2318 |
} |
2319 |
|
2320 |
s->frame_timer = qemu_new_timer_ns(vm_clock, ehci_frame_timer, s); |
2321 |
QTAILQ_INIT(&s->queues); |
2322 |
|
2323 |
qemu_register_reset(ehci_reset, s); |
2324 |
|
2325 |
s->mem = cpu_register_io_memory(ehci_readfn, ehci_writefn, s, |
2326 |
DEVICE_LITTLE_ENDIAN); |
2327 |
|
2328 |
pci_register_bar(&s->dev, 0, MMIO_SIZE, PCI_BASE_ADDRESS_SPACE_MEMORY,
|
2329 |
ehci_map); |
2330 |
|
2331 |
fprintf(stderr, "*** EHCI support is under development ***\n");
|
2332 |
|
2333 |
return 0; |
2334 |
} |
2335 |
|
2336 |
static void ehci_register(void) |
2337 |
{ |
2338 |
pci_qdev_register(&ehci_info); |
2339 |
} |
2340 |
device_init(ehci_register); |
2341 |
|
2342 |
/*
|
2343 |
* vim: expandtab ts=4
|
2344 |
*/
|