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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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* TODO:
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* o Downstream port handoff
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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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#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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#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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#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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* 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 reserverd 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 0x007021c5 |
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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_USEC (1000000 / 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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} 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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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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/* 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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#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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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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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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typedef struct { |
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PCIDevice dev; |
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qemu_irq irq; |
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target_phys_addr_t mem_base; |
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int mem;
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int num_ports;
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/*
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* EHCI spec version 1.0 Section 2.3
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* Host Controller Operational Registers
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*/
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union {
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uint8_t mmio[MMIO_SIZE]; |
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struct {
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uint8_t cap[OPREGBASE]; |
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uint32_t usbcmd; |
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uint32_t usbsts; |
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uint32_t usbintr; |
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uint32_t frindex; |
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uint32_t ctrldssegment; |
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uint32_t periodiclistbase; |
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uint32_t asynclistaddr; |
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uint32_t notused[9];
|
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uint32_t configflag; |
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uint32_t portsc[NB_PORTS]; |
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}; |
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}; |
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/*
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* Internal states, shadow registers, etc
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*/
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uint32_t sofv; |
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QEMUTimer *frame_timer; |
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int attach_poll_counter;
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int astate; // Current state in asynchronous schedule |
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int pstate; // Current state in periodic schedule |
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USBPort ports[NB_PORTS]; |
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uint8_t buffer[BUFF_SIZE]; |
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uint32_t usbsts_pending; |
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|
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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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|
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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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uint32_t itdaddr; // current ITD
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|
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uint32_t fetch_addr; // which address to look at next
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|
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USBBus bus; |
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USBPacket usb_packet; |
390 |
int async_complete;
|
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uint32_t tbytes; |
392 |
int pid;
|
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int exec_status;
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int isoch_pause;
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uint32_t last_run_usec; |
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uint32_t frame_end_usec; |
397 |
} EHCIState; |
398 |
|
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#define SET_LAST_RUN_CLOCK(s) \
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(s)->last_run_usec = qemu_get_clock_ns(vm_clock) / 1000;
|
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|
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/* nifty macros from Arnon's EHCI version */
|
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#define get_field(data, field) \
|
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(((data) & field##_MASK) >> field##_SH) |
405 |
|
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#define set_field(data, newval, field) do { \ |
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uint32_t val = *data; \ |
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val &= ~ field##_MASK; \ |
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val |= ((newval) << field##_SH) & field##_MASK; \ |
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*data = val; \ |
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} while(0) |
412 |
|
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static const char *ehci_state_names[] = { |
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[ 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",
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}; |
428 |
|
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static const char *ehci_mmio_names[] = { |
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[ CAPLENGTH ] = "CAPLENGTH",
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[ HCIVERSION ] = "HCIVERSION",
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[ HCSPARAMS ] = "HCSPARAMS",
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[ HCCPARAMS ] = "HCCPARAMS",
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[ USBCMD ] = "USBCMD",
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[ USBSTS ] = "USBSTS",
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[ USBINTR ] = "USBINTR",
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[ FRINDEX ] = "FRINDEX",
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[ PERIODICLISTBASE ] = "P-LIST BASE",
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[ ASYNCLISTADDR ] = "A-LIST ADDR",
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[ PORTSC_BEGIN ] = "PORTSC #0",
|
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[ PORTSC_BEGIN + 4] = "PORTSC #1", |
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[ PORTSC_BEGIN + 8] = "PORTSC #2", |
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[ PORTSC_BEGIN + 12] = "PORTSC #3", |
444 |
[ CONFIGFLAG ] = "CONFIGFLAG",
|
445 |
}; |
446 |
|
447 |
static const char *nr2str(const char **n, size_t len, uint32_t nr) |
448 |
{ |
449 |
if (nr < len && n[nr] != NULL) { |
450 |
return n[nr];
|
451 |
} else {
|
452 |
return "unknown"; |
453 |
} |
454 |
} |
455 |
|
456 |
static const char *state2str(uint32_t state) |
457 |
{ |
458 |
return nr2str(ehci_state_names, ARRAY_SIZE(ehci_state_names), state);
|
459 |
} |
460 |
|
461 |
static const char *addr2str(target_phys_addr_t addr) |
462 |
{ |
463 |
return nr2str(ehci_mmio_names, ARRAY_SIZE(ehci_mmio_names), addr);
|
464 |
} |
465 |
|
466 |
static void ehci_trace_usbsts(uint32_t mask, int state) |
467 |
{ |
468 |
/* interrupts */
|
469 |
if (mask & USBSTS_INT) {
|
470 |
trace_usb_ehci_usbsts("INT", state);
|
471 |
} |
472 |
if (mask & USBSTS_ERRINT) {
|
473 |
trace_usb_ehci_usbsts("ERRINT", state);
|
474 |
} |
475 |
if (mask & USBSTS_PCD) {
|
476 |
trace_usb_ehci_usbsts("PCD", state);
|
477 |
} |
478 |
if (mask & USBSTS_FLR) {
|
479 |
trace_usb_ehci_usbsts("FLR", state);
|
480 |
} |
481 |
if (mask & USBSTS_HSE) {
|
482 |
trace_usb_ehci_usbsts("HSE", state);
|
483 |
} |
484 |
if (mask & USBSTS_IAA) {
|
485 |
trace_usb_ehci_usbsts("IAA", state);
|
486 |
} |
487 |
|
488 |
/* status */
|
489 |
if (mask & USBSTS_HALT) {
|
490 |
trace_usb_ehci_usbsts("HALT", state);
|
491 |
} |
492 |
if (mask & USBSTS_REC) {
|
493 |
trace_usb_ehci_usbsts("REC", state);
|
494 |
} |
495 |
if (mask & USBSTS_PSS) {
|
496 |
trace_usb_ehci_usbsts("PSS", state);
|
497 |
} |
498 |
if (mask & USBSTS_ASS) {
|
499 |
trace_usb_ehci_usbsts("ASS", state);
|
500 |
} |
501 |
} |
502 |
|
503 |
static inline void ehci_set_usbsts(EHCIState *s, int mask) |
504 |
{ |
505 |
if ((s->usbsts & mask) == mask) {
|
506 |
return;
|
507 |
} |
508 |
ehci_trace_usbsts(mask, 1);
|
509 |
s->usbsts |= mask; |
510 |
} |
511 |
|
512 |
static inline void ehci_clear_usbsts(EHCIState *s, int mask) |
513 |
{ |
514 |
if ((s->usbsts & mask) == 0) { |
515 |
return;
|
516 |
} |
517 |
ehci_trace_usbsts(mask, 0);
|
518 |
s->usbsts &= ~mask; |
519 |
} |
520 |
|
521 |
static inline void ehci_set_interrupt(EHCIState *s, int intr) |
522 |
{ |
523 |
int level = 0; |
524 |
|
525 |
// TODO honour interrupt threshold requests
|
526 |
|
527 |
ehci_set_usbsts(s, intr); |
528 |
|
529 |
if ((s->usbsts & USBINTR_MASK) & s->usbintr) {
|
530 |
level = 1;
|
531 |
} |
532 |
|
533 |
qemu_set_irq(s->irq, level); |
534 |
} |
535 |
|
536 |
static inline void ehci_record_interrupt(EHCIState *s, int intr) |
537 |
{ |
538 |
s->usbsts_pending |= intr; |
539 |
} |
540 |
|
541 |
static inline void ehci_commit_interrupt(EHCIState *s) |
542 |
{ |
543 |
if (!s->usbsts_pending) {
|
544 |
return;
|
545 |
} |
546 |
ehci_set_interrupt(s, s->usbsts_pending); |
547 |
s->usbsts_pending = 0;
|
548 |
} |
549 |
|
550 |
static void ehci_set_state(EHCIState *s, int async, int state) |
551 |
{ |
552 |
if (async) {
|
553 |
trace_usb_ehci_state("async", state2str(state));
|
554 |
s->astate = state; |
555 |
} else {
|
556 |
trace_usb_ehci_state("periodic", state2str(state));
|
557 |
s->pstate = state; |
558 |
} |
559 |
} |
560 |
|
561 |
static int ehci_get_state(EHCIState *s, int async) |
562 |
{ |
563 |
return async ? s->astate : s->pstate;
|
564 |
} |
565 |
|
566 |
static void ehci_trace_qh(EHCIState *s, target_phys_addr_t addr, EHCIqh *qh) |
567 |
{ |
568 |
trace_usb_ehci_qh(addr, qh->next, |
569 |
qh->current_qtd, qh->next_qtd, qh->altnext_qtd, |
570 |
get_field(qh->epchar, QH_EPCHAR_RL), |
571 |
get_field(qh->epchar, QH_EPCHAR_MPLEN), |
572 |
get_field(qh->epchar, QH_EPCHAR_EPS), |
573 |
get_field(qh->epchar, QH_EPCHAR_EP), |
574 |
get_field(qh->epchar, QH_EPCHAR_DEVADDR), |
575 |
(bool)(qh->epchar & QH_EPCHAR_C),
|
576 |
(bool)(qh->epchar & QH_EPCHAR_H),
|
577 |
(bool)(qh->epchar & QH_EPCHAR_DTC),
|
578 |
(bool)(qh->epchar & QH_EPCHAR_I));
|
579 |
} |
580 |
|
581 |
static void ehci_trace_qtd(EHCIState *s, target_phys_addr_t addr, EHCIqtd *qtd) |
582 |
{ |
583 |
trace_usb_ehci_qtd(addr, qtd->next, qtd->altnext, |
584 |
get_field(qtd->token, QTD_TOKEN_TBYTES), |
585 |
get_field(qtd->token, QTD_TOKEN_CPAGE), |
586 |
get_field(qtd->token, QTD_TOKEN_CERR), |
587 |
get_field(qtd->token, QTD_TOKEN_PID), |
588 |
(bool)(qtd->token & QTD_TOKEN_IOC),
|
589 |
(bool)(qtd->token & QTD_TOKEN_ACTIVE),
|
590 |
(bool)(qtd->token & QTD_TOKEN_HALT),
|
591 |
(bool)(qtd->token & QTD_TOKEN_BABBLE),
|
592 |
(bool)(qtd->token & QTD_TOKEN_XACTERR));
|
593 |
} |
594 |
|
595 |
static void ehci_trace_itd(EHCIState *s, target_phys_addr_t addr, EHCIitd *itd) |
596 |
{ |
597 |
trace_usb_ehci_itd(addr, itd->next); |
598 |
} |
599 |
|
600 |
/* Attach or detach a device on root hub */
|
601 |
|
602 |
static void ehci_attach(USBPort *port) |
603 |
{ |
604 |
EHCIState *s = port->opaque; |
605 |
uint32_t *portsc = &s->portsc[port->index]; |
606 |
|
607 |
trace_usb_ehci_port_attach(port->index, port->dev->product_desc); |
608 |
|
609 |
*portsc |= PORTSC_CONNECT; |
610 |
*portsc |= PORTSC_CSC; |
611 |
|
612 |
/*
|
613 |
* If a high speed device is attached then we own this port(indicated
|
614 |
* by zero in the PORTSC_POWNER bit field) so set the status bit
|
615 |
* and set an interrupt if enabled.
|
616 |
*/
|
617 |
if ( !(*portsc & PORTSC_POWNER)) {
|
618 |
ehci_set_interrupt(s, USBSTS_PCD); |
619 |
} |
620 |
} |
621 |
|
622 |
static void ehci_detach(USBPort *port) |
623 |
{ |
624 |
EHCIState *s = port->opaque; |
625 |
uint32_t *portsc = &s->portsc[port->index]; |
626 |
|
627 |
trace_usb_ehci_port_detach(port->index); |
628 |
|
629 |
*portsc &= ~PORTSC_CONNECT; |
630 |
*portsc |= PORTSC_CSC; |
631 |
|
632 |
/*
|
633 |
* If a high speed device is attached then we own this port(indicated
|
634 |
* by zero in the PORTSC_POWNER bit field) so set the status bit
|
635 |
* and set an interrupt if enabled.
|
636 |
*/
|
637 |
if ( !(*portsc & PORTSC_POWNER)) {
|
638 |
ehci_set_interrupt(s, USBSTS_PCD); |
639 |
} |
640 |
} |
641 |
|
642 |
/* 4.1 host controller initialization */
|
643 |
static void ehci_reset(void *opaque) |
644 |
{ |
645 |
EHCIState *s = opaque; |
646 |
uint8_t *pci_conf; |
647 |
int i;
|
648 |
|
649 |
trace_usb_ehci_reset(); |
650 |
pci_conf = s->dev.config; |
651 |
|
652 |
memset(&s->mmio[OPREGBASE], 0x00, MMIO_SIZE - OPREGBASE);
|
653 |
|
654 |
s->usbcmd = NB_MAXINTRATE << USBCMD_ITC_SH; |
655 |
s->usbsts = USBSTS_HALT; |
656 |
|
657 |
s->astate = EST_INACTIVE; |
658 |
s->pstate = EST_INACTIVE; |
659 |
s->async_complete = 0;
|
660 |
s->isoch_pause = -1;
|
661 |
s->attach_poll_counter = 0;
|
662 |
|
663 |
for(i = 0; i < NB_PORTS; i++) { |
664 |
s->portsc[i] = PORTSC_POWNER | PORTSC_PPOWER; |
665 |
|
666 |
if (s->ports[i].dev) {
|
667 |
usb_attach(&s->ports[i], s->ports[i].dev); |
668 |
} |
669 |
} |
670 |
} |
671 |
|
672 |
static uint32_t ehci_mem_readb(void *ptr, target_phys_addr_t addr) |
673 |
{ |
674 |
EHCIState *s = ptr; |
675 |
uint32_t val; |
676 |
|
677 |
val = s->mmio[addr]; |
678 |
|
679 |
return val;
|
680 |
} |
681 |
|
682 |
static uint32_t ehci_mem_readw(void *ptr, target_phys_addr_t addr) |
683 |
{ |
684 |
EHCIState *s = ptr; |
685 |
uint32_t val; |
686 |
|
687 |
val = s->mmio[addr] | (s->mmio[addr+1] << 8); |
688 |
|
689 |
return val;
|
690 |
} |
691 |
|
692 |
static uint32_t ehci_mem_readl(void *ptr, target_phys_addr_t addr) |
693 |
{ |
694 |
EHCIState *s = ptr; |
695 |
uint32_t val; |
696 |
|
697 |
val = s->mmio[addr] | (s->mmio[addr+1] << 8) | |
698 |
(s->mmio[addr+2] << 16) | (s->mmio[addr+3] << 24); |
699 |
|
700 |
trace_usb_ehci_mmio_readl(addr, addr2str(addr), val); |
701 |
return val;
|
702 |
} |
703 |
|
704 |
static void ehci_mem_writeb(void *ptr, target_phys_addr_t addr, uint32_t val) |
705 |
{ |
706 |
fprintf(stderr, "EHCI doesn't handle byte writes to MMIO\n");
|
707 |
exit(1);
|
708 |
} |
709 |
|
710 |
static void ehci_mem_writew(void *ptr, target_phys_addr_t addr, uint32_t val) |
711 |
{ |
712 |
fprintf(stderr, "EHCI doesn't handle 16-bit writes to MMIO\n");
|
713 |
exit(1);
|
714 |
} |
715 |
|
716 |
static void handle_port_status_write(EHCIState *s, int port, uint32_t val) |
717 |
{ |
718 |
uint32_t *portsc = &s->portsc[port]; |
719 |
int rwc;
|
720 |
USBDevice *dev = s->ports[port].dev; |
721 |
|
722 |
rwc = val & PORTSC_RWC_MASK; |
723 |
val &= PORTSC_RO_MASK; |
724 |
|
725 |
// handle_read_write_clear(&val, portsc, PORTSC_PEDC | PORTSC_CSC);
|
726 |
|
727 |
*portsc &= ~rwc; |
728 |
|
729 |
if ((val & PORTSC_PRESET) && !(*portsc & PORTSC_PRESET)) {
|
730 |
trace_usb_ehci_port_reset(port, 1);
|
731 |
} |
732 |
|
733 |
if (!(val & PORTSC_PRESET) &&(*portsc & PORTSC_PRESET)) {
|
734 |
trace_usb_ehci_port_reset(port, 0);
|
735 |
usb_attach(&s->ports[port], dev); |
736 |
|
737 |
// TODO how to handle reset of ports with no device
|
738 |
if (dev) {
|
739 |
usb_send_msg(dev, USB_MSG_RESET); |
740 |
} |
741 |
|
742 |
if (s->ports[port].dev) {
|
743 |
*portsc &= ~PORTSC_CSC; |
744 |
} |
745 |
|
746 |
/* Table 2.16 Set the enable bit(and enable bit change) to indicate
|
747 |
* to SW that this port has a high speed device attached
|
748 |
*
|
749 |
* TODO - when to disable?
|
750 |
*/
|
751 |
val |= PORTSC_PED; |
752 |
val |= PORTSC_PEDC; |
753 |
} |
754 |
|
755 |
*portsc &= ~PORTSC_RO_MASK; |
756 |
*portsc |= val; |
757 |
} |
758 |
|
759 |
static void ehci_mem_writel(void *ptr, target_phys_addr_t addr, uint32_t val) |
760 |
{ |
761 |
EHCIState *s = ptr; |
762 |
uint32_t *mmio = (uint32_t *)(&s->mmio[addr]); |
763 |
uint32_t old = *mmio; |
764 |
int i;
|
765 |
|
766 |
trace_usb_ehci_mmio_writel(addr, addr2str(addr), val); |
767 |
|
768 |
/* Only aligned reads are allowed on OHCI */
|
769 |
if (addr & 3) { |
770 |
fprintf(stderr, "usb-ehci: Mis-aligned write to addr 0x"
|
771 |
TARGET_FMT_plx "\n", addr);
|
772 |
return;
|
773 |
} |
774 |
|
775 |
if (addr >= PORTSC && addr < PORTSC + 4 * NB_PORTS) { |
776 |
handle_port_status_write(s, (addr-PORTSC)/4, val);
|
777 |
trace_usb_ehci_mmio_change(addr, addr2str(addr), *mmio, old); |
778 |
return;
|
779 |
} |
780 |
|
781 |
if (addr < OPREGBASE) {
|
782 |
fprintf(stderr, "usb-ehci: write attempt to read-only register"
|
783 |
TARGET_FMT_plx "\n", addr);
|
784 |
return;
|
785 |
} |
786 |
|
787 |
|
788 |
/* Do any register specific pre-write processing here. */
|
789 |
switch(addr) {
|
790 |
case USBCMD:
|
791 |
if ((val & USBCMD_RUNSTOP) && !(s->usbcmd & USBCMD_RUNSTOP)) {
|
792 |
qemu_mod_timer(s->frame_timer, qemu_get_clock_ns(vm_clock)); |
793 |
SET_LAST_RUN_CLOCK(s); |
794 |
ehci_clear_usbsts(s, USBSTS_HALT); |
795 |
} |
796 |
|
797 |
if (!(val & USBCMD_RUNSTOP) && (s->usbcmd & USBCMD_RUNSTOP)) {
|
798 |
qemu_del_timer(s->frame_timer); |
799 |
// TODO - should finish out some stuff before setting halt
|
800 |
ehci_set_usbsts(s, USBSTS_HALT); |
801 |
} |
802 |
|
803 |
if (val & USBCMD_HCRESET) {
|
804 |
ehci_reset(s); |
805 |
val &= ~USBCMD_HCRESET; |
806 |
} |
807 |
|
808 |
/* not supporting dynamic frame list size at the moment */
|
809 |
if ((val & USBCMD_FLS) && !(s->usbcmd & USBCMD_FLS)) {
|
810 |
fprintf(stderr, "attempt to set frame list size -- value %d\n",
|
811 |
val & USBCMD_FLS); |
812 |
val &= ~USBCMD_FLS; |
813 |
} |
814 |
break;
|
815 |
|
816 |
case USBSTS:
|
817 |
val &= USBSTS_RO_MASK; // bits 6 thru 31 are RO
|
818 |
ehci_clear_usbsts(s, val); // bits 0 thru 5 are R/WC
|
819 |
val = s->usbsts; |
820 |
ehci_set_interrupt(s, 0);
|
821 |
break;
|
822 |
|
823 |
case USBINTR:
|
824 |
val &= USBINTR_MASK; |
825 |
break;
|
826 |
|
827 |
case FRINDEX:
|
828 |
s->sofv = val >> 3;
|
829 |
break;
|
830 |
|
831 |
case CONFIGFLAG:
|
832 |
val &= 0x1;
|
833 |
if (val) {
|
834 |
for(i = 0; i < NB_PORTS; i++) |
835 |
s->portsc[i] &= ~PORTSC_POWNER; |
836 |
} |
837 |
break;
|
838 |
|
839 |
case PERIODICLISTBASE:
|
840 |
if ((s->usbcmd & USBCMD_PSE) && (s->usbcmd & USBCMD_RUNSTOP)) {
|
841 |
fprintf(stderr, |
842 |
"ehci: PERIODIC list base register set while periodic schedule\n"
|
843 |
" is enabled and HC is enabled\n");
|
844 |
} |
845 |
break;
|
846 |
|
847 |
case ASYNCLISTADDR:
|
848 |
if ((s->usbcmd & USBCMD_ASE) && (s->usbcmd & USBCMD_RUNSTOP)) {
|
849 |
fprintf(stderr, |
850 |
"ehci: ASYNC list address register set while async schedule\n"
|
851 |
" is enabled and HC is enabled\n");
|
852 |
} |
853 |
break;
|
854 |
} |
855 |
|
856 |
*mmio = val; |
857 |
trace_usb_ehci_mmio_change(addr, addr2str(addr), *mmio, old); |
858 |
} |
859 |
|
860 |
|
861 |
// TODO : Put in common header file, duplication from usb-ohci.c
|
862 |
|
863 |
/* Get an array of dwords from main memory */
|
864 |
static inline int get_dwords(uint32_t addr, uint32_t *buf, int num) |
865 |
{ |
866 |
int i;
|
867 |
|
868 |
for(i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { |
869 |
cpu_physical_memory_rw(addr,(uint8_t *)buf, sizeof(*buf), 0); |
870 |
*buf = le32_to_cpu(*buf); |
871 |
} |
872 |
|
873 |
return 1; |
874 |
} |
875 |
|
876 |
/* Put an array of dwords in to main memory */
|
877 |
static inline int put_dwords(uint32_t addr, uint32_t *buf, int num) |
878 |
{ |
879 |
int i;
|
880 |
|
881 |
for(i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { |
882 |
uint32_t tmp = cpu_to_le32(*buf); |
883 |
cpu_physical_memory_rw(addr,(uint8_t *)&tmp, sizeof(tmp), 1); |
884 |
} |
885 |
|
886 |
return 1; |
887 |
} |
888 |
|
889 |
// 4.10.2
|
890 |
|
891 |
static int ehci_qh_do_overlay(EHCIState *ehci, EHCIqh *qh, EHCIqtd *qtd) |
892 |
{ |
893 |
int i;
|
894 |
int dtoggle;
|
895 |
int ping;
|
896 |
int eps;
|
897 |
int reload;
|
898 |
|
899 |
// remember values in fields to preserve in qh after overlay
|
900 |
|
901 |
dtoggle = qh->token & QTD_TOKEN_DTOGGLE; |
902 |
ping = qh->token & QTD_TOKEN_PING; |
903 |
|
904 |
DPRINTF("setting qh.current from %08X to 0x%08X\n", qh->current_qtd,
|
905 |
ehci->qtdaddr); |
906 |
qh->current_qtd = ehci->qtdaddr; |
907 |
qh->next_qtd = qtd->next; |
908 |
qh->altnext_qtd = qtd->altnext; |
909 |
qh->token = qtd->token; |
910 |
|
911 |
|
912 |
eps = get_field(qh->epchar, QH_EPCHAR_EPS); |
913 |
if (eps == EHCI_QH_EPS_HIGH) {
|
914 |
qh->token &= ~QTD_TOKEN_PING; |
915 |
qh->token |= ping; |
916 |
} |
917 |
|
918 |
reload = get_field(qh->epchar, QH_EPCHAR_RL); |
919 |
set_field(&qh->altnext_qtd, reload, QH_ALTNEXT_NAKCNT); |
920 |
|
921 |
for (i = 0; i < 5; i++) { |
922 |
qh->bufptr[i] = qtd->bufptr[i]; |
923 |
} |
924 |
|
925 |
if (!(qh->epchar & QH_EPCHAR_DTC)) {
|
926 |
// preserve QH DT bit
|
927 |
qh->token &= ~QTD_TOKEN_DTOGGLE; |
928 |
qh->token |= dtoggle; |
929 |
} |
930 |
|
931 |
qh->bufptr[1] &= ~BUFPTR_CPROGMASK_MASK;
|
932 |
qh->bufptr[2] &= ~BUFPTR_FRAMETAG_MASK;
|
933 |
|
934 |
put_dwords(NLPTR_GET(ehci->qhaddr), (uint32_t *) qh, sizeof(EHCIqh) >> 2); |
935 |
|
936 |
return 0; |
937 |
} |
938 |
|
939 |
static int ehci_buffer_rw(uint8_t *buffer, EHCIqh *qh, int bytes, int rw) |
940 |
{ |
941 |
int bufpos = 0; |
942 |
int cpage, offset;
|
943 |
uint32_t head; |
944 |
uint32_t tail; |
945 |
|
946 |
|
947 |
if (!bytes) {
|
948 |
return 0; |
949 |
} |
950 |
|
951 |
cpage = get_field(qh->token, QTD_TOKEN_CPAGE); |
952 |
if (cpage > 4) { |
953 |
fprintf(stderr, "cpage out of range (%d)\n", cpage);
|
954 |
return USB_RET_PROCERR;
|
955 |
} |
956 |
|
957 |
offset = qh->bufptr[0] & ~QTD_BUFPTR_MASK;
|
958 |
DPRINTF("ehci_buffer_rw: %sing %d bytes %08x cpage %d offset %d\n",
|
959 |
rw ? "writ" : "read", bytes, qh->bufptr[0], cpage, offset); |
960 |
|
961 |
do {
|
962 |
/* start and end of this page */
|
963 |
head = qh->bufptr[cpage] & QTD_BUFPTR_MASK; |
964 |
tail = head + ~QTD_BUFPTR_MASK + 1;
|
965 |
/* add offset into page */
|
966 |
head |= offset; |
967 |
|
968 |
if (bytes <= (tail - head)) {
|
969 |
tail = head + bytes; |
970 |
} |
971 |
|
972 |
DPRINTF("DATA %s cpage:%d head:%08X tail:%08X target:%08X\n",
|
973 |
rw ? "WRITE" : "READ ", cpage, head, tail, bufpos); |
974 |
|
975 |
cpu_physical_memory_rw(head, &buffer[bufpos], tail - head, rw); |
976 |
|
977 |
bufpos += (tail - head); |
978 |
bytes -= (tail - head); |
979 |
|
980 |
if (bytes > 0) { |
981 |
cpage++; |
982 |
offset = 0;
|
983 |
} |
984 |
} while (bytes > 0); |
985 |
|
986 |
/* save cpage */
|
987 |
set_field(&qh->token, cpage, QTD_TOKEN_CPAGE); |
988 |
|
989 |
/* save offset into cpage */
|
990 |
offset = tail - head; |
991 |
qh->bufptr[0] &= ~QTD_BUFPTR_MASK;
|
992 |
qh->bufptr[0] |= offset;
|
993 |
|
994 |
return 0; |
995 |
} |
996 |
|
997 |
static void ehci_async_complete_packet(USBDevice *dev, USBPacket *packet) |
998 |
{ |
999 |
EHCIState *ehci = container_of(packet, EHCIState, usb_packet); |
1000 |
|
1001 |
DPRINTF("Async packet complete\n");
|
1002 |
ehci->async_complete = 1;
|
1003 |
ehci->exec_status = packet->len; |
1004 |
} |
1005 |
|
1006 |
static int ehci_execute_complete(EHCIState *ehci, EHCIqh *qh, int ret) |
1007 |
{ |
1008 |
int c_err, reload;
|
1009 |
|
1010 |
if (ret == USB_RET_ASYNC && !ehci->async_complete) {
|
1011 |
DPRINTF("not done yet\n");
|
1012 |
return ret;
|
1013 |
} |
1014 |
|
1015 |
ehci->async_complete = 0;
|
1016 |
|
1017 |
DPRINTF("execute_complete: qhaddr 0x%x, next %x, qtdaddr 0x%x, status %d\n",
|
1018 |
ehci->qhaddr, qh->next, ehci->qtdaddr, ret); |
1019 |
|
1020 |
if (ret < 0) { |
1021 |
err:
|
1022 |
/* TO-DO: put this is in a function that can be invoked below as well */
|
1023 |
c_err = get_field(qh->token, QTD_TOKEN_CERR); |
1024 |
c_err--; |
1025 |
set_field(&qh->token, c_err, QTD_TOKEN_CERR); |
1026 |
|
1027 |
switch(ret) {
|
1028 |
case USB_RET_NODEV:
|
1029 |
fprintf(stderr, "USB no device\n");
|
1030 |
break;
|
1031 |
case USB_RET_STALL:
|
1032 |
fprintf(stderr, "USB stall\n");
|
1033 |
qh->token |= QTD_TOKEN_HALT; |
1034 |
ehci_record_interrupt(ehci, USBSTS_ERRINT); |
1035 |
break;
|
1036 |
case USB_RET_NAK:
|
1037 |
/* 4.10.3 */
|
1038 |
reload = get_field(qh->epchar, QH_EPCHAR_RL); |
1039 |
if ((ehci->pid == USB_TOKEN_IN) && reload) {
|
1040 |
int nakcnt = get_field(qh->altnext_qtd, QH_ALTNEXT_NAKCNT);
|
1041 |
nakcnt--; |
1042 |
set_field(&qh->altnext_qtd, nakcnt, QH_ALTNEXT_NAKCNT); |
1043 |
} else if (!reload) { |
1044 |
return USB_RET_NAK;
|
1045 |
} |
1046 |
break;
|
1047 |
case USB_RET_BABBLE:
|
1048 |
fprintf(stderr, "USB babble TODO\n");
|
1049 |
qh->token |= QTD_TOKEN_BABBLE; |
1050 |
ehci_record_interrupt(ehci, USBSTS_ERRINT); |
1051 |
break;
|
1052 |
default:
|
1053 |
fprintf(stderr, "USB invalid response %d to handle\n", ret);
|
1054 |
/* TO-DO: transaction error */
|
1055 |
ret = USB_RET_PROCERR; |
1056 |
break;
|
1057 |
} |
1058 |
} else {
|
1059 |
// DPRINTF("Short packet condition\n");
|
1060 |
// TODO check 4.12 for splits
|
1061 |
|
1062 |
if ((ret > ehci->tbytes) && (ehci->pid == USB_TOKEN_IN)) {
|
1063 |
ret = USB_RET_BABBLE; |
1064 |
goto err;
|
1065 |
} |
1066 |
|
1067 |
if (ehci->tbytes && ehci->pid == USB_TOKEN_IN) {
|
1068 |
if (ehci_buffer_rw(ehci->buffer, qh, ret, 1) != 0) { |
1069 |
return USB_RET_PROCERR;
|
1070 |
} |
1071 |
ehci->tbytes -= ret; |
1072 |
} else {
|
1073 |
ehci->tbytes = 0;
|
1074 |
} |
1075 |
|
1076 |
DPRINTF("updating tbytes to %d\n", ehci->tbytes);
|
1077 |
set_field(&qh->token, ehci->tbytes, QTD_TOKEN_TBYTES); |
1078 |
} |
1079 |
|
1080 |
qh->token ^= QTD_TOKEN_DTOGGLE; |
1081 |
qh->token &= ~QTD_TOKEN_ACTIVE; |
1082 |
|
1083 |
if ((ret >= 0) && (qh->token & QTD_TOKEN_IOC)) { |
1084 |
ehci_record_interrupt(ehci, USBSTS_INT); |
1085 |
} |
1086 |
|
1087 |
return ret;
|
1088 |
} |
1089 |
|
1090 |
// 4.10.3
|
1091 |
|
1092 |
static int ehci_execute(EHCIState *ehci, EHCIqh *qh) |
1093 |
{ |
1094 |
USBPort *port; |
1095 |
USBDevice *dev; |
1096 |
int ret;
|
1097 |
int i;
|
1098 |
int endp;
|
1099 |
int devadr;
|
1100 |
|
1101 |
if ( !(qh->token & QTD_TOKEN_ACTIVE)) {
|
1102 |
fprintf(stderr, "Attempting to execute inactive QH\n");
|
1103 |
return USB_RET_PROCERR;
|
1104 |
} |
1105 |
|
1106 |
ehci->tbytes = (qh->token & QTD_TOKEN_TBYTES_MASK) >> QTD_TOKEN_TBYTES_SH; |
1107 |
if (ehci->tbytes > BUFF_SIZE) {
|
1108 |
fprintf(stderr, "Request for more bytes than allowed\n");
|
1109 |
return USB_RET_PROCERR;
|
1110 |
} |
1111 |
|
1112 |
ehci->pid = (qh->token & QTD_TOKEN_PID_MASK) >> QTD_TOKEN_PID_SH; |
1113 |
switch(ehci->pid) {
|
1114 |
case 0: ehci->pid = USB_TOKEN_OUT; break; |
1115 |
case 1: ehci->pid = USB_TOKEN_IN; break; |
1116 |
case 2: ehci->pid = USB_TOKEN_SETUP; break; |
1117 |
default: fprintf(stderr, "bad token\n"); break; |
1118 |
} |
1119 |
|
1120 |
if ((ehci->tbytes && ehci->pid != USB_TOKEN_IN) &&
|
1121 |
(ehci_buffer_rw(ehci->buffer, qh, ehci->tbytes, 0) != 0)) { |
1122 |
return USB_RET_PROCERR;
|
1123 |
} |
1124 |
|
1125 |
endp = get_field(qh->epchar, QH_EPCHAR_EP); |
1126 |
devadr = get_field(qh->epchar, QH_EPCHAR_DEVADDR); |
1127 |
|
1128 |
ret = USB_RET_NODEV; |
1129 |
|
1130 |
// TO-DO: associating device with ehci port
|
1131 |
for(i = 0; i < NB_PORTS; i++) { |
1132 |
port = &ehci->ports[i]; |
1133 |
dev = port->dev; |
1134 |
|
1135 |
// TODO sometime we will also need to check if we are the port owner
|
1136 |
|
1137 |
if (!(ehci->portsc[i] &(PORTSC_CONNECT))) {
|
1138 |
DPRINTF("Port %d, no exec, not connected(%08X)\n",
|
1139 |
i, ehci->portsc[i]); |
1140 |
continue;
|
1141 |
} |
1142 |
|
1143 |
ehci->usb_packet.pid = ehci->pid; |
1144 |
ehci->usb_packet.devaddr = devadr; |
1145 |
ehci->usb_packet.devep = endp; |
1146 |
ehci->usb_packet.data = ehci->buffer; |
1147 |
ehci->usb_packet.len = ehci->tbytes; |
1148 |
|
1149 |
ret = usb_handle_packet(dev, &ehci->usb_packet); |
1150 |
|
1151 |
DPRINTF("submit: qh %x next %x qtd %x pid %x len %d (total %d) endp %x ret %d\n",
|
1152 |
ehci->qhaddr, qh->next, ehci->qtdaddr, ehci->pid, |
1153 |
ehci->usb_packet.len, ehci->tbytes, endp, ret); |
1154 |
|
1155 |
if (ret != USB_RET_NODEV) {
|
1156 |
break;
|
1157 |
} |
1158 |
} |
1159 |
|
1160 |
if (ret > BUFF_SIZE) {
|
1161 |
fprintf(stderr, "ret from usb_handle_packet > BUFF_SIZE\n");
|
1162 |
return USB_RET_PROCERR;
|
1163 |
} |
1164 |
|
1165 |
if (ret == USB_RET_ASYNC) {
|
1166 |
ehci->async_complete = 0;
|
1167 |
} |
1168 |
|
1169 |
return ret;
|
1170 |
} |
1171 |
|
1172 |
/* 4.7.2
|
1173 |
*/
|
1174 |
|
1175 |
static int ehci_process_itd(EHCIState *ehci, |
1176 |
EHCIitd *itd) |
1177 |
{ |
1178 |
USBPort *port; |
1179 |
USBDevice *dev; |
1180 |
int ret;
|
1181 |
int i, j;
|
1182 |
int ptr;
|
1183 |
int pid;
|
1184 |
int pg;
|
1185 |
int len;
|
1186 |
int dir;
|
1187 |
int devadr;
|
1188 |
int endp;
|
1189 |
int maxpkt;
|
1190 |
|
1191 |
dir =(itd->bufptr[1] & ITD_BUFPTR_DIRECTION);
|
1192 |
devadr = get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR);
|
1193 |
endp = get_field(itd->bufptr[0], ITD_BUFPTR_EP);
|
1194 |
maxpkt = get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT);
|
1195 |
|
1196 |
for(i = 0; i < 8; i++) { |
1197 |
if (itd->transact[i] & ITD_XACT_ACTIVE) {
|
1198 |
DPRINTF("ISOCHRONOUS active for frame %d, interval %d\n",
|
1199 |
ehci->frindex >> 3, i);
|
1200 |
|
1201 |
pg = get_field(itd->transact[i], ITD_XACT_PGSEL); |
1202 |
ptr = (itd->bufptr[pg] & ITD_BUFPTR_MASK) | |
1203 |
(itd->transact[i] & ITD_XACT_OFFSET_MASK); |
1204 |
len = get_field(itd->transact[i], ITD_XACT_LENGTH); |
1205 |
|
1206 |
if (len > BUFF_SIZE) {
|
1207 |
return USB_RET_PROCERR;
|
1208 |
} |
1209 |
|
1210 |
DPRINTF("ISOCH: buffer %08X len %d\n", ptr, len);
|
1211 |
|
1212 |
if (!dir) {
|
1213 |
cpu_physical_memory_rw(ptr, &ehci->buffer[0], len, 0); |
1214 |
pid = USB_TOKEN_OUT; |
1215 |
} else
|
1216 |
pid = USB_TOKEN_IN; |
1217 |
|
1218 |
ret = USB_RET_NODEV; |
1219 |
|
1220 |
for (j = 0; j < NB_PORTS; j++) { |
1221 |
port = &ehci->ports[j]; |
1222 |
dev = port->dev; |
1223 |
|
1224 |
// TODO sometime we will also need to check if we are the port owner
|
1225 |
|
1226 |
if (!(ehci->portsc[j] &(PORTSC_CONNECT))) {
|
1227 |
DPRINTF("Port %d, no exec, not connected(%08X)\n",
|
1228 |
j, ehci->portsc[j]); |
1229 |
continue;
|
1230 |
} |
1231 |
|
1232 |
ehci->usb_packet.pid = ehci->pid; |
1233 |
ehci->usb_packet.devaddr = devadr; |
1234 |
ehci->usb_packet.devep = endp; |
1235 |
ehci->usb_packet.data = ehci->buffer; |
1236 |
ehci->usb_packet.len = len; |
1237 |
|
1238 |
DPRINTF("calling usb_handle_packet\n");
|
1239 |
ret = usb_handle_packet(dev, &ehci->usb_packet); |
1240 |
|
1241 |
if (ret != USB_RET_NODEV) {
|
1242 |
break;
|
1243 |
} |
1244 |
} |
1245 |
|
1246 |
/* In isoch, there is no facility to indicate a NAK so let's
|
1247 |
* instead just complete a zero-byte transaction. Setting
|
1248 |
* DBERR seems too draconian.
|
1249 |
*/
|
1250 |
|
1251 |
if (ret == USB_RET_NAK) {
|
1252 |
if (ehci->isoch_pause > 0) { |
1253 |
DPRINTF("ISOCH: received a NAK but paused so returning\n");
|
1254 |
ehci->isoch_pause--; |
1255 |
return 0; |
1256 |
} else if (ehci->isoch_pause == -1) { |
1257 |
DPRINTF("ISOCH: recv NAK & isoch pause inactive, setting\n");
|
1258 |
// Pause frindex for up to 50 msec waiting for data from
|
1259 |
// remote
|
1260 |
ehci->isoch_pause = 50;
|
1261 |
return 0; |
1262 |
} else {
|
1263 |
DPRINTF("ISOCH: isoch pause timeout! return 0\n");
|
1264 |
ret = 0;
|
1265 |
} |
1266 |
} else {
|
1267 |
DPRINTF("ISOCH: received ACK, clearing pause\n");
|
1268 |
ehci->isoch_pause = -1;
|
1269 |
} |
1270 |
|
1271 |
if (ret >= 0) { |
1272 |
itd->transact[i] &= ~ITD_XACT_ACTIVE; |
1273 |
|
1274 |
if (itd->transact[i] & ITD_XACT_IOC) {
|
1275 |
ehci_record_interrupt(ehci, USBSTS_INT); |
1276 |
} |
1277 |
} |
1278 |
|
1279 |
if (ret >= 0 && dir) { |
1280 |
cpu_physical_memory_rw(ptr, &ehci->buffer[0], len, 1); |
1281 |
|
1282 |
if (ret != len) {
|
1283 |
DPRINTF("ISOCH IN expected %d, got %d\n",
|
1284 |
len, ret); |
1285 |
set_field(&itd->transact[i], ret, ITD_XACT_LENGTH); |
1286 |
} |
1287 |
} |
1288 |
} |
1289 |
} |
1290 |
return 0; |
1291 |
} |
1292 |
|
1293 |
/* This state is the entry point for asynchronous schedule
|
1294 |
* processing. Entry here consitutes a EHCI start event state (4.8.5)
|
1295 |
*/
|
1296 |
static int ehci_state_waitlisthead(EHCIState *ehci, int async) |
1297 |
{ |
1298 |
EHCIqh *qh = &ehci->qh; |
1299 |
int i = 0; |
1300 |
int again = 0; |
1301 |
uint32_t entry = ehci->asynclistaddr; |
1302 |
|
1303 |
/* set reclamation flag at start event (4.8.6) */
|
1304 |
if (async) {
|
1305 |
ehci_set_usbsts(ehci, USBSTS_REC); |
1306 |
} |
1307 |
|
1308 |
/* Find the head of the list (4.9.1.1) */
|
1309 |
for(i = 0; i < MAX_QH; i++) { |
1310 |
get_dwords(NLPTR_GET(entry), (uint32_t *) qh, sizeof(EHCIqh) >> 2); |
1311 |
ehci_trace_qh(ehci, NLPTR_GET(entry), qh); |
1312 |
|
1313 |
if (qh->epchar & QH_EPCHAR_H) {
|
1314 |
if (async) {
|
1315 |
entry |= (NLPTR_TYPE_QH << 1);
|
1316 |
} |
1317 |
|
1318 |
ehci->fetch_addr = entry; |
1319 |
ehci_set_state(ehci, async, EST_FETCHENTRY); |
1320 |
again = 1;
|
1321 |
goto out;
|
1322 |
} |
1323 |
|
1324 |
entry = qh->next; |
1325 |
if (entry == ehci->asynclistaddr) {
|
1326 |
break;
|
1327 |
} |
1328 |
} |
1329 |
|
1330 |
/* no head found for list. */
|
1331 |
|
1332 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1333 |
|
1334 |
out:
|
1335 |
return again;
|
1336 |
} |
1337 |
|
1338 |
|
1339 |
/* This state is the entry point for periodic schedule processing as
|
1340 |
* well as being a continuation state for async processing.
|
1341 |
*/
|
1342 |
static int ehci_state_fetchentry(EHCIState *ehci, int async) |
1343 |
{ |
1344 |
int again = 0; |
1345 |
uint32_t entry = ehci->fetch_addr; |
1346 |
|
1347 |
#if EHCI_DEBUG == 0 |
1348 |
if (qemu_get_clock_ns(vm_clock) / 1000 >= ehci->frame_end_usec) { |
1349 |
if (async) {
|
1350 |
DPRINTF("FETCHENTRY: FRAME timer elapsed, exit state machine\n");
|
1351 |
goto out;
|
1352 |
} else {
|
1353 |
DPRINTF("FETCHENTRY: WARNING "
|
1354 |
"- frame timer elapsed during periodic\n");
|
1355 |
} |
1356 |
} |
1357 |
#endif
|
1358 |
if (entry < 0x1000) { |
1359 |
DPRINTF("fetchentry: entry invalid (0x%08x)\n", entry);
|
1360 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1361 |
goto out;
|
1362 |
} |
1363 |
|
1364 |
/* section 4.8, only QH in async schedule */
|
1365 |
if (async && (NLPTR_TYPE_GET(entry) != NLPTR_TYPE_QH)) {
|
1366 |
fprintf(stderr, "non queue head request in async schedule\n");
|
1367 |
return -1; |
1368 |
} |
1369 |
|
1370 |
switch (NLPTR_TYPE_GET(entry)) {
|
1371 |
case NLPTR_TYPE_QH:
|
1372 |
ehci_set_state(ehci, async, EST_FETCHQH); |
1373 |
ehci->qhaddr = entry; |
1374 |
again = 1;
|
1375 |
break;
|
1376 |
|
1377 |
case NLPTR_TYPE_ITD:
|
1378 |
ehci_set_state(ehci, async, EST_FETCHITD); |
1379 |
ehci->itdaddr = entry; |
1380 |
again = 1;
|
1381 |
break;
|
1382 |
|
1383 |
default:
|
1384 |
// TODO: handle siTD and FSTN types
|
1385 |
fprintf(stderr, "FETCHENTRY: entry at %X is of type %d "
|
1386 |
"which is not supported yet\n", entry, NLPTR_TYPE_GET(entry));
|
1387 |
return -1; |
1388 |
} |
1389 |
|
1390 |
out:
|
1391 |
return again;
|
1392 |
} |
1393 |
|
1394 |
static int ehci_state_fetchqh(EHCIState *ehci, int async) |
1395 |
{ |
1396 |
EHCIqh *qh = &ehci->qh; |
1397 |
int reload;
|
1398 |
int again = 0; |
1399 |
|
1400 |
get_dwords(NLPTR_GET(ehci->qhaddr), (uint32_t *) qh, sizeof(EHCIqh) >> 2); |
1401 |
ehci_trace_qh(ehci, NLPTR_GET(ehci->qhaddr), qh); |
1402 |
|
1403 |
if (async && (qh->epchar & QH_EPCHAR_H)) {
|
1404 |
|
1405 |
/* EHCI spec version 1.0 Section 4.8.3 & 4.10.1 */
|
1406 |
if (ehci->usbsts & USBSTS_REC) {
|
1407 |
ehci_clear_usbsts(ehci, USBSTS_REC); |
1408 |
} else {
|
1409 |
DPRINTF("FETCHQH: QH 0x%08x. H-bit set, reclamation status reset"
|
1410 |
" - done processing\n", ehci->qhaddr);
|
1411 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1412 |
goto out;
|
1413 |
} |
1414 |
} |
1415 |
|
1416 |
#if EHCI_DEBUG
|
1417 |
if (ehci->qhaddr != qh->next) {
|
1418 |
DPRINTF("FETCHQH: QH 0x%08x (h %x halt %x active %x) next 0x%08x\n",
|
1419 |
ehci->qhaddr, |
1420 |
qh->epchar & QH_EPCHAR_H, |
1421 |
qh->token & QTD_TOKEN_HALT, |
1422 |
qh->token & QTD_TOKEN_ACTIVE, |
1423 |
qh->next); |
1424 |
} |
1425 |
#endif
|
1426 |
|
1427 |
reload = get_field(qh->epchar, QH_EPCHAR_RL); |
1428 |
if (reload) {
|
1429 |
set_field(&qh->altnext_qtd, reload, QH_ALTNEXT_NAKCNT); |
1430 |
} |
1431 |
|
1432 |
if (qh->token & QTD_TOKEN_HALT) {
|
1433 |
ehci_set_state(ehci, async, EST_HORIZONTALQH); |
1434 |
again = 1;
|
1435 |
|
1436 |
} else if ((qh->token & QTD_TOKEN_ACTIVE) && (qh->current_qtd > 0x1000)) { |
1437 |
ehci->qtdaddr = qh->current_qtd; |
1438 |
ehci_set_state(ehci, async, EST_FETCHQTD); |
1439 |
again = 1;
|
1440 |
|
1441 |
} else {
|
1442 |
/* EHCI spec version 1.0 Section 4.10.2 */
|
1443 |
ehci_set_state(ehci, async, EST_ADVANCEQUEUE); |
1444 |
again = 1;
|
1445 |
} |
1446 |
|
1447 |
out:
|
1448 |
return again;
|
1449 |
} |
1450 |
|
1451 |
static int ehci_state_fetchitd(EHCIState *ehci, int async) |
1452 |
{ |
1453 |
EHCIitd itd; |
1454 |
|
1455 |
get_dwords(NLPTR_GET(ehci->itdaddr),(uint32_t *) &itd, |
1456 |
sizeof(EHCIitd) >> 2); |
1457 |
ehci_trace_itd(ehci, ehci->itdaddr, &itd); |
1458 |
|
1459 |
if (ehci_process_itd(ehci, &itd) != 0) { |
1460 |
return -1; |
1461 |
} |
1462 |
|
1463 |
put_dwords(NLPTR_GET(ehci->itdaddr), (uint32_t *) &itd, |
1464 |
sizeof(EHCIitd) >> 2); |
1465 |
ehci->fetch_addr = itd.next; |
1466 |
ehci_set_state(ehci, async, EST_FETCHENTRY); |
1467 |
|
1468 |
return 1; |
1469 |
} |
1470 |
|
1471 |
/* Section 4.10.2 - paragraph 3 */
|
1472 |
static int ehci_state_advqueue(EHCIState *ehci, int async) |
1473 |
{ |
1474 |
#if 0
|
1475 |
/* TO-DO: 4.10.2 - paragraph 2
|
1476 |
* if I-bit is set to 1 and QH is not active
|
1477 |
* go to horizontal QH
|
1478 |
*/
|
1479 |
if (I-bit set) {
|
1480 |
ehci_set_state(ehci, async, EST_HORIZONTALQH);
|
1481 |
goto out;
|
1482 |
}
|
1483 |
#endif
|
1484 |
|
1485 |
/*
|
1486 |
* want data and alt-next qTD is valid
|
1487 |
*/
|
1488 |
if (((ehci->qh.token & QTD_TOKEN_TBYTES_MASK) != 0) && |
1489 |
(ehci->qh.altnext_qtd > 0x1000) &&
|
1490 |
(NLPTR_TBIT(ehci->qh.altnext_qtd) == 0)) {
|
1491 |
ehci->qtdaddr = ehci->qh.altnext_qtd; |
1492 |
ehci_set_state(ehci, async, EST_FETCHQTD); |
1493 |
|
1494 |
/*
|
1495 |
* next qTD is valid
|
1496 |
*/
|
1497 |
} else if ((ehci->qh.next_qtd > 0x1000) && |
1498 |
(NLPTR_TBIT(ehci->qh.next_qtd) == 0)) {
|
1499 |
ehci->qtdaddr = ehci->qh.next_qtd; |
1500 |
ehci_set_state(ehci, async, EST_FETCHQTD); |
1501 |
|
1502 |
/*
|
1503 |
* no valid qTD, try next QH
|
1504 |
*/
|
1505 |
} else {
|
1506 |
ehci_set_state(ehci, async, EST_HORIZONTALQH); |
1507 |
} |
1508 |
|
1509 |
return 1; |
1510 |
} |
1511 |
|
1512 |
/* Section 4.10.2 - paragraph 4 */
|
1513 |
static int ehci_state_fetchqtd(EHCIState *ehci, int async) |
1514 |
{ |
1515 |
EHCIqtd *qtd = &ehci->qtd; |
1516 |
int again = 0; |
1517 |
|
1518 |
get_dwords(NLPTR_GET(ehci->qtdaddr),(uint32_t *) qtd, sizeof(EHCIqtd) >> 2); |
1519 |
ehci_trace_qtd(ehci, NLPTR_GET(ehci->qtdaddr), qtd); |
1520 |
|
1521 |
if (qtd->token & QTD_TOKEN_ACTIVE) {
|
1522 |
ehci_set_state(ehci, async, EST_EXECUTE); |
1523 |
again = 1;
|
1524 |
} else {
|
1525 |
ehci_set_state(ehci, async, EST_HORIZONTALQH); |
1526 |
again = 1;
|
1527 |
} |
1528 |
|
1529 |
return again;
|
1530 |
} |
1531 |
|
1532 |
static int ehci_state_horizqh(EHCIState *ehci, int async) |
1533 |
{ |
1534 |
int again = 0; |
1535 |
|
1536 |
if (ehci->fetch_addr != ehci->qh.next) {
|
1537 |
ehci->fetch_addr = ehci->qh.next; |
1538 |
ehci_set_state(ehci, async, EST_FETCHENTRY); |
1539 |
again = 1;
|
1540 |
} else {
|
1541 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1542 |
} |
1543 |
|
1544 |
return again;
|
1545 |
} |
1546 |
|
1547 |
static int ehci_state_execute(EHCIState *ehci, int async) |
1548 |
{ |
1549 |
EHCIqh *qh = &ehci->qh; |
1550 |
EHCIqtd *qtd = &ehci->qtd; |
1551 |
int again = 0; |
1552 |
int reload, nakcnt;
|
1553 |
int smask;
|
1554 |
|
1555 |
if (ehci_qh_do_overlay(ehci, qh, qtd) != 0) { |
1556 |
return -1; |
1557 |
} |
1558 |
|
1559 |
smask = get_field(qh->epcap, QH_EPCAP_SMASK); |
1560 |
|
1561 |
if (!smask) {
|
1562 |
reload = get_field(qh->epchar, QH_EPCHAR_RL); |
1563 |
nakcnt = get_field(qh->altnext_qtd, QH_ALTNEXT_NAKCNT); |
1564 |
if (reload && !nakcnt) {
|
1565 |
ehci_set_state(ehci, async, EST_HORIZONTALQH); |
1566 |
again = 1;
|
1567 |
goto out;
|
1568 |
} |
1569 |
} |
1570 |
|
1571 |
// TODO verify enough time remains in the uframe as in 4.4.1.1
|
1572 |
// TODO write back ptr to async list when done or out of time
|
1573 |
// TODO Windows does not seem to ever set the MULT field
|
1574 |
|
1575 |
if (!async) {
|
1576 |
int transactCtr = get_field(qh->epcap, QH_EPCAP_MULT);
|
1577 |
if (!transactCtr) {
|
1578 |
ehci_set_state(ehci, async, EST_HORIZONTALQH); |
1579 |
again = 1;
|
1580 |
goto out;
|
1581 |
} |
1582 |
} |
1583 |
|
1584 |
if (async) {
|
1585 |
ehci_set_usbsts(ehci, USBSTS_REC); |
1586 |
} |
1587 |
|
1588 |
ehci->exec_status = ehci_execute(ehci, qh); |
1589 |
if (ehci->exec_status == USB_RET_PROCERR) {
|
1590 |
again = -1;
|
1591 |
goto out;
|
1592 |
} |
1593 |
ehci_set_state(ehci, async, EST_EXECUTING); |
1594 |
|
1595 |
if (ehci->exec_status != USB_RET_ASYNC) {
|
1596 |
again = 1;
|
1597 |
} |
1598 |
|
1599 |
out:
|
1600 |
return again;
|
1601 |
} |
1602 |
|
1603 |
static int ehci_state_executing(EHCIState *ehci, int async) |
1604 |
{ |
1605 |
EHCIqh *qh = &ehci->qh; |
1606 |
int again = 0; |
1607 |
int reload, nakcnt;
|
1608 |
|
1609 |
ehci->exec_status = ehci_execute_complete(ehci, qh, ehci->exec_status); |
1610 |
if (ehci->exec_status == USB_RET_ASYNC) {
|
1611 |
goto out;
|
1612 |
} |
1613 |
if (ehci->exec_status == USB_RET_PROCERR) {
|
1614 |
again = -1;
|
1615 |
goto out;
|
1616 |
} |
1617 |
|
1618 |
// 4.10.3
|
1619 |
if (!async) {
|
1620 |
int transactCtr = get_field(qh->epcap, QH_EPCAP_MULT);
|
1621 |
transactCtr--; |
1622 |
set_field(&qh->epcap, transactCtr, QH_EPCAP_MULT); |
1623 |
// 4.10.3, bottom of page 82, should exit this state when transaction
|
1624 |
// counter decrements to 0
|
1625 |
} |
1626 |
|
1627 |
|
1628 |
reload = get_field(qh->epchar, QH_EPCHAR_RL); |
1629 |
if (reload) {
|
1630 |
nakcnt = get_field(qh->altnext_qtd, QH_ALTNEXT_NAKCNT); |
1631 |
if (ehci->exec_status == USB_RET_NAK) {
|
1632 |
if (nakcnt) {
|
1633 |
nakcnt--; |
1634 |
} |
1635 |
} else {
|
1636 |
nakcnt = reload; |
1637 |
} |
1638 |
set_field(&qh->altnext_qtd, nakcnt, QH_ALTNEXT_NAKCNT); |
1639 |
} |
1640 |
|
1641 |
/*
|
1642 |
* Write the qh back to guest physical memory. This step isn't
|
1643 |
* in the EHCI spec but we need to do it since we don't share
|
1644 |
* physical memory with our guest VM.
|
1645 |
*/
|
1646 |
put_dwords(NLPTR_GET(ehci->qhaddr), (uint32_t *) qh, sizeof(EHCIqh) >> 2); |
1647 |
|
1648 |
/* 4.10.5 */
|
1649 |
if ((ehci->exec_status == USB_RET_NAK) || (qh->token & QTD_TOKEN_ACTIVE)) {
|
1650 |
ehci_set_state(ehci, async, EST_HORIZONTALQH); |
1651 |
} else {
|
1652 |
ehci_set_state(ehci, async, EST_WRITEBACK); |
1653 |
} |
1654 |
|
1655 |
again = 1;
|
1656 |
|
1657 |
out:
|
1658 |
return again;
|
1659 |
} |
1660 |
|
1661 |
|
1662 |
static int ehci_state_writeback(EHCIState *ehci, int async) |
1663 |
{ |
1664 |
EHCIqh *qh = &ehci->qh; |
1665 |
int again = 0; |
1666 |
|
1667 |
/* Write back the QTD from the QH area */
|
1668 |
ehci_trace_qtd(ehci, NLPTR_GET(ehci->qtdaddr), (EHCIqtd*) &qh->next_qtd); |
1669 |
put_dwords(NLPTR_GET(ehci->qtdaddr),(uint32_t *) &qh->next_qtd, |
1670 |
sizeof(EHCIqtd) >> 2); |
1671 |
|
1672 |
/* TODO confirm next state. For now, keep going if async
|
1673 |
* but stop after one qtd if periodic
|
1674 |
*/
|
1675 |
//if (async) {
|
1676 |
ehci_set_state(ehci, async, EST_ADVANCEQUEUE); |
1677 |
again = 1;
|
1678 |
//} else {
|
1679 |
// ehci_set_state(ehci, async, EST_ACTIVE);
|
1680 |
//}
|
1681 |
return again;
|
1682 |
} |
1683 |
|
1684 |
/*
|
1685 |
* This is the state machine that is common to both async and periodic
|
1686 |
*/
|
1687 |
|
1688 |
static void ehci_advance_state(EHCIState *ehci, |
1689 |
int async)
|
1690 |
{ |
1691 |
int again;
|
1692 |
int iter = 0; |
1693 |
|
1694 |
do {
|
1695 |
if (ehci_get_state(ehci, async) == EST_FETCHQH) {
|
1696 |
iter++; |
1697 |
/* if we are roaming a lot of QH without executing a qTD
|
1698 |
* something is wrong with the linked list. TO-DO: why is
|
1699 |
* this hack needed?
|
1700 |
*/
|
1701 |
if (iter > MAX_ITERATIONS) {
|
1702 |
DPRINTF("\n*** advance_state: bailing on MAX ITERATIONS***\n");
|
1703 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1704 |
break;
|
1705 |
} |
1706 |
} |
1707 |
switch(ehci_get_state(ehci, async)) {
|
1708 |
case EST_WAITLISTHEAD:
|
1709 |
again = ehci_state_waitlisthead(ehci, async); |
1710 |
break;
|
1711 |
|
1712 |
case EST_FETCHENTRY:
|
1713 |
again = ehci_state_fetchentry(ehci, async); |
1714 |
break;
|
1715 |
|
1716 |
case EST_FETCHQH:
|
1717 |
again = ehci_state_fetchqh(ehci, async); |
1718 |
break;
|
1719 |
|
1720 |
case EST_FETCHITD:
|
1721 |
again = ehci_state_fetchitd(ehci, async); |
1722 |
break;
|
1723 |
|
1724 |
case EST_ADVANCEQUEUE:
|
1725 |
again = ehci_state_advqueue(ehci, async); |
1726 |
break;
|
1727 |
|
1728 |
case EST_FETCHQTD:
|
1729 |
again = ehci_state_fetchqtd(ehci, async); |
1730 |
break;
|
1731 |
|
1732 |
case EST_HORIZONTALQH:
|
1733 |
again = ehci_state_horizqh(ehci, async); |
1734 |
break;
|
1735 |
|
1736 |
case EST_EXECUTE:
|
1737 |
iter = 0;
|
1738 |
again = ehci_state_execute(ehci, async); |
1739 |
break;
|
1740 |
|
1741 |
case EST_EXECUTING:
|
1742 |
again = ehci_state_executing(ehci, async); |
1743 |
break;
|
1744 |
|
1745 |
case EST_WRITEBACK:
|
1746 |
again = ehci_state_writeback(ehci, async); |
1747 |
break;
|
1748 |
|
1749 |
default:
|
1750 |
fprintf(stderr, "Bad state!\n");
|
1751 |
again = -1;
|
1752 |
break;
|
1753 |
} |
1754 |
|
1755 |
if (again < 0) { |
1756 |
fprintf(stderr, "processing error - resetting ehci HC\n");
|
1757 |
ehci_reset(ehci); |
1758 |
again = 0;
|
1759 |
} |
1760 |
} |
1761 |
while (again);
|
1762 |
|
1763 |
ehci_commit_interrupt(ehci); |
1764 |
} |
1765 |
|
1766 |
static void ehci_advance_async_state(EHCIState *ehci) |
1767 |
{ |
1768 |
EHCIqh qh; |
1769 |
int async = 1; |
1770 |
|
1771 |
switch(ehci_get_state(ehci, async)) {
|
1772 |
case EST_INACTIVE:
|
1773 |
if (!(ehci->usbcmd & USBCMD_ASE)) {
|
1774 |
break;
|
1775 |
} |
1776 |
ehci_set_usbsts(ehci, USBSTS_ASS); |
1777 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1778 |
// No break, fall through to ACTIVE
|
1779 |
|
1780 |
case EST_ACTIVE:
|
1781 |
if ( !(ehci->usbcmd & USBCMD_ASE)) {
|
1782 |
ehci_clear_usbsts(ehci, USBSTS_ASS); |
1783 |
ehci_set_state(ehci, async, EST_INACTIVE); |
1784 |
break;
|
1785 |
} |
1786 |
|
1787 |
/* If the doorbell is set, the guest wants to make a change to the
|
1788 |
* schedule. The host controller needs to release cached data.
|
1789 |
* (section 4.8.2)
|
1790 |
*/
|
1791 |
if (ehci->usbcmd & USBCMD_IAAD) {
|
1792 |
DPRINTF("ASYNC: doorbell request acknowledged\n");
|
1793 |
ehci->usbcmd &= ~USBCMD_IAAD; |
1794 |
ehci_set_interrupt(ehci, USBSTS_IAA); |
1795 |
break;
|
1796 |
} |
1797 |
|
1798 |
/* make sure guest has acknowledged */
|
1799 |
/* TO-DO: is this really needed? */
|
1800 |
if (ehci->usbsts & USBSTS_IAA) {
|
1801 |
DPRINTF("IAA status bit still set.\n");
|
1802 |
break;
|
1803 |
} |
1804 |
|
1805 |
/* check that address register has been set */
|
1806 |
if (ehci->asynclistaddr == 0) { |
1807 |
break;
|
1808 |
} |
1809 |
|
1810 |
ehci_set_state(ehci, async, EST_WAITLISTHEAD); |
1811 |
/* fall through */
|
1812 |
|
1813 |
case EST_FETCHENTRY:
|
1814 |
/* fall through */
|
1815 |
|
1816 |
case EST_EXECUTING:
|
1817 |
get_dwords(NLPTR_GET(ehci->qhaddr), (uint32_t *) &qh, |
1818 |
sizeof(EHCIqh) >> 2); |
1819 |
ehci_advance_state(ehci, async); |
1820 |
break;
|
1821 |
|
1822 |
default:
|
1823 |
/* this should only be due to a developer mistake */
|
1824 |
fprintf(stderr, "ehci: Bad asynchronous state %d. "
|
1825 |
"Resetting to active\n", ehci->astate);
|
1826 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1827 |
} |
1828 |
} |
1829 |
|
1830 |
static void ehci_advance_periodic_state(EHCIState *ehci) |
1831 |
{ |
1832 |
uint32_t entry; |
1833 |
uint32_t list; |
1834 |
int async = 0; |
1835 |
|
1836 |
// 4.6
|
1837 |
|
1838 |
switch(ehci_get_state(ehci, async)) {
|
1839 |
case EST_INACTIVE:
|
1840 |
if ( !(ehci->frindex & 7) && (ehci->usbcmd & USBCMD_PSE)) { |
1841 |
ehci_set_usbsts(ehci, USBSTS_PSS); |
1842 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1843 |
// No break, fall through to ACTIVE
|
1844 |
} else
|
1845 |
break;
|
1846 |
|
1847 |
case EST_ACTIVE:
|
1848 |
if ( !(ehci->frindex & 7) && !(ehci->usbcmd & USBCMD_PSE)) { |
1849 |
ehci_clear_usbsts(ehci, USBSTS_PSS); |
1850 |
ehci_set_state(ehci, async, EST_INACTIVE); |
1851 |
break;
|
1852 |
} |
1853 |
|
1854 |
list = ehci->periodiclistbase & 0xfffff000;
|
1855 |
/* check that register has been set */
|
1856 |
if (list == 0) { |
1857 |
break;
|
1858 |
} |
1859 |
list |= ((ehci->frindex & 0x1ff8) >> 1); |
1860 |
|
1861 |
cpu_physical_memory_rw(list, (uint8_t *) &entry, sizeof entry, 0); |
1862 |
entry = le32_to_cpu(entry); |
1863 |
|
1864 |
DPRINTF("PERIODIC state adv fr=%d. [%08X] -> %08X\n",
|
1865 |
ehci->frindex / 8, list, entry);
|
1866 |
ehci->fetch_addr = entry; |
1867 |
ehci_set_state(ehci, async, EST_FETCHENTRY); |
1868 |
ehci_advance_state(ehci, async); |
1869 |
break;
|
1870 |
|
1871 |
case EST_EXECUTING:
|
1872 |
DPRINTF("PERIODIC state adv for executing\n");
|
1873 |
ehci_advance_state(ehci, async); |
1874 |
break;
|
1875 |
|
1876 |
default:
|
1877 |
/* this should only be due to a developer mistake */
|
1878 |
fprintf(stderr, "ehci: Bad periodic state %d. "
|
1879 |
"Resetting to active\n", ehci->pstate);
|
1880 |
ehci_set_state(ehci, async, EST_ACTIVE); |
1881 |
} |
1882 |
} |
1883 |
|
1884 |
static void ehci_frame_timer(void *opaque) |
1885 |
{ |
1886 |
EHCIState *ehci = opaque; |
1887 |
int64_t expire_time, t_now; |
1888 |
int usec_elapsed;
|
1889 |
int frames;
|
1890 |
int usec_now;
|
1891 |
int i;
|
1892 |
int skipped_frames = 0; |
1893 |
|
1894 |
|
1895 |
t_now = qemu_get_clock_ns(vm_clock); |
1896 |
expire_time = t_now + (get_ticks_per_sec() / FRAME_TIMER_FREQ); |
1897 |
if (expire_time == t_now) {
|
1898 |
expire_time++; |
1899 |
} |
1900 |
|
1901 |
usec_now = t_now / 1000;
|
1902 |
usec_elapsed = usec_now - ehci->last_run_usec; |
1903 |
frames = usec_elapsed / FRAME_TIMER_USEC; |
1904 |
ehci->frame_end_usec = usec_now + FRAME_TIMER_USEC - 10;
|
1905 |
|
1906 |
for (i = 0; i < frames; i++) { |
1907 |
if ( !(ehci->usbsts & USBSTS_HALT)) {
|
1908 |
if (ehci->isoch_pause <= 0) { |
1909 |
ehci->frindex += 8;
|
1910 |
} |
1911 |
|
1912 |
if (ehci->frindex > 0x00001fff) { |
1913 |
ehci->frindex = 0;
|
1914 |
ehci_set_interrupt(ehci, USBSTS_FLR); |
1915 |
} |
1916 |
|
1917 |
ehci->sofv = (ehci->frindex - 1) >> 3; |
1918 |
ehci->sofv &= 0x000003ff;
|
1919 |
} |
1920 |
|
1921 |
if (frames - i > 10) { |
1922 |
skipped_frames++; |
1923 |
} else {
|
1924 |
// TODO could this cause periodic frames to get skipped if async
|
1925 |
// active?
|
1926 |
if (ehci_get_state(ehci, 1) != EST_EXECUTING) { |
1927 |
ehci_advance_periodic_state(ehci); |
1928 |
} |
1929 |
} |
1930 |
|
1931 |
ehci->last_run_usec += FRAME_TIMER_USEC; |
1932 |
} |
1933 |
|
1934 |
#if 0
|
1935 |
if (skipped_frames) {
|
1936 |
DPRINTF("WARNING - EHCI skipped %d frames\n", skipped_frames);
|
1937 |
}
|
1938 |
#endif
|
1939 |
|
1940 |
/* Async is not inside loop since it executes everything it can once
|
1941 |
* called
|
1942 |
*/
|
1943 |
if (ehci_get_state(ehci, 0) != EST_EXECUTING) { |
1944 |
ehci_advance_async_state(ehci); |
1945 |
} |
1946 |
|
1947 |
qemu_mod_timer(ehci->frame_timer, expire_time); |
1948 |
} |
1949 |
|
1950 |
static CPUReadMemoryFunc *ehci_readfn[3]={ |
1951 |
ehci_mem_readb, |
1952 |
ehci_mem_readw, |
1953 |
ehci_mem_readl |
1954 |
}; |
1955 |
|
1956 |
static CPUWriteMemoryFunc *ehci_writefn[3]={ |
1957 |
ehci_mem_writeb, |
1958 |
ehci_mem_writew, |
1959 |
ehci_mem_writel |
1960 |
}; |
1961 |
|
1962 |
static void ehci_map(PCIDevice *pci_dev, int region_num, |
1963 |
pcibus_t addr, pcibus_t size, int type)
|
1964 |
{ |
1965 |
EHCIState *s =(EHCIState *)pci_dev; |
1966 |
|
1967 |
DPRINTF("ehci_map: region %d, addr %08" PRIx64 ", size %" PRId64 ", s->mem %08X\n", |
1968 |
region_num, addr, size, s->mem); |
1969 |
s->mem_base = addr; |
1970 |
cpu_register_physical_memory(addr, size, s->mem); |
1971 |
} |
1972 |
|
1973 |
static int usb_ehci_initfn(PCIDevice *dev); |
1974 |
|
1975 |
static USBPortOps ehci_port_ops = {
|
1976 |
.attach = ehci_attach, |
1977 |
.detach = ehci_detach, |
1978 |
.complete = ehci_async_complete_packet, |
1979 |
}; |
1980 |
|
1981 |
static PCIDeviceInfo ehci_info = {
|
1982 |
.qdev.name = "usb-ehci",
|
1983 |
.qdev.size = sizeof(EHCIState),
|
1984 |
.init = usb_ehci_initfn, |
1985 |
}; |
1986 |
|
1987 |
static int usb_ehci_initfn(PCIDevice *dev) |
1988 |
{ |
1989 |
EHCIState *s = DO_UPCAST(EHCIState, dev, dev); |
1990 |
uint8_t *pci_conf = s->dev.config; |
1991 |
int i;
|
1992 |
|
1993 |
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL); |
1994 |
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82801D); |
1995 |
pci_set_byte(&pci_conf[PCI_REVISION_ID], 0x10);
|
1996 |
pci_set_byte(&pci_conf[PCI_CLASS_PROG], 0x20);
|
1997 |
pci_config_set_class(pci_conf, PCI_CLASS_SERIAL_USB); |
1998 |
pci_set_byte(&pci_conf[PCI_HEADER_TYPE], PCI_HEADER_TYPE_NORMAL); |
1999 |
|
2000 |
/* capabilities pointer */
|
2001 |
pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x00);
|
2002 |
//pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x50);
|
2003 |
|
2004 |
pci_set_byte(&pci_conf[PCI_INTERRUPT_PIN], 4); // interrupt pin 3 |
2005 |
pci_set_byte(&pci_conf[PCI_MIN_GNT], 0);
|
2006 |
pci_set_byte(&pci_conf[PCI_MAX_LAT], 0);
|
2007 |
|
2008 |
// pci_conf[0x50] = 0x01; // power management caps
|
2009 |
|
2010 |
pci_set_byte(&pci_conf[0x60], 0x20); // spec release number (2.1.4) |
2011 |
pci_set_byte(&pci_conf[0x61], 0x20); // frame length adjustment (2.1.5) |
2012 |
pci_set_word(&pci_conf[0x62], 0x00); // port wake up capability (2.1.6) |
2013 |
|
2014 |
pci_conf[0x64] = 0x00; |
2015 |
pci_conf[0x65] = 0x00; |
2016 |
pci_conf[0x66] = 0x00; |
2017 |
pci_conf[0x67] = 0x00; |
2018 |
pci_conf[0x68] = 0x01; |
2019 |
pci_conf[0x69] = 0x00; |
2020 |
pci_conf[0x6a] = 0x00; |
2021 |
pci_conf[0x6b] = 0x00; // USBLEGSUP |
2022 |
pci_conf[0x6c] = 0x00; |
2023 |
pci_conf[0x6d] = 0x00; |
2024 |
pci_conf[0x6e] = 0x00; |
2025 |
pci_conf[0x6f] = 0xc0; // USBLEFCTLSTS |
2026 |
|
2027 |
// 2.2 host controller interface version
|
2028 |
s->mmio[0x00] = (uint8_t) OPREGBASE;
|
2029 |
s->mmio[0x01] = 0x00; |
2030 |
s->mmio[0x02] = 0x00; |
2031 |
s->mmio[0x03] = 0x01; // HC version |
2032 |
s->mmio[0x04] = NB_PORTS; // Number of downstream ports |
2033 |
s->mmio[0x05] = 0x00; // No companion ports at present |
2034 |
s->mmio[0x06] = 0x00; |
2035 |
s->mmio[0x07] = 0x00; |
2036 |
s->mmio[0x08] = 0x80; // We can cache whole frame, not 64-bit capable |
2037 |
s->mmio[0x09] = 0x68; // EECP |
2038 |
s->mmio[0x0a] = 0x00; |
2039 |
s->mmio[0x0b] = 0x00; |
2040 |
|
2041 |
s->irq = s->dev.irq[3];
|
2042 |
|
2043 |
usb_bus_new(&s->bus, &s->dev.qdev); |
2044 |
for(i = 0; i < NB_PORTS; i++) { |
2045 |
usb_register_port(&s->bus, &s->ports[i], s, i, &ehci_port_ops, |
2046 |
USB_SPEED_MASK_HIGH); |
2047 |
usb_port_location(&s->ports[i], NULL, i+1); |
2048 |
s->ports[i].dev = 0;
|
2049 |
} |
2050 |
|
2051 |
s->frame_timer = qemu_new_timer_ns(vm_clock, ehci_frame_timer, s); |
2052 |
|
2053 |
qemu_register_reset(ehci_reset, s); |
2054 |
|
2055 |
s->mem = cpu_register_io_memory(ehci_readfn, ehci_writefn, s, |
2056 |
DEVICE_LITTLE_ENDIAN); |
2057 |
|
2058 |
pci_register_bar(&s->dev, 0, MMIO_SIZE, PCI_BASE_ADDRESS_SPACE_MEMORY,
|
2059 |
ehci_map); |
2060 |
|
2061 |
fprintf(stderr, "*** EHCI support is under development ***\n");
|
2062 |
|
2063 |
return 0; |
2064 |
} |
2065 |
|
2066 |
static void ehci_register(void) |
2067 |
{ |
2068 |
pci_qdev_register(&ehci_info); |
2069 |
} |
2070 |
device_init(ehci_register); |
2071 |
|
2072 |
/*
|
2073 |
* vim: expandtab ts=4
|
2074 |
*/
|