1be90ebecc
While servicing OHCI transfer descriptors(TD), ohci_service_iso_td retires a TD if it has passed its time frame. It does not check if the TD was already processed once and holds an error code in TD_CC. It may happen if the TD list has a loop. Add check to avoid an infinite loop condition. Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> Reviewed-by: Li Qiang <liq3ea@gmail.com> Message-id: 20200915182259.68522-3-ppandit@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2029 lines
58 KiB
C
2029 lines
58 KiB
C
/*
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* QEMU USB OHCI Emulation
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* Copyright (c) 2004 Gianni Tedesco
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* Copyright (c) 2006 CodeSourcery
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* Copyright (c) 2006 Openedhand Ltd.
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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 Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* TODO:
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* o Isochronous transfers
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* o Allocate bandwidth in frames properly
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* o Disable timers when nothing needs to be done, or remove timer usage
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* all together.
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* o BIOS work to boot from USB storage
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*/
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#include "qemu/osdep.h"
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#include "hw/irq.h"
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#include "qapi/error.h"
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#include "qemu/module.h"
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#include "qemu/timer.h"
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#include "hw/usb.h"
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#include "migration/vmstate.h"
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#include "hw/sysbus.h"
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#include "hw/qdev-dma.h"
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#include "hw/qdev-properties.h"
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#include "trace.h"
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#include "hcd-ohci.h"
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/* This causes frames to occur 1000x slower */
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//#define OHCI_TIME_WARP 1
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#define ED_LINK_LIMIT 32
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static int64_t usb_frame_time;
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static int64_t usb_bit_time;
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/* Host Controller Communications Area */
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struct ohci_hcca {
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uint32_t intr[32];
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uint16_t frame, pad;
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uint32_t done;
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};
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#define HCCA_WRITEBACK_OFFSET offsetof(struct ohci_hcca, frame)
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#define HCCA_WRITEBACK_SIZE 8 /* frame, pad, done */
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#define ED_WBACK_OFFSET offsetof(struct ohci_ed, head)
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#define ED_WBACK_SIZE 4
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static void ohci_async_cancel_device(OHCIState *ohci, USBDevice *dev);
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/* Bitfields for the first word of an Endpoint Desciptor. */
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#define OHCI_ED_FA_SHIFT 0
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#define OHCI_ED_FA_MASK (0x7f<<OHCI_ED_FA_SHIFT)
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#define OHCI_ED_EN_SHIFT 7
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#define OHCI_ED_EN_MASK (0xf<<OHCI_ED_EN_SHIFT)
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#define OHCI_ED_D_SHIFT 11
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#define OHCI_ED_D_MASK (3<<OHCI_ED_D_SHIFT)
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#define OHCI_ED_S (1<<13)
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#define OHCI_ED_K (1<<14)
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#define OHCI_ED_F (1<<15)
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#define OHCI_ED_MPS_SHIFT 16
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#define OHCI_ED_MPS_MASK (0x7ff<<OHCI_ED_MPS_SHIFT)
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/* Flags in the head field of an Endpoint Desciptor. */
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#define OHCI_ED_H 1
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#define OHCI_ED_C 2
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/* Bitfields for the first word of a Transfer Desciptor. */
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#define OHCI_TD_R (1<<18)
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#define OHCI_TD_DP_SHIFT 19
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#define OHCI_TD_DP_MASK (3<<OHCI_TD_DP_SHIFT)
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#define OHCI_TD_DI_SHIFT 21
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#define OHCI_TD_DI_MASK (7<<OHCI_TD_DI_SHIFT)
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#define OHCI_TD_T0 (1<<24)
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#define OHCI_TD_T1 (1<<25)
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#define OHCI_TD_EC_SHIFT 26
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#define OHCI_TD_EC_MASK (3<<OHCI_TD_EC_SHIFT)
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#define OHCI_TD_CC_SHIFT 28
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#define OHCI_TD_CC_MASK (0xf<<OHCI_TD_CC_SHIFT)
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/* Bitfields for the first word of an Isochronous Transfer Desciptor. */
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/* CC & DI - same as in the General Transfer Desciptor */
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#define OHCI_TD_SF_SHIFT 0
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#define OHCI_TD_SF_MASK (0xffff<<OHCI_TD_SF_SHIFT)
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#define OHCI_TD_FC_SHIFT 24
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#define OHCI_TD_FC_MASK (7<<OHCI_TD_FC_SHIFT)
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/* Isochronous Transfer Desciptor - Offset / PacketStatusWord */
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#define OHCI_TD_PSW_CC_SHIFT 12
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#define OHCI_TD_PSW_CC_MASK (0xf<<OHCI_TD_PSW_CC_SHIFT)
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#define OHCI_TD_PSW_SIZE_SHIFT 0
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#define OHCI_TD_PSW_SIZE_MASK (0xfff<<OHCI_TD_PSW_SIZE_SHIFT)
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#define OHCI_PAGE_MASK 0xfffff000
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#define OHCI_OFFSET_MASK 0xfff
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#define OHCI_DPTR_MASK 0xfffffff0
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#define OHCI_BM(val, field) \
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(((val) & OHCI_##field##_MASK) >> OHCI_##field##_SHIFT)
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#define OHCI_SET_BM(val, field, newval) do { \
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val &= ~OHCI_##field##_MASK; \
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val |= ((newval) << OHCI_##field##_SHIFT) & OHCI_##field##_MASK; \
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} while(0)
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/* endpoint descriptor */
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struct ohci_ed {
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uint32_t flags;
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uint32_t tail;
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uint32_t head;
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uint32_t next;
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};
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/* General transfer descriptor */
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struct ohci_td {
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uint32_t flags;
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uint32_t cbp;
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uint32_t next;
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uint32_t be;
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};
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/* Isochronous transfer descriptor */
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struct ohci_iso_td {
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uint32_t flags;
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uint32_t bp;
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uint32_t next;
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uint32_t be;
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uint16_t offset[8];
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};
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#define USB_HZ 12000000
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/* OHCI Local stuff */
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#define OHCI_CTL_CBSR ((1<<0)|(1<<1))
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#define OHCI_CTL_PLE (1<<2)
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#define OHCI_CTL_IE (1<<3)
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#define OHCI_CTL_CLE (1<<4)
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#define OHCI_CTL_BLE (1<<5)
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#define OHCI_CTL_HCFS ((1<<6)|(1<<7))
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#define OHCI_USB_RESET 0x00
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#define OHCI_USB_RESUME 0x40
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#define OHCI_USB_OPERATIONAL 0x80
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#define OHCI_USB_SUSPEND 0xc0
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#define OHCI_CTL_IR (1<<8)
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#define OHCI_CTL_RWC (1<<9)
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#define OHCI_CTL_RWE (1<<10)
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#define OHCI_STATUS_HCR (1<<0)
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#define OHCI_STATUS_CLF (1<<1)
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#define OHCI_STATUS_BLF (1<<2)
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#define OHCI_STATUS_OCR (1<<3)
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#define OHCI_STATUS_SOC ((1<<6)|(1<<7))
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#define OHCI_INTR_SO (1U<<0) /* Scheduling overrun */
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#define OHCI_INTR_WD (1U<<1) /* HcDoneHead writeback */
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#define OHCI_INTR_SF (1U<<2) /* Start of frame */
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#define OHCI_INTR_RD (1U<<3) /* Resume detect */
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#define OHCI_INTR_UE (1U<<4) /* Unrecoverable error */
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#define OHCI_INTR_FNO (1U<<5) /* Frame number overflow */
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#define OHCI_INTR_RHSC (1U<<6) /* Root hub status change */
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#define OHCI_INTR_OC (1U<<30) /* Ownership change */
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#define OHCI_INTR_MIE (1U<<31) /* Master Interrupt Enable */
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#define OHCI_HCCA_SIZE 0x100
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#define OHCI_HCCA_MASK 0xffffff00
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#define OHCI_EDPTR_MASK 0xfffffff0
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#define OHCI_FMI_FI 0x00003fff
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#define OHCI_FMI_FSMPS 0xffff0000
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#define OHCI_FMI_FIT 0x80000000
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#define OHCI_FR_RT (1U<<31)
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#define OHCI_LS_THRESH 0x628
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#define OHCI_RHA_RW_MASK 0x00000000 /* Mask of supported features. */
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#define OHCI_RHA_PSM (1<<8)
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#define OHCI_RHA_NPS (1<<9)
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#define OHCI_RHA_DT (1<<10)
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#define OHCI_RHA_OCPM (1<<11)
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#define OHCI_RHA_NOCP (1<<12)
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#define OHCI_RHA_POTPGT_MASK 0xff000000
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#define OHCI_RHS_LPS (1U<<0)
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#define OHCI_RHS_OCI (1U<<1)
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#define OHCI_RHS_DRWE (1U<<15)
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#define OHCI_RHS_LPSC (1U<<16)
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#define OHCI_RHS_OCIC (1U<<17)
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#define OHCI_RHS_CRWE (1U<<31)
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#define OHCI_PORT_CCS (1<<0)
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#define OHCI_PORT_PES (1<<1)
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#define OHCI_PORT_PSS (1<<2)
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#define OHCI_PORT_POCI (1<<3)
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#define OHCI_PORT_PRS (1<<4)
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#define OHCI_PORT_PPS (1<<8)
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#define OHCI_PORT_LSDA (1<<9)
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#define OHCI_PORT_CSC (1<<16)
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#define OHCI_PORT_PESC (1<<17)
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#define OHCI_PORT_PSSC (1<<18)
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#define OHCI_PORT_OCIC (1<<19)
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#define OHCI_PORT_PRSC (1<<20)
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#define OHCI_PORT_WTC (OHCI_PORT_CSC|OHCI_PORT_PESC|OHCI_PORT_PSSC \
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|OHCI_PORT_OCIC|OHCI_PORT_PRSC)
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#define OHCI_TD_DIR_SETUP 0x0
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#define OHCI_TD_DIR_OUT 0x1
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#define OHCI_TD_DIR_IN 0x2
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#define OHCI_TD_DIR_RESERVED 0x3
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#define OHCI_CC_NOERROR 0x0
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#define OHCI_CC_CRC 0x1
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#define OHCI_CC_BITSTUFFING 0x2
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#define OHCI_CC_DATATOGGLEMISMATCH 0x3
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#define OHCI_CC_STALL 0x4
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#define OHCI_CC_DEVICENOTRESPONDING 0x5
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#define OHCI_CC_PIDCHECKFAILURE 0x6
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#define OHCI_CC_UNDEXPETEDPID 0x7
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#define OHCI_CC_DATAOVERRUN 0x8
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#define OHCI_CC_DATAUNDERRUN 0x9
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#define OHCI_CC_BUFFEROVERRUN 0xc
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#define OHCI_CC_BUFFERUNDERRUN 0xd
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#define OHCI_HRESET_FSBIR (1 << 0)
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static void ohci_die(OHCIState *ohci)
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{
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ohci->ohci_die(ohci);
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}
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/* Update IRQ levels */
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static inline void ohci_intr_update(OHCIState *ohci)
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{
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int level = 0;
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if ((ohci->intr & OHCI_INTR_MIE) &&
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(ohci->intr_status & ohci->intr))
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level = 1;
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qemu_set_irq(ohci->irq, level);
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}
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/* Set an interrupt */
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static inline void ohci_set_interrupt(OHCIState *ohci, uint32_t intr)
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{
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ohci->intr_status |= intr;
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ohci_intr_update(ohci);
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}
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/* Attach or detach a device on a root hub port. */
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static void ohci_attach(USBPort *port1)
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{
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OHCIState *s = port1->opaque;
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OHCIPort *port = &s->rhport[port1->index];
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uint32_t old_state = port->ctrl;
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/* set connect status */
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port->ctrl |= OHCI_PORT_CCS | OHCI_PORT_CSC;
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/* update speed */
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if (port->port.dev->speed == USB_SPEED_LOW) {
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port->ctrl |= OHCI_PORT_LSDA;
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} else {
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port->ctrl &= ~OHCI_PORT_LSDA;
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}
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/* notify of remote-wakeup */
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if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) {
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ohci_set_interrupt(s, OHCI_INTR_RD);
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}
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trace_usb_ohci_port_attach(port1->index);
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if (old_state != port->ctrl) {
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ohci_set_interrupt(s, OHCI_INTR_RHSC);
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}
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}
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static void ohci_detach(USBPort *port1)
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{
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OHCIState *s = port1->opaque;
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OHCIPort *port = &s->rhport[port1->index];
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uint32_t old_state = port->ctrl;
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ohci_async_cancel_device(s, port1->dev);
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/* set connect status */
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if (port->ctrl & OHCI_PORT_CCS) {
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port->ctrl &= ~OHCI_PORT_CCS;
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port->ctrl |= OHCI_PORT_CSC;
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}
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/* disable port */
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if (port->ctrl & OHCI_PORT_PES) {
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port->ctrl &= ~OHCI_PORT_PES;
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port->ctrl |= OHCI_PORT_PESC;
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}
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trace_usb_ohci_port_detach(port1->index);
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if (old_state != port->ctrl) {
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ohci_set_interrupt(s, OHCI_INTR_RHSC);
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}
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}
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static void ohci_wakeup(USBPort *port1)
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{
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OHCIState *s = port1->opaque;
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OHCIPort *port = &s->rhport[port1->index];
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uint32_t intr = 0;
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if (port->ctrl & OHCI_PORT_PSS) {
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trace_usb_ohci_port_wakeup(port1->index);
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port->ctrl |= OHCI_PORT_PSSC;
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port->ctrl &= ~OHCI_PORT_PSS;
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intr = OHCI_INTR_RHSC;
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}
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/* Note that the controller can be suspended even if this port is not */
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if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) {
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trace_usb_ohci_remote_wakeup(s->name);
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/* This is the one state transition the controller can do by itself */
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s->ctl &= ~OHCI_CTL_HCFS;
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s->ctl |= OHCI_USB_RESUME;
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/* In suspend mode only ResumeDetected is possible, not RHSC:
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* see the OHCI spec 5.1.2.3.
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*/
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intr = OHCI_INTR_RD;
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}
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ohci_set_interrupt(s, intr);
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}
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static void ohci_child_detach(USBPort *port1, USBDevice *child)
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{
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OHCIState *s = port1->opaque;
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ohci_async_cancel_device(s, child);
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}
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static USBDevice *ohci_find_device(OHCIState *ohci, uint8_t addr)
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{
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USBDevice *dev;
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int i;
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for (i = 0; i < ohci->num_ports; i++) {
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if ((ohci->rhport[i].ctrl & OHCI_PORT_PES) == 0) {
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continue;
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}
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dev = usb_find_device(&ohci->rhport[i].port, addr);
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if (dev != NULL) {
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return dev;
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}
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}
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return NULL;
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}
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void ohci_stop_endpoints(OHCIState *ohci)
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{
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USBDevice *dev;
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int i, j;
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for (i = 0; i < ohci->num_ports; i++) {
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dev = ohci->rhport[i].port.dev;
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if (dev && dev->attached) {
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usb_device_ep_stopped(dev, &dev->ep_ctl);
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for (j = 0; j < USB_MAX_ENDPOINTS; j++) {
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usb_device_ep_stopped(dev, &dev->ep_in[j]);
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usb_device_ep_stopped(dev, &dev->ep_out[j]);
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}
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}
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}
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}
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static void ohci_roothub_reset(OHCIState *ohci)
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{
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OHCIPort *port;
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int i;
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ohci_bus_stop(ohci);
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ohci->rhdesc_a = OHCI_RHA_NPS | ohci->num_ports;
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ohci->rhdesc_b = 0x0; /* Impl. specific */
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ohci->rhstatus = 0;
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for (i = 0; i < ohci->num_ports; i++) {
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port = &ohci->rhport[i];
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port->ctrl = 0;
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if (port->port.dev && port->port.dev->attached) {
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usb_port_reset(&port->port);
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}
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}
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if (ohci->async_td) {
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usb_cancel_packet(&ohci->usb_packet);
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ohci->async_td = 0;
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}
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ohci_stop_endpoints(ohci);
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}
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/* Reset the controller */
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static void ohci_soft_reset(OHCIState *ohci)
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{
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trace_usb_ohci_reset(ohci->name);
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ohci_bus_stop(ohci);
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ohci->ctl = (ohci->ctl & OHCI_CTL_IR) | OHCI_USB_SUSPEND;
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ohci->old_ctl = 0;
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ohci->status = 0;
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ohci->intr_status = 0;
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ohci->intr = OHCI_INTR_MIE;
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ohci->hcca = 0;
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ohci->ctrl_head = ohci->ctrl_cur = 0;
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ohci->bulk_head = ohci->bulk_cur = 0;
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ohci->per_cur = 0;
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ohci->done = 0;
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ohci->done_count = 7;
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/* FSMPS is marked TBD in OCHI 1.0, what gives ffs?
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* I took the value linux sets ...
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*/
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ohci->fsmps = 0x2778;
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ohci->fi = 0x2edf;
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ohci->fit = 0;
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ohci->frt = 0;
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ohci->frame_number = 0;
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ohci->pstart = 0;
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ohci->lst = OHCI_LS_THRESH;
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}
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void ohci_hard_reset(OHCIState *ohci)
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{
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ohci_soft_reset(ohci);
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ohci->ctl = 0;
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ohci_roothub_reset(ohci);
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}
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/* Get an array of dwords from main memory */
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static inline int get_dwords(OHCIState *ohci,
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dma_addr_t addr, uint32_t *buf, int num)
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{
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int i;
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addr += ohci->localmem_base;
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for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
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if (dma_memory_read(ohci->as, addr, buf, sizeof(*buf))) {
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return -1;
|
|
}
|
|
*buf = le32_to_cpu(*buf);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Put an array of dwords in to main memory */
|
|
static inline int put_dwords(OHCIState *ohci,
|
|
dma_addr_t addr, uint32_t *buf, int num)
|
|
{
|
|
int i;
|
|
|
|
addr += ohci->localmem_base;
|
|
|
|
for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
|
|
uint32_t tmp = cpu_to_le32(*buf);
|
|
if (dma_memory_write(ohci->as, addr, &tmp, sizeof(tmp))) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Get an array of words from main memory */
|
|
static inline int get_words(OHCIState *ohci,
|
|
dma_addr_t addr, uint16_t *buf, int num)
|
|
{
|
|
int i;
|
|
|
|
addr += ohci->localmem_base;
|
|
|
|
for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
|
|
if (dma_memory_read(ohci->as, addr, buf, sizeof(*buf))) {
|
|
return -1;
|
|
}
|
|
*buf = le16_to_cpu(*buf);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Put an array of words in to main memory */
|
|
static inline int put_words(OHCIState *ohci,
|
|
dma_addr_t addr, uint16_t *buf, int num)
|
|
{
|
|
int i;
|
|
|
|
addr += ohci->localmem_base;
|
|
|
|
for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
|
|
uint16_t tmp = cpu_to_le16(*buf);
|
|
if (dma_memory_write(ohci->as, addr, &tmp, sizeof(tmp))) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int ohci_read_ed(OHCIState *ohci,
|
|
dma_addr_t addr, struct ohci_ed *ed)
|
|
{
|
|
return get_dwords(ohci, addr, (uint32_t *)ed, sizeof(*ed) >> 2);
|
|
}
|
|
|
|
static inline int ohci_read_td(OHCIState *ohci,
|
|
dma_addr_t addr, struct ohci_td *td)
|
|
{
|
|
return get_dwords(ohci, addr, (uint32_t *)td, sizeof(*td) >> 2);
|
|
}
|
|
|
|
static inline int ohci_read_iso_td(OHCIState *ohci,
|
|
dma_addr_t addr, struct ohci_iso_td *td)
|
|
{
|
|
return get_dwords(ohci, addr, (uint32_t *)td, 4) ||
|
|
get_words(ohci, addr + 16, td->offset, 8);
|
|
}
|
|
|
|
static inline int ohci_read_hcca(OHCIState *ohci,
|
|
dma_addr_t addr, struct ohci_hcca *hcca)
|
|
{
|
|
return dma_memory_read(ohci->as, addr + ohci->localmem_base,
|
|
hcca, sizeof(*hcca));
|
|
}
|
|
|
|
static inline int ohci_put_ed(OHCIState *ohci,
|
|
dma_addr_t addr, struct ohci_ed *ed)
|
|
{
|
|
/* ed->tail is under control of the HCD.
|
|
* Since just ed->head is changed by HC, just write back this
|
|
*/
|
|
|
|
return put_dwords(ohci, addr + ED_WBACK_OFFSET,
|
|
(uint32_t *)((char *)ed + ED_WBACK_OFFSET),
|
|
ED_WBACK_SIZE >> 2);
|
|
}
|
|
|
|
static inline int ohci_put_td(OHCIState *ohci,
|
|
dma_addr_t addr, struct ohci_td *td)
|
|
{
|
|
return put_dwords(ohci, addr, (uint32_t *)td, sizeof(*td) >> 2);
|
|
}
|
|
|
|
static inline int ohci_put_iso_td(OHCIState *ohci,
|
|
dma_addr_t addr, struct ohci_iso_td *td)
|
|
{
|
|
return put_dwords(ohci, addr, (uint32_t *)td, 4) ||
|
|
put_words(ohci, addr + 16, td->offset, 8);
|
|
}
|
|
|
|
static inline int ohci_put_hcca(OHCIState *ohci,
|
|
dma_addr_t addr, struct ohci_hcca *hcca)
|
|
{
|
|
return dma_memory_write(ohci->as,
|
|
addr + ohci->localmem_base + HCCA_WRITEBACK_OFFSET,
|
|
(char *)hcca + HCCA_WRITEBACK_OFFSET,
|
|
HCCA_WRITEBACK_SIZE);
|
|
}
|
|
|
|
/* Read/Write the contents of a TD from/to main memory. */
|
|
static int ohci_copy_td(OHCIState *ohci, struct ohci_td *td,
|
|
uint8_t *buf, int len, DMADirection dir)
|
|
{
|
|
dma_addr_t ptr, n;
|
|
|
|
ptr = td->cbp;
|
|
n = 0x1000 - (ptr & 0xfff);
|
|
if (n > len)
|
|
n = len;
|
|
|
|
if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, n, dir)) {
|
|
return -1;
|
|
}
|
|
if (n == len) {
|
|
return 0;
|
|
}
|
|
ptr = td->be & ~0xfffu;
|
|
buf += n;
|
|
if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf,
|
|
len - n, dir)) {
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Read/Write the contents of an ISO TD from/to main memory. */
|
|
static int ohci_copy_iso_td(OHCIState *ohci,
|
|
uint32_t start_addr, uint32_t end_addr,
|
|
uint8_t *buf, int len, DMADirection dir)
|
|
{
|
|
dma_addr_t ptr, n;
|
|
|
|
ptr = start_addr;
|
|
n = 0x1000 - (ptr & 0xfff);
|
|
if (n > len)
|
|
n = len;
|
|
|
|
if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, n, dir)) {
|
|
return -1;
|
|
}
|
|
if (n == len) {
|
|
return 0;
|
|
}
|
|
ptr = end_addr & ~0xfffu;
|
|
buf += n;
|
|
if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf,
|
|
len - n, dir)) {
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void ohci_process_lists(OHCIState *ohci, int completion);
|
|
|
|
static void ohci_async_complete_packet(USBPort *port, USBPacket *packet)
|
|
{
|
|
OHCIState *ohci = container_of(packet, OHCIState, usb_packet);
|
|
|
|
trace_usb_ohci_async_complete();
|
|
ohci->async_complete = true;
|
|
ohci_process_lists(ohci, 1);
|
|
}
|
|
|
|
#define USUB(a, b) ((int16_t)((uint16_t)(a) - (uint16_t)(b)))
|
|
|
|
static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed,
|
|
int completion)
|
|
{
|
|
int dir;
|
|
size_t len = 0;
|
|
const char *str = NULL;
|
|
int pid;
|
|
int ret;
|
|
int i;
|
|
USBDevice *dev;
|
|
USBEndpoint *ep;
|
|
struct ohci_iso_td iso_td;
|
|
uint32_t addr;
|
|
uint16_t starting_frame;
|
|
int16_t relative_frame_number;
|
|
int frame_count;
|
|
uint32_t start_offset, next_offset, end_offset = 0;
|
|
uint32_t start_addr, end_addr;
|
|
|
|
addr = ed->head & OHCI_DPTR_MASK;
|
|
|
|
if (ohci_read_iso_td(ohci, addr, &iso_td)) {
|
|
trace_usb_ohci_iso_td_read_failed(addr);
|
|
ohci_die(ohci);
|
|
return 1;
|
|
}
|
|
|
|
starting_frame = OHCI_BM(iso_td.flags, TD_SF);
|
|
frame_count = OHCI_BM(iso_td.flags, TD_FC);
|
|
relative_frame_number = USUB(ohci->frame_number, starting_frame);
|
|
|
|
trace_usb_ohci_iso_td_head(
|
|
ed->head & OHCI_DPTR_MASK, ed->tail & OHCI_DPTR_MASK,
|
|
iso_td.flags, iso_td.bp, iso_td.next, iso_td.be,
|
|
ohci->frame_number, starting_frame,
|
|
frame_count, relative_frame_number);
|
|
trace_usb_ohci_iso_td_head_offset(
|
|
iso_td.offset[0], iso_td.offset[1],
|
|
iso_td.offset[2], iso_td.offset[3],
|
|
iso_td.offset[4], iso_td.offset[5],
|
|
iso_td.offset[6], iso_td.offset[7]);
|
|
|
|
if (relative_frame_number < 0) {
|
|
trace_usb_ohci_iso_td_relative_frame_number_neg(relative_frame_number);
|
|
return 1;
|
|
} else if (relative_frame_number > frame_count) {
|
|
/* ISO TD expired - retire the TD to the Done Queue and continue with
|
|
the next ISO TD of the same ED */
|
|
trace_usb_ohci_iso_td_relative_frame_number_big(relative_frame_number,
|
|
frame_count);
|
|
if (OHCI_CC_DATAOVERRUN == OHCI_BM(iso_td.flags, TD_CC)) {
|
|
/* avoid infinite loop */
|
|
return 1;
|
|
}
|
|
OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_DATAOVERRUN);
|
|
ed->head &= ~OHCI_DPTR_MASK;
|
|
ed->head |= (iso_td.next & OHCI_DPTR_MASK);
|
|
iso_td.next = ohci->done;
|
|
ohci->done = addr;
|
|
i = OHCI_BM(iso_td.flags, TD_DI);
|
|
if (i < ohci->done_count)
|
|
ohci->done_count = i;
|
|
if (ohci_put_iso_td(ohci, addr, &iso_td)) {
|
|
ohci_die(ohci);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
dir = OHCI_BM(ed->flags, ED_D);
|
|
switch (dir) {
|
|
case OHCI_TD_DIR_IN:
|
|
str = "in";
|
|
pid = USB_TOKEN_IN;
|
|
break;
|
|
case OHCI_TD_DIR_OUT:
|
|
str = "out";
|
|
pid = USB_TOKEN_OUT;
|
|
break;
|
|
case OHCI_TD_DIR_SETUP:
|
|
str = "setup";
|
|
pid = USB_TOKEN_SETUP;
|
|
break;
|
|
default:
|
|
trace_usb_ohci_iso_td_bad_direction(dir);
|
|
return 1;
|
|
}
|
|
|
|
if (!iso_td.bp || !iso_td.be) {
|
|
trace_usb_ohci_iso_td_bad_bp_be(iso_td.bp, iso_td.be);
|
|
return 1;
|
|
}
|
|
|
|
start_offset = iso_td.offset[relative_frame_number];
|
|
if (relative_frame_number < frame_count) {
|
|
next_offset = iso_td.offset[relative_frame_number + 1];
|
|
} else {
|
|
next_offset = iso_td.be;
|
|
}
|
|
|
|
if (!(OHCI_BM(start_offset, TD_PSW_CC) & 0xe) ||
|
|
((relative_frame_number < frame_count) &&
|
|
!(OHCI_BM(next_offset, TD_PSW_CC) & 0xe))) {
|
|
trace_usb_ohci_iso_td_bad_cc_not_accessed(start_offset, next_offset);
|
|
return 1;
|
|
}
|
|
|
|
if ((relative_frame_number < frame_count) && (start_offset > next_offset)) {
|
|
trace_usb_ohci_iso_td_bad_cc_overrun(start_offset, next_offset);
|
|
return 1;
|
|
}
|
|
|
|
if ((start_offset & 0x1000) == 0) {
|
|
start_addr = (iso_td.bp & OHCI_PAGE_MASK) |
|
|
(start_offset & OHCI_OFFSET_MASK);
|
|
} else {
|
|
start_addr = (iso_td.be & OHCI_PAGE_MASK) |
|
|
(start_offset & OHCI_OFFSET_MASK);
|
|
}
|
|
|
|
if (relative_frame_number < frame_count) {
|
|
end_offset = next_offset - 1;
|
|
if ((end_offset & 0x1000) == 0) {
|
|
end_addr = (iso_td.bp & OHCI_PAGE_MASK) |
|
|
(end_offset & OHCI_OFFSET_MASK);
|
|
} else {
|
|
end_addr = (iso_td.be & OHCI_PAGE_MASK) |
|
|
(end_offset & OHCI_OFFSET_MASK);
|
|
}
|
|
} else {
|
|
/* Last packet in the ISO TD */
|
|
end_addr = next_offset;
|
|
}
|
|
|
|
if (start_addr > end_addr) {
|
|
trace_usb_ohci_iso_td_bad_cc_overrun(start_addr, end_addr);
|
|
return 1;
|
|
}
|
|
|
|
if ((start_addr & OHCI_PAGE_MASK) != (end_addr & OHCI_PAGE_MASK)) {
|
|
len = (end_addr & OHCI_OFFSET_MASK) + 0x1001
|
|
- (start_addr & OHCI_OFFSET_MASK);
|
|
} else {
|
|
len = end_addr - start_addr + 1;
|
|
}
|
|
if (len > sizeof(ohci->usb_buf)) {
|
|
len = sizeof(ohci->usb_buf);
|
|
}
|
|
|
|
if (len && dir != OHCI_TD_DIR_IN) {
|
|
if (ohci_copy_iso_td(ohci, start_addr, end_addr, ohci->usb_buf, len,
|
|
DMA_DIRECTION_TO_DEVICE)) {
|
|
ohci_die(ohci);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (!completion) {
|
|
bool int_req = relative_frame_number == frame_count &&
|
|
OHCI_BM(iso_td.flags, TD_DI) == 0;
|
|
dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA));
|
|
if (dev == NULL) {
|
|
trace_usb_ohci_td_dev_error();
|
|
return 1;
|
|
}
|
|
ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN));
|
|
usb_packet_setup(&ohci->usb_packet, pid, ep, 0, addr, false, int_req);
|
|
usb_packet_addbuf(&ohci->usb_packet, ohci->usb_buf, len);
|
|
usb_handle_packet(dev, &ohci->usb_packet);
|
|
if (ohci->usb_packet.status == USB_RET_ASYNC) {
|
|
usb_device_flush_ep_queue(dev, ep);
|
|
return 1;
|
|
}
|
|
}
|
|
if (ohci->usb_packet.status == USB_RET_SUCCESS) {
|
|
ret = ohci->usb_packet.actual_length;
|
|
} else {
|
|
ret = ohci->usb_packet.status;
|
|
}
|
|
|
|
trace_usb_ohci_iso_td_so(start_offset, end_offset, start_addr, end_addr,
|
|
str, len, ret);
|
|
|
|
/* Writeback */
|
|
if (dir == OHCI_TD_DIR_IN && ret >= 0 && ret <= len) {
|
|
/* IN transfer succeeded */
|
|
if (ohci_copy_iso_td(ohci, start_addr, end_addr, ohci->usb_buf, ret,
|
|
DMA_DIRECTION_FROM_DEVICE)) {
|
|
ohci_die(ohci);
|
|
return 1;
|
|
}
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
|
|
OHCI_CC_NOERROR);
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, ret);
|
|
} else if (dir == OHCI_TD_DIR_OUT && ret == len) {
|
|
/* OUT transfer succeeded */
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
|
|
OHCI_CC_NOERROR);
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 0);
|
|
} else {
|
|
if (ret > (ssize_t) len) {
|
|
trace_usb_ohci_iso_td_data_overrun(ret, len);
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
|
|
OHCI_CC_DATAOVERRUN);
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
|
|
len);
|
|
} else if (ret >= 0) {
|
|
trace_usb_ohci_iso_td_data_underrun(ret);
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
|
|
OHCI_CC_DATAUNDERRUN);
|
|
} else {
|
|
switch (ret) {
|
|
case USB_RET_IOERROR:
|
|
case USB_RET_NODEV:
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
|
|
OHCI_CC_DEVICENOTRESPONDING);
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
|
|
0);
|
|
break;
|
|
case USB_RET_NAK:
|
|
case USB_RET_STALL:
|
|
trace_usb_ohci_iso_td_nak(ret);
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
|
|
OHCI_CC_STALL);
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
|
|
0);
|
|
break;
|
|
default:
|
|
trace_usb_ohci_iso_td_bad_response(ret);
|
|
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
|
|
OHCI_CC_UNDEXPETEDPID);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (relative_frame_number == frame_count) {
|
|
/* Last data packet of ISO TD - retire the TD to the Done Queue */
|
|
OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_NOERROR);
|
|
ed->head &= ~OHCI_DPTR_MASK;
|
|
ed->head |= (iso_td.next & OHCI_DPTR_MASK);
|
|
iso_td.next = ohci->done;
|
|
ohci->done = addr;
|
|
i = OHCI_BM(iso_td.flags, TD_DI);
|
|
if (i < ohci->done_count)
|
|
ohci->done_count = i;
|
|
}
|
|
if (ohci_put_iso_td(ohci, addr, &iso_td)) {
|
|
ohci_die(ohci);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void ohci_td_pkt(const char *msg, const uint8_t *buf, size_t len)
|
|
{
|
|
bool print16;
|
|
bool printall;
|
|
const int width = 16;
|
|
int i;
|
|
char tmp[3 * width + 1];
|
|
char *p = tmp;
|
|
|
|
print16 = !!trace_event_get_state_backends(TRACE_USB_OHCI_TD_PKT_SHORT);
|
|
printall = !!trace_event_get_state_backends(TRACE_USB_OHCI_TD_PKT_FULL);
|
|
|
|
if (!printall && !print16) {
|
|
return;
|
|
}
|
|
|
|
for (i = 0; ; i++) {
|
|
if (i && (!(i % width) || (i == len))) {
|
|
if (!printall) {
|
|
trace_usb_ohci_td_pkt_short(msg, tmp);
|
|
break;
|
|
}
|
|
trace_usb_ohci_td_pkt_full(msg, tmp);
|
|
p = tmp;
|
|
*p = 0;
|
|
}
|
|
if (i == len) {
|
|
break;
|
|
}
|
|
|
|
p += sprintf(p, " %.2x", buf[i]);
|
|
}
|
|
}
|
|
|
|
/* Service a transport descriptor.
|
|
Returns nonzero to terminate processing of this endpoint. */
|
|
|
|
static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed)
|
|
{
|
|
int dir;
|
|
size_t len = 0, pktlen = 0;
|
|
const char *str = NULL;
|
|
int pid;
|
|
int ret;
|
|
int i;
|
|
USBDevice *dev;
|
|
USBEndpoint *ep;
|
|
struct ohci_td td;
|
|
uint32_t addr;
|
|
int flag_r;
|
|
int completion;
|
|
|
|
addr = ed->head & OHCI_DPTR_MASK;
|
|
/* See if this TD has already been submitted to the device. */
|
|
completion = (addr == ohci->async_td);
|
|
if (completion && !ohci->async_complete) {
|
|
trace_usb_ohci_td_skip_async();
|
|
return 1;
|
|
}
|
|
if (ohci_read_td(ohci, addr, &td)) {
|
|
trace_usb_ohci_td_read_error(addr);
|
|
ohci_die(ohci);
|
|
return 1;
|
|
}
|
|
|
|
dir = OHCI_BM(ed->flags, ED_D);
|
|
switch (dir) {
|
|
case OHCI_TD_DIR_OUT:
|
|
case OHCI_TD_DIR_IN:
|
|
/* Same value. */
|
|
break;
|
|
default:
|
|
dir = OHCI_BM(td.flags, TD_DP);
|
|
break;
|
|
}
|
|
|
|
switch (dir) {
|
|
case OHCI_TD_DIR_IN:
|
|
str = "in";
|
|
pid = USB_TOKEN_IN;
|
|
break;
|
|
case OHCI_TD_DIR_OUT:
|
|
str = "out";
|
|
pid = USB_TOKEN_OUT;
|
|
break;
|
|
case OHCI_TD_DIR_SETUP:
|
|
str = "setup";
|
|
pid = USB_TOKEN_SETUP;
|
|
break;
|
|
default:
|
|
trace_usb_ohci_td_bad_direction(dir);
|
|
return 1;
|
|
}
|
|
if (td.cbp && td.be) {
|
|
if ((td.cbp & 0xfffff000) != (td.be & 0xfffff000)) {
|
|
len = (td.be & 0xfff) + 0x1001 - (td.cbp & 0xfff);
|
|
} else {
|
|
if (td.cbp > td.be) {
|
|
trace_usb_ohci_iso_td_bad_cc_overrun(td.cbp, td.be);
|
|
ohci_die(ohci);
|
|
return 1;
|
|
}
|
|
len = (td.be - td.cbp) + 1;
|
|
}
|
|
if (len > sizeof(ohci->usb_buf)) {
|
|
len = sizeof(ohci->usb_buf);
|
|
}
|
|
|
|
pktlen = len;
|
|
if (len && dir != OHCI_TD_DIR_IN) {
|
|
/* The endpoint may not allow us to transfer it all now */
|
|
pktlen = (ed->flags & OHCI_ED_MPS_MASK) >> OHCI_ED_MPS_SHIFT;
|
|
if (pktlen > len) {
|
|
pktlen = len;
|
|
}
|
|
if (!completion) {
|
|
if (ohci_copy_td(ohci, &td, ohci->usb_buf, pktlen,
|
|
DMA_DIRECTION_TO_DEVICE)) {
|
|
ohci_die(ohci);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
flag_r = (td.flags & OHCI_TD_R) != 0;
|
|
trace_usb_ohci_td_pkt_hdr(addr, (int64_t)pktlen, (int64_t)len, str,
|
|
flag_r, td.cbp, td.be);
|
|
ohci_td_pkt("OUT", ohci->usb_buf, pktlen);
|
|
|
|
if (completion) {
|
|
ohci->async_td = 0;
|
|
ohci->async_complete = false;
|
|
} else {
|
|
if (ohci->async_td) {
|
|
/* ??? The hardware should allow one active packet per
|
|
endpoint. We only allow one active packet per controller.
|
|
This should be sufficient as long as devices respond in a
|
|
timely manner.
|
|
*/
|
|
trace_usb_ohci_td_too_many_pending();
|
|
return 1;
|
|
}
|
|
dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA));
|
|
if (dev == NULL) {
|
|
trace_usb_ohci_td_dev_error();
|
|
return 1;
|
|
}
|
|
ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN));
|
|
usb_packet_setup(&ohci->usb_packet, pid, ep, 0, addr, !flag_r,
|
|
OHCI_BM(td.flags, TD_DI) == 0);
|
|
usb_packet_addbuf(&ohci->usb_packet, ohci->usb_buf, pktlen);
|
|
usb_handle_packet(dev, &ohci->usb_packet);
|
|
trace_usb_ohci_td_packet_status(ohci->usb_packet.status);
|
|
|
|
if (ohci->usb_packet.status == USB_RET_ASYNC) {
|
|
usb_device_flush_ep_queue(dev, ep);
|
|
ohci->async_td = addr;
|
|
return 1;
|
|
}
|
|
}
|
|
if (ohci->usb_packet.status == USB_RET_SUCCESS) {
|
|
ret = ohci->usb_packet.actual_length;
|
|
} else {
|
|
ret = ohci->usb_packet.status;
|
|
}
|
|
|
|
if (ret >= 0) {
|
|
if (dir == OHCI_TD_DIR_IN) {
|
|
if (ohci_copy_td(ohci, &td, ohci->usb_buf, ret,
|
|
DMA_DIRECTION_FROM_DEVICE)) {
|
|
ohci_die(ohci);
|
|
}
|
|
ohci_td_pkt("IN", ohci->usb_buf, pktlen);
|
|
} else {
|
|
ret = pktlen;
|
|
}
|
|
}
|
|
|
|
/* Writeback */
|
|
if (ret == pktlen || (dir == OHCI_TD_DIR_IN && ret >= 0 && flag_r)) {
|
|
/* Transmission succeeded. */
|
|
if (ret == len) {
|
|
td.cbp = 0;
|
|
} else {
|
|
if ((td.cbp & 0xfff) + ret > 0xfff) {
|
|
td.cbp = (td.be & ~0xfff) + ((td.cbp + ret) & 0xfff);
|
|
} else {
|
|
td.cbp += ret;
|
|
}
|
|
}
|
|
td.flags |= OHCI_TD_T1;
|
|
td.flags ^= OHCI_TD_T0;
|
|
OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_NOERROR);
|
|
OHCI_SET_BM(td.flags, TD_EC, 0);
|
|
|
|
if ((dir != OHCI_TD_DIR_IN) && (ret != len)) {
|
|
/* Partial packet transfer: TD not ready to retire yet */
|
|
goto exit_no_retire;
|
|
}
|
|
|
|
/* Setting ED_C is part of the TD retirement process */
|
|
ed->head &= ~OHCI_ED_C;
|
|
if (td.flags & OHCI_TD_T0)
|
|
ed->head |= OHCI_ED_C;
|
|
} else {
|
|
if (ret >= 0) {
|
|
trace_usb_ohci_td_underrun();
|
|
OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAUNDERRUN);
|
|
} else {
|
|
switch (ret) {
|
|
case USB_RET_IOERROR:
|
|
case USB_RET_NODEV:
|
|
trace_usb_ohci_td_dev_error();
|
|
OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DEVICENOTRESPONDING);
|
|
break;
|
|
case USB_RET_NAK:
|
|
trace_usb_ohci_td_nak();
|
|
return 1;
|
|
case USB_RET_STALL:
|
|
trace_usb_ohci_td_stall();
|
|
OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_STALL);
|
|
break;
|
|
case USB_RET_BABBLE:
|
|
trace_usb_ohci_td_babble();
|
|
OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAOVERRUN);
|
|
break;
|
|
default:
|
|
trace_usb_ohci_td_bad_device_response(ret);
|
|
OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_UNDEXPETEDPID);
|
|
OHCI_SET_BM(td.flags, TD_EC, 3);
|
|
break;
|
|
}
|
|
/* An error occured so we have to clear the interrupt counter. See
|
|
* spec at 6.4.4 on page 104 */
|
|
ohci->done_count = 0;
|
|
}
|
|
ed->head |= OHCI_ED_H;
|
|
}
|
|
|
|
/* Retire this TD */
|
|
ed->head &= ~OHCI_DPTR_MASK;
|
|
ed->head |= td.next & OHCI_DPTR_MASK;
|
|
td.next = ohci->done;
|
|
ohci->done = addr;
|
|
i = OHCI_BM(td.flags, TD_DI);
|
|
if (i < ohci->done_count)
|
|
ohci->done_count = i;
|
|
exit_no_retire:
|
|
if (ohci_put_td(ohci, addr, &td)) {
|
|
ohci_die(ohci);
|
|
return 1;
|
|
}
|
|
return OHCI_BM(td.flags, TD_CC) != OHCI_CC_NOERROR;
|
|
}
|
|
|
|
/* Service an endpoint list. Returns nonzero if active TD were found. */
|
|
static int ohci_service_ed_list(OHCIState *ohci, uint32_t head, int completion)
|
|
{
|
|
struct ohci_ed ed;
|
|
uint32_t next_ed;
|
|
uint32_t cur;
|
|
int active;
|
|
uint32_t link_cnt = 0;
|
|
active = 0;
|
|
|
|
if (head == 0)
|
|
return 0;
|
|
|
|
for (cur = head; cur && link_cnt++ < ED_LINK_LIMIT; cur = next_ed) {
|
|
if (ohci_read_ed(ohci, cur, &ed)) {
|
|
trace_usb_ohci_ed_read_error(cur);
|
|
ohci_die(ohci);
|
|
return 0;
|
|
}
|
|
|
|
next_ed = ed.next & OHCI_DPTR_MASK;
|
|
|
|
if ((ed.head & OHCI_ED_H) || (ed.flags & OHCI_ED_K)) {
|
|
uint32_t addr;
|
|
/* Cancel pending packets for ED that have been paused. */
|
|
addr = ed.head & OHCI_DPTR_MASK;
|
|
if (ohci->async_td && addr == ohci->async_td) {
|
|
usb_cancel_packet(&ohci->usb_packet);
|
|
ohci->async_td = 0;
|
|
usb_device_ep_stopped(ohci->usb_packet.ep->dev,
|
|
ohci->usb_packet.ep);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
while ((ed.head & OHCI_DPTR_MASK) != ed.tail) {
|
|
trace_usb_ohci_ed_pkt(cur, (ed.head & OHCI_ED_H) != 0,
|
|
(ed.head & OHCI_ED_C) != 0, ed.head & OHCI_DPTR_MASK,
|
|
ed.tail & OHCI_DPTR_MASK, ed.next & OHCI_DPTR_MASK);
|
|
trace_usb_ohci_ed_pkt_flags(
|
|
OHCI_BM(ed.flags, ED_FA), OHCI_BM(ed.flags, ED_EN),
|
|
OHCI_BM(ed.flags, ED_D), (ed.flags & OHCI_ED_S)!= 0,
|
|
(ed.flags & OHCI_ED_K) != 0, (ed.flags & OHCI_ED_F) != 0,
|
|
OHCI_BM(ed.flags, ED_MPS));
|
|
|
|
active = 1;
|
|
|
|
if ((ed.flags & OHCI_ED_F) == 0) {
|
|
if (ohci_service_td(ohci, &ed))
|
|
break;
|
|
} else {
|
|
/* Handle isochronous endpoints */
|
|
if (ohci_service_iso_td(ohci, &ed, completion))
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ohci_put_ed(ohci, cur, &ed)) {
|
|
ohci_die(ohci);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return active;
|
|
}
|
|
|
|
/* set a timer for EOF */
|
|
static void ohci_eof_timer(OHCIState *ohci)
|
|
{
|
|
timer_mod(ohci->eof_timer, ohci->sof_time + usb_frame_time);
|
|
}
|
|
/* Set a timer for EOF and generate a SOF event */
|
|
static void ohci_sof(OHCIState *ohci)
|
|
{
|
|
ohci->sof_time += usb_frame_time;
|
|
ohci_eof_timer(ohci);
|
|
ohci_set_interrupt(ohci, OHCI_INTR_SF);
|
|
}
|
|
|
|
/* Process Control and Bulk lists. */
|
|
static void ohci_process_lists(OHCIState *ohci, int completion)
|
|
{
|
|
if ((ohci->ctl & OHCI_CTL_CLE) && (ohci->status & OHCI_STATUS_CLF)) {
|
|
if (ohci->ctrl_cur && ohci->ctrl_cur != ohci->ctrl_head) {
|
|
trace_usb_ohci_process_lists(ohci->ctrl_head, ohci->ctrl_cur);
|
|
}
|
|
if (!ohci_service_ed_list(ohci, ohci->ctrl_head, completion)) {
|
|
ohci->ctrl_cur = 0;
|
|
ohci->status &= ~OHCI_STATUS_CLF;
|
|
}
|
|
}
|
|
|
|
if ((ohci->ctl & OHCI_CTL_BLE) && (ohci->status & OHCI_STATUS_BLF)) {
|
|
if (!ohci_service_ed_list(ohci, ohci->bulk_head, completion)) {
|
|
ohci->bulk_cur = 0;
|
|
ohci->status &= ~OHCI_STATUS_BLF;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Do frame processing on frame boundary */
|
|
static void ohci_frame_boundary(void *opaque)
|
|
{
|
|
OHCIState *ohci = opaque;
|
|
struct ohci_hcca hcca;
|
|
|
|
if (ohci_read_hcca(ohci, ohci->hcca, &hcca)) {
|
|
trace_usb_ohci_hcca_read_error(ohci->hcca);
|
|
ohci_die(ohci);
|
|
return;
|
|
}
|
|
|
|
/* Process all the lists at the end of the frame */
|
|
if (ohci->ctl & OHCI_CTL_PLE) {
|
|
int n;
|
|
|
|
n = ohci->frame_number & 0x1f;
|
|
ohci_service_ed_list(ohci, le32_to_cpu(hcca.intr[n]), 0);
|
|
}
|
|
|
|
/* Cancel all pending packets if either of the lists has been disabled. */
|
|
if (ohci->old_ctl & (~ohci->ctl) & (OHCI_CTL_BLE | OHCI_CTL_CLE)) {
|
|
if (ohci->async_td) {
|
|
usb_cancel_packet(&ohci->usb_packet);
|
|
ohci->async_td = 0;
|
|
}
|
|
ohci_stop_endpoints(ohci);
|
|
}
|
|
ohci->old_ctl = ohci->ctl;
|
|
ohci_process_lists(ohci, 0);
|
|
|
|
/* Stop if UnrecoverableError happened or ohci_sof will crash */
|
|
if (ohci->intr_status & OHCI_INTR_UE) {
|
|
return;
|
|
}
|
|
|
|
/* Frame boundary, so do EOF stuf here */
|
|
ohci->frt = ohci->fit;
|
|
|
|
/* Increment frame number and take care of endianness. */
|
|
ohci->frame_number = (ohci->frame_number + 1) & 0xffff;
|
|
hcca.frame = cpu_to_le16(ohci->frame_number);
|
|
|
|
if (ohci->done_count == 0 && !(ohci->intr_status & OHCI_INTR_WD)) {
|
|
if (!ohci->done)
|
|
abort();
|
|
if (ohci->intr & ohci->intr_status)
|
|
ohci->done |= 1;
|
|
hcca.done = cpu_to_le32(ohci->done);
|
|
ohci->done = 0;
|
|
ohci->done_count = 7;
|
|
ohci_set_interrupt(ohci, OHCI_INTR_WD);
|
|
}
|
|
|
|
if (ohci->done_count != 7 && ohci->done_count != 0)
|
|
ohci->done_count--;
|
|
|
|
/* Do SOF stuff here */
|
|
ohci_sof(ohci);
|
|
|
|
/* Writeback HCCA */
|
|
if (ohci_put_hcca(ohci, ohci->hcca, &hcca)) {
|
|
ohci_die(ohci);
|
|
}
|
|
}
|
|
|
|
/* Start sending SOF tokens across the USB bus, lists are processed in
|
|
* next frame
|
|
*/
|
|
static int ohci_bus_start(OHCIState *ohci)
|
|
{
|
|
trace_usb_ohci_start(ohci->name);
|
|
|
|
/* Delay the first SOF event by one frame time as
|
|
* linux driver is not ready to receive it and
|
|
* can meet some race conditions
|
|
*/
|
|
|
|
ohci->sof_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
|
|
ohci_eof_timer(ohci);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Stop sending SOF tokens on the bus */
|
|
void ohci_bus_stop(OHCIState *ohci)
|
|
{
|
|
trace_usb_ohci_stop(ohci->name);
|
|
timer_del(ohci->eof_timer);
|
|
}
|
|
|
|
/* Sets a flag in a port status register but only set it if the port is
|
|
* connected, if not set ConnectStatusChange flag. If flag is enabled
|
|
* return 1.
|
|
*/
|
|
static int ohci_port_set_if_connected(OHCIState *ohci, int i, uint32_t val)
|
|
{
|
|
int ret = 1;
|
|
|
|
/* writing a 0 has no effect */
|
|
if (val == 0)
|
|
return 0;
|
|
|
|
/* If CurrentConnectStatus is cleared we set
|
|
* ConnectStatusChange
|
|
*/
|
|
if (!(ohci->rhport[i].ctrl & OHCI_PORT_CCS)) {
|
|
ohci->rhport[i].ctrl |= OHCI_PORT_CSC;
|
|
if (ohci->rhstatus & OHCI_RHS_DRWE) {
|
|
/* TODO: CSC is a wakeup event */
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (ohci->rhport[i].ctrl & val)
|
|
ret = 0;
|
|
|
|
/* set the bit */
|
|
ohci->rhport[i].ctrl |= val;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Set the frame interval - frame interval toggle is manipulated by the hcd only */
|
|
static void ohci_set_frame_interval(OHCIState *ohci, uint16_t val)
|
|
{
|
|
val &= OHCI_FMI_FI;
|
|
|
|
if (val != ohci->fi) {
|
|
trace_usb_ohci_set_frame_interval(ohci->name, ohci->fi, ohci->fi);
|
|
}
|
|
|
|
ohci->fi = val;
|
|
}
|
|
|
|
static void ohci_port_power(OHCIState *ohci, int i, int p)
|
|
{
|
|
if (p) {
|
|
ohci->rhport[i].ctrl |= OHCI_PORT_PPS;
|
|
} else {
|
|
ohci->rhport[i].ctrl &= ~(OHCI_PORT_PPS|
|
|
OHCI_PORT_CCS|
|
|
OHCI_PORT_PSS|
|
|
OHCI_PORT_PRS);
|
|
}
|
|
}
|
|
|
|
/* Set HcControlRegister */
|
|
static void ohci_set_ctl(OHCIState *ohci, uint32_t val)
|
|
{
|
|
uint32_t old_state;
|
|
uint32_t new_state;
|
|
|
|
old_state = ohci->ctl & OHCI_CTL_HCFS;
|
|
ohci->ctl = val;
|
|
new_state = ohci->ctl & OHCI_CTL_HCFS;
|
|
|
|
/* no state change */
|
|
if (old_state == new_state)
|
|
return;
|
|
|
|
trace_usb_ohci_set_ctl(ohci->name, new_state);
|
|
switch (new_state) {
|
|
case OHCI_USB_OPERATIONAL:
|
|
ohci_bus_start(ohci);
|
|
break;
|
|
case OHCI_USB_SUSPEND:
|
|
ohci_bus_stop(ohci);
|
|
/* clear pending SF otherwise linux driver loops in ohci_irq() */
|
|
ohci->intr_status &= ~OHCI_INTR_SF;
|
|
ohci_intr_update(ohci);
|
|
break;
|
|
case OHCI_USB_RESUME:
|
|
trace_usb_ohci_resume(ohci->name);
|
|
break;
|
|
case OHCI_USB_RESET:
|
|
ohci_roothub_reset(ohci);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static uint32_t ohci_get_frame_remaining(OHCIState *ohci)
|
|
{
|
|
uint16_t fr;
|
|
int64_t tks;
|
|
|
|
if ((ohci->ctl & OHCI_CTL_HCFS) != OHCI_USB_OPERATIONAL)
|
|
return (ohci->frt << 31);
|
|
|
|
/* Being in USB operational state guarnatees sof_time was
|
|
* set already.
|
|
*/
|
|
tks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - ohci->sof_time;
|
|
if (tks < 0) {
|
|
tks = 0;
|
|
}
|
|
|
|
/* avoid muldiv if possible */
|
|
if (tks >= usb_frame_time)
|
|
return (ohci->frt << 31);
|
|
|
|
tks = tks / usb_bit_time;
|
|
fr = (uint16_t)(ohci->fi - tks);
|
|
|
|
return (ohci->frt << 31) | fr;
|
|
}
|
|
|
|
|
|
/* Set root hub status */
|
|
static void ohci_set_hub_status(OHCIState *ohci, uint32_t val)
|
|
{
|
|
uint32_t old_state;
|
|
|
|
old_state = ohci->rhstatus;
|
|
|
|
/* write 1 to clear OCIC */
|
|
if (val & OHCI_RHS_OCIC)
|
|
ohci->rhstatus &= ~OHCI_RHS_OCIC;
|
|
|
|
if (val & OHCI_RHS_LPS) {
|
|
int i;
|
|
|
|
for (i = 0; i < ohci->num_ports; i++)
|
|
ohci_port_power(ohci, i, 0);
|
|
trace_usb_ohci_hub_power_down();
|
|
}
|
|
|
|
if (val & OHCI_RHS_LPSC) {
|
|
int i;
|
|
|
|
for (i = 0; i < ohci->num_ports; i++)
|
|
ohci_port_power(ohci, i, 1);
|
|
trace_usb_ohci_hub_power_up();
|
|
}
|
|
|
|
if (val & OHCI_RHS_DRWE)
|
|
ohci->rhstatus |= OHCI_RHS_DRWE;
|
|
|
|
if (val & OHCI_RHS_CRWE)
|
|
ohci->rhstatus &= ~OHCI_RHS_DRWE;
|
|
|
|
if (old_state != ohci->rhstatus)
|
|
ohci_set_interrupt(ohci, OHCI_INTR_RHSC);
|
|
}
|
|
|
|
/* Set root hub port status */
|
|
static void ohci_port_set_status(OHCIState *ohci, int portnum, uint32_t val)
|
|
{
|
|
uint32_t old_state;
|
|
OHCIPort *port;
|
|
|
|
port = &ohci->rhport[portnum];
|
|
old_state = port->ctrl;
|
|
|
|
/* Write to clear CSC, PESC, PSSC, OCIC, PRSC */
|
|
if (val & OHCI_PORT_WTC)
|
|
port->ctrl &= ~(val & OHCI_PORT_WTC);
|
|
|
|
if (val & OHCI_PORT_CCS)
|
|
port->ctrl &= ~OHCI_PORT_PES;
|
|
|
|
ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PES);
|
|
|
|
if (ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PSS)) {
|
|
trace_usb_ohci_port_suspend(portnum);
|
|
}
|
|
|
|
if (ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PRS)) {
|
|
trace_usb_ohci_port_reset(portnum);
|
|
usb_device_reset(port->port.dev);
|
|
port->ctrl &= ~OHCI_PORT_PRS;
|
|
/* ??? Should this also set OHCI_PORT_PESC. */
|
|
port->ctrl |= OHCI_PORT_PES | OHCI_PORT_PRSC;
|
|
}
|
|
|
|
/* Invert order here to ensure in ambiguous case, device is
|
|
* powered up...
|
|
*/
|
|
if (val & OHCI_PORT_LSDA)
|
|
ohci_port_power(ohci, portnum, 0);
|
|
if (val & OHCI_PORT_PPS)
|
|
ohci_port_power(ohci, portnum, 1);
|
|
|
|
if (old_state != port->ctrl)
|
|
ohci_set_interrupt(ohci, OHCI_INTR_RHSC);
|
|
}
|
|
|
|
static uint64_t ohci_mem_read(void *opaque,
|
|
hwaddr addr,
|
|
unsigned size)
|
|
{
|
|
OHCIState *ohci = opaque;
|
|
uint32_t retval;
|
|
|
|
/* Only aligned reads are allowed on OHCI */
|
|
if (addr & 3) {
|
|
trace_usb_ohci_mem_read_unaligned(addr);
|
|
return 0xffffffff;
|
|
} else if (addr >= 0x54 && addr < 0x54 + ohci->num_ports * 4) {
|
|
/* HcRhPortStatus */
|
|
retval = ohci->rhport[(addr - 0x54) >> 2].ctrl | OHCI_PORT_PPS;
|
|
} else {
|
|
switch (addr >> 2) {
|
|
case 0: /* HcRevision */
|
|
retval = 0x10;
|
|
break;
|
|
|
|
case 1: /* HcControl */
|
|
retval = ohci->ctl;
|
|
break;
|
|
|
|
case 2: /* HcCommandStatus */
|
|
retval = ohci->status;
|
|
break;
|
|
|
|
case 3: /* HcInterruptStatus */
|
|
retval = ohci->intr_status;
|
|
break;
|
|
|
|
case 4: /* HcInterruptEnable */
|
|
case 5: /* HcInterruptDisable */
|
|
retval = ohci->intr;
|
|
break;
|
|
|
|
case 6: /* HcHCCA */
|
|
retval = ohci->hcca;
|
|
break;
|
|
|
|
case 7: /* HcPeriodCurrentED */
|
|
retval = ohci->per_cur;
|
|
break;
|
|
|
|
case 8: /* HcControlHeadED */
|
|
retval = ohci->ctrl_head;
|
|
break;
|
|
|
|
case 9: /* HcControlCurrentED */
|
|
retval = ohci->ctrl_cur;
|
|
break;
|
|
|
|
case 10: /* HcBulkHeadED */
|
|
retval = ohci->bulk_head;
|
|
break;
|
|
|
|
case 11: /* HcBulkCurrentED */
|
|
retval = ohci->bulk_cur;
|
|
break;
|
|
|
|
case 12: /* HcDoneHead */
|
|
retval = ohci->done;
|
|
break;
|
|
|
|
case 13: /* HcFmInterretval */
|
|
retval = (ohci->fit << 31) | (ohci->fsmps << 16) | (ohci->fi);
|
|
break;
|
|
|
|
case 14: /* HcFmRemaining */
|
|
retval = ohci_get_frame_remaining(ohci);
|
|
break;
|
|
|
|
case 15: /* HcFmNumber */
|
|
retval = ohci->frame_number;
|
|
break;
|
|
|
|
case 16: /* HcPeriodicStart */
|
|
retval = ohci->pstart;
|
|
break;
|
|
|
|
case 17: /* HcLSThreshold */
|
|
retval = ohci->lst;
|
|
break;
|
|
|
|
case 18: /* HcRhDescriptorA */
|
|
retval = ohci->rhdesc_a;
|
|
break;
|
|
|
|
case 19: /* HcRhDescriptorB */
|
|
retval = ohci->rhdesc_b;
|
|
break;
|
|
|
|
case 20: /* HcRhStatus */
|
|
retval = ohci->rhstatus;
|
|
break;
|
|
|
|
/* PXA27x specific registers */
|
|
case 24: /* HcStatus */
|
|
retval = ohci->hstatus & ohci->hmask;
|
|
break;
|
|
|
|
case 25: /* HcHReset */
|
|
retval = ohci->hreset;
|
|
break;
|
|
|
|
case 26: /* HcHInterruptEnable */
|
|
retval = ohci->hmask;
|
|
break;
|
|
|
|
case 27: /* HcHInterruptTest */
|
|
retval = ohci->htest;
|
|
break;
|
|
|
|
default:
|
|
trace_usb_ohci_mem_read_bad_offset(addr);
|
|
retval = 0xffffffff;
|
|
}
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
static void ohci_mem_write(void *opaque,
|
|
hwaddr addr,
|
|
uint64_t val,
|
|
unsigned size)
|
|
{
|
|
OHCIState *ohci = opaque;
|
|
|
|
/* Only aligned reads are allowed on OHCI */
|
|
if (addr & 3) {
|
|
trace_usb_ohci_mem_write_unaligned(addr);
|
|
return;
|
|
}
|
|
|
|
if (addr >= 0x54 && addr < 0x54 + ohci->num_ports * 4) {
|
|
/* HcRhPortStatus */
|
|
ohci_port_set_status(ohci, (addr - 0x54) >> 2, val);
|
|
return;
|
|
}
|
|
|
|
switch (addr >> 2) {
|
|
case 1: /* HcControl */
|
|
ohci_set_ctl(ohci, val);
|
|
break;
|
|
|
|
case 2: /* HcCommandStatus */
|
|
/* SOC is read-only */
|
|
val = (val & ~OHCI_STATUS_SOC);
|
|
|
|
/* Bits written as '0' remain unchanged in the register */
|
|
ohci->status |= val;
|
|
|
|
if (ohci->status & OHCI_STATUS_HCR)
|
|
ohci_soft_reset(ohci);
|
|
break;
|
|
|
|
case 3: /* HcInterruptStatus */
|
|
ohci->intr_status &= ~val;
|
|
ohci_intr_update(ohci);
|
|
break;
|
|
|
|
case 4: /* HcInterruptEnable */
|
|
ohci->intr |= val;
|
|
ohci_intr_update(ohci);
|
|
break;
|
|
|
|
case 5: /* HcInterruptDisable */
|
|
ohci->intr &= ~val;
|
|
ohci_intr_update(ohci);
|
|
break;
|
|
|
|
case 6: /* HcHCCA */
|
|
ohci->hcca = val & OHCI_HCCA_MASK;
|
|
break;
|
|
|
|
case 7: /* HcPeriodCurrentED */
|
|
/* Ignore writes to this read-only register, Linux does them */
|
|
break;
|
|
|
|
case 8: /* HcControlHeadED */
|
|
ohci->ctrl_head = val & OHCI_EDPTR_MASK;
|
|
break;
|
|
|
|
case 9: /* HcControlCurrentED */
|
|
ohci->ctrl_cur = val & OHCI_EDPTR_MASK;
|
|
break;
|
|
|
|
case 10: /* HcBulkHeadED */
|
|
ohci->bulk_head = val & OHCI_EDPTR_MASK;
|
|
break;
|
|
|
|
case 11: /* HcBulkCurrentED */
|
|
ohci->bulk_cur = val & OHCI_EDPTR_MASK;
|
|
break;
|
|
|
|
case 13: /* HcFmInterval */
|
|
ohci->fsmps = (val & OHCI_FMI_FSMPS) >> 16;
|
|
ohci->fit = (val & OHCI_FMI_FIT) >> 31;
|
|
ohci_set_frame_interval(ohci, val);
|
|
break;
|
|
|
|
case 15: /* HcFmNumber */
|
|
break;
|
|
|
|
case 16: /* HcPeriodicStart */
|
|
ohci->pstart = val & 0xffff;
|
|
break;
|
|
|
|
case 17: /* HcLSThreshold */
|
|
ohci->lst = val & 0xffff;
|
|
break;
|
|
|
|
case 18: /* HcRhDescriptorA */
|
|
ohci->rhdesc_a &= ~OHCI_RHA_RW_MASK;
|
|
ohci->rhdesc_a |= val & OHCI_RHA_RW_MASK;
|
|
break;
|
|
|
|
case 19: /* HcRhDescriptorB */
|
|
break;
|
|
|
|
case 20: /* HcRhStatus */
|
|
ohci_set_hub_status(ohci, val);
|
|
break;
|
|
|
|
/* PXA27x specific registers */
|
|
case 24: /* HcStatus */
|
|
ohci->hstatus &= ~(val & ohci->hmask);
|
|
break;
|
|
|
|
case 25: /* HcHReset */
|
|
ohci->hreset = val & ~OHCI_HRESET_FSBIR;
|
|
if (val & OHCI_HRESET_FSBIR)
|
|
ohci_hard_reset(ohci);
|
|
break;
|
|
|
|
case 26: /* HcHInterruptEnable */
|
|
ohci->hmask = val;
|
|
break;
|
|
|
|
case 27: /* HcHInterruptTest */
|
|
ohci->htest = val;
|
|
break;
|
|
|
|
default:
|
|
trace_usb_ohci_mem_write_bad_offset(addr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void ohci_async_cancel_device(OHCIState *ohci, USBDevice *dev)
|
|
{
|
|
if (ohci->async_td &&
|
|
usb_packet_is_inflight(&ohci->usb_packet) &&
|
|
ohci->usb_packet.ep->dev == dev) {
|
|
usb_cancel_packet(&ohci->usb_packet);
|
|
ohci->async_td = 0;
|
|
}
|
|
}
|
|
|
|
static const MemoryRegionOps ohci_mem_ops = {
|
|
.read = ohci_mem_read,
|
|
.write = ohci_mem_write,
|
|
.endianness = DEVICE_LITTLE_ENDIAN,
|
|
};
|
|
|
|
static USBPortOps ohci_port_ops = {
|
|
.attach = ohci_attach,
|
|
.detach = ohci_detach,
|
|
.child_detach = ohci_child_detach,
|
|
.wakeup = ohci_wakeup,
|
|
.complete = ohci_async_complete_packet,
|
|
};
|
|
|
|
static USBBusOps ohci_bus_ops = {
|
|
};
|
|
|
|
void usb_ohci_init(OHCIState *ohci, DeviceState *dev, uint32_t num_ports,
|
|
dma_addr_t localmem_base, char *masterbus,
|
|
uint32_t firstport, AddressSpace *as,
|
|
void (*ohci_die_fn)(struct OHCIState *), Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
int i;
|
|
|
|
ohci->as = as;
|
|
ohci->ohci_die = ohci_die_fn;
|
|
|
|
if (num_ports > OHCI_MAX_PORTS) {
|
|
error_setg(errp, "OHCI num-ports=%u is too big (limit is %u ports)",
|
|
num_ports, OHCI_MAX_PORTS);
|
|
return;
|
|
}
|
|
|
|
if (usb_frame_time == 0) {
|
|
#ifdef OHCI_TIME_WARP
|
|
usb_frame_time = NANOSECONDS_PER_SECOND;
|
|
usb_bit_time = NANOSECONDS_PER_SECOND / (USB_HZ / 1000);
|
|
#else
|
|
usb_frame_time = NANOSECONDS_PER_SECOND / 1000;
|
|
if (NANOSECONDS_PER_SECOND >= USB_HZ) {
|
|
usb_bit_time = NANOSECONDS_PER_SECOND / USB_HZ;
|
|
} else {
|
|
usb_bit_time = 1;
|
|
}
|
|
#endif
|
|
trace_usb_ohci_init_time(usb_frame_time, usb_bit_time);
|
|
}
|
|
|
|
ohci->num_ports = num_ports;
|
|
if (masterbus) {
|
|
USBPort *ports[OHCI_MAX_PORTS];
|
|
for(i = 0; i < num_ports; i++) {
|
|
ports[i] = &ohci->rhport[i].port;
|
|
}
|
|
usb_register_companion(masterbus, ports, num_ports,
|
|
firstport, ohci, &ohci_port_ops,
|
|
USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL,
|
|
&err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
} else {
|
|
usb_bus_new(&ohci->bus, sizeof(ohci->bus), &ohci_bus_ops, dev);
|
|
for (i = 0; i < num_ports; i++) {
|
|
usb_register_port(&ohci->bus, &ohci->rhport[i].port,
|
|
ohci, i, &ohci_port_ops,
|
|
USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL);
|
|
}
|
|
}
|
|
|
|
memory_region_init_io(&ohci->mem, OBJECT(dev), &ohci_mem_ops,
|
|
ohci, "ohci", 256);
|
|
ohci->localmem_base = localmem_base;
|
|
|
|
ohci->name = object_get_typename(OBJECT(dev));
|
|
usb_packet_init(&ohci->usb_packet);
|
|
|
|
ohci->async_td = 0;
|
|
|
|
ohci->eof_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
|
|
ohci_frame_boundary, ohci);
|
|
}
|
|
|
|
/**
|
|
* A typical OHCI will stop operating and set itself into error state
|
|
* (which can be queried by MMIO) to signal that it got an error.
|
|
*/
|
|
void ohci_sysbus_die(struct OHCIState *ohci)
|
|
{
|
|
trace_usb_ohci_die();
|
|
|
|
ohci_set_interrupt(ohci, OHCI_INTR_UE);
|
|
ohci_bus_stop(ohci);
|
|
}
|
|
|
|
static void ohci_realize_pxa(DeviceState *dev, Error **errp)
|
|
{
|
|
OHCISysBusState *s = SYSBUS_OHCI(dev);
|
|
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
|
|
Error *err = NULL;
|
|
|
|
usb_ohci_init(&s->ohci, dev, s->num_ports, s->dma_offset,
|
|
s->masterbus, s->firstport,
|
|
&address_space_memory, ohci_sysbus_die, &err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
sysbus_init_irq(sbd, &s->ohci.irq);
|
|
sysbus_init_mmio(sbd, &s->ohci.mem);
|
|
}
|
|
|
|
static void usb_ohci_reset_sysbus(DeviceState *dev)
|
|
{
|
|
OHCISysBusState *s = SYSBUS_OHCI(dev);
|
|
OHCIState *ohci = &s->ohci;
|
|
|
|
ohci_hard_reset(ohci);
|
|
}
|
|
|
|
static const VMStateDescription vmstate_ohci_state_port = {
|
|
.name = "ohci-core/port",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_UINT32(ctrl, OHCIPort),
|
|
VMSTATE_END_OF_LIST()
|
|
},
|
|
};
|
|
|
|
static bool ohci_eof_timer_needed(void *opaque)
|
|
{
|
|
OHCIState *ohci = opaque;
|
|
|
|
return timer_pending(ohci->eof_timer);
|
|
}
|
|
|
|
static const VMStateDescription vmstate_ohci_eof_timer = {
|
|
.name = "ohci-core/eof-timer",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.needed = ohci_eof_timer_needed,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_TIMER_PTR(eof_timer, OHCIState),
|
|
VMSTATE_END_OF_LIST()
|
|
},
|
|
};
|
|
|
|
const VMStateDescription vmstate_ohci_state = {
|
|
.name = "ohci-core",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_INT64(sof_time, OHCIState),
|
|
VMSTATE_UINT32(ctl, OHCIState),
|
|
VMSTATE_UINT32(status, OHCIState),
|
|
VMSTATE_UINT32(intr_status, OHCIState),
|
|
VMSTATE_UINT32(intr, OHCIState),
|
|
VMSTATE_UINT32(hcca, OHCIState),
|
|
VMSTATE_UINT32(ctrl_head, OHCIState),
|
|
VMSTATE_UINT32(ctrl_cur, OHCIState),
|
|
VMSTATE_UINT32(bulk_head, OHCIState),
|
|
VMSTATE_UINT32(bulk_cur, OHCIState),
|
|
VMSTATE_UINT32(per_cur, OHCIState),
|
|
VMSTATE_UINT32(done, OHCIState),
|
|
VMSTATE_INT32(done_count, OHCIState),
|
|
VMSTATE_UINT16(fsmps, OHCIState),
|
|
VMSTATE_UINT8(fit, OHCIState),
|
|
VMSTATE_UINT16(fi, OHCIState),
|
|
VMSTATE_UINT8(frt, OHCIState),
|
|
VMSTATE_UINT16(frame_number, OHCIState),
|
|
VMSTATE_UINT16(padding, OHCIState),
|
|
VMSTATE_UINT32(pstart, OHCIState),
|
|
VMSTATE_UINT32(lst, OHCIState),
|
|
VMSTATE_UINT32(rhdesc_a, OHCIState),
|
|
VMSTATE_UINT32(rhdesc_b, OHCIState),
|
|
VMSTATE_UINT32(rhstatus, OHCIState),
|
|
VMSTATE_STRUCT_ARRAY(rhport, OHCIState, OHCI_MAX_PORTS, 0,
|
|
vmstate_ohci_state_port, OHCIPort),
|
|
VMSTATE_UINT32(hstatus, OHCIState),
|
|
VMSTATE_UINT32(hmask, OHCIState),
|
|
VMSTATE_UINT32(hreset, OHCIState),
|
|
VMSTATE_UINT32(htest, OHCIState),
|
|
VMSTATE_UINT32(old_ctl, OHCIState),
|
|
VMSTATE_UINT8_ARRAY(usb_buf, OHCIState, 8192),
|
|
VMSTATE_UINT32(async_td, OHCIState),
|
|
VMSTATE_BOOL(async_complete, OHCIState),
|
|
VMSTATE_END_OF_LIST()
|
|
},
|
|
.subsections = (const VMStateDescription*[]) {
|
|
&vmstate_ohci_eof_timer,
|
|
NULL
|
|
}
|
|
};
|
|
|
|
static Property ohci_sysbus_properties[] = {
|
|
DEFINE_PROP_STRING("masterbus", OHCISysBusState, masterbus),
|
|
DEFINE_PROP_UINT32("num-ports", OHCISysBusState, num_ports, 3),
|
|
DEFINE_PROP_UINT32("firstport", OHCISysBusState, firstport, 0),
|
|
DEFINE_PROP_DMAADDR("dma-offset", OHCISysBusState, dma_offset, 0),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void ohci_sysbus_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
dc->realize = ohci_realize_pxa;
|
|
set_bit(DEVICE_CATEGORY_USB, dc->categories);
|
|
dc->desc = "OHCI USB Controller";
|
|
device_class_set_props(dc, ohci_sysbus_properties);
|
|
dc->reset = usb_ohci_reset_sysbus;
|
|
}
|
|
|
|
static const TypeInfo ohci_sysbus_info = {
|
|
.name = TYPE_SYSBUS_OHCI,
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_size = sizeof(OHCISysBusState),
|
|
.class_init = ohci_sysbus_class_init,
|
|
};
|
|
|
|
static void ohci_register_types(void)
|
|
{
|
|
type_register_static(&ohci_sysbus_info);
|
|
}
|
|
|
|
type_init(ohci_register_types)
|