![Juan Quintela](/assets/img/avatar_default.png)
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
1452 lines
41 KiB
C
1452 lines
41 KiB
C
/*
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* "Inventra" High-speed Dual-Role Controller (MUSB-HDRC), Mentor Graphics,
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* USB2.0 OTG compliant core used in various chips.
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*
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* Copyright (C) 2008 Nokia Corporation
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* Written by Andrzej Zaborowski <andrew@openedhand.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
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*
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* This program 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
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* GNU 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 along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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* Only host-mode and non-DMA accesses are currently supported.
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*/
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#include "qemu-common.h"
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#include "qemu-timer.h"
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#include "usb.h"
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#include "irq.h"
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/* Common USB registers */
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#define MUSB_HDRC_FADDR 0x00 /* 8-bit */
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#define MUSB_HDRC_POWER 0x01 /* 8-bit */
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#define MUSB_HDRC_INTRTX 0x02 /* 16-bit */
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#define MUSB_HDRC_INTRRX 0x04
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#define MUSB_HDRC_INTRTXE 0x06
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#define MUSB_HDRC_INTRRXE 0x08
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#define MUSB_HDRC_INTRUSB 0x0a /* 8 bit */
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#define MUSB_HDRC_INTRUSBE 0x0b /* 8 bit */
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#define MUSB_HDRC_FRAME 0x0c /* 16-bit */
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#define MUSB_HDRC_INDEX 0x0e /* 8 bit */
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#define MUSB_HDRC_TESTMODE 0x0f /* 8 bit */
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/* Per-EP registers in indexed mode */
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#define MUSB_HDRC_EP_IDX 0x10 /* 8-bit */
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/* EP FIFOs */
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#define MUSB_HDRC_FIFO 0x20
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/* Additional Control Registers */
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#define MUSB_HDRC_DEVCTL 0x60 /* 8 bit */
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/* These are indexed */
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#define MUSB_HDRC_TXFIFOSZ 0x62 /* 8 bit (see masks) */
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#define MUSB_HDRC_RXFIFOSZ 0x63 /* 8 bit (see masks) */
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#define MUSB_HDRC_TXFIFOADDR 0x64 /* 16 bit offset shifted right 3 */
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#define MUSB_HDRC_RXFIFOADDR 0x66 /* 16 bit offset shifted right 3 */
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/* Some more registers */
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#define MUSB_HDRC_VCTRL 0x68 /* 8 bit */
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#define MUSB_HDRC_HWVERS 0x6c /* 8 bit */
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/* Added in HDRC 1.9(?) & MHDRC 1.4 */
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/* ULPI pass-through */
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#define MUSB_HDRC_ULPI_VBUSCTL 0x70
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#define MUSB_HDRC_ULPI_REGDATA 0x74
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#define MUSB_HDRC_ULPI_REGADDR 0x75
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#define MUSB_HDRC_ULPI_REGCTL 0x76
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/* Extended config & PHY control */
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#define MUSB_HDRC_ENDCOUNT 0x78 /* 8 bit */
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#define MUSB_HDRC_DMARAMCFG 0x79 /* 8 bit */
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#define MUSB_HDRC_PHYWAIT 0x7a /* 8 bit */
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#define MUSB_HDRC_PHYVPLEN 0x7b /* 8 bit */
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#define MUSB_HDRC_HS_EOF1 0x7c /* 8 bit, units of 546.1 us */
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#define MUSB_HDRC_FS_EOF1 0x7d /* 8 bit, units of 533.3 ns */
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#define MUSB_HDRC_LS_EOF1 0x7e /* 8 bit, units of 1.067 us */
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/* Per-EP BUSCTL registers */
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#define MUSB_HDRC_BUSCTL 0x80
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/* Per-EP registers in flat mode */
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#define MUSB_HDRC_EP 0x100
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/* offsets to registers in flat model */
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#define MUSB_HDRC_TXMAXP 0x00 /* 16 bit apparently */
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#define MUSB_HDRC_TXCSR 0x02 /* 16 bit apparently */
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#define MUSB_HDRC_CSR0 MUSB_HDRC_TXCSR /* re-used for EP0 */
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#define MUSB_HDRC_RXMAXP 0x04 /* 16 bit apparently */
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#define MUSB_HDRC_RXCSR 0x06 /* 16 bit apparently */
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#define MUSB_HDRC_RXCOUNT 0x08 /* 16 bit apparently */
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#define MUSB_HDRC_COUNT0 MUSB_HDRC_RXCOUNT /* re-used for EP0 */
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#define MUSB_HDRC_TXTYPE 0x0a /* 8 bit apparently */
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#define MUSB_HDRC_TYPE0 MUSB_HDRC_TXTYPE /* re-used for EP0 */
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#define MUSB_HDRC_TXINTERVAL 0x0b /* 8 bit apparently */
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#define MUSB_HDRC_NAKLIMIT0 MUSB_HDRC_TXINTERVAL /* re-used for EP0 */
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#define MUSB_HDRC_RXTYPE 0x0c /* 8 bit apparently */
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#define MUSB_HDRC_RXINTERVAL 0x0d /* 8 bit apparently */
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#define MUSB_HDRC_FIFOSIZE 0x0f /* 8 bit apparently */
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#define MUSB_HDRC_CONFIGDATA MGC_O_HDRC_FIFOSIZE /* re-used for EP0 */
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/* "Bus control" registers */
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#define MUSB_HDRC_TXFUNCADDR 0x00
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#define MUSB_HDRC_TXHUBADDR 0x02
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#define MUSB_HDRC_TXHUBPORT 0x03
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#define MUSB_HDRC_RXFUNCADDR 0x04
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#define MUSB_HDRC_RXHUBADDR 0x06
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#define MUSB_HDRC_RXHUBPORT 0x07
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/*
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* MUSBHDRC Register bit masks
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*/
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/* POWER */
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#define MGC_M_POWER_ISOUPDATE 0x80
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#define MGC_M_POWER_SOFTCONN 0x40
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#define MGC_M_POWER_HSENAB 0x20
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#define MGC_M_POWER_HSMODE 0x10
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#define MGC_M_POWER_RESET 0x08
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#define MGC_M_POWER_RESUME 0x04
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#define MGC_M_POWER_SUSPENDM 0x02
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#define MGC_M_POWER_ENSUSPEND 0x01
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/* INTRUSB */
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#define MGC_M_INTR_SUSPEND 0x01
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#define MGC_M_INTR_RESUME 0x02
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#define MGC_M_INTR_RESET 0x04
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#define MGC_M_INTR_BABBLE 0x04
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#define MGC_M_INTR_SOF 0x08
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#define MGC_M_INTR_CONNECT 0x10
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#define MGC_M_INTR_DISCONNECT 0x20
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#define MGC_M_INTR_SESSREQ 0x40
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#define MGC_M_INTR_VBUSERROR 0x80 /* FOR SESSION END */
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#define MGC_M_INTR_EP0 0x01 /* FOR EP0 INTERRUPT */
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/* DEVCTL */
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#define MGC_M_DEVCTL_BDEVICE 0x80
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#define MGC_M_DEVCTL_FSDEV 0x40
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#define MGC_M_DEVCTL_LSDEV 0x20
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#define MGC_M_DEVCTL_VBUS 0x18
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#define MGC_S_DEVCTL_VBUS 3
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#define MGC_M_DEVCTL_HM 0x04
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#define MGC_M_DEVCTL_HR 0x02
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#define MGC_M_DEVCTL_SESSION 0x01
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/* TESTMODE */
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#define MGC_M_TEST_FORCE_HOST 0x80
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#define MGC_M_TEST_FIFO_ACCESS 0x40
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#define MGC_M_TEST_FORCE_FS 0x20
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#define MGC_M_TEST_FORCE_HS 0x10
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#define MGC_M_TEST_PACKET 0x08
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#define MGC_M_TEST_K 0x04
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#define MGC_M_TEST_J 0x02
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#define MGC_M_TEST_SE0_NAK 0x01
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/* CSR0 */
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#define MGC_M_CSR0_FLUSHFIFO 0x0100
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#define MGC_M_CSR0_TXPKTRDY 0x0002
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#define MGC_M_CSR0_RXPKTRDY 0x0001
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/* CSR0 in Peripheral mode */
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#define MGC_M_CSR0_P_SVDSETUPEND 0x0080
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#define MGC_M_CSR0_P_SVDRXPKTRDY 0x0040
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#define MGC_M_CSR0_P_SENDSTALL 0x0020
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#define MGC_M_CSR0_P_SETUPEND 0x0010
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#define MGC_M_CSR0_P_DATAEND 0x0008
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#define MGC_M_CSR0_P_SENTSTALL 0x0004
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/* CSR0 in Host mode */
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#define MGC_M_CSR0_H_NO_PING 0x0800
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#define MGC_M_CSR0_H_WR_DATATOGGLE 0x0400 /* set to allow setting: */
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#define MGC_M_CSR0_H_DATATOGGLE 0x0200 /* data toggle control */
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#define MGC_M_CSR0_H_NAKTIMEOUT 0x0080
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#define MGC_M_CSR0_H_STATUSPKT 0x0040
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#define MGC_M_CSR0_H_REQPKT 0x0020
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#define MGC_M_CSR0_H_ERROR 0x0010
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#define MGC_M_CSR0_H_SETUPPKT 0x0008
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#define MGC_M_CSR0_H_RXSTALL 0x0004
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/* CONFIGDATA */
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#define MGC_M_CONFIGDATA_MPRXE 0x80 /* auto bulk pkt combining */
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#define MGC_M_CONFIGDATA_MPTXE 0x40 /* auto bulk pkt splitting */
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#define MGC_M_CONFIGDATA_BIGENDIAN 0x20
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#define MGC_M_CONFIGDATA_HBRXE 0x10 /* HB-ISO for RX */
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#define MGC_M_CONFIGDATA_HBTXE 0x08 /* HB-ISO for TX */
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#define MGC_M_CONFIGDATA_DYNFIFO 0x04 /* dynamic FIFO sizing */
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#define MGC_M_CONFIGDATA_SOFTCONE 0x02 /* SoftConnect */
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#define MGC_M_CONFIGDATA_UTMIDW 0x01 /* Width, 0 => 8b, 1 => 16b */
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/* TXCSR in Peripheral and Host mode */
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#define MGC_M_TXCSR_AUTOSET 0x8000
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#define MGC_M_TXCSR_ISO 0x4000
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#define MGC_M_TXCSR_MODE 0x2000
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#define MGC_M_TXCSR_DMAENAB 0x1000
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#define MGC_M_TXCSR_FRCDATATOG 0x0800
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#define MGC_M_TXCSR_DMAMODE 0x0400
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#define MGC_M_TXCSR_CLRDATATOG 0x0040
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#define MGC_M_TXCSR_FLUSHFIFO 0x0008
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#define MGC_M_TXCSR_FIFONOTEMPTY 0x0002
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#define MGC_M_TXCSR_TXPKTRDY 0x0001
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/* TXCSR in Peripheral mode */
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#define MGC_M_TXCSR_P_INCOMPTX 0x0080
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#define MGC_M_TXCSR_P_SENTSTALL 0x0020
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#define MGC_M_TXCSR_P_SENDSTALL 0x0010
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#define MGC_M_TXCSR_P_UNDERRUN 0x0004
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/* TXCSR in Host mode */
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#define MGC_M_TXCSR_H_WR_DATATOGGLE 0x0200
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#define MGC_M_TXCSR_H_DATATOGGLE 0x0100
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#define MGC_M_TXCSR_H_NAKTIMEOUT 0x0080
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#define MGC_M_TXCSR_H_RXSTALL 0x0020
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#define MGC_M_TXCSR_H_ERROR 0x0004
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/* RXCSR in Peripheral and Host mode */
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#define MGC_M_RXCSR_AUTOCLEAR 0x8000
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#define MGC_M_RXCSR_DMAENAB 0x2000
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#define MGC_M_RXCSR_DISNYET 0x1000
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#define MGC_M_RXCSR_DMAMODE 0x0800
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#define MGC_M_RXCSR_INCOMPRX 0x0100
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#define MGC_M_RXCSR_CLRDATATOG 0x0080
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#define MGC_M_RXCSR_FLUSHFIFO 0x0010
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#define MGC_M_RXCSR_DATAERROR 0x0008
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#define MGC_M_RXCSR_FIFOFULL 0x0002
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#define MGC_M_RXCSR_RXPKTRDY 0x0001
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/* RXCSR in Peripheral mode */
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#define MGC_M_RXCSR_P_ISO 0x4000
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#define MGC_M_RXCSR_P_SENTSTALL 0x0040
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#define MGC_M_RXCSR_P_SENDSTALL 0x0020
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#define MGC_M_RXCSR_P_OVERRUN 0x0004
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/* RXCSR in Host mode */
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#define MGC_M_RXCSR_H_AUTOREQ 0x4000
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#define MGC_M_RXCSR_H_WR_DATATOGGLE 0x0400
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#define MGC_M_RXCSR_H_DATATOGGLE 0x0200
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#define MGC_M_RXCSR_H_RXSTALL 0x0040
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#define MGC_M_RXCSR_H_REQPKT 0x0020
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#define MGC_M_RXCSR_H_ERROR 0x0004
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/* HUBADDR */
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#define MGC_M_HUBADDR_MULTI_TT 0x80
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/* ULPI: Added in HDRC 1.9(?) & MHDRC 1.4 */
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#define MGC_M_ULPI_VBCTL_USEEXTVBUSIND 0x02
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#define MGC_M_ULPI_VBCTL_USEEXTVBUS 0x01
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#define MGC_M_ULPI_REGCTL_INT_ENABLE 0x08
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#define MGC_M_ULPI_REGCTL_READNOTWRITE 0x04
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#define MGC_M_ULPI_REGCTL_COMPLETE 0x02
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#define MGC_M_ULPI_REGCTL_REG 0x01
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static void musb_attach(USBPort *port, USBDevice *dev);
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typedef struct {
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uint16_t faddr[2];
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uint8_t haddr[2];
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uint8_t hport[2];
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uint16_t csr[2];
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uint16_t maxp[2];
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uint16_t rxcount;
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uint8_t type[2];
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uint8_t interval[2];
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uint8_t config;
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uint8_t fifosize;
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int timeout[2]; /* Always in microframes */
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uint32_t *buf[2];
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int fifolen[2];
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int fifostart[2];
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int fifoaddr[2];
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USBPacket packey[2];
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int status[2];
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int ext_size[2];
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/* For callbacks' use */
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int epnum;
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int interrupt[2];
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MUSBState *musb;
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USBCallback *delayed_cb[2];
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QEMUTimer *intv_timer[2];
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} MUSBEndPoint;
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struct MUSBState {
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qemu_irq *irqs;
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USBBus *bus;
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USBPort port;
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int idx;
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uint8_t devctl;
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uint8_t power;
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uint8_t faddr;
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uint8_t intr;
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uint8_t mask;
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uint16_t tx_intr;
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uint16_t tx_mask;
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uint16_t rx_intr;
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uint16_t rx_mask;
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int setup_len;
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int session;
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uint32_t buf[0x2000];
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/* Duplicating the world since 2008!... probably we should have 32
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* logical, single endpoints instead. */
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MUSBEndPoint ep[16];
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} *musb_init(qemu_irq *irqs)
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{
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MUSBState *s = qemu_mallocz(sizeof(*s));
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int i;
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s->irqs = irqs;
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s->faddr = 0x00;
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s->power = MGC_M_POWER_HSENAB;
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s->tx_intr = 0x0000;
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s->rx_intr = 0x0000;
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s->tx_mask = 0xffff;
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s->rx_mask = 0xffff;
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s->intr = 0x00;
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s->mask = 0x06;
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s->idx = 0;
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/* TODO: _DW */
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s->ep[0].config = MGC_M_CONFIGDATA_SOFTCONE | MGC_M_CONFIGDATA_DYNFIFO;
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for (i = 0; i < 16; i ++) {
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s->ep[i].fifosize = 64;
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s->ep[i].maxp[0] = 0x40;
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s->ep[i].maxp[1] = 0x40;
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s->ep[i].musb = s;
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s->ep[i].epnum = i;
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}
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s->bus = usb_bus_new(NULL /* FIXME */);
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usb_register_port(s->bus, &s->port, s, 0, musb_attach);
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return s;
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}
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static void musb_vbus_set(MUSBState *s, int level)
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{
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if (level)
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s->devctl |= 3 << MGC_S_DEVCTL_VBUS;
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else
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s->devctl &= ~MGC_M_DEVCTL_VBUS;
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qemu_set_irq(s->irqs[musb_set_vbus], level);
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}
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static void musb_intr_set(MUSBState *s, int line, int level)
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{
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if (!level) {
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s->intr &= ~(1 << line);
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qemu_irq_lower(s->irqs[line]);
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} else if (s->mask & (1 << line)) {
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s->intr |= 1 << line;
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qemu_irq_raise(s->irqs[line]);
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}
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}
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static void musb_tx_intr_set(MUSBState *s, int line, int level)
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{
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if (!level) {
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s->tx_intr &= ~(1 << line);
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if (!s->tx_intr)
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qemu_irq_lower(s->irqs[musb_irq_tx]);
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} else if (s->tx_mask & (1 << line)) {
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s->tx_intr |= 1 << line;
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qemu_irq_raise(s->irqs[musb_irq_tx]);
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}
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}
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static void musb_rx_intr_set(MUSBState *s, int line, int level)
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{
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if (line) {
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if (!level) {
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s->rx_intr &= ~(1 << line);
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if (!s->rx_intr)
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qemu_irq_lower(s->irqs[musb_irq_rx]);
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} else if (s->rx_mask & (1 << line)) {
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s->rx_intr |= 1 << line;
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qemu_irq_raise(s->irqs[musb_irq_rx]);
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}
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} else
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musb_tx_intr_set(s, line, level);
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}
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uint32_t musb_core_intr_get(MUSBState *s)
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{
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return (s->rx_intr << 15) | s->tx_intr;
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}
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void musb_core_intr_clear(MUSBState *s, uint32_t mask)
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{
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if (s->rx_intr) {
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s->rx_intr &= mask >> 15;
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if (!s->rx_intr)
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qemu_irq_lower(s->irqs[musb_irq_rx]);
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}
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if (s->tx_intr) {
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s->tx_intr &= mask & 0xffff;
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if (!s->tx_intr)
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qemu_irq_lower(s->irqs[musb_irq_tx]);
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}
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}
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void musb_set_size(MUSBState *s, int epnum, int size, int is_tx)
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{
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s->ep[epnum].ext_size[!is_tx] = size;
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s->ep[epnum].fifostart[0] = 0;
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s->ep[epnum].fifostart[1] = 0;
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s->ep[epnum].fifolen[0] = 0;
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s->ep[epnum].fifolen[1] = 0;
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}
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|
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static void musb_session_update(MUSBState *s, int prev_dev, int prev_sess)
|
|
{
|
|
int detect_prev = prev_dev && prev_sess;
|
|
int detect = !!s->port.dev && s->session;
|
|
|
|
if (detect && !detect_prev) {
|
|
/* Let's skip the ID pin sense and VBUS sense formalities and
|
|
* and signal a successful SRP directly. This should work at least
|
|
* for the Linux driver stack. */
|
|
musb_intr_set(s, musb_irq_connect, 1);
|
|
|
|
if (s->port.dev->speed == USB_SPEED_LOW) {
|
|
s->devctl &= ~MGC_M_DEVCTL_FSDEV;
|
|
s->devctl |= MGC_M_DEVCTL_LSDEV;
|
|
} else {
|
|
s->devctl |= MGC_M_DEVCTL_FSDEV;
|
|
s->devctl &= ~MGC_M_DEVCTL_LSDEV;
|
|
}
|
|
|
|
/* A-mode? */
|
|
s->devctl &= ~MGC_M_DEVCTL_BDEVICE;
|
|
|
|
/* Host-mode bit? */
|
|
s->devctl |= MGC_M_DEVCTL_HM;
|
|
#if 1
|
|
musb_vbus_set(s, 1);
|
|
#endif
|
|
} else if (!detect && detect_prev) {
|
|
#if 1
|
|
musb_vbus_set(s, 0);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/* Attach or detach a device on our only port. */
|
|
static void musb_attach(USBPort *port, USBDevice *dev)
|
|
{
|
|
MUSBState *s = (MUSBState *) port->opaque;
|
|
USBDevice *curr;
|
|
|
|
port = &s->port;
|
|
curr = port->dev;
|
|
|
|
if (dev) {
|
|
if (curr) {
|
|
usb_attach(port, NULL);
|
|
/* TODO: signal some interrupts */
|
|
}
|
|
|
|
musb_intr_set(s, musb_irq_vbus_request, 1);
|
|
|
|
/* Send the attach message to device */
|
|
usb_send_msg(dev, USB_MSG_ATTACH);
|
|
} else if (curr) {
|
|
/* Send the detach message */
|
|
usb_send_msg(curr, USB_MSG_DETACH);
|
|
|
|
musb_intr_set(s, musb_irq_disconnect, 1);
|
|
}
|
|
|
|
port->dev = dev;
|
|
|
|
musb_session_update(s, !!curr, s->session);
|
|
}
|
|
|
|
static inline void musb_cb_tick0(void *opaque)
|
|
{
|
|
MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
|
|
|
|
ep->delayed_cb[0](&ep->packey[0], opaque);
|
|
}
|
|
|
|
static inline void musb_cb_tick1(void *opaque)
|
|
{
|
|
MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
|
|
|
|
ep->delayed_cb[1](&ep->packey[1], opaque);
|
|
}
|
|
|
|
#define musb_cb_tick (dir ? musb_cb_tick1 : musb_cb_tick0)
|
|
|
|
static inline void musb_schedule_cb(USBPacket *packey, void *opaque, int dir)
|
|
{
|
|
MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
|
|
int timeout = 0;
|
|
|
|
if (ep->status[dir] == USB_RET_NAK)
|
|
timeout = ep->timeout[dir];
|
|
else if (ep->interrupt[dir])
|
|
timeout = 8;
|
|
else
|
|
return musb_cb_tick(opaque);
|
|
|
|
if (!ep->intv_timer[dir])
|
|
ep->intv_timer[dir] = qemu_new_timer(vm_clock, musb_cb_tick, opaque);
|
|
|
|
qemu_mod_timer(ep->intv_timer[dir], qemu_get_clock(vm_clock) +
|
|
muldiv64(timeout, get_ticks_per_sec(), 8000));
|
|
}
|
|
|
|
static void musb_schedule0_cb(USBPacket *packey, void *opaque)
|
|
{
|
|
return musb_schedule_cb(packey, opaque, 0);
|
|
}
|
|
|
|
static void musb_schedule1_cb(USBPacket *packey, void *opaque)
|
|
{
|
|
return musb_schedule_cb(packey, opaque, 1);
|
|
}
|
|
|
|
static int musb_timeout(int ttype, int speed, int val)
|
|
{
|
|
#if 1
|
|
return val << 3;
|
|
#endif
|
|
|
|
switch (ttype) {
|
|
case USB_ENDPOINT_XFER_CONTROL:
|
|
if (val < 2)
|
|
return 0;
|
|
else if (speed == USB_SPEED_HIGH)
|
|
return 1 << (val - 1);
|
|
else
|
|
return 8 << (val - 1);
|
|
|
|
case USB_ENDPOINT_XFER_INT:
|
|
if (speed == USB_SPEED_HIGH)
|
|
if (val < 2)
|
|
return 0;
|
|
else
|
|
return 1 << (val - 1);
|
|
else
|
|
return val << 3;
|
|
|
|
case USB_ENDPOINT_XFER_BULK:
|
|
case USB_ENDPOINT_XFER_ISOC:
|
|
if (val < 2)
|
|
return 0;
|
|
else if (speed == USB_SPEED_HIGH)
|
|
return 1 << (val - 1);
|
|
else
|
|
return 8 << (val - 1);
|
|
/* TODO: what with low-speed Bulk and Isochronous? */
|
|
}
|
|
|
|
hw_error("bad interval\n");
|
|
}
|
|
|
|
static inline void musb_packet(MUSBState *s, MUSBEndPoint *ep,
|
|
int epnum, int pid, int len, USBCallback cb, int dir)
|
|
{
|
|
int ret;
|
|
int idx = epnum && dir;
|
|
int ttype;
|
|
|
|
/* ep->type[0,1] contains:
|
|
* in bits 7:6 the speed (0 - invalid, 1 - high, 2 - full, 3 - slow)
|
|
* in bits 5:4 the transfer type (BULK / INT)
|
|
* in bits 3:0 the EP num
|
|
*/
|
|
ttype = epnum ? (ep->type[idx] >> 4) & 3 : 0;
|
|
|
|
ep->timeout[dir] = musb_timeout(ttype,
|
|
ep->type[idx] >> 6, ep->interval[idx]);
|
|
ep->interrupt[dir] = ttype == USB_ENDPOINT_XFER_INT;
|
|
ep->delayed_cb[dir] = cb;
|
|
cb = dir ? musb_schedule1_cb : musb_schedule0_cb;
|
|
|
|
ep->packey[dir].pid = pid;
|
|
/* A wild guess on the FADDR semantics... */
|
|
ep->packey[dir].devaddr = ep->faddr[idx];
|
|
ep->packey[dir].devep = ep->type[idx] & 0xf;
|
|
ep->packey[dir].data = (void *) ep->buf[idx];
|
|
ep->packey[dir].len = len;
|
|
ep->packey[dir].complete_cb = cb;
|
|
ep->packey[dir].complete_opaque = ep;
|
|
|
|
if (s->port.dev)
|
|
ret = s->port.dev->info->handle_packet(s->port.dev, &ep->packey[dir]);
|
|
else
|
|
ret = USB_RET_NODEV;
|
|
|
|
if (ret == USB_RET_ASYNC) {
|
|
ep->status[dir] = len;
|
|
return;
|
|
}
|
|
|
|
ep->status[dir] = ret;
|
|
usb_packet_complete(&ep->packey[dir]);
|
|
}
|
|
|
|
static void musb_tx_packet_complete(USBPacket *packey, void *opaque)
|
|
{
|
|
/* Unfortunately we can't use packey->devep because that's the remote
|
|
* endpoint number and may be different than our local. */
|
|
MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
|
|
int epnum = ep->epnum;
|
|
MUSBState *s = ep->musb;
|
|
|
|
ep->fifostart[0] = 0;
|
|
ep->fifolen[0] = 0;
|
|
#ifdef CLEAR_NAK
|
|
if (ep->status[0] != USB_RET_NAK) {
|
|
#endif
|
|
if (epnum)
|
|
ep->csr[0] &= ~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY);
|
|
else
|
|
ep->csr[0] &= ~MGC_M_CSR0_TXPKTRDY;
|
|
#ifdef CLEAR_NAK
|
|
}
|
|
#endif
|
|
|
|
/* Clear all of the error bits first */
|
|
if (epnum)
|
|
ep->csr[0] &= ~(MGC_M_TXCSR_H_ERROR | MGC_M_TXCSR_H_RXSTALL |
|
|
MGC_M_TXCSR_H_NAKTIMEOUT);
|
|
else
|
|
ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
|
|
MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
|
|
|
|
if (ep->status[0] == USB_RET_STALL) {
|
|
/* Command not supported by target! */
|
|
ep->status[0] = 0;
|
|
|
|
if (epnum)
|
|
ep->csr[0] |= MGC_M_TXCSR_H_RXSTALL;
|
|
else
|
|
ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
|
|
}
|
|
|
|
if (ep->status[0] == USB_RET_NAK) {
|
|
ep->status[0] = 0;
|
|
|
|
/* NAK timeouts are only generated in Bulk transfers and
|
|
* Data-errors in Isochronous. */
|
|
if (ep->interrupt[0]) {
|
|
return;
|
|
}
|
|
|
|
if (epnum)
|
|
ep->csr[0] |= MGC_M_TXCSR_H_NAKTIMEOUT;
|
|
else
|
|
ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
|
|
}
|
|
|
|
if (ep->status[0] < 0) {
|
|
if (ep->status[0] == USB_RET_BABBLE)
|
|
musb_intr_set(s, musb_irq_rst_babble, 1);
|
|
|
|
/* Pretend we've tried three times already and failed (in
|
|
* case of USB_TOKEN_SETUP). */
|
|
if (epnum)
|
|
ep->csr[0] |= MGC_M_TXCSR_H_ERROR;
|
|
else
|
|
ep->csr[0] |= MGC_M_CSR0_H_ERROR;
|
|
|
|
musb_tx_intr_set(s, epnum, 1);
|
|
return;
|
|
}
|
|
/* TODO: check len for over/underruns of an OUT packet? */
|
|
|
|
#ifdef SETUPLEN_HACK
|
|
if (!epnum && ep->packey[0].pid == USB_TOKEN_SETUP)
|
|
s->setup_len = ep->packey[0].data[6];
|
|
#endif
|
|
|
|
/* In DMA mode: if no error, assert DMA request for this EP,
|
|
* and skip the interrupt. */
|
|
musb_tx_intr_set(s, epnum, 1);
|
|
}
|
|
|
|
static void musb_rx_packet_complete(USBPacket *packey, void *opaque)
|
|
{
|
|
/* Unfortunately we can't use packey->devep because that's the remote
|
|
* endpoint number and may be different than our local. */
|
|
MUSBEndPoint *ep = (MUSBEndPoint *) opaque;
|
|
int epnum = ep->epnum;
|
|
MUSBState *s = ep->musb;
|
|
|
|
ep->fifostart[1] = 0;
|
|
ep->fifolen[1] = 0;
|
|
|
|
#ifdef CLEAR_NAK
|
|
if (ep->status[1] != USB_RET_NAK) {
|
|
#endif
|
|
ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
|
|
if (!epnum)
|
|
ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
|
|
#ifdef CLEAR_NAK
|
|
}
|
|
#endif
|
|
|
|
/* Clear all of the imaginable error bits first */
|
|
ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
|
|
MGC_M_RXCSR_DATAERROR);
|
|
if (!epnum)
|
|
ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
|
|
MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
|
|
|
|
if (ep->status[1] == USB_RET_STALL) {
|
|
ep->status[1] = 0;
|
|
packey->len = 0;
|
|
|
|
ep->csr[1] |= MGC_M_RXCSR_H_RXSTALL;
|
|
if (!epnum)
|
|
ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
|
|
}
|
|
|
|
if (ep->status[1] == USB_RET_NAK) {
|
|
ep->status[1] = 0;
|
|
|
|
/* NAK timeouts are only generated in Bulk transfers and
|
|
* Data-errors in Isochronous. */
|
|
if (ep->interrupt[1])
|
|
return musb_packet(s, ep, epnum, USB_TOKEN_IN,
|
|
packey->len, musb_rx_packet_complete, 1);
|
|
|
|
ep->csr[1] |= MGC_M_RXCSR_DATAERROR;
|
|
if (!epnum)
|
|
ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
|
|
}
|
|
|
|
if (ep->status[1] < 0) {
|
|
if (ep->status[1] == USB_RET_BABBLE) {
|
|
musb_intr_set(s, musb_irq_rst_babble, 1);
|
|
return;
|
|
}
|
|
|
|
/* Pretend we've tried three times already and failed (in
|
|
* case of a control transfer). */
|
|
ep->csr[1] |= MGC_M_RXCSR_H_ERROR;
|
|
if (!epnum)
|
|
ep->csr[0] |= MGC_M_CSR0_H_ERROR;
|
|
|
|
musb_rx_intr_set(s, epnum, 1);
|
|
return;
|
|
}
|
|
/* TODO: check len for over/underruns of an OUT packet? */
|
|
/* TODO: perhaps make use of e->ext_size[1] here. */
|
|
|
|
packey->len = ep->status[1];
|
|
|
|
if (!(ep->csr[1] & (MGC_M_RXCSR_H_RXSTALL | MGC_M_RXCSR_DATAERROR))) {
|
|
ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
|
|
if (!epnum)
|
|
ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
|
|
|
|
ep->rxcount = packey->len; /* XXX: MIN(packey->len, ep->maxp[1]); */
|
|
/* In DMA mode: assert DMA request for this EP */
|
|
}
|
|
|
|
/* Only if DMA has not been asserted */
|
|
musb_rx_intr_set(s, epnum, 1);
|
|
}
|
|
|
|
static void musb_tx_rdy(MUSBState *s, int epnum)
|
|
{
|
|
MUSBEndPoint *ep = s->ep + epnum;
|
|
int pid;
|
|
int total, valid = 0;
|
|
|
|
ep->fifostart[0] += ep->fifolen[0];
|
|
ep->fifolen[0] = 0;
|
|
|
|
/* XXX: how's the total size of the packet retrieved exactly in
|
|
* the generic case? */
|
|
total = ep->maxp[0] & 0x3ff;
|
|
|
|
if (ep->ext_size[0]) {
|
|
total = ep->ext_size[0];
|
|
ep->ext_size[0] = 0;
|
|
valid = 1;
|
|
}
|
|
|
|
/* If the packet is not fully ready yet, wait for a next segment. */
|
|
if (epnum && (ep->fifostart[0] << 2) < total)
|
|
return;
|
|
|
|
if (!valid)
|
|
total = ep->fifostart[0] << 2;
|
|
|
|
pid = USB_TOKEN_OUT;
|
|
if (!epnum && (ep->csr[0] & MGC_M_CSR0_H_SETUPPKT)) {
|
|
pid = USB_TOKEN_SETUP;
|
|
if (total != 8)
|
|
printf("%s: illegal SETUPPKT length of %i bytes\n",
|
|
__FUNCTION__, total);
|
|
/* Controller should retry SETUP packets three times on errors
|
|
* but it doesn't make sense for us to do that. */
|
|
}
|
|
|
|
return musb_packet(s, ep, epnum, pid,
|
|
total, musb_tx_packet_complete, 0);
|
|
}
|
|
|
|
static void musb_rx_req(MUSBState *s, int epnum)
|
|
{
|
|
MUSBEndPoint *ep = s->ep + epnum;
|
|
int total;
|
|
|
|
/* If we already have a packet, which didn't fit into the
|
|
* 64 bytes of the FIFO, only move the FIFO start and return. (Obsolete) */
|
|
if (ep->packey[1].pid == USB_TOKEN_IN && ep->status[1] >= 0 &&
|
|
(ep->fifostart[1] << 2) + ep->rxcount <
|
|
ep->packey[1].len) {
|
|
ep->fifostart[1] += ep->rxcount >> 2;
|
|
ep->fifolen[1] = 0;
|
|
|
|
ep->rxcount = MIN(ep->packey[0].len - (ep->fifostart[1] << 2),
|
|
ep->maxp[1]);
|
|
|
|
ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
|
|
if (!epnum)
|
|
ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
|
|
|
|
/* Clear all of the error bits first */
|
|
ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
|
|
MGC_M_RXCSR_DATAERROR);
|
|
if (!epnum)
|
|
ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
|
|
MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
|
|
|
|
ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
|
|
if (!epnum)
|
|
ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
|
|
musb_rx_intr_set(s, epnum, 1);
|
|
return;
|
|
}
|
|
|
|
/* The driver sets maxp[1] to 64 or less because it knows the hardware
|
|
* FIFO is this deep. Bigger packets get split in
|
|
* usb_generic_handle_packet but we can also do the splitting locally
|
|
* for performance. It turns out we can also have a bigger FIFO and
|
|
* ignore the limit set in ep->maxp[1]. The Linux MUSB driver deals
|
|
* OK with single packets of even 32KB and we avoid splitting, however
|
|
* usb_msd.c sometimes sends a packet bigger than what Linux expects
|
|
* (e.g. 8192 bytes instead of 4096) and we get an OVERRUN. Splitting
|
|
* hides this overrun from Linux. Up to 4096 everything is fine
|
|
* though. Currently this is disabled.
|
|
*
|
|
* XXX: mind ep->fifosize. */
|
|
total = MIN(ep->maxp[1] & 0x3ff, sizeof(s->buf));
|
|
|
|
#ifdef SETUPLEN_HACK
|
|
/* Why should *we* do that instead of Linux? */
|
|
if (!epnum) {
|
|
if (ep->packey[0].devaddr == 2)
|
|
total = MIN(s->setup_len, 8);
|
|
else
|
|
total = MIN(s->setup_len, 64);
|
|
s->setup_len -= total;
|
|
}
|
|
#endif
|
|
|
|
return musb_packet(s, ep, epnum, USB_TOKEN_IN,
|
|
total, musb_rx_packet_complete, 1);
|
|
}
|
|
|
|
static void musb_ep_frame_cancel(MUSBEndPoint *ep, int dir)
|
|
{
|
|
if (ep->intv_timer[dir])
|
|
qemu_del_timer(ep->intv_timer[dir]);
|
|
}
|
|
|
|
/* Bus control */
|
|
static uint8_t musb_busctl_readb(void *opaque, int ep, int addr)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
|
|
switch (addr) {
|
|
/* For USB2.0 HS hubs only */
|
|
case MUSB_HDRC_TXHUBADDR:
|
|
return s->ep[ep].haddr[0];
|
|
case MUSB_HDRC_TXHUBPORT:
|
|
return s->ep[ep].hport[0];
|
|
case MUSB_HDRC_RXHUBADDR:
|
|
return s->ep[ep].haddr[1];
|
|
case MUSB_HDRC_RXHUBPORT:
|
|
return s->ep[ep].hport[1];
|
|
|
|
default:
|
|
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
|
return 0x00;
|
|
};
|
|
}
|
|
|
|
static void musb_busctl_writeb(void *opaque, int ep, int addr, uint8_t value)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_TXHUBADDR:
|
|
s->ep[ep].haddr[0] = value;
|
|
break;
|
|
case MUSB_HDRC_TXHUBPORT:
|
|
s->ep[ep].hport[0] = value;
|
|
break;
|
|
case MUSB_HDRC_RXHUBADDR:
|
|
s->ep[ep].haddr[1] = value;
|
|
break;
|
|
case MUSB_HDRC_RXHUBPORT:
|
|
s->ep[ep].hport[1] = value;
|
|
break;
|
|
|
|
default:
|
|
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
|
};
|
|
}
|
|
|
|
static uint16_t musb_busctl_readh(void *opaque, int ep, int addr)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_TXFUNCADDR:
|
|
return s->ep[ep].faddr[0];
|
|
case MUSB_HDRC_RXFUNCADDR:
|
|
return s->ep[ep].faddr[1];
|
|
|
|
default:
|
|
return musb_busctl_readb(s, ep, addr) |
|
|
(musb_busctl_readb(s, ep, addr | 1) << 8);
|
|
};
|
|
}
|
|
|
|
static void musb_busctl_writeh(void *opaque, int ep, int addr, uint16_t value)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_TXFUNCADDR:
|
|
s->ep[ep].faddr[0] = value;
|
|
break;
|
|
case MUSB_HDRC_RXFUNCADDR:
|
|
s->ep[ep].faddr[1] = value;
|
|
break;
|
|
|
|
default:
|
|
musb_busctl_writeb(s, ep, addr, value & 0xff);
|
|
musb_busctl_writeb(s, ep, addr | 1, value >> 8);
|
|
};
|
|
}
|
|
|
|
/* Endpoint control */
|
|
static uint8_t musb_ep_readb(void *opaque, int ep, int addr)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_TXTYPE:
|
|
return s->ep[ep].type[0];
|
|
case MUSB_HDRC_TXINTERVAL:
|
|
return s->ep[ep].interval[0];
|
|
case MUSB_HDRC_RXTYPE:
|
|
return s->ep[ep].type[1];
|
|
case MUSB_HDRC_RXINTERVAL:
|
|
return s->ep[ep].interval[1];
|
|
case (MUSB_HDRC_FIFOSIZE & ~1):
|
|
return 0x00;
|
|
case MUSB_HDRC_FIFOSIZE:
|
|
return ep ? s->ep[ep].fifosize : s->ep[ep].config;
|
|
|
|
default:
|
|
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
|
return 0x00;
|
|
};
|
|
}
|
|
|
|
static void musb_ep_writeb(void *opaque, int ep, int addr, uint8_t value)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_TXTYPE:
|
|
s->ep[ep].type[0] = value;
|
|
break;
|
|
case MUSB_HDRC_TXINTERVAL:
|
|
s->ep[ep].interval[0] = value;
|
|
musb_ep_frame_cancel(&s->ep[ep], 0);
|
|
break;
|
|
case MUSB_HDRC_RXTYPE:
|
|
s->ep[ep].type[1] = value;
|
|
break;
|
|
case MUSB_HDRC_RXINTERVAL:
|
|
s->ep[ep].interval[1] = value;
|
|
musb_ep_frame_cancel(&s->ep[ep], 1);
|
|
break;
|
|
case (MUSB_HDRC_FIFOSIZE & ~1):
|
|
break;
|
|
case MUSB_HDRC_FIFOSIZE:
|
|
printf("%s: somebody messes with fifosize (now %i bytes)\n",
|
|
__FUNCTION__, value);
|
|
s->ep[ep].fifosize = value;
|
|
break;
|
|
|
|
default:
|
|
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
|
};
|
|
}
|
|
|
|
static uint16_t musb_ep_readh(void *opaque, int ep, int addr)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
uint16_t ret;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_TXMAXP:
|
|
return s->ep[ep].maxp[0];
|
|
case MUSB_HDRC_TXCSR:
|
|
return s->ep[ep].csr[0];
|
|
case MUSB_HDRC_RXMAXP:
|
|
return s->ep[ep].maxp[1];
|
|
case MUSB_HDRC_RXCSR:
|
|
ret = s->ep[ep].csr[1];
|
|
|
|
/* TODO: This and other bits probably depend on
|
|
* ep->csr[1] & MGC_M_RXCSR_AUTOCLEAR. */
|
|
if (s->ep[ep].csr[1] & MGC_M_RXCSR_AUTOCLEAR)
|
|
s->ep[ep].csr[1] &= ~MGC_M_RXCSR_RXPKTRDY;
|
|
|
|
return ret;
|
|
case MUSB_HDRC_RXCOUNT:
|
|
return s->ep[ep].rxcount;
|
|
|
|
default:
|
|
return musb_ep_readb(s, ep, addr) |
|
|
(musb_ep_readb(s, ep, addr | 1) << 8);
|
|
};
|
|
}
|
|
|
|
static void musb_ep_writeh(void *opaque, int ep, int addr, uint16_t value)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_TXMAXP:
|
|
s->ep[ep].maxp[0] = value;
|
|
break;
|
|
case MUSB_HDRC_TXCSR:
|
|
if (ep) {
|
|
s->ep[ep].csr[0] &= value & 0xa6;
|
|
s->ep[ep].csr[0] |= value & 0xff59;
|
|
} else {
|
|
s->ep[ep].csr[0] &= value & 0x85;
|
|
s->ep[ep].csr[0] |= value & 0xf7a;
|
|
}
|
|
|
|
musb_ep_frame_cancel(&s->ep[ep], 0);
|
|
|
|
if ((ep && (value & MGC_M_TXCSR_FLUSHFIFO)) ||
|
|
(!ep && (value & MGC_M_CSR0_FLUSHFIFO))) {
|
|
s->ep[ep].fifolen[0] = 0;
|
|
s->ep[ep].fifostart[0] = 0;
|
|
if (ep)
|
|
s->ep[ep].csr[0] &=
|
|
~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY);
|
|
else
|
|
s->ep[ep].csr[0] &=
|
|
~(MGC_M_CSR0_TXPKTRDY | MGC_M_CSR0_RXPKTRDY);
|
|
}
|
|
if (
|
|
(ep &&
|
|
#ifdef CLEAR_NAK
|
|
(value & MGC_M_TXCSR_TXPKTRDY) &&
|
|
!(value & MGC_M_TXCSR_H_NAKTIMEOUT)) ||
|
|
#else
|
|
(value & MGC_M_TXCSR_TXPKTRDY)) ||
|
|
#endif
|
|
(!ep &&
|
|
#ifdef CLEAR_NAK
|
|
(value & MGC_M_CSR0_TXPKTRDY) &&
|
|
!(value & MGC_M_CSR0_H_NAKTIMEOUT)))
|
|
#else
|
|
(value & MGC_M_CSR0_TXPKTRDY)))
|
|
#endif
|
|
musb_tx_rdy(s, ep);
|
|
if (!ep &&
|
|
(value & MGC_M_CSR0_H_REQPKT) &&
|
|
#ifdef CLEAR_NAK
|
|
!(value & (MGC_M_CSR0_H_NAKTIMEOUT |
|
|
MGC_M_CSR0_RXPKTRDY)))
|
|
#else
|
|
!(value & MGC_M_CSR0_RXPKTRDY))
|
|
#endif
|
|
musb_rx_req(s, ep);
|
|
break;
|
|
|
|
case MUSB_HDRC_RXMAXP:
|
|
s->ep[ep].maxp[1] = value;
|
|
break;
|
|
case MUSB_HDRC_RXCSR:
|
|
/* (DMA mode only) */
|
|
if (
|
|
(value & MGC_M_RXCSR_H_AUTOREQ) &&
|
|
!(value & MGC_M_RXCSR_RXPKTRDY) &&
|
|
(s->ep[ep].csr[1] & MGC_M_RXCSR_RXPKTRDY))
|
|
value |= MGC_M_RXCSR_H_REQPKT;
|
|
|
|
s->ep[ep].csr[1] &= 0x102 | (value & 0x4d);
|
|
s->ep[ep].csr[1] |= value & 0xfeb0;
|
|
|
|
musb_ep_frame_cancel(&s->ep[ep], 1);
|
|
|
|
if (value & MGC_M_RXCSR_FLUSHFIFO) {
|
|
s->ep[ep].fifolen[1] = 0;
|
|
s->ep[ep].fifostart[1] = 0;
|
|
s->ep[ep].csr[1] &= ~(MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY);
|
|
/* If double buffering and we have two packets ready, flush
|
|
* only the first one and set up the fifo at the second packet. */
|
|
}
|
|
#ifdef CLEAR_NAK
|
|
if ((value & MGC_M_RXCSR_H_REQPKT) && !(value & MGC_M_RXCSR_DATAERROR))
|
|
#else
|
|
if (value & MGC_M_RXCSR_H_REQPKT)
|
|
#endif
|
|
musb_rx_req(s, ep);
|
|
break;
|
|
case MUSB_HDRC_RXCOUNT:
|
|
s->ep[ep].rxcount = value;
|
|
break;
|
|
|
|
default:
|
|
musb_ep_writeb(s, ep, addr, value & 0xff);
|
|
musb_ep_writeb(s, ep, addr | 1, value >> 8);
|
|
};
|
|
}
|
|
|
|
/* Generic control */
|
|
static uint32_t musb_readb(void *opaque, target_phys_addr_t addr)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
int ep, i;
|
|
uint8_t ret;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_FADDR:
|
|
return s->faddr;
|
|
case MUSB_HDRC_POWER:
|
|
return s->power;
|
|
case MUSB_HDRC_INTRUSB:
|
|
ret = s->intr;
|
|
for (i = 0; i < sizeof(ret) * 8; i ++)
|
|
if (ret & (1 << i))
|
|
musb_intr_set(s, i, 0);
|
|
return ret;
|
|
case MUSB_HDRC_INTRUSBE:
|
|
return s->mask;
|
|
case MUSB_HDRC_INDEX:
|
|
return s->idx;
|
|
case MUSB_HDRC_TESTMODE:
|
|
return 0x00;
|
|
|
|
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
|
|
return musb_ep_readb(s, s->idx, addr & 0xf);
|
|
|
|
case MUSB_HDRC_DEVCTL:
|
|
return s->devctl;
|
|
|
|
case MUSB_HDRC_TXFIFOSZ:
|
|
case MUSB_HDRC_RXFIFOSZ:
|
|
case MUSB_HDRC_VCTRL:
|
|
/* TODO */
|
|
return 0x00;
|
|
|
|
case MUSB_HDRC_HWVERS:
|
|
return (1 << 10) | 400;
|
|
|
|
case (MUSB_HDRC_VCTRL | 1):
|
|
case (MUSB_HDRC_HWVERS | 1):
|
|
case (MUSB_HDRC_DEVCTL | 1):
|
|
return 0x00;
|
|
|
|
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
|
|
ep = (addr >> 3) & 0xf;
|
|
return musb_busctl_readb(s, ep, addr & 0x7);
|
|
|
|
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
|
|
ep = (addr >> 4) & 0xf;
|
|
return musb_ep_readb(s, ep, addr & 0xf);
|
|
|
|
default:
|
|
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr);
|
|
return 0x00;
|
|
};
|
|
}
|
|
|
|
static void musb_writeb(void *opaque, target_phys_addr_t addr, uint32_t value)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
int ep;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_FADDR:
|
|
s->faddr = value & 0x7f;
|
|
break;
|
|
case MUSB_HDRC_POWER:
|
|
s->power = (value & 0xef) | (s->power & 0x10);
|
|
/* MGC_M_POWER_RESET is also read-only in Peripheral Mode */
|
|
if ((value & MGC_M_POWER_RESET) && s->port.dev) {
|
|
usb_send_msg(s->port.dev, USB_MSG_RESET);
|
|
/* Negotiate high-speed operation if MGC_M_POWER_HSENAB is set. */
|
|
if ((value & MGC_M_POWER_HSENAB) &&
|
|
s->port.dev->speed == USB_SPEED_HIGH)
|
|
s->power |= MGC_M_POWER_HSMODE; /* Success */
|
|
/* Restart frame counting. */
|
|
}
|
|
if (value & MGC_M_POWER_SUSPENDM) {
|
|
/* When all transfers finish, suspend and if MGC_M_POWER_ENSUSPEND
|
|
* is set, also go into low power mode. Frame counting stops. */
|
|
/* XXX: Cleared when the interrupt register is read */
|
|
}
|
|
if (value & MGC_M_POWER_RESUME) {
|
|
/* Wait 20ms and signal resuming on the bus. Frame counting
|
|
* restarts. */
|
|
}
|
|
break;
|
|
case MUSB_HDRC_INTRUSB:
|
|
break;
|
|
case MUSB_HDRC_INTRUSBE:
|
|
s->mask = value & 0xff;
|
|
break;
|
|
case MUSB_HDRC_INDEX:
|
|
s->idx = value & 0xf;
|
|
break;
|
|
case MUSB_HDRC_TESTMODE:
|
|
break;
|
|
|
|
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
|
|
musb_ep_writeb(s, s->idx, addr & 0xf, value);
|
|
break;
|
|
|
|
case MUSB_HDRC_DEVCTL:
|
|
s->session = !!(value & MGC_M_DEVCTL_SESSION);
|
|
musb_session_update(s,
|
|
!!s->port.dev,
|
|
!!(s->devctl & MGC_M_DEVCTL_SESSION));
|
|
|
|
/* It seems this is the only R/W bit in this register? */
|
|
s->devctl &= ~MGC_M_DEVCTL_SESSION;
|
|
s->devctl |= value & MGC_M_DEVCTL_SESSION;
|
|
break;
|
|
|
|
case MUSB_HDRC_TXFIFOSZ:
|
|
case MUSB_HDRC_RXFIFOSZ:
|
|
case MUSB_HDRC_VCTRL:
|
|
/* TODO */
|
|
break;
|
|
|
|
case (MUSB_HDRC_VCTRL | 1):
|
|
case (MUSB_HDRC_DEVCTL | 1):
|
|
break;
|
|
|
|
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
|
|
ep = (addr >> 3) & 0xf;
|
|
musb_busctl_writeb(s, ep, addr & 0x7, value);
|
|
break;
|
|
|
|
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
|
|
ep = (addr >> 4) & 0xf;
|
|
musb_ep_writeb(s, ep, addr & 0xf, value);
|
|
break;
|
|
|
|
default:
|
|
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr);
|
|
};
|
|
}
|
|
|
|
static uint32_t musb_readh(void *opaque, target_phys_addr_t addr)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
int ep, i;
|
|
uint16_t ret;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_INTRTX:
|
|
ret = s->tx_intr;
|
|
/* Auto clear */
|
|
for (i = 0; i < sizeof(ret) * 8; i ++)
|
|
if (ret & (1 << i))
|
|
musb_tx_intr_set(s, i, 0);
|
|
return ret;
|
|
case MUSB_HDRC_INTRRX:
|
|
ret = s->rx_intr;
|
|
/* Auto clear */
|
|
for (i = 0; i < sizeof(ret) * 8; i ++)
|
|
if (ret & (1 << i))
|
|
musb_rx_intr_set(s, i, 0);
|
|
return ret;
|
|
case MUSB_HDRC_INTRTXE:
|
|
return s->tx_mask;
|
|
case MUSB_HDRC_INTRRXE:
|
|
return s->rx_mask;
|
|
|
|
case MUSB_HDRC_FRAME:
|
|
/* TODO */
|
|
return 0x0000;
|
|
case MUSB_HDRC_TXFIFOADDR:
|
|
return s->ep[s->idx].fifoaddr[0];
|
|
case MUSB_HDRC_RXFIFOADDR:
|
|
return s->ep[s->idx].fifoaddr[1];
|
|
|
|
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
|
|
return musb_ep_readh(s, s->idx, addr & 0xf);
|
|
|
|
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
|
|
ep = (addr >> 3) & 0xf;
|
|
return musb_busctl_readh(s, ep, addr & 0x7);
|
|
|
|
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
|
|
ep = (addr >> 4) & 0xf;
|
|
return musb_ep_readh(s, ep, addr & 0xf);
|
|
|
|
default:
|
|
return musb_readb(s, addr) | (musb_readb(s, addr | 1) << 8);
|
|
};
|
|
}
|
|
|
|
static void musb_writeh(void *opaque, target_phys_addr_t addr, uint32_t value)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
int ep;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_INTRTXE:
|
|
s->tx_mask = value;
|
|
/* XXX: the masks seem to apply on the raising edge like with
|
|
* edge-triggered interrupts, thus no need to update. I may be
|
|
* wrong though. */
|
|
break;
|
|
case MUSB_HDRC_INTRRXE:
|
|
s->rx_mask = value;
|
|
break;
|
|
|
|
case MUSB_HDRC_FRAME:
|
|
/* TODO */
|
|
break;
|
|
case MUSB_HDRC_TXFIFOADDR:
|
|
s->ep[s->idx].fifoaddr[0] = value;
|
|
s->ep[s->idx].buf[0] =
|
|
s->buf + ((value << 1) & (sizeof(s->buf) / 4 - 1));
|
|
break;
|
|
case MUSB_HDRC_RXFIFOADDR:
|
|
s->ep[s->idx].fifoaddr[1] = value;
|
|
s->ep[s->idx].buf[1] =
|
|
s->buf + ((value << 1) & (sizeof(s->buf) / 4 - 1));
|
|
break;
|
|
|
|
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
|
|
musb_ep_writeh(s, s->idx, addr & 0xf, value);
|
|
break;
|
|
|
|
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
|
|
ep = (addr >> 3) & 0xf;
|
|
musb_busctl_writeh(s, ep, addr & 0x7, value);
|
|
break;
|
|
|
|
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
|
|
ep = (addr >> 4) & 0xf;
|
|
musb_ep_writeh(s, ep, addr & 0xf, value);
|
|
break;
|
|
|
|
default:
|
|
musb_writeb(s, addr, value & 0xff);
|
|
musb_writeb(s, addr | 1, value >> 8);
|
|
};
|
|
}
|
|
|
|
static uint32_t musb_readw(void *opaque, target_phys_addr_t addr)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
MUSBEndPoint *ep;
|
|
int epnum;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
|
|
epnum = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
|
|
ep = s->ep + epnum;
|
|
|
|
if (ep->fifolen[1] >= 16) {
|
|
/* We have a FIFO underrun */
|
|
printf("%s: EP%i FIFO is now empty, stop reading\n",
|
|
__FUNCTION__, epnum);
|
|
return 0x00000000;
|
|
}
|
|
/* In DMA mode clear RXPKTRDY and set REQPKT automatically
|
|
* (if AUTOREQ is set) */
|
|
|
|
ep->csr[1] &= ~MGC_M_RXCSR_FIFOFULL;
|
|
return ep->buf[1][ep->fifostart[1] + ep->fifolen[1] ++];
|
|
|
|
default:
|
|
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr);
|
|
return 0x00000000;
|
|
};
|
|
}
|
|
|
|
static void musb_writew(void *opaque, target_phys_addr_t addr, uint32_t value)
|
|
{
|
|
MUSBState *s = (MUSBState *) opaque;
|
|
MUSBEndPoint *ep;
|
|
int epnum;
|
|
|
|
switch (addr) {
|
|
case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
|
|
epnum = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
|
|
ep = s->ep + epnum;
|
|
|
|
if (ep->fifolen[0] >= 16) {
|
|
/* We have a FIFO overrun */
|
|
printf("%s: EP%i FIFO exceeded 64 bytes, stop feeding data\n",
|
|
__FUNCTION__, epnum);
|
|
break;
|
|
}
|
|
|
|
ep->buf[0][ep->fifostart[0] + ep->fifolen[0] ++] = value;
|
|
if (epnum)
|
|
ep->csr[0] |= MGC_M_TXCSR_FIFONOTEMPTY;
|
|
break;
|
|
|
|
default:
|
|
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr);
|
|
};
|
|
}
|
|
|
|
CPUReadMemoryFunc * const musb_read[] = {
|
|
musb_readb,
|
|
musb_readh,
|
|
musb_readw,
|
|
};
|
|
|
|
CPUWriteMemoryFunc * const musb_write[] = {
|
|
musb_writeb,
|
|
musb_writeh,
|
|
musb_writew,
|
|
};
|