root / hw / usb-musb.c @ c701b35b
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/*
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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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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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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|
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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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|
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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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struct musb_s {
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qemu_irq *irqs; |
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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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struct musb_ep_s {
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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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struct musb_s *musb;
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USBCallback *delayed_cb[2];
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QEMUTimer *intv_timer[2];
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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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} ep[16];
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} *musb_init(qemu_irq *irqs) |
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{ |
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struct musb_s *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; |
329 |
s->ep[i].musb = s; |
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s->ep[i].epnum = i; |
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} |
332 |
|
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qemu_register_usb_port(&s->port, s, 0, musb_attach);
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return s;
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} |
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|
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static void musb_vbus_set(struct musb_s *s, int level) |
339 |
{ |
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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; |
344 |
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qemu_set_irq(s->irqs[musb_set_vbus], level); |
346 |
} |
347 |
|
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static void musb_intr_set(struct musb_s *s, int line, int level) |
349 |
{ |
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if (!level) {
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s->intr &= ~(1 << line);
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qemu_irq_lower(s->irqs[line]); |
353 |
} else if (s->mask & (1 << line)) { |
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s->intr |= 1 << line;
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qemu_irq_raise(s->irqs[line]); |
356 |
} |
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} |
358 |
|
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static void musb_tx_intr_set(struct musb_s *s, int line, int level) |
360 |
{ |
361 |
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]); |
365 |
} else if (s->tx_mask & (1 << line)) { |
366 |
s->tx_intr |= 1 << line;
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qemu_irq_raise(s->irqs[musb_irq_tx]); |
368 |
} |
369 |
} |
370 |
|
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static void musb_rx_intr_set(struct musb_s *s, int line, int level) |
372 |
{ |
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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]); |
378 |
} else if (s->rx_mask & (1 << line)) { |
379 |
s->rx_intr |= 1 << line;
|
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qemu_irq_raise(s->irqs[musb_irq_rx]); |
381 |
} |
382 |
} else
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musb_tx_intr_set(s, line, level); |
384 |
} |
385 |
|
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uint32_t musb_core_intr_get(struct musb_s *s)
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{ |
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return (s->rx_intr << 15) | s->tx_intr; |
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} |
390 |
|
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void musb_core_intr_clear(struct musb_s *s, uint32_t mask) |
392 |
{ |
393 |
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]); |
397 |
} |
398 |
|
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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]); |
403 |
} |
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} |
405 |
|
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void musb_set_size(struct musb_s *s, int epnum, int size, int is_tx) |
407 |
{ |
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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; |
411 |
s->ep[epnum].fifolen[0] = 0; |
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s->ep[epnum].fifolen[1] = 0; |
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} |
414 |
|
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static void musb_session_update(struct musb_s *s, int prev_dev, int prev_sess) |
416 |
{ |
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int detect_prev = prev_dev && prev_sess;
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int detect = !!s->port.dev && s->session;
|
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|
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if (detect && !detect_prev) {
|
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/* Let's skip the ID pin sense and VBUS sense formalities and
|
422 |
* and signal a successful SRP directly. This should work at least
|
423 |
* for the Linux driver stack. */
|
424 |
musb_intr_set(s, musb_irq_connect, 1);
|
425 |
|
426 |
if (s->port.dev->speed == USB_SPEED_LOW) {
|
427 |
s->devctl &= ~MGC_M_DEVCTL_FSDEV; |
428 |
s->devctl |= MGC_M_DEVCTL_LSDEV; |
429 |
} else {
|
430 |
s->devctl |= MGC_M_DEVCTL_FSDEV; |
431 |
s->devctl &= ~MGC_M_DEVCTL_LSDEV; |
432 |
} |
433 |
|
434 |
/* A-mode? */
|
435 |
s->devctl &= ~MGC_M_DEVCTL_BDEVICE; |
436 |
|
437 |
/* Host-mode bit? */
|
438 |
s->devctl |= MGC_M_DEVCTL_HM; |
439 |
#if 1 |
440 |
musb_vbus_set(s, 1);
|
441 |
#endif
|
442 |
} else if (!detect && detect_prev) { |
443 |
#if 1 |
444 |
musb_vbus_set(s, 0);
|
445 |
#endif
|
446 |
} |
447 |
} |
448 |
|
449 |
/* Attach or detach a device on our only port. */
|
450 |
static void musb_attach(USBPort *port, USBDevice *dev) |
451 |
{ |
452 |
struct musb_s *s = (struct musb_s *) port->opaque; |
453 |
USBDevice *curr; |
454 |
|
455 |
port = &s->port; |
456 |
curr = port->dev; |
457 |
|
458 |
if (dev) {
|
459 |
if (curr) {
|
460 |
usb_attach(port, NULL);
|
461 |
/* TODO: signal some interrupts */
|
462 |
} |
463 |
|
464 |
musb_intr_set(s, musb_irq_vbus_request, 1);
|
465 |
|
466 |
/* Send the attach message to device */
|
467 |
usb_send_msg(dev, USB_MSG_ATTACH); |
468 |
} else if (curr) { |
469 |
/* Send the detach message */
|
470 |
usb_send_msg(curr, USB_MSG_DETACH); |
471 |
|
472 |
musb_intr_set(s, musb_irq_disconnect, 1);
|
473 |
} |
474 |
|
475 |
port->dev = dev; |
476 |
|
477 |
musb_session_update(s, !!curr, s->session); |
478 |
} |
479 |
|
480 |
static inline void musb_cb_tick0(void *opaque) |
481 |
{ |
482 |
struct musb_ep_s *ep = (struct musb_ep_s *) opaque; |
483 |
|
484 |
ep->delayed_cb[0](&ep->packey[0], opaque); |
485 |
} |
486 |
|
487 |
static inline void musb_cb_tick1(void *opaque) |
488 |
{ |
489 |
struct musb_ep_s *ep = (struct musb_ep_s *) opaque; |
490 |
|
491 |
ep->delayed_cb[1](&ep->packey[1], opaque); |
492 |
} |
493 |
|
494 |
#define musb_cb_tick (dir ? musb_cb_tick1 : musb_cb_tick0)
|
495 |
|
496 |
static inline void musb_schedule_cb(USBPacket *packey, void *opaque, int dir) |
497 |
{ |
498 |
struct musb_ep_s *ep = (struct musb_ep_s *) opaque; |
499 |
int timeout = 0; |
500 |
|
501 |
if (ep->status[dir] == USB_RET_NAK)
|
502 |
timeout = ep->timeout[dir]; |
503 |
else if (ep->interrupt[dir]) |
504 |
timeout = 8;
|
505 |
else
|
506 |
return musb_cb_tick(opaque);
|
507 |
|
508 |
if (!ep->intv_timer[dir])
|
509 |
ep->intv_timer[dir] = qemu_new_timer(vm_clock, musb_cb_tick, opaque); |
510 |
|
511 |
qemu_mod_timer(ep->intv_timer[dir], qemu_get_clock(vm_clock) + |
512 |
muldiv64(timeout, ticks_per_sec, 8000));
|
513 |
} |
514 |
|
515 |
static void musb_schedule0_cb(USBPacket *packey, void *opaque) |
516 |
{ |
517 |
return musb_schedule_cb(packey, opaque, 0); |
518 |
} |
519 |
|
520 |
static void musb_schedule1_cb(USBPacket *packey, void *opaque) |
521 |
{ |
522 |
return musb_schedule_cb(packey, opaque, 1); |
523 |
} |
524 |
|
525 |
static int musb_timeout(int ttype, int speed, int val) |
526 |
{ |
527 |
#if 1 |
528 |
return val << 3; |
529 |
#endif
|
530 |
|
531 |
switch (ttype) {
|
532 |
case USB_ENDPOINT_XFER_CONTROL:
|
533 |
if (val < 2) |
534 |
return 0; |
535 |
else if (speed == USB_SPEED_HIGH) |
536 |
return 1 << (val - 1); |
537 |
else
|
538 |
return 8 << (val - 1); |
539 |
|
540 |
case USB_ENDPOINT_XFER_INT:
|
541 |
if (speed == USB_SPEED_HIGH)
|
542 |
if (val < 2) |
543 |
return 0; |
544 |
else
|
545 |
return 1 << (val - 1); |
546 |
else
|
547 |
return val << 3; |
548 |
|
549 |
case USB_ENDPOINT_XFER_BULK:
|
550 |
case USB_ENDPOINT_XFER_ISOC:
|
551 |
if (val < 2) |
552 |
return 0; |
553 |
else if (speed == USB_SPEED_HIGH) |
554 |
return 1 << (val - 1); |
555 |
else
|
556 |
return 8 << (val - 1); |
557 |
/* TODO: what with low-speed Bulk and Isochronous? */
|
558 |
} |
559 |
|
560 |
cpu_abort(cpu_single_env, "bad interval\n");
|
561 |
} |
562 |
|
563 |
static inline void musb_packet(struct musb_s *s, struct musb_ep_s *ep, |
564 |
int epnum, int pid, int len, USBCallback cb, int dir) |
565 |
{ |
566 |
int ret;
|
567 |
int idx = epnum && dir;
|
568 |
int ttype;
|
569 |
|
570 |
/* ep->type[0,1] contains:
|
571 |
* in bits 7:6 the speed (0 - invalid, 1 - high, 2 - full, 3 - slow)
|
572 |
* in bits 5:4 the transfer type (BULK / INT)
|
573 |
* in bits 3:0 the EP num
|
574 |
*/
|
575 |
ttype = epnum ? (ep->type[idx] >> 4) & 3 : 0; |
576 |
|
577 |
ep->timeout[dir] = musb_timeout(ttype, |
578 |
ep->type[idx] >> 6, ep->interval[idx]);
|
579 |
ep->interrupt[dir] = ttype == USB_ENDPOINT_XFER_INT; |
580 |
ep->delayed_cb[dir] = cb; |
581 |
cb = dir ? musb_schedule1_cb : musb_schedule0_cb; |
582 |
|
583 |
ep->packey[dir].pid = pid; |
584 |
/* A wild guess on the FADDR semantics... */
|
585 |
ep->packey[dir].devaddr = ep->faddr[idx]; |
586 |
ep->packey[dir].devep = ep->type[idx] & 0xf;
|
587 |
ep->packey[dir].data = (void *) ep->buf[idx];
|
588 |
ep->packey[dir].len = len; |
589 |
ep->packey[dir].complete_cb = cb; |
590 |
ep->packey[dir].complete_opaque = ep; |
591 |
|
592 |
if (s->port.dev)
|
593 |
ret = s->port.dev->handle_packet(s->port.dev, &ep->packey[dir]); |
594 |
else
|
595 |
ret = USB_RET_NODEV; |
596 |
|
597 |
if (ret == USB_RET_ASYNC) {
|
598 |
ep->status[dir] = len; |
599 |
return;
|
600 |
} |
601 |
|
602 |
ep->status[dir] = ret; |
603 |
usb_packet_complete(&ep->packey[dir]); |
604 |
} |
605 |
|
606 |
static void musb_tx_packet_complete(USBPacket *packey, void *opaque) |
607 |
{ |
608 |
/* Unfortunately we can't use packey->devep because that's the remote
|
609 |
* endpoint number and may be different than our local. */
|
610 |
struct musb_ep_s *ep = (struct musb_ep_s *) opaque; |
611 |
int epnum = ep->epnum;
|
612 |
struct musb_s *s = ep->musb;
|
613 |
|
614 |
ep->fifostart[0] = 0; |
615 |
ep->fifolen[0] = 0; |
616 |
#ifdef CLEAR_NAK
|
617 |
if (ep->status[0] != USB_RET_NAK) { |
618 |
#endif
|
619 |
if (epnum)
|
620 |
ep->csr[0] &= ~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY);
|
621 |
else
|
622 |
ep->csr[0] &= ~MGC_M_CSR0_TXPKTRDY;
|
623 |
#ifdef CLEAR_NAK
|
624 |
} |
625 |
#endif
|
626 |
|
627 |
/* Clear all of the error bits first */
|
628 |
if (epnum)
|
629 |
ep->csr[0] &= ~(MGC_M_TXCSR_H_ERROR | MGC_M_TXCSR_H_RXSTALL |
|
630 |
MGC_M_TXCSR_H_NAKTIMEOUT); |
631 |
else
|
632 |
ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
|
633 |
MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING); |
634 |
|
635 |
if (ep->status[0] == USB_RET_STALL) { |
636 |
/* Command not supported by target! */
|
637 |
ep->status[0] = 0; |
638 |
|
639 |
if (epnum)
|
640 |
ep->csr[0] |= MGC_M_TXCSR_H_RXSTALL;
|
641 |
else
|
642 |
ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
|
643 |
} |
644 |
|
645 |
if (ep->status[0] == USB_RET_NAK) { |
646 |
ep->status[0] = 0; |
647 |
|
648 |
/* NAK timeouts are only generated in Bulk transfers and
|
649 |
* Data-errors in Isochronous. */
|
650 |
if (ep->interrupt[0]) { |
651 |
return;
|
652 |
} |
653 |
|
654 |
if (epnum)
|
655 |
ep->csr[0] |= MGC_M_TXCSR_H_NAKTIMEOUT;
|
656 |
else
|
657 |
ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
|
658 |
} |
659 |
|
660 |
if (ep->status[0] < 0) { |
661 |
if (ep->status[0] == USB_RET_BABBLE) |
662 |
musb_intr_set(s, musb_irq_rst_babble, 1);
|
663 |
|
664 |
/* Pretend we've tried three times already and failed (in
|
665 |
* case of USB_TOKEN_SETUP). */
|
666 |
if (epnum)
|
667 |
ep->csr[0] |= MGC_M_TXCSR_H_ERROR;
|
668 |
else
|
669 |
ep->csr[0] |= MGC_M_CSR0_H_ERROR;
|
670 |
|
671 |
musb_tx_intr_set(s, epnum, 1);
|
672 |
return;
|
673 |
} |
674 |
/* TODO: check len for over/underruns of an OUT packet? */
|
675 |
|
676 |
#ifdef SETUPLEN_HACK
|
677 |
if (!epnum && ep->packey[0].pid == USB_TOKEN_SETUP) |
678 |
s->setup_len = ep->packey[0].data[6]; |
679 |
#endif
|
680 |
|
681 |
/* In DMA mode: if no error, assert DMA request for this EP,
|
682 |
* and skip the interrupt. */
|
683 |
musb_tx_intr_set(s, epnum, 1);
|
684 |
} |
685 |
|
686 |
static void musb_rx_packet_complete(USBPacket *packey, void *opaque) |
687 |
{ |
688 |
/* Unfortunately we can't use packey->devep because that's the remote
|
689 |
* endpoint number and may be different than our local. */
|
690 |
struct musb_ep_s *ep = (struct musb_ep_s *) opaque; |
691 |
int epnum = ep->epnum;
|
692 |
struct musb_s *s = ep->musb;
|
693 |
|
694 |
ep->fifostart[1] = 0; |
695 |
ep->fifolen[1] = 0; |
696 |
|
697 |
#ifdef CLEAR_NAK
|
698 |
if (ep->status[1] != USB_RET_NAK) { |
699 |
#endif
|
700 |
ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
|
701 |
if (!epnum)
|
702 |
ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
|
703 |
#ifdef CLEAR_NAK
|
704 |
} |
705 |
#endif
|
706 |
|
707 |
/* Clear all of the imaginable error bits first */
|
708 |
ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
|
709 |
MGC_M_RXCSR_DATAERROR); |
710 |
if (!epnum)
|
711 |
ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
|
712 |
MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING); |
713 |
|
714 |
if (ep->status[1] == USB_RET_STALL) { |
715 |
ep->status[1] = 0; |
716 |
packey->len = 0;
|
717 |
|
718 |
ep->csr[1] |= MGC_M_RXCSR_H_RXSTALL;
|
719 |
if (!epnum)
|
720 |
ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
|
721 |
} |
722 |
|
723 |
if (ep->status[1] == USB_RET_NAK) { |
724 |
ep->status[1] = 0; |
725 |
|
726 |
/* NAK timeouts are only generated in Bulk transfers and
|
727 |
* Data-errors in Isochronous. */
|
728 |
if (ep->interrupt[1]) |
729 |
return musb_packet(s, ep, epnum, USB_TOKEN_IN,
|
730 |
packey->len, musb_rx_packet_complete, 1);
|
731 |
|
732 |
ep->csr[1] |= MGC_M_RXCSR_DATAERROR;
|
733 |
if (!epnum)
|
734 |
ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
|
735 |
} |
736 |
|
737 |
if (ep->status[1] < 0) { |
738 |
if (ep->status[1] == USB_RET_BABBLE) { |
739 |
musb_intr_set(s, musb_irq_rst_babble, 1);
|
740 |
return;
|
741 |
} |
742 |
|
743 |
/* Pretend we've tried three times already and failed (in
|
744 |
* case of a control transfer). */
|
745 |
ep->csr[1] |= MGC_M_RXCSR_H_ERROR;
|
746 |
if (!epnum)
|
747 |
ep->csr[0] |= MGC_M_CSR0_H_ERROR;
|
748 |
|
749 |
musb_rx_intr_set(s, epnum, 1);
|
750 |
return;
|
751 |
} |
752 |
/* TODO: check len for over/underruns of an OUT packet? */
|
753 |
/* TODO: perhaps make use of e->ext_size[1] here. */
|
754 |
|
755 |
packey->len = ep->status[1];
|
756 |
|
757 |
if (!(ep->csr[1] & (MGC_M_RXCSR_H_RXSTALL | MGC_M_RXCSR_DATAERROR))) { |
758 |
ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
|
759 |
if (!epnum)
|
760 |
ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
|
761 |
|
762 |
ep->rxcount = packey->len; /* XXX: MIN(packey->len, ep->maxp[1]); */
|
763 |
/* In DMA mode: assert DMA request for this EP */
|
764 |
} |
765 |
|
766 |
/* Only if DMA has not been asserted */
|
767 |
musb_rx_intr_set(s, epnum, 1);
|
768 |
} |
769 |
|
770 |
static void musb_tx_rdy(struct musb_s *s, int epnum) |
771 |
{ |
772 |
struct musb_ep_s *ep = s->ep + epnum;
|
773 |
int pid;
|
774 |
int total, valid = 0; |
775 |
|
776 |
ep->fifostart[0] += ep->fifolen[0]; |
777 |
ep->fifolen[0] = 0; |
778 |
|
779 |
/* XXX: how's the total size of the packet retrieved exactly in
|
780 |
* the generic case? */
|
781 |
total = ep->maxp[0] & 0x3ff; |
782 |
|
783 |
if (ep->ext_size[0]) { |
784 |
total = ep->ext_size[0];
|
785 |
ep->ext_size[0] = 0; |
786 |
valid = 1;
|
787 |
} |
788 |
|
789 |
/* If the packet is not fully ready yet, wait for a next segment. */
|
790 |
if (epnum && (ep->fifostart[0] << 2) < total) |
791 |
return;
|
792 |
|
793 |
if (!valid)
|
794 |
total = ep->fifostart[0] << 2; |
795 |
|
796 |
pid = USB_TOKEN_OUT; |
797 |
if (!epnum && (ep->csr[0] & MGC_M_CSR0_H_SETUPPKT)) { |
798 |
pid = USB_TOKEN_SETUP; |
799 |
if (total != 8) |
800 |
printf("%s: illegal SETUPPKT length of %i bytes\n",
|
801 |
__FUNCTION__, total); |
802 |
/* Controller should retry SETUP packets three times on errors
|
803 |
* but it doesn't make sense for us to do that. */
|
804 |
} |
805 |
|
806 |
return musb_packet(s, ep, epnum, pid,
|
807 |
total, musb_tx_packet_complete, 0);
|
808 |
} |
809 |
|
810 |
static void musb_rx_req(struct musb_s *s, int epnum) |
811 |
{ |
812 |
struct musb_ep_s *ep = s->ep + epnum;
|
813 |
int total;
|
814 |
|
815 |
/* If we already have a packet, which didn't fit into the
|
816 |
* 64 bytes of the FIFO, only move the FIFO start and return. (Obsolete) */
|
817 |
if (ep->packey[1].pid == USB_TOKEN_IN && ep->status[1] >= 0 && |
818 |
(ep->fifostart[1] << 2) + ep->rxcount < |
819 |
ep->packey[1].len) {
|
820 |
ep->fifostart[1] += ep->rxcount >> 2; |
821 |
ep->fifolen[1] = 0; |
822 |
|
823 |
ep->rxcount = MIN(ep->packey[0].len - (ep->fifostart[1] << 2), |
824 |
ep->maxp[1]);
|
825 |
|
826 |
ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
|
827 |
if (!epnum)
|
828 |
ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
|
829 |
|
830 |
/* Clear all of the error bits first */
|
831 |
ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
|
832 |
MGC_M_RXCSR_DATAERROR); |
833 |
if (!epnum)
|
834 |
ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
|
835 |
MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING); |
836 |
|
837 |
ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
|
838 |
if (!epnum)
|
839 |
ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
|
840 |
musb_rx_intr_set(s, epnum, 1);
|
841 |
return;
|
842 |
} |
843 |
|
844 |
/* The driver sets maxp[1] to 64 or less because it knows the hardware
|
845 |
* FIFO is this deep. Bigger packets get split in
|
846 |
* usb_generic_handle_packet but we can also do the splitting locally
|
847 |
* for performance. It turns out we can also have a bigger FIFO and
|
848 |
* ignore the limit set in ep->maxp[1]. The Linux MUSB driver deals
|
849 |
* OK with single packets of even 32KB and we avoid splitting, however
|
850 |
* usb_msd.c sometimes sends a packet bigger than what Linux expects
|
851 |
* (e.g. 8192 bytes instead of 4096) and we get an OVERRUN. Splitting
|
852 |
* hides this overrun from Linux. Up to 4096 everything is fine
|
853 |
* though. Currently this is disabled.
|
854 |
*
|
855 |
* XXX: mind ep->fifosize. */
|
856 |
total = MIN(ep->maxp[1] & 0x3ff, sizeof(s->buf)); |
857 |
|
858 |
#ifdef SETUPLEN_HACK
|
859 |
/* Why should *we* do that instead of Linux? */
|
860 |
if (!epnum) {
|
861 |
if (ep->packey[0].devaddr == 2) |
862 |
total = MIN(s->setup_len, 8);
|
863 |
else
|
864 |
total = MIN(s->setup_len, 64);
|
865 |
s->setup_len -= total; |
866 |
} |
867 |
#endif
|
868 |
|
869 |
return musb_packet(s, ep, epnum, USB_TOKEN_IN,
|
870 |
total, musb_rx_packet_complete, 1);
|
871 |
} |
872 |
|
873 |
static void musb_ep_frame_cancel(struct musb_ep_s *ep, int dir) |
874 |
{ |
875 |
if (ep->intv_timer[dir])
|
876 |
qemu_del_timer(ep->intv_timer[dir]); |
877 |
} |
878 |
|
879 |
/* Bus control */
|
880 |
static uint8_t musb_busctl_readb(void *opaque, int ep, int addr) |
881 |
{ |
882 |
struct musb_s *s = (struct musb_s *) opaque; |
883 |
|
884 |
switch (addr) {
|
885 |
/* For USB2.0 HS hubs only */
|
886 |
case MUSB_HDRC_TXHUBADDR:
|
887 |
return s->ep[ep].haddr[0]; |
888 |
case MUSB_HDRC_TXHUBPORT:
|
889 |
return s->ep[ep].hport[0]; |
890 |
case MUSB_HDRC_RXHUBADDR:
|
891 |
return s->ep[ep].haddr[1]; |
892 |
case MUSB_HDRC_RXHUBPORT:
|
893 |
return s->ep[ep].hport[1]; |
894 |
|
895 |
default:
|
896 |
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
897 |
return 0x00; |
898 |
}; |
899 |
} |
900 |
|
901 |
static void musb_busctl_writeb(void *opaque, int ep, int addr, uint8_t value) |
902 |
{ |
903 |
struct musb_s *s = (struct musb_s *) opaque; |
904 |
|
905 |
switch (addr) {
|
906 |
case MUSB_HDRC_TXHUBADDR:
|
907 |
s->ep[ep].haddr[0] = value;
|
908 |
break;
|
909 |
case MUSB_HDRC_TXHUBPORT:
|
910 |
s->ep[ep].hport[0] = value;
|
911 |
break;
|
912 |
case MUSB_HDRC_RXHUBADDR:
|
913 |
s->ep[ep].haddr[1] = value;
|
914 |
break;
|
915 |
case MUSB_HDRC_RXHUBPORT:
|
916 |
s->ep[ep].hport[1] = value;
|
917 |
break;
|
918 |
|
919 |
default:
|
920 |
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
921 |
}; |
922 |
} |
923 |
|
924 |
static uint16_t musb_busctl_readh(void *opaque, int ep, int addr) |
925 |
{ |
926 |
struct musb_s *s = (struct musb_s *) opaque; |
927 |
|
928 |
switch (addr) {
|
929 |
case MUSB_HDRC_TXFUNCADDR:
|
930 |
return s->ep[ep].faddr[0]; |
931 |
case MUSB_HDRC_RXFUNCADDR:
|
932 |
return s->ep[ep].faddr[1]; |
933 |
|
934 |
default:
|
935 |
return musb_busctl_readb(s, ep, addr) |
|
936 |
(musb_busctl_readb(s, ep, addr | 1) << 8); |
937 |
}; |
938 |
} |
939 |
|
940 |
static void musb_busctl_writeh(void *opaque, int ep, int addr, uint16_t value) |
941 |
{ |
942 |
struct musb_s *s = (struct musb_s *) opaque; |
943 |
|
944 |
switch (addr) {
|
945 |
case MUSB_HDRC_TXFUNCADDR:
|
946 |
s->ep[ep].faddr[0] = value;
|
947 |
break;
|
948 |
case MUSB_HDRC_RXFUNCADDR:
|
949 |
s->ep[ep].faddr[1] = value;
|
950 |
break;
|
951 |
|
952 |
default:
|
953 |
musb_busctl_writeb(s, ep, addr, value & 0xff);
|
954 |
musb_busctl_writeb(s, ep, addr | 1, value >> 8); |
955 |
}; |
956 |
} |
957 |
|
958 |
/* Endpoint control */
|
959 |
static uint8_t musb_ep_readb(void *opaque, int ep, int addr) |
960 |
{ |
961 |
struct musb_s *s = (struct musb_s *) opaque; |
962 |
|
963 |
switch (addr) {
|
964 |
case MUSB_HDRC_TXTYPE:
|
965 |
return s->ep[ep].type[0]; |
966 |
case MUSB_HDRC_TXINTERVAL:
|
967 |
return s->ep[ep].interval[0]; |
968 |
case MUSB_HDRC_RXTYPE:
|
969 |
return s->ep[ep].type[1]; |
970 |
case MUSB_HDRC_RXINTERVAL:
|
971 |
return s->ep[ep].interval[1]; |
972 |
case (MUSB_HDRC_FIFOSIZE & ~1): |
973 |
return 0x00; |
974 |
case MUSB_HDRC_FIFOSIZE:
|
975 |
return ep ? s->ep[ep].fifosize : s->ep[ep].config;
|
976 |
|
977 |
default:
|
978 |
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
979 |
return 0x00; |
980 |
}; |
981 |
} |
982 |
|
983 |
static void musb_ep_writeb(void *opaque, int ep, int addr, uint8_t value) |
984 |
{ |
985 |
struct musb_s *s = (struct musb_s *) opaque; |
986 |
|
987 |
switch (addr) {
|
988 |
case MUSB_HDRC_TXTYPE:
|
989 |
s->ep[ep].type[0] = value;
|
990 |
break;
|
991 |
case MUSB_HDRC_TXINTERVAL:
|
992 |
s->ep[ep].interval[0] = value;
|
993 |
musb_ep_frame_cancel(&s->ep[ep], 0);
|
994 |
break;
|
995 |
case MUSB_HDRC_RXTYPE:
|
996 |
s->ep[ep].type[1] = value;
|
997 |
break;
|
998 |
case MUSB_HDRC_RXINTERVAL:
|
999 |
s->ep[ep].interval[1] = value;
|
1000 |
musb_ep_frame_cancel(&s->ep[ep], 1);
|
1001 |
break;
|
1002 |
case (MUSB_HDRC_FIFOSIZE & ~1): |
1003 |
break;
|
1004 |
case MUSB_HDRC_FIFOSIZE:
|
1005 |
printf("%s: somebody messes with fifosize (now %i bytes)\n",
|
1006 |
__FUNCTION__, value); |
1007 |
s->ep[ep].fifosize = value; |
1008 |
break;
|
1009 |
|
1010 |
default:
|
1011 |
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
1012 |
}; |
1013 |
} |
1014 |
|
1015 |
static uint16_t musb_ep_readh(void *opaque, int ep, int addr) |
1016 |
{ |
1017 |
struct musb_s *s = (struct musb_s *) opaque; |
1018 |
uint16_t ret; |
1019 |
|
1020 |
switch (addr) {
|
1021 |
case MUSB_HDRC_TXMAXP:
|
1022 |
return s->ep[ep].maxp[0]; |
1023 |
case MUSB_HDRC_TXCSR:
|
1024 |
return s->ep[ep].csr[0]; |
1025 |
case MUSB_HDRC_RXMAXP:
|
1026 |
return s->ep[ep].maxp[1]; |
1027 |
case MUSB_HDRC_RXCSR:
|
1028 |
ret = s->ep[ep].csr[1];
|
1029 |
|
1030 |
/* TODO: This and other bits probably depend on
|
1031 |
* ep->csr[1] & MGC_M_RXCSR_AUTOCLEAR. */
|
1032 |
if (s->ep[ep].csr[1] & MGC_M_RXCSR_AUTOCLEAR) |
1033 |
s->ep[ep].csr[1] &= ~MGC_M_RXCSR_RXPKTRDY;
|
1034 |
|
1035 |
return ret;
|
1036 |
case MUSB_HDRC_RXCOUNT:
|
1037 |
return s->ep[ep].rxcount;
|
1038 |
|
1039 |
default:
|
1040 |
return musb_ep_readb(s, ep, addr) |
|
1041 |
(musb_ep_readb(s, ep, addr | 1) << 8); |
1042 |
}; |
1043 |
} |
1044 |
|
1045 |
static void musb_ep_writeh(void *opaque, int ep, int addr, uint16_t value) |
1046 |
{ |
1047 |
struct musb_s *s = (struct musb_s *) opaque; |
1048 |
|
1049 |
switch (addr) {
|
1050 |
case MUSB_HDRC_TXMAXP:
|
1051 |
s->ep[ep].maxp[0] = value;
|
1052 |
break;
|
1053 |
case MUSB_HDRC_TXCSR:
|
1054 |
if (ep) {
|
1055 |
s->ep[ep].csr[0] &= value & 0xa6; |
1056 |
s->ep[ep].csr[0] |= value & 0xff59; |
1057 |
} else {
|
1058 |
s->ep[ep].csr[0] &= value & 0x85; |
1059 |
s->ep[ep].csr[0] |= value & 0xf7a; |
1060 |
} |
1061 |
|
1062 |
musb_ep_frame_cancel(&s->ep[ep], 0);
|
1063 |
|
1064 |
if ((ep && (value & MGC_M_TXCSR_FLUSHFIFO)) ||
|
1065 |
(!ep && (value & MGC_M_CSR0_FLUSHFIFO))) { |
1066 |
s->ep[ep].fifolen[0] = 0; |
1067 |
s->ep[ep].fifostart[0] = 0; |
1068 |
if (ep)
|
1069 |
s->ep[ep].csr[0] &=
|
1070 |
~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY); |
1071 |
else
|
1072 |
s->ep[ep].csr[0] &=
|
1073 |
~(MGC_M_CSR0_TXPKTRDY | MGC_M_CSR0_RXPKTRDY); |
1074 |
} |
1075 |
if (
|
1076 |
(ep && |
1077 |
#ifdef CLEAR_NAK
|
1078 |
(value & MGC_M_TXCSR_TXPKTRDY) && |
1079 |
!(value & MGC_M_TXCSR_H_NAKTIMEOUT)) || |
1080 |
#else
|
1081 |
(value & MGC_M_TXCSR_TXPKTRDY)) || |
1082 |
#endif
|
1083 |
(!ep && |
1084 |
#ifdef CLEAR_NAK
|
1085 |
(value & MGC_M_CSR0_TXPKTRDY) && |
1086 |
!(value & MGC_M_CSR0_H_NAKTIMEOUT))) |
1087 |
#else
|
1088 |
(value & MGC_M_CSR0_TXPKTRDY))) |
1089 |
#endif
|
1090 |
musb_tx_rdy(s, ep); |
1091 |
if (!ep &&
|
1092 |
(value & MGC_M_CSR0_H_REQPKT) && |
1093 |
#ifdef CLEAR_NAK
|
1094 |
!(value & (MGC_M_CSR0_H_NAKTIMEOUT | |
1095 |
MGC_M_CSR0_RXPKTRDY))) |
1096 |
#else
|
1097 |
!(value & MGC_M_CSR0_RXPKTRDY)) |
1098 |
#endif
|
1099 |
musb_rx_req(s, ep); |
1100 |
break;
|
1101 |
|
1102 |
case MUSB_HDRC_RXMAXP:
|
1103 |
s->ep[ep].maxp[1] = value;
|
1104 |
break;
|
1105 |
case MUSB_HDRC_RXCSR:
|
1106 |
/* (DMA mode only) */
|
1107 |
if (
|
1108 |
(value & MGC_M_RXCSR_H_AUTOREQ) && |
1109 |
!(value & MGC_M_RXCSR_RXPKTRDY) && |
1110 |
(s->ep[ep].csr[1] & MGC_M_RXCSR_RXPKTRDY))
|
1111 |
value |= MGC_M_RXCSR_H_REQPKT; |
1112 |
|
1113 |
s->ep[ep].csr[1] &= 0x102 | (value & 0x4d); |
1114 |
s->ep[ep].csr[1] |= value & 0xfeb0; |
1115 |
|
1116 |
musb_ep_frame_cancel(&s->ep[ep], 1);
|
1117 |
|
1118 |
if (value & MGC_M_RXCSR_FLUSHFIFO) {
|
1119 |
s->ep[ep].fifolen[1] = 0; |
1120 |
s->ep[ep].fifostart[1] = 0; |
1121 |
s->ep[ep].csr[1] &= ~(MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY);
|
1122 |
/* If double buffering and we have two packets ready, flush
|
1123 |
* only the first one and set up the fifo at the second packet. */
|
1124 |
} |
1125 |
#ifdef CLEAR_NAK
|
1126 |
if ((value & MGC_M_RXCSR_H_REQPKT) && !(value & MGC_M_RXCSR_DATAERROR))
|
1127 |
#else
|
1128 |
if (value & MGC_M_RXCSR_H_REQPKT)
|
1129 |
#endif
|
1130 |
musb_rx_req(s, ep); |
1131 |
break;
|
1132 |
case MUSB_HDRC_RXCOUNT:
|
1133 |
s->ep[ep].rxcount = value; |
1134 |
break;
|
1135 |
|
1136 |
default:
|
1137 |
musb_ep_writeb(s, ep, addr, value & 0xff);
|
1138 |
musb_ep_writeb(s, ep, addr | 1, value >> 8); |
1139 |
}; |
1140 |
} |
1141 |
|
1142 |
/* Generic control */
|
1143 |
static uint32_t musb_readb(void *opaque, target_phys_addr_t addr) |
1144 |
{ |
1145 |
struct musb_s *s = (struct musb_s *) opaque; |
1146 |
int ep, i;
|
1147 |
uint8_t ret; |
1148 |
|
1149 |
switch (addr) {
|
1150 |
case MUSB_HDRC_FADDR:
|
1151 |
return s->faddr;
|
1152 |
case MUSB_HDRC_POWER:
|
1153 |
return s->power;
|
1154 |
case MUSB_HDRC_INTRUSB:
|
1155 |
ret = s->intr; |
1156 |
for (i = 0; i < sizeof(ret) * 8; i ++) |
1157 |
if (ret & (1 << i)) |
1158 |
musb_intr_set(s, i, 0);
|
1159 |
return ret;
|
1160 |
case MUSB_HDRC_INTRUSBE:
|
1161 |
return s->mask;
|
1162 |
case MUSB_HDRC_INDEX:
|
1163 |
return s->idx;
|
1164 |
case MUSB_HDRC_TESTMODE:
|
1165 |
return 0x00; |
1166 |
|
1167 |
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf): |
1168 |
return musb_ep_readb(s, s->idx, addr & 0xf); |
1169 |
|
1170 |
case MUSB_HDRC_DEVCTL:
|
1171 |
return s->devctl;
|
1172 |
|
1173 |
case MUSB_HDRC_TXFIFOSZ:
|
1174 |
case MUSB_HDRC_RXFIFOSZ:
|
1175 |
case MUSB_HDRC_VCTRL:
|
1176 |
/* TODO */
|
1177 |
return 0x00; |
1178 |
|
1179 |
case MUSB_HDRC_HWVERS:
|
1180 |
return (1 << 10) | 400; |
1181 |
|
1182 |
case (MUSB_HDRC_VCTRL | 1): |
1183 |
case (MUSB_HDRC_HWVERS | 1): |
1184 |
case (MUSB_HDRC_DEVCTL | 1): |
1185 |
return 0x00; |
1186 |
|
1187 |
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f): |
1188 |
ep = (addr >> 3) & 0xf; |
1189 |
return musb_busctl_readb(s, ep, addr & 0x7); |
1190 |
|
1191 |
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff): |
1192 |
ep = (addr >> 4) & 0xf; |
1193 |
return musb_ep_readb(s, ep, addr & 0xf); |
1194 |
|
1195 |
default:
|
1196 |
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr); |
1197 |
return 0x00; |
1198 |
}; |
1199 |
} |
1200 |
|
1201 |
static void musb_writeb(void *opaque, target_phys_addr_t addr, uint32_t value) |
1202 |
{ |
1203 |
struct musb_s *s = (struct musb_s *) opaque; |
1204 |
int ep;
|
1205 |
|
1206 |
switch (addr) {
|
1207 |
case MUSB_HDRC_FADDR:
|
1208 |
s->faddr = value & 0x7f;
|
1209 |
break;
|
1210 |
case MUSB_HDRC_POWER:
|
1211 |
s->power = (value & 0xef) | (s->power & 0x10); |
1212 |
/* MGC_M_POWER_RESET is also read-only in Peripheral Mode */
|
1213 |
if ((value & MGC_M_POWER_RESET) && s->port.dev) {
|
1214 |
usb_send_msg(s->port.dev, USB_MSG_RESET); |
1215 |
/* Negotiate high-speed operation if MGC_M_POWER_HSENAB is set. */
|
1216 |
if ((value & MGC_M_POWER_HSENAB) &&
|
1217 |
s->port.dev->speed == USB_SPEED_HIGH) |
1218 |
s->power |= MGC_M_POWER_HSMODE; /* Success */
|
1219 |
/* Restart frame counting. */
|
1220 |
} |
1221 |
if (value & MGC_M_POWER_SUSPENDM) {
|
1222 |
/* When all transfers finish, suspend and if MGC_M_POWER_ENSUSPEND
|
1223 |
* is set, also go into low power mode. Frame counting stops. */
|
1224 |
/* XXX: Cleared when the interrupt register is read */
|
1225 |
} |
1226 |
if (value & MGC_M_POWER_RESUME) {
|
1227 |
/* Wait 20ms and signal resuming on the bus. Frame counting
|
1228 |
* restarts. */
|
1229 |
} |
1230 |
break;
|
1231 |
case MUSB_HDRC_INTRUSB:
|
1232 |
break;
|
1233 |
case MUSB_HDRC_INTRUSBE:
|
1234 |
s->mask = value & 0xff;
|
1235 |
break;
|
1236 |
case MUSB_HDRC_INDEX:
|
1237 |
s->idx = value & 0xf;
|
1238 |
break;
|
1239 |
case MUSB_HDRC_TESTMODE:
|
1240 |
break;
|
1241 |
|
1242 |
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf): |
1243 |
musb_ep_writeb(s, s->idx, addr & 0xf, value);
|
1244 |
break;
|
1245 |
|
1246 |
case MUSB_HDRC_DEVCTL:
|
1247 |
s->session = !!(value & MGC_M_DEVCTL_SESSION); |
1248 |
musb_session_update(s, |
1249 |
!!s->port.dev, |
1250 |
!!(s->devctl & MGC_M_DEVCTL_SESSION)); |
1251 |
|
1252 |
/* It seems this is the only R/W bit in this register? */
|
1253 |
s->devctl &= ~MGC_M_DEVCTL_SESSION; |
1254 |
s->devctl |= value & MGC_M_DEVCTL_SESSION; |
1255 |
break;
|
1256 |
|
1257 |
case MUSB_HDRC_TXFIFOSZ:
|
1258 |
case MUSB_HDRC_RXFIFOSZ:
|
1259 |
case MUSB_HDRC_VCTRL:
|
1260 |
/* TODO */
|
1261 |
break;
|
1262 |
|
1263 |
case (MUSB_HDRC_VCTRL | 1): |
1264 |
case (MUSB_HDRC_DEVCTL | 1): |
1265 |
break;
|
1266 |
|
1267 |
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f): |
1268 |
ep = (addr >> 3) & 0xf; |
1269 |
musb_busctl_writeb(s, ep, addr & 0x7, value);
|
1270 |
break;
|
1271 |
|
1272 |
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff): |
1273 |
ep = (addr >> 4) & 0xf; |
1274 |
musb_ep_writeb(s, ep, addr & 0xf, value);
|
1275 |
break;
|
1276 |
|
1277 |
default:
|
1278 |
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr); |
1279 |
}; |
1280 |
} |
1281 |
|
1282 |
static uint32_t musb_readh(void *opaque, target_phys_addr_t addr) |
1283 |
{ |
1284 |
struct musb_s *s = (struct musb_s *) opaque; |
1285 |
int ep, i;
|
1286 |
uint16_t ret; |
1287 |
|
1288 |
switch (addr) {
|
1289 |
case MUSB_HDRC_INTRTX:
|
1290 |
ret = s->tx_intr; |
1291 |
/* Auto clear */
|
1292 |
for (i = 0; i < sizeof(ret) * 8; i ++) |
1293 |
if (ret & (1 << i)) |
1294 |
musb_tx_intr_set(s, i, 0);
|
1295 |
return ret;
|
1296 |
case MUSB_HDRC_INTRRX:
|
1297 |
ret = s->rx_intr; |
1298 |
/* Auto clear */
|
1299 |
for (i = 0; i < sizeof(ret) * 8; i ++) |
1300 |
if (ret & (1 << i)) |
1301 |
musb_rx_intr_set(s, i, 0);
|
1302 |
return ret;
|
1303 |
case MUSB_HDRC_INTRTXE:
|
1304 |
return s->tx_mask;
|
1305 |
case MUSB_HDRC_INTRRXE:
|
1306 |
return s->rx_mask;
|
1307 |
|
1308 |
case MUSB_HDRC_FRAME:
|
1309 |
/* TODO */
|
1310 |
return 0x0000; |
1311 |
case MUSB_HDRC_TXFIFOADDR:
|
1312 |
return s->ep[s->idx].fifoaddr[0]; |
1313 |
case MUSB_HDRC_RXFIFOADDR:
|
1314 |
return s->ep[s->idx].fifoaddr[1]; |
1315 |
|
1316 |
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf): |
1317 |
return musb_ep_readh(s, s->idx, addr & 0xf); |
1318 |
|
1319 |
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f): |
1320 |
ep = (addr >> 3) & 0xf; |
1321 |
return musb_busctl_readh(s, ep, addr & 0x7); |
1322 |
|
1323 |
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff): |
1324 |
ep = (addr >> 4) & 0xf; |
1325 |
return musb_ep_readh(s, ep, addr & 0xf); |
1326 |
|
1327 |
default:
|
1328 |
return musb_readb(s, addr) | (musb_readb(s, addr | 1) << 8); |
1329 |
}; |
1330 |
} |
1331 |
|
1332 |
static void musb_writeh(void *opaque, target_phys_addr_t addr, uint32_t value) |
1333 |
{ |
1334 |
struct musb_s *s = (struct musb_s *) opaque; |
1335 |
int ep;
|
1336 |
|
1337 |
switch (addr) {
|
1338 |
case MUSB_HDRC_INTRTXE:
|
1339 |
s->tx_mask = value; |
1340 |
/* XXX: the masks seem to apply on the raising edge like with
|
1341 |
* edge-triggered interrupts, thus no need to update. I may be
|
1342 |
* wrong though. */
|
1343 |
break;
|
1344 |
case MUSB_HDRC_INTRRXE:
|
1345 |
s->rx_mask = value; |
1346 |
break;
|
1347 |
|
1348 |
case MUSB_HDRC_FRAME:
|
1349 |
/* TODO */
|
1350 |
break;
|
1351 |
case MUSB_HDRC_TXFIFOADDR:
|
1352 |
s->ep[s->idx].fifoaddr[0] = value;
|
1353 |
s->ep[s->idx].buf[0] =
|
1354 |
s->buf + ((value << 1) & (sizeof(s->buf) / 4 - 1)); |
1355 |
break;
|
1356 |
case MUSB_HDRC_RXFIFOADDR:
|
1357 |
s->ep[s->idx].fifoaddr[1] = value;
|
1358 |
s->ep[s->idx].buf[1] =
|
1359 |
s->buf + ((value << 1) & (sizeof(s->buf) / 4 - 1)); |
1360 |
break;
|
1361 |
|
1362 |
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf): |
1363 |
musb_ep_writeh(s, s->idx, addr & 0xf, value);
|
1364 |
break;
|
1365 |
|
1366 |
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f): |
1367 |
ep = (addr >> 3) & 0xf; |
1368 |
musb_busctl_writeh(s, ep, addr & 0x7, value);
|
1369 |
break;
|
1370 |
|
1371 |
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff): |
1372 |
ep = (addr >> 4) & 0xf; |
1373 |
musb_ep_writeh(s, ep, addr & 0xf, value);
|
1374 |
break;
|
1375 |
|
1376 |
default:
|
1377 |
musb_writeb(s, addr, value & 0xff);
|
1378 |
musb_writeb(s, addr | 1, value >> 8); |
1379 |
}; |
1380 |
} |
1381 |
|
1382 |
static uint32_t musb_readw(void *opaque, target_phys_addr_t addr) |
1383 |
{ |
1384 |
struct musb_s *s = (struct musb_s *) opaque; |
1385 |
struct musb_ep_s *ep;
|
1386 |
int epnum;
|
1387 |
|
1388 |
switch (addr) {
|
1389 |
case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f): |
1390 |
epnum = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf; |
1391 |
ep = s->ep + epnum; |
1392 |
|
1393 |
if (ep->fifolen[1] >= 16) { |
1394 |
/* We have a FIFO underrun */
|
1395 |
printf("%s: EP%i FIFO is now empty, stop reading\n",
|
1396 |
__FUNCTION__, epnum); |
1397 |
return 0x00000000; |
1398 |
} |
1399 |
/* In DMA mode clear RXPKTRDY and set REQPKT automatically
|
1400 |
* (if AUTOREQ is set) */
|
1401 |
|
1402 |
ep->csr[1] &= ~MGC_M_RXCSR_FIFOFULL;
|
1403 |
return ep->buf[1][ep->fifostart[1] + ep->fifolen[1] ++]; |
1404 |
|
1405 |
default:
|
1406 |
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr); |
1407 |
return 0x00000000; |
1408 |
}; |
1409 |
} |
1410 |
|
1411 |
static void musb_writew(void *opaque, target_phys_addr_t addr, uint32_t value) |
1412 |
{ |
1413 |
struct musb_s *s = (struct musb_s *) opaque; |
1414 |
struct musb_ep_s *ep;
|
1415 |
int epnum;
|
1416 |
|
1417 |
switch (addr) {
|
1418 |
case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f): |
1419 |
epnum = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf; |
1420 |
ep = s->ep + epnum; |
1421 |
|
1422 |
if (ep->fifolen[0] >= 16) { |
1423 |
/* We have a FIFO overrun */
|
1424 |
printf("%s: EP%i FIFO exceeded 64 bytes, stop feeding data\n",
|
1425 |
__FUNCTION__, epnum); |
1426 |
break;
|
1427 |
} |
1428 |
|
1429 |
ep->buf[0][ep->fifostart[0] + ep->fifolen[0] ++] = value; |
1430 |
if (epnum)
|
1431 |
ep->csr[0] |= MGC_M_TXCSR_FIFONOTEMPTY;
|
1432 |
break;
|
1433 |
|
1434 |
default:
|
1435 |
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr); |
1436 |
}; |
1437 |
} |
1438 |
|
1439 |
CPUReadMemoryFunc *musb_read[] = { |
1440 |
musb_readb, |
1441 |
musb_readh, |
1442 |
musb_readw, |
1443 |
}; |
1444 |
|
1445 |
CPUWriteMemoryFunc *musb_write[] = { |
1446 |
musb_writeb, |
1447 |
musb_writeh, |
1448 |
musb_writew, |
1449 |
}; |