root / hw / usb-musb.c @ 99a0949b
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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 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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|
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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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|
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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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|
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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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|
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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; |
332 |
} |
333 |
|
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s->bus = usb_bus_new(NULL /* FIXME */); |
335 |
usb_register_port(s->bus, &s->port, s, 0, musb_attach);
|
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return s;
|
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} |
339 |
|
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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; |
346 |
|
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qemu_set_irq(s->irqs[musb_set_vbus], level); |
348 |
} |
349 |
|
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static void musb_intr_set(MUSBState *s, int line, int level) |
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{ |
352 |
if (!level) {
|
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s->intr &= ~(1 << line);
|
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qemu_irq_lower(s->irqs[line]); |
355 |
} else if (s->mask & (1 << line)) { |
356 |
s->intr |= 1 << line;
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qemu_irq_raise(s->irqs[line]); |
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} |
359 |
} |
360 |
|
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static void musb_tx_intr_set(MUSBState *s, int line, int level) |
362 |
{ |
363 |
if (!level) {
|
364 |
s->tx_intr &= ~(1 << line);
|
365 |
if (!s->tx_intr)
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qemu_irq_lower(s->irqs[musb_irq_tx]); |
367 |
} else if (s->tx_mask & (1 << line)) { |
368 |
s->tx_intr |= 1 << line;
|
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qemu_irq_raise(s->irqs[musb_irq_tx]); |
370 |
} |
371 |
} |
372 |
|
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static void musb_rx_intr_set(MUSBState *s, int line, int level) |
374 |
{ |
375 |
if (line) {
|
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if (!level) {
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s->rx_intr &= ~(1 << line);
|
378 |
if (!s->rx_intr)
|
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qemu_irq_lower(s->irqs[musb_irq_rx]); |
380 |
} else if (s->rx_mask & (1 << line)) { |
381 |
s->rx_intr |= 1 << line;
|
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qemu_irq_raise(s->irqs[musb_irq_rx]); |
383 |
} |
384 |
} else
|
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musb_tx_intr_set(s, line, level); |
386 |
} |
387 |
|
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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; |
391 |
} |
392 |
|
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void musb_core_intr_clear(MUSBState *s, uint32_t mask)
|
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{ |
395 |
if (s->rx_intr) {
|
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s->rx_intr &= mask >> 15;
|
397 |
if (!s->rx_intr)
|
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qemu_irq_lower(s->irqs[musb_irq_rx]); |
399 |
} |
400 |
|
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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]); |
405 |
} |
406 |
} |
407 |
|
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void musb_set_size(MUSBState *s, int epnum, int size, int is_tx) |
409 |
{ |
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s->ep[epnum].ext_size[!is_tx] = size; |
411 |
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; |
414 |
s->ep[epnum].fifolen[1] = 0; |
415 |
} |
416 |
|
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static void musb_session_update(MUSBState *s, int prev_dev, int prev_sess) |
418 |
{ |
419 |
int detect_prev = prev_dev && prev_sess;
|
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int detect = !!s->port.dev && s->session;
|
421 |
|
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if (detect && !detect_prev) {
|
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/* Let's skip the ID pin sense and VBUS sense formalities and
|
424 |
* and signal a successful SRP directly. This should work at least
|
425 |
* for the Linux driver stack. */
|
426 |
musb_intr_set(s, musb_irq_connect, 1);
|
427 |
|
428 |
if (s->port.dev->speed == USB_SPEED_LOW) {
|
429 |
s->devctl &= ~MGC_M_DEVCTL_FSDEV; |
430 |
s->devctl |= MGC_M_DEVCTL_LSDEV; |
431 |
} else {
|
432 |
s->devctl |= MGC_M_DEVCTL_FSDEV; |
433 |
s->devctl &= ~MGC_M_DEVCTL_LSDEV; |
434 |
} |
435 |
|
436 |
/* A-mode? */
|
437 |
s->devctl &= ~MGC_M_DEVCTL_BDEVICE; |
438 |
|
439 |
/* Host-mode bit? */
|
440 |
s->devctl |= MGC_M_DEVCTL_HM; |
441 |
#if 1 |
442 |
musb_vbus_set(s, 1);
|
443 |
#endif
|
444 |
} else if (!detect && detect_prev) { |
445 |
#if 1 |
446 |
musb_vbus_set(s, 0);
|
447 |
#endif
|
448 |
} |
449 |
} |
450 |
|
451 |
/* Attach or detach a device on our only port. */
|
452 |
static void musb_attach(USBPort *port, USBDevice *dev) |
453 |
{ |
454 |
MUSBState *s = (MUSBState *) port->opaque; |
455 |
USBDevice *curr; |
456 |
|
457 |
port = &s->port; |
458 |
curr = port->dev; |
459 |
|
460 |
if (dev) {
|
461 |
if (curr) {
|
462 |
usb_attach(port, NULL);
|
463 |
/* TODO: signal some interrupts */
|
464 |
} |
465 |
|
466 |
musb_intr_set(s, musb_irq_vbus_request, 1);
|
467 |
|
468 |
/* Send the attach message to device */
|
469 |
usb_send_msg(dev, USB_MSG_ATTACH); |
470 |
} else if (curr) { |
471 |
/* Send the detach message */
|
472 |
usb_send_msg(curr, USB_MSG_DETACH); |
473 |
|
474 |
musb_intr_set(s, musb_irq_disconnect, 1);
|
475 |
} |
476 |
|
477 |
port->dev = dev; |
478 |
|
479 |
musb_session_update(s, !!curr, s->session); |
480 |
} |
481 |
|
482 |
static inline void musb_cb_tick0(void *opaque) |
483 |
{ |
484 |
MUSBEndPoint *ep = (MUSBEndPoint *) opaque; |
485 |
|
486 |
ep->delayed_cb[0](&ep->packey[0], opaque); |
487 |
} |
488 |
|
489 |
static inline void musb_cb_tick1(void *opaque) |
490 |
{ |
491 |
MUSBEndPoint *ep = (MUSBEndPoint *) opaque; |
492 |
|
493 |
ep->delayed_cb[1](&ep->packey[1], opaque); |
494 |
} |
495 |
|
496 |
#define musb_cb_tick (dir ? musb_cb_tick1 : musb_cb_tick0)
|
497 |
|
498 |
static inline void musb_schedule_cb(USBPacket *packey, void *opaque, int dir) |
499 |
{ |
500 |
MUSBEndPoint *ep = (MUSBEndPoint *) opaque; |
501 |
int timeout = 0; |
502 |
|
503 |
if (ep->status[dir] == USB_RET_NAK)
|
504 |
timeout = ep->timeout[dir]; |
505 |
else if (ep->interrupt[dir]) |
506 |
timeout = 8;
|
507 |
else
|
508 |
return musb_cb_tick(opaque);
|
509 |
|
510 |
if (!ep->intv_timer[dir])
|
511 |
ep->intv_timer[dir] = qemu_new_timer(vm_clock, musb_cb_tick, opaque); |
512 |
|
513 |
qemu_mod_timer(ep->intv_timer[dir], qemu_get_clock(vm_clock) + |
514 |
muldiv64(timeout, get_ticks_per_sec(), 8000));
|
515 |
} |
516 |
|
517 |
static void musb_schedule0_cb(USBPacket *packey, void *opaque) |
518 |
{ |
519 |
return musb_schedule_cb(packey, opaque, 0); |
520 |
} |
521 |
|
522 |
static void musb_schedule1_cb(USBPacket *packey, void *opaque) |
523 |
{ |
524 |
return musb_schedule_cb(packey, opaque, 1); |
525 |
} |
526 |
|
527 |
static int musb_timeout(int ttype, int speed, int val) |
528 |
{ |
529 |
#if 1 |
530 |
return val << 3; |
531 |
#endif
|
532 |
|
533 |
switch (ttype) {
|
534 |
case USB_ENDPOINT_XFER_CONTROL:
|
535 |
if (val < 2) |
536 |
return 0; |
537 |
else if (speed == USB_SPEED_HIGH) |
538 |
return 1 << (val - 1); |
539 |
else
|
540 |
return 8 << (val - 1); |
541 |
|
542 |
case USB_ENDPOINT_XFER_INT:
|
543 |
if (speed == USB_SPEED_HIGH)
|
544 |
if (val < 2) |
545 |
return 0; |
546 |
else
|
547 |
return 1 << (val - 1); |
548 |
else
|
549 |
return val << 3; |
550 |
|
551 |
case USB_ENDPOINT_XFER_BULK:
|
552 |
case USB_ENDPOINT_XFER_ISOC:
|
553 |
if (val < 2) |
554 |
return 0; |
555 |
else if (speed == USB_SPEED_HIGH) |
556 |
return 1 << (val - 1); |
557 |
else
|
558 |
return 8 << (val - 1); |
559 |
/* TODO: what with low-speed Bulk and Isochronous? */
|
560 |
} |
561 |
|
562 |
hw_error("bad interval\n");
|
563 |
} |
564 |
|
565 |
static inline void musb_packet(MUSBState *s, MUSBEndPoint *ep, |
566 |
int epnum, int pid, int len, USBCallback cb, int dir) |
567 |
{ |
568 |
int ret;
|
569 |
int idx = epnum && dir;
|
570 |
int ttype;
|
571 |
|
572 |
/* ep->type[0,1] contains:
|
573 |
* in bits 7:6 the speed (0 - invalid, 1 - high, 2 - full, 3 - slow)
|
574 |
* in bits 5:4 the transfer type (BULK / INT)
|
575 |
* in bits 3:0 the EP num
|
576 |
*/
|
577 |
ttype = epnum ? (ep->type[idx] >> 4) & 3 : 0; |
578 |
|
579 |
ep->timeout[dir] = musb_timeout(ttype, |
580 |
ep->type[idx] >> 6, ep->interval[idx]);
|
581 |
ep->interrupt[dir] = ttype == USB_ENDPOINT_XFER_INT; |
582 |
ep->delayed_cb[dir] = cb; |
583 |
cb = dir ? musb_schedule1_cb : musb_schedule0_cb; |
584 |
|
585 |
ep->packey[dir].pid = pid; |
586 |
/* A wild guess on the FADDR semantics... */
|
587 |
ep->packey[dir].devaddr = ep->faddr[idx]; |
588 |
ep->packey[dir].devep = ep->type[idx] & 0xf;
|
589 |
ep->packey[dir].data = (void *) ep->buf[idx];
|
590 |
ep->packey[dir].len = len; |
591 |
ep->packey[dir].complete_cb = cb; |
592 |
ep->packey[dir].complete_opaque = ep; |
593 |
|
594 |
if (s->port.dev)
|
595 |
ret = s->port.dev->info->handle_packet(s->port.dev, &ep->packey[dir]); |
596 |
else
|
597 |
ret = USB_RET_NODEV; |
598 |
|
599 |
if (ret == USB_RET_ASYNC) {
|
600 |
ep->status[dir] = len; |
601 |
return;
|
602 |
} |
603 |
|
604 |
ep->status[dir] = ret; |
605 |
usb_packet_complete(&ep->packey[dir]); |
606 |
} |
607 |
|
608 |
static void musb_tx_packet_complete(USBPacket *packey, void *opaque) |
609 |
{ |
610 |
/* Unfortunately we can't use packey->devep because that's the remote
|
611 |
* endpoint number and may be different than our local. */
|
612 |
MUSBEndPoint *ep = (MUSBEndPoint *) opaque; |
613 |
int epnum = ep->epnum;
|
614 |
MUSBState *s = ep->musb; |
615 |
|
616 |
ep->fifostart[0] = 0; |
617 |
ep->fifolen[0] = 0; |
618 |
#ifdef CLEAR_NAK
|
619 |
if (ep->status[0] != USB_RET_NAK) { |
620 |
#endif
|
621 |
if (epnum)
|
622 |
ep->csr[0] &= ~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY);
|
623 |
else
|
624 |
ep->csr[0] &= ~MGC_M_CSR0_TXPKTRDY;
|
625 |
#ifdef CLEAR_NAK
|
626 |
} |
627 |
#endif
|
628 |
|
629 |
/* Clear all of the error bits first */
|
630 |
if (epnum)
|
631 |
ep->csr[0] &= ~(MGC_M_TXCSR_H_ERROR | MGC_M_TXCSR_H_RXSTALL |
|
632 |
MGC_M_TXCSR_H_NAKTIMEOUT); |
633 |
else
|
634 |
ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
|
635 |
MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING); |
636 |
|
637 |
if (ep->status[0] == USB_RET_STALL) { |
638 |
/* Command not supported by target! */
|
639 |
ep->status[0] = 0; |
640 |
|
641 |
if (epnum)
|
642 |
ep->csr[0] |= MGC_M_TXCSR_H_RXSTALL;
|
643 |
else
|
644 |
ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
|
645 |
} |
646 |
|
647 |
if (ep->status[0] == USB_RET_NAK) { |
648 |
ep->status[0] = 0; |
649 |
|
650 |
/* NAK timeouts are only generated in Bulk transfers and
|
651 |
* Data-errors in Isochronous. */
|
652 |
if (ep->interrupt[0]) { |
653 |
return;
|
654 |
} |
655 |
|
656 |
if (epnum)
|
657 |
ep->csr[0] |= MGC_M_TXCSR_H_NAKTIMEOUT;
|
658 |
else
|
659 |
ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
|
660 |
} |
661 |
|
662 |
if (ep->status[0] < 0) { |
663 |
if (ep->status[0] == USB_RET_BABBLE) |
664 |
musb_intr_set(s, musb_irq_rst_babble, 1);
|
665 |
|
666 |
/* Pretend we've tried three times already and failed (in
|
667 |
* case of USB_TOKEN_SETUP). */
|
668 |
if (epnum)
|
669 |
ep->csr[0] |= MGC_M_TXCSR_H_ERROR;
|
670 |
else
|
671 |
ep->csr[0] |= MGC_M_CSR0_H_ERROR;
|
672 |
|
673 |
musb_tx_intr_set(s, epnum, 1);
|
674 |
return;
|
675 |
} |
676 |
/* TODO: check len for over/underruns of an OUT packet? */
|
677 |
|
678 |
#ifdef SETUPLEN_HACK
|
679 |
if (!epnum && ep->packey[0].pid == USB_TOKEN_SETUP) |
680 |
s->setup_len = ep->packey[0].data[6]; |
681 |
#endif
|
682 |
|
683 |
/* In DMA mode: if no error, assert DMA request for this EP,
|
684 |
* and skip the interrupt. */
|
685 |
musb_tx_intr_set(s, epnum, 1);
|
686 |
} |
687 |
|
688 |
static void musb_rx_packet_complete(USBPacket *packey, void *opaque) |
689 |
{ |
690 |
/* Unfortunately we can't use packey->devep because that's the remote
|
691 |
* endpoint number and may be different than our local. */
|
692 |
MUSBEndPoint *ep = (MUSBEndPoint *) opaque; |
693 |
int epnum = ep->epnum;
|
694 |
MUSBState *s = ep->musb; |
695 |
|
696 |
ep->fifostart[1] = 0; |
697 |
ep->fifolen[1] = 0; |
698 |
|
699 |
#ifdef CLEAR_NAK
|
700 |
if (ep->status[1] != USB_RET_NAK) { |
701 |
#endif
|
702 |
ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
|
703 |
if (!epnum)
|
704 |
ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
|
705 |
#ifdef CLEAR_NAK
|
706 |
} |
707 |
#endif
|
708 |
|
709 |
/* Clear all of the imaginable error bits first */
|
710 |
ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
|
711 |
MGC_M_RXCSR_DATAERROR); |
712 |
if (!epnum)
|
713 |
ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
|
714 |
MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING); |
715 |
|
716 |
if (ep->status[1] == USB_RET_STALL) { |
717 |
ep->status[1] = 0; |
718 |
packey->len = 0;
|
719 |
|
720 |
ep->csr[1] |= MGC_M_RXCSR_H_RXSTALL;
|
721 |
if (!epnum)
|
722 |
ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
|
723 |
} |
724 |
|
725 |
if (ep->status[1] == USB_RET_NAK) { |
726 |
ep->status[1] = 0; |
727 |
|
728 |
/* NAK timeouts are only generated in Bulk transfers and
|
729 |
* Data-errors in Isochronous. */
|
730 |
if (ep->interrupt[1]) |
731 |
return musb_packet(s, ep, epnum, USB_TOKEN_IN,
|
732 |
packey->len, musb_rx_packet_complete, 1);
|
733 |
|
734 |
ep->csr[1] |= MGC_M_RXCSR_DATAERROR;
|
735 |
if (!epnum)
|
736 |
ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
|
737 |
} |
738 |
|
739 |
if (ep->status[1] < 0) { |
740 |
if (ep->status[1] == USB_RET_BABBLE) { |
741 |
musb_intr_set(s, musb_irq_rst_babble, 1);
|
742 |
return;
|
743 |
} |
744 |
|
745 |
/* Pretend we've tried three times already and failed (in
|
746 |
* case of a control transfer). */
|
747 |
ep->csr[1] |= MGC_M_RXCSR_H_ERROR;
|
748 |
if (!epnum)
|
749 |
ep->csr[0] |= MGC_M_CSR0_H_ERROR;
|
750 |
|
751 |
musb_rx_intr_set(s, epnum, 1);
|
752 |
return;
|
753 |
} |
754 |
/* TODO: check len for over/underruns of an OUT packet? */
|
755 |
/* TODO: perhaps make use of e->ext_size[1] here. */
|
756 |
|
757 |
packey->len = ep->status[1];
|
758 |
|
759 |
if (!(ep->csr[1] & (MGC_M_RXCSR_H_RXSTALL | MGC_M_RXCSR_DATAERROR))) { |
760 |
ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
|
761 |
if (!epnum)
|
762 |
ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
|
763 |
|
764 |
ep->rxcount = packey->len; /* XXX: MIN(packey->len, ep->maxp[1]); */
|
765 |
/* In DMA mode: assert DMA request for this EP */
|
766 |
} |
767 |
|
768 |
/* Only if DMA has not been asserted */
|
769 |
musb_rx_intr_set(s, epnum, 1);
|
770 |
} |
771 |
|
772 |
static void musb_tx_rdy(MUSBState *s, int epnum) |
773 |
{ |
774 |
MUSBEndPoint *ep = s->ep + epnum; |
775 |
int pid;
|
776 |
int total, valid = 0; |
777 |
|
778 |
ep->fifostart[0] += ep->fifolen[0]; |
779 |
ep->fifolen[0] = 0; |
780 |
|
781 |
/* XXX: how's the total size of the packet retrieved exactly in
|
782 |
* the generic case? */
|
783 |
total = ep->maxp[0] & 0x3ff; |
784 |
|
785 |
if (ep->ext_size[0]) { |
786 |
total = ep->ext_size[0];
|
787 |
ep->ext_size[0] = 0; |
788 |
valid = 1;
|
789 |
} |
790 |
|
791 |
/* If the packet is not fully ready yet, wait for a next segment. */
|
792 |
if (epnum && (ep->fifostart[0] << 2) < total) |
793 |
return;
|
794 |
|
795 |
if (!valid)
|
796 |
total = ep->fifostart[0] << 2; |
797 |
|
798 |
pid = USB_TOKEN_OUT; |
799 |
if (!epnum && (ep->csr[0] & MGC_M_CSR0_H_SETUPPKT)) { |
800 |
pid = USB_TOKEN_SETUP; |
801 |
if (total != 8) |
802 |
printf("%s: illegal SETUPPKT length of %i bytes\n",
|
803 |
__FUNCTION__, total); |
804 |
/* Controller should retry SETUP packets three times on errors
|
805 |
* but it doesn't make sense for us to do that. */
|
806 |
} |
807 |
|
808 |
return musb_packet(s, ep, epnum, pid,
|
809 |
total, musb_tx_packet_complete, 0);
|
810 |
} |
811 |
|
812 |
static void musb_rx_req(MUSBState *s, int epnum) |
813 |
{ |
814 |
MUSBEndPoint *ep = s->ep + epnum; |
815 |
int total;
|
816 |
|
817 |
/* If we already have a packet, which didn't fit into the
|
818 |
* 64 bytes of the FIFO, only move the FIFO start and return. (Obsolete) */
|
819 |
if (ep->packey[1].pid == USB_TOKEN_IN && ep->status[1] >= 0 && |
820 |
(ep->fifostart[1] << 2) + ep->rxcount < |
821 |
ep->packey[1].len) {
|
822 |
ep->fifostart[1] += ep->rxcount >> 2; |
823 |
ep->fifolen[1] = 0; |
824 |
|
825 |
ep->rxcount = MIN(ep->packey[0].len - (ep->fifostart[1] << 2), |
826 |
ep->maxp[1]);
|
827 |
|
828 |
ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
|
829 |
if (!epnum)
|
830 |
ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
|
831 |
|
832 |
/* Clear all of the error bits first */
|
833 |
ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
|
834 |
MGC_M_RXCSR_DATAERROR); |
835 |
if (!epnum)
|
836 |
ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
|
837 |
MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING); |
838 |
|
839 |
ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
|
840 |
if (!epnum)
|
841 |
ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
|
842 |
musb_rx_intr_set(s, epnum, 1);
|
843 |
return;
|
844 |
} |
845 |
|
846 |
/* The driver sets maxp[1] to 64 or less because it knows the hardware
|
847 |
* FIFO is this deep. Bigger packets get split in
|
848 |
* usb_generic_handle_packet but we can also do the splitting locally
|
849 |
* for performance. It turns out we can also have a bigger FIFO and
|
850 |
* ignore the limit set in ep->maxp[1]. The Linux MUSB driver deals
|
851 |
* OK with single packets of even 32KB and we avoid splitting, however
|
852 |
* usb_msd.c sometimes sends a packet bigger than what Linux expects
|
853 |
* (e.g. 8192 bytes instead of 4096) and we get an OVERRUN. Splitting
|
854 |
* hides this overrun from Linux. Up to 4096 everything is fine
|
855 |
* though. Currently this is disabled.
|
856 |
*
|
857 |
* XXX: mind ep->fifosize. */
|
858 |
total = MIN(ep->maxp[1] & 0x3ff, sizeof(s->buf)); |
859 |
|
860 |
#ifdef SETUPLEN_HACK
|
861 |
/* Why should *we* do that instead of Linux? */
|
862 |
if (!epnum) {
|
863 |
if (ep->packey[0].devaddr == 2) |
864 |
total = MIN(s->setup_len, 8);
|
865 |
else
|
866 |
total = MIN(s->setup_len, 64);
|
867 |
s->setup_len -= total; |
868 |
} |
869 |
#endif
|
870 |
|
871 |
return musb_packet(s, ep, epnum, USB_TOKEN_IN,
|
872 |
total, musb_rx_packet_complete, 1);
|
873 |
} |
874 |
|
875 |
static void musb_ep_frame_cancel(MUSBEndPoint *ep, int dir) |
876 |
{ |
877 |
if (ep->intv_timer[dir])
|
878 |
qemu_del_timer(ep->intv_timer[dir]); |
879 |
} |
880 |
|
881 |
/* Bus control */
|
882 |
static uint8_t musb_busctl_readb(void *opaque, int ep, int addr) |
883 |
{ |
884 |
MUSBState *s = (MUSBState *) opaque; |
885 |
|
886 |
switch (addr) {
|
887 |
/* For USB2.0 HS hubs only */
|
888 |
case MUSB_HDRC_TXHUBADDR:
|
889 |
return s->ep[ep].haddr[0]; |
890 |
case MUSB_HDRC_TXHUBPORT:
|
891 |
return s->ep[ep].hport[0]; |
892 |
case MUSB_HDRC_RXHUBADDR:
|
893 |
return s->ep[ep].haddr[1]; |
894 |
case MUSB_HDRC_RXHUBPORT:
|
895 |
return s->ep[ep].hport[1]; |
896 |
|
897 |
default:
|
898 |
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
899 |
return 0x00; |
900 |
}; |
901 |
} |
902 |
|
903 |
static void musb_busctl_writeb(void *opaque, int ep, int addr, uint8_t value) |
904 |
{ |
905 |
MUSBState *s = (MUSBState *) opaque; |
906 |
|
907 |
switch (addr) {
|
908 |
case MUSB_HDRC_TXHUBADDR:
|
909 |
s->ep[ep].haddr[0] = value;
|
910 |
break;
|
911 |
case MUSB_HDRC_TXHUBPORT:
|
912 |
s->ep[ep].hport[0] = value;
|
913 |
break;
|
914 |
case MUSB_HDRC_RXHUBADDR:
|
915 |
s->ep[ep].haddr[1] = value;
|
916 |
break;
|
917 |
case MUSB_HDRC_RXHUBPORT:
|
918 |
s->ep[ep].hport[1] = value;
|
919 |
break;
|
920 |
|
921 |
default:
|
922 |
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
923 |
}; |
924 |
} |
925 |
|
926 |
static uint16_t musb_busctl_readh(void *opaque, int ep, int addr) |
927 |
{ |
928 |
MUSBState *s = (MUSBState *) opaque; |
929 |
|
930 |
switch (addr) {
|
931 |
case MUSB_HDRC_TXFUNCADDR:
|
932 |
return s->ep[ep].faddr[0]; |
933 |
case MUSB_HDRC_RXFUNCADDR:
|
934 |
return s->ep[ep].faddr[1]; |
935 |
|
936 |
default:
|
937 |
return musb_busctl_readb(s, ep, addr) |
|
938 |
(musb_busctl_readb(s, ep, addr | 1) << 8); |
939 |
}; |
940 |
} |
941 |
|
942 |
static void musb_busctl_writeh(void *opaque, int ep, int addr, uint16_t value) |
943 |
{ |
944 |
MUSBState *s = (MUSBState *) opaque; |
945 |
|
946 |
switch (addr) {
|
947 |
case MUSB_HDRC_TXFUNCADDR:
|
948 |
s->ep[ep].faddr[0] = value;
|
949 |
break;
|
950 |
case MUSB_HDRC_RXFUNCADDR:
|
951 |
s->ep[ep].faddr[1] = value;
|
952 |
break;
|
953 |
|
954 |
default:
|
955 |
musb_busctl_writeb(s, ep, addr, value & 0xff);
|
956 |
musb_busctl_writeb(s, ep, addr | 1, value >> 8); |
957 |
}; |
958 |
} |
959 |
|
960 |
/* Endpoint control */
|
961 |
static uint8_t musb_ep_readb(void *opaque, int ep, int addr) |
962 |
{ |
963 |
MUSBState *s = (MUSBState *) opaque; |
964 |
|
965 |
switch (addr) {
|
966 |
case MUSB_HDRC_TXTYPE:
|
967 |
return s->ep[ep].type[0]; |
968 |
case MUSB_HDRC_TXINTERVAL:
|
969 |
return s->ep[ep].interval[0]; |
970 |
case MUSB_HDRC_RXTYPE:
|
971 |
return s->ep[ep].type[1]; |
972 |
case MUSB_HDRC_RXINTERVAL:
|
973 |
return s->ep[ep].interval[1]; |
974 |
case (MUSB_HDRC_FIFOSIZE & ~1): |
975 |
return 0x00; |
976 |
case MUSB_HDRC_FIFOSIZE:
|
977 |
return ep ? s->ep[ep].fifosize : s->ep[ep].config;
|
978 |
|
979 |
default:
|
980 |
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
981 |
return 0x00; |
982 |
}; |
983 |
} |
984 |
|
985 |
static void musb_ep_writeb(void *opaque, int ep, int addr, uint8_t value) |
986 |
{ |
987 |
MUSBState *s = (MUSBState *) opaque; |
988 |
|
989 |
switch (addr) {
|
990 |
case MUSB_HDRC_TXTYPE:
|
991 |
s->ep[ep].type[0] = value;
|
992 |
break;
|
993 |
case MUSB_HDRC_TXINTERVAL:
|
994 |
s->ep[ep].interval[0] = value;
|
995 |
musb_ep_frame_cancel(&s->ep[ep], 0);
|
996 |
break;
|
997 |
case MUSB_HDRC_RXTYPE:
|
998 |
s->ep[ep].type[1] = value;
|
999 |
break;
|
1000 |
case MUSB_HDRC_RXINTERVAL:
|
1001 |
s->ep[ep].interval[1] = value;
|
1002 |
musb_ep_frame_cancel(&s->ep[ep], 1);
|
1003 |
break;
|
1004 |
case (MUSB_HDRC_FIFOSIZE & ~1): |
1005 |
break;
|
1006 |
case MUSB_HDRC_FIFOSIZE:
|
1007 |
printf("%s: somebody messes with fifosize (now %i bytes)\n",
|
1008 |
__FUNCTION__, value); |
1009 |
s->ep[ep].fifosize = value; |
1010 |
break;
|
1011 |
|
1012 |
default:
|
1013 |
printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
|
1014 |
}; |
1015 |
} |
1016 |
|
1017 |
static uint16_t musb_ep_readh(void *opaque, int ep, int addr) |
1018 |
{ |
1019 |
MUSBState *s = (MUSBState *) opaque; |
1020 |
uint16_t ret; |
1021 |
|
1022 |
switch (addr) {
|
1023 |
case MUSB_HDRC_TXMAXP:
|
1024 |
return s->ep[ep].maxp[0]; |
1025 |
case MUSB_HDRC_TXCSR:
|
1026 |
return s->ep[ep].csr[0]; |
1027 |
case MUSB_HDRC_RXMAXP:
|
1028 |
return s->ep[ep].maxp[1]; |
1029 |
case MUSB_HDRC_RXCSR:
|
1030 |
ret = s->ep[ep].csr[1];
|
1031 |
|
1032 |
/* TODO: This and other bits probably depend on
|
1033 |
* ep->csr[1] & MGC_M_RXCSR_AUTOCLEAR. */
|
1034 |
if (s->ep[ep].csr[1] & MGC_M_RXCSR_AUTOCLEAR) |
1035 |
s->ep[ep].csr[1] &= ~MGC_M_RXCSR_RXPKTRDY;
|
1036 |
|
1037 |
return ret;
|
1038 |
case MUSB_HDRC_RXCOUNT:
|
1039 |
return s->ep[ep].rxcount;
|
1040 |
|
1041 |
default:
|
1042 |
return musb_ep_readb(s, ep, addr) |
|
1043 |
(musb_ep_readb(s, ep, addr | 1) << 8); |
1044 |
}; |
1045 |
} |
1046 |
|
1047 |
static void musb_ep_writeh(void *opaque, int ep, int addr, uint16_t value) |
1048 |
{ |
1049 |
MUSBState *s = (MUSBState *) opaque; |
1050 |
|
1051 |
switch (addr) {
|
1052 |
case MUSB_HDRC_TXMAXP:
|
1053 |
s->ep[ep].maxp[0] = value;
|
1054 |
break;
|
1055 |
case MUSB_HDRC_TXCSR:
|
1056 |
if (ep) {
|
1057 |
s->ep[ep].csr[0] &= value & 0xa6; |
1058 |
s->ep[ep].csr[0] |= value & 0xff59; |
1059 |
} else {
|
1060 |
s->ep[ep].csr[0] &= value & 0x85; |
1061 |
s->ep[ep].csr[0] |= value & 0xf7a; |
1062 |
} |
1063 |
|
1064 |
musb_ep_frame_cancel(&s->ep[ep], 0);
|
1065 |
|
1066 |
if ((ep && (value & MGC_M_TXCSR_FLUSHFIFO)) ||
|
1067 |
(!ep && (value & MGC_M_CSR0_FLUSHFIFO))) { |
1068 |
s->ep[ep].fifolen[0] = 0; |
1069 |
s->ep[ep].fifostart[0] = 0; |
1070 |
if (ep)
|
1071 |
s->ep[ep].csr[0] &=
|
1072 |
~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY); |
1073 |
else
|
1074 |
s->ep[ep].csr[0] &=
|
1075 |
~(MGC_M_CSR0_TXPKTRDY | MGC_M_CSR0_RXPKTRDY); |
1076 |
} |
1077 |
if (
|
1078 |
(ep && |
1079 |
#ifdef CLEAR_NAK
|
1080 |
(value & MGC_M_TXCSR_TXPKTRDY) && |
1081 |
!(value & MGC_M_TXCSR_H_NAKTIMEOUT)) || |
1082 |
#else
|
1083 |
(value & MGC_M_TXCSR_TXPKTRDY)) || |
1084 |
#endif
|
1085 |
(!ep && |
1086 |
#ifdef CLEAR_NAK
|
1087 |
(value & MGC_M_CSR0_TXPKTRDY) && |
1088 |
!(value & MGC_M_CSR0_H_NAKTIMEOUT))) |
1089 |
#else
|
1090 |
(value & MGC_M_CSR0_TXPKTRDY))) |
1091 |
#endif
|
1092 |
musb_tx_rdy(s, ep); |
1093 |
if (!ep &&
|
1094 |
(value & MGC_M_CSR0_H_REQPKT) && |
1095 |
#ifdef CLEAR_NAK
|
1096 |
!(value & (MGC_M_CSR0_H_NAKTIMEOUT | |
1097 |
MGC_M_CSR0_RXPKTRDY))) |
1098 |
#else
|
1099 |
!(value & MGC_M_CSR0_RXPKTRDY)) |
1100 |
#endif
|
1101 |
musb_rx_req(s, ep); |
1102 |
break;
|
1103 |
|
1104 |
case MUSB_HDRC_RXMAXP:
|
1105 |
s->ep[ep].maxp[1] = value;
|
1106 |
break;
|
1107 |
case MUSB_HDRC_RXCSR:
|
1108 |
/* (DMA mode only) */
|
1109 |
if (
|
1110 |
(value & MGC_M_RXCSR_H_AUTOREQ) && |
1111 |
!(value & MGC_M_RXCSR_RXPKTRDY) && |
1112 |
(s->ep[ep].csr[1] & MGC_M_RXCSR_RXPKTRDY))
|
1113 |
value |= MGC_M_RXCSR_H_REQPKT; |
1114 |
|
1115 |
s->ep[ep].csr[1] &= 0x102 | (value & 0x4d); |
1116 |
s->ep[ep].csr[1] |= value & 0xfeb0; |
1117 |
|
1118 |
musb_ep_frame_cancel(&s->ep[ep], 1);
|
1119 |
|
1120 |
if (value & MGC_M_RXCSR_FLUSHFIFO) {
|
1121 |
s->ep[ep].fifolen[1] = 0; |
1122 |
s->ep[ep].fifostart[1] = 0; |
1123 |
s->ep[ep].csr[1] &= ~(MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY);
|
1124 |
/* If double buffering and we have two packets ready, flush
|
1125 |
* only the first one and set up the fifo at the second packet. */
|
1126 |
} |
1127 |
#ifdef CLEAR_NAK
|
1128 |
if ((value & MGC_M_RXCSR_H_REQPKT) && !(value & MGC_M_RXCSR_DATAERROR))
|
1129 |
#else
|
1130 |
if (value & MGC_M_RXCSR_H_REQPKT)
|
1131 |
#endif
|
1132 |
musb_rx_req(s, ep); |
1133 |
break;
|
1134 |
case MUSB_HDRC_RXCOUNT:
|
1135 |
s->ep[ep].rxcount = value; |
1136 |
break;
|
1137 |
|
1138 |
default:
|
1139 |
musb_ep_writeb(s, ep, addr, value & 0xff);
|
1140 |
musb_ep_writeb(s, ep, addr | 1, value >> 8); |
1141 |
}; |
1142 |
} |
1143 |
|
1144 |
/* Generic control */
|
1145 |
static uint32_t musb_readb(void *opaque, a_target_phys_addr addr) |
1146 |
{ |
1147 |
MUSBState *s = (MUSBState *) opaque; |
1148 |
int ep, i;
|
1149 |
uint8_t ret; |
1150 |
|
1151 |
switch (addr) {
|
1152 |
case MUSB_HDRC_FADDR:
|
1153 |
return s->faddr;
|
1154 |
case MUSB_HDRC_POWER:
|
1155 |
return s->power;
|
1156 |
case MUSB_HDRC_INTRUSB:
|
1157 |
ret = s->intr; |
1158 |
for (i = 0; i < sizeof(ret) * 8; i ++) |
1159 |
if (ret & (1 << i)) |
1160 |
musb_intr_set(s, i, 0);
|
1161 |
return ret;
|
1162 |
case MUSB_HDRC_INTRUSBE:
|
1163 |
return s->mask;
|
1164 |
case MUSB_HDRC_INDEX:
|
1165 |
return s->idx;
|
1166 |
case MUSB_HDRC_TESTMODE:
|
1167 |
return 0x00; |
1168 |
|
1169 |
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf): |
1170 |
return musb_ep_readb(s, s->idx, addr & 0xf); |
1171 |
|
1172 |
case MUSB_HDRC_DEVCTL:
|
1173 |
return s->devctl;
|
1174 |
|
1175 |
case MUSB_HDRC_TXFIFOSZ:
|
1176 |
case MUSB_HDRC_RXFIFOSZ:
|
1177 |
case MUSB_HDRC_VCTRL:
|
1178 |
/* TODO */
|
1179 |
return 0x00; |
1180 |
|
1181 |
case MUSB_HDRC_HWVERS:
|
1182 |
return (1 << 10) | 400; |
1183 |
|
1184 |
case (MUSB_HDRC_VCTRL | 1): |
1185 |
case (MUSB_HDRC_HWVERS | 1): |
1186 |
case (MUSB_HDRC_DEVCTL | 1): |
1187 |
return 0x00; |
1188 |
|
1189 |
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f): |
1190 |
ep = (addr >> 3) & 0xf; |
1191 |
return musb_busctl_readb(s, ep, addr & 0x7); |
1192 |
|
1193 |
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff): |
1194 |
ep = (addr >> 4) & 0xf; |
1195 |
return musb_ep_readb(s, ep, addr & 0xf); |
1196 |
|
1197 |
default:
|
1198 |
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr); |
1199 |
return 0x00; |
1200 |
}; |
1201 |
} |
1202 |
|
1203 |
static void musb_writeb(void *opaque, a_target_phys_addr addr, uint32_t value) |
1204 |
{ |
1205 |
MUSBState *s = (MUSBState *) opaque; |
1206 |
int ep;
|
1207 |
|
1208 |
switch (addr) {
|
1209 |
case MUSB_HDRC_FADDR:
|
1210 |
s->faddr = value & 0x7f;
|
1211 |
break;
|
1212 |
case MUSB_HDRC_POWER:
|
1213 |
s->power = (value & 0xef) | (s->power & 0x10); |
1214 |
/* MGC_M_POWER_RESET is also read-only in Peripheral Mode */
|
1215 |
if ((value & MGC_M_POWER_RESET) && s->port.dev) {
|
1216 |
usb_send_msg(s->port.dev, USB_MSG_RESET); |
1217 |
/* Negotiate high-speed operation if MGC_M_POWER_HSENAB is set. */
|
1218 |
if ((value & MGC_M_POWER_HSENAB) &&
|
1219 |
s->port.dev->speed == USB_SPEED_HIGH) |
1220 |
s->power |= MGC_M_POWER_HSMODE; /* Success */
|
1221 |
/* Restart frame counting. */
|
1222 |
} |
1223 |
if (value & MGC_M_POWER_SUSPENDM) {
|
1224 |
/* When all transfers finish, suspend and if MGC_M_POWER_ENSUSPEND
|
1225 |
* is set, also go into low power mode. Frame counting stops. */
|
1226 |
/* XXX: Cleared when the interrupt register is read */
|
1227 |
} |
1228 |
if (value & MGC_M_POWER_RESUME) {
|
1229 |
/* Wait 20ms and signal resuming on the bus. Frame counting
|
1230 |
* restarts. */
|
1231 |
} |
1232 |
break;
|
1233 |
case MUSB_HDRC_INTRUSB:
|
1234 |
break;
|
1235 |
case MUSB_HDRC_INTRUSBE:
|
1236 |
s->mask = value & 0xff;
|
1237 |
break;
|
1238 |
case MUSB_HDRC_INDEX:
|
1239 |
s->idx = value & 0xf;
|
1240 |
break;
|
1241 |
case MUSB_HDRC_TESTMODE:
|
1242 |
break;
|
1243 |
|
1244 |
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf): |
1245 |
musb_ep_writeb(s, s->idx, addr & 0xf, value);
|
1246 |
break;
|
1247 |
|
1248 |
case MUSB_HDRC_DEVCTL:
|
1249 |
s->session = !!(value & MGC_M_DEVCTL_SESSION); |
1250 |
musb_session_update(s, |
1251 |
!!s->port.dev, |
1252 |
!!(s->devctl & MGC_M_DEVCTL_SESSION)); |
1253 |
|
1254 |
/* It seems this is the only R/W bit in this register? */
|
1255 |
s->devctl &= ~MGC_M_DEVCTL_SESSION; |
1256 |
s->devctl |= value & MGC_M_DEVCTL_SESSION; |
1257 |
break;
|
1258 |
|
1259 |
case MUSB_HDRC_TXFIFOSZ:
|
1260 |
case MUSB_HDRC_RXFIFOSZ:
|
1261 |
case MUSB_HDRC_VCTRL:
|
1262 |
/* TODO */
|
1263 |
break;
|
1264 |
|
1265 |
case (MUSB_HDRC_VCTRL | 1): |
1266 |
case (MUSB_HDRC_DEVCTL | 1): |
1267 |
break;
|
1268 |
|
1269 |
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f): |
1270 |
ep = (addr >> 3) & 0xf; |
1271 |
musb_busctl_writeb(s, ep, addr & 0x7, value);
|
1272 |
break;
|
1273 |
|
1274 |
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff): |
1275 |
ep = (addr >> 4) & 0xf; |
1276 |
musb_ep_writeb(s, ep, addr & 0xf, value);
|
1277 |
break;
|
1278 |
|
1279 |
default:
|
1280 |
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr); |
1281 |
}; |
1282 |
} |
1283 |
|
1284 |
static uint32_t musb_readh(void *opaque, a_target_phys_addr addr) |
1285 |
{ |
1286 |
MUSBState *s = (MUSBState *) opaque; |
1287 |
int ep, i;
|
1288 |
uint16_t ret; |
1289 |
|
1290 |
switch (addr) {
|
1291 |
case MUSB_HDRC_INTRTX:
|
1292 |
ret = s->tx_intr; |
1293 |
/* Auto clear */
|
1294 |
for (i = 0; i < sizeof(ret) * 8; i ++) |
1295 |
if (ret & (1 << i)) |
1296 |
musb_tx_intr_set(s, i, 0);
|
1297 |
return ret;
|
1298 |
case MUSB_HDRC_INTRRX:
|
1299 |
ret = s->rx_intr; |
1300 |
/* Auto clear */
|
1301 |
for (i = 0; i < sizeof(ret) * 8; i ++) |
1302 |
if (ret & (1 << i)) |
1303 |
musb_rx_intr_set(s, i, 0);
|
1304 |
return ret;
|
1305 |
case MUSB_HDRC_INTRTXE:
|
1306 |
return s->tx_mask;
|
1307 |
case MUSB_HDRC_INTRRXE:
|
1308 |
return s->rx_mask;
|
1309 |
|
1310 |
case MUSB_HDRC_FRAME:
|
1311 |
/* TODO */
|
1312 |
return 0x0000; |
1313 |
case MUSB_HDRC_TXFIFOADDR:
|
1314 |
return s->ep[s->idx].fifoaddr[0]; |
1315 |
case MUSB_HDRC_RXFIFOADDR:
|
1316 |
return s->ep[s->idx].fifoaddr[1]; |
1317 |
|
1318 |
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf): |
1319 |
return musb_ep_readh(s, s->idx, addr & 0xf); |
1320 |
|
1321 |
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f): |
1322 |
ep = (addr >> 3) & 0xf; |
1323 |
return musb_busctl_readh(s, ep, addr & 0x7); |
1324 |
|
1325 |
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff): |
1326 |
ep = (addr >> 4) & 0xf; |
1327 |
return musb_ep_readh(s, ep, addr & 0xf); |
1328 |
|
1329 |
default:
|
1330 |
return musb_readb(s, addr) | (musb_readb(s, addr | 1) << 8); |
1331 |
}; |
1332 |
} |
1333 |
|
1334 |
static void musb_writeh(void *opaque, a_target_phys_addr addr, uint32_t value) |
1335 |
{ |
1336 |
MUSBState *s = (MUSBState *) opaque; |
1337 |
int ep;
|
1338 |
|
1339 |
switch (addr) {
|
1340 |
case MUSB_HDRC_INTRTXE:
|
1341 |
s->tx_mask = value; |
1342 |
/* XXX: the masks seem to apply on the raising edge like with
|
1343 |
* edge-triggered interrupts, thus no need to update. I may be
|
1344 |
* wrong though. */
|
1345 |
break;
|
1346 |
case MUSB_HDRC_INTRRXE:
|
1347 |
s->rx_mask = value; |
1348 |
break;
|
1349 |
|
1350 |
case MUSB_HDRC_FRAME:
|
1351 |
/* TODO */
|
1352 |
break;
|
1353 |
case MUSB_HDRC_TXFIFOADDR:
|
1354 |
s->ep[s->idx].fifoaddr[0] = value;
|
1355 |
s->ep[s->idx].buf[0] =
|
1356 |
s->buf + ((value << 1) & (sizeof(s->buf) / 4 - 1)); |
1357 |
break;
|
1358 |
case MUSB_HDRC_RXFIFOADDR:
|
1359 |
s->ep[s->idx].fifoaddr[1] = value;
|
1360 |
s->ep[s->idx].buf[1] =
|
1361 |
s->buf + ((value << 1) & (sizeof(s->buf) / 4 - 1)); |
1362 |
break;
|
1363 |
|
1364 |
case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf): |
1365 |
musb_ep_writeh(s, s->idx, addr & 0xf, value);
|
1366 |
break;
|
1367 |
|
1368 |
case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f): |
1369 |
ep = (addr >> 3) & 0xf; |
1370 |
musb_busctl_writeh(s, ep, addr & 0x7, value);
|
1371 |
break;
|
1372 |
|
1373 |
case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff): |
1374 |
ep = (addr >> 4) & 0xf; |
1375 |
musb_ep_writeh(s, ep, addr & 0xf, value);
|
1376 |
break;
|
1377 |
|
1378 |
default:
|
1379 |
musb_writeb(s, addr, value & 0xff);
|
1380 |
musb_writeb(s, addr | 1, value >> 8); |
1381 |
}; |
1382 |
} |
1383 |
|
1384 |
static uint32_t musb_readw(void *opaque, a_target_phys_addr addr) |
1385 |
{ |
1386 |
MUSBState *s = (MUSBState *) opaque; |
1387 |
MUSBEndPoint *ep; |
1388 |
int epnum;
|
1389 |
|
1390 |
switch (addr) {
|
1391 |
case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f): |
1392 |
epnum = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf; |
1393 |
ep = s->ep + epnum; |
1394 |
|
1395 |
if (ep->fifolen[1] >= 16) { |
1396 |
/* We have a FIFO underrun */
|
1397 |
printf("%s: EP%i FIFO is now empty, stop reading\n",
|
1398 |
__FUNCTION__, epnum); |
1399 |
return 0x00000000; |
1400 |
} |
1401 |
/* In DMA mode clear RXPKTRDY and set REQPKT automatically
|
1402 |
* (if AUTOREQ is set) */
|
1403 |
|
1404 |
ep->csr[1] &= ~MGC_M_RXCSR_FIFOFULL;
|
1405 |
return ep->buf[1][ep->fifostart[1] + ep->fifolen[1] ++]; |
1406 |
|
1407 |
default:
|
1408 |
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr); |
1409 |
return 0x00000000; |
1410 |
}; |
1411 |
} |
1412 |
|
1413 |
static void musb_writew(void *opaque, a_target_phys_addr addr, uint32_t value) |
1414 |
{ |
1415 |
MUSBState *s = (MUSBState *) opaque; |
1416 |
MUSBEndPoint *ep; |
1417 |
int epnum;
|
1418 |
|
1419 |
switch (addr) {
|
1420 |
case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f): |
1421 |
epnum = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf; |
1422 |
ep = s->ep + epnum; |
1423 |
|
1424 |
if (ep->fifolen[0] >= 16) { |
1425 |
/* We have a FIFO overrun */
|
1426 |
printf("%s: EP%i FIFO exceeded 64 bytes, stop feeding data\n",
|
1427 |
__FUNCTION__, epnum); |
1428 |
break;
|
1429 |
} |
1430 |
|
1431 |
ep->buf[0][ep->fifostart[0] + ep->fifolen[0] ++] = value; |
1432 |
if (epnum)
|
1433 |
ep->csr[0] |= MGC_M_TXCSR_FIFONOTEMPTY;
|
1434 |
break;
|
1435 |
|
1436 |
default:
|
1437 |
printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr); |
1438 |
}; |
1439 |
} |
1440 |
|
1441 |
CPUReadMemoryFunc * const musb_read[] = {
|
1442 |
musb_readb, |
1443 |
musb_readh, |
1444 |
musb_readw, |
1445 |
}; |
1446 |
|
1447 |
CPUWriteMemoryFunc * const musb_write[] = {
|
1448 |
musb_writeb, |
1449 |
musb_writeh, |
1450 |
musb_writew, |
1451 |
}; |