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-rw-r--r--hw/usb-musb.c1449
1 files changed, 1449 insertions, 0 deletions
diff --git a/hw/usb-musb.c b/hw/usb-musb.c
new file mode 100644
index 0000000000..1499b310b7
--- /dev/null
+++ b/hw/usb-musb.c
@@ -0,0 +1,1449 @@
+/*
+ * "Inventra" High-speed Dual-Role Controller (MUSB-HDRC), Mentor Graphics,
+ * USB2.0 OTG compliant core used in various chips.
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ * Written by Andrzej Zaborowski <andrew@openedhand.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 or
+ * (at your option) version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Only host-mode and non-DMA accesses are currently supported.
+ */
+#include "qemu-common.h"
+#include "qemu-timer.h"
+#include "usb.h"
+#include "irq.h"
+
+/* Common USB registers */
+#define MUSB_HDRC_FADDR 0x00 /* 8-bit */
+#define MUSB_HDRC_POWER 0x01 /* 8-bit */
+
+#define MUSB_HDRC_INTRTX 0x02 /* 16-bit */
+#define MUSB_HDRC_INTRRX 0x04
+#define MUSB_HDRC_INTRTXE 0x06
+#define MUSB_HDRC_INTRRXE 0x08
+#define MUSB_HDRC_INTRUSB 0x0a /* 8 bit */
+#define MUSB_HDRC_INTRUSBE 0x0b /* 8 bit */
+#define MUSB_HDRC_FRAME 0x0c /* 16-bit */
+#define MUSB_HDRC_INDEX 0x0e /* 8 bit */
+#define MUSB_HDRC_TESTMODE 0x0f /* 8 bit */
+
+/* Per-EP registers in indexed mode */
+#define MUSB_HDRC_EP_IDX 0x10 /* 8-bit */
+
+/* EP FIFOs */
+#define MUSB_HDRC_FIFO 0x20
+
+/* Additional Control Registers */
+#define MUSB_HDRC_DEVCTL 0x60 /* 8 bit */
+
+/* These are indexed */
+#define MUSB_HDRC_TXFIFOSZ 0x62 /* 8 bit (see masks) */
+#define MUSB_HDRC_RXFIFOSZ 0x63 /* 8 bit (see masks) */
+#define MUSB_HDRC_TXFIFOADDR 0x64 /* 16 bit offset shifted right 3 */
+#define MUSB_HDRC_RXFIFOADDR 0x66 /* 16 bit offset shifted right 3 */
+
+/* Some more registers */
+#define MUSB_HDRC_VCTRL 0x68 /* 8 bit */
+#define MUSB_HDRC_HWVERS 0x6c /* 8 bit */
+
+/* Added in HDRC 1.9(?) & MHDRC 1.4 */
+/* ULPI pass-through */
+#define MUSB_HDRC_ULPI_VBUSCTL 0x70
+#define MUSB_HDRC_ULPI_REGDATA 0x74
+#define MUSB_HDRC_ULPI_REGADDR 0x75
+#define MUSB_HDRC_ULPI_REGCTL 0x76
+
+/* Extended config & PHY control */
+#define MUSB_HDRC_ENDCOUNT 0x78 /* 8 bit */
+#define MUSB_HDRC_DMARAMCFG 0x79 /* 8 bit */
+#define MUSB_HDRC_PHYWAIT 0x7a /* 8 bit */
+#define MUSB_HDRC_PHYVPLEN 0x7b /* 8 bit */
+#define MUSB_HDRC_HS_EOF1 0x7c /* 8 bit, units of 546.1 us */
+#define MUSB_HDRC_FS_EOF1 0x7d /* 8 bit, units of 533.3 ns */
+#define MUSB_HDRC_LS_EOF1 0x7e /* 8 bit, units of 1.067 us */
+
+/* Per-EP BUSCTL registers */
+#define MUSB_HDRC_BUSCTL 0x80
+
+/* Per-EP registers in flat mode */
+#define MUSB_HDRC_EP 0x100
+
+/* offsets to registers in flat model */
+#define MUSB_HDRC_TXMAXP 0x00 /* 16 bit apparently */
+#define MUSB_HDRC_TXCSR 0x02 /* 16 bit apparently */
+#define MUSB_HDRC_CSR0 MUSB_HDRC_TXCSR /* re-used for EP0 */
+#define MUSB_HDRC_RXMAXP 0x04 /* 16 bit apparently */
+#define MUSB_HDRC_RXCSR 0x06 /* 16 bit apparently */
+#define MUSB_HDRC_RXCOUNT 0x08 /* 16 bit apparently */
+#define MUSB_HDRC_COUNT0 MUSB_HDRC_RXCOUNT /* re-used for EP0 */
+#define MUSB_HDRC_TXTYPE 0x0a /* 8 bit apparently */
+#define MUSB_HDRC_TYPE0 MUSB_HDRC_TXTYPE /* re-used for EP0 */
+#define MUSB_HDRC_TXINTERVAL 0x0b /* 8 bit apparently */
+#define MUSB_HDRC_NAKLIMIT0 MUSB_HDRC_TXINTERVAL /* re-used for EP0 */
+#define MUSB_HDRC_RXTYPE 0x0c /* 8 bit apparently */
+#define MUSB_HDRC_RXINTERVAL 0x0d /* 8 bit apparently */
+#define MUSB_HDRC_FIFOSIZE 0x0f /* 8 bit apparently */
+#define MUSB_HDRC_CONFIGDATA MGC_O_HDRC_FIFOSIZE /* re-used for EP0 */
+
+/* "Bus control" registers */
+#define MUSB_HDRC_TXFUNCADDR 0x00
+#define MUSB_HDRC_TXHUBADDR 0x02
+#define MUSB_HDRC_TXHUBPORT 0x03
+
+#define MUSB_HDRC_RXFUNCADDR 0x04
+#define MUSB_HDRC_RXHUBADDR 0x06
+#define MUSB_HDRC_RXHUBPORT 0x07
+
+/*
+ * MUSBHDRC Register bit masks
+ */
+
+/* POWER */
+#define MGC_M_POWER_ISOUPDATE 0x80
+#define MGC_M_POWER_SOFTCONN 0x40
+#define MGC_M_POWER_HSENAB 0x20
+#define MGC_M_POWER_HSMODE 0x10
+#define MGC_M_POWER_RESET 0x08
+#define MGC_M_POWER_RESUME 0x04
+#define MGC_M_POWER_SUSPENDM 0x02
+#define MGC_M_POWER_ENSUSPEND 0x01
+
+/* INTRUSB */
+#define MGC_M_INTR_SUSPEND 0x01
+#define MGC_M_INTR_RESUME 0x02
+#define MGC_M_INTR_RESET 0x04
+#define MGC_M_INTR_BABBLE 0x04
+#define MGC_M_INTR_SOF 0x08
+#define MGC_M_INTR_CONNECT 0x10
+#define MGC_M_INTR_DISCONNECT 0x20
+#define MGC_M_INTR_SESSREQ 0x40
+#define MGC_M_INTR_VBUSERROR 0x80 /* FOR SESSION END */
+#define MGC_M_INTR_EP0 0x01 /* FOR EP0 INTERRUPT */
+
+/* DEVCTL */
+#define MGC_M_DEVCTL_BDEVICE 0x80
+#define MGC_M_DEVCTL_FSDEV 0x40
+#define MGC_M_DEVCTL_LSDEV 0x20
+#define MGC_M_DEVCTL_VBUS 0x18
+#define MGC_S_DEVCTL_VBUS 3
+#define MGC_M_DEVCTL_HM 0x04
+#define MGC_M_DEVCTL_HR 0x02
+#define MGC_M_DEVCTL_SESSION 0x01
+
+/* TESTMODE */
+#define MGC_M_TEST_FORCE_HOST 0x80
+#define MGC_M_TEST_FIFO_ACCESS 0x40
+#define MGC_M_TEST_FORCE_FS 0x20
+#define MGC_M_TEST_FORCE_HS 0x10
+#define MGC_M_TEST_PACKET 0x08
+#define MGC_M_TEST_K 0x04
+#define MGC_M_TEST_J 0x02
+#define MGC_M_TEST_SE0_NAK 0x01
+
+/* CSR0 */
+#define MGC_M_CSR0_FLUSHFIFO 0x0100
+#define MGC_M_CSR0_TXPKTRDY 0x0002
+#define MGC_M_CSR0_RXPKTRDY 0x0001
+
+/* CSR0 in Peripheral mode */
+#define MGC_M_CSR0_P_SVDSETUPEND 0x0080
+#define MGC_M_CSR0_P_SVDRXPKTRDY 0x0040
+#define MGC_M_CSR0_P_SENDSTALL 0x0020
+#define MGC_M_CSR0_P_SETUPEND 0x0010
+#define MGC_M_CSR0_P_DATAEND 0x0008
+#define MGC_M_CSR0_P_SENTSTALL 0x0004
+
+/* CSR0 in Host mode */
+#define MGC_M_CSR0_H_NO_PING 0x0800
+#define MGC_M_CSR0_H_WR_DATATOGGLE 0x0400 /* set to allow setting: */
+#define MGC_M_CSR0_H_DATATOGGLE 0x0200 /* data toggle control */
+#define MGC_M_CSR0_H_NAKTIMEOUT 0x0080
+#define MGC_M_CSR0_H_STATUSPKT 0x0040
+#define MGC_M_CSR0_H_REQPKT 0x0020
+#define MGC_M_CSR0_H_ERROR 0x0010
+#define MGC_M_CSR0_H_SETUPPKT 0x0008
+#define MGC_M_CSR0_H_RXSTALL 0x0004
+
+/* CONFIGDATA */
+#define MGC_M_CONFIGDATA_MPRXE 0x80 /* auto bulk pkt combining */
+#define MGC_M_CONFIGDATA_MPTXE 0x40 /* auto bulk pkt splitting */
+#define MGC_M_CONFIGDATA_BIGENDIAN 0x20
+#define MGC_M_CONFIGDATA_HBRXE 0x10 /* HB-ISO for RX */
+#define MGC_M_CONFIGDATA_HBTXE 0x08 /* HB-ISO for TX */
+#define MGC_M_CONFIGDATA_DYNFIFO 0x04 /* dynamic FIFO sizing */
+#define MGC_M_CONFIGDATA_SOFTCONE 0x02 /* SoftConnect */
+#define MGC_M_CONFIGDATA_UTMIDW 0x01 /* Width, 0 => 8b, 1 => 16b */
+
+/* TXCSR in Peripheral and Host mode */
+#define MGC_M_TXCSR_AUTOSET 0x8000
+#define MGC_M_TXCSR_ISO 0x4000
+#define MGC_M_TXCSR_MODE 0x2000
+#define MGC_M_TXCSR_DMAENAB 0x1000
+#define MGC_M_TXCSR_FRCDATATOG 0x0800
+#define MGC_M_TXCSR_DMAMODE 0x0400
+#define MGC_M_TXCSR_CLRDATATOG 0x0040
+#define MGC_M_TXCSR_FLUSHFIFO 0x0008
+#define MGC_M_TXCSR_FIFONOTEMPTY 0x0002
+#define MGC_M_TXCSR_TXPKTRDY 0x0001
+
+/* TXCSR in Peripheral mode */
+#define MGC_M_TXCSR_P_INCOMPTX 0x0080
+#define MGC_M_TXCSR_P_SENTSTALL 0x0020
+#define MGC_M_TXCSR_P_SENDSTALL 0x0010
+#define MGC_M_TXCSR_P_UNDERRUN 0x0004
+
+/* TXCSR in Host mode */
+#define MGC_M_TXCSR_H_WR_DATATOGGLE 0x0200
+#define MGC_M_TXCSR_H_DATATOGGLE 0x0100
+#define MGC_M_TXCSR_H_NAKTIMEOUT 0x0080
+#define MGC_M_TXCSR_H_RXSTALL 0x0020
+#define MGC_M_TXCSR_H_ERROR 0x0004
+
+/* RXCSR in Peripheral and Host mode */
+#define MGC_M_RXCSR_AUTOCLEAR 0x8000
+#define MGC_M_RXCSR_DMAENAB 0x2000
+#define MGC_M_RXCSR_DISNYET 0x1000
+#define MGC_M_RXCSR_DMAMODE 0x0800
+#define MGC_M_RXCSR_INCOMPRX 0x0100
+#define MGC_M_RXCSR_CLRDATATOG 0x0080
+#define MGC_M_RXCSR_FLUSHFIFO 0x0010
+#define MGC_M_RXCSR_DATAERROR 0x0008
+#define MGC_M_RXCSR_FIFOFULL 0x0002
+#define MGC_M_RXCSR_RXPKTRDY 0x0001
+
+/* RXCSR in Peripheral mode */
+#define MGC_M_RXCSR_P_ISO 0x4000
+#define MGC_M_RXCSR_P_SENTSTALL 0x0040
+#define MGC_M_RXCSR_P_SENDSTALL 0x0020
+#define MGC_M_RXCSR_P_OVERRUN 0x0004
+
+/* RXCSR in Host mode */
+#define MGC_M_RXCSR_H_AUTOREQ 0x4000
+#define MGC_M_RXCSR_H_WR_DATATOGGLE 0x0400
+#define MGC_M_RXCSR_H_DATATOGGLE 0x0200
+#define MGC_M_RXCSR_H_RXSTALL 0x0040
+#define MGC_M_RXCSR_H_REQPKT 0x0020
+#define MGC_M_RXCSR_H_ERROR 0x0004
+
+/* HUBADDR */
+#define MGC_M_HUBADDR_MULTI_TT 0x80
+
+/* ULPI: Added in HDRC 1.9(?) & MHDRC 1.4 */
+#define MGC_M_ULPI_VBCTL_USEEXTVBUSIND 0x02
+#define MGC_M_ULPI_VBCTL_USEEXTVBUS 0x01
+#define MGC_M_ULPI_REGCTL_INT_ENABLE 0x08
+#define MGC_M_ULPI_REGCTL_READNOTWRITE 0x04
+#define MGC_M_ULPI_REGCTL_COMPLETE 0x02
+#define MGC_M_ULPI_REGCTL_REG 0x01
+
+static void musb_attach(USBPort *port, USBDevice *dev);
+
+struct musb_s {
+ qemu_irq *irqs;
+ USBPort port;
+
+ int idx;
+ uint8_t devctl;
+ uint8_t power;
+ uint8_t faddr;
+
+ uint8_t intr;
+ uint8_t mask;
+ uint16_t tx_intr;
+ uint16_t tx_mask;
+ uint16_t rx_intr;
+ uint16_t rx_mask;
+
+ int setup_len;
+ int session;
+
+ uint32_t buf[0x2000];
+
+ struct musb_ep_s {
+ uint16_t faddr[2];
+ uint8_t haddr[2];
+ uint8_t hport[2];
+ uint16_t csr[2];
+ uint16_t maxp[2];
+ uint16_t rxcount;
+ uint8_t type[2];
+ uint8_t interval[2];
+ uint8_t config;
+ uint8_t fifosize;
+ int timeout[2]; /* Always in microframes */
+
+ uint32_t *buf[2];
+ int fifolen[2];
+ int fifostart[2];
+ int fifoaddr[2];
+ USBPacket packey[2];
+ int status[2];
+ int ext_size[2];
+
+ /* For callbacks' use */
+ int epnum;
+ int interrupt[2];
+ struct musb_s *musb;
+ USBCallback *delayed_cb[2];
+ QEMUTimer *intv_timer[2];
+ /* Duplicating the world since 2008!... probably we should have 32
+ * logical, single endpoints instead. */
+ } ep[16];
+} *musb_init(qemu_irq *irqs)
+{
+ struct musb_s *s = qemu_mallocz(sizeof(*s));
+ int i;
+
+ s->irqs = irqs;
+
+ s->faddr = 0x00;
+ s->power = MGC_M_POWER_HSENAB;
+ s->tx_intr = 0x0000;
+ s->rx_intr = 0x0000;
+ s->tx_mask = 0xffff;
+ s->rx_mask = 0xffff;
+ s->intr = 0x00;
+ s->mask = 0x06;
+ s->idx = 0;
+
+ /* TODO: _DW */
+ s->ep[0].config = MGC_M_CONFIGDATA_SOFTCONE | MGC_M_CONFIGDATA_DYNFIFO;
+ for (i = 0; i < 16; i ++) {
+ s->ep[i].fifosize = 64;
+ s->ep[i].maxp[0] = 0x40;
+ s->ep[i].maxp[1] = 0x40;
+ s->ep[i].musb = s;
+ s->ep[i].epnum = i;
+ }
+
+ qemu_register_usb_port(&s->port, s, 0, musb_attach);
+
+ return s;
+}
+
+static void musb_vbus_set(struct musb_s *s, int level)
+{
+ if (level)
+ s->devctl |= 3 << MGC_S_DEVCTL_VBUS;
+ else
+ s->devctl &= ~MGC_M_DEVCTL_VBUS;
+
+ qemu_set_irq(s->irqs[musb_set_vbus], level);
+}
+
+static void musb_intr_set(struct musb_s *s, int line, int level)
+{
+ if (!level) {
+ s->intr &= ~(1 << line);
+ qemu_irq_lower(s->irqs[line]);
+ } else if (s->mask & (1 << line)) {
+ s->intr |= 1 << line;
+ qemu_irq_raise(s->irqs[line]);
+ }
+}
+
+static void musb_tx_intr_set(struct musb_s *s, int line, int level)
+{
+ if (!level) {
+ s->tx_intr &= ~(1 << line);
+ if (!s->tx_intr)
+ qemu_irq_lower(s->irqs[musb_irq_tx]);
+ } else if (s->tx_mask & (1 << line)) {
+ s->tx_intr |= 1 << line;
+ qemu_irq_raise(s->irqs[musb_irq_tx]);
+ }
+}
+
+static void musb_rx_intr_set(struct musb_s *s, int line, int level)
+{
+ if (line) {
+ if (!level) {
+ s->rx_intr &= ~(1 << line);
+ if (!s->rx_intr)
+ qemu_irq_lower(s->irqs[musb_irq_rx]);
+ } else if (s->rx_mask & (1 << line)) {
+ s->rx_intr |= 1 << line;
+ qemu_irq_raise(s->irqs[musb_irq_rx]);
+ }
+ } else
+ musb_tx_intr_set(s, line, level);
+}
+
+uint32_t musb_core_intr_get(struct musb_s *s)
+{
+ return (s->rx_intr << 15) | s->tx_intr;
+}
+
+void musb_core_intr_clear(struct musb_s *s, uint32_t mask)
+{
+ if (s->rx_intr) {
+ s->rx_intr &= mask >> 15;
+ if (!s->rx_intr)
+ qemu_irq_lower(s->irqs[musb_irq_rx]);
+ }
+
+ if (s->tx_intr) {
+ s->tx_intr &= mask & 0xffff;
+ if (!s->tx_intr)
+ qemu_irq_lower(s->irqs[musb_irq_tx]);
+ }
+}
+
+void musb_set_size(struct musb_s *s, int epnum, int size, int is_tx)
+{
+ s->ep[epnum].ext_size[!is_tx] = size;
+ s->ep[epnum].fifostart[0] = 0;
+ s->ep[epnum].fifostart[1] = 0;
+ s->ep[epnum].fifolen[0] = 0;
+ s->ep[epnum].fifolen[1] = 0;
+}
+
+static void musb_session_update(struct musb_s *s, int prev_dev, int prev_sess)
+{
+ int detect_prev = prev_dev && prev_sess;
+ int detect = !!s->port.dev && s->session;
+
+ if (detect && !detect_prev) {
+ /* Let's skip the ID pin sense and VBUS sense formalities and
+ * and signal a successful SRP directly. This should work at least
+ * for the Linux driver stack. */
+ musb_intr_set(s, musb_irq_connect, 1);
+
+ if (s->port.dev->speed == USB_SPEED_LOW) {
+ s->devctl &= ~MGC_M_DEVCTL_FSDEV;
+ s->devctl |= MGC_M_DEVCTL_LSDEV;
+ } else {
+ s->devctl |= MGC_M_DEVCTL_FSDEV;
+ s->devctl &= ~MGC_M_DEVCTL_LSDEV;
+ }
+
+ /* A-mode? */
+ s->devctl &= ~MGC_M_DEVCTL_BDEVICE;
+
+ /* Host-mode bit? */
+ s->devctl |= MGC_M_DEVCTL_HM;
+#if 1
+ musb_vbus_set(s, 1);
+#endif
+ } else if (!detect && detect_prev) {
+#if 1
+ musb_vbus_set(s, 0);
+#endif
+ }
+}
+
+/* Attach or detach a device on our only port. */
+static void musb_attach(USBPort *port, USBDevice *dev)
+{
+ struct musb_s *s = (struct musb_s *) port->opaque;
+ USBDevice *curr;
+
+ port = &s->port;
+ curr = port->dev;
+
+ if (dev) {
+ if (curr) {
+ usb_attach(port, NULL);
+ /* TODO: signal some interrupts */
+ }
+
+ musb_intr_set(s, musb_irq_vbus_request, 1);
+
+ /* Send the attach message to device */
+ usb_send_msg(dev, USB_MSG_ATTACH);
+ } else if (curr) {
+ /* Send the detach message */
+ usb_send_msg(curr, USB_MSG_DETACH);
+
+ musb_intr_set(s, musb_irq_disconnect, 1);
+ }
+
+ port->dev = dev;
+
+ musb_session_update(s, !!curr, s->session);
+}
+
+static inline void musb_cb_tick0(void *opaque)
+{
+ struct musb_ep_s *ep = (struct musb_ep_s *) opaque;
+
+ ep->delayed_cb[0](&ep->packey[0], opaque);
+}
+
+static inline void musb_cb_tick1(void *opaque)
+{
+ struct musb_ep_s *ep = (struct musb_ep_s *) opaque;
+
+ ep->delayed_cb[1](&ep->packey[1], opaque);
+}
+
+#define musb_cb_tick (dir ? musb_cb_tick1 : musb_cb_tick0)
+
+static inline void musb_schedule_cb(USBPacket *packey, void *opaque, int dir)
+{
+ struct musb_ep_s *ep = (struct musb_ep_s *) opaque;
+ int timeout = 0;
+
+ if (ep->status[dir] == USB_RET_NAK)
+ timeout = ep->timeout[dir];
+ else if (ep->interrupt[dir])
+ timeout = 8;
+ else
+ return musb_cb_tick(opaque);
+
+ if (!ep->intv_timer[dir])
+ ep->intv_timer[dir] = qemu_new_timer(vm_clock, musb_cb_tick, opaque);
+
+ qemu_mod_timer(ep->intv_timer[dir], qemu_get_clock(vm_clock) +
+ muldiv64(timeout, ticks_per_sec, 8000));
+}
+
+static void musb_schedule0_cb(USBPacket *packey, void *opaque)
+{
+ return musb_schedule_cb(packey, opaque, 0);
+}
+
+static void musb_schedule1_cb(USBPacket *packey, void *opaque)
+{
+ return musb_schedule_cb(packey, opaque, 1);
+}
+
+static int musb_timeout(int ttype, int speed, int val)
+{
+#if 1
+ return val << 3;
+#endif
+
+ switch (ttype) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ if (val < 2)
+ return 0;
+ else if (speed == USB_SPEED_HIGH)
+ return 1 << (val - 1);
+ else
+ return 8 << (val - 1);
+
+ case USB_ENDPOINT_XFER_INT:
+ if (speed == USB_SPEED_HIGH)
+ if (val < 2)
+ return 0;
+ else
+ return 1 << (val - 1);
+ else
+ return val << 3;
+
+ case USB_ENDPOINT_XFER_BULK:
+ case USB_ENDPOINT_XFER_ISOC:
+ if (val < 2)
+ return 0;
+ else if (speed == USB_SPEED_HIGH)
+ return 1 << (val - 1);
+ else
+ return 8 << (val - 1);
+ /* TODO: what with low-speed Bulk and Isochronous? */
+ }
+
+ cpu_abort(cpu_single_env, "bad interval\n");
+}
+
+static inline void musb_packet(struct musb_s *s, struct musb_ep_s *ep,
+ int epnum, int pid, int len, USBCallback cb, int dir)
+{
+ int ret;
+ int idx = epnum && dir;
+ int ttype;
+
+ /* ep->type[0,1] contains:
+ * in bits 7:6 the speed (0 - invalid, 1 - high, 2 - full, 3 - slow)
+ * in bits 5:4 the transfer type (BULK / INT)
+ * in bits 3:0 the EP num
+ */
+ ttype = epnum ? (ep->type[idx] >> 4) & 3 : 0;
+
+ ep->timeout[dir] = musb_timeout(ttype,
+ ep->type[idx] >> 6, ep->interval[idx]);
+ ep->interrupt[dir] = ttype == USB_ENDPOINT_XFER_INT;
+ ep->delayed_cb[dir] = cb;
+ cb = dir ? musb_schedule1_cb : musb_schedule0_cb;
+
+ ep->packey[dir].pid = pid;
+ /* A wild guess on the FADDR semantics... */
+ ep->packey[dir].devaddr = ep->faddr[idx];
+ ep->packey[dir].devep = ep->type[idx] & 0xf;
+ ep->packey[dir].data = (void *) ep->buf[idx];
+ ep->packey[dir].len = len;
+ ep->packey[dir].complete_cb = cb;
+ ep->packey[dir].complete_opaque = ep;
+
+ if (s->port.dev)
+ ret = s->port.dev->handle_packet(s->port.dev, &ep->packey[dir]);
+ else
+ ret = USB_RET_NODEV;
+
+ if (ret == USB_RET_ASYNC) {
+ ep->status[dir] = len;
+ return;
+ }
+
+ ep->status[dir] = ret;
+ usb_packet_complete(&ep->packey[dir]);
+}
+
+static void musb_tx_packet_complete(USBPacket *packey, void *opaque)
+{
+ /* Unfortunately we can't use packey->devep because that's the remote
+ * endpoint number and may be different than our local. */
+ struct musb_ep_s *ep = (struct musb_ep_s *) opaque;
+ int epnum = ep->epnum;
+ struct musb_s *s = ep->musb;
+
+ ep->fifostart[0] = 0;
+ ep->fifolen[0] = 0;
+#ifdef CLEAR_NAK
+ if (ep->status[0] != USB_RET_NAK) {
+#endif
+ if (epnum)
+ ep->csr[0] &= ~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY);
+ else
+ ep->csr[0] &= ~MGC_M_CSR0_TXPKTRDY;
+#ifdef CLEAR_NAK
+ }
+#endif
+
+ /* Clear all of the error bits first */
+ if (epnum)
+ ep->csr[0] &= ~(MGC_M_TXCSR_H_ERROR | MGC_M_TXCSR_H_RXSTALL |
+ MGC_M_TXCSR_H_NAKTIMEOUT);
+ else
+ ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
+ MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
+
+ if (ep->status[0] == USB_RET_STALL) {
+ /* Command not supported by target! */
+ ep->status[0] = 0;
+
+ if (epnum)
+ ep->csr[0] |= MGC_M_TXCSR_H_RXSTALL;
+ else
+ ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
+ }
+
+ if (ep->status[0] == USB_RET_NAK) {
+ ep->status[0] = 0;
+
+ /* NAK timeouts are only generated in Bulk transfers and
+ * Data-errors in Isochronous. */
+ if (ep->interrupt[0]) {
+ return;
+ }
+
+ if (epnum)
+ ep->csr[0] |= MGC_M_TXCSR_H_NAKTIMEOUT;
+ else
+ ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
+ }
+
+ if (ep->status[0] < 0) {
+ if (ep->status[0] == USB_RET_BABBLE)
+ musb_intr_set(s, musb_irq_rst_babble, 1);
+
+ /* Pretend we've tried three times already and failed (in
+ * case of USB_TOKEN_SETUP). */
+ if (epnum)
+ ep->csr[0] |= MGC_M_TXCSR_H_ERROR;
+ else
+ ep->csr[0] |= MGC_M_CSR0_H_ERROR;
+
+ musb_tx_intr_set(s, epnum, 1);
+ return;
+ }
+ /* TODO: check len for over/underruns of an OUT packet? */
+
+#ifdef SETUPLEN_HACK
+ if (!epnum && ep->packey[0].pid == USB_TOKEN_SETUP)
+ s->setup_len = ep->packey[0].data[6];
+#endif
+
+ /* In DMA mode: if no error, assert DMA request for this EP,
+ * and skip the interrupt. */
+ musb_tx_intr_set(s, epnum, 1);
+}
+
+static void musb_rx_packet_complete(USBPacket *packey, void *opaque)
+{
+ /* Unfortunately we can't use packey->devep because that's the remote
+ * endpoint number and may be different than our local. */
+ struct musb_ep_s *ep = (struct musb_ep_s *) opaque;
+ int epnum = ep->epnum;
+ struct musb_s *s = ep->musb;
+
+ ep->fifostart[1] = 0;
+ ep->fifolen[1] = 0;
+
+#ifdef CLEAR_NAK
+ if (ep->status[1] != USB_RET_NAK) {
+#endif
+ ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
+ if (!epnum)
+ ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
+#ifdef CLEAR_NAK
+ }
+#endif
+
+ /* Clear all of the imaginable error bits first */
+ ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
+ MGC_M_RXCSR_DATAERROR);
+ if (!epnum)
+ ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
+ MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
+
+ if (ep->status[1] == USB_RET_STALL) {
+ ep->status[1] = 0;
+ packey->len = 0;
+
+ ep->csr[1] |= MGC_M_RXCSR_H_RXSTALL;
+ if (!epnum)
+ ep->csr[0] |= MGC_M_CSR0_H_RXSTALL;
+ }
+
+ if (ep->status[1] == USB_RET_NAK) {
+ ep->status[1] = 0;
+
+ /* NAK timeouts are only generated in Bulk transfers and
+ * Data-errors in Isochronous. */
+ if (ep->interrupt[1])
+ return musb_packet(s, ep, epnum, USB_TOKEN_IN,
+ packey->len, musb_rx_packet_complete, 1);
+
+ ep->csr[1] |= MGC_M_RXCSR_DATAERROR;
+ if (!epnum)
+ ep->csr[0] |= MGC_M_CSR0_H_NAKTIMEOUT;
+ }
+
+ if (ep->status[1] < 0) {
+ if (ep->status[1] == USB_RET_BABBLE) {
+ musb_intr_set(s, musb_irq_rst_babble, 1);
+ return;
+ }
+
+ /* Pretend we've tried three times already and failed (in
+ * case of a control transfer). */
+ ep->csr[1] |= MGC_M_RXCSR_H_ERROR;
+ if (!epnum)
+ ep->csr[0] |= MGC_M_CSR0_H_ERROR;
+
+ musb_rx_intr_set(s, epnum, 1);
+ return;
+ }
+ /* TODO: check len for over/underruns of an OUT packet? */
+ /* TODO: perhaps make use of e->ext_size[1] here. */
+
+ packey->len = ep->status[1];
+
+ if (!(ep->csr[1] & (MGC_M_RXCSR_H_RXSTALL | MGC_M_RXCSR_DATAERROR))) {
+ ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
+ if (!epnum)
+ ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
+
+ ep->rxcount = packey->len; /* XXX: MIN(packey->len, ep->maxp[1]); */
+ /* In DMA mode: assert DMA request for this EP */
+ }
+
+ /* Only if DMA has not been asserted */
+ musb_rx_intr_set(s, epnum, 1);
+}
+
+static void musb_tx_rdy(struct musb_s *s, int epnum)
+{
+ struct musb_ep_s *ep = s->ep + epnum;
+ int pid;
+ int total, valid = 0;
+
+ ep->fifostart[0] += ep->fifolen[0];
+ ep->fifolen[0] = 0;
+
+ /* XXX: how's the total size of the packet retrieved exactly in
+ * the generic case? */
+ total = ep->maxp[0] & 0x3ff;
+
+ if (ep->ext_size[0]) {
+ total = ep->ext_size[0];
+ ep->ext_size[0] = 0;
+ valid = 1;
+ }
+
+ /* If the packet is not fully ready yet, wait for a next segment. */
+ if (epnum && (ep->fifostart[0] << 2) < total)
+ return;
+
+ if (!valid)
+ total = ep->fifostart[0] << 2;
+
+ pid = USB_TOKEN_OUT;
+ if (!epnum && (ep->csr[0] & MGC_M_CSR0_H_SETUPPKT)) {
+ pid = USB_TOKEN_SETUP;
+ if (total != 8)
+ printf("%s: illegal SETUPPKT length of %i bytes\n",
+ __FUNCTION__, total);
+ /* Controller should retry SETUP packets three times on errors
+ * but it doesn't make sense for us to do that. */
+ }
+
+ return musb_packet(s, ep, epnum, pid,
+ total, musb_tx_packet_complete, 0);
+}
+
+static void musb_rx_req(struct musb_s *s, int epnum)
+{
+ struct musb_ep_s *ep = s->ep + epnum;
+ int total;
+
+ /* If we already have a packet, which didn't fit into the
+ * 64 bytes of the FIFO, only move the FIFO start and return. (Obsolete) */
+ if (ep->packey[1].pid == USB_TOKEN_IN && ep->status[1] >= 0 &&
+ (ep->fifostart[1] << 2) + ep->rxcount <
+ ep->packey[1].len) {
+ ep->fifostart[1] += ep->rxcount >> 2;
+ ep->fifolen[1] = 0;
+
+ ep->rxcount = MIN(ep->packey[0].len - (ep->fifostart[1] << 2),
+ ep->maxp[1]);
+
+ ep->csr[1] &= ~MGC_M_RXCSR_H_REQPKT;
+ if (!epnum)
+ ep->csr[0] &= ~MGC_M_CSR0_H_REQPKT;
+
+ /* Clear all of the error bits first */
+ ep->csr[1] &= ~(MGC_M_RXCSR_H_ERROR | MGC_M_RXCSR_H_RXSTALL |
+ MGC_M_RXCSR_DATAERROR);
+ if (!epnum)
+ ep->csr[0] &= ~(MGC_M_CSR0_H_ERROR | MGC_M_CSR0_H_RXSTALL |
+ MGC_M_CSR0_H_NAKTIMEOUT | MGC_M_CSR0_H_NO_PING);
+
+ ep->csr[1] |= MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY;
+ if (!epnum)
+ ep->csr[0] |= MGC_M_CSR0_RXPKTRDY;
+ musb_rx_intr_set(s, epnum, 1);
+ return;
+ }
+
+ /* The driver sets maxp[1] to 64 or less because it knows the hardware
+ * FIFO is this deep. Bigger packets get split in
+ * usb_generic_handle_packet but we can also do the splitting locally
+ * for performance. It turns out we can also have a bigger FIFO and
+ * ignore the limit set in ep->maxp[1]. The Linux MUSB driver deals
+ * OK with single packets of even 32KB and we avoid splitting, however
+ * usb_msd.c sometimes sends a packet bigger than what Linux expects
+ * (e.g. 8192 bytes instead of 4096) and we get an OVERRUN. Splitting
+ * hides this overrun from Linux. Up to 4096 everything is fine
+ * though. Currently this is disabled.
+ *
+ * XXX: mind ep->fifosize. */
+ total = MIN(ep->maxp[1] & 0x3ff, sizeof(s->buf));
+
+#ifdef SETUPLEN_HACK
+ /* Why should *we* do that instead of Linux? */
+ if (!epnum) {
+ if (ep->packey[0].devaddr == 2)
+ total = MIN(s->setup_len, 8);
+ else
+ total = MIN(s->setup_len, 64);
+ s->setup_len -= total;
+ }
+#endif
+
+ return musb_packet(s, ep, epnum, USB_TOKEN_IN,
+ total, musb_rx_packet_complete, 1);
+}
+
+static void musb_ep_frame_cancel(struct musb_ep_s *ep, int dir)
+{
+ if (ep->intv_timer[dir])
+ qemu_del_timer(ep->intv_timer[dir]);
+}
+
+/* Bus control */
+static uint8_t musb_busctl_readb(void *opaque, int ep, int addr)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+
+ switch (addr) {
+ /* For USB2.0 HS hubs only */
+ case MUSB_HDRC_TXHUBADDR:
+ return s->ep[ep].haddr[0];
+ case MUSB_HDRC_TXHUBPORT:
+ return s->ep[ep].hport[0];
+ case MUSB_HDRC_RXHUBADDR:
+ return s->ep[ep].haddr[1];
+ case MUSB_HDRC_RXHUBPORT:
+ return s->ep[ep].hport[1];
+
+ default:
+ printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
+ return 0x00;
+ };
+}
+
+static void musb_busctl_writeb(void *opaque, int ep, int addr, uint8_t value)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+
+ switch (addr) {
+ case MUSB_HDRC_TXHUBADDR:
+ s->ep[ep].haddr[0] = value;
+ break;
+ case MUSB_HDRC_TXHUBPORT:
+ s->ep[ep].hport[0] = value;
+ break;
+ case MUSB_HDRC_RXHUBADDR:
+ s->ep[ep].haddr[1] = value;
+ break;
+ case MUSB_HDRC_RXHUBPORT:
+ s->ep[ep].hport[1] = value;
+ break;
+
+ default:
+ printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
+ };
+}
+
+static uint16_t musb_busctl_readh(void *opaque, int ep, int addr)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+
+ switch (addr) {
+ case MUSB_HDRC_TXFUNCADDR:
+ return s->ep[ep].faddr[0];
+ case MUSB_HDRC_RXFUNCADDR:
+ return s->ep[ep].faddr[1];
+
+ default:
+ return musb_busctl_readb(s, ep, addr) |
+ (musb_busctl_readb(s, ep, addr | 1) << 8);
+ };
+}
+
+static void musb_busctl_writeh(void *opaque, int ep, int addr, uint16_t value)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+
+ switch (addr) {
+ case MUSB_HDRC_TXFUNCADDR:
+ s->ep[ep].faddr[0] = value;
+ break;
+ case MUSB_HDRC_RXFUNCADDR:
+ s->ep[ep].faddr[1] = value;
+ break;
+
+ default:
+ musb_busctl_writeb(s, ep, addr, value & 0xff);
+ musb_busctl_writeb(s, ep, addr | 1, value >> 8);
+ };
+}
+
+/* Endpoint control */
+static uint8_t musb_ep_readb(void *opaque, int ep, int addr)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+
+ switch (addr) {
+ case MUSB_HDRC_TXTYPE:
+ return s->ep[ep].type[0];
+ case MUSB_HDRC_TXINTERVAL:
+ return s->ep[ep].interval[0];
+ case MUSB_HDRC_RXTYPE:
+ return s->ep[ep].type[1];
+ case MUSB_HDRC_RXINTERVAL:
+ return s->ep[ep].interval[1];
+ case (MUSB_HDRC_FIFOSIZE & ~1):
+ return 0x00;
+ case MUSB_HDRC_FIFOSIZE:
+ return ep ? s->ep[ep].fifosize : s->ep[ep].config;
+
+ default:
+ printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
+ return 0x00;
+ };
+}
+
+static void musb_ep_writeb(void *opaque, int ep, int addr, uint8_t value)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+
+ switch (addr) {
+ case MUSB_HDRC_TXTYPE:
+ s->ep[ep].type[0] = value;
+ break;
+ case MUSB_HDRC_TXINTERVAL:
+ s->ep[ep].interval[0] = value;
+ musb_ep_frame_cancel(&s->ep[ep], 0);
+ break;
+ case MUSB_HDRC_RXTYPE:
+ s->ep[ep].type[1] = value;
+ break;
+ case MUSB_HDRC_RXINTERVAL:
+ s->ep[ep].interval[1] = value;
+ musb_ep_frame_cancel(&s->ep[ep], 1);
+ break;
+ case (MUSB_HDRC_FIFOSIZE & ~1):
+ break;
+ case MUSB_HDRC_FIFOSIZE:
+ printf("%s: somebody messes with fifosize (now %i bytes)\n",
+ __FUNCTION__, value);
+ s->ep[ep].fifosize = value;
+ break;
+
+ default:
+ printf("%s: unknown register at %02x\n", __FUNCTION__, addr);
+ };
+}
+
+static uint16_t musb_ep_readh(void *opaque, int ep, int addr)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+ uint16_t ret;
+
+ switch (addr) {
+ case MUSB_HDRC_TXMAXP:
+ return s->ep[ep].maxp[0];
+ case MUSB_HDRC_TXCSR:
+ return s->ep[ep].csr[0];
+ case MUSB_HDRC_RXMAXP:
+ return s->ep[ep].maxp[1];
+ case MUSB_HDRC_RXCSR:
+ ret = s->ep[ep].csr[1];
+
+ /* TODO: This and other bits probably depend on
+ * ep->csr[1] & MGC_M_RXCSR_AUTOCLEAR. */
+ if (s->ep[ep].csr[1] & MGC_M_RXCSR_AUTOCLEAR)
+ s->ep[ep].csr[1] &= ~MGC_M_RXCSR_RXPKTRDY;
+
+ return ret;
+ case MUSB_HDRC_RXCOUNT:
+ return s->ep[ep].rxcount;
+
+ default:
+ return musb_ep_readb(s, ep, addr) |
+ (musb_ep_readb(s, ep, addr | 1) << 8);
+ };
+}
+
+static void musb_ep_writeh(void *opaque, int ep, int addr, uint16_t value)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+
+ switch (addr) {
+ case MUSB_HDRC_TXMAXP:
+ s->ep[ep].maxp[0] = value;
+ break;
+ case MUSB_HDRC_TXCSR:
+ if (ep) {
+ s->ep[ep].csr[0] &= value & 0xa6;
+ s->ep[ep].csr[0] |= value & 0xff59;
+ } else {
+ s->ep[ep].csr[0] &= value & 0x85;
+ s->ep[ep].csr[0] |= value & 0xf7a;
+ }
+
+ musb_ep_frame_cancel(&s->ep[ep], 0);
+
+ if ((ep && (value & MGC_M_TXCSR_FLUSHFIFO)) ||
+ (!ep && (value & MGC_M_CSR0_FLUSHFIFO))) {
+ s->ep[ep].fifolen[0] = 0;
+ s->ep[ep].fifostart[0] = 0;
+ if (ep)
+ s->ep[ep].csr[0] &=
+ ~(MGC_M_TXCSR_FIFONOTEMPTY | MGC_M_TXCSR_TXPKTRDY);
+ else
+ s->ep[ep].csr[0] &=
+ ~(MGC_M_CSR0_TXPKTRDY | MGC_M_CSR0_RXPKTRDY);
+ }
+ if (
+ (ep &&
+#ifdef CLEAR_NAK
+ (value & MGC_M_TXCSR_TXPKTRDY) &&
+ !(value & MGC_M_TXCSR_H_NAKTIMEOUT)) ||
+#else
+ (value & MGC_M_TXCSR_TXPKTRDY)) ||
+#endif
+ (!ep &&
+#ifdef CLEAR_NAK
+ (value & MGC_M_CSR0_TXPKTRDY) &&
+ !(value & MGC_M_CSR0_H_NAKTIMEOUT)))
+#else
+ (value & MGC_M_CSR0_TXPKTRDY)))
+#endif
+ musb_tx_rdy(s, ep);
+ if (!ep &&
+ (value & MGC_M_CSR0_H_REQPKT) &&
+#ifdef CLEAR_NAK
+ !(value & (MGC_M_CSR0_H_NAKTIMEOUT |
+ MGC_M_CSR0_RXPKTRDY)))
+#else
+ !(value & MGC_M_CSR0_RXPKTRDY))
+#endif
+ musb_rx_req(s, ep);
+ break;
+
+ case MUSB_HDRC_RXMAXP:
+ s->ep[ep].maxp[1] = value;
+ break;
+ case MUSB_HDRC_RXCSR:
+ /* (DMA mode only) */
+ if (
+ (value & MGC_M_RXCSR_H_AUTOREQ) &&
+ !(value & MGC_M_RXCSR_RXPKTRDY) &&
+ (s->ep[ep].csr[1] & MGC_M_RXCSR_RXPKTRDY))
+ value |= MGC_M_RXCSR_H_REQPKT;
+
+ s->ep[ep].csr[1] &= 0x102 | (value & 0x4d);
+ s->ep[ep].csr[1] |= value & 0xfeb0;
+
+ musb_ep_frame_cancel(&s->ep[ep], 1);
+
+ if (value & MGC_M_RXCSR_FLUSHFIFO) {
+ s->ep[ep].fifolen[1] = 0;
+ s->ep[ep].fifostart[1] = 0;
+ s->ep[ep].csr[1] &= ~(MGC_M_RXCSR_FIFOFULL | MGC_M_RXCSR_RXPKTRDY);
+ /* If double buffering and we have two packets ready, flush
+ * only the first one and set up the fifo at the second packet. */
+ }
+#ifdef CLEAR_NAK
+ if ((value & MGC_M_RXCSR_H_REQPKT) && !(value & MGC_M_RXCSR_DATAERROR))
+#else
+ if (value & MGC_M_RXCSR_H_REQPKT)
+#endif
+ musb_rx_req(s, ep);
+ break;
+ case MUSB_HDRC_RXCOUNT:
+ s->ep[ep].rxcount = value;
+ break;
+
+ default:
+ musb_ep_writeb(s, ep, addr, value & 0xff);
+ musb_ep_writeb(s, ep, addr | 1, value >> 8);
+ };
+}
+
+/* Generic control */
+static uint32_t musb_readb(void *opaque, target_phys_addr_t addr)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+ int ep, i;
+ uint8_t ret;
+
+ switch (addr) {
+ case MUSB_HDRC_FADDR:
+ return s->faddr;
+ case MUSB_HDRC_POWER:
+ return s->power;
+ case MUSB_HDRC_INTRUSB:
+ ret = s->intr;
+ for (i = 0; i < sizeof(ret) * 8; i ++)
+ if (ret & (1 << i))
+ musb_intr_set(s, i, 0);
+ return ret;
+ case MUSB_HDRC_INTRUSBE:
+ return s->mask;
+ case MUSB_HDRC_INDEX:
+ return s->idx;
+ case MUSB_HDRC_TESTMODE:
+ return 0x00;
+
+ case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
+ return musb_ep_readb(s, s->idx, addr & 0xf);
+
+ case MUSB_HDRC_DEVCTL:
+ return s->devctl;
+
+ case MUSB_HDRC_TXFIFOSZ:
+ case MUSB_HDRC_RXFIFOSZ:
+ case MUSB_HDRC_VCTRL:
+ /* TODO */
+ return 0x00;
+
+ case MUSB_HDRC_HWVERS:
+ return (1 << 10) | 400;
+
+ case (MUSB_HDRC_VCTRL | 1):
+ case (MUSB_HDRC_HWVERS | 1):
+ case (MUSB_HDRC_DEVCTL | 1):
+ return 0x00;
+
+ case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
+ ep = (addr >> 3) & 0xf;
+ return musb_busctl_readb(s, ep, addr & 0x7);
+
+ case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
+ ep = (addr >> 4) & 0xf;
+ return musb_ep_readb(s, ep, addr & 0xf);
+
+ default:
+ printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr);
+ return 0x00;
+ };
+}
+
+static void musb_writeb(void *opaque, target_phys_addr_t addr, uint32_t value)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+ int ep;
+
+ switch (addr) {
+ case MUSB_HDRC_FADDR:
+ s->faddr = value & 0x7f;
+ break;
+ case MUSB_HDRC_POWER:
+ s->power = (value & 0xef) | (s->power & 0x10);
+ /* MGC_M_POWER_RESET is also read-only in Peripheral Mode */
+ if ((value & MGC_M_POWER_RESET) && s->port.dev) {
+ usb_send_msg(s->port.dev, USB_MSG_RESET);
+ /* Negotiate high-speed operation if MGC_M_POWER_HSENAB is set. */
+ if ((value & MGC_M_POWER_HSENAB) &&
+ s->port.dev->speed == USB_SPEED_HIGH)
+ s->power |= MGC_M_POWER_HSMODE; /* Success */
+ /* Restart frame counting. */
+ }
+ if (value & MGC_M_POWER_SUSPENDM) {
+ /* When all transfers finish, suspend and if MGC_M_POWER_ENSUSPEND
+ * is set, also go into low power mode. Frame counting stops. */
+ /* XXX: Cleared when the interrupt register is read */
+ }
+ if (value & MGC_M_POWER_RESUME) {
+ /* Wait 20ms and signal resuming on the bus. Frame counting
+ * restarts. */
+ }
+ break;
+ case MUSB_HDRC_INTRUSB:
+ break;
+ case MUSB_HDRC_INTRUSBE:
+ s->mask = value & 0xff;
+ break;
+ case MUSB_HDRC_INDEX:
+ s->idx = value & 0xf;
+ break;
+ case MUSB_HDRC_TESTMODE:
+ break;
+
+ case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
+ musb_ep_writeb(s, s->idx, addr & 0xf, value);
+ break;
+
+ case MUSB_HDRC_DEVCTL:
+ s->session = !!(value & MGC_M_DEVCTL_SESSION);
+ musb_session_update(s,
+ !!s->port.dev,
+ !!(s->devctl & MGC_M_DEVCTL_SESSION));
+
+ /* It seems this is the only R/W bit in this register? */
+ s->devctl &= ~MGC_M_DEVCTL_SESSION;
+ s->devctl |= value & MGC_M_DEVCTL_SESSION;
+ break;
+
+ case MUSB_HDRC_TXFIFOSZ:
+ case MUSB_HDRC_RXFIFOSZ:
+ case MUSB_HDRC_VCTRL:
+ /* TODO */
+ break;
+
+ case (MUSB_HDRC_VCTRL | 1):
+ case (MUSB_HDRC_DEVCTL | 1):
+ break;
+
+ case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
+ ep = (addr >> 3) & 0xf;
+ musb_busctl_writeb(s, ep, addr & 0x7, value);
+ break;
+
+ case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
+ ep = (addr >> 4) & 0xf;
+ musb_ep_writeb(s, ep, addr & 0xf, value);
+ break;
+
+ default:
+ printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr);
+ };
+}
+
+static uint32_t musb_readh(void *opaque, target_phys_addr_t addr)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+ int ep, i;
+ uint16_t ret;
+
+ switch (addr) {
+ case MUSB_HDRC_INTRTX:
+ ret = s->tx_intr;
+ /* Auto clear */
+ for (i = 0; i < sizeof(ret) * 8; i ++)
+ if (ret & (1 << i))
+ musb_tx_intr_set(s, i, 0);
+ return ret;
+ case MUSB_HDRC_INTRRX:
+ ret = s->rx_intr;
+ /* Auto clear */
+ for (i = 0; i < sizeof(ret) * 8; i ++)
+ if (ret & (1 << i))
+ musb_rx_intr_set(s, i, 0);
+ return ret;
+ case MUSB_HDRC_INTRTXE:
+ return s->tx_mask;
+ case MUSB_HDRC_INTRRXE:
+ return s->rx_mask;
+
+ case MUSB_HDRC_FRAME:
+ /* TODO */
+ return 0x0000;
+ case MUSB_HDRC_TXFIFOADDR:
+ return s->ep[s->idx].fifoaddr[0];
+ case MUSB_HDRC_RXFIFOADDR:
+ return s->ep[s->idx].fifoaddr[1];
+
+ case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
+ return musb_ep_readh(s, s->idx, addr & 0xf);
+
+ case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
+ ep = (addr >> 3) & 0xf;
+ return musb_busctl_readh(s, ep, addr & 0x7);
+
+ case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
+ ep = (addr >> 4) & 0xf;
+ return musb_ep_readh(s, ep, addr & 0xf);
+
+ default:
+ return musb_readb(s, addr) | (musb_readb(s, addr | 1) << 8);
+ };
+}
+
+static void musb_writeh(void *opaque, target_phys_addr_t addr, uint32_t value)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+ int ep;
+
+ switch (addr) {
+ case MUSB_HDRC_INTRTXE:
+ s->tx_mask = value;
+ /* XXX: the masks seem to apply on the raising edge like with
+ * edge-triggered interrupts, thus no need to update. I may be
+ * wrong though. */
+ break;
+ case MUSB_HDRC_INTRRXE:
+ s->rx_mask = value;
+ break;
+
+ case MUSB_HDRC_FRAME:
+ /* TODO */
+ break;
+ case MUSB_HDRC_TXFIFOADDR:
+ s->ep[s->idx].fifoaddr[0] = value;
+ s->ep[s->idx].buf[0] =
+ s->buf + ((value << 1) & (sizeof(s->buf) / 4 - 1));
+ break;
+ case MUSB_HDRC_RXFIFOADDR:
+ s->ep[s->idx].fifoaddr[1] = value;
+ s->ep[s->idx].buf[1] =
+ s->buf + ((value << 1) & (sizeof(s->buf) / 4 - 1));
+ break;
+
+ case MUSB_HDRC_EP_IDX ... (MUSB_HDRC_EP_IDX + 0xf):
+ musb_ep_writeh(s, s->idx, addr & 0xf, value);
+ break;
+
+ case MUSB_HDRC_BUSCTL ... (MUSB_HDRC_BUSCTL + 0x7f):
+ ep = (addr >> 3) & 0xf;
+ musb_busctl_writeh(s, ep, addr & 0x7, value);
+ break;
+
+ case MUSB_HDRC_EP ... (MUSB_HDRC_EP + 0xff):
+ ep = (addr >> 4) & 0xf;
+ musb_ep_writeh(s, ep, addr & 0xf, value);
+ break;
+
+ default:
+ musb_writeb(s, addr, value & 0xff);
+ musb_writeb(s, addr | 1, value >> 8);
+ };
+}
+
+static uint32_t musb_readw(void *opaque, target_phys_addr_t addr)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+ struct musb_ep_s *ep;
+ int epnum;
+
+ switch (addr) {
+ case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
+ epnum = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
+ ep = s->ep + epnum;
+
+ if (ep->fifolen[1] >= 16) {
+ /* We have a FIFO underrun */
+ printf("%s: EP%i FIFO is now empty, stop reading\n",
+ __FUNCTION__, epnum);
+ return 0x00000000;
+ }
+ /* In DMA mode clear RXPKTRDY and set REQPKT automatically
+ * (if AUTOREQ is set) */
+
+ ep->csr[1] &= ~MGC_M_RXCSR_FIFOFULL;
+ return ep->buf[1][ep->fifostart[1] + ep->fifolen[1] ++];
+
+ default:
+ printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr);
+ return 0x00000000;
+ };
+}
+
+static void musb_writew(void *opaque, target_phys_addr_t addr, uint32_t value)
+{
+ struct musb_s *s = (struct musb_s *) opaque;
+ struct musb_ep_s *ep;
+ int epnum;
+
+ switch (addr) {
+ case MUSB_HDRC_FIFO ... (MUSB_HDRC_FIFO + 0x3f):
+ epnum = ((addr - MUSB_HDRC_FIFO) >> 2) & 0xf;
+ ep = s->ep + epnum;
+
+ if (ep->fifolen[0] >= 16) {
+ /* We have a FIFO overrun */
+ printf("%s: EP%i FIFO exceeded 64 bytes, stop feeding data\n",
+ __FUNCTION__, epnum);
+ break;
+ }
+
+ ep->buf[0][ep->fifostart[0] + ep->fifolen[0] ++] = value;
+ if (epnum)
+ ep->csr[0] |= MGC_M_TXCSR_FIFONOTEMPTY;
+ break;
+
+ default:
+ printf("%s: unknown register at %02x\n", __FUNCTION__, (int) addr);
+ };
+}
+
+CPUReadMemoryFunc *musb_read[] = {
+ musb_readb,
+ musb_readh,
+ musb_readw,
+};
+
+CPUWriteMemoryFunc *musb_write[] = {
+ musb_writeb,
+ musb_writeh,
+ musb_writew,
+};
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-04 21:27:59 +0000