[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 18/18] usb: add ehci adapter
|
From: |
Gerd Hoffmann |
|
Subject: |
[Qemu-devel] [PATCH 18/18] usb: add ehci adapter |
|
Date: |
Mon, 23 May 2011 11:43:39 +0200 |
This patch finally merges the EHCI host adapter aka USB 2.0 support.
Based on the ehci bits collected @ git://git.kiszka.org/qemu.git ehci
EHCI has a long out-of-tree history. Project was started by Mark
Burkley, with contributions by Niels de Vos. David S. Ahern continued
working on it. Kevin Wolf, Jan Kiszka and Vincent Palatin contributed
bugfixes.
/me (Gerd Hoffmann) picked it up where it left off, prepared the code
for merge, fixed a few bugs and added basic user docs.
Cc: David S. Ahern <address@hidden>
Cc: Jan Kiszka <address@hidden>
Cc: Kevin Wolf <address@hidden>
Cc: Vincent Palatin <address@hidden>
Signed-off-by: Gerd Hoffmann <address@hidden>
---
Makefile.objs | 1 +
default-configs/pci.mak | 1 +
docs/usb2.txt | 38 +
hw/pci_ids.h | 1 +
hw/usb-ehci.c | 2038 +++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 2079 insertions(+), 0 deletions(-)
create mode 100644 docs/usb2.txt
create mode 100644 hw/usb-ehci.c
diff --git a/Makefile.objs b/Makefile.objs
index 4478c61..90838f6 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -193,6 +193,7 @@ hw-obj-$(CONFIG_PCSPK) += pcspk.o
hw-obj-$(CONFIG_PCKBD) += pckbd.o
hw-obj-$(CONFIG_USB_UHCI) += usb-uhci.o
hw-obj-$(CONFIG_USB_OHCI) += usb-ohci.o
+hw-obj-$(CONFIG_USB_EHCI) += usb-ehci.o
hw-obj-$(CONFIG_FDC) += fdc.o
hw-obj-$(CONFIG_ACPI) += acpi.o acpi_piix4.o
hw-obj-$(CONFIG_APM) += pm_smbus.o apm.o
diff --git a/default-configs/pci.mak b/default-configs/pci.mak
index 0471efb..22bd350 100644
--- a/default-configs/pci.mak
+++ b/default-configs/pci.mak
@@ -3,6 +3,7 @@ CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO=y
CONFIG_USB_UHCI=y
CONFIG_USB_OHCI=y
+CONFIG_USB_EHCI=y
CONFIG_NE2000_PCI=y
CONFIG_EEPRO100_PCI=y
CONFIG_PCNET_PCI=y
diff --git a/docs/usb2.txt b/docs/usb2.txt
new file mode 100644
index 0000000..b283c13
--- /dev/null
+++ b/docs/usb2.txt
@@ -0,0 +1,38 @@
+
+USB 2.0 Quick Start
+===================
+
+The QEMU EHCI Adapter does *not* support companion controllers. That
+implies there are two completely separate USB busses: One USB 1.1 bus
+driven by the UHCI controller and one USB 2.0 bus driven by the EHCI
+controller. Devices must be attached to the correct controller
+manually.
+
+The '-usb' switch will make qemu create the UHCI controller as part of
+the PIIX3 chipset. The USB 1.1 bus will carry the name "usb.0".
+
+You can use the standard -device switch to add a EHCI controller to
+your virtual machine. It is strongly recommended to specify an ID for
+the controller so the USB 2.0 bus gets a individual name, for example
+'-device usb-ehci,id=ehci". This will give you a USB 2.0 bus named
+"ehci.0".
+
+I strongly recomment to also use -device to attach usb devices because
+you can specify the bus they should be attached to this way. Here is
+a complete example:
+
+ qemu -M pc ${otheroptions} \
+ -drive if=none,id=usbstick,file=/path/to/image \
+ -usb \
+ -device usb-ehci,id=ehci \
+ -device usb-tablet,bus=usb.0 \
+ -device usb-storage,bus=ehci.0,drive=usbstick
+
+This attaches a usb tablet to the UHCI adapter and a usb mass storage
+device to the EHCI adapter.
+
+enjoy,
+ Gerd
+
+--
+Gerd Hoffmann <address@hidden>
diff --git a/hw/pci_ids.h b/hw/pci_ids.h
index ea3418c..d9457ed 100644
--- a/hw/pci_ids.h
+++ b/hw/pci_ids.h
@@ -100,6 +100,7 @@
#define PCI_VENDOR_ID_INTEL 0x8086
#define PCI_DEVICE_ID_INTEL_82441 0x1237
#define PCI_DEVICE_ID_INTEL_82801AA_5 0x2415
+#define PCI_DEVICE_ID_INTEL_82801D 0x24CD
#define PCI_DEVICE_ID_INTEL_ESB_9 0x25ab
#define PCI_DEVICE_ID_INTEL_82371SB_0 0x7000
#define PCI_DEVICE_ID_INTEL_82371SB_1 0x7010
diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c
new file mode 100644
index 0000000..545c590
--- /dev/null
+++ b/hw/usb-ehci.c
@@ -0,0 +1,2038 @@
+/*
+ * QEMU USB EHCI Emulation
+ *
+ * Copyright(c) 2008 Emutex Ltd. (address@hidden)
+ *
+ * EHCI project was started by Mark Burkley, with contributions by
+ * Niels de Vos. David S. Ahern continued working on it. Kevin Wolf,
+ * Jan Kiszka and Vincent Palatin contributed bugfixes.
+ *
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or(at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * TODO:
+ * o Downstream port handoff
+ */
+
+#include "hw.h"
+#include "qemu-timer.h"
+#include "usb.h"
+#include "pci.h"
+#include "monitor.h"
+
+#define EHCI_DEBUG 0
+#define STATE_DEBUG 0 /* state transitions */
+
+#if EHCI_DEBUG || STATE_DEBUG
+#define DPRINTF printf
+#else
+#define DPRINTF(...)
+#endif
+
+#if STATE_DEBUG
+#define DPRINTF_ST DPRINTF
+#else
+#define DPRINTF_ST(...)
+#endif
+
+/* internal processing - reset HC to try and recover */
+#define USB_RET_PROCERR (-99)
+
+#define MMIO_SIZE 0x1000
+
+/* Capability Registers Base Address - section 2.2 */
+#define CAPREGBASE 0x0000
+#define CAPLENGTH CAPREGBASE + 0x0000 // 1-byte, 0x0001 reserved
+#define HCIVERSION CAPREGBASE + 0x0002 // 2-bytes, i/f version #
+#define HCSPARAMS CAPREGBASE + 0x0004 // 4-bytes, structural params
+#define HCCPARAMS CAPREGBASE + 0x0008 // 4-bytes, capability params
+#define EECP HCCPARAMS + 1
+#define HCSPPORTROUTE1 CAPREGBASE + 0x000c
+#define HCSPPORTROUTE2 CAPREGBASE + 0x0010
+
+#define OPREGBASE 0x0020 // Operational Registers Base Address
+
+#define USBCMD OPREGBASE + 0x0000
+#define USBCMD_RUNSTOP (1 << 0) // run / Stop
+#define USBCMD_HCRESET (1 << 1) // HC Reset
+#define USBCMD_FLS (3 << 2) // Frame List Size
+#define USBCMD_FLS_SH 2 // Frame List Size Shift
+#define USBCMD_PSE (1 << 4) // Periodic Schedule Enable
+#define USBCMD_ASE (1 << 5) // Asynch Schedule Enable
+#define USBCMD_IAAD (1 << 6) // Int Asynch Advance Doorbell
+#define USBCMD_LHCR (1 << 7) // Light Host Controller Reset
+#define USBCMD_ASPMC (3 << 8) // Async Sched Park Mode Count
+#define USBCMD_ASPME (1 << 11) // Async Sched Park Mode Enable
+#define USBCMD_ITC (0x7f << 16) // Int Threshold Control
+#define USBCMD_ITC_SH 16 // Int Threshold Control Shift
+
+#define USBSTS OPREGBASE + 0x0004
+#define USBSTS_RO_MASK 0x0000003f
+#define USBSTS_INT (1 << 0) // USB Interrupt
+#define USBSTS_ERRINT (1 << 1) // Error Interrupt
+#define USBSTS_PCD (1 << 2) // Port Change Detect
+#define USBSTS_FLR (1 << 3) // Frame List Rollover
+#define USBSTS_HSE (1 << 4) // Host System Error
+#define USBSTS_IAA (1 << 5) // Interrupt on Async Advance
+#define USBSTS_HALT (1 << 12) // HC Halted
+#define USBSTS_REC (1 << 13) // Reclamation
+#define USBSTS_PSS (1 << 14) // Periodic Schedule Status
+#define USBSTS_ASS (1 << 15) // Asynchronous Schedule Status
+
+/*
+ * Interrupt enable bits correspond to the interrupt active bits in USBSTS
+ * so no need to redefine here.
+ */
+#define USBINTR OPREGBASE + 0x0008
+#define USBINTR_MASK 0x0000003f
+
+#define FRINDEX OPREGBASE + 0x000c
+#define CTRLDSSEGMENT OPREGBASE + 0x0010
+#define PERIODICLISTBASE OPREGBASE + 0x0014
+#define ASYNCLISTADDR OPREGBASE + 0x0018
+#define ASYNCLISTADDR_MASK 0xffffffe0
+
+#define CONFIGFLAG OPREGBASE + 0x0040
+
+#define PORTSC (OPREGBASE + 0x0044)
+#define PORTSC_BEGIN PORTSC
+#define PORTSC_END (PORTSC + 4 * NB_PORTS)
+/*
+ * Bits that are reserverd or are read-only are masked out of values
+ * written to us by software
+ */
+#define PORTSC_RO_MASK 0x007021c5
+#define PORTSC_RWC_MASK 0x0000002a
+#define PORTSC_WKOC_E (1 << 22) // Wake on Over Current Enable
+#define PORTSC_WKDS_E (1 << 21) // Wake on Disconnect Enable
+#define PORTSC_WKCN_E (1 << 20) // Wake on Connect Enable
+#define PORTSC_PTC (15 << 16) // Port Test Control
+#define PORTSC_PTC_SH 16 // Port Test Control shift
+#define PORTSC_PIC (3 << 14) // Port Indicator Control
+#define PORTSC_PIC_SH 14 // Port Indicator Control Shift
+#define PORTSC_POWNER (1 << 13) // Port Owner
+#define PORTSC_PPOWER (1 << 12) // Port Power
+#define PORTSC_LINESTAT (3 << 10) // Port Line Status
+#define PORTSC_LINESTAT_SH 10 // Port Line Status Shift
+#define PORTSC_PRESET (1 << 8) // Port Reset
+#define PORTSC_SUSPEND (1 << 7) // Port Suspend
+#define PORTSC_FPRES (1 << 6) // Force Port Resume
+#define PORTSC_OCC (1 << 5) // Over Current Change
+#define PORTSC_OCA (1 << 4) // Over Current Active
+#define PORTSC_PEDC (1 << 3) // Port Enable/Disable Change
+#define PORTSC_PED (1 << 2) // Port Enable/Disable
+#define PORTSC_CSC (1 << 1) // Connect Status Change
+#define PORTSC_CONNECT (1 << 0) // Current Connect Status
+
+#define FRAME_TIMER_FREQ 1000
+#define FRAME_TIMER_USEC (1000000 / FRAME_TIMER_FREQ)
+
+#define NB_MAXINTRATE 8 // Max rate at which controller issues ints
+#define NB_PORTS 4 // Number of downstream ports
+#define BUFF_SIZE 5*4096 // Max bytes to transfer per transaction
+#define MAX_ITERATIONS 20 // Max number of QH before we break the loop
+#define MAX_QH 100 // Max allowable queue heads in a chain
+
+/* Internal periodic / asynchronous schedule state machine states
+ */
+typedef enum {
+ EST_INACTIVE = 1000,
+ EST_ACTIVE,
+ EST_EXECUTING,
+ EST_SLEEPING,
+ /* The following states are internal to the state machine function
+ */
+ EST_WAITLISTHEAD,
+ EST_FETCHENTRY,
+ EST_FETCHQH,
+ EST_FETCHITD,
+ EST_ADVANCEQUEUE,
+ EST_FETCHQTD,
+ EST_EXECUTE,
+ EST_WRITEBACK,
+ EST_HORIZONTALQH
+} EHCI_STATES;
+
+/* macros for accessing fields within next link pointer entry */
+#define NLPTR_GET(x) ((x) & 0xffffffe0)
+#define NLPTR_TYPE_GET(x) (((x) >> 1) & 3)
+#define NLPTR_TBIT(x) ((x) & 1) // 1=invalid, 0=valid
+
+/* link pointer types */
+#define NLPTR_TYPE_ITD 0 // isoc xfer descriptor
+#define NLPTR_TYPE_QH 1 // queue head
+#define NLPTR_TYPE_STITD 2 // split xaction, isoc xfer descriptor
+#define NLPTR_TYPE_FSTN 3 // frame span traversal node
+
+
+/* EHCI spec version 1.0 Section 3.3
+ */
+typedef struct EHCIitd {
+ uint32_t next;
+
+ uint32_t transact[8];
+#define ITD_XACT_ACTIVE (1 << 31)
+#define ITD_XACT_DBERROR (1 << 30)
+#define ITD_XACT_BABBLE (1 << 29)
+#define ITD_XACT_XACTERR (1 << 28)
+#define ITD_XACT_LENGTH_MASK 0x0fff0000
+#define ITD_XACT_LENGTH_SH 16
+#define ITD_XACT_IOC (1 << 15)
+#define ITD_XACT_PGSEL_MASK 0x00007000
+#define ITD_XACT_PGSEL_SH 12
+#define ITD_XACT_OFFSET_MASK 0x00000fff
+
+ uint32_t bufptr[7];
+#define ITD_BUFPTR_MASK 0xfffff000
+#define ITD_BUFPTR_SH 12
+#define ITD_BUFPTR_EP_MASK 0x00000f00
+#define ITD_BUFPTR_EP_SH 8
+#define ITD_BUFPTR_DEVADDR_MASK 0x0000007f
+#define ITD_BUFPTR_DEVADDR_SH 0
+#define ITD_BUFPTR_DIRECTION (1 << 11)
+#define ITD_BUFPTR_MAXPKT_MASK 0x000007ff
+#define ITD_BUFPTR_MAXPKT_SH 0
+#define ITD_BUFPTR_MULT_MASK 0x00000003
+} EHCIitd;
+
+/* EHCI spec version 1.0 Section 3.4
+ */
+typedef struct EHCIsitd {
+ uint32_t next; // Standard next link pointer
+ uint32_t epchar;
+#define SITD_EPCHAR_IO (1 << 31)
+#define SITD_EPCHAR_PORTNUM_MASK 0x7f000000
+#define SITD_EPCHAR_PORTNUM_SH 24
+#define SITD_EPCHAR_HUBADD_MASK 0x007f0000
+#define SITD_EPCHAR_HUBADDR_SH 16
+#define SITD_EPCHAR_EPNUM_MASK 0x00000f00
+#define SITD_EPCHAR_EPNUM_SH 8
+#define SITD_EPCHAR_DEVADDR_MASK 0x0000007f
+
+ uint32_t uframe;
+#define SITD_UFRAME_CMASK_MASK 0x0000ff00
+#define SITD_UFRAME_CMASK_SH 8
+#define SITD_UFRAME_SMASK_MASK 0x000000ff
+
+ uint32_t results;
+#define SITD_RESULTS_IOC (1 << 31)
+#define SITD_RESULTS_PGSEL (1 << 30)
+#define SITD_RESULTS_TBYTES_MASK 0x03ff0000
+#define SITD_RESULTS_TYBYTES_SH 16
+#define SITD_RESULTS_CPROGMASK_MASK 0x0000ff00
+#define SITD_RESULTS_CPROGMASK_SH 8
+#define SITD_RESULTS_ACTIVE (1 << 7)
+#define SITD_RESULTS_ERR (1 << 6)
+#define SITD_RESULTS_DBERR (1 << 5)
+#define SITD_RESULTS_BABBLE (1 << 4)
+#define SITD_RESULTS_XACTERR (1 << 3)
+#define SITD_RESULTS_MISSEDUF (1 << 2)
+#define SITD_RESULTS_SPLITXSTATE (1 << 1)
+
+ uint32_t bufptr[2];
+#define SITD_BUFPTR_MASK 0xfffff000
+#define SITD_BUFPTR_CURROFF_MASK 0x00000fff
+#define SITD_BUFPTR_TPOS_MASK 0x00000018
+#define SITD_BUFPTR_TPOS_SH 3
+#define SITD_BUFPTR_TCNT_MASK 0x00000007
+
+ uint32_t backptr; // Standard next link pointer
+} EHCIsitd;
+
+/* EHCI spec version 1.0 Section 3.5
+ */
+typedef struct EHCIqtd {
+ uint32_t next; // Standard next link pointer
+ uint32_t altnext; // Standard next link pointer
+ uint32_t token;
+#define QTD_TOKEN_DTOGGLE (1 << 31)
+#define QTD_TOKEN_TBYTES_MASK 0x7fff0000
+#define QTD_TOKEN_TBYTES_SH 16
+#define QTD_TOKEN_IOC (1 << 15)
+#define QTD_TOKEN_CPAGE_MASK 0x00007000
+#define QTD_TOKEN_CPAGE_SH 12
+#define QTD_TOKEN_CERR_MASK 0x00000c00
+#define QTD_TOKEN_CERR_SH 10
+#define QTD_TOKEN_PID_MASK 0x00000300
+#define QTD_TOKEN_PID_SH 8
+#define QTD_TOKEN_ACTIVE (1 << 7)
+#define QTD_TOKEN_HALT (1 << 6)
+#define QTD_TOKEN_DBERR (1 << 5)
+#define QTD_TOKEN_BABBLE (1 << 4)
+#define QTD_TOKEN_XACTERR (1 << 3)
+#define QTD_TOKEN_MISSEDUF (1 << 2)
+#define QTD_TOKEN_SPLITXSTATE (1 << 1)
+#define QTD_TOKEN_PING (1 << 0)
+
+ uint32_t bufptr[5]; // Standard buffer pointer
+#define QTD_BUFPTR_MASK 0xfffff000
+} EHCIqtd;
+
+/* EHCI spec version 1.0 Section 3.6
+ */
+typedef struct EHCIqh {
+ uint32_t next; // Standard next link pointer
+
+ /* endpoint characteristics */
+ uint32_t epchar;
+#define QH_EPCHAR_RL_MASK 0xf0000000
+#define QH_EPCHAR_RL_SH 28
+#define QH_EPCHAR_C (1 << 27)
+#define QH_EPCHAR_MPLEN_MASK 0x07FF0000
+#define QH_EPCHAR_MPLEN_SH 16
+#define QH_EPCHAR_H (1 << 15)
+#define QH_EPCHAR_DTC (1 << 14)
+#define QH_EPCHAR_EPS_MASK 0x00003000
+#define QH_EPCHAR_EPS_SH 12
+#define EHCI_QH_EPS_FULL 0
+#define EHCI_QH_EPS_LOW 1
+#define EHCI_QH_EPS_HIGH 2
+#define EHCI_QH_EPS_RESERVED 3
+
+#define QH_EPCHAR_EP_MASK 0x00000f00
+#define QH_EPCHAR_EP_SH 8
+#define QH_EPCHAR_I (1 << 7)
+#define QH_EPCHAR_DEVADDR_MASK 0x0000007f
+#define QH_EPCHAR_DEVADDR_SH 0
+
+ /* endpoint capabilities */
+ uint32_t epcap;
+#define QH_EPCAP_MULT_MASK 0xc0000000
+#define QH_EPCAP_MULT_SH 30
+#define QH_EPCAP_PORTNUM_MASK 0x3f800000
+#define QH_EPCAP_PORTNUM_SH 23
+#define QH_EPCAP_HUBADDR_MASK 0x007f0000
+#define QH_EPCAP_HUBADDR_SH 16
+#define QH_EPCAP_CMASK_MASK 0x0000ff00
+#define QH_EPCAP_CMASK_SH 8
+#define QH_EPCAP_SMASK_MASK 0x000000ff
+#define QH_EPCAP_SMASK_SH 0
+
+ uint32_t current_qtd; // Standard next link pointer
+ uint32_t next_qtd; // Standard next link pointer
+ uint32_t altnext_qtd;
+#define QH_ALTNEXT_NAKCNT_MASK 0x0000001e
+#define QH_ALTNEXT_NAKCNT_SH 1
+
+ uint32_t token; // Same as QTD token
+ uint32_t bufptr[5]; // Standard buffer pointer
+#define BUFPTR_CPROGMASK_MASK 0x000000ff
+#define BUFPTR_FRAMETAG_MASK 0x0000001f
+#define BUFPTR_SBYTES_MASK 0x00000fe0
+#define BUFPTR_SBYTES_SH 5
+} EHCIqh;
+
+/* EHCI spec version 1.0 Section 3.7
+ */
+typedef struct EHCIfstn {
+ uint32_t next; // Standard next link pointer
+ uint32_t backptr; // Standard next link pointer
+} EHCIfstn;
+
+typedef struct {
+ PCIDevice dev;
+ qemu_irq irq;
+ target_phys_addr_t mem_base;
+ int mem;
+ int num_ports;
+ /*
+ * EHCI spec version 1.0 Section 2.3
+ * Host Controller Operational Registers
+ */
+ union {
+ uint8_t mmio[MMIO_SIZE];
+ struct {
+ uint8_t cap[OPREGBASE];
+ uint32_t usbcmd;
+ uint32_t usbsts;
+ uint32_t usbintr;
+ uint32_t frindex;
+ uint32_t ctrldssegment;
+ uint32_t periodiclistbase;
+ uint32_t asynclistaddr;
+ uint32_t notused[9];
+ uint32_t configflag;
+ uint32_t portsc[NB_PORTS];
+ };
+ };
+ /*
+ * Internal states, shadow registers, etc
+ */
+ uint32_t sofv;
+ QEMUTimer *frame_timer;
+ int attach_poll_counter;
+ int astate; // Current state in asynchronous
schedule
+ int pstate; // Current state in periodic schedule
+ USBPort ports[NB_PORTS];
+ uint8_t buffer[BUFF_SIZE];
+ uint32_t usbsts_pending;
+
+ /* cached data from guest - needs to be flushed
+ * when guest removes an entry (doorbell, handshake sequence)
+ */
+ EHCIqh qh; // copy of current QH (being worked on)
+ uint32_t qhaddr; // address QH read from
+
+ EHCIqtd qtd; // copy of current QTD (being worked on)
+ uint32_t qtdaddr; // address QTD read from
+
+ uint32_t itdaddr; // current ITD
+
+ uint32_t fetch_addr; // which address to look at next
+
+ USBBus bus;
+ USBPacket usb_packet;
+ int async_complete;
+ uint32_t tbytes;
+ int pid;
+ int exec_status;
+ int isoch_pause;
+ uint32_t last_run_usec;
+ uint32_t frame_end_usec;
+} EHCIState;
+
+#define SET_LAST_RUN_CLOCK(s) \
+ (s)->last_run_usec = qemu_get_clock_ns(vm_clock) / 1000;
+
+/* nifty macros from Arnon's EHCI version */
+#define get_field(data, field) \
+ (((data) & field##_MASK) >> field##_SH)
+
+#define set_field(data, newval, field) do { \
+ uint32_t val = *data; \
+ val &= ~ field##_MASK; \
+ val |= ((newval) << field##_SH) & field##_MASK; \
+ *data = val; \
+ } while(0)
+
+
+#if EHCI_DEBUG
+static const char *addr2str(unsigned addr)
+{
+ const char *r = " unknown";
+ const char *n[] = {
+ [ CAPLENGTH ] = " CAPLENGTH",
+ [ HCIVERSION ] = "HCIVERSION",
+ [ HCSPARAMS ] = " HCSPARAMS",
+ [ HCCPARAMS ] = " HCCPARAMS",
+ [ USBCMD ] = " COMMAND",
+ [ USBSTS ] = " STATUS",
+ [ USBINTR ] = " INTERRUPT",
+ [ FRINDEX ] = " FRAME IDX",
+ [ PERIODICLISTBASE ] = "P-LIST BASE",
+ [ ASYNCLISTADDR ] = "A-LIST ADDR",
+ [ PORTSC_BEGIN ...
+ PORTSC_END ] = "PORT STATUS",
+ [ CONFIGFLAG ] = "CONFIG FLAG",
+ };
+
+ if (addr < ARRAY_SIZE(n) && n[addr] != NULL) {
+ return n[addr];
+ } else {
+ return r;
+ }
+}
+#endif
+
+
+static inline void ehci_set_interrupt(EHCIState *s, int intr)
+{
+ int level = 0;
+
+ // TODO honour interrupt threshold requests
+
+ s->usbsts |= intr;
+
+ if ((s->usbsts & USBINTR_MASK) & s->usbintr) {
+ level = 1;
+ }
+
+ qemu_set_irq(s->irq, level);
+}
+
+static inline void ehci_record_interrupt(EHCIState *s, int intr)
+{
+ s->usbsts_pending |= intr;
+}
+
+static inline void ehci_commit_interrupt(EHCIState *s)
+{
+ if (!s->usbsts_pending) {
+ return;
+ }
+ ehci_set_interrupt(s, s->usbsts_pending);
+ s->usbsts_pending = 0;
+}
+
+/* Attach or detach a device on root hub */
+
+static void ehci_attach(USBPort *port)
+{
+ EHCIState *s = port->opaque;
+ uint32_t *portsc = &s->portsc[port->index];
+
+ DPRINTF("ehci_attach invoked for index %d, portsc 0x%x, desc %s\n",
+ port->index, *portsc, port->dev->product_desc);
+
+ *portsc |= PORTSC_CONNECT;
+ *portsc |= PORTSC_CSC;
+
+ /*
+ * If a high speed device is attached then we own this port(indicated
+ * by zero in the PORTSC_POWNER bit field) so set the status bit
+ * and set an interrupt if enabled.
+ */
+ if ( !(*portsc & PORTSC_POWNER)) {
+ ehci_set_interrupt(s, USBSTS_PCD);
+ }
+}
+
+static void ehci_detach(USBPort *port)
+{
+ EHCIState *s = port->opaque;
+ uint32_t *portsc = &s->portsc[port->index];
+
+ DPRINTF("ehci_attach invoked for index %d, portsc 0x%x\n",
+ port->index, *portsc);
+
+ *portsc &= ~PORTSC_CONNECT;
+ *portsc |= PORTSC_CSC;
+
+ /*
+ * If a high speed device is attached then we own this port(indicated
+ * by zero in the PORTSC_POWNER bit field) so set the status bit
+ * and set an interrupt if enabled.
+ */
+ if ( !(*portsc & PORTSC_POWNER)) {
+ ehci_set_interrupt(s, USBSTS_PCD);
+ }
+}
+
+/* 4.1 host controller initialization */
+static void ehci_reset(void *opaque)
+{
+ EHCIState *s = opaque;
+ uint8_t *pci_conf;
+ int i;
+
+ pci_conf = s->dev.config;
+
+ memset(&s->mmio[OPREGBASE], 0x00, MMIO_SIZE - OPREGBASE);
+
+ s->usbcmd = NB_MAXINTRATE << USBCMD_ITC_SH;
+ s->usbsts = USBSTS_HALT;
+
+ s->astate = EST_INACTIVE;
+ s->pstate = EST_INACTIVE;
+ s->async_complete = 0;
+ s->isoch_pause = -1;
+ s->attach_poll_counter = 0;
+
+ for(i = 0; i < NB_PORTS; i++) {
+ s->portsc[i] = PORTSC_POWNER | PORTSC_PPOWER;
+
+ if (s->ports[i].dev) {
+ usb_attach(&s->ports[i], s->ports[i].dev);
+ }
+ }
+}
+
+static uint32_t ehci_mem_readb(void *ptr, target_phys_addr_t addr)
+{
+ EHCIState *s = ptr;
+ uint32_t val;
+
+ val = s->mmio[addr];
+
+ return val;
+}
+
+static uint32_t ehci_mem_readw(void *ptr, target_phys_addr_t addr)
+{
+ EHCIState *s = ptr;
+ uint32_t val;
+
+ val = s->mmio[addr] | (s->mmio[addr+1] << 8);
+
+ return val;
+}
+
+static uint32_t ehci_mem_readl(void *ptr, target_phys_addr_t addr)
+{
+ EHCIState *s = ptr;
+ uint32_t val;
+
+ val = s->mmio[addr] | (s->mmio[addr+1] << 8) |
+ (s->mmio[addr+2] << 16) | (s->mmio[addr+3] << 24);
+
+ return val;
+}
+
+static void ehci_mem_writeb(void *ptr, target_phys_addr_t addr, uint32_t val)
+{
+ fprintf(stderr, "EHCI doesn't handle byte writes to MMIO\n");
+ exit(1);
+}
+
+static void ehci_mem_writew(void *ptr, target_phys_addr_t addr, uint32_t val)
+{
+ fprintf(stderr, "EHCI doesn't handle 16-bit writes to MMIO\n");
+ exit(1);
+}
+
+static void handle_port_status_write(EHCIState *s, int port, uint32_t val)
+{
+ uint32_t *portsc = &s->portsc[port];
+ int rwc;
+ USBDevice *dev = s->ports[port].dev;
+
+ DPRINTF("port_status_write: "
+ "PORTSC (port %d) curr %08X new %08X rw-clear %08X rw %08X\n",
+ port, *portsc, val, (val & PORTSC_RWC_MASK), val & PORTSC_RO_MASK);
+
+ rwc = val & PORTSC_RWC_MASK;
+ val &= PORTSC_RO_MASK;
+
+ // handle_read_write_clear(&val, portsc, PORTSC_PEDC | PORTSC_CSC);
+
+ *portsc &= ~rwc;
+
+ if ((val & PORTSC_PRESET) && !(*portsc & PORTSC_PRESET)) {
+ DPRINTF("port_status_write: USBTRAN Port %d reset begin\n", port);
+ }
+
+ if (!(val & PORTSC_PRESET) &&(*portsc & PORTSC_PRESET)) {
+ DPRINTF("port_status_write: USBTRAN Port %d reset done\n", port);
+ usb_attach(&s->ports[port], dev);
+
+ // TODO how to handle reset of ports with no device
+ if (dev) {
+ usb_send_msg(dev, USB_MSG_RESET);
+ }
+
+ if (s->ports[port].dev) {
+ DPRINTF("port_status_write: "
+ "Device was connected before reset, clearing CSC bit\n");
+ *portsc &= ~PORTSC_CSC;
+ }
+
+ /* Table 2.16 Set the enable bit(and enable bit change) to indicate
+ * to SW that this port has a high speed device attached
+ *
+ * TODO - when to disable?
+ */
+ val |= PORTSC_PED;
+ val |= PORTSC_PEDC;
+ }
+
+ *portsc &= ~PORTSC_RO_MASK;
+ *portsc |= val;
+ DPRINTF("port_status_write: Port %d status set to 0x%08x\n", port,
*portsc);
+}
+
+static void ehci_mem_writel(void *ptr, target_phys_addr_t addr, uint32_t val)
+{
+ EHCIState *s = ptr;
+ int i;
+#if EHCI_DEBUG
+ const char *str;
+#endif
+
+ /* Only aligned reads are allowed on OHCI */
+ if (addr & 3) {
+ fprintf(stderr, "usb-ehci: Mis-aligned write to addr 0x"
+ TARGET_FMT_plx "\n", addr);
+ return;
+ }
+
+ if (addr >= PORTSC && addr < PORTSC + 4 * NB_PORTS) {
+ handle_port_status_write(s, (addr-PORTSC)/4, val);
+ return;
+ }
+
+ if (addr < OPREGBASE) {
+ fprintf(stderr, "usb-ehci: write attempt to read-only register"
+ TARGET_FMT_plx "\n", addr);
+ return;
+ }
+
+
+ /* Do any register specific pre-write processing here. */
+#if EHCI_DEBUG
+ str = addr2str((unsigned) addr);
+#endif
+ switch(addr) {
+ case USBCMD:
+ DPRINTF("ehci_mem_writel: USBCMD val=0x%08X, current cmd=0x%08X\n",
+ val, s->usbcmd);
+
+ if ((val & USBCMD_RUNSTOP) && !(s->usbcmd & USBCMD_RUNSTOP)) {
+ DPRINTF("ehci_mem_writel: %s run, clear halt\n", str);
+ qemu_mod_timer(s->frame_timer, qemu_get_clock_ns(vm_clock));
+ SET_LAST_RUN_CLOCK(s);
+ s->usbsts &= ~USBSTS_HALT;
+ }
+
+ if (!(val & USBCMD_RUNSTOP) && (s->usbcmd & USBCMD_RUNSTOP)) {
+ DPRINTF(" ** STOP **\n");
+ qemu_del_timer(s->frame_timer);
+ // TODO - should finish out some stuff before setting halt
+ s->usbsts |= USBSTS_HALT;
+ }
+
+ if (val & USBCMD_HCRESET) {
+ DPRINTF("ehci_mem_writel: %s run, resetting\n", str);
+ ehci_reset(s);
+ val &= ~USBCMD_HCRESET;
+ }
+
+ /* not supporting dynamic frame list size at the moment */
+ if ((val & USBCMD_FLS) && !(s->usbcmd & USBCMD_FLS)) {
+ fprintf(stderr, "attempt to set frame list size -- value %d\n",
+ val & USBCMD_FLS);
+ val &= ~USBCMD_FLS;
+ }
+#if EHCI_DEBUG
+ if ((val & USBCMD_PSE) && !(s->usbcmd & USBCMD_PSE)) {
+ DPRINTF("periodic scheduling enabled\n");
+ }
+ if (!(val & USBCMD_PSE) && (s->usbcmd & USBCMD_PSE)) {
+ DPRINTF("periodic scheduling disabled\n");
+ }
+ if ((val & USBCMD_ASE) && !(s->usbcmd & USBCMD_ASE)) {
+ DPRINTF("asynchronous scheduling enabled\n");
+ }
+ if (!(val & USBCMD_ASE) && (s->usbcmd & USBCMD_ASE)) {
+ DPRINTF("asynchronous scheduling disabled\n");
+ }
+ if ((val & USBCMD_IAAD) && !(s->usbcmd & USBCMD_IAAD)) {
+ DPRINTF("doorbell request received\n");
+ }
+ if ((val & USBCMD_LHCR) && !(s->usbcmd & USBCMD_LHCR)) {
+ DPRINTF("light host controller reset received\n");
+ }
+ if ((val & USBCMD_ITC) != (s->usbcmd & USBCMD_ITC)) {
+ DPRINTF("interrupt threshold control set to %x\n",
+ (val & USBCMD_ITC)>>USBCMD_ITC_SH);
+ }
+#endif
+ break;
+
+
+ case USBSTS:
+ val &= USBSTS_RO_MASK; // bits 6 thru 31 are RO
+ DPRINTF("ehci_mem_writel: %s RWC set to 0x%08X\n", str, val);
+
+ val = (s->usbsts &= ~val); // bits 0 thru 5 are R/WC
+
+ DPRINTF("ehci_mem_writel: %s updating interrupt condition\n", str);
+ ehci_set_interrupt(s, 0);
+ break;
+
+
+ case USBINTR:
+ val &= USBINTR_MASK;
+ DPRINTF("ehci_mem_writel: %s set to 0x%08X\n", str, val);
+ break;
+
+ case FRINDEX:
+ s->sofv = val >> 3;
+ DPRINTF("ehci_mem_writel: %s set to 0x%08X\n", str, val);
+ break;
+
+ case CONFIGFLAG:
+ DPRINTF("ehci_mem_writel: %s set to 0x%08X\n", str, val);
+ val &= 0x1;
+ if (val) {
+ for(i = 0; i < NB_PORTS; i++)
+ s->portsc[i] &= ~PORTSC_POWNER;
+ }
+ break;
+
+ case PERIODICLISTBASE:
+ if ((s->usbcmd & USBCMD_PSE) && (s->usbcmd & USBCMD_RUNSTOP)) {
+ fprintf(stderr,
+ "ehci: PERIODIC list base register set while periodic schedule\n"
+ " is enabled and HC is enabled\n");
+ }
+ DPRINTF("ehci_mem_writel: P-LIST BASE set to 0x%08X\n", val);
+ break;
+
+ case ASYNCLISTADDR:
+ if ((s->usbcmd & USBCMD_ASE) && (s->usbcmd & USBCMD_RUNSTOP)) {
+ fprintf(stderr,
+ "ehci: ASYNC list address register set while async schedule\n"
+ " is enabled and HC is enabled\n");
+ }
+ DPRINTF("ehci_mem_writel: A-LIST ADDR set to 0x%08X\n", val);
+ break;
+ }
+
+ *(uint32_t *)(&s->mmio[addr]) = val;
+}
+
+
+// TODO : Put in common header file, duplication from usb-ohci.c
+
+/* Get an array of dwords from main memory */
+static inline int get_dwords(uint32_t addr, uint32_t *buf, int num)
+{
+ int i;
+
+ for(i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
+ cpu_physical_memory_rw(addr,(uint8_t *)buf, sizeof(*buf), 0);
+ *buf = le32_to_cpu(*buf);
+ }
+
+ return 1;
+}
+
+/* Put an array of dwords in to main memory */
+static inline int put_dwords(uint32_t addr, uint32_t *buf, int num)
+{
+ int i;
+
+ for(i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
+ uint32_t tmp = cpu_to_le32(*buf);
+ cpu_physical_memory_rw(addr,(uint8_t *)&tmp, sizeof(tmp), 1);
+ }
+
+ return 1;
+}
+
+// 4.10.2
+
+static int ehci_qh_do_overlay(EHCIState *ehci, EHCIqh *qh, EHCIqtd *qtd)
+{
+ int i;
+ int dtoggle;
+ int ping;
+ int eps;
+ int reload;
+
+ // remember values in fields to preserve in qh after overlay
+
+ dtoggle = qh->token & QTD_TOKEN_DTOGGLE;
+ ping = qh->token & QTD_TOKEN_PING;
+
+ DPRINTF("setting qh.current from %08X to 0x%08X\n", qh->current_qtd,
+ ehci->qtdaddr);
+ qh->current_qtd = ehci->qtdaddr;
+ qh->next_qtd = qtd->next;
+ qh->altnext_qtd = qtd->altnext;
+ qh->token = qtd->token;
+
+
+ eps = get_field(qh->epchar, QH_EPCHAR_EPS);
+ if (eps == EHCI_QH_EPS_HIGH) {
+ qh->token &= ~QTD_TOKEN_PING;
+ qh->token |= ping;
+ }
+
+ reload = get_field(qh->epchar, QH_EPCHAR_RL);
+ set_field(&qh->altnext_qtd, reload, QH_ALTNEXT_NAKCNT);
+
+ for (i = 0; i < 5; i++) {
+ qh->bufptr[i] = qtd->bufptr[i];
+ }
+
+ if (!(qh->epchar & QH_EPCHAR_DTC)) {
+ // preserve QH DT bit
+ qh->token &= ~QTD_TOKEN_DTOGGLE;
+ qh->token |= dtoggle;
+ }
+
+ qh->bufptr[1] &= ~BUFPTR_CPROGMASK_MASK;
+ qh->bufptr[2] &= ~BUFPTR_FRAMETAG_MASK;
+
+ put_dwords(NLPTR_GET(ehci->qhaddr), (uint32_t *) qh, sizeof(EHCIqh) >> 2);
+
+ return 0;
+}
+
+static int ehci_buffer_rw(uint8_t *buffer, EHCIqh *qh, int bytes, int rw)
+{
+ int bufpos = 0;
+ int cpage, offset;
+ uint32_t head;
+ uint32_t tail;
+
+
+ if (!bytes) {
+ return 0;
+ }
+
+ cpage = get_field(qh->token, QTD_TOKEN_CPAGE);
+ if (cpage > 4) {
+ fprintf(stderr, "cpage out of range (%d)\n", cpage);
+ return USB_RET_PROCERR;
+ }
+
+ offset = qh->bufptr[0] & ~QTD_BUFPTR_MASK;
+ DPRINTF("ehci_buffer_rw: %sing %d bytes %08x cpage %d offset %d\n",
+ rw ? "writ" : "read", bytes, qh->bufptr[0], cpage, offset);
+
+ do {
+ /* start and end of this page */
+ head = qh->bufptr[cpage] & QTD_BUFPTR_MASK;
+ tail = head + ~QTD_BUFPTR_MASK + 1;
+ /* add offset into page */
+ head |= offset;
+
+ if (bytes <= (tail - head)) {
+ tail = head + bytes;
+ }
+
+ DPRINTF("DATA %s cpage:%d head:%08X tail:%08X target:%08X\n",
+ rw ? "WRITE" : "READ ", cpage, head, tail, bufpos);
+
+ cpu_physical_memory_rw(head, &buffer[bufpos], tail - head, rw);
+
+ bufpos += (tail - head);
+ bytes -= (tail - head);
+
+ if (bytes > 0) {
+ cpage++;
+ offset = 0;
+ }
+ } while (bytes > 0);
+
+ /* save cpage */
+ set_field(&qh->token, cpage, QTD_TOKEN_CPAGE);
+
+ /* save offset into cpage */
+ offset = tail - head;
+ qh->bufptr[0] &= ~QTD_BUFPTR_MASK;
+ qh->bufptr[0] |= offset;
+
+ return 0;
+}
+
+static void ehci_async_complete_packet(USBDevice *dev, USBPacket *packet)
+{
+ EHCIState *ehci = container_of(packet, EHCIState, usb_packet);
+
+ DPRINTF("Async packet complete\n");
+ ehci->async_complete = 1;
+ ehci->exec_status = packet->len;
+}
+
+static int ehci_execute_complete(EHCIState *ehci, EHCIqh *qh, int ret)
+{
+ int c_err, reload;
+
+ if (ret == USB_RET_ASYNC && !ehci->async_complete) {
+ DPRINTF("not done yet\n");
+ return ret;
+ }
+
+ ehci->async_complete = 0;
+
+ DPRINTF("execute_complete: qhaddr 0x%x, next %x, qtdaddr 0x%x, status
%d\n",
+ ehci->qhaddr, qh->next, ehci->qtdaddr, ret);
+
+ if (ret < 0) {
+err:
+ /* TO-DO: put this is in a function that can be invoked below as well
*/
+ c_err = get_field(qh->token, QTD_TOKEN_CERR);
+ c_err--;
+ set_field(&qh->token, c_err, QTD_TOKEN_CERR);
+
+ switch(ret) {
+ case USB_RET_NODEV:
+ fprintf(stderr, "USB no device\n");
+ break;
+ case USB_RET_STALL:
+ fprintf(stderr, "USB stall\n");
+ qh->token |= QTD_TOKEN_HALT;
+ ehci_record_interrupt(ehci, USBSTS_ERRINT);
+ break;
+ case USB_RET_NAK:
+ /* 4.10.3 */
+ reload = get_field(qh->epchar, QH_EPCHAR_RL);
+ if ((ehci->pid == USB_TOKEN_IN) && reload) {
+ int nakcnt = get_field(qh->altnext_qtd, QH_ALTNEXT_NAKCNT);
+ nakcnt--;
+ set_field(&qh->altnext_qtd, nakcnt, QH_ALTNEXT_NAKCNT);
+ } else if (!reload) {
+ return USB_RET_NAK;
+ }
+ break;
+ case USB_RET_BABBLE:
+ fprintf(stderr, "USB babble TODO\n");
+ qh->token |= QTD_TOKEN_BABBLE;
+ ehci_record_interrupt(ehci, USBSTS_ERRINT);
+ break;
+ default:
+ fprintf(stderr, "USB invalid response %d to handle\n", ret);
+ /* TO-DO: transaction error */
+ ret = USB_RET_PROCERR;
+ break;
+ }
+ } else {
+ // DPRINTF("Short packet condition\n");
+ // TODO check 4.12 for splits
+
+ if ((ret > ehci->tbytes) && (ehci->pid == USB_TOKEN_IN)) {
+ ret = USB_RET_BABBLE;
+ goto err;
+ }
+
+ if (ehci->tbytes && ehci->pid == USB_TOKEN_IN) {
+ if (ehci_buffer_rw(ehci->buffer, qh, ret, 1) != 0) {
+ return USB_RET_PROCERR;
+ }
+ ehci->tbytes -= ret;
+ } else {
+ ehci->tbytes = 0;
+ }
+
+ DPRINTF("updating tbytes to %d\n", ehci->tbytes);
+ set_field(&qh->token, ehci->tbytes, QTD_TOKEN_TBYTES);
+ }
+
+ qh->token ^= QTD_TOKEN_DTOGGLE;
+ qh->token &= ~QTD_TOKEN_ACTIVE;
+
+ if ((ret >= 0) && (qh->token & QTD_TOKEN_IOC)) {
+ ehci_record_interrupt(ehci, USBSTS_INT);
+ }
+
+ return ret;
+}
+
+// 4.10.3
+
+static int ehci_execute(EHCIState *ehci, EHCIqh *qh)
+{
+ USBPort *port;
+ USBDevice *dev;
+ int ret;
+ int i;
+ int endp;
+ int devadr;
+
+ if ( !(qh->token & QTD_TOKEN_ACTIVE)) {
+ fprintf(stderr, "Attempting to execute inactive QH\n");
+ return USB_RET_PROCERR;
+ }
+
+ ehci->tbytes = (qh->token & QTD_TOKEN_TBYTES_MASK) >> QTD_TOKEN_TBYTES_SH;
+ if (ehci->tbytes > BUFF_SIZE) {
+ fprintf(stderr, "Request for more bytes than allowed\n");
+ return USB_RET_PROCERR;
+ }
+
+ ehci->pid = (qh->token & QTD_TOKEN_PID_MASK) >> QTD_TOKEN_PID_SH;
+ switch(ehci->pid) {
+ case 0: ehci->pid = USB_TOKEN_OUT; break;
+ case 1: ehci->pid = USB_TOKEN_IN; break;
+ case 2: ehci->pid = USB_TOKEN_SETUP; break;
+ default: fprintf(stderr, "bad token\n"); break;
+ }
+
+ if ((ehci->tbytes && ehci->pid != USB_TOKEN_IN) &&
+ (ehci_buffer_rw(ehci->buffer, qh, ehci->tbytes, 0) != 0)) {
+ return USB_RET_PROCERR;
+ }
+
+ endp = get_field(qh->epchar, QH_EPCHAR_EP);
+ devadr = get_field(qh->epchar, QH_EPCHAR_DEVADDR);
+
+ ret = USB_RET_NODEV;
+
+ // TO-DO: associating device with ehci port
+ for(i = 0; i < NB_PORTS; i++) {
+ port = &ehci->ports[i];
+ dev = port->dev;
+
+ // TODO sometime we will also need to check if we are the port owner
+
+ if (!(ehci->portsc[i] &(PORTSC_CONNECT))) {
+ DPRINTF("Port %d, no exec, not connected(%08X)\n",
+ i, ehci->portsc[i]);
+ continue;
+ }
+
+ ehci->usb_packet.pid = ehci->pid;
+ ehci->usb_packet.devaddr = devadr;
+ ehci->usb_packet.devep = endp;
+ ehci->usb_packet.data = ehci->buffer;
+ ehci->usb_packet.len = ehci->tbytes;
+
+ ret = usb_handle_packet(dev, &ehci->usb_packet);
+
+ DPRINTF("submit: qh %x next %x qtd %x pid %x len %d (total %d) endp %x
ret %d\n",
+ ehci->qhaddr, qh->next, ehci->qtdaddr, ehci->pid,
+ ehci->usb_packet.len, ehci->tbytes, endp, ret);
+
+ if (ret != USB_RET_NODEV) {
+ break;
+ }
+ }
+
+ if (ret > BUFF_SIZE) {
+ fprintf(stderr, "ret from usb_handle_packet > BUFF_SIZE\n");
+ return USB_RET_PROCERR;
+ }
+
+ if (ret == USB_RET_ASYNC) {
+ ehci->async_complete = 0;
+ }
+
+ return ret;
+}
+
+/* 4.7.2
+ */
+
+static int ehci_process_itd(EHCIState *ehci,
+ EHCIitd *itd)
+{
+ USBPort *port;
+ USBDevice *dev;
+ int ret;
+ int i, j;
+ int ptr;
+ int pid;
+ int pg;
+ int len;
+ int dir;
+ int devadr;
+ int endp;
+ int maxpkt;
+
+ dir =(itd->bufptr[1] & ITD_BUFPTR_DIRECTION);
+ devadr = get_field(itd->bufptr[0], ITD_BUFPTR_DEVADDR);
+ endp = get_field(itd->bufptr[0], ITD_BUFPTR_EP);
+ maxpkt = get_field(itd->bufptr[1], ITD_BUFPTR_MAXPKT);
+
+ for(i = 0; i < 8; i++) {
+ if (itd->transact[i] & ITD_XACT_ACTIVE) {
+ DPRINTF("ISOCHRONOUS active for frame %d, interval %d\n",
+ ehci->frindex >> 3, i);
+
+ pg = get_field(itd->transact[i], ITD_XACT_PGSEL);
+ ptr = (itd->bufptr[pg] & ITD_BUFPTR_MASK) |
+ (itd->transact[i] & ITD_XACT_OFFSET_MASK);
+ len = get_field(itd->transact[i], ITD_XACT_LENGTH);
+
+ if (len > BUFF_SIZE) {
+ return USB_RET_PROCERR;
+ }
+
+ DPRINTF("ISOCH: buffer %08X len %d\n", ptr, len);
+
+ if (!dir) {
+ cpu_physical_memory_rw(ptr, &ehci->buffer[0], len, 0);
+ pid = USB_TOKEN_OUT;
+ } else
+ pid = USB_TOKEN_IN;
+
+ ret = USB_RET_NODEV;
+
+ for (j = 0; j < NB_PORTS; j++) {
+ port = &ehci->ports[j];
+ dev = port->dev;
+
+ // TODO sometime we will also need to check if we are the port
owner
+
+ if (!(ehci->portsc[j] &(PORTSC_CONNECT))) {
+ DPRINTF("Port %d, no exec, not connected(%08X)\n",
+ j, ehci->portsc[j]);
+ continue;
+ }
+
+ ehci->usb_packet.pid = ehci->pid;
+ ehci->usb_packet.devaddr = devadr;
+ ehci->usb_packet.devep = endp;
+ ehci->usb_packet.data = ehci->buffer;
+ ehci->usb_packet.len = len;
+
+ DPRINTF("calling usb_handle_packet\n");
+ ret = usb_handle_packet(dev, &ehci->usb_packet);
+
+ if (ret != USB_RET_NODEV) {
+ break;
+ }
+ }
+
+ /* In isoch, there is no facility to indicate a NAK so let's
+ * instead just complete a zero-byte transaction. Setting
+ * DBERR seems too draconian.
+ */
+
+ if (ret == USB_RET_NAK) {
+ if (ehci->isoch_pause > 0) {
+ DPRINTF("ISOCH: received a NAK but paused so returning\n");
+ ehci->isoch_pause--;
+ return 0;
+ } else if (ehci->isoch_pause == -1) {
+ DPRINTF("ISOCH: recv NAK & isoch pause inactive,
setting\n");
+ // Pause frindex for up to 50 msec waiting for data from
+ // remote
+ ehci->isoch_pause = 50;
+ return 0;
+ } else {
+ DPRINTF("ISOCH: isoch pause timeout! return 0\n");
+ ret = 0;
+ }
+ } else {
+ DPRINTF("ISOCH: received ACK, clearing pause\n");
+ ehci->isoch_pause = -1;
+ }
+
+ if (ret >= 0) {
+ itd->transact[i] &= ~ITD_XACT_ACTIVE;
+
+ if (itd->transact[i] & ITD_XACT_IOC) {
+ ehci_record_interrupt(ehci, USBSTS_INT);
+ }
+ }
+
+ if (ret >= 0 && dir) {
+ cpu_physical_memory_rw(ptr, &ehci->buffer[0], len, 1);
+
+ if (ret != len) {
+ DPRINTF("ISOCH IN expected %d, got %d\n",
+ len, ret);
+ set_field(&itd->transact[i], ret, ITD_XACT_LENGTH);
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+/* This state is the entry point for asynchronous schedule
+ * processing. Entry here consitutes a EHCI start event state (4.8.5)
+ */
+static int ehci_state_waitlisthead(EHCIState *ehci, int async, int *state)
+{
+ EHCIqh *qh = &ehci->qh;
+ int i = 0;
+ int again = 0;
+ uint32_t entry = ehci->asynclistaddr;
+
+ /* set reclamation flag at start event (4.8.6) */
+ if (async) {
+ ehci->usbsts |= USBSTS_REC;
+ }
+
+ /* Find the head of the list (4.9.1.1) */
+ for(i = 0; i < MAX_QH; i++) {
+ get_dwords(NLPTR_GET(entry), (uint32_t *) qh, sizeof(EHCIqh) >> 2);
+
+ if (qh->epchar & QH_EPCHAR_H) {
+ DPRINTF_ST("WAITLISTHEAD: QH %08X is the HEAD of the list\n",
+ entry);
+ if (async) {
+ entry |= (NLPTR_TYPE_QH << 1);
+ }
+
+ ehci->fetch_addr = entry;
+ *state = EST_FETCHENTRY;
+ again = 1;
+ goto out;
+ }
+
+ DPRINTF_ST("WAITLISTHEAD: QH %08X is NOT the HEAD of the list\n",
+ entry);
+ entry = qh->next;
+ if (entry == ehci->asynclistaddr) {
+ DPRINTF("WAITLISTHEAD: reached beginning of QH list\n");
+ break;
+ }
+ }
+
+ /* no head found for list. */
+
+ *state = EST_ACTIVE;
+
+out:
+ return again;
+}
+
+
+/* This state is the entry point for periodic schedule processing as
+ * well as being a continuation state for async processing.
+ */
+static int ehci_state_fetchentry(EHCIState *ehci, int async, int *state)
+{
+ int again = 0;
+ uint32_t entry = ehci->fetch_addr;
+
+#if EHCI_DEBUG == 0
+ if (qemu_get_clock_ns(vm_clock) / 1000 >= ehci->frame_end_usec) {
+ if (async) {
+ DPRINTF("FETCHENTRY: FRAME timer elapsed, exit state machine\n");
+ goto out;
+ } else {
+ DPRINTF("FETCHENTRY: WARNING "
+ "- frame timer elapsed during periodic\n");
+ }
+ }
+#endif
+ if (entry < 0x1000) {
+ DPRINTF("fetchentry: entry invalid (0x%08x)\n", entry);
+ *state = EST_ACTIVE;
+ goto out;
+ }
+
+ /* section 4.8, only QH in async schedule */
+ if (async && (NLPTR_TYPE_GET(entry) != NLPTR_TYPE_QH)) {
+ fprintf(stderr, "non queue head request in async schedule\n");
+ return -1;
+ }
+
+ switch (NLPTR_TYPE_GET(entry)) {
+ case NLPTR_TYPE_QH:
+ DPRINTF_ST("FETCHENTRY: entry %X is a Queue Head\n", entry);
+ *state = EST_FETCHQH;
+ ehci->qhaddr = entry;
+ again = 1;
+ break;
+
+ case NLPTR_TYPE_ITD:
+ DPRINTF_ST("FETCHENTRY: entry %X is an ITD\n", entry);
+ *state = EST_FETCHITD;
+ ehci->itdaddr = entry;
+ again = 1;
+ break;
+
+ default:
+ // TODO: handle siTD and FSTN types
+ fprintf(stderr, "FETCHENTRY: entry at %X is of type %d "
+ "which is not supported yet\n", entry, NLPTR_TYPE_GET(entry));
+ return -1;
+ }
+
+out:
+ return again;
+}
+
+static int ehci_state_fetchqh(EHCIState *ehci, int async, int *state)
+{
+ EHCIqh *qh = &ehci->qh;
+ int reload;
+ int again = 0;
+
+ get_dwords(NLPTR_GET(ehci->qhaddr), (uint32_t *) qh, sizeof(EHCIqh) >> 2);
+
+ if (async && (qh->epchar & QH_EPCHAR_H)) {
+
+ /* EHCI spec version 1.0 Section 4.8.3 & 4.10.1 */
+ if (ehci->usbsts & USBSTS_REC) {
+ ehci->usbsts &= ~USBSTS_REC;
+ } else {
+ DPRINTF("FETCHQH: QH 0x%08x. H-bit set, reclamation status reset"
+ " - done processing\n", ehci->qhaddr);
+ *state = EST_ACTIVE;
+ goto out;
+ }
+ }
+
+#if EHCI_DEBUG
+ if (ehci->qhaddr != qh->next) {
+ DPRINTF("FETCHQH: QH 0x%08x (h %x halt %x active %x) next 0x%08x\n",
+ ehci->qhaddr,
+ qh->epchar & QH_EPCHAR_H,
+ qh->token & QTD_TOKEN_HALT,
+ qh->token & QTD_TOKEN_ACTIVE,
+ qh->next);
+ }
+#endif
+
+ reload = get_field(qh->epchar, QH_EPCHAR_RL);
+ if (reload) {
+ DPRINTF_ST("FETCHQH: reloading nakcnt to %d\n", reload);
+ set_field(&qh->altnext_qtd, reload, QH_ALTNEXT_NAKCNT);
+ }
+
+ if (qh->token & QTD_TOKEN_HALT) {
+ DPRINTF_ST("FETCHQH: QH Halted, go horizontal\n");
+ *state = EST_HORIZONTALQH;
+ again = 1;
+
+ } else if ((qh->token & QTD_TOKEN_ACTIVE) && (qh->current_qtd > 0x1000)) {
+ DPRINTF_ST("FETCHQH: Active, !Halt, execute - fetch qTD\n");
+ ehci->qtdaddr = qh->current_qtd;
+ *state = EST_FETCHQTD;
+ again = 1;
+
+ } else {
+ /* EHCI spec version 1.0 Section 4.10.2 */
+ DPRINTF_ST("FETCHQH: !Active, !Halt, advance queue\n");
+ *state = EST_ADVANCEQUEUE;
+ again = 1;
+ }
+
+out:
+ return again;
+}
+
+static int ehci_state_fetchitd(EHCIState *ehci, int async, int *state)
+{
+ EHCIitd itd;
+
+ get_dwords(NLPTR_GET(ehci->itdaddr),(uint32_t *) &itd,
+ sizeof(EHCIitd) >> 2);
+ DPRINTF_ST("FETCHITD: Fetched ITD at address %08X " "(next is %08X)\n",
+ ehci->itdaddr, itd.next);
+
+ if (ehci_process_itd(ehci, &itd) != 0) {
+ return -1;
+ }
+
+ put_dwords(NLPTR_GET(ehci->itdaddr), (uint32_t *) &itd,
+ sizeof(EHCIitd) >> 2);
+ ehci->fetch_addr = itd.next;
+ *state = EST_FETCHENTRY;
+
+ return 1;
+}
+
+/* Section 4.10.2 - paragraph 3 */
+static int ehci_state_advqueue(EHCIState *ehci, int async, int *state)
+{
+#if 0
+ /* TO-DO: 4.10.2 - paragraph 2
+ * if I-bit is set to 1 and QH is not active
+ * go to horizontal QH
+ */
+ if (I-bit set) {
+ *state = EST_HORIZONTALQH;
+ goto out;
+ }
+#endif
+
+ /*
+ * want data and alt-next qTD is valid
+ */
+ if (((ehci->qh.token & QTD_TOKEN_TBYTES_MASK) != 0) &&
+ (ehci->qh.altnext_qtd > 0x1000) &&
+ (NLPTR_TBIT(ehci->qh.altnext_qtd) == 0)) {
+ DPRINTF_ST("ADVQUEUE: goto alt next qTD. "
+ "curr 0x%08x next 0x%08x alt 0x%08x (next qh %x)\n",
+ ehci->qh.current_qtd, ehci->qh.altnext_qtd,
+ ehci->qh.next_qtd, ehci->qh.next);
+ ehci->qtdaddr = ehci->qh.altnext_qtd;
+ *state = EST_FETCHQTD;
+
+ /*
+ * next qTD is valid
+ */
+ } else if ((ehci->qh.next_qtd > 0x1000) &&
+ (NLPTR_TBIT(ehci->qh.next_qtd) == 0)) {
+ DPRINTF_ST("ADVQUEUE: next qTD. "
+ "curr 0x%08x next 0x%08x alt 0x%08x (next qh %x)\n",
+ ehci->qh.current_qtd, ehci->qh.altnext_qtd,
+ ehci->qh.next_qtd, ehci->qh.next);
+ ehci->qtdaddr = ehci->qh.next_qtd;
+ *state = EST_FETCHQTD;
+
+ /*
+ * no valid qTD, try next QH
+ */
+ } else {
+ DPRINTF_ST("ADVQUEUE: go to horizontal QH\n");
+ *state = EST_HORIZONTALQH;
+ }
+
+ return 1;
+}
+
+/* Section 4.10.2 - paragraph 4 */
+static int ehci_state_fetchqtd(EHCIState *ehci, int async, int *state)
+{
+ EHCIqtd *qtd = &ehci->qtd;
+ int again = 0;
+
+ get_dwords(NLPTR_GET(ehci->qtdaddr),(uint32_t *) qtd, sizeof(EHCIqtd) >>
2);
+
+ if (qtd->token & QTD_TOKEN_ACTIVE) {
+ *state = EST_EXECUTE;
+ again = 1;
+ } else {
+ *state = EST_HORIZONTALQH;
+ again = 1;
+ }
+
+ return again;
+}
+
+static int ehci_state_horizqh(EHCIState *ehci, int async, int *state)
+{
+ int again = 0;
+
+ if (ehci->fetch_addr != ehci->qh.next) {
+ ehci->fetch_addr = ehci->qh.next;
+ *state = EST_FETCHENTRY;
+ again = 1;
+ } else {
+ *state = EST_ACTIVE;
+ }
+
+ return again;
+}
+
+static int ehci_state_execute(EHCIState *ehci, int async, int *state)
+{
+ EHCIqh *qh = &ehci->qh;
+ EHCIqtd *qtd = &ehci->qtd;
+ int again = 0;
+ int reload, nakcnt;
+ int smask;
+
+ if (async) {
+ DPRINTF_ST(">>>>> ASYNC STATE MACHINE execute QH 0x%08x, QTD 0x%08x\n",
+ ehci->qhaddr, ehci->qtdaddr);
+ } else {
+ DPRINTF_ST(">>>>> PERIODIC STATE MACHINE execute\n");
+ }
+
+ if (ehci_qh_do_overlay(ehci, qh, qtd) != 0) {
+ return -1;
+ }
+
+ smask = get_field(qh->epcap, QH_EPCAP_SMASK);
+
+ if (!smask) {
+ reload = get_field(qh->epchar, QH_EPCHAR_RL);
+ nakcnt = get_field(qh->altnext_qtd, QH_ALTNEXT_NAKCNT);
+ if (reload && !nakcnt) {
+ DPRINTF_ST("EXECUTE: RL != 0 but NakCnt == 0 -- no execute\n");
+ *state = EST_HORIZONTALQH;
+ again = 1;
+ goto out;
+ }
+ }
+
+ // TODO verify enough time remains in the uframe as in 4.4.1.1
+ // TODO write back ptr to async list when done or out of time
+ // TODO Windows does not seem to ever set the MULT field
+
+ if (!async) {
+ int transactCtr = get_field(qh->epcap, QH_EPCAP_MULT);
+ if (!transactCtr) {
+ DPRINTF("ZERO transactctr for int qh, go HORIZ\n");
+ *state = EST_HORIZONTALQH;
+ again = 1;
+ goto out;
+ }
+ }
+
+ if (async) {
+ ehci->usbsts |= USBSTS_REC;
+ }
+
+ ehci->exec_status = ehci_execute(ehci, qh);
+ if (ehci->exec_status == USB_RET_PROCERR) {
+ again = -1;
+ goto out;
+ }
+ *state = EST_EXECUTING;
+
+ if (ehci->exec_status != USB_RET_ASYNC) {
+ again = 1;
+ }
+
+out:
+ return again;
+}
+
+static int ehci_state_executing(EHCIState *ehci, int async, int *state)
+{
+ EHCIqh *qh = &ehci->qh;
+ int again = 0;
+ int reload, nakcnt;
+
+ ehci->exec_status = ehci_execute_complete(ehci, qh, ehci->exec_status);
+ if (ehci->exec_status == USB_RET_ASYNC) {
+ goto out;
+ }
+ if (ehci->exec_status == USB_RET_PROCERR) {
+ again = -1;
+ goto out;
+ }
+
+ // 4.10.3
+ if (!async) {
+ int transactCtr = get_field(qh->epcap, QH_EPCAP_MULT);
+ transactCtr--;
+ set_field(&qh->epcap, transactCtr, QH_EPCAP_MULT);
+ // 4.10.3, bottom of page 82, should exit this state when transaction
+ // counter decrements to 0
+ }
+
+
+ reload = get_field(qh->epchar, QH_EPCHAR_RL);
+ if (reload) {
+ nakcnt = get_field(qh->altnext_qtd, QH_ALTNEXT_NAKCNT);
+ if (ehci->exec_status == USB_RET_NAK) {
+ if (nakcnt) {
+ nakcnt--;
+ }
+ DPRINTF_ST("EXECUTING: Nak occured and RL != 0, dec NakCnt to
%d\n",
+ nakcnt);
+ } else {
+ nakcnt = reload;
+ DPRINTF_ST("EXECUTING: Nak didn't occur, reloading to %d\n",
+ nakcnt);
+ }
+ set_field(&qh->altnext_qtd, nakcnt, QH_ALTNEXT_NAKCNT);
+ }
+
+ /*
+ * Write the qh back to guest physical memory. This step isn't
+ * in the EHCI spec but we need to do it since we don't share
+ * physical memory with our guest VM.
+ */
+
+ DPRINTF("EXECUTING: write QH to VM memory: qhaddr 0x%x, next 0x%x\n",
+ ehci->qhaddr, qh->next);
+ put_dwords(NLPTR_GET(ehci->qhaddr), (uint32_t *) qh, sizeof(EHCIqh) >> 2);
+
+ /* 4.10.5 */
+ if ((ehci->exec_status == USB_RET_NAK) || (qh->token & QTD_TOKEN_ACTIVE)) {
+ *state = EST_HORIZONTALQH;
+ } else {
+ *state = EST_WRITEBACK;
+ }
+
+ again = 1;
+
+out:
+ return again;
+}
+
+
+static int ehci_state_writeback(EHCIState *ehci, int async, int *state)
+{
+ EHCIqh *qh = &ehci->qh;
+ int again = 0;
+
+ /* Write back the QTD from the QH area */
+ DPRINTF_ST("WRITEBACK: write QTD to VM memory\n");
+ put_dwords(NLPTR_GET(ehci->qtdaddr),(uint32_t *) &qh->next_qtd,
+ sizeof(EHCIqtd) >> 2);
+
+ /* TODO confirm next state. For now, keep going if async
+ * but stop after one qtd if periodic
+ */
+ //if (async) {
+ *state = EST_ADVANCEQUEUE;
+ again = 1;
+ //} else {
+ // *state = EST_ACTIVE;
+ //}
+ return again;
+}
+
+/*
+ * This is the state machine that is common to both async and periodic
+ */
+
+static int ehci_advance_state(EHCIState *ehci,
+ int async,
+ int state)
+{
+ int again;
+ int iter = 0;
+
+ do {
+ if (state == EST_FETCHQH) {
+ iter++;
+ /* if we are roaming a lot of QH without executing a qTD
+ * something is wrong with the linked list. TO-DO: why is
+ * this hack needed?
+ */
+ if (iter > MAX_ITERATIONS) {
+ DPRINTF("\n*** advance_state: bailing on MAX ITERATIONS***\n");
+ state = EST_ACTIVE;
+ break;
+ }
+ }
+ switch(state) {
+ case EST_WAITLISTHEAD:
+ again = ehci_state_waitlisthead(ehci, async, &state);
+ break;
+
+ case EST_FETCHENTRY:
+ again = ehci_state_fetchentry(ehci, async, &state);
+ break;
+
+ case EST_FETCHQH:
+ again = ehci_state_fetchqh(ehci, async, &state);
+ break;
+
+ case EST_FETCHITD:
+ again = ehci_state_fetchitd(ehci, async, &state);
+ break;
+
+ case EST_ADVANCEQUEUE:
+ again = ehci_state_advqueue(ehci, async, &state);
+ break;
+
+ case EST_FETCHQTD:
+ again = ehci_state_fetchqtd(ehci, async, &state);
+ break;
+
+ case EST_HORIZONTALQH:
+ again = ehci_state_horizqh(ehci, async, &state);
+ break;
+
+ case EST_EXECUTE:
+ iter = 0;
+ again = ehci_state_execute(ehci, async, &state);
+ break;
+
+ case EST_EXECUTING:
+ again = ehci_state_executing(ehci, async, &state);
+ break;
+
+ case EST_WRITEBACK:
+ again = ehci_state_writeback(ehci, async, &state);
+ break;
+
+ default:
+ fprintf(stderr, "Bad state!\n");
+ again = -1;
+ break;
+ }
+
+ if (again < 0) {
+ fprintf(stderr, "processing error - resetting ehci HC\n");
+ ehci_reset(ehci);
+ again = 0;
+ }
+ }
+ while (again);
+
+ ehci_commit_interrupt(ehci);
+ return state;
+}
+
+static void ehci_advance_async_state(EHCIState *ehci)
+{
+ EHCIqh qh;
+ int state = ehci->astate;
+
+ switch(state) {
+ case EST_INACTIVE:
+ if (!(ehci->usbcmd & USBCMD_ASE)) {
+ break;
+ }
+ ehci->usbsts |= USBSTS_ASS;
+ ehci->astate = EST_ACTIVE;
+ // No break, fall through to ACTIVE
+
+ case EST_ACTIVE:
+ if ( !(ehci->usbcmd & USBCMD_ASE)) {
+ ehci->usbsts &= ~USBSTS_ASS;
+ ehci->astate = EST_INACTIVE;
+ break;
+ }
+
+ /* If the doorbell is set, the guest wants to make a change to the
+ * schedule. The host controller needs to release cached data.
+ * (section 4.8.2)
+ */
+ if (ehci->usbcmd & USBCMD_IAAD) {
+ DPRINTF("ASYNC: doorbell request acknowledged\n");
+ ehci->usbcmd &= ~USBCMD_IAAD;
+ ehci_set_interrupt(ehci, USBSTS_IAA);
+ break;
+ }
+
+ /* make sure guest has acknowledged */
+ /* TO-DO: is this really needed? */
+ if (ehci->usbsts & USBSTS_IAA) {
+ DPRINTF("IAA status bit still set.\n");
+ break;
+ }
+
+ DPRINTF_ST("ASYNC: waiting for listhead, starting at %08x\n",
+ ehci->asynclistaddr);
+ /* check that address register has been set */
+ if (ehci->asynclistaddr == 0) {
+ break;
+ }
+
+ state = EST_WAITLISTHEAD;
+ /* fall through */
+
+ case EST_FETCHENTRY:
+ /* fall through */
+
+ case EST_EXECUTING:
+ get_dwords(NLPTR_GET(ehci->qhaddr), (uint32_t *) &qh,
+ sizeof(EHCIqh) >> 2);
+ ehci->astate = ehci_advance_state(ehci, 1, state);
+ break;
+
+ default:
+ /* this should only be due to a developer mistake */
+ fprintf(stderr, "ehci: Bad asynchronous state %d. "
+ "Resetting to active\n", ehci->astate);
+ ehci->astate = EST_ACTIVE;
+ }
+}
+
+static void ehci_advance_periodic_state(EHCIState *ehci)
+{
+ uint32_t entry;
+ uint32_t list;
+
+ // 4.6
+
+ switch(ehci->pstate) {
+ case EST_INACTIVE:
+ if ( !(ehci->frindex & 7) && (ehci->usbcmd & USBCMD_PSE)) {
+ DPRINTF("PERIODIC going active\n");
+ ehci->usbsts |= USBSTS_PSS;
+ ehci->pstate = EST_ACTIVE;
+ // No break, fall through to ACTIVE
+ } else
+ break;
+
+ case EST_ACTIVE:
+ if ( !(ehci->frindex & 7) && !(ehci->usbcmd & USBCMD_PSE)) {
+ DPRINTF("PERIODIC going inactive\n");
+ ehci->usbsts &= ~USBSTS_PSS;
+ ehci->pstate = EST_INACTIVE;
+ break;
+ }
+
+ list = ehci->periodiclistbase & 0xfffff000;
+ /* check that register has been set */
+ if (list == 0) {
+ break;
+ }
+ list |= ((ehci->frindex & 0x1ff8) >> 1);
+
+ cpu_physical_memory_rw(list, (uint8_t *) &entry, sizeof entry, 0);
+ entry = le32_to_cpu(entry);
+
+ DPRINTF("PERIODIC state adv fr=%d. [%08X] -> %08X\n",
+ ehci->frindex / 8, list, entry);
+ ehci->fetch_addr = entry;
+ ehci->pstate = ehci_advance_state(ehci, 0, EST_FETCHENTRY);
+ break;
+
+ case EST_EXECUTING:
+ DPRINTF("PERIODIC state adv for executing\n");
+ ehci->pstate = ehci_advance_state(ehci, 0, EST_EXECUTING);
+ break;
+
+ default:
+ /* this should only be due to a developer mistake */
+ fprintf(stderr, "ehci: Bad periodic state %d. "
+ "Resetting to active\n", ehci->pstate);
+ ehci->pstate = EST_ACTIVE;
+ }
+}
+
+static void ehci_frame_timer(void *opaque)
+{
+ EHCIState *ehci = opaque;
+ int64_t expire_time, t_now;
+ int usec_elapsed;
+ int frames;
+ int usec_now;
+ int i;
+ int skipped_frames = 0;
+
+
+ t_now = qemu_get_clock_ns(vm_clock);
+ expire_time = t_now + (get_ticks_per_sec() / FRAME_TIMER_FREQ);
+ if (expire_time == t_now) {
+ expire_time++;
+ }
+
+ usec_now = t_now / 1000;
+ usec_elapsed = usec_now - ehci->last_run_usec;
+ frames = usec_elapsed / FRAME_TIMER_USEC;
+ ehci->frame_end_usec = usec_now + FRAME_TIMER_USEC - 10;
+
+ for (i = 0; i < frames; i++) {
+ if ( !(ehci->usbsts & USBSTS_HALT)) {
+ if (ehci->isoch_pause <= 0) {
+ ehci->frindex += 8;
+ }
+
+ if (ehci->frindex > 0x00001fff) {
+ ehci->frindex = 0;
+ ehci_set_interrupt(ehci, USBSTS_FLR);
+ }
+
+ ehci->sofv = (ehci->frindex - 1) >> 3;
+ ehci->sofv &= 0x000003ff;
+ }
+
+ if (frames - i > 10) {
+ skipped_frames++;
+ } else {
+ // TODO could this cause periodic frames to get skipped if async
+ // active?
+ if (ehci->astate != EST_EXECUTING) {
+ ehci_advance_periodic_state(ehci);
+ }
+ }
+
+ ehci->last_run_usec += FRAME_TIMER_USEC;
+ }
+
+#if 0
+ if (skipped_frames) {
+ DPRINTF("WARNING - EHCI skipped %d frames\n", skipped_frames);
+ }
+#endif
+
+ /* Async is not inside loop since it executes everything it can once
+ * called
+ */
+ if (ehci->pstate != EST_EXECUTING) {
+ ehci_advance_async_state(ehci);
+ }
+
+ qemu_mod_timer(ehci->frame_timer, expire_time);
+}
+
+static CPUReadMemoryFunc *ehci_readfn[3]={
+ ehci_mem_readb,
+ ehci_mem_readw,
+ ehci_mem_readl
+};
+
+static CPUWriteMemoryFunc *ehci_writefn[3]={
+ ehci_mem_writeb,
+ ehci_mem_writew,
+ ehci_mem_writel
+};
+
+static void ehci_map(PCIDevice *pci_dev, int region_num,
+ pcibus_t addr, pcibus_t size, int type)
+{
+ EHCIState *s =(EHCIState *)pci_dev;
+
+ DPRINTF("ehci_map: region %d, addr %08" PRIx64 ", size %" PRId64 ", s->mem
%08X\n",
+ region_num, addr, size, s->mem);
+ s->mem_base = addr;
+ cpu_register_physical_memory(addr, size, s->mem);
+}
+
+static int usb_ehci_initfn(PCIDevice *dev);
+
+static USBPortOps ehci_port_ops = {
+ .attach = ehci_attach,
+ .detach = ehci_detach,
+ .complete = ehci_async_complete_packet,
+};
+
+static PCIDeviceInfo ehci_info = {
+ .qdev.name = "usb-ehci",
+ .qdev.size = sizeof(EHCIState),
+ .init = usb_ehci_initfn,
+};
+
+static int usb_ehci_initfn(PCIDevice *dev)
+{
+ EHCIState *s = DO_UPCAST(EHCIState, dev, dev);
+ uint8_t *pci_conf = s->dev.config;
+ int i;
+
+ pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
+ pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82801D);
+ pci_set_byte(&pci_conf[PCI_REVISION_ID], 0x10);
+ pci_set_byte(&pci_conf[PCI_CLASS_PROG], 0x20);
+ pci_config_set_class(pci_conf, PCI_CLASS_SERIAL_USB);
+ pci_set_byte(&pci_conf[PCI_HEADER_TYPE], PCI_HEADER_TYPE_NORMAL);
+
+ /* capabilities pointer */
+ pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x00);
+ //pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x50);
+
+ pci_set_byte(&pci_conf[PCI_INTERRUPT_PIN], 4); // interrupt pin 3
+ pci_set_byte(&pci_conf[PCI_MIN_GNT], 0);
+ pci_set_byte(&pci_conf[PCI_MAX_LAT], 0);
+
+ // pci_conf[0x50] = 0x01; // power management caps
+
+ pci_set_byte(&pci_conf[0x60], 0x20); // spec release number (2.1.4)
+ pci_set_byte(&pci_conf[0x61], 0x20); // frame length adjustment (2.1.5)
+ pci_set_word(&pci_conf[0x62], 0x00); // port wake up capability (2.1.6)
+
+ pci_conf[0x64] = 0x00;
+ pci_conf[0x65] = 0x00;
+ pci_conf[0x66] = 0x00;
+ pci_conf[0x67] = 0x00;
+ pci_conf[0x68] = 0x01;
+ pci_conf[0x69] = 0x00;
+ pci_conf[0x6a] = 0x00;
+ pci_conf[0x6b] = 0x00; // USBLEGSUP
+ pci_conf[0x6c] = 0x00;
+ pci_conf[0x6d] = 0x00;
+ pci_conf[0x6e] = 0x00;
+ pci_conf[0x6f] = 0xc0; // USBLEFCTLSTS
+
+ // 2.2 host controller interface version
+ s->mmio[0x00] = (uint8_t) OPREGBASE;
+ s->mmio[0x01] = 0x00;
+ s->mmio[0x02] = 0x00;
+ s->mmio[0x03] = 0x01; // HC version
+ s->mmio[0x04] = NB_PORTS; // Number of downstream ports
+ s->mmio[0x05] = 0x00; // No companion ports at present
+ s->mmio[0x06] = 0x00;
+ s->mmio[0x07] = 0x00;
+ s->mmio[0x08] = 0x80; // We can cache whole frame, not 64-bit
capable
+ s->mmio[0x09] = 0x68; // EECP
+ s->mmio[0x0a] = 0x00;
+ s->mmio[0x0b] = 0x00;
+
+ s->irq = s->dev.irq[3];
+
+ usb_bus_new(&s->bus, &s->dev.qdev);
+ for(i = 0; i < NB_PORTS; i++) {
+ usb_register_port(&s->bus, &s->ports[i], s, i, &ehci_port_ops,
+ USB_SPEED_MASK_HIGH);
+ usb_port_location(&s->ports[i], NULL, i+1);
+ s->ports[i].dev = 0;
+ }
+
+ s->frame_timer = qemu_new_timer_ns(vm_clock, ehci_frame_timer, s);
+
+ qemu_register_reset(ehci_reset, s);
+
+ s->mem = cpu_register_io_memory(ehci_readfn, ehci_writefn, s,
+ DEVICE_LITTLE_ENDIAN);
+
+ pci_register_bar(&s->dev, 0, MMIO_SIZE, PCI_BASE_ADDRESS_SPACE_MEMORY,
+ ehci_map);
+
+ fprintf(stderr, "*** EHCI support is under development ***\n");
+
+ return 0;
+}
+
+static void ehci_register(void)
+{
+ pci_qdev_register(&ehci_info);
+}
+device_init(ehci_register);
+
+/*
+ * vim: expandtab ts=4
+ */
--
1.7.1
- [Qemu-devel] [PATCH 15/18] usb: add usb_handle_packet, (continued)
- [Qemu-devel] [PATCH 15/18] usb: add usb_handle_packet, Gerd Hoffmann, 2011/05/23
- [Qemu-devel] [PATCH 12/18] usb-linux: split large xfers, Gerd Hoffmann, 2011/05/23
- [Qemu-devel] [PATCH 16/18] usb: keep track of packet owner., Gerd Hoffmann, 2011/05/23
- [Qemu-devel] [PATCH 04/18] usb: add support for "grouped" interfaces and the Interface Association Descriptor, Gerd Hoffmann, 2011/05/23
- [Qemu-devel] [PATCH 17/18] usb: move cancel callback to USBDeviceInfo, Gerd Hoffmann, 2011/05/23
[Qemu-devel] [PATCH 18/18] usb: add ehci adapter,
Gerd Hoffmann <=
Re: [Qemu-devel] [PULL] usb patch queue: initial usb 2.0 support., Gerd Hoffmann, 2011/05/26