[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 8
The attached patches provides part 8 of an architecture implementation for the Tensilica Xtensa CPU series. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Chris Zankel
Linus Torvalds
parent
e344b63eee
commit
7282bee787
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@ -0,0 +1,531 @@
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#
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# Automatically generated make config: don't edit
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# Linux kernel version: 2.6.11-rc2
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# Fri Feb 25 19:21:24 2005
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#
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CONFIG_FRAME_POINTER=y
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CONFIG_XTENSA=y
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# CONFIG_UID16 is not set
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CONFIG_RWSEM_XCHGADD_ALGORITHM=y
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CONFIG_HAVE_DEC_LOCK=y
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CONFIG_GENERIC_HARDIRQS=y
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#
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# Code maturity level options
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#
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CONFIG_EXPERIMENTAL=y
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CONFIG_CLEAN_COMPILE=y
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CONFIG_BROKEN_ON_SMP=y
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#
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# General setup
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#
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CONFIG_LOCALVERSION=""
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CONFIG_SWAP=y
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CONFIG_SYSVIPC=y
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# CONFIG_POSIX_MQUEUE is not set
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# CONFIG_BSD_PROCESS_ACCT is not set
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CONFIG_SYSCTL=y
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# CONFIG_AUDIT is not set
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CONFIG_LOG_BUF_SHIFT=14
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# CONFIG_HOTPLUG is not set
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# CONFIG_KOBJECT_UEVENT is not set
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# CONFIG_IKCONFIG is not set
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CONFIG_EMBEDDED=y
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CONFIG_KALLSYMS=y
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# CONFIG_KALLSYMS_ALL is not set
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# CONFIG_KALLSYMS_EXTRA_PASS is not set
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CONFIG_FUTEX=y
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CONFIG_EPOLL=y
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# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
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CONFIG_SHMEM=y
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CONFIG_CC_ALIGN_FUNCTIONS=0
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CONFIG_CC_ALIGN_LABELS=0
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CONFIG_CC_ALIGN_LOOPS=0
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CONFIG_CC_ALIGN_JUMPS=0
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# CONFIG_TINY_SHMEM is not set
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#
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# Loadable module support
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#
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# CONFIG_MODULES is not set
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#
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# Processor type and features
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#
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CONFIG_XTENSA_ARCH_LINUX_BE=y
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# CONFIG_XTENSA_ARCH_LINUX_LE is not set
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# CONFIG_XTENSA_ARCH_LINUX_TEST is not set
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# CONFIG_XTENSA_ARCH_S5 is not set
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# CONFIG_XTENSA_CUSTOM is not set
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CONFIG_MMU=y
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# CONFIG_XTENSA_UNALIGNED_USER is not set
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# CONFIG_PREEMPT is not set
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# CONFIG_MATH_EMULATION is not set
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# CONFIG_HIGHMEM is not set
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#
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# Platform options
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#
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CONFIG_XTENSA_PLATFORM_ISS=y
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# CONFIG_XTENSA_PLATFORM_XT2000 is not set
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# CONFIG_XTENSA_PLATFORM_ARUBA is not set
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# CONFIG_XTENSA_CALIBRATE_CCOUNT is not set
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CONFIG_XTENSA_CPU_CLOCK=10
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# CONFIG_GENERIC_CALIBRATE_DELAY is not set
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CONFIG_CMDLINE_BOOL=y
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CONFIG_CMDLINE="console=ttyS0,38400 eth0=tuntap,,tap0 ip=192.168.168.5:192.168.168.1 root=nfs nfsroot=192.168.168.1:/opt/montavista/pro/devkit/xtensa/linux_be/target"
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CONFIG_SERIAL_CONSOLE=y
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CONFIG_XTENSA_ISS_NETWORK=y
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#
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# Bus options
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#
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#
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# PCCARD (PCMCIA/CardBus) support
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#
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# CONFIG_PCCARD is not set
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#
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# PC-card bridges
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#
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#
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# PCI Hotplug Support
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#
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#
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# Exectuable file formats
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#
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CONFIG_KCORE_ELF=y
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CONFIG_BINFMT_ELF=y
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# CONFIG_BINFMT_MISC is not set
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#
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# Device Drivers
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#
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#
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# Generic Driver Options
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#
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# CONFIG_STANDALONE is not set
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CONFIG_PREVENT_FIRMWARE_BUILD=y
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# CONFIG_FW_LOADER is not set
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# CONFIG_DEBUG_DRIVER is not set
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#
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# Memory Technology Devices (MTD)
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#
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# CONFIG_MTD is not set
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#
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# Parallel port support
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#
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# CONFIG_PARPORT is not set
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#
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# Plug and Play support
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#
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#
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# Block devices
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#
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# CONFIG_BLK_DEV_FD is not set
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# CONFIG_BLK_DEV_COW_COMMON is not set
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# CONFIG_BLK_DEV_LOOP is not set
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# CONFIG_BLK_DEV_NBD is not set
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# CONFIG_BLK_DEV_RAM is not set
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CONFIG_BLK_DEV_RAM_COUNT=16
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CONFIG_INITRAMFS_SOURCE=""
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# CONFIG_CDROM_PKTCDVD is not set
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#
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# IO Schedulers
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#
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CONFIG_IOSCHED_NOOP=y
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# CONFIG_IOSCHED_AS is not set
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# CONFIG_IOSCHED_DEADLINE is not set
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# CONFIG_IOSCHED_CFQ is not set
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# CONFIG_ATA_OVER_ETH is not set
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#
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# ATA/ATAPI/MFM/RLL support
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#
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# CONFIG_IDE is not set
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#
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# SCSI device support
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#
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# CONFIG_SCSI is not set
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#
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# Multi-device support (RAID and LVM)
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#
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# CONFIG_MD is not set
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#
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# Fusion MPT device support
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#
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#
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# IEEE 1394 (FireWire) support
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#
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#
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# I2O device support
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#
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#
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# Networking support
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#
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CONFIG_NET=y
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#
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# Networking options
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#
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CONFIG_PACKET=y
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# CONFIG_PACKET_MMAP is not set
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# CONFIG_NETLINK_DEV is not set
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CONFIG_UNIX=y
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# CONFIG_NET_KEY is not set
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CONFIG_INET=y
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# CONFIG_IP_MULTICAST is not set
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# CONFIG_IP_ADVANCED_ROUTER is not set
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CONFIG_IP_PNP=y
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CONFIG_IP_PNP_DHCP=y
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CONFIG_IP_PNP_BOOTP=y
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CONFIG_IP_PNP_RARP=y
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# CONFIG_NET_IPIP is not set
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# CONFIG_NET_IPGRE is not set
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# CONFIG_ARPD is not set
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# CONFIG_SYN_COOKIES is not set
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# CONFIG_INET_AH is not set
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# CONFIG_INET_ESP is not set
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# CONFIG_INET_IPCOMP is not set
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# CONFIG_INET_TUNNEL is not set
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# CONFIG_IP_TCPDIAG is not set
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# CONFIG_IP_TCPDIAG_IPV6 is not set
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# CONFIG_IPV6 is not set
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# CONFIG_NETFILTER is not set
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#
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# SCTP Configuration (EXPERIMENTAL)
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#
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# CONFIG_IP_SCTP is not set
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# CONFIG_SCTP_HMAC_NONE is not set
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# CONFIG_SCTP_HMAC_SHA1 is not set
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# CONFIG_SCTP_HMAC_MD5 is not set
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# CONFIG_ATM is not set
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# CONFIG_BRIDGE is not set
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# CONFIG_VLAN_8021Q is not set
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# CONFIG_DECNET is not set
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# CONFIG_LLC2 is not set
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# CONFIG_IPX is not set
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# CONFIG_ATALK is not set
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# CONFIG_X25 is not set
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# CONFIG_LAPB is not set
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# CONFIG_NET_DIVERT is not set
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# CONFIG_ECONET is not set
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# CONFIG_WAN_ROUTER is not set
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#
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# QoS and/or fair queueing
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#
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# CONFIG_NET_SCHED is not set
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# CONFIG_NET_SCH_CLK_JIFFIES is not set
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# CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set
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# CONFIG_NET_SCH_CLK_CPU is not set
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# CONFIG_NET_CLS_ROUTE is not set
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#
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# Network testing
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#
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# CONFIG_NET_PKTGEN is not set
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# CONFIG_NETPOLL is not set
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# CONFIG_NET_POLL_CONTROLLER is not set
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# CONFIG_HAMRADIO is not set
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# CONFIG_IRDA is not set
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# CONFIG_BT is not set
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# CONFIG_NETDEVICES is not set
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#
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# ISDN subsystem
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#
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# CONFIG_ISDN is not set
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#
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# Telephony Support
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#
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# CONFIG_PHONE is not set
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#
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# Input device support
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#
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CONFIG_INPUT=y
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#
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# Userland interfaces
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#
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# CONFIG_INPUT_MOUSEDEV is not set
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# CONFIG_INPUT_JOYDEV is not set
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# CONFIG_INPUT_TSDEV is not set
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# CONFIG_INPUT_EVDEV is not set
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# CONFIG_INPUT_EVBUG is not set
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#
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# Input I/O drivers
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#
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# CONFIG_GAMEPORT is not set
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CONFIG_SOUND_GAMEPORT=y
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# CONFIG_SERIO is not set
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# CONFIG_SERIO_I8042 is not set
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#
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# Input Device Drivers
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#
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# CONFIG_INPUT_KEYBOARD is not set
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# CONFIG_INPUT_MOUSE is not set
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# CONFIG_INPUT_JOYSTICK is not set
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# CONFIG_INPUT_TOUCHSCREEN is not set
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# CONFIG_INPUT_MISC is not set
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#
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# Character devices
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#
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CONFIG_VT=y
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CONFIG_VT_CONSOLE=y
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CONFIG_HW_CONSOLE=y
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# CONFIG_SERIAL_NONSTANDARD is not set
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#
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# Serial drivers
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#
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# CONFIG_SERIAL_8250 is not set
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#
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# Non-8250 serial port support
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#
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CONFIG_UNIX98_PTYS=y
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CONFIG_LEGACY_PTYS=y
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CONFIG_LEGACY_PTY_COUNT=256
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#
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# IPMI
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#
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# CONFIG_IPMI_HANDLER is not set
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#
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# Watchdog Cards
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#
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CONFIG_WATCHDOG=y
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CONFIG_WATCHDOG_NOWAYOUT=y
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#
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# Watchdog Device Drivers
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#
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CONFIG_SOFT_WATCHDOG=y
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# CONFIG_RTC is not set
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# CONFIG_GEN_RTC is not set
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# CONFIG_DTLK is not set
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# CONFIG_R3964 is not set
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#
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# Ftape, the floppy tape device driver
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#
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# CONFIG_DRM is not set
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# CONFIG_RAW_DRIVER is not set
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#
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# I2C support
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#
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# CONFIG_I2C is not set
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#
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# Dallas's 1-wire bus
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#
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# CONFIG_W1 is not set
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#
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# Misc devices
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#
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#
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# Multimedia devices
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#
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# CONFIG_VIDEO_DEV is not set
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#
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# Digital Video Broadcasting Devices
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#
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# CONFIG_DVB is not set
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#
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# Graphics support
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#
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# CONFIG_FB is not set
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#
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# Console display driver support
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#
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# CONFIG_VGA_CONSOLE is not set
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CONFIG_DUMMY_CONSOLE=y
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# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
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||||
#
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||||
# Sound
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||||
#
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# CONFIG_SOUND is not set
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#
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# USB support
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||||
#
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||||
# CONFIG_USB_ARCH_HAS_HCD is not set
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# CONFIG_USB_ARCH_HAS_OHCI is not set
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||||
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||||
#
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||||
# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' may also be needed; see USB_STORAGE Help for more information
|
||||
#
|
||||
|
||||
#
|
||||
# USB Gadget Support
|
||||
#
|
||||
# CONFIG_USB_GADGET is not set
|
||||
|
||||
#
|
||||
# MMC/SD Card support
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||||
#
|
||||
# CONFIG_MMC is not set
|
||||
|
||||
#
|
||||
# InfiniBand support
|
||||
#
|
||||
# CONFIG_INFINIBAND is not set
|
||||
|
||||
#
|
||||
# File systems
|
||||
#
|
||||
# CONFIG_EXT2_FS is not set
|
||||
# CONFIG_EXT3_FS is not set
|
||||
# CONFIG_JBD is not set
|
||||
# CONFIG_REISERFS_FS is not set
|
||||
# CONFIG_JFS_FS is not set
|
||||
# CONFIG_XFS_FS is not set
|
||||
# CONFIG_MINIX_FS is not set
|
||||
# CONFIG_ROMFS_FS is not set
|
||||
# CONFIG_QUOTA is not set
|
||||
# CONFIG_DNOTIFY is not set
|
||||
# CONFIG_AUTOFS_FS is not set
|
||||
# CONFIG_AUTOFS4_FS is not set
|
||||
|
||||
#
|
||||
# CD-ROM/DVD Filesystems
|
||||
#
|
||||
# CONFIG_ISO9660_FS is not set
|
||||
# CONFIG_UDF_FS is not set
|
||||
|
||||
#
|
||||
# DOS/FAT/NT Filesystems
|
||||
#
|
||||
# CONFIG_MSDOS_FS is not set
|
||||
# CONFIG_VFAT_FS is not set
|
||||
# CONFIG_NTFS_FS is not set
|
||||
|
||||
#
|
||||
# Pseudo filesystems
|
||||
#
|
||||
CONFIG_PROC_FS=y
|
||||
CONFIG_PROC_KCORE=y
|
||||
CONFIG_SYSFS=y
|
||||
CONFIG_DEVFS_FS=y
|
||||
CONFIG_DEVFS_MOUNT=y
|
||||
# CONFIG_DEVFS_DEBUG is not set
|
||||
# CONFIG_DEVPTS_FS_XATTR is not set
|
||||
CONFIG_TMPFS=y
|
||||
# CONFIG_TMPFS_XATTR is not set
|
||||
# CONFIG_HUGETLB_PAGE is not set
|
||||
CONFIG_RAMFS=y
|
||||
|
||||
#
|
||||
# Miscellaneous filesystems
|
||||
#
|
||||
# CONFIG_ADFS_FS is not set
|
||||
# CONFIG_AFFS_FS is not set
|
||||
# CONFIG_HFS_FS is not set
|
||||
# CONFIG_HFSPLUS_FS is not set
|
||||
# CONFIG_BEFS_FS is not set
|
||||
# CONFIG_BFS_FS is not set
|
||||
# CONFIG_EFS_FS is not set
|
||||
# CONFIG_CRAMFS is not set
|
||||
# CONFIG_VXFS_FS is not set
|
||||
# CONFIG_HPFS_FS is not set
|
||||
# CONFIG_QNX4FS_FS is not set
|
||||
# CONFIG_SYSV_FS is not set
|
||||
# CONFIG_UFS_FS is not set
|
||||
|
||||
#
|
||||
# Network File Systems
|
||||
#
|
||||
CONFIG_NFS_FS=y
|
||||
CONFIG_NFS_V3=y
|
||||
# CONFIG_NFS_V4 is not set
|
||||
CONFIG_NFS_DIRECTIO=y
|
||||
# CONFIG_NFSD is not set
|
||||
CONFIG_ROOT_NFS=y
|
||||
CONFIG_LOCKD=y
|
||||
CONFIG_LOCKD_V4=y
|
||||
# CONFIG_EXPORTFS is not set
|
||||
CONFIG_SUNRPC=y
|
||||
# CONFIG_RPCSEC_GSS_KRB5 is not set
|
||||
# CONFIG_RPCSEC_GSS_SPKM3 is not set
|
||||
# CONFIG_SMB_FS is not set
|
||||
# CONFIG_CIFS is not set
|
||||
# CONFIG_NCP_FS is not set
|
||||
# CONFIG_CODA_FS is not set
|
||||
# CONFIG_AFS_FS is not set
|
||||
|
||||
#
|
||||
# Partition Types
|
||||
#
|
||||
# CONFIG_PARTITION_ADVANCED is not set
|
||||
CONFIG_MSDOS_PARTITION=y
|
||||
|
||||
#
|
||||
# Native Language Support
|
||||
#
|
||||
# CONFIG_NLS is not set
|
||||
|
||||
#
|
||||
# Kernel hacking
|
||||
#
|
||||
CONFIG_DEBUG_KERNEL=y
|
||||
# CONFIG_DEBUG_STACKOVERFLOW is not set
|
||||
# CONFIG_DEBUG_SLAB is not set
|
||||
# CONFIG_MAGIC_SYSRQ is not set
|
||||
# CONFIG_DEBUG_SPINLOCK is not set
|
||||
# CONFIG_DEBUG_PAGEALLOC is not set
|
||||
# CONFIG_DEBUG_INFO is not set
|
||||
# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
|
||||
# CONFIG_KGDB is not set
|
||||
|
||||
#
|
||||
# Security options
|
||||
#
|
||||
# CONFIG_KEYS is not set
|
||||
# CONFIG_SECURITY is not set
|
||||
|
||||
#
|
||||
# Cryptographic options
|
||||
#
|
||||
# CONFIG_CRYPTO is not set
|
||||
|
||||
#
|
||||
# Hardware crypto devices
|
||||
#
|
||||
|
||||
#
|
||||
# Library routines
|
||||
#
|
||||
# CONFIG_CRC_CCITT is not set
|
||||
# CONFIG_CRC32 is not set
|
||||
# CONFIG_LIBCRC32C is not set
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
# $Id: Makefile,v 1.1.1.1 2002/08/28 16:10:14 aroll Exp $
|
||||
#
|
||||
# Makefile for the Xtensa Instruction Set Simulator (ISS)
|
||||
# "prom monitor" library routines under Linux.
|
||||
#
|
||||
# Note! Dependencies are done automagically by 'make dep', which also
|
||||
# removes any old dependencies. DON'T put your own dependencies here
|
||||
# unless it's something special (ie not a .c file).
|
||||
#
|
||||
# Note 2! The CFLAGS definitions are in the main makefile...
|
||||
|
||||
obj-y = io.o console.o setup.o network.o
|
||||
|
||||
|
|
@ -0,0 +1,303 @@
|
|||
/*
|
||||
* arch/xtensa/platform-iss/console.c
|
||||
*
|
||||
* This file is subject to the terms and conditions of the GNU General Public
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (C) 2001-2005 Tensilica Inc.
|
||||
* Authors Christian Zankel, Joe Taylor
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/config.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/console.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/major.h>
|
||||
#include <linux/param.h>
|
||||
#include <linux/serial.h>
|
||||
#include <linux/serialP.h>
|
||||
#include <linux/console.h>
|
||||
|
||||
#include <asm/uaccess.h>
|
||||
#include <asm/irq.h>
|
||||
|
||||
#include <xtensa/simcall.h>
|
||||
|
||||
#include <linux/tty.h>
|
||||
#include <linux/tty_flip.h>
|
||||
|
||||
#ifdef SERIAL_INLINE
|
||||
#define _INLINE_ inline
|
||||
#endif
|
||||
|
||||
#define SERIAL_MAX_NUM_LINES 1
|
||||
#define SERIAL_TIMER_VALUE (20 * HZ)
|
||||
|
||||
static struct tty_driver *serial_driver;
|
||||
static struct timer_list serial_timer;
|
||||
|
||||
static DEFINE_SPINLOCK(timer_lock);
|
||||
|
||||
int errno;
|
||||
|
||||
static int __simc (int a, int b, int c, int d, int e, int f)
|
||||
{
|
||||
int ret;
|
||||
__asm__ __volatile__ ("simcall\n"
|
||||
"mov %0, a2\n"
|
||||
"mov %1, a3\n" : "=a" (ret), "=a" (errno)
|
||||
: : "a2", "a3");
|
||||
return ret;
|
||||
}
|
||||
|
||||
static char *serial_version = "0.1";
|
||||
static char *serial_name = "ISS serial driver";
|
||||
|
||||
/*
|
||||
* This routine is called whenever a serial port is opened. It
|
||||
* enables interrupts for a serial port, linking in its async structure into
|
||||
* the IRQ chain. It also performs the serial-specific
|
||||
* initialization for the tty structure.
|
||||
*/
|
||||
|
||||
static void rs_poll(unsigned long);
|
||||
|
||||
static int rs_open(struct tty_struct *tty, struct file * filp)
|
||||
{
|
||||
int line = tty->index;
|
||||
|
||||
if ((line < 0) || (line >= SERIAL_MAX_NUM_LINES))
|
||||
return -ENODEV;
|
||||
|
||||
spin_lock(&timer_lock);
|
||||
|
||||
if (tty->count == 1) {
|
||||
init_timer(&serial_timer);
|
||||
serial_timer.data = (unsigned long) tty;
|
||||
serial_timer.function = rs_poll;
|
||||
mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
|
||||
}
|
||||
spin_unlock(&timer_lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* ------------------------------------------------------------
|
||||
* iss_serial_close()
|
||||
*
|
||||
* This routine is called when the serial port gets closed. First, we
|
||||
* wait for the last remaining data to be sent. Then, we unlink its
|
||||
* async structure from the interrupt chain if necessary, and we free
|
||||
* that IRQ if nothing is left in the chain.
|
||||
* ------------------------------------------------------------
|
||||
*/
|
||||
static void rs_close(struct tty_struct *tty, struct file * filp)
|
||||
{
|
||||
spin_lock(&timer_lock);
|
||||
if (tty->count == 1)
|
||||
del_timer_sync(&serial_timer);
|
||||
spin_unlock(&timer_lock);
|
||||
}
|
||||
|
||||
|
||||
static int rs_write(struct tty_struct * tty,
|
||||
const unsigned char *buf, int count)
|
||||
{
|
||||
/* see drivers/char/serialX.c to reference original version */
|
||||
|
||||
__simc (SYS_write, 1, (unsigned long)buf, count, 0, 0);
|
||||
return count;
|
||||
}
|
||||
|
||||
static void rs_poll(unsigned long priv)
|
||||
{
|
||||
struct tty_struct* tty = (struct tty_struct*) priv;
|
||||
|
||||
struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
|
||||
int i = 0;
|
||||
unsigned char c;
|
||||
|
||||
spin_lock(&timer_lock);
|
||||
|
||||
while (__simc(SYS_select_one, 0, XTISS_SELECT_ONE_READ, (int)&tv,0,0)){
|
||||
__simc (SYS_read, 0, (unsigned long)&c, 1, 0, 0);
|
||||
tty->flip.count++;
|
||||
*tty->flip.char_buf_ptr++ = c;
|
||||
*tty->flip.flag_buf_ptr++ = TTY_NORMAL;
|
||||
i++;
|
||||
}
|
||||
|
||||
if (i)
|
||||
tty_flip_buffer_push(tty);
|
||||
|
||||
|
||||
mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
|
||||
spin_unlock(&timer_lock);
|
||||
}
|
||||
|
||||
|
||||
static void rs_put_char(struct tty_struct *tty, unsigned char ch)
|
||||
{
|
||||
char buf[2];
|
||||
|
||||
if (!tty)
|
||||
return;
|
||||
|
||||
buf[0] = ch;
|
||||
buf[1] = '\0'; /* Is this NULL necessary? */
|
||||
__simc (SYS_write, 1, (unsigned long) buf, 1, 0, 0);
|
||||
}
|
||||
|
||||
static void rs_flush_chars(struct tty_struct *tty)
|
||||
{
|
||||
}
|
||||
|
||||
static int rs_write_room(struct tty_struct *tty)
|
||||
{
|
||||
/* Let's say iss can always accept 2K characters.. */
|
||||
return 2 * 1024;
|
||||
}
|
||||
|
||||
static int rs_chars_in_buffer(struct tty_struct *tty)
|
||||
{
|
||||
/* the iss doesn't buffer characters */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void rs_hangup(struct tty_struct *tty)
|
||||
{
|
||||
/* Stub, once again.. */
|
||||
}
|
||||
|
||||
static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
|
||||
{
|
||||
/* Stub, once again.. */
|
||||
}
|
||||
|
||||
static int rs_read_proc(char *page, char **start, off_t off, int count,
|
||||
int *eof, void *data)
|
||||
{
|
||||
int len = 0;
|
||||
off_t begin = 0;
|
||||
|
||||
len += sprintf(page, "serinfo:1.0 driver:%s\n", serial_version);
|
||||
*eof = 1;
|
||||
|
||||
if (off >= len + begin)
|
||||
return 0;
|
||||
|
||||
*start = page + (off - begin);
|
||||
return ((count < begin + len - off) ? count : begin + len - off);
|
||||
}
|
||||
|
||||
|
||||
int register_serial(struct serial_struct*);
|
||||
void unregister_serial(int);
|
||||
|
||||
static struct tty_operations serial_ops = {
|
||||
.open = rs_open,
|
||||
.close = rs_close,
|
||||
.write = rs_write,
|
||||
.put_char = rs_put_char,
|
||||
.flush_chars = rs_flush_chars,
|
||||
.write_room = rs_write_room,
|
||||
.chars_in_buffer = rs_chars_in_buffer,
|
||||
.hangup = rs_hangup,
|
||||
.wait_until_sent = rs_wait_until_sent,
|
||||
.read_proc = rs_read_proc
|
||||
};
|
||||
|
||||
int __init rs_init(void)
|
||||
{
|
||||
serial_driver = alloc_tty_driver(1);
|
||||
|
||||
printk ("%s %s\n", serial_name, serial_version);
|
||||
|
||||
/* Initialize the tty_driver structure */
|
||||
|
||||
serial_driver->owner = THIS_MODULE;
|
||||
serial_driver->driver_name = "iss_serial";
|
||||
serial_driver->name = "ttyS";
|
||||
serial_driver->major = TTY_MAJOR;
|
||||
serial_driver->minor_start = 64;
|
||||
serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
|
||||
serial_driver->subtype = SERIAL_TYPE_NORMAL;
|
||||
serial_driver->init_termios = tty_std_termios;
|
||||
serial_driver->init_termios.c_cflag =
|
||||
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
|
||||
serial_driver->flags = TTY_DRIVER_REAL_RAW;
|
||||
|
||||
tty_set_operations(serial_driver, &serial_ops);
|
||||
|
||||
if (tty_register_driver(serial_driver))
|
||||
panic("Couldn't register serial driver\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static __exit void rs_exit(void)
|
||||
{
|
||||
int error;
|
||||
|
||||
if ((error = tty_unregister_driver(serial_driver)))
|
||||
printk("ISS_SERIAL: failed to unregister serial driver (%d)\n",
|
||||
error);
|
||||
put_tty_driver(serial_driver);
|
||||
}
|
||||
|
||||
|
||||
/* We use `late_initcall' instead of just `__initcall' as a workaround for
|
||||
* the fact that (1) simcons_tty_init can't be called before tty_init,
|
||||
* (2) tty_init is called via `module_init', (3) if statically linked,
|
||||
* module_init == device_init, and (4) there's no ordering of init lists.
|
||||
* We can do this easily because simcons is always statically linked, but
|
||||
* other tty drivers that depend on tty_init and which must use
|
||||
* `module_init' to declare their init routines are likely to be broken.
|
||||
*/
|
||||
|
||||
late_initcall(rs_init);
|
||||
|
||||
|
||||
#ifdef CONFIG_SERIAL_CONSOLE
|
||||
|
||||
static void iss_console_write(struct console *co, const char *s, unsigned count)
|
||||
{
|
||||
int len = strlen(s);
|
||||
|
||||
if (s != 0 && *s != 0)
|
||||
__simc (SYS_write, 1, (unsigned long)s,
|
||||
count < len ? count : len,0,0);
|
||||
}
|
||||
|
||||
static struct tty_driver* iss_console_device(struct console *c, int *index)
|
||||
{
|
||||
*index = c->index;
|
||||
return serial_driver;
|
||||
}
|
||||
|
||||
|
||||
static struct console sercons = {
|
||||
.name = "ttyS",
|
||||
.write = iss_console_write,
|
||||
.device = iss_console_device,
|
||||
.flags = CON_PRINTBUFFER,
|
||||
.index = -1
|
||||
};
|
||||
|
||||
static int __init iss_console_init(void)
|
||||
{
|
||||
register_console(&sercons);
|
||||
return 0;
|
||||
}
|
||||
|
||||
console_initcall(iss_console_init);
|
||||
|
||||
#endif /* CONFIG_SERIAL_CONSOLE */
|
||||
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
/* This file isn't really needed right now. */
|
||||
|
||||
#if 0
|
||||
|
||||
#include <asm/io.h>
|
||||
#include <xtensa/simcall.h>
|
||||
|
||||
extern int __simc ();
|
||||
|
||||
|
||||
char iss_serial_getc()
|
||||
{
|
||||
char c;
|
||||
__simc( SYS_read, 0, &c, 1 );
|
||||
return c;
|
||||
}
|
||||
|
||||
void iss_serial_putc( char c )
|
||||
{
|
||||
__simc( SYS_write, 1, &c, 1 );
|
||||
}
|
||||
|
||||
void iss_serial_puts( char *s )
|
||||
{
|
||||
if( s != 0 && *s != 0 )
|
||||
__simc( SYS_write, 1, s, strlen(s) );
|
||||
}
|
||||
|
||||
/*#error Need I/O ports to specific hardware!*/
|
||||
|
||||
#endif
|
||||
|
||||
|
|
@ -0,0 +1,855 @@
|
|||
/*
|
||||
*
|
||||
* arch/xtensa/platform-iss/network.c
|
||||
*
|
||||
* Platform specific initialization.
|
||||
*
|
||||
* Authors: Chris Zankel <chris@zankel.net>
|
||||
* Based on work form the UML team.
|
||||
*
|
||||
* Copyright 2005 Tensilica Inc.
|
||||
*
|
||||
* 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 of the License, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/config.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/timer.h>
|
||||
#include <linux/if_ether.h>
|
||||
#include <linux/inetdevice.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/if_tun.h>
|
||||
#include <linux/etherdevice.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/ioctl.h>
|
||||
#include <linux/bootmem.h>
|
||||
#include <linux/ethtool.h>
|
||||
#include <linux/rtnetlink.h>
|
||||
#include <linux/timer.h>
|
||||
|
||||
#include <xtensa/simcall.h>
|
||||
|
||||
#define DRIVER_NAME "iss-netdev"
|
||||
#define ETH_MAX_PACKET 1500
|
||||
#define ETH_HEADER_OTHER 14
|
||||
#define ISS_NET_TIMER_VALUE (2 * HZ)
|
||||
|
||||
|
||||
static DEFINE_SPINLOCK(opened_lock);
|
||||
static LIST_HEAD(opened);
|
||||
|
||||
static DEFINE_SPINLOCK(devices_lock);
|
||||
static LIST_HEAD(devices);
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
/* We currently only support the TUNTAP transport protocol. */
|
||||
|
||||
#define TRANSPORT_TUNTAP_NAME "tuntap"
|
||||
#define TRANSPORT_TUNTAP_MTU ETH_MAX_PACKET
|
||||
|
||||
struct tuntap_info {
|
||||
char dev_name[IFNAMSIZ];
|
||||
int fixed_config;
|
||||
unsigned char gw[ETH_ALEN];
|
||||
int fd;
|
||||
};
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
|
||||
/* This structure contains out private information for the driver. */
|
||||
|
||||
struct iss_net_private {
|
||||
|
||||
struct list_head device_list;
|
||||
struct list_head opened_list;
|
||||
|
||||
spinlock_t lock;
|
||||
struct net_device *dev;
|
||||
struct platform_device pdev;
|
||||
struct timer_list tl;
|
||||
struct net_device_stats stats;
|
||||
|
||||
struct timer_list timer;
|
||||
unsigned int timer_val;
|
||||
|
||||
int index;
|
||||
int mtu;
|
||||
|
||||
unsigned char mac[ETH_ALEN];
|
||||
int have_mac;
|
||||
|
||||
struct {
|
||||
union {
|
||||
struct tuntap_info tuntap;
|
||||
} info;
|
||||
|
||||
int (*open)(struct iss_net_private *lp);
|
||||
void (*close)(struct iss_net_private *lp);
|
||||
int (*read)(struct iss_net_private *lp, struct sk_buff **skb);
|
||||
int (*write)(struct iss_net_private *lp, struct sk_buff **skb);
|
||||
unsigned short (*protocol)(struct sk_buff *skb);
|
||||
int (*poll)(struct iss_net_private *lp);
|
||||
} tp;
|
||||
|
||||
};
|
||||
|
||||
/* ======================= ISS SIMCALL INTERFACE =========================== */
|
||||
|
||||
/* Note: __simc must _not_ be declared inline! */
|
||||
|
||||
static int errno;
|
||||
|
||||
static int __simc (int a, int b, int c, int d, int e, int f)
|
||||
{
|
||||
int ret;
|
||||
__asm__ __volatile__ ("simcall\n"
|
||||
"mov %0, a2\n"
|
||||
"mov %1, a3\n" : "=a" (ret), "=a" (errno)
|
||||
: : "a2", "a3");
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int inline simc_open(char *file, int flags, int mode)
|
||||
{
|
||||
return __simc(SYS_open, (int) file, flags, mode, 0, 0);
|
||||
}
|
||||
|
||||
static int inline simc_close(int fd)
|
||||
{
|
||||
return __simc(SYS_close, fd, 0, 0, 0, 0);
|
||||
}
|
||||
|
||||
static int inline simc_ioctl(int fd, int request, void *arg)
|
||||
{
|
||||
return __simc(SYS_ioctl, fd, request, (int) arg, 0, 0);
|
||||
}
|
||||
|
||||
static int inline simc_read(int fd, void *buf, size_t count)
|
||||
{
|
||||
return __simc(SYS_read, fd, (int) buf, count, 0, 0);
|
||||
}
|
||||
|
||||
static int inline simc_write(int fd, void *buf, size_t count)
|
||||
{
|
||||
return __simc(SYS_write, fd, (int) buf, count, 0, 0);
|
||||
}
|
||||
|
||||
static int inline simc_poll(int fd)
|
||||
{
|
||||
struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
|
||||
|
||||
return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv,0,0);
|
||||
}
|
||||
|
||||
/* ================================ HELPERS ================================ */
|
||||
|
||||
|
||||
static char *split_if_spec(char *str, ...)
|
||||
{
|
||||
char **arg, *end;
|
||||
va_list ap;
|
||||
|
||||
va_start(ap, str);
|
||||
while ((arg = va_arg(ap, char**)) != NULL) {
|
||||
if (*str == '\0')
|
||||
return NULL;
|
||||
end = strchr(str, ',');
|
||||
if (end != str)
|
||||
*arg = str;
|
||||
if (end == NULL)
|
||||
return NULL;
|
||||
*end ++ = '\0';
|
||||
str = end;
|
||||
}
|
||||
va_end(ap);
|
||||
return str;
|
||||
}
|
||||
|
||||
|
||||
#if 0
|
||||
/* Adjust SKB. */
|
||||
|
||||
struct sk_buff *ether_adjust_skb(struct sk_buff *skb, int extra)
|
||||
{
|
||||
if ((skb != NULL) && (skb_tailroom(skb) < extra)) {
|
||||
struct sk_buff *skb2;
|
||||
|
||||
skb2 = skb_copy_expand(skb, 0, extra, GFP_ATOMIC);
|
||||
dev_kfree_skb(skb);
|
||||
skb = skb2;
|
||||
}
|
||||
if (skb != NULL)
|
||||
skb_put(skb, extra);
|
||||
|
||||
return skb;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Return the IP address as a string for a given device. */
|
||||
|
||||
static void dev_ip_addr(void *d, char *buf, char *bin_buf)
|
||||
{
|
||||
struct net_device *dev = d;
|
||||
struct in_device *ip = dev->ip_ptr;
|
||||
struct in_ifaddr *in;
|
||||
u32 addr;
|
||||
|
||||
if ((ip == NULL) || ((in = ip->ifa_list) == NULL)) {
|
||||
printk(KERN_WARNING "Device not assigned an IP address!\n");
|
||||
return;
|
||||
}
|
||||
|
||||
addr = in->ifa_address;
|
||||
sprintf(buf, "%d.%d.%d.%d", addr & 0xff, (addr >> 8) & 0xff,
|
||||
(addr >> 16) & 0xff, addr >> 24);
|
||||
|
||||
if (bin_buf) {
|
||||
bin_buf[0] = addr & 0xff;
|
||||
bin_buf[1] = (addr >> 8) & 0xff;
|
||||
bin_buf[2] = (addr >> 16) & 0xff;
|
||||
bin_buf[3] = addr >> 24;
|
||||
}
|
||||
}
|
||||
|
||||
/* Set Ethernet address of the specified device. */
|
||||
|
||||
static void inline set_ether_mac(void *d, unsigned char *addr)
|
||||
{
|
||||
struct net_device *dev = d;
|
||||
memcpy(dev->dev_addr, addr, ETH_ALEN);
|
||||
}
|
||||
|
||||
|
||||
/* ======================= TUNTAP TRANSPORT INTERFACE ====================== */
|
||||
|
||||
static int tuntap_open(struct iss_net_private *lp)
|
||||
{
|
||||
struct ifreq ifr;
|
||||
char *dev_name = lp->tp.info.tuntap.dev_name;
|
||||
int err = -EINVAL;
|
||||
int fd;
|
||||
|
||||
/* We currently only support a fixed configuration. */
|
||||
|
||||
if (!lp->tp.info.tuntap.fixed_config)
|
||||
return -EINVAL;
|
||||
|
||||
if ((fd = simc_open("/dev/net/tun", 02, 0)) < 0) { /* O_RDWR */
|
||||
printk("Failed to open /dev/net/tun, returned %d "
|
||||
"(errno = %d)\n", fd, errno);
|
||||
return fd;
|
||||
}
|
||||
|
||||
memset(&ifr, 0, sizeof ifr);
|
||||
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
|
||||
strlcpy(ifr.ifr_name, dev_name, sizeof ifr.ifr_name - 1);
|
||||
|
||||
if ((err = simc_ioctl(fd, TUNSETIFF, (void*) &ifr)) < 0) {
|
||||
printk("Failed to set interface, returned %d "
|
||||
"(errno = %d)\n", err, errno);
|
||||
simc_close(fd);
|
||||
return err;
|
||||
}
|
||||
|
||||
lp->tp.info.tuntap.fd = fd;
|
||||
return err;
|
||||
}
|
||||
|
||||
static void tuntap_close(struct iss_net_private *lp)
|
||||
{
|
||||
#if 0
|
||||
if (lp->tp.info.tuntap.fixed_config)
|
||||
iter_addresses(lp->tp.info.tuntap.dev, close_addr, lp->host.dev_name);
|
||||
#endif
|
||||
simc_close(lp->tp.info.tuntap.fd);
|
||||
lp->tp.info.tuntap.fd = -1;
|
||||
}
|
||||
|
||||
static int tuntap_read (struct iss_net_private *lp, struct sk_buff **skb)
|
||||
{
|
||||
#if 0
|
||||
*skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER);
|
||||
if (*skb == NULL)
|
||||
return -ENOMEM;
|
||||
#endif
|
||||
|
||||
return simc_read(lp->tp.info.tuntap.fd,
|
||||
(*skb)->data, (*skb)->dev->mtu + ETH_HEADER_OTHER);
|
||||
}
|
||||
|
||||
static int tuntap_write (struct iss_net_private *lp, struct sk_buff **skb)
|
||||
{
|
||||
return simc_write(lp->tp.info.tuntap.fd, (*skb)->data, (*skb)->len);
|
||||
}
|
||||
|
||||
unsigned short tuntap_protocol(struct sk_buff *skb)
|
||||
{
|
||||
return eth_type_trans(skb, skb->dev);
|
||||
}
|
||||
|
||||
static int tuntap_poll(struct iss_net_private *lp)
|
||||
{
|
||||
return simc_poll(lp->tp.info.tuntap.fd);
|
||||
}
|
||||
|
||||
/*
|
||||
* Currently only a device name is supported.
|
||||
* ethX=tuntap[,[mac address][,[device name]]]
|
||||
*/
|
||||
|
||||
static int tuntap_probe(struct iss_net_private *lp, int index, char *init)
|
||||
{
|
||||
const int len = strlen(TRANSPORT_TUNTAP_NAME);
|
||||
char *dev_name = NULL, *mac_str = NULL, *rem = NULL;
|
||||
|
||||
/* Transport should be 'tuntap': ethX=tuntap,mac,dev_name */
|
||||
|
||||
if (strncmp(init, TRANSPORT_TUNTAP_NAME, len))
|
||||
return 0;
|
||||
|
||||
if (*(init += strlen(TRANSPORT_TUNTAP_NAME)) == ',') {
|
||||
if ((rem=split_if_spec(init+1, &mac_str, &dev_name)) != NULL) {
|
||||
printk("Extra garbage on specification : '%s'\n", rem);
|
||||
return 0;
|
||||
}
|
||||
} else if (*init != '\0') {
|
||||
printk("Invalid argument: %s. Skipping device!\n", init);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (dev_name) {
|
||||
strncpy(lp->tp.info.tuntap.dev_name, dev_name,
|
||||
sizeof lp->tp.info.tuntap.dev_name);
|
||||
lp->tp.info.tuntap.fixed_config = 1;
|
||||
} else
|
||||
strcpy(lp->tp.info.tuntap.dev_name, TRANSPORT_TUNTAP_NAME);
|
||||
|
||||
|
||||
#if 0
|
||||
if (setup_etheraddr(mac_str, lp->mac))
|
||||
lp->have_mac = 1;
|
||||
#endif
|
||||
lp->mtu = TRANSPORT_TUNTAP_MTU;
|
||||
|
||||
//lp->info.tuntap.gate_addr = gate_addr;
|
||||
|
||||
lp->tp.info.tuntap.fd = -1;
|
||||
|
||||
lp->tp.open = tuntap_open;
|
||||
lp->tp.close = tuntap_close;
|
||||
lp->tp.read = tuntap_read;
|
||||
lp->tp.write = tuntap_write;
|
||||
lp->tp.protocol = tuntap_protocol;
|
||||
lp->tp.poll = tuntap_poll;
|
||||
|
||||
printk("TUN/TAP backend - ");
|
||||
#if 0
|
||||
if (lp->host.gate_addr != NULL)
|
||||
printk("IP = %s", lp->host.gate_addr);
|
||||
#endif
|
||||
printk("\n");
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* ================================ ISS NET ================================ */
|
||||
|
||||
static int iss_net_rx(struct net_device *dev)
|
||||
{
|
||||
struct iss_net_private *lp = dev->priv;
|
||||
int pkt_len;
|
||||
struct sk_buff *skb;
|
||||
|
||||
/* Check if there is any new data. */
|
||||
|
||||
if (lp->tp.poll(lp) == 0)
|
||||
return 0;
|
||||
|
||||
/* Try to allocate memory, if it fails, try again next round. */
|
||||
|
||||
if ((skb = dev_alloc_skb(dev->mtu + 2 + ETH_HEADER_OTHER)) == NULL) {
|
||||
lp->stats.rx_dropped++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
skb_reserve(skb, 2);
|
||||
|
||||
/* Setup skb */
|
||||
|
||||
skb->dev = dev;
|
||||
skb->mac.raw = skb->data;
|
||||
pkt_len = lp->tp.read(lp, &skb);
|
||||
skb_put(skb, pkt_len);
|
||||
|
||||
if (pkt_len > 0) {
|
||||
skb_trim(skb, pkt_len);
|
||||
skb->protocol = lp->tp.protocol(skb);
|
||||
// netif_rx(skb);
|
||||
netif_rx_ni(skb);
|
||||
|
||||
lp->stats.rx_bytes += skb->len;
|
||||
lp->stats.rx_packets++;
|
||||
return pkt_len;
|
||||
}
|
||||
kfree_skb(skb);
|
||||
return pkt_len;
|
||||
}
|
||||
|
||||
static int iss_net_poll(void)
|
||||
{
|
||||
struct list_head *ele;
|
||||
int err, ret = 0;
|
||||
|
||||
spin_lock(&opened_lock);
|
||||
|
||||
list_for_each(ele, &opened) {
|
||||
struct iss_net_private *lp;
|
||||
|
||||
lp = list_entry(ele, struct iss_net_private, opened_list);
|
||||
|
||||
if (!netif_running(lp->dev))
|
||||
break;
|
||||
|
||||
spin_lock(&lp->lock);
|
||||
|
||||
while ((err = iss_net_rx(lp->dev)) > 0)
|
||||
ret++;
|
||||
|
||||
spin_unlock(&lp->lock);
|
||||
|
||||
if (err < 0) {
|
||||
printk(KERN_ERR "Device '%s' read returned %d, "
|
||||
"shutting it down\n", lp->dev->name, err);
|
||||
dev_close(lp->dev);
|
||||
} else {
|
||||
// FIXME reactivate_fd(lp->fd, ISS_ETH_IRQ);
|
||||
}
|
||||
}
|
||||
|
||||
spin_unlock(&opened_lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
static void iss_net_timer(unsigned long priv)
|
||||
{
|
||||
struct iss_net_private* lp = (struct iss_net_private*) priv;
|
||||
|
||||
spin_lock(&lp->lock);
|
||||
|
||||
iss_net_poll();
|
||||
|
||||
mod_timer(&lp->timer, jiffies + lp->timer_val);
|
||||
|
||||
spin_unlock(&lp->lock);
|
||||
}
|
||||
|
||||
|
||||
static int iss_net_open(struct net_device *dev)
|
||||
{
|
||||
struct iss_net_private *lp = dev->priv;
|
||||
char addr[sizeof "255.255.255.255\0"];
|
||||
int err;
|
||||
|
||||
spin_lock(&lp->lock);
|
||||
|
||||
if ((err = lp->tp.open(lp)) < 0)
|
||||
goto out;
|
||||
|
||||
if (!lp->have_mac) {
|
||||
dev_ip_addr(dev, addr, &lp->mac[2]);
|
||||
set_ether_mac(dev, lp->mac);
|
||||
}
|
||||
|
||||
netif_start_queue(dev);
|
||||
|
||||
/* clear buffer - it can happen that the host side of the interface
|
||||
* is full when we gethere. In this case, new data is never queued,
|
||||
* SIGIOs never arrive, and the net never works.
|
||||
*/
|
||||
while ((err = iss_net_rx(dev)) > 0)
|
||||
;
|
||||
|
||||
spin_lock(&opened_lock);
|
||||
list_add(&lp->opened_list, &opened);
|
||||
spin_unlock(&opened_lock);
|
||||
|
||||
init_timer(&lp->timer);
|
||||
lp->timer_val = ISS_NET_TIMER_VALUE;
|
||||
lp->timer.data = (unsigned long) lp;
|
||||
lp->timer.function = iss_net_timer;
|
||||
mod_timer(&lp->timer, jiffies + lp->timer_val);
|
||||
|
||||
out:
|
||||
spin_unlock(&lp->lock);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int iss_net_close(struct net_device *dev)
|
||||
{
|
||||
struct iss_net_private *lp = dev->priv;
|
||||
printk("iss_net_close!\n");
|
||||
netif_stop_queue(dev);
|
||||
spin_lock(&lp->lock);
|
||||
|
||||
spin_lock(&opened_lock);
|
||||
list_del(&opened);
|
||||
spin_unlock(&opened_lock);
|
||||
|
||||
del_timer_sync(&lp->timer);
|
||||
|
||||
lp->tp.close(lp);
|
||||
|
||||
spin_unlock(&lp->lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int iss_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
{
|
||||
struct iss_net_private *lp = dev->priv;
|
||||
unsigned long flags;
|
||||
int len;
|
||||
|
||||
netif_stop_queue(dev);
|
||||
spin_lock_irqsave(&lp->lock, flags);
|
||||
|
||||
len = lp->tp.write(lp, &skb);
|
||||
|
||||
if (len == skb->len) {
|
||||
lp->stats.tx_packets++;
|
||||
lp->stats.tx_bytes += skb->len;
|
||||
dev->trans_start = jiffies;
|
||||
netif_start_queue(dev);
|
||||
|
||||
/* this is normally done in the interrupt when tx finishes */
|
||||
netif_wake_queue(dev);
|
||||
|
||||
} else if (len == 0) {
|
||||
netif_start_queue(dev);
|
||||
lp->stats.tx_dropped++;
|
||||
|
||||
} else {
|
||||
netif_start_queue(dev);
|
||||
printk(KERN_ERR "iss_net_start_xmit: failed(%d)\n", len);
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&lp->lock, flags);
|
||||
|
||||
dev_kfree_skb(skb);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static struct net_device_stats *iss_net_get_stats(struct net_device *dev)
|
||||
{
|
||||
struct iss_net_private *lp = dev->priv;
|
||||
return &lp->stats;
|
||||
}
|
||||
|
||||
static void iss_net_set_multicast_list(struct net_device *dev)
|
||||
{
|
||||
#if 0
|
||||
if (dev->flags & IFF_PROMISC)
|
||||
return;
|
||||
else if (dev->mc_count)
|
||||
dev->flags |= IFF_ALLMULTI;
|
||||
else
|
||||
dev->flags &= ~IFF_ALLMULTI;
|
||||
#endif
|
||||
}
|
||||
|
||||
static void iss_net_tx_timeout(struct net_device *dev)
|
||||
{
|
||||
#if 0
|
||||
dev->trans_start = jiffies;
|
||||
netif_wake_queue(dev);
|
||||
#endif
|
||||
}
|
||||
|
||||
static int iss_net_set_mac(struct net_device *dev, void *addr)
|
||||
{
|
||||
#if 0
|
||||
struct iss_net_private *lp = dev->priv;
|
||||
struct sockaddr *hwaddr = addr;
|
||||
|
||||
spin_lock(&lp->lock);
|
||||
memcpy(dev->dev_addr, hwaddr->sa_data, ETH_ALEN);
|
||||
spin_unlock(&lp->lock);
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int iss_net_change_mtu(struct net_device *dev, int new_mtu)
|
||||
{
|
||||
#if 0
|
||||
struct iss_net_private *lp = dev->priv;
|
||||
int err = 0;
|
||||
|
||||
spin_lock(&lp->lock);
|
||||
|
||||
// FIXME not needed new_mtu = transport_set_mtu(new_mtu, &lp->user);
|
||||
|
||||
if (new_mtu < 0)
|
||||
err = new_mtu;
|
||||
else
|
||||
dev->mtu = new_mtu;
|
||||
|
||||
spin_unlock(&lp->lock);
|
||||
return err;
|
||||
#endif
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int iss_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
||||
{
|
||||
#if 0
|
||||
static const struct ethtool_drvinfo info = {
|
||||
.cmd = ETHTOOL_GDRVINFO,
|
||||
.driver = DRIVER_NAME,
|
||||
.version = "42",
|
||||
};
|
||||
void *useraddr;
|
||||
u32 ethcmd;
|
||||
|
||||
switch (cmd) {
|
||||
case SIOCETHTOOL:
|
||||
useraddr = ifr->ifr_data;
|
||||
if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
|
||||
return -EFAULT;
|
||||
|
||||
switch (ethcmd) {
|
||||
case ETHTOOL_GDRVINFO:
|
||||
if (copy_to_user(useraddr, &info, sizeof(info)))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
default:
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
#endif
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
void iss_net_user_timer_expire(unsigned long _conn)
|
||||
{
|
||||
}
|
||||
|
||||
|
||||
static struct device_driver iss_net_driver = {
|
||||
.name = DRIVER_NAME,
|
||||
.bus = &platform_bus_type,
|
||||
};
|
||||
|
||||
static int driver_registered;
|
||||
|
||||
static int iss_net_configure(int index, char *init)
|
||||
{
|
||||
struct net_device *dev;
|
||||
struct iss_net_private *lp;
|
||||
int err;
|
||||
|
||||
if ((dev = alloc_etherdev(sizeof *lp)) == NULL) {
|
||||
printk(KERN_ERR "eth_configure: failed to allocate device\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Initialize private element. */
|
||||
|
||||
lp = dev->priv;
|
||||
*lp = ((struct iss_net_private) {
|
||||
.device_list = LIST_HEAD_INIT(lp->device_list),
|
||||
.opened_list = LIST_HEAD_INIT(lp->opened_list),
|
||||
.lock = SPIN_LOCK_UNLOCKED,
|
||||
.dev = dev,
|
||||
.index = index,
|
||||
//.fd = -1,
|
||||
.mac = { 0xfe, 0xfd, 0x0, 0x0, 0x0, 0x0 },
|
||||
.have_mac = 0,
|
||||
});
|
||||
|
||||
/*
|
||||
* Try all transport protocols.
|
||||
* Note: more protocols can be added by adding '&& !X_init(lp, eth)'.
|
||||
*/
|
||||
|
||||
if (!tuntap_probe(lp, index, init)) {
|
||||
printk("Invalid arguments. Skipping device!\n");
|
||||
goto errout;
|
||||
}
|
||||
|
||||
printk(KERN_INFO "Netdevice %d ", index);
|
||||
if (lp->have_mac)
|
||||
printk("(%02x:%02x:%02x:%02x:%02x:%02x) ",
|
||||
lp->mac[0], lp->mac[1],
|
||||
lp->mac[2], lp->mac[3],
|
||||
lp->mac[4], lp->mac[5]);
|
||||
printk(": ");
|
||||
|
||||
/* sysfs register */
|
||||
|
||||
if (!driver_registered) {
|
||||
driver_register(&iss_net_driver);
|
||||
driver_registered = 1;
|
||||
}
|
||||
|
||||
spin_lock(&devices_lock);
|
||||
list_add(&lp->device_list, &devices);
|
||||
spin_unlock(&devices_lock);
|
||||
|
||||
lp->pdev.id = index;
|
||||
lp->pdev.name = DRIVER_NAME;
|
||||
platform_device_register(&lp->pdev);
|
||||
SET_NETDEV_DEV(dev,&lp->pdev.dev);
|
||||
|
||||
/*
|
||||
* If this name ends up conflicting with an existing registered
|
||||
* netdevice, that is OK, register_netdev{,ice}() will notice this
|
||||
* and fail.
|
||||
*/
|
||||
snprintf(dev->name, sizeof dev->name, "eth%d", index);
|
||||
|
||||
dev->mtu = lp->mtu;
|
||||
dev->open = iss_net_open;
|
||||
dev->hard_start_xmit = iss_net_start_xmit;
|
||||
dev->stop = iss_net_close;
|
||||
dev->get_stats = iss_net_get_stats;
|
||||
dev->set_multicast_list = iss_net_set_multicast_list;
|
||||
dev->tx_timeout = iss_net_tx_timeout;
|
||||
dev->set_mac_address = iss_net_set_mac;
|
||||
dev->change_mtu = iss_net_change_mtu;
|
||||
dev->do_ioctl = iss_net_ioctl;
|
||||
dev->watchdog_timeo = (HZ >> 1);
|
||||
dev->irq = -1;
|
||||
|
||||
rtnl_lock();
|
||||
err = register_netdevice(dev);
|
||||
rtnl_unlock();
|
||||
|
||||
if (err) {
|
||||
printk("Error registering net device!\n");
|
||||
/* XXX: should we call ->remove() here? */
|
||||
free_netdev(dev);
|
||||
return 1;
|
||||
}
|
||||
|
||||
init_timer(&lp->tl);
|
||||
lp->tl.function = iss_net_user_timer_expire;
|
||||
|
||||
#if 0
|
||||
if (lp->have_mac)
|
||||
set_ether_mac(dev, lp->mac);
|
||||
#endif
|
||||
return 0;
|
||||
|
||||
errout:
|
||||
// FIXME: unregister; free, etc..
|
||||
return -EIO;
|
||||
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
/* Filled in during early boot */
|
||||
|
||||
struct list_head eth_cmd_line = LIST_HEAD_INIT(eth_cmd_line);
|
||||
|
||||
struct iss_net_init {
|
||||
struct list_head list;
|
||||
char *init; /* init string */
|
||||
int index;
|
||||
};
|
||||
|
||||
/*
|
||||
* Parse the command line and look for 'ethX=...' fields, and register all
|
||||
* those fields. They will be later initialized in iss_net_init.
|
||||
*/
|
||||
|
||||
#define ERR KERN_ERR "iss_net_setup: "
|
||||
|
||||
static int iss_net_setup(char *str)
|
||||
{
|
||||
struct iss_net_private *device = NULL;
|
||||
struct iss_net_init *new;
|
||||
struct list_head *ele;
|
||||
char *end;
|
||||
int n;
|
||||
|
||||
n = simple_strtoul(str, &end, 0);
|
||||
if (end == str) {
|
||||
printk(ERR "Failed to parse '%s'\n", str);
|
||||
return 1;
|
||||
}
|
||||
if (n < 0) {
|
||||
printk(ERR "Device %d is negative\n", n);
|
||||
return 1;
|
||||
}
|
||||
if (*(str = end) != '=') {
|
||||
printk(ERR "Expected '=' after device number\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
spin_lock(&devices_lock);
|
||||
|
||||
list_for_each(ele, &devices) {
|
||||
device = list_entry(ele, struct iss_net_private, device_list);
|
||||
if (device->index == n)
|
||||
break;
|
||||
}
|
||||
|
||||
spin_unlock(&devices_lock);
|
||||
|
||||
if (device && device->index == n) {
|
||||
printk(ERR "Device %d already configured\n", n);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if ((new = alloc_bootmem(sizeof new)) == NULL) {
|
||||
printk("Alloc_bootmem failed\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
INIT_LIST_HEAD(&new->list);
|
||||
new->index = n;
|
||||
new->init = str + 1;
|
||||
|
||||
list_add_tail(&new->list, ð_cmd_line);
|
||||
return 1;
|
||||
}
|
||||
|
||||
#undef ERR
|
||||
|
||||
__setup("eth", iss_net_setup);
|
||||
|
||||
/*
|
||||
* Initialize all ISS Ethernet devices previously registered in iss_net_setup.
|
||||
*/
|
||||
|
||||
static int iss_net_init(void)
|
||||
{
|
||||
struct list_head *ele, *next;
|
||||
|
||||
/* Walk through all Ethernet devices specified in the command line. */
|
||||
|
||||
list_for_each_safe(ele, next, ð_cmd_line) {
|
||||
struct iss_net_init *eth;
|
||||
eth = list_entry(ele, struct iss_net_init, list);
|
||||
iss_net_configure(eth->index, eth->init);
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
module_init(iss_net_init);
|
||||
|
||||
|
|
@ -0,0 +1,112 @@
|
|||
/*
|
||||
*
|
||||
* arch/xtensa/platform-iss/setup.c
|
||||
*
|
||||
* Platform specific initialization.
|
||||
*
|
||||
* Authors: Chris Zankel <chris@zankel.net>
|
||||
* Joe Taylor <joe@tensilica.com>
|
||||
*
|
||||
* Copyright 2001 - 2005 Tensilica Inc.
|
||||
*
|
||||
* 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 of the License, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
*/
|
||||
#include <linux/config.h>
|
||||
#include <linux/stddef.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/reboot.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/kdev_t.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/major.h>
|
||||
#include <linux/blkdev.h>
|
||||
#include <linux/console.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/stringify.h>
|
||||
#include <linux/notifier.h>
|
||||
|
||||
#include <asm/platform.h>
|
||||
#include <asm/bootparam.h>
|
||||
|
||||
|
||||
void __init platform_init(bp_tag_t* bootparam)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
void platform_halt(void)
|
||||
{
|
||||
printk (" ** Called platform_halt(), looping forever! **\n");
|
||||
while (1);
|
||||
}
|
||||
|
||||
void platform_power_off(void)
|
||||
{
|
||||
printk (" ** Called platform_power_off(), looping forever! **\n");
|
||||
while (1);
|
||||
}
|
||||
void platform_restart(void)
|
||||
{
|
||||
/* Flush and reset the mmu, simulate a processor reset, and
|
||||
* jump to the reset vector. */
|
||||
|
||||
__asm__ __volatile__("movi a2, 15\n\t"
|
||||
"wsr a2, " __stringify(ICOUNTLEVEL) "\n\t"
|
||||
"movi a2, 0\n\t"
|
||||
"wsr a2, " __stringify(ICOUNT) "\n\t"
|
||||
"wsr a2, " __stringify(IBREAKENABLE) "\n\t"
|
||||
"wsr a2, " __stringify(LCOUNT) "\n\t"
|
||||
"movi a2, 0x1f\n\t"
|
||||
"wsr a2, " __stringify(PS) "\n\t"
|
||||
"isync\n\t"
|
||||
"jx %0\n\t"
|
||||
:
|
||||
: "a" (XCHAL_RESET_VECTOR_VADDR)
|
||||
: "a2");
|
||||
|
||||
/* control never gets here */
|
||||
}
|
||||
|
||||
extern void iss_net_poll(void);
|
||||
|
||||
const char twirl[]="|/-\\|/-\\";
|
||||
|
||||
void platform_heartbeat(void)
|
||||
{
|
||||
#if 0
|
||||
static int i = 0, j = 0;
|
||||
|
||||
if (--i < 0) {
|
||||
i = 99;
|
||||
printk("\r%c\r", twirl[j++]);
|
||||
if (j == 8)
|
||||
j = 0;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
|
||||
static int
|
||||
iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
|
||||
{
|
||||
__asm__ __volatile__("movi a2, -1; simcall\n");
|
||||
return NOTIFY_DONE;
|
||||
}
|
||||
|
||||
static struct notifier_block iss_panic_block = {
|
||||
iss_panic_event,
|
||||
NULL,
|
||||
0
|
||||
};
|
||||
|
||||
void __init platform_setup(char **p_cmdline)
|
||||
{
|
||||
notifier_chain_register(&panic_notifier_list, &iss_panic_block);
|
||||
}
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
/*
|
||||
* include/asm-xtensa/platform-iss/hardware.h
|
||||
*
|
||||
* This file is subject to the terms and conditions of the GNU General Public
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (C) 2001 Tensilica Inc.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file contains the default configuration of ISS.
|
||||
*/
|
||||
|
||||
#ifndef __ASM_XTENSA_ISS_HARDWARE
|
||||
#define __ASM_XTENSA_ISS_HARDWARE
|
||||
|
||||
/*
|
||||
* Memory configuration.
|
||||
*/
|
||||
|
||||
#define PLATFORM_DEFAULT_MEM_START XSHAL_RAM_PADDR
|
||||
#define PLATFORM_DEFAULT_MEM_SIZE XSHAL_RAM_VSIZE
|
||||
|
||||
/*
|
||||
* Interrupt configuration.
|
||||
*/
|
||||
|
||||
#endif /* __ASM_XTENSA_ISS_HARDWARE */
|
||||
|
|
@ -0,0 +1,92 @@
|
|||
/*
|
||||
* include/asm-xtensa/platform.h
|
||||
*
|
||||
* Platform specific functions
|
||||
*
|
||||
* This file is subject to the terms and conditions of the GNU General
|
||||
* Public License. See the file "COPYING" in the main directory of
|
||||
* this archive for more details.
|
||||
*
|
||||
* Copyright (C) 2001 - 2005 Tensilica Inc.
|
||||
*/
|
||||
|
||||
#ifndef _XTENSA_PLATFORM_H
|
||||
#define _XTENSA_PLATFORM_H
|
||||
|
||||
#include <linux/config.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/pci.h>
|
||||
|
||||
#include <asm/bootparam.h>
|
||||
|
||||
/*
|
||||
* platform_init is called before the mmu is initialized to give the
|
||||
* platform a early hook-up. bp_tag_t is a list of configuration tags
|
||||
* passed from the boot-loader.
|
||||
*/
|
||||
extern void platform_init(bp_tag_t*);
|
||||
|
||||
/*
|
||||
* platform_setup is called from setup_arch with a pointer to the command-line
|
||||
* string.
|
||||
*/
|
||||
extern void platform_setup (char **);
|
||||
|
||||
/*
|
||||
* platform_init_irq is called from init_IRQ.
|
||||
*/
|
||||
extern void platform_init_irq (void);
|
||||
|
||||
/*
|
||||
* platform_restart is called to restart the system.
|
||||
*/
|
||||
extern void platform_restart (void);
|
||||
|
||||
/*
|
||||
* platform_halt is called to stop the system and halt.
|
||||
*/
|
||||
extern void platform_halt (void);
|
||||
|
||||
/*
|
||||
* platform_power_off is called to stop the system and power it off.
|
||||
*/
|
||||
extern void platform_power_off (void);
|
||||
|
||||
/*
|
||||
* platform_idle is called from the idle function.
|
||||
*/
|
||||
extern void platform_idle (void);
|
||||
|
||||
/*
|
||||
* platform_heartbeat is called every HZ
|
||||
*/
|
||||
extern void platform_heartbeat (void);
|
||||
|
||||
/*
|
||||
* platform_pcibios_init is called to allow the platform to setup the pci bus.
|
||||
*/
|
||||
extern void platform_pcibios_init (void);
|
||||
|
||||
/*
|
||||
* platform_pcibios_fixup allows to modify the PCI configuration.
|
||||
*/
|
||||
extern int platform_pcibios_fixup (void);
|
||||
|
||||
/*
|
||||
* platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE)
|
||||
*/
|
||||
extern void platform_calibrate_ccount (void);
|
||||
|
||||
/*
|
||||
* platform_get_rtc_time returns RTC seconds (returns 0 for no error)
|
||||
*/
|
||||
extern int platform_get_rtc_time(time_t*);
|
||||
|
||||
/*
|
||||
* platform_set_rtc_time set RTC seconds (returns 0 for no error)
|
||||
*/
|
||||
extern int platform_set_rtc_time(time_t);
|
||||
|
||||
|
||||
#endif /* _XTENSA_PLATFORM_H */
|
||||
|
||||
Loading…
Reference in New Issue