diff options
author | David Kershner <david.kershner@unisys.com> | 2016-09-19 21:09:21 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-20 11:26:20 (GMT) |
commit | 511474a5077b088f92166a7875af5e6fa428e465 (patch) | |
tree | 30020dc1fad9cbafaea6e9c951a75de87926e8bb /drivers | |
parent | 3d8394c86f1b482ec2509e5a152484a27cc6cc74 (diff) | |
download | linux-511474a5077b088f92166a7875af5e6fa428e465.tar.xz |
staging: unisys: visorbus: move handle_command
Handle_command gets moved lower in the file to avoid the need for
extraneous function prototypes.
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Reviewed-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/staging/unisys/visorbus/visorchipset.c | 230 |
1 files changed, 115 insertions, 115 deletions
diff --git a/drivers/staging/unisys/visorbus/visorchipset.c b/drivers/staging/unisys/visorbus/visorchipset.c index 7cb7c00..168d42f 100644 --- a/drivers/staging/unisys/visorbus/visorchipset.c +++ b/drivers/staging/unisys/visorbus/visorchipset.c @@ -1609,121 +1609,6 @@ parahotplug_process_message(struct controlvm_message *inmsg) } } -/** - * handle_command() - process a controlvm message - * @inmsg: the message to process - * @channel_addr: address of the controlvm channel - * - * Return: - * false - this function will return false only in the case where the - * controlvm message was NOT processed, but processing must be - * retried before reading the next controlvm message; a - * scenario where this can occur is when we need to throttle - * the allocation of memory in which to copy out controlvm - * payload data - * true - processing of the controlvm message completed, - * either successfully or with an error - */ -static bool -handle_command(struct controlvm_message inmsg, u64 channel_addr) -{ - struct controlvm_message_packet *cmd = &inmsg.cmd; - u64 parm_addr; - u32 parm_bytes; - struct parser_context *parser_ctx = NULL; - bool local_addr; - struct controlvm_message ackmsg; - - /* create parsing context if necessary */ - local_addr = (inmsg.hdr.flags.test_message == 1); - if (channel_addr == 0) - return true; - parm_addr = channel_addr + inmsg.hdr.payload_vm_offset; - parm_bytes = inmsg.hdr.payload_bytes; - - /* - * Parameter and channel addresses within test messages actually lie - * within our OS-controlled memory. We need to know that, because it - * makes a difference in how we compute the virtual address. - */ - if (parm_addr && parm_bytes) { - bool retry = false; - - parser_ctx = - parser_init_byte_stream(parm_addr, parm_bytes, - local_addr, &retry); - if (!parser_ctx && retry) - return false; - } - - if (!local_addr) { - controlvm_init_response(&ackmsg, &inmsg.hdr, - CONTROLVM_RESP_SUCCESS); - if (controlvm_channel) - visorchannel_signalinsert(controlvm_channel, - CONTROLVM_QUEUE_ACK, - &ackmsg); - } - switch (inmsg.hdr.id) { - case CONTROLVM_CHIPSET_INIT: - chipset_init(&inmsg); - break; - case CONTROLVM_BUS_CREATE: - bus_create(&inmsg); - break; - case CONTROLVM_BUS_DESTROY: - bus_destroy(&inmsg); - break; - case CONTROLVM_BUS_CONFIGURE: - bus_configure(&inmsg, parser_ctx); - break; - case CONTROLVM_DEVICE_CREATE: - my_device_create(&inmsg); - break; - case CONTROLVM_DEVICE_CHANGESTATE: - if (cmd->device_change_state.flags.phys_device) { - parahotplug_process_message(&inmsg); - } else { - /* - * save the hdr and cmd structures for later use - * when sending back the response to Command - */ - my_device_changestate(&inmsg); - break; - } - break; - case CONTROLVM_DEVICE_DESTROY: - my_device_destroy(&inmsg); - break; - case CONTROLVM_DEVICE_CONFIGURE: - /* no op for now, just send a respond that we passed */ - if (inmsg.hdr.flags.response_expected) - controlvm_respond(&inmsg.hdr, CONTROLVM_RESP_SUCCESS); - break; - case CONTROLVM_CHIPSET_READY: - chipset_ready(&inmsg.hdr); - break; - case CONTROLVM_CHIPSET_SELFTEST: - chipset_selftest(&inmsg.hdr); - break; - case CONTROLVM_CHIPSET_STOP: - chipset_notready(&inmsg.hdr); - break; - default: - if (inmsg.hdr.flags.response_expected) - controlvm_respond - (&inmsg.hdr, - -CONTROLVM_RESP_ERROR_MESSAGE_ID_UNKNOWN); - break; - } - - if (parser_ctx) { - parser_done(parser_ctx); - parser_ctx = NULL; - } - return true; -} - static inline unsigned int issue_vmcall_io_controlvm_addr(u64 *control_addr, u32 *control_bytes) { @@ -2091,6 +1976,121 @@ visorchipset_file_cleanup(dev_t major_dev) unregister_chrdev_region(major_dev, 1); } +/** + * handle_command() - process a controlvm message + * @inmsg: the message to process + * @channel_addr: address of the controlvm channel + * + * Return: + * false - this function will return false only in the case where the + * controlvm message was NOT processed, but processing must be + * retried before reading the next controlvm message; a + * scenario where this can occur is when we need to throttle + * the allocation of memory in which to copy out controlvm + * payload data + * true - processing of the controlvm message completed, + * either successfully or with an error + */ +static bool +handle_command(struct controlvm_message inmsg, u64 channel_addr) +{ + struct controlvm_message_packet *cmd = &inmsg.cmd; + u64 parm_addr; + u32 parm_bytes; + struct parser_context *parser_ctx = NULL; + bool local_addr; + struct controlvm_message ackmsg; + + /* create parsing context if necessary */ + local_addr = (inmsg.hdr.flags.test_message == 1); + if (channel_addr == 0) + return true; + parm_addr = channel_addr + inmsg.hdr.payload_vm_offset; + parm_bytes = inmsg.hdr.payload_bytes; + + /* + * Parameter and channel addresses within test messages actually lie + * within our OS-controlled memory. We need to know that, because it + * makes a difference in how we compute the virtual address. + */ + if (parm_addr && parm_bytes) { + bool retry = false; + + parser_ctx = + parser_init_byte_stream(parm_addr, parm_bytes, + local_addr, &retry); + if (!parser_ctx && retry) + return false; + } + + if (!local_addr) { + controlvm_init_response(&ackmsg, &inmsg.hdr, + CONTROLVM_RESP_SUCCESS); + if (controlvm_channel) + visorchannel_signalinsert(controlvm_channel, + CONTROLVM_QUEUE_ACK, + &ackmsg); + } + switch (inmsg.hdr.id) { + case CONTROLVM_CHIPSET_INIT: + chipset_init(&inmsg); + break; + case CONTROLVM_BUS_CREATE: + bus_create(&inmsg); + break; + case CONTROLVM_BUS_DESTROY: + bus_destroy(&inmsg); + break; + case CONTROLVM_BUS_CONFIGURE: + bus_configure(&inmsg, parser_ctx); + break; + case CONTROLVM_DEVICE_CREATE: + my_device_create(&inmsg); + break; + case CONTROLVM_DEVICE_CHANGESTATE: + if (cmd->device_change_state.flags.phys_device) { + parahotplug_process_message(&inmsg); + } else { + /* + * save the hdr and cmd structures for later use + * when sending back the response to Command + */ + my_device_changestate(&inmsg); + break; + } + break; + case CONTROLVM_DEVICE_DESTROY: + my_device_destroy(&inmsg); + break; + case CONTROLVM_DEVICE_CONFIGURE: + /* no op for now, just send a respond that we passed */ + if (inmsg.hdr.flags.response_expected) + controlvm_respond(&inmsg.hdr, CONTROLVM_RESP_SUCCESS); + break; + case CONTROLVM_CHIPSET_READY: + chipset_ready(&inmsg.hdr); + break; + case CONTROLVM_CHIPSET_SELFTEST: + chipset_selftest(&inmsg.hdr); + break; + case CONTROLVM_CHIPSET_STOP: + chipset_notready(&inmsg.hdr); + break; + default: + if (inmsg.hdr.flags.response_expected) + controlvm_respond + (&inmsg.hdr, + -CONTROLVM_RESP_ERROR_MESSAGE_ID_UNKNOWN); + break; + } + + if (parser_ctx) { + parser_done(parser_ctx); + parser_ctx = NULL; + } + return true; +} + static void controlvm_periodic_work(struct work_struct *work) { |