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2015-03-10libqos/ahci: add ahci command helpersJohn Snow
ahci_command_set_flags: Set additional flags in the command header. ahci_command_clr_flags: Clear flags from the command header. ahci_command_set_offset: Change the IO sector from 0. ahci_command_adjust: Adjust many values simultaneously. To be used to adjust the command header if the default values/guesses were incorrect or undesirable. Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1424905602-24715-4-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> [ kwolf: Fixed conflicting prototype for ahci_command_adjust() ] Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-03-10libqos/ahci: Zero-fill AHCI headersJohn Snow
Even though it's just the reserved space, make sure they're zeroes. Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1424905602-24715-2-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-02-16libqos/ahci: Add ahci_clean_memJohn Snow
Clean up guest memory being used in ahci_clean_mem, to be called during ahci_shutdown. With all guest memory leaks removed, add an option to the allocator to throw an assertion if a leak occurs. This test adds some sanity to both the AHCI library and the allocator. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-18-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: add ahci_ioJohn Snow
ahci_io is a wrapper around ahci_guest_io that takes a pointer to host memory instead, and will create a guest memory buffer and copy the data to/from as needed and as appropriate for a read/write command, such that after a read, the guest data will be in a host buffer, and for a write, the data will be transmitted to guest memory prior to the block operation. Now that we have all the syntactic sugar functions in place for AHCI, we can convert the identify test to be very, very short. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-17-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: Add ahci_guest_ioJohn Snow
ahci_guest_io is a shorthand function that will, in one shot, execute a data command on the guest to the specified guest buffer location, in the requested amount. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-16-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: add ahci command size settersJohn Snow
Adds setters for size, prd_size and both via set_sizes. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1423158090-25580-15-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: add ahci command verifyJohn Snow
Helps to verify that a command completed successfully. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-14-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: add ahci command functionsJohn Snow
This patch adds the AHCICommand structure, and a set of functions to operate on the structure. ahci_command_create - Initialize and create a new AHCICommand in memory ahci_command_free - Destroy this object. ahci_command_set_buffer - Set where the guest memory DMA buffer is. ahci_command_commit - Write this command to the AHCI HBA. ahci_command_issue - Issue the committed command synchronously. ahci_command_issue_async - Issue the committed command asynchronously. ahci_command_wait - Wait for an asynchronous command to finish. ahci_command_slot - Get the number of the command slot we committed to. Helpers: size_to_prdtl - Calculate the required minimum PRDTL size from a buffer size. ahci_command_find - Given an ATA command mnemonic, look it up in the properties table to obtain info about the command. command_header_init - Initialize the command header with sane values. command_table_init - Initialize the command table with sane values. [Peter Maydell <peter.maydell@linaro.org> reported the following clang warning: tests/libqos/ahci.c:598:3: warning: redefinition of typedef 'AHCICommand' is a C11 feature [-Wtypedef-redefinition] } AHCICommand; I have replaced typedef struct ... AHCICommand; with struct ... ; --Stefan] Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1423158090-25580-13-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: Add ide cmd propertiesJohn Snow
Add a structure that defines some properties of various IDE commands. These will be used to simplify the interface to the libqos AHCI calls, lessening the redundancy of specifying and respecifying properties of commands to various helper functions. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1423158090-25580-12-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16qtest/ahci: add ahci_write_fisJohn Snow
Similar to ahci_set_command_header, add a helper that takes an in-memory representation of a command FIS and writes it to guest memory, handling endianness as-needed. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1423158090-25580-11-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: Add cmd response sanity check helpersJohn Snow
This patch adds a few helpers to help sanity-check the response of the AHCI device after a command. ahci_d2h_check_sanity inspects the D2H Register FIS, ahci_pio_check_sanity inspects the PIO Setup FIS, and ahci_cmd_check_sanity inspects the command header. To support the PIO sanity check, a new structure is added for the PIO Setup FIS type. Existing FIS types (H2D and D2H) have had their members renamed slightly to condense reserved members into fewer fields; and LBA fields are now represented by arrays of 8 byte chunks instead of independent variables. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-9-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: Add port_check_nonbusy helperJohn Snow
A simple helper that asserts a given port is not busy processing any commands via the TFD, Command Issue and SACT registers. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-8-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: Add ahci_port_check_interrupts helperJohn Snow
A helper that compares a given port's current interrupts and checks them against a supplied list of expected interrupt bits, and throws an error if they do not match. The helper then resets the requested interrupts on this port, and asserts that the interrupt register is now empty. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-7-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: Add ahci_port_check_error helperJohn Snow
ahci_port_check_error checks a given port's error registers and asserts that everything from the port-level view is still OK. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-6-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: Add command header helpersJohn Snow
Adds command header helper functions: -ahci_command_header_set -ahci_command_header_get, -ahci_command_destroy, and -ahci_cmd_pick These helpers help to quickly manage the command header information in the AHCI device. ahci_command_header_set and get will store or retrieve an AHCI command header, respectively. ahci_cmd_pick chooses the first available but least recently used command slot to allow us to cycle through the available command slots. ahci_command_destroy obliterates all information contained within a given slot's command header, and frees its associated command table, but not its DMA buffer! Lastly, the command table pointer fields (dba and dbau) are merged into a single 64bit value to make managing 64bit tests simpler. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1423158090-25580-5-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: Add ahci_port_clear helperJohn Snow
Add a helper that assists in clearing out potentially old error and FIS information from an AHCI port's data structures. This ensures we always start with a blank slate for interrupt and FIS receipt information. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-3-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: Add ahci_port_select helperJohn Snow
This helper identifies which port of the AHCI HBA has a device we may run tests on. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1423158090-25580-2-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16libqos/ahci: create libqos/ahci.cJohn Snow
With global state removed, code responsible for booting up, verifying, and initializing the AHCI HBA is extracted and inserted into libqos/ahci.c, which would allow for other qtests in the future to quickly grab a meaningfully initialized reference to an AHCI HBA. Even without other users, functionalizing and isolating the code assists future AHCI tests that exercise Q35 migration. For now, libqos/ahci.o will be PC-only, but can be expanded into something arch-agnostic in the future, if needed. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1421698563-6977-16-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>