This actually implements pre_save and post_load methods for in-kernel
vGICv3.
Signed-off-by: NPavel Fedin <p.fedin@samsung.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NVijaya Kumar K <Vijaya.Kumar@cavium.com>
Message-id: 1487850673-26455-4-git-send-email-vijay.kilari@gmail.com
[PMM:
 * use decimal, not 0bnnn
 * fixed typo in names of ICC_APR0R_EL1 and ICC_AP1R_EL1
 * completely rearranged the get and put functions to read and write
   the state in a natural order, rather than mixing distributor and
   redistributor state together]
Signed-off-by: NVijaya Kumar K <Vijaya.Kumar@cavium.com>
[Vijay:
 * Update macro KVM_VGIC_ATTR
 * Use 32 bit access for gicd and gicr
 * GICD_IROUTER, GICD_TYPER, GICR_PROPBASER and GICR_PENDBASER reg
   access  are changed from 64-bit to 32-bit access
 * Add ICC_SRE_EL1 save and restore
 * Dropped translate_fn mechanism and coded functions to handle
   save and restore of edge_trigger and priority
 * Number of APnR register saved/restored based on number of
   priority bits supported]
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>

Add defines to gicv3_internal.h for fields in the ICH_*
system registers which form the GIC virtualization control
interface.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1483977924-14522-7-git-send-email-peter.maydell@linaro.org

Cleaned up with scripts/clean-header-guards.pl.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NRichard Henderson <rth@twiddle.net>

Add the CPU interface registers which deal with acknowledging
and dismissing interrupts.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Message-id: 1465915112-29272-19-git-send-email-peter.maydell@linaro.org

Implement the registers in the GICv3 CPU interface which generate
new SGI interrupts.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Message-id: 1465915112-29272-18-git-send-email-peter.maydell@linaro.org

Implement the gicv3_cpuif_update() function which deals with correctly
asserting IRQ and FIQ based on the current running priority of the CPU,
the priority of the highest priority pending interrupt and the CPU's
current exception level and security state.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Message-id: 1465915112-29272-17-git-send-email-peter.maydell@linaro.org

Implement the CPU interface registers for the GICv3; these are
CPU system registers, not MMIO registers.

This commit implements all the registers which are simple
accessors for GIC state, but not those which act as interfaces
for acknowledging, dismissing or generating interrupts. (Those
will be added in a later commit.)
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Message-id: 1465915112-29272-16-git-send-email-peter.maydell@linaro.org

Implement the code which updates the GIC state when an interrupt
input into the GIC is asserted.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Message-id: 1465915112-29272-15-git-send-email-peter.maydell@linaro.org

Implement the redistributor registers of a GICv3.
Signed-off-by: NShlomo Pongratz <shlomo.pongratz@huawei.com>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1465915112-29272-13-git-send-email-peter.maydell@linaro.org
[PMM: significantly overhauled/rewritten:
 * use the new data structures
 * restructure register read/write to handle different width accesses
   natively, since almost all registers are 32-bit only, rather
   than implementing everything as byte accesses
 * implemented security extension support
]
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Implement the distributor registers of a GICv3.
Signed-off-by: NShlomo Pongratz <shlomo.pongratz@huawei.com>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1465915112-29272-12-git-send-email-peter.maydell@linaro.org
[PMM: significantly overhauled/rewritten:
 * use the new bitmap data structures
 * restructure register read/write to handle different width accesses
   natively, since almost all registers are 32-bit only, rather
   than implementing everything as byte accesses
 * implemented security extension support
]
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Implement the GICv3 logic to recalculate the highest priority pending
interrupt for each CPU after some part of the GIC state has changed.
We avoid unnecessary full recalculation where possible.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Message-id: 1465915112-29272-11-git-send-email-peter.maydell@linaro.org

This patch includes the device class itself, some ID register
value functions which will be needed by both distributor
and redistributor, and some skeleton functions for handling
interrupts coming in and going out, which will be filled in
in a subsequent patch.
Signed-off-by: NShlomo Pongratz <shlomo.pongratz@huawei.com>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1465915112-29272-10-git-send-email-peter.maydell@linaro.org
[PMM: pulled this patch earlier in the sequence, and left
 some code out of it for a later patch]
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>

Add state information to GICv3 object structure and implement
arm_gicv3_common_reset().

This commit includes accessor functions for the fields which are
stored as bitmaps in uint32_t arrays.
Signed-off-by: NPavel Fedin <p.fedin@samsung.com>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>
Tested-by: NShannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1465915112-29272-7-git-send-email-peter.maydell@linaro.org
[PMM: significantly overhauled:
 * Add missing qom/cpu.h include
 * Remove legacy-only state fields (we can add them later if/when we add
   legacy emulation)
 * Use arrays of uint32_t to store the various distributor bitmaps,
   and provide accessor functions for the various set/test/etc operations
 * Add various missing register offset #defines
 * Accessor macros which combine distributor and redistributor behaviour
   removed
 * Fields in state structures renamed to match architectural register names
 * Corrected the reset value for GICR_IENABLER0 since we don't support
   legacy mode
 * Added ARM_LINUX_BOOT_IF interface for "we are directly booting a kernel in
   non-secure" so that we can fake up the firmware-mandated reconfiguration
   only when we need it
]
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NShannon Zhao <shannon.zhao@linaro.org>