eb1ef50b6b
There was a bunch of dead historical cruft floating around in the arch/xtensa tree, left over from older code versions. It's time to do a cleanup pass. This is entirely refactoring and size optimization, no behavior changes on any in-tree devices should be present. Among the more notable changes: + xtensa_context.h offered an elaborate API to deal with a stack frame and context layout that we no longer use. + xtensa_rtos.h was entirely dead code + xtensa_timer.h was a parallel abstraction layer implementing in the architecture layer what we're already doing in our timer driver. + The architecture thread structs (_callee_saved and _thread_arch) aren't used by current code, and had dead fields that were removed. Unfortunately for standards compliance and C++ compatibility it's not possible to leave an empty struct here, so they have a single byte field. + xtensa_api.h was really just some interrupt management inlines used by irq.h, so fold that code into the outer header. + Remove the stale assembly offsets. This architecture doesn't use that facility. All told, more than a thousand lines have been removed. Not bad. Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
39 lines
961 B
C
39 lines
961 B
C
/*
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* Copyright (c) 2016 Cadence Design Systems, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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#include <irq_offload.h>
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#include <arch/xtensa/arch.h>
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/*
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* Xtensa core should support software interrupt in order to allow using
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* irq_offload feature
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*/
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static irq_offload_routine_t offload_routine;
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static const void *offload_param;
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/* Called by ISR dispatcher */
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void z_irq_do_offload(const void *unused)
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{
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ARG_UNUSED(unused);
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offload_routine(offload_param);
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}
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void arch_irq_offload(irq_offload_routine_t routine, const void *parameter)
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{
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IRQ_CONNECT(CONFIG_IRQ_OFFLOAD_INTNUM, XCHAL_EXCM_LEVEL,
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z_irq_do_offload, NULL, 0);
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arch_irq_disable(CONFIG_IRQ_OFFLOAD_INTNUM);
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offload_routine = routine;
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offload_param = parameter;
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z_xt_set_intset(BIT(CONFIG_IRQ_OFFLOAD_INTNUM));
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/*
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* Enable the software interrupt, in case it is disabled, so that IRQ
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* offload is serviced.
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*/
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arch_irq_enable(CONFIG_IRQ_OFFLOAD_INTNUM);
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}
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