Unifying External Interrupt System (#51)

[lunaix-os.git] / lunaix-os / arch / x86 / exceptions / isrm.c

diff --git a/lunaix-os/arch/x86/exceptions/isrm.c b/lunaix-os/arch/x86/exceptions/isrm.c
deleted file mode 100644 (file)
index 89ff616..0000000
--- a/lunaix-os/arch/x86/exceptions/isrm.c
+++ /dev/null
@@ -1,174 +0,0 @@
-#include <lunaix/generic/isrm.h>
-#include <lunaix/spike.h>
-#include <lunaix/owloysius.h>
-
-#include "sys/x86_isa.h"
-#include "sys/ioapic.h"
-#include "sys/apic.h"
-
-/*
-    total: 256 ivs
-    0~31: reserved for sys use (x32)
-    32~47: reserved for os use (x16)
-    48~  : free to allocate for external hardware use. (x208)
-*/
-
-static char iv_bmp[(IV_EX_END - IV_BASE_END) / 8];
-static isr_cb handlers[TOTAL_IV];
-static ptr_t ivhand_payload[TOTAL_IV];
-
-static struct x86_intc arch_intc_ctx;
-
-extern void
-intr_routine_fallback(const struct hart_state* state);
-
-void
-isrm_init()
-{
-    for (size_t i = 0; i < TOTAL_IV; i++) {
-        handlers[i] = intr_routine_fallback;
-    }
-}
-
-static inline int
-__ivalloc_within(size_t a, size_t b, isr_cb handler)
-{
-    a = (a - IV_BASE_END);
-    b = (b - IV_BASE_END);
-    u8_t j = a % 8;
-    u8_t k = 0;
-
-    for (size_t i = a / 8; i < b / 8; i++, k += 8) {
-        u8_t chunk = iv_bmp[i];
-
-        if (chunk == 0xff)
-            continue;
-
-        chunk >>= j;
-        while ((chunk & 0x1) && k <= b) {
-            chunk >>= 1;
-            j++;
-            k++;
-        }
-
-        if (k > b) {
-            break;
-        }
-
-        iv_bmp[i] |= 1 << j;
-
-        int iv = IV_BASE_END + i * 8 + j;
-        handlers[iv] = handler ? handler : intr_routine_fallback;
-
-        return iv;
-    }
-
-    return 0;
-}
-
-int
-isrm_ivosalloc(isr_cb handler)
-{
-    return __ivalloc_within(IV_BASE_END, IV_EX_BEGIN, handler);
-}
-
-int
-isrm_ivexalloc(isr_cb handler)
-{
-    return __ivalloc_within(IV_EX_BEGIN, IV_EX_END, handler);
-}
-
-void
-isrm_ivfree(int iv)
-{
-    assert(iv < 256);
-
-    if (iv >= IV_BASE_END) {
-        iv_bmp[(iv - IV_BASE_END) / 8] &= ~(1 << ((iv - IV_BASE_END) % 8));
-    }
-
-    handlers[iv] = intr_routine_fallback;
-}
-
-int
-isrm_bindirq(int irq, isr_cb irq_handler)
-{
-    int iv;
-    if (!(iv = isrm_ivexalloc(irq_handler))) {
-        fail("out of IV resource.");
-        return 0; // never reach
-    }
-
-    // fixed, edge trigged, polarity=high
-    isrm_irq_attach(irq, iv, 0, IRQ_DEFAULT);
-
-    return iv;
-}
-
-void
-isrm_bindiv(int iv, isr_cb handler)
-{
-    assert(iv < 256);
-
-    if (iv >= IV_BASE_END) {
-        iv_bmp[(iv - IV_BASE_END) / 8] |= 1 << ((iv - IV_BASE_END) % 8);
-    }
-
-    handlers[iv] = handler;
-}
-
-isr_cb
-isrm_get(int iv)
-{
-    assert(iv < 256);
-
-    return handlers[iv];
-}
-
-ptr_t
-isrm_get_payload(const struct hart_state* state)
-{
-    int iv = state->execp->vector;
-    assert(iv < 256);
-
-    return ivhand_payload[iv];
-}
-
-void
-isrm_set_payload(int iv, ptr_t payload)
-{
-    assert(iv < 256);
-
-    ivhand_payload[iv] = payload;
-}
-
-void
-isrm_irq_attach(int irq, int iv, cpu_t dest, u32_t flags)
-{
-    arch_intc_ctx.irq_attach(&arch_intc_ctx, irq, iv, dest, flags);
-}
-
-void
-isrm_notify_eoi(cpu_t id, int iv)
-{
-    arch_intc_ctx.notify_eoi(&arch_intc_ctx, id, iv);
-}
-
-void
-isrm_notify_eos(cpu_t id)
-{
-    isrm_notify_eoi(id, LUNAIX_SCHED);
-}
-
-
-static void
-__intc_init()
-{
-    apic_init();
-    ioapic_init();
-
-    arch_intc_ctx.name = "i386_apic";
-    arch_intc_ctx.irq_attach = ioapic_irq_remap;
-    arch_intc_ctx.notify_eoi = apic_on_eoi;
-}
-owloysius_fetch_init(__intc_init, on_earlyboot);
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