Apply hekate 5.2.1 and gcc 10 changes, -fno-inline

source/soc/irq.c

@@ -0,0 +1,263 @@
+/*
+ * BPMP-Lite IRQ driver for Tegra X1
+ *
+ * Copyright (c) 2019 CTCaer
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+
+#include "irq.h"
+#include "t210.h"
+#include "../gfx/gfx.h"
+#include "../mem/heap.h"
+
+//#define DPRINTF(...) gfx_printf(__VA_ARGS__)
+#define DPRINTF(...)
+
+extern void irq_disable();
+extern void irq_enable_cpu_irq_exceptions();
+extern void irq_disable_cpu_irq_exceptions();
+
+typedef struct _irq_ctxt_t
+{
+	u32  irq;
+	int  (*handler)(u32 irq, void *data);
+	void *data;
+	u32  flags;
+} irq_ctxt_t;
+
+bool irq_init_done = false;
+irq_ctxt_t irqs[IRQ_MAX_HANDLERS];
+
+static void _irq_enable_source(u32 irq)
+{
+	u32 ctrl_idx = irq >> 5;
+	u32 bit = irq % 32;
+
+	// Set as normal IRQ.
+	ICTLR(ctrl_idx, PRI_ICTLR_COP_IEP_CLASS) &= ~(1 << bit);
+
+	// Enable IRQ source.
+	ICTLR(ctrl_idx, PRI_ICTLR_COP_IER_SET) = 1 << bit;
+}
+
+static void _irq_disable_source(u32 irq)
+{
+	u32 ctrl_idx = irq >> 5;
+	u32 bit = irq % 32;
+
+	// Disable IRQ source.
+	ICTLR(ctrl_idx, PRI_ICTLR_COP_IER_CLR) = 1 << bit;
+}
+
+static void _irq_disable_and_ack_all()
+{
+	// Disable and ack all IRQ sources.
+	for (u32 ctrl_idx = 0; ctrl_idx < 6; ctrl_idx++)
+	{
+		u32 enabled_irqs = ICTLR(ctrl_idx, PRI_ICTLR_COP_IER);
+		ICTLR(ctrl_idx, PRI_ICTLR_COP_IER_CLR) = enabled_irqs;
+		ICTLR(ctrl_idx, PRI_ICTLR_FIR_CLR) = enabled_irqs;
+	}
+}
+
+static void _irq_ack_source(u32 irq)
+{
+	u32 ctrl_idx = irq >> 5;
+	u32 bit = irq % 32;
+
+	// Force stop the interrupt as it's serviced here.
+	ICTLR(ctrl_idx, PRI_ICTLR_FIR_CLR) = 1 << bit;
+}
+
+void irq_free(u32 irq)
+{
+	for (u32 idx = 0; idx < IRQ_MAX_HANDLERS; idx++)
+	{
+		if (irqs[idx].irq == irq && irqs[idx].handler)
+		{
+			irqs[idx].irq = 0;
+			irqs[idx].handler = NULL;
+			irqs[idx].data = NULL;
+			irqs[idx].flags = 0;
+
+			_irq_disable_source(irq);
+		}
+	}
+}
+
+static void _irq_free_all()
+{
+	for (u32 idx = 0; idx < IRQ_MAX_HANDLERS; idx++)
+	{
+		if (irqs[idx].handler)
+		{
+			_irq_disable_source(irqs[idx].irq);
+
+			irqs[idx].irq = 0;
+			irqs[idx].handler = NULL;
+			irqs[idx].data = NULL;
+			irqs[idx].flags = 0;
+		}
+	}
+}
+
+static irq_status_t _irq_handle_source(u32 irq)
+{
+	int status = IRQ_NONE;
+
+	_irq_disable_source(irq);
+	_irq_ack_source(irq);
+
+	u32 idx;
+	for (idx = 0; idx < IRQ_MAX_HANDLERS; idx++)
+	{
+		if (irqs[idx].irq == irq)
+		{
+			status = irqs[idx].handler(irqs[idx].irq, irqs[idx].data);
+
+			if (status == IRQ_HANDLED)
+				break;
+		}
+	}
+
+	if (irqs[idx].flags & IRQ_FLAG_ONE_OFF)
+		irq_free(irq);
+	else
+		_irq_enable_source(irq);
+
+	return status;
+}
+
+void irq_handler()
+{
+	// Get IRQ source.
+	u32 irq = EXCP_VEC(EVP_COP_IRQ_STS) & 0xFF;
+
+	if (!irq_init_done)
+	{
+		_irq_ack_source(irq);
+		return;
+	}
+
+	DPRINTF("IRQ: %d\n", irq);
+
+	int err = _irq_handle_source(irq);
+
+	//TODO: disable if unhandhled.
+	if (err == IRQ_NONE)
+		gfx_printf("Unhandled IRQ: %d\n", irq);
+}
+
+static void _irq_init()
+{
+	_irq_disable_and_ack_all();
+	memset(irqs, 0, sizeof(irq_ctxt_t) * IRQ_MAX_HANDLERS);
+	irq_init_done = true;
+}
+
+void irq_end()
+{
+	_irq_free_all();
+	irq_disable_cpu_irq_exceptions();
+	irq_init_done = false;
+}
+
+void irq_wait_event(u32 irq)
+{
+	irq_disable_cpu_irq_exceptions();
+
+	_irq_enable_source(irq);
+
+	// Halt BPMP and wait for the IRQ. No need to use WAIT_EVENT + LIC_IRQ when BPMP serves the IRQ.
+	FLOW_CTLR(FLOW_CTLR_HALT_COP_EVENTS) = HALT_COP_STOP_UNTIL_IRQ;
+
+	_irq_disable_source(irq);
+	_irq_ack_source(irq);
+
+	irq_enable_cpu_irq_exceptions();
+}
+
+void irq_disable_wait_event()
+{
+	irq_enable_cpu_irq_exceptions();
+}
+
+irq_status_t irq_request(u32 irq, irq_handler_t handler, void *data, irq_flags_t flags)
+{
+	if (!irq_init_done)
+		_irq_init();
+
+	for (u32 idx = 0; idx < IRQ_MAX_HANDLERS; idx++)
+	{
+		if (irqs[idx].handler == NULL ||
+			(irqs[idx].irq == irq && irqs[idx].flags & IRQ_FLAG_REPLACEABLE))
+		{
+			DPRINTF("Registered handler, IRQ: %d, Slot: %d\n", irq, idx);
+			DPRINTF("Handler: %08p, Flags: %x\n", (u32)handler, flags);
+
+			irqs[idx].irq = irq;
+			irqs[idx].handler = handler;
+			irqs[idx].data = data;
+			irqs[idx].flags = flags;
+
+			_irq_enable_source(irq);
+
+			return IRQ_ENABLED;
+		}
+		else if (irqs[idx].irq == irq)
+			return IRQ_ALREADY_REGISTERED;
+	}
+
+	return IRQ_NO_SLOTS_AVAILABLE;
+}
+
+void __attribute__ ((target("arm"))) fiq_setup()
+{
+/*
+	asm volatile("mrs r12, cpsr\n\t"
+		"bic r12, r12, #0x1F\n\t"
+		"orr r12, r12, #0x11\n\t"
+		"msr cpsr_c, r12\n\t");
+
+	register volatile char *text asm ("r8");
+	register volatile char *uart_tx asm ("r9");
+	register int len asm ("r10");
+
+	len = 5;
+	uart_tx = (char *)0x70006040;
+	memcpy((char *)text, "FIQ\r\n", len);
+	*uart_tx = 0;
+
+	asm volatile("mrs r12, cpsr\n"
+		"orr r12, r12, #0x1F\n"
+		"msr cpsr_c, r12");
+*/
+}
+
+void  __attribute__ ((target("arm"), interrupt ("FIQ"))) fiq_handler()
+{
+/*
+	register volatile char *text asm ("r8");
+	register volatile char *uart_tx asm ("r9");
+	register int len asm ("r10");
+
+	while (len)
+	{
+		*uart_tx = *text++;
+		len--;
+	}
+*/
+}