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Diffstat (limited to 'src/soc/intel/apollolake/itss.c')
-rw-r--r--src/soc/intel/apollolake/itss.c120
1 files changed, 0 insertions, 120 deletions
diff --git a/src/soc/intel/apollolake/itss.c b/src/soc/intel/apollolake/itss.c
deleted file mode 100644
index 17b197547f..0000000000
--- a/src/soc/intel/apollolake/itss.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright 2016 Google Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that 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.
- */
-
-#include <commonlib/helpers.h>
-#include <console/console.h>
-#include <intelblocks/pcr.h>
-#include <stdint.h>
-#include <soc/itss.h>
-#include <soc/pcr_ids.h>
-
-#define ITSS_MAX_IRQ 119
-#define IRQS_PER_IPC 32
-#define NUM_IPC_REGS ((ITSS_MAX_IRQ + IRQS_PER_IPC - 1)/IRQS_PER_IPC)
-#define PCR_IPC0_CONF 0x3200
-
-void itss_set_irq_polarity(int irq, int active_low)
-{
- uint32_t mask;
- uint16_t reg;
- const uint16_t port = PID_ITSS;
-
- if (irq < 0 || irq > ITSS_MAX_IRQ)
- return;
-
- reg = PCR_IPC0_CONF + sizeof(uint32_t) * (irq / IRQS_PER_IPC);
- mask = 1 << (irq % IRQS_PER_IPC);
-
- pcr_rmw32(port, reg, ~mask, (active_low ? mask : 0));
-}
-
-static uint32_t irq_snapshot[NUM_IPC_REGS];
-
-void itss_snapshot_irq_polarities(int start, int end)
-{
- int i;
- int reg_start;
- int reg_end;
- const uint16_t port = PID_ITSS;
-
- if (start < 0 || start > ITSS_MAX_IRQ ||
- end < 0 || end > ITSS_MAX_IRQ || end < start)
- return;
-
- reg_start = start / IRQS_PER_IPC;
- reg_end = (end + IRQS_PER_IPC - 1) / IRQS_PER_IPC;
-
- for (i = reg_start; i < reg_end; i++) {
- uint16_t reg = PCR_IPC0_CONF + sizeof(uint32_t) * i;
- irq_snapshot[i] = pcr_read32(port, reg);
- }
-}
-
-static void show_irq_polarities(const char *msg)
-{
- int i;
- const uint16_t port = PID_ITSS;
-
- printk(BIOS_INFO, "ITSS IRQ Polarities %s:\n", msg);
- for (i = 0; i < NUM_IPC_REGS; i++) {
- uint16_t reg = PCR_IPC0_CONF + sizeof(uint32_t) * i;
- printk(BIOS_INFO, "IPC%d: 0x%08x\n", i, pcr_read32(port, reg));
- }
-}
-
-void itss_restore_irq_polarities(int start, int end)
-{
- int i;
- int reg_start;
- int reg_end;
- const uint16_t port = PID_ITSS;
-
- if (start < 0 || start > ITSS_MAX_IRQ ||
- end < 0 || end > ITSS_MAX_IRQ || end < start)
- return;
-
- show_irq_polarities("Before");
-
- reg_start = start / IRQS_PER_IPC;
- reg_end = (end + IRQS_PER_IPC - 1) / IRQS_PER_IPC;
-
- for (i = reg_start; i < reg_end; i++) {
- uint32_t mask;
- uint16_t reg;
- int irq_start;
- int irq_end;
-
- irq_start = i * IRQS_PER_IPC;
- irq_end = MIN(irq_start + IRQS_PER_IPC - 1, ITSS_MAX_IRQ);
-
- if (start > irq_end)
- continue;
- if (end < irq_start)
- break;
-
- /* Track bits within the bounds of of the register. */
- irq_start = MAX(start, irq_start) % IRQS_PER_IPC;
- irq_end = MIN(end, irq_end) % IRQS_PER_IPC;
-
- /* Create bitmask of the inclusive range of start and end. */
- mask = (((1U << irq_end) - 1) | (1U << irq_end));
- mask &= ~((1U << irq_start) - 1);
-
- reg = PCR_IPC0_CONF + sizeof(uint32_t) * i;
- pcr_rmw32(port, reg, ~mask, (mask & irq_snapshot[i]));
- }
-
- show_irq_polarities("After");
-}