bsps: Move clock drivers to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

1 files changed, 178 insertions, 0 deletions

diff --git a/bsps/powerpc/qoriq/clock/clock-config.c b/bsps/powerpc/qoriq/clock/clock-config.c
new file mode 100644
index 0000000000..335b1564ab
--- /dev/null
+++ b/bsps/powerpc/qoriq/clock/clock-config.c
@@ -0,0 +1,178 @@
+/**
+ * @file
+ *
+ * @ingroup QorIQ
+ *
+ * @brief QorIQ clock configuration.
+ */
+
+/*
+ * Copyright (c) 2011, 2017 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#include <rtems/timecounter.h>
+
+#include <libcpu/powerpc-utility.h>
+
+#include <bsp.h>
+#include <bsp/qoriq.h>
+#include <bsp/irq.h>
+
+/* This is defined in dev/clock/clockimpl.h */
+static rtems_isr Clock_isr(void *arg);
+
+static struct timecounter qoriq_clock_tc;
+
+#ifdef QORIQ_IS_HYPERVISOR_GUEST
+
+#define CLOCK_DRIVER_USE_ONLY_BOOT_PROCESSOR
+
+void qoriq_decrementer_dispatch(void)
+{
+  PPC_SET_SPECIAL_PURPOSE_REGISTER(BOOKE_TSR, BOOKE_TSR_DIS);
+  Clock_isr(NULL);
+}
+
+static uint32_t qoriq_clock_get_timecount(struct timecounter *tc)
+{
+  return ppc_alternate_time_base();
+}
+
+static void qoriq_clock_initialize(void)
+{
+  uint64_t frequency = bsp_time_base_frequency;
+  uint32_t us_per_tick = rtems_configuration_get_microseconds_per_tick();
+  uint32_t interval = (uint32_t) ((frequency * us_per_tick) / 1000000);
+
+  PPC_SET_SPECIAL_PURPOSE_REGISTER(BOOKE_DECAR, interval - 1);
+  PPC_SET_SPECIAL_PURPOSE_REGISTER_BITS(
+    BOOKE_TCR,
+    BOOKE_TCR_DIE | BOOKE_TCR_ARE
+  );
+  ppc_set_decrementer_register(interval - 1);
+
+  qoriq_clock_tc.tc_get_timecount = qoriq_clock_get_timecount;
+  qoriq_clock_tc.tc_counter_mask = 0xffffffff;
+  qoriq_clock_tc.tc_frequency = qoriq_clock_frequency;
+  qoriq_clock_tc.tc_quality = RTEMS_TIMECOUNTER_QUALITY_CLOCK_DRIVER;
+  rtems_timecounter_install(&qoriq_clock_tc);
+}
+
+#else /* !QORIQ_IS_HYPERVISOR_GUEST */
+
+static volatile qoriq_pic_global_timer *const qoriq_clock =
+  #if QORIQ_CLOCK_TIMER < 4
+    &qoriq.pic.gta [QORIQ_CLOCK_TIMER];
+  #else
+    &qoriq.pic.gtb [QORIQ_CLOCK_TIMER - 4];
+  #endif
+
+static volatile qoriq_pic_global_timer *const qoriq_timecounter =
+  #if QORIQ_CLOCK_TIMECOUNTER < 4
+    &qoriq.pic.gta [QORIQ_CLOCK_TIMECOUNTER];
+  #else
+    &qoriq.pic.gtb [QORIQ_CLOCK_TIMECOUNTER - 4];
+  #endif
+
+#define CLOCK_INTERRUPT (QORIQ_IRQ_GT_BASE + QORIQ_CLOCK_TIMER)
+
+static void qoriq_clock_handler_install(void)
+{
+  rtems_status_code sc = RTEMS_SUCCESSFUL;
+
+#if defined(RTEMS_MULTIPROCESSING) && !defined(RTEMS_SMP)
+  {
+    Processor_mask affinity;
+
+    _Processor_mask_From_index(&affinity, ppc_processor_id());
+    bsp_interrupt_set_affinity(CLOCK_INTERRUPT, &affinity);
+  }
+#endif
+
+  sc = qoriq_pic_set_priority(
+    CLOCK_INTERRUPT,
+    QORIQ_PIC_PRIORITY_LOWEST,
+    NULL
+  );
+  if (sc != RTEMS_SUCCESSFUL) {
+    rtems_fatal_error_occurred(0xdeadbeef);
+  }
+
+  sc = rtems_interrupt_handler_install(
+    CLOCK_INTERRUPT,
+    "Clock",
+    RTEMS_INTERRUPT_UNIQUE,
+    Clock_isr,
+    NULL
+  );
+  if (sc != RTEMS_SUCCESSFUL) {
+    rtems_fatal_error_occurred(0xdeadbeef);
+  }
+}
+
+static uint32_t qoriq_clock_get_timecount(struct timecounter *tc)
+{
+  uint32_t ccr = qoriq_timecounter->ccr;
+
+  return GTCCR_COUNT_GET(-ccr);
+}
+
+static void qoriq_clock_initialize(void)
+{
+  uint32_t timer_frequency = BSP_bus_frequency / 8;
+  uint32_t interval = (uint32_t) (((uint64_t) timer_frequency
+    * (uint64_t) rtems_configuration_get_microseconds_per_tick()) / 1000000);
+
+  qoriq_clock->bcr = GTBCR_COUNT(interval);
+
+  qoriq_timecounter->bcr = GTBCR_COUNT(0xffffffff);
+
+  qoriq_clock_tc.tc_get_timecount = qoriq_clock_get_timecount;
+  qoriq_clock_tc.tc_counter_mask = GTCCR_COUNT_GET(0xffffffff);
+  qoriq_clock_tc.tc_frequency = timer_frequency;
+  qoriq_clock_tc.tc_quality = RTEMS_TIMECOUNTER_QUALITY_CLOCK_DRIVER;
+  rtems_timecounter_install(&qoriq_clock_tc);
+}
+
+static void qoriq_clock_cleanup(void)
+{
+  rtems_status_code sc = RTEMS_SUCCESSFUL;
+
+  qoriq_clock->bcr = GTBCR_CI;
+
+  sc = rtems_interrupt_handler_remove(
+    CLOCK_INTERRUPT,
+    Clock_isr,
+    NULL
+  );
+  if (sc != RTEMS_SUCCESSFUL) {
+    rtems_fatal_error_occurred(0xdeadbeef);
+  }
+}
+
+#define Clock_driver_support_install_isr(clock_isr) \
+  qoriq_clock_handler_install()
+
+#define Clock_driver_support_set_interrupt_affinity(online_processors) \
+  bsp_interrupt_set_affinity(CLOCK_INTERRUPT, online_processors)
+
+#define Clock_driver_support_shutdown_hardware() \
+  qoriq_clock_cleanup()
+
+#endif /* QORIQ_IS_HYPERVISOR_GUEST */
+
+#define Clock_driver_support_initialize_hardware() \
+  qoriq_clock_initialize()
+
+/* Include shared source clock driver code */
+#include "../../../shared/dev/clock/clockimpl.h"