1 files changed, 51 insertions, 0 deletions
diff --git a/sys/include/dev/pci/resource.h b/sys/include/dev/pci/resource.h
new file mode 100644
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+++ b/sys/include/dev/pci/resource.h
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+/*
+ * Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _PCI_RESOURCE_H_
+#define _PCI_RESOURCE_H_
+
+#include <machine/bus.h>
+
+/* Enable/disable DMA (bus mastering in this case) */
+int pcir_enable_dma(struct bus_resource *brp, void *devp);
+int pcir_disable_dma(struct bus_resource *brp, void *devp);
+
+/* Set/unset bus resource semantics */
+int pcir_set_sem(struct bus_resource *brp, bus_sem_t sem);
+int pcir_clr_sem(struct bus_resource *brp, bus_sem_t sem);
+
+/* DMA buffer helpers (XXX: unused for now) */
+int pcir_dma_alloc(struct bus_resource *brp, void *res);
+int pcir_dma_free(struct bus_resource *brp, void *p);
+
+/* DMA transaction helpers (XXX: unused for now) */
+ssize_t pcir_dma_in(struct bus_resource *brp, void *p);
+ssize_t pcir_dma_out(struct bus_resource *brp, void *p);
+
+#endif  /* !_PCI_RESOURCE_H_ */