move PCI-specific code to pci.c (#219)

It's still pretty entangled, but move the bulk of the non-cap PCI code over to
pci.c.

Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Thanos Makatos <thanos.makatos@nutanix.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/lib/pci.h b/lib/pci.h
new file mode 100644
index 0000000..8678902
--- /dev/null
+++ b/lib/pci.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2019 Nutanix Inc. All rights reserved.
+ *
+ * Authors: Thanos Makatos <thanos@nutanix.com>
+ *          Swapnil Ingle <swapnil.ingle@nutanix.com>
+ *          Felipe Franciosi <felipe@nutanix.com>
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *      * Redistributions of source code must retain the above copyright
+ *        notice, this list of conditions and the following disclaimer.
+ *      * 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.
+ *      * Neither the name of Nutanix 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 <COPYRIGHT HOLDER> 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 LIB_VFIO_USER_PCI_H
+#define LIB_VFIO_USER_PCI_H
+
+#include "libvfio-user.h"
+#include "private.h"
+
+static inline bool
+pci_is_hdr_access(uint64_t pos)
+{
+    const uint64_t off = region_to_offset(VFU_PCI_DEV_CFG_REGION_IDX);
+    return pos >= off && pos - off < PCI_STD_HEADER_SIZEOF;
+}
+
+int
+pci_hdr_access(vfu_ctx_t *vfu_ctx, uint32_t *count,
+               uint64_t *pos, bool is_write, char *buf);
+
+ssize_t
+pci_config_space_access(vfu_ctx_t *vfu_ctx, char *buf, size_t count,
+                        loff_t pos, bool is_write);
+
+#endif /* LIB_VFIO_USER_PCI_H */
+
+/* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */