From 20f449c7ef5cbe5eb119c48e738b6e90f6a2bcea Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Thu, 18 Sep 2025 01:41:15 -0400 Subject: kern/amd64: io: Add initial PCI CAM driver Signed-off-by: Ian Moffett --- src/sys/include/io/pci/cam.h | 63 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 src/sys/include/io/pci/cam.h (limited to 'src/sys/include/io/pci/cam.h') diff --git a/src/sys/include/io/pci/cam.h b/src/sys/include/io/pci/cam.h new file mode 100644 index 0000000..198e8df --- /dev/null +++ b/src/sys/include/io/pci/cam.h @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2025 Ian Marco Moffett and L5 engineers + * 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 the project 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_CAM_H_ +#define _PCI_CAM_H_ 1 + +#include +#include + +/* + * Configuration Access Mechanism hooks for the + * L5 PCI driver. + * + * Contains read/write hooks: + * [ + * @dp: Device pointer + * @off: Register offset + * @v[writel]: Value to write + * ] + */ +struct cam_hook { + void(*cam_writel)(struct pci_device *dp, uint32_t off, pcireg_t v); + pcireg_t(*cam_readl)(struct pci_device *dp, uint32_t off); +}; + +/* + * Initialize configuration access mechanism hooks + * to be used for PCI device access. + * + * @chp: (E)CAM hooks + * + * Returns zero on success, otherwise a less than zero + * value to indicate failure. + */ +int pci_cam_init(struct cam_hook *chp); + +#endif /* !_PCI_CAM_H_ */ -- cgit v1.2.3