linux-kernel - [PATCH v3 1/3] bcm-vk: add bcm

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Message-Id: <20200825194400.28960-2-scott.branden@broadcom.com>
Date:   Tue, 25 Aug 2020 12:43:58 -0700
From:   Scott Branden <scott.branden@...adcom.com>
To:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Scott Branden <scott.branden@...adcom.com>
Cc:     Kees Cook <keescook@...omium.org>, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com
Subject: [PATCH v3 1/3] bcm-vk: add bcm_vk UAPI

Add user space api for bcm-vk driver.

Signed-off-by: Scott Branden <scott.branden@...adcom.com>
---
 include/uapi/linux/misc/bcm_vk.h | 99 ++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 include/uapi/linux/misc/bcm_vk.h

diff --git a/include/uapi/linux/misc/bcm_vk.h b/include/uapi/linux/misc/bcm_vk.h
new file mode 100644
index 000000000000..da7848e7c438
--- /dev/null
+++ b/include/uapi/linux/misc/bcm_vk.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
+/*
+ * Copyright 2018-2020 Broadcom.
+ */
+
+#ifndef __UAPI_LINUX_MISC_BCM_VK_H
+#define __UAPI_LINUX_MISC_BCM_VK_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#define BCM_VK_MAX_FILENAME 64
+
+struct vk_image {
+	__u32 type; /* Type of image */
+#define VK_IMAGE_TYPE_BOOT1 1 /* 1st stage (load to SRAM) */
+#define VK_IMAGE_TYPE_BOOT2 2 /* 2nd stage (load to DDR) */
+	char filename[BCM_VK_MAX_FILENAME]; /* Filename of image */
+};
+
+struct vk_reset {
+	__u32 arg1;
+	__u32 arg2;
+};
+
+#define VK_MAGIC		0x5e
+
+/* Load image to Valkyrie */
+#define VK_IOCTL_LOAD_IMAGE	_IOW(VK_MAGIC, 0x2, struct vk_image)
+
+/* Send Reset to Valkyrie */
+#define VK_IOCTL_RESET		_IOW(VK_MAGIC, 0x4, struct vk_reset)
+
+/*
+ * message block - basic unit in the message where a message's size is always
+ *		   N x sizeof(basic_block)
+ */
+struct vk_msg_blk {
+	__u8 function_id;
+#define VK_FID_TRANS_BUF	5
+#define VK_FID_SHUTDOWN		8
+	__u8 size;
+	__u16 trans_id; /* transport id, queue & msg_id */
+	__u32 context_id;
+	__u32 args[2];
+#define VK_CMD_PLANES_MASK	0x000f /* number of planes to up/download */
+#define VK_CMD_UPLOAD		0x0400 /* memory transfer to vk */
+#define VK_CMD_DOWNLOAD		0x0500 /* memory transfer from vk */
+#define VK_CMD_MASK		0x0f00 /* command mask */
+};
+
+#define VK_BAR_FWSTS			0x41c
+#define VK_BAR_COP_FWSTS		0x428
+/* VK_FWSTS definitions */
+#define VK_FWSTS_RELOCATION_ENTRY	(1ULL << 0)
+#define VK_FWSTS_RELOCATION_EXIT	(1ULL << 1)
+#define VK_FWSTS_INIT_START		(1ULL << 2)
+#define VK_FWSTS_ARCH_INIT_DONE		(1ULL << 3)
+#define VK_FWSTS_PRE_KNL1_INIT_DONE	(1ULL << 4)
+#define VK_FWSTS_PRE_KNL2_INIT_DONE	(1ULL << 5)
+#define VK_FWSTS_POST_KNL_INIT_DONE	(1ULL << 6)
+#define VK_FWSTS_INIT_DONE		(1ULL << 7)
+#define VK_FWSTS_APP_INIT_START		(1ULL << 8)
+#define VK_FWSTS_APP_INIT_DONE		(1ULL << 9)
+#define VK_FWSTS_MASK			0xffffffff
+#define VK_FWSTS_READY			(VK_FWSTS_INIT_START | \
+					 VK_FWSTS_ARCH_INIT_DONE | \
+					 VK_FWSTS_PRE_KNL1_INIT_DONE | \
+					 VK_FWSTS_PRE_KNL2_INIT_DONE | \
+					 VK_FWSTS_POST_KNL_INIT_DONE | \
+					 VK_FWSTS_INIT_DONE | \
+					 VK_FWSTS_APP_INIT_START | \
+					 VK_FWSTS_APP_INIT_DONE)
+/* Deinit */
+#define VK_FWSTS_APP_DEINIT_START	(1ULL << 23)
+#define VK_FWSTS_APP_DEINIT_DONE	(1ULL << 24)
+#define VK_FWSTS_DRV_DEINIT_START	(1ULL << 25)
+#define VK_FWSTS_DRV_DEINIT_DONE	(1ULL << 26)
+#define VK_FWSTS_RESET_DONE		(1ULL << 27)
+#define VK_FWSTS_DEINIT_TRIGGERED	(VK_FWSTS_APP_DEINIT_START | \
+					 VK_FWSTS_APP_DEINIT_DONE  | \
+					 VK_FWSTS_DRV_DEINIT_START | \
+					 VK_FWSTS_DRV_DEINIT_DONE)
+/* Last nibble for reboot reason */
+#define VK_FWSTS_RESET_REASON_SHIFT	28
+#define VK_FWSTS_RESET_REASON_MASK	(0xf << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_SYS_PWRUP	(0x0 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_MBOX_DB		(0x1 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_M7_WDOG		(0x2 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_TEMP		(0x3 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_PCI_FLR		(0x4 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_PCI_HOT		(0x5 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_PCI_WARM		(0x6 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_PCI_COLD		(0x7 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_L1		(0x8 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_L0		(0x9 << VK_FWSTS_RESET_REASON_SHIFT)
+#define VK_FWSTS_RESET_UNKNOWN		(0xf << VK_FWSTS_RESET_REASON_SHIFT)
+
+#endif /* __UAPI_LINUX_MISC_BCM_VK_H */
-- 
2.17.1