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-rw-r--r--drivers/bus/fsl-mc/Makefile3
-rw-r--r--drivers/bus/fsl-mc/fsl-mc-private.h39
-rw-r--r--drivers/bus/fsl-mc/obj-api.c103
-rw-r--r--drivers/vfio/fsl-mc/vfio_fsl_mc.c45
4 files changed, 170 insertions, 20 deletions
diff --git a/drivers/bus/fsl-mc/Makefile b/drivers/bus/fsl-mc/Makefile
index 4ae292a30e53..892946245527 100644
--- a/drivers/bus/fsl-mc/Makefile
+++ b/drivers/bus/fsl-mc/Makefile
@@ -15,7 +15,8 @@ mc-bus-driver-objs := fsl-mc-bus.o \
dprc-driver.o \
fsl-mc-allocator.o \
fsl-mc-msi.o \
- dpmcp.o
+ dpmcp.o \
+ obj-api.o
# MC userspace support
obj-$(CONFIG_FSL_MC_UAPI_SUPPORT) += fsl-mc-uapi.o
diff --git a/drivers/bus/fsl-mc/fsl-mc-private.h b/drivers/bus/fsl-mc/fsl-mc-private.h
index 1958fa065360..b3520ea1b9f4 100644
--- a/drivers/bus/fsl-mc/fsl-mc-private.h
+++ b/drivers/bus/fsl-mc/fsl-mc-private.h
@@ -48,7 +48,6 @@ struct dpmng_rsp_get_version {
/* DPMCP command IDs */
#define DPMCP_CMDID_CLOSE DPMCP_CMD(0x800)
-#define DPMCP_CMDID_OPEN DPMCP_CMD(0x80b)
#define DPMCP_CMDID_RESET DPMCP_CMD(0x005)
struct dpmcp_cmd_open {
@@ -91,7 +90,6 @@ int dpmcp_reset(struct fsl_mc_io *mc_io,
/* DPRC command IDs */
#define DPRC_CMDID_CLOSE DPRC_CMD(0x800)
-#define DPRC_CMDID_OPEN DPRC_CMD(0x805)
#define DPRC_CMDID_GET_API_VERSION DPRC_CMD(0xa05)
#define DPRC_CMDID_GET_ATTR DPRC_CMD(0x004)
@@ -453,7 +451,6 @@ int dprc_get_connection(struct fsl_mc_io *mc_io,
/* Command IDs */
#define DPBP_CMDID_CLOSE DPBP_CMD(0x800)
-#define DPBP_CMDID_OPEN DPBP_CMD(0x804)
#define DPBP_CMDID_ENABLE DPBP_CMD(0x002)
#define DPBP_CMDID_DISABLE DPBP_CMD(0x003)
@@ -492,7 +489,6 @@ struct dpbp_rsp_get_attributes {
/* Command IDs */
#define DPCON_CMDID_CLOSE DPCON_CMD(0x800)
-#define DPCON_CMDID_OPEN DPCON_CMD(0x808)
#define DPCON_CMDID_ENABLE DPCON_CMD(0x002)
#define DPCON_CMDID_DISABLE DPCON_CMD(0x003)
@@ -524,6 +520,41 @@ struct dpcon_cmd_set_notification {
__le64 user_ctx;
};
+/*
+ * Generic FSL MC API
+ */
+
+/* generic command versioning */
+#define OBJ_CMD_BASE_VERSION 1
+#define OBJ_CMD_ID_OFFSET 4
+
+#define OBJ_CMD(id) (((id) << OBJ_CMD_ID_OFFSET) | OBJ_CMD_BASE_VERSION)
+
+/* open command codes */
+#define DPRTC_CMDID_OPEN OBJ_CMD(0x810)
+#define DPNI_CMDID_OPEN OBJ_CMD(0x801)
+#define DPSW_CMDID_OPEN OBJ_CMD(0x802)
+#define DPIO_CMDID_OPEN OBJ_CMD(0x803)
+#define DPBP_CMDID_OPEN OBJ_CMD(0x804)
+#define DPRC_CMDID_OPEN OBJ_CMD(0x805)
+#define DPDMUX_CMDID_OPEN OBJ_CMD(0x806)
+#define DPCI_CMDID_OPEN OBJ_CMD(0x807)
+#define DPCON_CMDID_OPEN OBJ_CMD(0x808)
+#define DPSECI_CMDID_OPEN OBJ_CMD(0x809)
+#define DPAIOP_CMDID_OPEN OBJ_CMD(0x80a)
+#define DPMCP_CMDID_OPEN OBJ_CMD(0x80b)
+#define DPMAC_CMDID_OPEN OBJ_CMD(0x80c)
+#define DPDCEI_CMDID_OPEN OBJ_CMD(0x80d)
+#define DPDMAI_CMDID_OPEN OBJ_CMD(0x80e)
+#define DPDBG_CMDID_OPEN OBJ_CMD(0x80f)
+
+/* Generic object command IDs */
+#define OBJ_CMDID_CLOSE OBJ_CMD(0x800)
+#define OBJ_CMDID_RESET OBJ_CMD(0x005)
+
+struct fsl_mc_obj_cmd_open {
+ __le32 obj_id;
+};
/**
* struct fsl_mc_resource_pool - Pool of MC resources of a given
diff --git a/drivers/bus/fsl-mc/obj-api.c b/drivers/bus/fsl-mc/obj-api.c
new file mode 100644
index 000000000000..06c1dd84e38d
--- /dev/null
+++ b/drivers/bus/fsl-mc/obj-api.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2021 NXP
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+static int fsl_mc_get_open_cmd_id(const char *type)
+{
+ static const struct {
+ int cmd_id;
+ const char *type;
+ } dev_ids[] = {
+ { DPRTC_CMDID_OPEN, "dprtc" },
+ { DPRC_CMDID_OPEN, "dprc" },
+ { DPNI_CMDID_OPEN, "dpni" },
+ { DPIO_CMDID_OPEN, "dpio" },
+ { DPSW_CMDID_OPEN, "dpsw" },
+ { DPBP_CMDID_OPEN, "dpbp" },
+ { DPCON_CMDID_OPEN, "dpcon" },
+ { DPMCP_CMDID_OPEN, "dpmcp" },
+ { DPMAC_CMDID_OPEN, "dpmac" },
+ { DPSECI_CMDID_OPEN, "dpseci" },
+ { DPDMUX_CMDID_OPEN, "dpdmux" },
+ { DPDCEI_CMDID_OPEN, "dpdcei" },
+ { DPAIOP_CMDID_OPEN, "dpaiop" },
+ { DPCI_CMDID_OPEN, "dpci" },
+ { DPDMAI_CMDID_OPEN, "dpdmai" },
+ { DPDBG_CMDID_OPEN, "dpdbg" },
+ { 0, NULL }
+ };
+ int i;
+
+ for (i = 0; dev_ids[i].type; i++)
+ if (!strcmp(dev_ids[i].type, type))
+ return dev_ids[i].cmd_id;
+
+ return -1;
+}
+
+int fsl_mc_obj_open(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ int obj_id,
+ char *obj_type,
+ u16 *token)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct fsl_mc_obj_cmd_open *cmd_params;
+ int err = 0;
+ int cmd_id = fsl_mc_get_open_cmd_id(obj_type);
+
+ if (cmd_id == -1)
+ return -ENODEV;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(cmd_id, cmd_flags, 0);
+ cmd_params = (struct fsl_mc_obj_cmd_open *)cmd.params;
+ cmd_params->obj_id = cpu_to_le32(obj_id);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *token = mc_cmd_hdr_read_token(&cmd);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_obj_open);
+
+int fsl_mc_obj_close(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token)
+{
+ struct fsl_mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(OBJ_CMDID_CLOSE, cmd_flags,
+ token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_obj_close);
+
+int fsl_mc_obj_reset(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token)
+{
+ struct fsl_mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(OBJ_CMDID_RESET, cmd_flags,
+ token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_obj_reset);
diff --git a/drivers/vfio/fsl-mc/vfio_fsl_mc.c b/drivers/vfio/fsl-mc/vfio_fsl_mc.c
index 9e838fed5603..6e2e62c6f47a 100644
--- a/drivers/vfio/fsl-mc/vfio_fsl_mc.c
+++ b/drivers/vfio/fsl-mc/vfio_fsl_mc.c
@@ -65,6 +65,34 @@ static void vfio_fsl_mc_regions_cleanup(struct vfio_fsl_mc_device *vdev)
kfree(vdev->regions);
}
+static int vfio_fsl_mc_reset_device(struct vfio_fsl_mc_device *vdev)
+{
+ struct fsl_mc_device *mc_dev = vdev->mc_dev;
+ int ret = 0;
+
+ if (is_fsl_mc_bus_dprc(vdev->mc_dev)) {
+ return dprc_reset_container(mc_dev->mc_io, 0,
+ mc_dev->mc_handle,
+ mc_dev->obj_desc.id,
+ DPRC_RESET_OPTION_NON_RECURSIVE);
+ } else {
+ u16 token;
+
+ ret = fsl_mc_obj_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,
+ mc_dev->obj_desc.type,
+ &token);
+ if (ret)
+ goto out;
+ ret = fsl_mc_obj_reset(mc_dev->mc_io, 0, token);
+ if (ret) {
+ fsl_mc_obj_close(mc_dev->mc_io, 0, token);
+ goto out;
+ }
+ ret = fsl_mc_obj_close(mc_dev->mc_io, 0, token);
+ }
+out:
+ return ret;
+}
static void vfio_fsl_mc_close_device(struct vfio_device *core_vdev)
{
@@ -78,9 +106,7 @@ static void vfio_fsl_mc_close_device(struct vfio_device *core_vdev)
vfio_fsl_mc_regions_cleanup(vdev);
/* reset the device before cleaning up the interrupts */
- ret = dprc_reset_container(mc_cont->mc_io, 0, mc_cont->mc_handle,
- mc_cont->obj_desc.id,
- DPRC_RESET_OPTION_NON_RECURSIVE);
+ ret = vfio_fsl_mc_reset_device(vdev);
if (WARN_ON(ret))
dev_warn(&mc_cont->dev,
@@ -203,18 +229,7 @@ static long vfio_fsl_mc_ioctl(struct vfio_device *core_vdev,
}
case VFIO_DEVICE_RESET:
{
- int ret;
- struct fsl_mc_device *mc_dev = vdev->mc_dev;
-
- /* reset is supported only for the DPRC */
- if (!is_fsl_mc_bus_dprc(mc_dev))
- return -ENOTTY;
-
- ret = dprc_reset_container(mc_dev->mc_io, 0,
- mc_dev->mc_handle,
- mc_dev->obj_desc.id,
- DPRC_RESET_OPTION_NON_RECURSIVE);
- return ret;
+ return vfio_fsl_mc_reset_device(vdev);
}
default:
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-18 13:23:34 +0300