e36a261d4b
We have nvme-subsys and nvme devices mapped together. To support multi-controller scheme to this setup, controller identifier(id) has to be managed. Earlier, cntlid(controller id) used to be always 0 because we didn't have any subsystem scheme that controller id matters. This patch introduced 'cntlid' attribute to the nvme controller instance(NvmeCtrl) and make it allocated by the nvme-subsys device mapped to the controller. If nvme-subsys is not given to the controller, then it will always be 0 as it was. Added 'ctrls' array in the nvme-subsys instance to manage attached controllers to the subsystem with a limit(32). This patch didn't take list for the controllers to make it seamless with nvme-ns device. Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com> Tested-by: Klaus Jensen <k.jensen@samsung.com> Reviewed-by: Klaus Jensen <k.jensen@samsung.com> Reviewed-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
34 lines
748 B
C
34 lines
748 B
C
/*
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* QEMU NVM Express Subsystem: nvme-subsys
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*
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* Copyright (c) 2021 Minwoo Im <minwoo.im.dev@gmail.com>
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*
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* This code is licensed under the GNU GPL v2. Refer COPYING.
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*/
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#ifndef NVME_SUBSYS_H
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#define NVME_SUBSYS_H
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#define TYPE_NVME_SUBSYS "nvme-subsys"
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#define NVME_SUBSYS(obj) \
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OBJECT_CHECK(NvmeSubsystem, (obj), TYPE_NVME_SUBSYS)
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#define NVME_SUBSYS_MAX_CTRLS 32
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typedef struct NvmeCtrl NvmeCtrl;
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typedef struct NvmeNamespace NvmeNamespace;
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typedef struct NvmeSubsystem {
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DeviceState parent_obj;
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uint8_t subnqn[256];
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NvmeCtrl *ctrls[NVME_SUBSYS_MAX_CTRLS];
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struct {
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char *nqn;
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} params;
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} NvmeSubsystem;
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int nvme_subsys_register_ctrl(NvmeCtrl *n, Error **errp);
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#endif /* NVME_SUBSYS_H */
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