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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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c8806b6c9e
Cisco has developed a new PCI HBA interface called sNIC, which stands for SCSI NIC. This is a new storage feature supported on specialized network adapter. The new PCI function provides a uniform host interface and abstracts backend storage. [jejb: fix up checkpatch errors] Signed-off-by: Narsimhulu Musini <nmusini@cisco.com> Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/*
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* Copyright 2014 Cisco Systems, Inc. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _VNIC_DEV_H_
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#define _VNIC_DEV_H_
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#include "vnic_resource.h"
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#include "vnic_devcmd.h"
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#ifndef VNIC_PADDR_TARGET
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#define VNIC_PADDR_TARGET 0x0000000000000000ULL
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#endif
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#ifndef readq
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static inline u64 readq(void __iomem *reg)
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{
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return ((u64)readl(reg + 0x4UL) << 32) | (u64)readl(reg);
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}
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static inline void writeq(u64 val, void __iomem *reg)
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{
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writel(lower_32_bits(val), reg);
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writel(upper_32_bits(val), reg + 0x4UL);
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}
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#endif
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enum vnic_dev_intr_mode {
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VNIC_DEV_INTR_MODE_UNKNOWN,
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VNIC_DEV_INTR_MODE_INTX,
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VNIC_DEV_INTR_MODE_MSI,
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VNIC_DEV_INTR_MODE_MSIX,
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};
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struct vnic_dev_bar {
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void __iomem *vaddr;
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dma_addr_t bus_addr;
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unsigned long len;
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};
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struct vnic_dev_ring {
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void *descs;
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size_t size;
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dma_addr_t base_addr;
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size_t base_align;
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void *descs_unaligned;
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size_t size_unaligned;
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dma_addr_t base_addr_unaligned;
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unsigned int desc_size;
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unsigned int desc_count;
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unsigned int desc_avail;
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};
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struct vnic_dev;
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struct vnic_stats;
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void *svnic_dev_priv(struct vnic_dev *vdev);
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unsigned int svnic_dev_get_res_count(struct vnic_dev *vdev,
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enum vnic_res_type type);
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void __iomem *svnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
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unsigned int index);
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unsigned int svnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
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unsigned int desc_count,
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unsigned int desc_size);
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void svnic_dev_clear_desc_ring(struct vnic_dev_ring *ring);
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int svnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
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unsigned int desc_count, unsigned int desc_size);
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void svnic_dev_free_desc_ring(struct vnic_dev *vdev,
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struct vnic_dev_ring *ring);
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int svnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
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u64 *a0, u64 *a1, int wait);
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int svnic_dev_fw_info(struct vnic_dev *vdev,
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struct vnic_devcmd_fw_info **fw_info);
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int svnic_dev_spec(struct vnic_dev *vdev, unsigned int offset,
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unsigned int size, void *value);
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int svnic_dev_stats_clear(struct vnic_dev *vdev);
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int svnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats);
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int svnic_dev_notify_set(struct vnic_dev *vdev, u16 intr);
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void svnic_dev_notify_unset(struct vnic_dev *vdev);
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int svnic_dev_link_status(struct vnic_dev *vdev);
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u32 svnic_dev_link_down_cnt(struct vnic_dev *vdev);
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int svnic_dev_close(struct vnic_dev *vdev);
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int svnic_dev_enable_wait(struct vnic_dev *vdev);
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int svnic_dev_disable(struct vnic_dev *vdev);
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int svnic_dev_open(struct vnic_dev *vdev, int arg);
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int svnic_dev_open_done(struct vnic_dev *vdev, int *done);
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int svnic_dev_init(struct vnic_dev *vdev, int arg);
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struct vnic_dev *svnic_dev_alloc_discover(struct vnic_dev *vdev,
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void *priv, struct pci_dev *pdev,
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struct vnic_dev_bar *bar,
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unsigned int num_bars);
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void svnic_dev_set_intr_mode(struct vnic_dev *vdev,
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enum vnic_dev_intr_mode intr_mode);
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enum vnic_dev_intr_mode svnic_dev_get_intr_mode(struct vnic_dev *vdev);
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void svnic_dev_unregister(struct vnic_dev *vdev);
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int svnic_dev_cmd_init(struct vnic_dev *vdev, int fallback);
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#endif /* _VNIC_DEV_H_ */
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