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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NITROX_DEV_H
#define __NITROX_DEV_H
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#define VERSION_LEN 32
struct nitrox_cmdq {
/* command queue lock */
spinlock_t cmdq_lock;
/* response list lock */
spinlock_t response_lock;
/* backlog list lock */
spinlock_t backlog_lock;
/* request submitted to chip, in progress */
struct list_head response_head;
/* hw queue full, hold in backlog list */
struct list_head backlog_head;
/* doorbell address */
u8 __iomem *dbell_csr_addr;
/* base address of the queue */
u8 *head;
struct nitrox_device *ndev;
/* flush pending backlog commands */
struct work_struct backlog_qflush;
/* requests posted waiting for completion */
atomic_t pending_count;
/* requests in backlog queues */
atomic_t backlog_count;
/* command size 32B/64B */
u8 instr_size;
u8 qno;
u32 qsize;
/* unaligned addresses */
u8 *head_unaligned;
dma_addr_t dma_unaligned;
/* dma address of the base */
dma_addr_t dma;
};
struct nitrox_hw {
/* firmware version */
char fw_name[VERSION_LEN];
u16 vendor_id;
u16 device_id;
u8 revision_id;
/* CNN55XX cores */
u8 se_cores;
u8 ae_cores;
u8 zip_cores;
};
#define MAX_MSIX_VECTOR_NAME 20
/**
* vectors for queues (64 AE, 64 SE and 64 ZIP) and
* error condition/mailbox.
*/
#define MAX_MSIX_VECTORS 192
struct nitrox_msix {
struct msix_entry *entries;
char **names;
DECLARE_BITMAP(irqs, MAX_MSIX_VECTORS);
u32 nr_entries;
};
struct bh_data {
/* slc port completion count address */
u8 __iomem *completion_cnt_csr_addr;
struct nitrox_cmdq *cmdq;
struct tasklet_struct resp_handler;
};
struct nitrox_bh {
struct bh_data *slc;
};
/* NITROX-5 driver state */
#define NITROX_UCODE_LOADED 0
#define NITROX_READY 1
/* command queue size */
#define DEFAULT_CMD_QLEN 2048
/* command timeout in milliseconds */
#define CMD_TIMEOUT 2000
#define DEV(ndev) ((struct device *)(&(ndev)->pdev->dev))
#define PF_MODE 0
#define NITROX_CSR_ADDR(ndev, offset) \
((ndev)->bar_addr + (offset))
/**
* struct nitrox_device - NITROX Device Information.
* @list: pointer to linked list of devices
* @bar_addr: iomap address
* @pdev: PCI device information
* @status: NITROX status
* @timeout: Request timeout in jiffies
* @refcnt: Device usage count
* @idx: device index (0..N)
* @node: NUMA node id attached
* @qlen: Command queue length
* @nr_queues: Number of command queues
* @ctx_pool: DMA pool for crypto context
* @pkt_cmdqs: SE Command queues
* @msix: MSI-X information
* @bh: post processing work
* @hw: hardware information
* @debugfs_dir: debugfs directory
*/
struct nitrox_device {
struct list_head list;
u8 __iomem *bar_addr;
struct pci_dev *pdev;
unsigned long status;
unsigned long timeout;
refcount_t refcnt;
u8 idx;
int node;
u16 qlen;
u16 nr_queues;
struct dma_pool *ctx_pool;
struct nitrox_cmdq *pkt_cmdqs;
struct nitrox_msix msix;
struct nitrox_bh bh;
struct nitrox_hw hw;
#if IS_ENABLED(CONFIG_DEBUG_FS)
struct dentry *debugfs_dir;
#endif
};
/**
* nitrox_read_csr - Read from device register
* @ndev: NITROX device
* @offset: offset of the register to read
*
* Returns: value read
*/
static inline u64 nitrox_read_csr(struct nitrox_device *ndev, u64 offset)
{
return readq(ndev->bar_addr + offset);
}
/**
* nitrox_write_csr - Write to device register
* @ndev: NITROX device
* @offset: offset of the register to write
* @value: value to write
*/
static inline void nitrox_write_csr(struct nitrox_device *ndev, u64 offset,
u64 value)
{
writeq(value, (ndev->bar_addr + offset));
}
static inline int nitrox_ready(struct nitrox_device *ndev)
{
return test_bit(NITROX_READY, &ndev->status);
}
#endif /* __NITROX_DEV_H */
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