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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-05 12:22:23 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-05 12:22:23 -0700 |
commit | 8ad06e56dcbc1984ef0ff8f6e3c19982c5809f73 (patch) | |
tree | 74bc746a4f18eeddfc085b76c776ddcf2c798cfa /drivers/crypto/cavium/nitrox/nitrox_dev.h | |
parent | 59005b0c59a164101b0273e4bda212c809dc2246 (diff) | |
parent | 035f901eac4d2d0fd40f3055026355d55d46949f (diff) | |
download | linux-8ad06e56dcbc1984ef0ff8f6e3c19982c5809f73.tar.bz2 |
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"Algorithms:
- add private key generation to ecdh
Drivers:
- add generic gcm(aes) to aesni-intel
- add SafeXcel EIP197 crypto engine driver
- add ecb(aes), cfb(aes) and ecb(des3_ede) to cavium
- add support for CNN55XX adapters in cavium
- add ctr mode to chcr
- add support for gcm(aes) to omap"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (140 commits)
crypto: testmgr - Reenable sha1/aes in FIPS mode
crypto: ccp - Release locks before returning
crypto: cavium/nitrox - dma_mapping_error() returns bool
crypto: doc - fix typo in docs
Documentation/bindings: Document the SafeXel cryptographic engine driver
crypto: caam - fix gfp allocation flags (part II)
crypto: caam - fix gfp allocation flags (part I)
crypto: drbg - Fixes panic in wait_for_completion call
crypto: caam - make of_device_ids const.
crypto: vmx - remove unnecessary check
crypto: n2 - make of_device_ids const
crypto: inside-secure - use the base_end pointer in ring rollback
crypto: inside-secure - increase the batch size
crypto: inside-secure - only dequeue when needed
crypto: inside-secure - get the backlog before dequeueing the request
crypto: inside-secure - stop requeueing failed requests
crypto: inside-secure - use one queue per hw ring
crypto: inside-secure - update the context and request later
crypto: inside-secure - align the cipher and hash send functions
crypto: inside-secure - optimize DSE bufferability control
...
Diffstat (limited to 'drivers/crypto/cavium/nitrox/nitrox_dev.h')
-rw-r--r-- | drivers/crypto/cavium/nitrox/nitrox_dev.h | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/crypto/cavium/nitrox/nitrox_dev.h b/drivers/crypto/cavium/nitrox/nitrox_dev.h new file mode 100644 index 000000000000..57858b04f165 --- /dev/null +++ b/drivers/crypto/cavium/nitrox/nitrox_dev.h @@ -0,0 +1,179 @@ +#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 */ |