diff options
| author | Horia Geanta <horia.geanta@nxp.com> | 2023-07-24 08:52:30 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-08-04 16:59:55 +0800 |
| commit | 322d74752c28a71fbca3650b98c21c58d25414a8 (patch) | |
| tree | e641adace7485ad875de4103f3c1281990432a76 /drivers/crypto/caam/intern.h | |
| parent | 9a6913feb46c601e0895fc9f89b715b90a4cbb87 (diff) | |
crypto: caam - add power management support
Add support for suspend and resume operation for PM in CAAM driver.
When the CAAM goes in suspend, the hardware is considered to do nothing.
On some platforms, the power of the CAAM is not turned off so it keeps
its configuration.
On other platforms, it doesn't so it is necessary to save the state of
the CAAM:
- JRs MID
- Address of input and output rings
Signed-off-by: Horia Geanta <horia.geanta@nxp.com>
Signed-off-by: Victoria Milhoan <vicki.milhoan@freescale.com>
Signed-off-by: Dan Douglass <dan.douglass@nxp.com>
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
Signed-off-by: Franck LENORMAND <franck.lenormand@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Gaurav Jain <gaurav.jain@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam/intern.h')
| -rw-r--r-- | drivers/crypto/caam/intern.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/crypto/caam/intern.h b/drivers/crypto/caam/intern.h index b4f7bf77f487..e51320150872 100644 --- a/drivers/crypto/caam/intern.h +++ b/drivers/crypto/caam/intern.h @@ -4,7 +4,7 @@ * Private/internal definitions between modules * * Copyright 2008-2011 Freescale Semiconductor, Inc. - * Copyright 2019 NXP + * Copyright 2019, 2023 NXP */ #ifndef INTERN_H @@ -47,6 +47,16 @@ struct caam_jrentry_info { u32 desc_size; /* Stored size for postprocessing, header derived */ }; +struct caam_jr_state { + dma_addr_t inpbusaddr; + dma_addr_t outbusaddr; +}; + +struct caam_jr_dequeue_params { + struct device *dev; + int enable_itr; +}; + /* Private sub-storage for a single JobR */ struct caam_drv_private_jr { struct list_head list_node; /* Job Ring device list */ @@ -54,6 +64,7 @@ struct caam_drv_private_jr { int ridx; struct caam_job_ring __iomem *rregs; /* JobR's register space */ struct tasklet_struct irqtask; + struct caam_jr_dequeue_params tasklet_params; int irq; /* One per queue */ bool hwrng; @@ -71,6 +82,15 @@ struct caam_drv_private_jr { int tail; /* entinfo (s/w ring) tail index */ void *outring; /* Base of output ring, DMA-safe */ struct crypto_engine *engine; + + struct caam_jr_state state; /* State of the JR during PM */ +}; + +struct caam_ctl_state { + struct masterid deco_mid[16]; + struct masterid jr_mid[4]; + u32 mcr; + u32 scfgr; }; /* @@ -116,6 +136,9 @@ struct caam_drv_private { struct dentry *ctl; /* controller dir */ struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap; #endif + + int caam_off_during_pm; /* If the CAAM is reset after suspend */ + struct caam_ctl_state state; /* State of the CTL during PM */ }; #ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API |