drivers: crypto: hisilicon: implement QM driver - #6212
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The experts from community have provided many constructive and helpful suggestions, which we have incorporated through multiple rounds of revisions. However, the original PR #5894 contained too many modules, making it difficult to review. Therefore, we have split out a completed module into a separate PR for easier review. We look forward to receiving valuable feedback from the experts. |
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Makes sense, it's not the first time this approach has been needed. |
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How about something like: --- a/core/drivers/crypto/hisilicon/hisi_qm.c
+++ b/core/drivers/crypto/hisilicon/hisi_qm.c
@@ -93,11 +93,16 @@ enum qm_mailbox_cmd_v3 {
};
struct qm_mailbox {
- uint16_t w0;
- uint16_t queue;
- uint32_t base_l;
- uint32_t base_h;
- uint32_t token;
+ union {
+ struct {
+ uint16_t w0;
+ uint16_t queue;
+ uint32_t base_l;
+ uint32_t base_h;
+ uint32_t token;
+ };
+ uint64_t x[2];
+ };
};
struct qm_dfx_registers {
@@ -148,18 +153,12 @@ static enum hisi_drv_status qm_wait_mb_ready(struct hisi_qm *qm)
POLL_TIMEOUT);
}
-static void qm_mb_write(struct hisi_qm *qm, void *src)
+static void qm_mb_write(struct hisi_qm *qm, struct qm_mailbox *mb)
{
vaddr_t dst = qm->io_base + QM_MAILBOX_BASE;
- unsigned long tmp0 = 0;
- unsigned long tmp1 = 0;
/* 128bits should be written to hardware at one time */
- asm volatile ("ldp %0, %1, %3\n"
- "stp %0, %1, %2\n"
- : "=&r"(tmp0), "=&r"(tmp1), "+Q"(*((char *)dst))
- : "Q"(*((char *)src))
- : "memory");
+ write_64bit_pair(dst, mb->x[0], mb->x[1]);
dsb();
}
to avoid mixing inline assembly directly and also fix the potential alignment problem with struct qm_mailbox.
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| HISI_QM_DRVCRYPT_HW_EACCESS, | ||
| }; | ||
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| #define readl_relaxed_poll_timeout(addr, val, cond, delay_us, timeout_us) \ |
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I still think "relax_" prefix should be removed. This function does not relax CPU: udelay() is spinning.
| for (i = QM_SQC_VFT; i <= QM_CQC_VFT; i++) { | ||
| ret = qm_set_vft_common(qm, i, function, base, num); | ||
| if (ret) { | ||
| EMSG("QM set type%d fail", i); |
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nitpicking: "QM set type%"PRId32" fail"
| } | ||
| } | ||
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| #define HISI_QM_RECV_DONE 0xAF |
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maybe move to source file top?
Implement write_64bit_pair that write two 64 bits data together. Signed-off-by: Xiaoxu Zeng <zengxiaoxu@huawei.com>
has been implement in a new pr #6228 |
The Hisilicon QM is a Queue Management module. In order to unify the interface between accelerator and software, a unified queue management module QM is used to interact with software. Each accelerator module integrates a QM. Software issues tasks to the SQ (Submmision Queue),and the QM obtains the address of the SQE (Submmision Queue Element). The BD (Buffer Description, same as SQE) information is sent to the accelerator. After the task processing is complete, the accelerator applies for a write-back address from the QM to write back the SQ. Signed-off-by: Xiaoxu Zeng <zengxiaoxu@huawei.com>
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4 participants
The Hisilicon QM is a Queue Management module.
In order to unify the interface between accelerator and software, a unified queue management module QM is used to interact with software. Each accelerator module integrates a QM. Software issues tasks to the SQ (Submmision Queue),and the QM obtains the address of the SQE (Submmision Queue Element). The BD (Buffer Description, same as SQE) information is sent to the accelerator. After the task processing is complete, the accelerator applies for a write-back address from the QM to write back the SQ.