Commit 8a88d091 authored by Kai Ye's avatar Kai Ye Committed by Herbert Xu
Browse files

crypto: hisilicon/sec - support last word dumping 



Add last word dumping function during sec engine controller reset.

Signed-off-by: default avatarKai Ye <yekai13@huawei.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent a888ccd6

drivers/crypto/hisilicon/sec2/sec_main.c

+54 −1
Original line number Diff line number Diff line
@@ -861,6 +861,53 @@ static void sec_debugfs_exit(struct hisi_qm *qm) 
	debugfs_remove_recursive(qm->debug.debug_root);

}



static int sec_show_last_regs_init(struct hisi_qm *qm)

{

	struct qm_debug *debug = &qm->debug;

	int i;



	debug->last_words = kcalloc(ARRAY_SIZE(sec_dfx_regs),

					sizeof(unsigned int), GFP_KERNEL);

	if (!debug->last_words)

		return -ENOMEM;



	for (i = 0; i < ARRAY_SIZE(sec_dfx_regs); i++)

		debug->last_words[i] = readl_relaxed(qm->io_base +

							sec_dfx_regs[i].offset);



	return 0;

}



static void sec_show_last_regs_uninit(struct hisi_qm *qm)

{

	struct qm_debug *debug = &qm->debug;



	if (qm->fun_type == QM_HW_VF || !debug->last_words)

		return;



	kfree(debug->last_words);

	debug->last_words = NULL;

}



static void sec_show_last_dfx_regs(struct hisi_qm *qm)

{

	struct qm_debug *debug = &qm->debug;

	struct pci_dev *pdev = qm->pdev;

	u32 val;

	int i;



	if (qm->fun_type == QM_HW_VF || !debug->last_words)

		return;



	/* dumps last word of the debugging registers during controller reset */

	for (i = 0; i < ARRAY_SIZE(sec_dfx_regs); i++) {

		val = readl_relaxed(qm->io_base + sec_dfx_regs[i].offset);

		if (val != debug->last_words[i])

			pci_info(pdev, "%s \t= 0x%08x => 0x%08x\n",

				sec_dfx_regs[i].name, debug->last_words[i], val);

	}

}



static void sec_log_hw_error(struct hisi_qm *qm, u32 err_sts)

{

	const struct sec_hw_error *errs = sec_hw_errors;
@@ -927,6 +974,7 @@ static const struct hisi_qm_err_ini sec_err_ini = { 
	.open_axi_master_ooo	= sec_open_axi_master_ooo,

	.open_sva_prefetch	= sec_open_sva_prefetch,

	.close_sva_prefetch	= sec_close_sva_prefetch,

	.show_last_dfx_regs	= sec_show_last_dfx_regs,

	.err_info_init		= sec_err_info_init,

};
@@ -945,8 +993,11 @@ static int sec_pf_probe_init(struct sec_dev *sec) 
	sec_open_sva_prefetch(qm);

	hisi_qm_dev_err_init(qm);

	sec_debug_regs_clear(qm);

	ret = sec_show_last_regs_init(qm);

	if (ret)

		pci_err(qm->pdev, "Failed to init last word regs!\n");



	return 0;

	return ret;

}



static int sec_qm_init(struct hisi_qm *qm, struct pci_dev *pdev)
@@ -1120,6 +1171,7 @@ static int sec_probe(struct pci_dev *pdev, const struct pci_device_id *id) 
	sec_debugfs_exit(qm);

	hisi_qm_stop(qm, QM_NORMAL);

err_probe_uninit:

	sec_show_last_regs_uninit(qm);

	sec_probe_uninit(qm);

err_qm_uninit:

	sec_qm_uninit(qm);
@@ -1144,6 +1196,7 @@ static void sec_remove(struct pci_dev *pdev) 


	if (qm->fun_type == QM_HW_PF)

		sec_debug_regs_clear(qm);

	sec_show_last_regs_uninit(qm);



	sec_probe_uninit(qm);