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path: root/drivers/crypto/hisilicon/zip/zip_main.c
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Diffstat (limited to 'drivers/crypto/hisilicon/zip/zip_main.c')
-rw-r--r--drivers/crypto/hisilicon/zip/zip_main.c1010
1 files changed, 1010 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/zip/zip_main.c b/drivers/crypto/hisilicon/zip/zip_main.c
new file mode 100644
index 000000000000..1b2ee96c888d
--- /dev/null
+++ b/drivers/crypto/hisilicon/zip/zip_main.c
@@ -0,0 +1,1010 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2019 HiSilicon Limited. */
+#include <linux/acpi.h>
+#include <linux/aer.h>
+#include <linux/bitops.h>
+#include <linux/debugfs.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/seq_file.h>
+#include <linux/topology.h>
+#include "zip.h"
+
+#define PCI_DEVICE_ID_ZIP_PF 0xa250
+#define PCI_DEVICE_ID_ZIP_VF 0xa251
+
+#define HZIP_VF_NUM 63
+#define HZIP_QUEUE_NUM_V1 4096
+#define HZIP_QUEUE_NUM_V2 1024
+
+#define HZIP_CLOCK_GATE_CTRL 0x301004
+#define COMP0_ENABLE BIT(0)
+#define COMP1_ENABLE BIT(1)
+#define DECOMP0_ENABLE BIT(2)
+#define DECOMP1_ENABLE BIT(3)
+#define DECOMP2_ENABLE BIT(4)
+#define DECOMP3_ENABLE BIT(5)
+#define DECOMP4_ENABLE BIT(6)
+#define DECOMP5_ENABLE BIT(7)
+#define ALL_COMP_DECOMP_EN (COMP0_ENABLE | COMP1_ENABLE | \
+ DECOMP0_ENABLE | DECOMP1_ENABLE | \
+ DECOMP2_ENABLE | DECOMP3_ENABLE | \
+ DECOMP4_ENABLE | DECOMP5_ENABLE)
+#define DECOMP_CHECK_ENABLE BIT(16)
+#define HZIP_FSM_MAX_CNT 0x301008
+
+#define HZIP_PORT_ARCA_CHE_0 0x301040
+#define HZIP_PORT_ARCA_CHE_1 0x301044
+#define HZIP_PORT_AWCA_CHE_0 0x301060
+#define HZIP_PORT_AWCA_CHE_1 0x301064
+#define CACHE_ALL_EN 0xffffffff
+
+#define HZIP_BD_RUSER_32_63 0x301110
+#define HZIP_SGL_RUSER_32_63 0x30111c
+#define HZIP_DATA_RUSER_32_63 0x301128
+#define HZIP_DATA_WUSER_32_63 0x301134
+#define HZIP_BD_WUSER_32_63 0x301140
+
+#define HZIP_QM_IDEL_STATUS 0x3040e4
+
+#define HZIP_CORE_DEBUG_COMP_0 0x302000
+#define HZIP_CORE_DEBUG_COMP_1 0x303000
+#define HZIP_CORE_DEBUG_DECOMP_0 0x304000
+#define HZIP_CORE_DEBUG_DECOMP_1 0x305000
+#define HZIP_CORE_DEBUG_DECOMP_2 0x306000
+#define HZIP_CORE_DEBUG_DECOMP_3 0x307000
+#define HZIP_CORE_DEBUG_DECOMP_4 0x308000
+#define HZIP_CORE_DEBUG_DECOMP_5 0x309000
+
+#define HZIP_CORE_INT_SOURCE 0x3010A0
+#define HZIP_CORE_INT_MASK 0x3010A4
+#define HZIP_CORE_INT_STATUS 0x3010AC
+#define HZIP_CORE_INT_STATUS_M_ECC BIT(1)
+#define HZIP_CORE_SRAM_ECC_ERR_INFO 0x301148
+#define SRAM_ECC_ERR_NUM_SHIFT 16
+#define SRAM_ECC_ERR_ADDR_SHIFT 24
+#define HZIP_CORE_INT_DISABLE 0x000007FF
+#define HZIP_COMP_CORE_NUM 2
+#define HZIP_DECOMP_CORE_NUM 6
+#define HZIP_CORE_NUM (HZIP_COMP_CORE_NUM + \
+ HZIP_DECOMP_CORE_NUM)
+#define HZIP_SQE_SIZE 128
+#define HZIP_SQ_SIZE (HZIP_SQE_SIZE * QM_Q_DEPTH)
+#define HZIP_PF_DEF_Q_NUM 64
+#define HZIP_PF_DEF_Q_BASE 0
+
+#define HZIP_SOFT_CTRL_CNT_CLR_CE 0x301000
+#define SOFT_CTRL_CNT_CLR_CE_BIT BIT(0)
+
+#define HZIP_NUMA_DISTANCE 100
+#define HZIP_BUF_SIZE 22
+
+static const char hisi_zip_name[] = "hisi_zip";
+static struct dentry *hzip_debugfs_root;
+LIST_HEAD(hisi_zip_list);
+DEFINE_MUTEX(hisi_zip_list_lock);
+
+#ifdef CONFIG_NUMA
+static struct hisi_zip *find_zip_device_numa(int node)
+{
+ struct hisi_zip *zip = NULL;
+ struct hisi_zip *hisi_zip;
+ int min_distance = HZIP_NUMA_DISTANCE;
+ struct device *dev;
+
+ list_for_each_entry(hisi_zip, &hisi_zip_list, list) {
+ dev = &hisi_zip->qm.pdev->dev;
+ if (node_distance(dev->numa_node, node) < min_distance) {
+ zip = hisi_zip;
+ min_distance = node_distance(dev->numa_node, node);
+ }
+ }
+
+ return zip;
+}
+#endif
+
+struct hisi_zip *find_zip_device(int node)
+{
+ struct hisi_zip *zip = NULL;
+
+ mutex_lock(&hisi_zip_list_lock);
+#ifdef CONFIG_NUMA
+ zip = find_zip_device_numa(node);
+#else
+ zip = list_first_entry(&hisi_zip_list, struct hisi_zip, list);
+#endif
+ mutex_unlock(&hisi_zip_list_lock);
+
+ return zip;
+}
+
+struct hisi_zip_hw_error {
+ u32 int_msk;
+ const char *msg;
+};
+
+static const struct hisi_zip_hw_error zip_hw_error[] = {
+ { .int_msk = BIT(0), .msg = "zip_ecc_1bitt_err" },
+ { .int_msk = BIT(1), .msg = "zip_ecc_2bit_err" },
+ { .int_msk = BIT(2), .msg = "zip_axi_rresp_err" },
+ { .int_msk = BIT(3), .msg = "zip_axi_bresp_err" },
+ { .int_msk = BIT(4), .msg = "zip_src_addr_parse_err" },
+ { .int_msk = BIT(5), .msg = "zip_dst_addr_parse_err" },
+ { .int_msk = BIT(6), .msg = "zip_pre_in_addr_err" },
+ { .int_msk = BIT(7), .msg = "zip_pre_in_data_err" },
+ { .int_msk = BIT(8), .msg = "zip_com_inf_err" },
+ { .int_msk = BIT(9), .msg = "zip_enc_inf_err" },
+ { .int_msk = BIT(10), .msg = "zip_pre_out_err" },
+ { /* sentinel */ }
+};
+
+enum ctrl_debug_file_index {
+ HZIP_CURRENT_QM,
+ HZIP_CLEAR_ENABLE,
+ HZIP_DEBUG_FILE_NUM,
+};
+
+static const char * const ctrl_debug_file_name[] = {
+ [HZIP_CURRENT_QM] = "current_qm",
+ [HZIP_CLEAR_ENABLE] = "clear_enable",
+};
+
+struct ctrl_debug_file {
+ enum ctrl_debug_file_index index;
+ spinlock_t lock;
+ struct hisi_zip_ctrl *ctrl;
+};
+
+/*
+ * One ZIP controller has one PF and multiple VFs, some global configurations
+ * which PF has need this structure.
+ *
+ * Just relevant for PF.
+ */
+struct hisi_zip_ctrl {
+ u32 num_vfs;
+ struct hisi_zip *hisi_zip;
+ struct dentry *debug_root;
+ struct ctrl_debug_file files[HZIP_DEBUG_FILE_NUM];
+};
+
+enum {
+ HZIP_COMP_CORE0,
+ HZIP_COMP_CORE1,
+ HZIP_DECOMP_CORE0,
+ HZIP_DECOMP_CORE1,
+ HZIP_DECOMP_CORE2,
+ HZIP_DECOMP_CORE3,
+ HZIP_DECOMP_CORE4,
+ HZIP_DECOMP_CORE5,
+};
+
+static const u64 core_offsets[] = {
+ [HZIP_COMP_CORE0] = 0x302000,
+ [HZIP_COMP_CORE1] = 0x303000,
+ [HZIP_DECOMP_CORE0] = 0x304000,
+ [HZIP_DECOMP_CORE1] = 0x305000,
+ [HZIP_DECOMP_CORE2] = 0x306000,
+ [HZIP_DECOMP_CORE3] = 0x307000,
+ [HZIP_DECOMP_CORE4] = 0x308000,
+ [HZIP_DECOMP_CORE5] = 0x309000,
+};
+
+static struct debugfs_reg32 hzip_dfx_regs[] = {
+ {"HZIP_GET_BD_NUM ", 0x00ull},
+ {"HZIP_GET_RIGHT_BD ", 0x04ull},
+ {"HZIP_GET_ERROR_BD ", 0x08ull},
+ {"HZIP_DONE_BD_NUM ", 0x0cull},
+ {"HZIP_WORK_CYCLE ", 0x10ull},
+ {"HZIP_IDLE_CYCLE ", 0x18ull},
+ {"HZIP_MAX_DELAY ", 0x20ull},
+ {"HZIP_MIN_DELAY ", 0x24ull},
+ {"HZIP_AVG_DELAY ", 0x28ull},
+ {"HZIP_MEM_VISIBLE_DATA ", 0x30ull},
+ {"HZIP_MEM_VISIBLE_ADDR ", 0x34ull},
+ {"HZIP_COMSUMED_BYTE ", 0x38ull},
+ {"HZIP_PRODUCED_BYTE ", 0x40ull},
+ {"HZIP_COMP_INF ", 0x70ull},
+ {"HZIP_PRE_OUT ", 0x78ull},
+ {"HZIP_BD_RD ", 0x7cull},
+ {"HZIP_BD_WR ", 0x80ull},
+ {"HZIP_GET_BD_AXI_ERR_NUM ", 0x84ull},
+ {"HZIP_GET_BD_PARSE_ERR_NUM ", 0x88ull},
+ {"HZIP_ADD_BD_AXI_ERR_NUM ", 0x8cull},
+ {"HZIP_DECOMP_STF_RELOAD_CURR_ST ", 0x94ull},
+ {"HZIP_DECOMP_LZ77_CURR_ST ", 0x9cull},
+};
+
+static int pf_q_num_set(const char *val, const struct kernel_param *kp)
+{
+ struct pci_dev *pdev = pci_get_device(PCI_VENDOR_ID_HUAWEI,
+ PCI_DEVICE_ID_ZIP_PF, NULL);
+ u32 n, q_num;
+ u8 rev_id;
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+
+ if (!pdev) {
+ q_num = min_t(u32, HZIP_QUEUE_NUM_V1, HZIP_QUEUE_NUM_V2);
+ pr_info("No device found currently, suppose queue number is %d\n",
+ q_num);
+ } else {
+ rev_id = pdev->revision;
+ switch (rev_id) {
+ case QM_HW_V1:
+ q_num = HZIP_QUEUE_NUM_V1;
+ break;
+ case QM_HW_V2:
+ q_num = HZIP_QUEUE_NUM_V2;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ ret = kstrtou32(val, 10, &n);
+ if (ret != 0 || n > q_num || n == 0)
+ return -EINVAL;
+
+ return param_set_int(val, kp);
+}
+
+static const struct kernel_param_ops pf_q_num_ops = {
+ .set = pf_q_num_set,
+ .get = param_get_int,
+};
+
+static u32 pf_q_num = HZIP_PF_DEF_Q_NUM;
+module_param_cb(pf_q_num, &pf_q_num_ops, &pf_q_num, 0444);
+MODULE_PARM_DESC(pf_q_num, "Number of queues in PF(v1 1-4096, v2 1-1024)");
+
+static int uacce_mode;
+module_param(uacce_mode, int, 0);
+
+static const struct pci_device_id hisi_zip_dev_ids[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_ZIP_PF) },
+ { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_ZIP_VF) },
+ { 0, }
+};
+MODULE_DEVICE_TABLE(pci, hisi_zip_dev_ids);
+
+static inline void hisi_zip_add_to_list(struct hisi_zip *hisi_zip)
+{
+ mutex_lock(&hisi_zip_list_lock);
+ list_add_tail(&hisi_zip->list, &hisi_zip_list);
+ mutex_unlock(&hisi_zip_list_lock);
+}
+
+static inline void hisi_zip_remove_from_list(struct hisi_zip *hisi_zip)
+{
+ mutex_lock(&hisi_zip_list_lock);
+ list_del(&hisi_zip->list);
+ mutex_unlock(&hisi_zip_list_lock);
+}
+
+static void hisi_zip_set_user_domain_and_cache(struct hisi_zip *hisi_zip)
+{
+ void __iomem *base = hisi_zip->qm.io_base;
+
+ /* qm user domain */
+ writel(AXUSER_BASE, base + QM_ARUSER_M_CFG_1);
+ writel(ARUSER_M_CFG_ENABLE, base + QM_ARUSER_M_CFG_ENABLE);
+ writel(AXUSER_BASE, base + QM_AWUSER_M_CFG_1);
+ writel(AWUSER_M_CFG_ENABLE, base + QM_AWUSER_M_CFG_ENABLE);
+ writel(WUSER_M_CFG_ENABLE, base + QM_WUSER_M_CFG_ENABLE);
+
+ /* qm cache */
+ writel(AXI_M_CFG, base + QM_AXI_M_CFG);
+ writel(AXI_M_CFG_ENABLE, base + QM_AXI_M_CFG_ENABLE);
+ /* disable FLR triggered by BME(bus master enable) */
+ writel(PEH_AXUSER_CFG, base + QM_PEH_AXUSER_CFG);
+ writel(PEH_AXUSER_CFG_ENABLE, base + QM_PEH_AXUSER_CFG_ENABLE);
+
+ /* cache */
+ writel(CACHE_ALL_EN, base + HZIP_PORT_ARCA_CHE_0);
+ writel(CACHE_ALL_EN, base + HZIP_PORT_ARCA_CHE_1);
+ writel(CACHE_ALL_EN, base + HZIP_PORT_AWCA_CHE_0);
+ writel(CACHE_ALL_EN, base + HZIP_PORT_AWCA_CHE_1);
+
+ /* user domain configurations */
+ writel(AXUSER_BASE, base + HZIP_BD_RUSER_32_63);
+ writel(AXUSER_BASE, base + HZIP_SGL_RUSER_32_63);
+ writel(AXUSER_BASE, base + HZIP_BD_WUSER_32_63);
+ writel(AXUSER_BASE, base + HZIP_DATA_RUSER_32_63);
+ writel(AXUSER_BASE, base + HZIP_DATA_WUSER_32_63);
+
+ /* let's open all compression/decompression cores */
+ writel(DECOMP_CHECK_ENABLE | ALL_COMP_DECOMP_EN,
+ base + HZIP_CLOCK_GATE_CTRL);
+
+ /* enable sqc writeback */
+ writel(SQC_CACHE_ENABLE | CQC_CACHE_ENABLE | SQC_CACHE_WB_ENABLE |
+ CQC_CACHE_WB_ENABLE | FIELD_PREP(SQC_CACHE_WB_THRD, 1) |
+ FIELD_PREP(CQC_CACHE_WB_THRD, 1), base + QM_CACHE_CTL);
+}
+
+static void hisi_zip_hw_error_set_state(struct hisi_zip *hisi_zip, bool state)
+{
+ struct hisi_qm *qm = &hisi_zip->qm;
+
+ if (qm->ver == QM_HW_V1) {
+ writel(HZIP_CORE_INT_DISABLE, qm->io_base + HZIP_CORE_INT_MASK);
+ dev_info(&qm->pdev->dev, "ZIP v%d does not support hw error handle\n",
+ qm->ver);
+ return;
+ }
+
+ if (state) {
+ /* clear ZIP hw error source if having */
+ writel(HZIP_CORE_INT_DISABLE, hisi_zip->qm.io_base +
+ HZIP_CORE_INT_SOURCE);
+ /* enable ZIP hw error interrupts */
+ writel(0, hisi_zip->qm.io_base + HZIP_CORE_INT_MASK);
+ } else {
+ /* disable ZIP hw error interrupts */
+ writel(HZIP_CORE_INT_DISABLE,
+ hisi_zip->qm.io_base + HZIP_CORE_INT_MASK);
+ }
+}
+
+static inline struct hisi_qm *file_to_qm(struct ctrl_debug_file *file)
+{
+ struct hisi_zip *hisi_zip = file->ctrl->hisi_zip;
+
+ return &hisi_zip->qm;
+}
+
+static u32 current_qm_read(struct ctrl_debug_file *file)
+{
+ struct hisi_qm *qm = file_to_qm(file);
+
+ return readl(qm->io_base + QM_DFX_MB_CNT_VF);
+}
+
+static int current_qm_write(struct ctrl_debug_file *file, u32 val)
+{
+ struct hisi_qm *qm = file_to_qm(file);
+ struct hisi_zip_ctrl *ctrl = file->ctrl;
+ u32 vfq_num;
+ u32 tmp;
+
+ if (val > ctrl->num_vfs)
+ return -EINVAL;
+
+ /* Calculate curr_qm_qp_num and store */
+ if (val == 0) {
+ qm->debug.curr_qm_qp_num = qm->qp_num;
+ } else {
+ vfq_num = (qm->ctrl_qp_num - qm->qp_num) / ctrl->num_vfs;
+ if (val == ctrl->num_vfs)
+ qm->debug.curr_qm_qp_num = qm->ctrl_qp_num -
+ qm->qp_num - (ctrl->num_vfs - 1) * vfq_num;
+ else
+ qm->debug.curr_qm_qp_num = vfq_num;
+ }
+
+ writel(val, qm->io_base + QM_DFX_MB_CNT_VF);
+ writel(val, qm->io_base + QM_DFX_DB_CNT_VF);
+
+ tmp = val |
+ (readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) & CURRENT_Q_MASK);
+ writel(tmp, qm->io_base + QM_DFX_SQE_CNT_VF_SQN);
+
+ tmp = val |
+ (readl(qm->io_base + QM_DFX_CQE_CNT_VF_CQN) & CURRENT_Q_MASK);
+ writel(tmp, qm->io_base + QM_DFX_CQE_CNT_VF_CQN);
+
+ return 0;
+}
+
+static u32 clear_enable_read(struct ctrl_debug_file *file)
+{
+ struct hisi_qm *qm = file_to_qm(file);
+
+ return readl(qm->io_base + HZIP_SOFT_CTRL_CNT_CLR_CE) &
+ SOFT_CTRL_CNT_CLR_CE_BIT;
+}
+
+static int clear_enable_write(struct ctrl_debug_file *file, u32 val)
+{
+ struct hisi_qm *qm = file_to_qm(file);
+ u32 tmp;
+
+ if (val != 1 && val != 0)
+ return -EINVAL;
+
+ tmp = (readl(qm->io_base + HZIP_SOFT_CTRL_CNT_CLR_CE) &
+ ~SOFT_CTRL_CNT_CLR_CE_BIT) | val;
+ writel(tmp, qm->io_base + HZIP_SOFT_CTRL_CNT_CLR_CE);
+
+ return 0;
+}
+
+static ssize_t ctrl_debug_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct ctrl_debug_file *file = filp->private_data;
+ char tbuf[HZIP_BUF_SIZE];
+ u32 val;
+ int ret;
+
+ spin_lock_irq(&file->lock);
+ switch (file->index) {
+ case HZIP_CURRENT_QM:
+ val = current_qm_read(file);
+ break;
+ case HZIP_CLEAR_ENABLE:
+ val = clear_enable_read(file);
+ break;
+ default:
+ spin_unlock_irq(&file->lock);
+ return -EINVAL;
+ }
+ spin_unlock_irq(&file->lock);
+ ret = sprintf(tbuf, "%u\n", val);
+ return simple_read_from_buffer(buf, count, pos, tbuf, ret);
+}
+
+static ssize_t ctrl_debug_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct ctrl_debug_file *file = filp->private_data;
+ char tbuf[HZIP_BUF_SIZE];
+ unsigned long val;
+ int len, ret;
+
+ if (*pos != 0)
+ return 0;
+
+ if (count >= HZIP_BUF_SIZE)
+ return -ENOSPC;
+
+ len = simple_write_to_buffer(tbuf, HZIP_BUF_SIZE - 1, pos, buf, count);
+ if (len < 0)
+ return len;
+
+ tbuf[len] = '\0';
+ if (kstrtoul(tbuf, 0, &val))
+ return -EFAULT;
+
+ spin_lock_irq(&file->lock);
+ switch (file->index) {
+ case HZIP_CURRENT_QM:
+ ret = current_qm_write(file, val);
+ if (ret)
+ goto err_input;
+ break;
+ case HZIP_CLEAR_ENABLE:
+ ret = clear_enable_write(file, val);
+ if (ret)
+ goto err_input;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err_input;
+ }
+ spin_unlock_irq(&file->lock);
+
+ return count;
+
+err_input:
+ spin_unlock_irq(&file->lock);
+ return ret;
+}
+
+static const struct file_operations ctrl_debug_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = ctrl_debug_read,
+ .write = ctrl_debug_write,
+};
+
+static int hisi_zip_core_debug_init(struct hisi_zip_ctrl *ctrl)
+{
+ struct hisi_zip *hisi_zip = ctrl->hisi_zip;
+ struct hisi_qm *qm = &hisi_zip->qm;
+ struct device *dev = &qm->pdev->dev;
+ struct debugfs_regset32 *regset;
+ struct dentry *tmp_d, *tmp;
+ char buf[HZIP_BUF_SIZE];
+ int i;
+
+ for (i = 0; i < HZIP_CORE_NUM; i++) {
+ if (i < HZIP_COMP_CORE_NUM)
+ sprintf(buf, "comp_core%d", i);
+ else
+ sprintf(buf, "decomp_core%d", i - HZIP_COMP_CORE_NUM);
+
+ tmp_d = debugfs_create_dir(buf, ctrl->debug_root);
+ if (!tmp_d)
+ return -ENOENT;
+
+ regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
+ if (!regset)
+ return -ENOENT;
+
+ regset->regs = hzip_dfx_regs;
+ regset->nregs = ARRAY_SIZE(hzip_dfx_regs);
+ regset->base = qm->io_base + core_offsets[i];
+
+ tmp = debugfs_create_regset32("regs", 0444, tmp_d, regset);
+ if (!tmp)
+ return -ENOENT;
+ }
+
+ return 0;
+}
+
+static int hisi_zip_ctrl_debug_init(struct hisi_zip_ctrl *ctrl)
+{
+ struct dentry *tmp;
+ int i;
+
+ for (i = HZIP_CURRENT_QM; i < HZIP_DEBUG_FILE_NUM; i++) {
+ spin_lock_init(&ctrl->files[i].lock);
+ ctrl->files[i].ctrl = ctrl;
+ ctrl->files[i].index = i;
+
+ tmp = debugfs_create_file(ctrl_debug_file_name[i], 0600,
+ ctrl->debug_root, ctrl->files + i,
+ &ctrl_debug_fops);
+ if (!tmp)
+ return -ENOENT;
+ }
+
+ return hisi_zip_core_debug_init(ctrl);
+}
+
+static int hisi_zip_debugfs_init(struct hisi_zip *hisi_zip)
+{
+ struct hisi_qm *qm = &hisi_zip->qm;
+ struct device *dev = &qm->pdev->dev;
+ struct dentry *dev_d;
+ int ret;
+
+ dev_d = debugfs_create_dir(dev_name(dev), hzip_debugfs_root);
+ if (!dev_d)
+ return -ENOENT;
+
+ qm->debug.debug_root = dev_d;
+ ret = hisi_qm_debug_init(qm);
+ if (ret)
+ goto failed_to_create;
+
+ if (qm->fun_type == QM_HW_PF) {
+ hisi_zip->ctrl->debug_root = dev_d;
+ ret = hisi_zip_ctrl_debug_init(hisi_zip->ctrl);
+ if (ret)
+ goto failed_to_create;
+ }
+
+ return 0;
+
+failed_to_create:
+ debugfs_remove_recursive(hzip_debugfs_root);
+ return ret;
+}
+
+static void hisi_zip_debug_regs_clear(struct hisi_zip *hisi_zip)
+{
+ struct hisi_qm *qm = &hisi_zip->qm;
+
+ writel(0x0, qm->io_base + QM_DFX_MB_CNT_VF);
+ writel(0x0, qm->io_base + QM_DFX_DB_CNT_VF);
+ writel(0x0, qm->io_base + HZIP_SOFT_CTRL_CNT_CLR_CE);
+
+ hisi_qm_debug_regs_clear(qm);
+}
+
+static void hisi_zip_debugfs_exit(struct hisi_zip *hisi_zip)
+{
+ struct hisi_qm *qm = &hisi_zip->qm;
+
+ debugfs_remove_recursive(qm->debug.debug_root);
+
+ if (qm->fun_type == QM_HW_PF)
+ hisi_zip_debug_regs_clear(hisi_zip);
+}
+
+static void hisi_zip_hw_error_init(struct hisi_zip *hisi_zip)
+{
+ hisi_qm_hw_error_init(&hisi_zip->qm, QM_BASE_CE,
+ QM_BASE_NFE | QM_ACC_WB_NOT_READY_TIMEOUT, 0,
+ QM_DB_RANDOM_INVALID);
+ hisi_zip_hw_error_set_state(hisi_zip, true);
+}
+
+static int hisi_zip_pf_probe_init(struct hisi_zip *hisi_zip)
+{
+ struct hisi_qm *qm = &hisi_zip->qm;
+ struct hisi_zip_ctrl *ctrl;
+
+ ctrl = devm_kzalloc(&qm->pdev->dev, sizeof(*ctrl), GFP_KERNEL);
+ if (!ctrl)
+ return -ENOMEM;
+
+ hisi_zip->ctrl = ctrl;
+ ctrl->hisi_zip = hisi_zip;
+
+ switch (qm->ver) {
+ case QM_HW_V1:
+ qm->ctrl_qp_num = HZIP_QUEUE_NUM_V1;
+ break;
+
+ case QM_HW_V2:
+ qm->ctrl_qp_num = HZIP_QUEUE_NUM_V2;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ hisi_zip_set_user_domain_and_cache(hisi_zip);
+ hisi_zip_hw_error_init(hisi_zip);
+ hisi_zip_debug_regs_clear(hisi_zip);
+
+ return 0;
+}
+
+static int hisi_zip_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct hisi_zip *hisi_zip;
+ enum qm_hw_ver rev_id;
+ struct hisi_qm *qm;
+ int ret;
+
+ rev_id = hisi_qm_get_hw_version(pdev);
+ if (rev_id == QM_HW_UNKNOWN)
+ return -EINVAL;
+
+ hisi_zip = devm_kzalloc(&pdev->dev, sizeof(*hisi_zip), GFP_KERNEL);
+ if (!hisi_zip)
+ return -ENOMEM;
+ pci_set_drvdata(pdev, hisi_zip);
+
+ qm = &hisi_zip->qm;
+ qm->pdev = pdev;
+ qm->ver = rev_id;
+
+ qm->sqe_size = HZIP_SQE_SIZE;
+ qm->dev_name = hisi_zip_name;
+ qm->fun_type = (pdev->device == PCI_DEVICE_ID_ZIP_PF) ? QM_HW_PF :
+ QM_HW_VF;
+ switch (uacce_mode) {
+ case 0:
+ qm->use_dma_api = true;
+ break;
+ case 1:
+ qm->use_dma_api = false;
+ break;
+ case 2:
+ qm->use_dma_api = true;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = hisi_qm_init(qm);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to init qm!\n");
+ return ret;
+ }
+
+ if (qm->fun_type == QM_HW_PF) {
+ ret = hisi_zip_pf_probe_init(hisi_zip);
+ if (ret)
+ return ret;
+
+ qm->qp_base = HZIP_PF_DEF_Q_BASE;
+ qm->qp_num = pf_q_num;
+ } else if (qm->fun_type == QM_HW_VF) {
+ /*
+ * have no way to get qm configure in VM in v1 hardware,
+ * so currently force PF to uses HZIP_PF_DEF_Q_NUM, and force
+ * to trigger only one VF in v1 hardware.
+ *
+ * v2 hardware has no such problem.
+ */
+ if (qm->ver == QM_HW_V1) {
+ qm->qp_base = HZIP_PF_DEF_Q_NUM;
+ qm->qp_num = HZIP_QUEUE_NUM_V1 - HZIP_PF_DEF_Q_NUM;
+ } else if (qm->ver == QM_HW_V2)
+ /* v2 starts to support get vft by mailbox */
+ hisi_qm_get_vft(qm, &qm->qp_base, &qm->qp_num);
+ }
+
+ ret = hisi_qm_start(qm);
+ if (ret)
+ goto err_qm_uninit;
+
+ ret = hisi_zip_debugfs_init(hisi_zip);
+ if (ret)
+ dev_err(&pdev->dev, "Failed to init debugfs (%d)!\n", ret);
+
+ hisi_zip_add_to_list(hisi_zip);
+
+ return 0;
+
+err_qm_uninit:
+ hisi_qm_uninit(qm);
+ return ret;
+}
+
+/* Currently we only support equal assignment */
+static int hisi_zip_vf_q_assign(struct hisi_zip *hisi_zip, int num_vfs)
+{
+ struct hisi_qm *qm = &hisi_zip->qm;
+ u32 qp_num = qm->qp_num;
+ u32 q_base = qp_num;
+ u32 q_num, remain_q_num, i;
+ int ret;
+
+ if (!num_vfs)
+ return -EINVAL;
+
+ remain_q_num = qm->ctrl_qp_num - qp_num;
+ if (remain_q_num < num_vfs)
+ return -EINVAL;
+
+ q_num = remain_q_num / num_vfs;
+ for (i = 1; i <= num_vfs; i++) {
+ if (i == num_vfs)
+ q_num += remain_q_num % num_vfs;
+ ret = hisi_qm_set_vft(qm, i, q_base, q_num);
+ if (ret)
+ return ret;
+ q_base += q_num;
+ }
+
+ return 0;
+}
+
+static int hisi_zip_clear_vft_config(struct hisi_zip *hisi_zip)
+{
+ struct hisi_zip_ctrl *ctrl = hisi_zip->ctrl;
+ struct hisi_qm *qm = &hisi_zip->qm;
+ u32 i, num_vfs = ctrl->num_vfs;
+ int ret;
+
+ for (i = 1; i <= num_vfs; i++) {
+ ret = hisi_qm_set_vft(qm, i, 0, 0);
+ if (ret)
+ return ret;
+ }
+
+ ctrl->num_vfs = 0;
+
+ return 0;
+}
+
+static int hisi_zip_sriov_enable(struct pci_dev *pdev, int max_vfs)
+{
+ struct hisi_zip *hisi_zip = pci_get_drvdata(pdev);
+ int pre_existing_vfs, num_vfs, ret;
+
+ pre_existing_vfs = pci_num_vf(pdev);
+
+ if (pre_existing_vfs) {
+ dev_err(&pdev->dev,
+ "Can't enable VF. Please disable pre-enabled VFs!\n");
+ return 0;
+ }
+
+ num_vfs = min_t(int, max_vfs, HZIP_VF_NUM);
+
+ ret = hisi_zip_vf_q_assign(hisi_zip, num_vfs);
+ if (ret) {
+ dev_err(&pdev->dev, "Can't assign queues for VF!\n");
+ return ret;
+ }
+
+ hisi_zip->ctrl->num_vfs = num_vfs;
+
+ ret = pci_enable_sriov(pdev, num_vfs);
+ if (ret) {
+ dev_err(&pdev->dev, "Can't enable VF!\n");
+ hisi_zip_clear_vft_config(hisi_zip);
+ return ret;
+ }
+
+ return num_vfs;
+}
+
+static int hisi_zip_sriov_disable(struct pci_dev *pdev)
+{
+ struct hisi_zip *hisi_zip = pci_get_drvdata(pdev);
+
+ if (pci_vfs_assigned(pdev)) {
+ dev_err(&pdev->dev,
+ "Can't disable VFs while VFs are assigned!\n");
+ return -EPERM;
+ }
+
+ /* remove in hisi_zip_pci_driver will be called to free VF resources */
+ pci_disable_sriov(pdev);
+
+ return hisi_zip_clear_vft_config(hisi_zip);
+}
+
+static int hisi_zip_sriov_configure(struct pci_dev *pdev, int num_vfs)
+{
+ if (num_vfs == 0)
+ return hisi_zip_sriov_disable(pdev);
+ else
+ return hisi_zip_sriov_enable(pdev, num_vfs);
+}
+
+static void hisi_zip_remove(struct pci_dev *pdev)
+{
+ struct hisi_zip *hisi_zip = pci_get_drvdata(pdev);
+ struct hisi_qm *qm = &hisi_zip->qm;
+
+ if (qm->fun_type == QM_HW_PF && hisi_zip->ctrl->num_vfs != 0)
+ hisi_zip_sriov_disable(pdev);
+
+ hisi_zip_debugfs_exit(hisi_zip);
+ hisi_qm_stop(qm);
+
+ if (qm->fun_type == QM_HW_PF)
+ hisi_zip_hw_error_set_state(hisi_zip, false);
+
+ hisi_qm_uninit(qm);
+ hisi_zip_remove_from_list(hisi_zip);
+}
+
+static void hisi_zip_log_hw_error(struct hisi_zip *hisi_zip, u32 err_sts)
+{
+ const struct hisi_zip_hw_error *err = zip_hw_error;
+ struct device *dev = &hisi_zip->qm.pdev->dev;
+ u32 err_val;
+
+ while (err->msg) {
+ if (err->int_msk & err_sts) {
+ dev_warn(dev, "%s [error status=0x%x] found\n",
+ err->msg, err->int_msk);
+
+ if (HZIP_CORE_INT_STATUS_M_ECC & err->int_msk) {
+ err_val = readl(hisi_zip->qm.io_base +
+ HZIP_CORE_SRAM_ECC_ERR_INFO);
+ dev_warn(dev, "hisi-zip multi ecc sram num=0x%x\n",
+ ((err_val >> SRAM_ECC_ERR_NUM_SHIFT) &
+ 0xFF));
+ dev_warn(dev, "hisi-zip multi ecc sram addr=0x%x\n",
+ (err_val >> SRAM_ECC_ERR_ADDR_SHIFT));
+ }
+ }
+ err++;
+ }
+}
+
+static pci_ers_result_t hisi_zip_hw_error_handle(struct hisi_zip *hisi_zip)
+{
+ u32 err_sts;
+
+ /* read err sts */
+ err_sts = readl(hisi_zip->qm.io_base + HZIP_CORE_INT_STATUS);
+
+ if (err_sts) {
+ hisi_zip_log_hw_error(hisi_zip, err_sts);
+ /* clear error interrupts */
+ writel(err_sts, hisi_zip->qm.io_base + HZIP_CORE_INT_SOURCE);
+
+ return PCI_ERS_RESULT_NEED_RESET;
+ }
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
+static pci_ers_result_t hisi_zip_process_hw_error(struct pci_dev *pdev)
+{
+ struct hisi_zip *hisi_zip = pci_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+ pci_ers_result_t qm_ret, zip_ret;
+
+ if (!hisi_zip) {
+ dev_err(dev,
+ "Can't recover ZIP-error occurred during device init\n");
+ return PCI_ERS_RESULT_NONE;
+ }
+
+ qm_ret = hisi_qm_hw_error_handle(&hisi_zip->qm);
+
+ zip_ret = hisi_zip_hw_error_handle(hisi_zip);
+
+ return (qm_ret == PCI_ERS_RESULT_NEED_RESET ||
+ zip_ret == PCI_ERS_RESULT_NEED_RESET) ?
+ PCI_ERS_RESULT_NEED_RESET : PCI_ERS_RESULT_RECOVERED;
+}
+
+static pci_ers_result_t hisi_zip_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ if (pdev->is_virtfn)
+ return PCI_ERS_RESULT_NONE;
+
+ dev_info(&pdev->dev, "PCI error detected, state(=%d)!!\n", state);
+ if (state == pci_channel_io_perm_failure)
+ return PCI_ERS_RESULT_DISCONNECT;
+
+ return hisi_zip_process_hw_error(pdev);
+}
+
+static const struct pci_error_handlers hisi_zip_err_handler = {
+ .error_detected = hisi_zip_error_detected,
+};
+
+static struct pci_driver hisi_zip_pci_driver = {
+ .name = "hisi_zip",
+ .id_table = hisi_zip_dev_ids,
+ .probe = hisi_zip_probe,
+ .remove = hisi_zip_remove,
+ .sriov_configure = IS_ENABLED(CONFIG_PCI_IOV) ?
+ hisi_zip_sriov_configure : 0,
+ .err_handler = &hisi_zip_err_handler,
+};
+
+static void hisi_zip_register_debugfs(void)
+{
+ if (!debugfs_initialized())
+ return;
+
+ hzip_debugfs_root = debugfs_create_dir("hisi_zip", NULL);
+ if (IS_ERR_OR_NULL(hzip_debugfs_root))
+ hzip_debugfs_root = NULL;
+}
+
+static void hisi_zip_unregister_debugfs(void)
+{
+ debugfs_remove_recursive(hzip_debugfs_root);
+}
+
+static int __init hisi_zip_init(void)
+{
+ int ret;
+
+ hisi_zip_register_debugfs();
+
+ ret = pci_register_driver(&hisi_zip_pci_driver);
+ if (ret < 0) {
+ pr_err("Failed to register pci driver.\n");
+ goto err_pci;
+ }
+
+ if (uacce_mode == 0 || uacce_mode == 2) {
+ ret = hisi_zip_register_to_crypto();
+ if (ret < 0) {
+ pr_err("Failed to register driver to crypto.\n");
+ goto err_crypto;
+ }
+ }
+
+ return 0;
+
+err_crypto:
+ pci_unregister_driver(&hisi_zip_pci_driver);
+err_pci:
+ hisi_zip_unregister_debugfs();
+
+ return ret;
+}
+
+static void __exit hisi_zip_exit(void)
+{
+ if (uacce_mode == 0 || uacce_mode == 2)
+ hisi_zip_unregister_from_crypto();
+ pci_unregister_driver(&hisi_zip_pci_driver);
+ hisi_zip_unregister_debugfs();
+}
+
+module_init(hisi_zip_init);
+module_exit(hisi_zip_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Zhou Wang <wangzhou1@hisilicon.com>");
+MODULE_DESCRIPTION("Driver for HiSilicon ZIP accelerator");
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-23 12:37:29 +0000