diff options
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c | 10 | ||||
| -rw-r--r-- | drivers/crypto/qat/qat_common/Makefile | 2 | ||||
| -rw-r--r-- | drivers/crypto/qat/qat_common/adf_gen4_pfvf.c | 148 | ||||
| -rw-r--r-- | drivers/crypto/qat/qat_common/adf_gen4_pfvf.h | 17 | ||||
| -rw-r--r-- | drivers/crypto/qat/qat_common/adf_pfvf_msg.h | 29 |
5 files changed, 196 insertions, 10 deletions
diff --git a/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c b/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c index 67cd20f443ab..ef71aa4efd64 100644 --- a/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c +++ b/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c @@ -4,6 +4,7 @@ #include <adf_accel_devices.h> #include <adf_common_drv.h> #include <adf_gen4_hw_data.h> +#include <adf_gen4_pfvf.h> #include "adf_4xxx_hw_data.h" #include "icp_qat_hw.h" @@ -228,12 +229,6 @@ static u32 uof_get_ae_mask(u32 obj_num) return adf_4xxx_fw_config[obj_num].ae_mask; } -static u32 get_vf2pf_sources(void __iomem *pmisc_addr) -{ - /* For the moment do not report vf2pf sources */ - return 0; -} - void adf_init_hw_data_4xxx(struct adf_hw_device_data *hw_data) { hw_data->dev_class = &adf_4xxx_class; @@ -278,12 +273,11 @@ void adf_init_hw_data_4xxx(struct adf_hw_device_data *hw_data) hw_data->uof_get_ae_mask = uof_get_ae_mask; hw_data->set_msix_rttable = set_msix_default_rttable; hw_data->set_ssm_wdtimer = adf_gen4_set_ssm_wdtimer; - hw_data->pfvf_ops.enable_comms = adf_pfvf_comms_disabled; - hw_data->pfvf_ops.get_vf2pf_sources = get_vf2pf_sources; hw_data->disable_iov = adf_disable_sriov; hw_data->ring_pair_reset = adf_gen4_ring_pair_reset; adf_gen4_init_hw_csr_ops(&hw_data->csr_ops); + adf_gen4_init_pf_pfvf_ops(&hw_data->pfvf_ops); } void adf_clean_hw_data_4xxx(struct adf_hw_device_data *hw_data) diff --git a/drivers/crypto/qat/qat_common/Makefile b/drivers/crypto/qat/qat_common/Makefile index 80f6cb424753..7e191a42a5c7 100644 --- a/drivers/crypto/qat/qat_common/Makefile +++ b/drivers/crypto/qat/qat_common/Makefile @@ -22,4 +22,4 @@ intel_qat-$(CONFIG_DEBUG_FS) += adf_transport_debug.o intel_qat-$(CONFIG_PCI_IOV) += adf_sriov.o adf_vf_isr.o adf_pfvf_utils.o \ adf_pfvf_pf_msg.o adf_pfvf_pf_proto.o \ adf_pfvf_vf_msg.o adf_pfvf_vf_proto.o \ - adf_gen2_pfvf.o + adf_gen2_pfvf.o adf_gen4_pfvf.o diff --git a/drivers/crypto/qat/qat_common/adf_gen4_pfvf.c b/drivers/crypto/qat/qat_common/adf_gen4_pfvf.c new file mode 100644 index 000000000000..8efbedf63bc8 --- /dev/null +++ b/drivers/crypto/qat/qat_common/adf_gen4_pfvf.c @@ -0,0 +1,148 @@ +// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) +/* Copyright(c) 2021 Intel Corporation */ +#include <linux/iopoll.h> +#include <linux/mutex.h> +#include <linux/types.h> +#include "adf_accel_devices.h" +#include "adf_common_drv.h" +#include "adf_gen4_pfvf.h" +#include "adf_pfvf_pf_proto.h" +#include "adf_pfvf_utils.h" + +#define ADF_4XXX_MAX_NUM_VFS 16 + +#define ADF_4XXX_PF2VM_OFFSET(i) (0x40B010 + ((i) * 0x20)) +#define ADF_4XXX_VM2PF_OFFSET(i) (0x40B014 + ((i) * 0x20)) + +/* VF2PF interrupt source registers */ +#define ADF_4XXX_VM2PF_SOU(i) (0x41A180 + ((i) * 4)) +#define ADF_4XXX_VM2PF_MSK(i) (0x41A1C0 + ((i) * 4)) +#define ADF_4XXX_VM2PF_INT_EN_MSK BIT(0) + +#define ADF_PFVF_GEN4_MSGTYPE_SHIFT 2 +#define ADF_PFVF_GEN4_MSGTYPE_MASK 0x3F +#define ADF_PFVF_GEN4_MSGDATA_SHIFT 8 +#define ADF_PFVF_GEN4_MSGDATA_MASK 0xFFFFFF + +static const struct pfvf_csr_format csr_gen4_fmt = { + { ADF_PFVF_GEN4_MSGTYPE_SHIFT, ADF_PFVF_GEN4_MSGTYPE_MASK }, + { ADF_PFVF_GEN4_MSGDATA_SHIFT, ADF_PFVF_GEN4_MSGDATA_MASK }, +}; + +static u32 adf_gen4_pf_get_pf2vf_offset(u32 i) +{ + return ADF_4XXX_PF2VM_OFFSET(i); +} + +static u32 adf_gen4_pf_get_vf2pf_offset(u32 i) +{ + return ADF_4XXX_VM2PF_OFFSET(i); +} + +static u32 adf_gen4_get_vf2pf_sources(void __iomem *pmisc_addr) +{ + int i; + u32 sou, mask; + int num_csrs = ADF_4XXX_MAX_NUM_VFS; + u32 vf_mask = 0; + + for (i = 0; i < num_csrs; i++) { + sou = ADF_CSR_RD(pmisc_addr, ADF_4XXX_VM2PF_SOU(i)); + mask = ADF_CSR_RD(pmisc_addr, ADF_4XXX_VM2PF_MSK(i)); + sou &= ~mask; + vf_mask |= sou << i; + } + + return vf_mask; +} + +static void adf_gen4_enable_vf2pf_interrupts(void __iomem *pmisc_addr, + u32 vf_mask) +{ + int num_csrs = ADF_4XXX_MAX_NUM_VFS; + unsigned long mask = vf_mask; + unsigned int val; + int i; + + for_each_set_bit(i, &mask, num_csrs) { + unsigned int offset = ADF_4XXX_VM2PF_MSK(i); + + val = ADF_CSR_RD(pmisc_addr, offset) & ~ADF_4XXX_VM2PF_INT_EN_MSK; + ADF_CSR_WR(pmisc_addr, offset, val); + } +} + +static void adf_gen4_disable_vf2pf_interrupts(void __iomem *pmisc_addr, + u32 vf_mask) +{ + int num_csrs = ADF_4XXX_MAX_NUM_VFS; + unsigned long mask = vf_mask; + unsigned int val; + int i; + + for_each_set_bit(i, &mask, num_csrs) { + unsigned int offset = ADF_4XXX_VM2PF_MSK(i); + + val = ADF_CSR_RD(pmisc_addr, offset) | ADF_4XXX_VM2PF_INT_EN_MSK; + ADF_CSR_WR(pmisc_addr, offset, val); + } +} + +static int adf_gen4_pfvf_send(struct adf_accel_dev *accel_dev, + struct pfvf_message msg, u32 pfvf_offset, + struct mutex *csr_lock) +{ + void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev); + u32 csr_val; + int ret; + + csr_val = adf_pfvf_csr_msg_of(accel_dev, msg, &csr_gen4_fmt); + if (unlikely(!csr_val)) + return -EINVAL; + + mutex_lock(csr_lock); + + ADF_CSR_WR(pmisc_addr, pfvf_offset, csr_val | ADF_PFVF_INT); + + /* Wait for confirmation from remote that it received the message */ + ret = read_poll_timeout(ADF_CSR_RD, csr_val, !(csr_val & ADF_PFVF_INT), + ADF_PFVF_MSG_ACK_DELAY_US, + ADF_PFVF_MSG_ACK_MAX_DELAY_US, + true, pmisc_addr, pfvf_offset); + if (ret < 0) + dev_dbg(&GET_DEV(accel_dev), "ACK not received from remote\n"); + + mutex_unlock(csr_lock); + return ret; +} + +static struct pfvf_message adf_gen4_pfvf_recv(struct adf_accel_dev *accel_dev, + u32 pfvf_offset, u8 compat_ver) +{ + void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev); + u32 csr_val; + + /* Read message from the CSR */ + csr_val = ADF_CSR_RD(pmisc_addr, pfvf_offset); + + /* We can now acknowledge the message reception by clearing the + * interrupt bit + */ + ADF_CSR_WR(pmisc_addr, pfvf_offset, csr_val & ~ADF_PFVF_INT); + + /* Return the pfvf_message format */ + return adf_pfvf_message_of(accel_dev, csr_val, &csr_gen4_fmt); +} + +void adf_gen4_init_pf_pfvf_ops(struct adf_pfvf_ops *pfvf_ops) +{ + pfvf_ops->enable_comms = adf_enable_pf2vf_comms; + pfvf_ops->get_pf2vf_offset = adf_gen4_pf_get_pf2vf_offset; + pfvf_ops->get_vf2pf_offset = adf_gen4_pf_get_vf2pf_offset; + pfvf_ops->get_vf2pf_sources = adf_gen4_get_vf2pf_sources; + pfvf_ops->enable_vf2pf_interrupts = adf_gen4_enable_vf2pf_interrupts; + pfvf_ops->disable_vf2pf_interrupts = adf_gen4_disable_vf2pf_interrupts; + pfvf_ops->send_msg = adf_gen4_pfvf_send; + pfvf_ops->recv_msg = adf_gen4_pfvf_recv; +} +EXPORT_SYMBOL_GPL(adf_gen4_init_pf_pfvf_ops); diff --git a/drivers/crypto/qat/qat_common/adf_gen4_pfvf.h b/drivers/crypto/qat/qat_common/adf_gen4_pfvf.h new file mode 100644 index 000000000000..17d1b774d4a8 --- /dev/null +++ b/drivers/crypto/qat/qat_common/adf_gen4_pfvf.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) */ +/* Copyright(c) 2021 Intel Corporation */ +#ifndef ADF_GEN4_PFVF_H +#define ADF_GEN4_PFVF_H + +#include "adf_accel_devices.h" + +#ifdef CONFIG_PCI_IOV +void adf_gen4_init_pf_pfvf_ops(struct adf_pfvf_ops *pfvf_ops); +#else +static inline void adf_gen4_init_pf_pfvf_ops(struct adf_pfvf_ops *pfvf_ops) +{ + pfvf_ops->enable_comms = adf_pfvf_comms_disabled; +} +#endif + +#endif /* ADF_GEN4_PFVF_H */ diff --git a/drivers/crypto/qat/qat_common/adf_pfvf_msg.h b/drivers/crypto/qat/qat_common/adf_pfvf_msg.h index 1d3cad7d4999..f00e9e2c585b 100644 --- a/drivers/crypto/qat/qat_common/adf_pfvf_msg.h +++ b/drivers/crypto/qat/qat_common/adf_pfvf_msg.h @@ -6,7 +6,8 @@ #include <linux/bits.h> /* - * PF<->VF Messaging + * PF<->VF Gen2 Messaging format + * * The PF has an array of 32-bit PF2VF registers, one for each VF. The * PF can access all these registers; each VF can access only the one * register associated with that particular VF. @@ -53,6 +54,32 @@ * respectively, the other 16 bits are written to first with a defined * IN_USE_BY pattern as part of a collision control scheme (see function * adf_gen2_pfvf_send() in adf_pf2vf_msg.c). + * + * + * PF<->VF Gen4 Messaging format + * + * Similarly to the gen2 messaging format, 32-bit long registers are used for + * communication between PF and VFs. However, each VF and PF share a pair of + * 32-bits register to avoid collisions: one for PV to VF messages and one + * for VF to PF messages. + * + * Both the Interrupt bit and the Message Origin bit retain the same position + * and meaning, although non-system messages are now deprecated and not + * expected. + * + * 31 30 9 8 7 6 5 4 3 2 1 0 + * _______________________________________________ + * | | | . . . | | | | | | | | | | | + * +-----------------------------------------------+ + * \_____________________/ \_______________/ ^ ^ + * ^ ^ | | + * | | | PF/VF Int + * | | Message Origin + * | Message Type + * Message-specific Data/Reserved + * + * For both formats, the message reception is acknowledged by lowering the + * interrupt bit on the register where the message was sent. */ /* PFVF message common bits */ |