diff options
Diffstat (limited to 'drivers/net/wwan/t7xx/t7xx_dpmaif.c')
| -rw-r--r-- | drivers/net/wwan/t7xx/t7xx_dpmaif.c | 1281 |
1 files changed, 1281 insertions, 0 deletions
diff --git a/drivers/net/wwan/t7xx/t7xx_dpmaif.c b/drivers/net/wwan/t7xx/t7xx_dpmaif.c new file mode 100644 index 000000000..6d3edadec --- /dev/null +++ b/drivers/net/wwan/t7xx/t7xx_dpmaif.c @@ -0,0 +1,1281 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2021, MediaTek Inc. + * Copyright (c) 2021-2022, Intel Corporation. + * + * Authors: + * Amir Hanania <amir.hanania@intel.com> + * Haijun Liu <haijun.liu@mediatek.com> + * Moises Veleta <moises.veleta@intel.com> + * Ricardo Martinez <ricardo.martinez@linux.intel.com> + * + * Contributors: + * Andy Shevchenko <andriy.shevchenko@linux.intel.com> + * Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com> + * Eliot Lee <eliot.lee@intel.com> + * Sreehari Kancharla <sreehari.kancharla@intel.com> + */ + +#include <linux/bits.h> +#include <linux/bitfield.h> +#include <linux/bitops.h> +#include <linux/delay.h> +#include <linux/dev_printk.h> +#include <linux/io.h> +#include <linux/iopoll.h> +#include <linux/types.h> + +#include "t7xx_dpmaif.h" +#include "t7xx_reg.h" + +#define ioread32_poll_timeout_atomic(addr, val, cond, delay_us, timeout_us) \ + readx_poll_timeout_atomic(ioread32, addr, val, cond, delay_us, timeout_us) + +static int t7xx_dpmaif_init_intr(struct dpmaif_hw_info *hw_info) +{ + struct dpmaif_isr_en_mask *isr_en_msk = &hw_info->isr_en_mask; + u32 value, ul_intr_enable, dl_intr_enable; + int ret; + + ul_intr_enable = DP_UL_INT_ERR_MSK | DP_UL_INT_QDONE_MSK; + isr_en_msk->ap_ul_l2intr_en_msk = ul_intr_enable; + iowrite32(DPMAIF_AP_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_L2TISAR0); + + /* Set interrupt enable mask */ + iowrite32(ul_intr_enable, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMCR0); + iowrite32(~ul_intr_enable, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMSR0); + + /* Check mask status */ + ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0, + value, (value & ul_intr_enable) != ul_intr_enable, 0, + DPMAIF_CHECK_INIT_TIMEOUT_US); + if (ret) + return ret; + + dl_intr_enable = DP_DL_INT_PITCNT_LEN_ERR | DP_DL_INT_BATCNT_LEN_ERR; + isr_en_msk->ap_dl_l2intr_err_en_msk = dl_intr_enable; + ul_intr_enable = DPMAIF_DL_INT_DLQ0_QDONE | DPMAIF_DL_INT_DLQ0_PITCNT_LEN | + DPMAIF_DL_INT_DLQ1_QDONE | DPMAIF_DL_INT_DLQ1_PITCNT_LEN; + isr_en_msk->ap_ul_l2intr_en_msk = ul_intr_enable; + iowrite32(DPMAIF_AP_APDL_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0); + + /* Set DL ISR PD enable mask */ + iowrite32(~ul_intr_enable, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0); + ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMR0, + value, (value & ul_intr_enable) != ul_intr_enable, 0, + DPMAIF_CHECK_INIT_TIMEOUT_US); + if (ret) + return ret; + + isr_en_msk->ap_udl_ip_busy_en_msk = DPMAIF_UDL_IP_BUSY; + iowrite32(DPMAIF_AP_IP_BUSY_MASK, hw_info->pcie_base + DPMAIF_AP_IP_BUSY); + iowrite32(isr_en_msk->ap_udl_ip_busy_en_msk, + hw_info->pcie_base + DPMAIF_AO_AP_DLUL_IP_BUSY_MASK); + value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_AP_L1TIMR0); + value |= DPMAIF_DL_INT_Q2APTOP | DPMAIF_DL_INT_Q2TOQ1; + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_UL_AP_L1TIMR0); + iowrite32(DPMA_HPC_ALL_INT_MASK, hw_info->pcie_base + DPMAIF_HPC_INTR_MASK); + + return 0; +} + +static void t7xx_dpmaif_mask_ulq_intr(struct dpmaif_hw_info *hw_info, unsigned int q_num) +{ + struct dpmaif_isr_en_mask *isr_en_msk; + u32 value, ul_int_que_done; + int ret; + + isr_en_msk = &hw_info->isr_en_mask; + ul_int_que_done = BIT(q_num + DP_UL_INT_DONE_OFFSET) & DP_UL_INT_QDONE_MSK; + isr_en_msk->ap_ul_l2intr_en_msk &= ~ul_int_que_done; + iowrite32(ul_int_que_done, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMSR0); + + ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0, + value, (value & ul_int_que_done) == ul_int_que_done, 0, + DPMAIF_CHECK_TIMEOUT_US); + if (ret) + dev_err(hw_info->dev, + "Could not mask the UL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0x%x\n", + value); +} + +void t7xx_dpmaif_unmask_ulq_intr(struct dpmaif_hw_info *hw_info, unsigned int q_num) +{ + struct dpmaif_isr_en_mask *isr_en_msk; + u32 value, ul_int_que_done; + int ret; + + isr_en_msk = &hw_info->isr_en_mask; + ul_int_que_done = BIT(q_num + DP_UL_INT_DONE_OFFSET) & DP_UL_INT_QDONE_MSK; + isr_en_msk->ap_ul_l2intr_en_msk |= ul_int_que_done; + iowrite32(ul_int_que_done, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMCR0); + + ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0, + value, (value & ul_int_que_done) != ul_int_que_done, 0, + DPMAIF_CHECK_TIMEOUT_US); + if (ret) + dev_err(hw_info->dev, + "Could not unmask the UL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0x%x\n", + value); +} + +void t7xx_dpmaif_dl_unmask_batcnt_len_err_intr(struct dpmaif_hw_info *hw_info) +{ + hw_info->isr_en_mask.ap_dl_l2intr_en_msk |= DP_DL_INT_BATCNT_LEN_ERR; + iowrite32(DP_DL_INT_BATCNT_LEN_ERR, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0); +} + +void t7xx_dpmaif_dl_unmask_pitcnt_len_err_intr(struct dpmaif_hw_info *hw_info) +{ + hw_info->isr_en_mask.ap_dl_l2intr_en_msk |= DP_DL_INT_PITCNT_LEN_ERR; + iowrite32(DP_DL_INT_PITCNT_LEN_ERR, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0); +} + +static u32 t7xx_update_dlq_intr(struct dpmaif_hw_info *hw_info, u32 q_done) +{ + u32 value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0); + iowrite32(q_done, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0); + return value; +} + +static int t7xx_mask_dlq_intr(struct dpmaif_hw_info *hw_info, unsigned int qno) +{ + u32 value, q_done; + int ret; + + q_done = qno == DPF_RX_QNO0 ? DPMAIF_DL_INT_DLQ0_QDONE : DPMAIF_DL_INT_DLQ1_QDONE; + iowrite32(q_done, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0); + + ret = read_poll_timeout_atomic(t7xx_update_dlq_intr, value, value & q_done, + 0, DPMAIF_CHECK_TIMEOUT_US, false, hw_info, q_done); + if (ret) { + dev_err(hw_info->dev, + "Could not mask the DL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0x%x\n", + value); + return -ETIMEDOUT; + } + + hw_info->isr_en_mask.ap_dl_l2intr_en_msk &= ~q_done; + return 0; +} + +void t7xx_dpmaif_dlq_unmask_rx_done(struct dpmaif_hw_info *hw_info, unsigned int qno) +{ + u32 mask; + + mask = qno == DPF_RX_QNO0 ? DPMAIF_DL_INT_DLQ0_QDONE : DPMAIF_DL_INT_DLQ1_QDONE; + iowrite32(mask, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0); + hw_info->isr_en_mask.ap_dl_l2intr_en_msk |= mask; +} + +void t7xx_dpmaif_clr_ip_busy_sts(struct dpmaif_hw_info *hw_info) +{ + u32 ip_busy_sts; + + ip_busy_sts = ioread32(hw_info->pcie_base + DPMAIF_AP_IP_BUSY); + iowrite32(ip_busy_sts, hw_info->pcie_base + DPMAIF_AP_IP_BUSY); +} + +static void t7xx_dpmaif_dlq_mask_rx_pitcnt_len_err_intr(struct dpmaif_hw_info *hw_info, + unsigned int qno) +{ + if (qno == DPF_RX_QNO0) + iowrite32(DPMAIF_DL_INT_DLQ0_PITCNT_LEN, + hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0); + else + iowrite32(DPMAIF_DL_INT_DLQ1_PITCNT_LEN, + hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0); +} + +void t7xx_dpmaif_dlq_unmask_pitcnt_len_err_intr(struct dpmaif_hw_info *hw_info, + unsigned int qno) +{ + if (qno == DPF_RX_QNO0) + iowrite32(DPMAIF_DL_INT_DLQ0_PITCNT_LEN, + hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0); + else + iowrite32(DPMAIF_DL_INT_DLQ1_PITCNT_LEN, + hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0); +} + +void t7xx_dpmaif_ul_clr_all_intr(struct dpmaif_hw_info *hw_info) +{ + iowrite32(DPMAIF_AP_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_L2TISAR0); +} + +void t7xx_dpmaif_dl_clr_all_intr(struct dpmaif_hw_info *hw_info) +{ + iowrite32(DPMAIF_AP_APDL_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0); +} + +static void t7xx_dpmaif_set_intr_para(struct dpmaif_hw_intr_st_para *para, + enum dpmaif_hw_intr_type intr_type, unsigned int intr_queue) +{ + para->intr_types[para->intr_cnt] = intr_type; + para->intr_queues[para->intr_cnt] = intr_queue; + para->intr_cnt++; +} + +/* The para->intr_cnt counter is set to zero before this function is called. + * It does not check for overflow as there is no risk of overflowing intr_types or intr_queues. + */ +static void t7xx_dpmaif_hw_check_tx_intr(struct dpmaif_hw_info *hw_info, + unsigned int intr_status, + struct dpmaif_hw_intr_st_para *para) +{ + unsigned long value; + + value = FIELD_GET(DP_UL_INT_QDONE_MSK, intr_status); + if (value) { + unsigned int index; + + t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_DONE, value); + + for_each_set_bit(index, &value, DPMAIF_TXQ_NUM) + t7xx_dpmaif_mask_ulq_intr(hw_info, index); + } + + value = FIELD_GET(DP_UL_INT_EMPTY_MSK, intr_status); + if (value) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_DRB_EMPTY, value); + + value = FIELD_GET(DP_UL_INT_MD_NOTREADY_MSK, intr_status); + if (value) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_MD_NOTREADY, value); + + value = FIELD_GET(DP_UL_INT_MD_PWR_NOTREADY_MSK, intr_status); + if (value) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_MD_PWR_NOTREADY, value); + + value = FIELD_GET(DP_UL_INT_ERR_MSK, intr_status); + if (value) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_LEN_ERR, value); + + /* Clear interrupt status */ + iowrite32(intr_status, hw_info->pcie_base + DPMAIF_AP_L2TISAR0); +} + +/* The para->intr_cnt counter is set to zero before this function is called. + * It does not check for overflow as there is no risk of overflowing intr_types or intr_queues. + */ +static void t7xx_dpmaif_hw_check_rx_intr(struct dpmaif_hw_info *hw_info, + unsigned int intr_status, + struct dpmaif_hw_intr_st_para *para, int qno) +{ + if (qno == DPF_RX_QNO_DFT) { + if (intr_status & DP_DL_INT_SKB_LEN_ERR) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_SKB_LEN_ERR, DPF_RX_QNO_DFT); + + if (intr_status & DP_DL_INT_BATCNT_LEN_ERR) { + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_BATCNT_LEN_ERR, DPF_RX_QNO_DFT); + hw_info->isr_en_mask.ap_dl_l2intr_en_msk &= ~DP_DL_INT_BATCNT_LEN_ERR; + iowrite32(DP_DL_INT_BATCNT_LEN_ERR, + hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0); + } + + if (intr_status & DP_DL_INT_PITCNT_LEN_ERR) { + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_PITCNT_LEN_ERR, DPF_RX_QNO_DFT); + hw_info->isr_en_mask.ap_dl_l2intr_en_msk &= ~DP_DL_INT_PITCNT_LEN_ERR; + iowrite32(DP_DL_INT_PITCNT_LEN_ERR, + hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0); + } + + if (intr_status & DP_DL_INT_PKT_EMPTY_MSK) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_PKT_EMPTY_SET, DPF_RX_QNO_DFT); + + if (intr_status & DP_DL_INT_FRG_EMPTY_MSK) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_FRG_EMPTY_SET, DPF_RX_QNO_DFT); + + if (intr_status & DP_DL_INT_MTU_ERR_MSK) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_MTU_ERR, DPF_RX_QNO_DFT); + + if (intr_status & DP_DL_INT_FRG_LEN_ERR_MSK) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_FRGCNT_LEN_ERR, DPF_RX_QNO_DFT); + + if (intr_status & DP_DL_INT_Q0_PITCNT_LEN_ERR) { + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q0_PITCNT_LEN_ERR, BIT(qno)); + t7xx_dpmaif_dlq_mask_rx_pitcnt_len_err_intr(hw_info, qno); + } + + if (intr_status & DP_DL_INT_HPC_ENT_TYPE_ERR) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_HPC_ENT_TYPE_ERR, + DPF_RX_QNO_DFT); + + if (intr_status & DP_DL_INT_Q0_DONE) { + /* Mask RX done interrupt immediately after it occurs, do not clear + * the interrupt if the mask operation fails. + */ + if (!t7xx_mask_dlq_intr(hw_info, qno)) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q0_DONE, BIT(qno)); + else + intr_status &= ~DP_DL_INT_Q0_DONE; + } + } else { + if (intr_status & DP_DL_INT_Q1_PITCNT_LEN_ERR) { + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q1_PITCNT_LEN_ERR, BIT(qno)); + t7xx_dpmaif_dlq_mask_rx_pitcnt_len_err_intr(hw_info, qno); + } + + if (intr_status & DP_DL_INT_Q1_DONE) { + if (!t7xx_mask_dlq_intr(hw_info, qno)) + t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q1_DONE, BIT(qno)); + else + intr_status &= ~DP_DL_INT_Q1_DONE; + } + } + + intr_status |= DP_DL_INT_BATCNT_LEN_ERR; + /* Clear interrupt status */ + iowrite32(intr_status, hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0); +} + +/** + * t7xx_dpmaif_hw_get_intr_cnt() - Reads interrupt status and count from HW. + * @hw_info: Pointer to struct hw_info. + * @para: Pointer to struct dpmaif_hw_intr_st_para. + * @qno: Queue number. + * + * Reads RX/TX interrupt status from HW and clears UL/DL status as needed. + * + * Return: Interrupt count. + */ +int t7xx_dpmaif_hw_get_intr_cnt(struct dpmaif_hw_info *hw_info, + struct dpmaif_hw_intr_st_para *para, int qno) +{ + u32 rx_intr_status, tx_intr_status = 0; + u32 rx_intr_qdone, tx_intr_qdone = 0; + + rx_intr_status = ioread32(hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0); + rx_intr_qdone = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMR0); + + /* TX interrupt status */ + if (qno == DPF_RX_QNO_DFT) { + /* All ULQ and DLQ0 interrupts use the same source no need to check ULQ interrupts + * when a DLQ1 interrupt has occurred. + */ + tx_intr_status = ioread32(hw_info->pcie_base + DPMAIF_AP_L2TISAR0); + tx_intr_qdone = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0); + } + + t7xx_dpmaif_clr_ip_busy_sts(hw_info); + + if (qno == DPF_RX_QNO_DFT) { + /* Do not schedule bottom half again or clear UL interrupt status when we + * have already masked it. + */ + tx_intr_status &= ~tx_intr_qdone; + if (tx_intr_status) + t7xx_dpmaif_hw_check_tx_intr(hw_info, tx_intr_status, para); + } + + if (rx_intr_status) { + if (qno == DPF_RX_QNO0) { + rx_intr_status &= DP_DL_Q0_STATUS_MASK; + if (rx_intr_qdone & DPMAIF_DL_INT_DLQ0_QDONE) + /* Do not schedule bottom half again or clear DL + * queue done interrupt status when we have already masked it. + */ + rx_intr_status &= ~DP_DL_INT_Q0_DONE; + } else { + rx_intr_status &= DP_DL_Q1_STATUS_MASK; + if (rx_intr_qdone & DPMAIF_DL_INT_DLQ1_QDONE) + rx_intr_status &= ~DP_DL_INT_Q1_DONE; + } + + if (rx_intr_status) + t7xx_dpmaif_hw_check_rx_intr(hw_info, rx_intr_status, para, qno); + } + + return para->intr_cnt; +} + +static int t7xx_dpmaif_sram_init(struct dpmaif_hw_info *hw_info) +{ + u32 value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AP_MEM_CLR); + value |= DPMAIF_MEM_CLR; + iowrite32(value, hw_info->pcie_base + DPMAIF_AP_MEM_CLR); + + return ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AP_MEM_CLR, + value, !(value & DPMAIF_MEM_CLR), 0, + DPMAIF_CHECK_INIT_TIMEOUT_US); +} + +static void t7xx_dpmaif_hw_reset(struct dpmaif_hw_info *hw_info) +{ + iowrite32(DPMAIF_AP_AO_RST_BIT, hw_info->pcie_base + DPMAIF_AP_AO_RGU_ASSERT); + udelay(2); + iowrite32(DPMAIF_AP_RST_BIT, hw_info->pcie_base + DPMAIF_AP_RGU_ASSERT); + udelay(2); + iowrite32(DPMAIF_AP_AO_RST_BIT, hw_info->pcie_base + DPMAIF_AP_AO_RGU_DEASSERT); + udelay(2); + iowrite32(DPMAIF_AP_RST_BIT, hw_info->pcie_base + DPMAIF_AP_RGU_DEASSERT); + udelay(2); +} + +static int t7xx_dpmaif_hw_config(struct dpmaif_hw_info *hw_info) +{ + u32 ap_port_mode; + int ret; + + t7xx_dpmaif_hw_reset(hw_info); + + ret = t7xx_dpmaif_sram_init(hw_info); + if (ret) + return ret; + + ap_port_mode = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES); + ap_port_mode |= DPMAIF_PORT_MODE_PCIE; + iowrite32(ap_port_mode, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES); + iowrite32(DPMAIF_CG_EN, hw_info->pcie_base + DPMAIF_AP_CG_EN); + return 0; +} + +static void t7xx_dpmaif_pcie_dpmaif_sign(struct dpmaif_hw_info *hw_info) +{ + iowrite32(DPMAIF_PCIE_MODE_SET_VALUE, hw_info->pcie_base + DPMAIF_UL_RESERVE_AO_RW); +} + +static void t7xx_dpmaif_dl_performance(struct dpmaif_hw_info *hw_info) +{ + u32 enable_bat_cache, enable_pit_burst; + + enable_bat_cache = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1); + enable_bat_cache |= DPMAIF_DL_BAT_CACHE_PRI; + iowrite32(enable_bat_cache, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1); + + enable_pit_burst = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES); + enable_pit_burst |= DPMAIF_DL_BURST_PIT_EN; + iowrite32(enable_pit_burst, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES); +} + + /* DPMAIF DL DLQ part HW setting */ + +static void t7xx_dpmaif_hw_hpc_cntl_set(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = DPMAIF_HPC_DLQ_PATH_MODE | DPMAIF_HPC_ADD_MODE_DF << 2; + value |= DPMAIF_HASH_PRIME_DF << 4; + value |= DPMAIF_HPC_TOTAL_NUM << 8; + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_HPC_CNTL); +} + +static void t7xx_dpmaif_hw_agg_cfg_set(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = DPMAIF_AGG_MAX_LEN_DF | DPMAIF_AGG_TBL_ENT_NUM_DF << 16; + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_DLQ_AGG_CFG); +} + +static void t7xx_dpmaif_hw_hash_bit_choose_set(struct dpmaif_hw_info *hw_info) +{ + iowrite32(DPMAIF_DLQ_HASH_BIT_CHOOSE_DF, + hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_INIT_CON5); +} + +static void t7xx_dpmaif_hw_mid_pit_timeout_thres_set(struct dpmaif_hw_info *hw_info) +{ + iowrite32(DPMAIF_MID_TIMEOUT_THRES_DF, hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_TIMEOUT0); +} + +static void t7xx_dpmaif_hw_dlq_timeout_thres_set(struct dpmaif_hw_info *hw_info) +{ + unsigned int value, i; + + /* Each register holds two DLQ threshold timeout values */ + for (i = 0; i < DPMAIF_HPC_MAX_TOTAL_NUM / 2; i++) { + value = FIELD_PREP(DPMAIF_DLQ_LOW_TIMEOUT_THRES_MKS, DPMAIF_DLQ_TIMEOUT_THRES_DF); + value |= FIELD_PREP(DPMAIF_DLQ_HIGH_TIMEOUT_THRES_MSK, + DPMAIF_DLQ_TIMEOUT_THRES_DF); + iowrite32(value, + hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_TIMEOUT1 + sizeof(u32) * i); + } +} + +static void t7xx_dpmaif_hw_dlq_start_prs_thres_set(struct dpmaif_hw_info *hw_info) +{ + iowrite32(DPMAIF_DLQ_PRS_THRES_DF, hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_TRIG_THRES); +} + +static void t7xx_dpmaif_dl_dlq_hpc_hw_init(struct dpmaif_hw_info *hw_info) +{ + t7xx_dpmaif_hw_hpc_cntl_set(hw_info); + t7xx_dpmaif_hw_agg_cfg_set(hw_info); + t7xx_dpmaif_hw_hash_bit_choose_set(hw_info); + t7xx_dpmaif_hw_mid_pit_timeout_thres_set(hw_info); + t7xx_dpmaif_hw_dlq_timeout_thres_set(hw_info); + t7xx_dpmaif_hw_dlq_start_prs_thres_set(hw_info); +} + +static int t7xx_dpmaif_dl_bat_init_done(struct dpmaif_hw_info *hw_info, bool frg_en) +{ + u32 value, dl_bat_init = 0; + int ret; + + if (frg_en) + dl_bat_init = DPMAIF_DL_BAT_FRG_INIT; + + dl_bat_init |= DPMAIF_DL_BAT_INIT_ALLSET; + dl_bat_init |= DPMAIF_DL_BAT_INIT_EN; + + ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT, + value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0, + DPMAIF_CHECK_INIT_TIMEOUT_US); + if (ret) { + dev_err(hw_info->dev, "Data plane modem DL BAT is not ready\n"); + return ret; + } + + iowrite32(dl_bat_init, hw_info->pcie_base + DPMAIF_DL_BAT_INIT); + + ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT, + value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0, + DPMAIF_CHECK_INIT_TIMEOUT_US); + if (ret) + dev_err(hw_info->dev, "Data plane modem DL BAT initialization failed\n"); + + return ret; +} + +static void t7xx_dpmaif_dl_set_bat_base_addr(struct dpmaif_hw_info *hw_info, + dma_addr_t addr) +{ + iowrite32(lower_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON0); + iowrite32(upper_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON3); +} + +static void t7xx_dpmaif_dl_set_bat_size(struct dpmaif_hw_info *hw_info, unsigned int size) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1); + value &= ~DPMAIF_BAT_SIZE_MSK; + value |= size & DPMAIF_BAT_SIZE_MSK; + iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1); +} + +static void t7xx_dpmaif_dl_bat_en(struct dpmaif_hw_info *hw_info, bool enable) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1); + + if (enable) + value |= DPMAIF_BAT_EN_MSK; + else + value &= ~DPMAIF_BAT_EN_MSK; + + iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1); +} + +static void t7xx_dpmaif_dl_set_ao_bid_maxcnt(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0); + value &= ~DPMAIF_BAT_BID_MAXCNT_MSK; + value |= FIELD_PREP(DPMAIF_BAT_BID_MAXCNT_MSK, DPMAIF_HW_PKT_BIDCNT); + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0); +} + +static void t7xx_dpmaif_dl_set_ao_mtu(struct dpmaif_hw_info *hw_info) +{ + iowrite32(DPMAIF_HW_MTU_SIZE, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON1); +} + +static void t7xx_dpmaif_dl_set_ao_pit_chknum(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2); + value &= ~DPMAIF_PIT_CHK_NUM_MSK; + value |= FIELD_PREP(DPMAIF_PIT_CHK_NUM_MSK, DPMAIF_HW_CHK_PIT_NUM); + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2); +} + +static void t7xx_dpmaif_dl_set_ao_remain_minsz(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0); + value &= ~DPMAIF_BAT_REMAIN_MINSZ_MSK; + value |= FIELD_PREP(DPMAIF_BAT_REMAIN_MINSZ_MSK, + DPMAIF_HW_BAT_REMAIN / DPMAIF_BAT_REMAIN_SZ_BASE); + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0); +} + +static void t7xx_dpmaif_dl_set_ao_bat_bufsz(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2); + value &= ~DPMAIF_BAT_BUF_SZ_MSK; + value |= FIELD_PREP(DPMAIF_BAT_BUF_SZ_MSK, + DPMAIF_HW_BAT_PKTBUF / DPMAIF_BAT_BUFFER_SZ_BASE); + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2); +} + +static void t7xx_dpmaif_dl_set_ao_bat_rsv_length(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2); + value &= ~DPMAIF_BAT_RSV_LEN_MSK; + value |= DPMAIF_HW_BAT_RSVLEN; + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2); +} + +static void t7xx_dpmaif_dl_set_pkt_alignment(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES); + value &= ~DPMAIF_PKT_ALIGN_MSK; + value |= DPMAIF_PKT_ALIGN_EN; + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES); +} + +static void t7xx_dpmaif_dl_set_pkt_checksum(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES); + value |= DPMAIF_DL_PKT_CHECKSUM_EN; + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES); +} + +static void t7xx_dpmaif_dl_set_ao_frg_check_thres(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES); + value &= ~DPMAIF_FRG_CHECK_THRES_MSK; + value |= DPMAIF_HW_CHK_FRG_NUM; + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES); +} + +static void t7xx_dpmaif_dl_set_ao_frg_bufsz(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES); + value &= ~DPMAIF_FRG_BUF_SZ_MSK; + value |= FIELD_PREP(DPMAIF_FRG_BUF_SZ_MSK, + DPMAIF_HW_FRG_PKTBUF / DPMAIF_FRG_BUFFER_SZ_BASE); + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES); +} + +static void t7xx_dpmaif_dl_frg_ao_en(struct dpmaif_hw_info *hw_info, bool enable) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES); + + if (enable) + value |= DPMAIF_FRG_EN_MSK; + else + value &= ~DPMAIF_FRG_EN_MSK; + + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES); +} + +static void t7xx_dpmaif_dl_set_ao_bat_check_thres(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES); + value &= ~DPMAIF_BAT_CHECK_THRES_MSK; + value |= FIELD_PREP(DPMAIF_BAT_CHECK_THRES_MSK, DPMAIF_HW_CHK_BAT_NUM); + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES); +} + +static void t7xx_dpmaif_dl_set_pit_seqnum(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PIT_SEQ_END); + value &= ~DPMAIF_DL_PIT_SEQ_MSK; + value |= DPMAIF_DL_PIT_SEQ_VALUE; + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PIT_SEQ_END); +} + +static void t7xx_dpmaif_dl_set_dlq_pit_base_addr(struct dpmaif_hw_info *hw_info, + dma_addr_t addr) +{ + iowrite32(lower_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON0); + iowrite32(upper_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON4); +} + +static void t7xx_dpmaif_dl_set_dlq_pit_size(struct dpmaif_hw_info *hw_info, unsigned int size) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON1); + value &= ~DPMAIF_PIT_SIZE_MSK; + value |= size & DPMAIF_PIT_SIZE_MSK; + iowrite32(value, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON1); + iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON2); + iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON3); + iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON5); + iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON6); +} + +static void t7xx_dpmaif_dl_dlq_pit_en(struct dpmaif_hw_info *hw_info) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON3); + value |= DPMAIF_DLQPIT_EN_MSK; + iowrite32(value, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON3); +} + +static void t7xx_dpmaif_dl_dlq_pit_init_done(struct dpmaif_hw_info *hw_info, + unsigned int pit_idx) +{ + unsigned int dl_pit_init; + int timeout; + u32 value; + + dl_pit_init = DPMAIF_DL_PIT_INIT_ALLSET; + dl_pit_init |= (pit_idx << DPMAIF_DLQPIT_CHAN_OFS); + dl_pit_init |= DPMAIF_DL_PIT_INIT_EN; + + timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT, + value, !(value & DPMAIF_DL_PIT_INIT_NOT_READY), + DPMAIF_CHECK_DELAY_US, + DPMAIF_CHECK_INIT_TIMEOUT_US); + if (timeout) { + dev_err(hw_info->dev, "Data plane modem DL PIT is not ready\n"); + return; + } + + iowrite32(dl_pit_init, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT); + timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT, + value, !(value & DPMAIF_DL_PIT_INIT_NOT_READY), + DPMAIF_CHECK_DELAY_US, + DPMAIF_CHECK_INIT_TIMEOUT_US); + if (timeout) + dev_err(hw_info->dev, "Data plane modem DL PIT initialization failed\n"); +} + +static void t7xx_dpmaif_config_dlq_pit_hw(struct dpmaif_hw_info *hw_info, unsigned int q_num, + struct dpmaif_dl *dl_que) +{ + t7xx_dpmaif_dl_set_dlq_pit_base_addr(hw_info, dl_que->pit_base); + t7xx_dpmaif_dl_set_dlq_pit_size(hw_info, dl_que->pit_size_cnt); + t7xx_dpmaif_dl_dlq_pit_en(hw_info); + t7xx_dpmaif_dl_dlq_pit_init_done(hw_info, q_num); +} + +static void t7xx_dpmaif_config_all_dlq_hw(struct dpmaif_hw_info *hw_info) +{ + int i; + + for (i = 0; i < DPMAIF_RXQ_NUM; i++) + t7xx_dpmaif_config_dlq_pit_hw(hw_info, i, &hw_info->dl_que[i]); +} + +static void t7xx_dpmaif_dl_all_q_en(struct dpmaif_hw_info *hw_info, bool enable) +{ + u32 dl_bat_init, value; + int timeout; + + value = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1); + + if (enable) + value |= DPMAIF_BAT_EN_MSK; + else + value &= ~DPMAIF_BAT_EN_MSK; + + iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1); + dl_bat_init = DPMAIF_DL_BAT_INIT_ONLY_ENABLE_BIT; + dl_bat_init |= DPMAIF_DL_BAT_INIT_EN; + + timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT, + value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0, + DPMAIF_CHECK_TIMEOUT_US); + if (timeout) + dev_err(hw_info->dev, "Timeout updating BAT setting to HW\n"); + + iowrite32(dl_bat_init, hw_info->pcie_base + DPMAIF_DL_BAT_INIT); + timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT, + value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0, + DPMAIF_CHECK_TIMEOUT_US); + if (timeout) + dev_err(hw_info->dev, "Data plane modem DL BAT is not ready\n"); +} + +static int t7xx_dpmaif_config_dlq_hw(struct dpmaif_hw_info *hw_info) +{ + struct dpmaif_dl *dl_que; + int ret; + + t7xx_dpmaif_dl_dlq_hpc_hw_init(hw_info); + + dl_que = &hw_info->dl_que[0]; /* All queues share one BAT/frag BAT table */ + if (!dl_que->que_started) + return -EBUSY; + + t7xx_dpmaif_dl_set_ao_remain_minsz(hw_info); + t7xx_dpmaif_dl_set_ao_bat_bufsz(hw_info); + t7xx_dpmaif_dl_set_ao_frg_bufsz(hw_info); + t7xx_dpmaif_dl_set_ao_bat_rsv_length(hw_info); + t7xx_dpmaif_dl_set_ao_bid_maxcnt(hw_info); + t7xx_dpmaif_dl_set_pkt_alignment(hw_info); + t7xx_dpmaif_dl_set_pit_seqnum(hw_info); + t7xx_dpmaif_dl_set_ao_mtu(hw_info); + t7xx_dpmaif_dl_set_ao_pit_chknum(hw_info); + t7xx_dpmaif_dl_set_ao_bat_check_thres(hw_info); + t7xx_dpmaif_dl_set_ao_frg_check_thres(hw_info); + t7xx_dpmaif_dl_frg_ao_en(hw_info, true); + + t7xx_dpmaif_dl_set_bat_base_addr(hw_info, dl_que->frg_base); + t7xx_dpmaif_dl_set_bat_size(hw_info, dl_que->frg_size_cnt); + t7xx_dpmaif_dl_bat_en(hw_info, true); + + ret = t7xx_dpmaif_dl_bat_init_done(hw_info, true); + if (ret) + return ret; + + t7xx_dpmaif_dl_set_bat_base_addr(hw_info, dl_que->bat_base); + t7xx_dpmaif_dl_set_bat_size(hw_info, dl_que->bat_size_cnt); + t7xx_dpmaif_dl_bat_en(hw_info, false); + + ret = t7xx_dpmaif_dl_bat_init_done(hw_info, false); + if (ret) + return ret; + + /* Init PIT (two PIT table) */ + t7xx_dpmaif_config_all_dlq_hw(hw_info); + t7xx_dpmaif_dl_all_q_en(hw_info, true); + t7xx_dpmaif_dl_set_pkt_checksum(hw_info); + return 0; +} + +static void t7xx_dpmaif_ul_update_drb_size(struct dpmaif_hw_info *hw_info, + unsigned int q_num, unsigned int size) +{ + unsigned int value; + + value = ioread32(hw_info->pcie_base + DPMAIF_UL_DRBSIZE_ADDRH_n(q_num)); + value &= ~DPMAIF_DRB_SIZE_MSK; + value |= size & DPMAIF_DRB_SIZE_MSK; + iowrite32(value, hw_info->pcie_base + DPMAIF_UL_DRBSIZE_ADDRH_n(q_num)); +} + +static void t7xx_dpmaif_ul_update_drb_base_addr(struct dpmaif_hw_info *hw_info, + unsigned int q_num, dma_addr_t addr) +{ + iowrite32(lower_32_bits(addr), hw_info->pcie_base + DPMAIF_ULQSAR_n(q_num)); + iowrite32(upper_32_bits(addr), hw_info->pcie_base + DPMAIF_UL_DRB_ADDRH_n(q_num)); +} + +static void t7xx_dpmaif_ul_rdy_en(struct dpmaif_hw_info *hw_info, + unsigned int q_num, bool ready) +{ + u32 value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0); + + if (ready) + value |= BIT(q_num); + else + value &= ~BIT(q_num); + + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0); +} + +static void t7xx_dpmaif_ul_arb_en(struct dpmaif_hw_info *hw_info, + unsigned int q_num, bool enable) +{ + u32 value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0); + + if (enable) + value |= BIT(q_num + 8); + else + value &= ~BIT(q_num + 8); + + iowrite32(value, hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0); +} + +static void t7xx_dpmaif_config_ulq_hw(struct dpmaif_hw_info *hw_info) +{ + struct dpmaif_ul *ul_que; + int i; + + for (i = 0; i < DPMAIF_TXQ_NUM; i++) { + ul_que = &hw_info->ul_que[i]; + if (ul_que->que_started) { + t7xx_dpmaif_ul_update_drb_size(hw_info, i, ul_que->drb_size_cnt * + DPMAIF_UL_DRB_SIZE_WORD); + t7xx_dpmaif_ul_update_drb_base_addr(hw_info, i, ul_que->drb_base); + t7xx_dpmaif_ul_rdy_en(hw_info, i, true); + t7xx_dpmaif_ul_arb_en(hw_info, i, true); + } else { + t7xx_dpmaif_ul_arb_en(hw_info, i, false); + } + } +} + +static int t7xx_dpmaif_hw_init_done(struct dpmaif_hw_info *hw_info) +{ + u32 ap_cfg; + int ret; + + ap_cfg = ioread32(hw_info->pcie_base + DPMAIF_AP_OVERWRITE_CFG); + ap_cfg |= DPMAIF_SRAM_SYNC; + iowrite32(ap_cfg, hw_info->pcie_base + DPMAIF_AP_OVERWRITE_CFG); + + ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AP_OVERWRITE_CFG, + ap_cfg, !(ap_cfg & DPMAIF_SRAM_SYNC), 0, + DPMAIF_CHECK_TIMEOUT_US); + if (ret) + return ret; + + iowrite32(DPMAIF_UL_INIT_DONE, hw_info->pcie_base + DPMAIF_AO_UL_INIT_SET); + iowrite32(DPMAIF_DL_INIT_DONE, hw_info->pcie_base + DPMAIF_AO_DL_INIT_SET); + return 0; +} + +static bool t7xx_dpmaif_dl_idle_check(struct dpmaif_hw_info *hw_info) +{ + u32 dpmaif_dl_is_busy = ioread32(hw_info->pcie_base + DPMAIF_DL_CHK_BUSY); + + return !(dpmaif_dl_is_busy & DPMAIF_DL_IDLE_STS); +} + +static void t7xx_dpmaif_ul_all_q_en(struct dpmaif_hw_info *hw_info, bool enable) +{ + u32 ul_arb_en = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0); + + if (enable) + ul_arb_en |= DPMAIF_UL_ALL_QUE_ARB_EN; + else + ul_arb_en &= ~DPMAIF_UL_ALL_QUE_ARB_EN; + + iowrite32(ul_arb_en, hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0); +} + +static bool t7xx_dpmaif_ul_idle_check(struct dpmaif_hw_info *hw_info) +{ + u32 dpmaif_ul_is_busy = ioread32(hw_info->pcie_base + DPMAIF_UL_CHK_BUSY); + + return !(dpmaif_ul_is_busy & DPMAIF_UL_IDLE_STS); +} + +void t7xx_dpmaif_ul_update_hw_drb_cnt(struct dpmaif_hw_info *hw_info, unsigned int q_num, + unsigned int drb_entry_cnt) +{ + u32 ul_update, value; + int err; + + ul_update = drb_entry_cnt & DPMAIF_UL_ADD_COUNT_MASK; + ul_update |= DPMAIF_UL_ADD_UPDATE; + + err = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_ULQ_ADD_DESC_CH_n(q_num), + value, !(value & DPMAIF_UL_ADD_NOT_READY), 0, + DPMAIF_CHECK_TIMEOUT_US); + if (err) { + dev_err(hw_info->dev, "UL add is not ready\n"); + return; + } + + iowrite32(ul_update, hw_info->pcie_base + DPMAIF_ULQ_ADD_DESC_CH_n(q_num)); + + err = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_ULQ_ADD_DESC_CH_n(q_num), + value, !(value & DPMAIF_UL_ADD_NOT_READY), 0, + DPMAIF_CHECK_TIMEOUT_US); + if (err) + dev_err(hw_info->dev, "Timeout updating UL add\n"); +} + +unsigned int t7xx_dpmaif_ul_get_rd_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num) +{ + unsigned int value = ioread32(hw_info->pcie_base + DPMAIF_ULQ_STA0_n(q_num)); + + return FIELD_GET(DPMAIF_UL_DRB_RIDX_MSK, value) / DPMAIF_UL_DRB_SIZE_WORD; +} + +int t7xx_dpmaif_dlq_add_pit_remain_cnt(struct dpmaif_hw_info *hw_info, unsigned int dlq_pit_idx, + unsigned int pit_remain_cnt) +{ + u32 dl_update, value; + int ret; + + dl_update = pit_remain_cnt & DPMAIF_PIT_REM_CNT_MSK; + dl_update |= DPMAIF_DL_ADD_UPDATE | (dlq_pit_idx << DPMAIF_ADD_DLQ_PIT_CHAN_OFS); + + ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_ADD, + value, !(value & DPMAIF_DL_ADD_NOT_READY), 0, + DPMAIF_CHECK_TIMEOUT_US); + if (ret) { + dev_err(hw_info->dev, "Data plane modem is not ready to add dlq\n"); + return ret; + } + + iowrite32(dl_update, hw_info->pcie_base + DPMAIF_DL_DLQPIT_ADD); + + ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_ADD, + value, !(value & DPMAIF_DL_ADD_NOT_READY), 0, + DPMAIF_CHECK_TIMEOUT_US); + if (ret) { + dev_err(hw_info->dev, "Data plane modem add dlq failed\n"); + return ret; + } + + return 0; +} + +unsigned int t7xx_dpmaif_dl_dlq_pit_get_wr_idx(struct dpmaif_hw_info *hw_info, + unsigned int dlq_pit_idx) +{ + u32 value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_DLQ_WR_IDX + + dlq_pit_idx * DLQ_PIT_IDX_SIZE); + return value & DPMAIF_DL_RD_WR_IDX_MSK; +} + +static int t7xx_dl_add_timedout(struct dpmaif_hw_info *hw_info) +{ + u32 value; + + return ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_ADD, + value, !(value & DPMAIF_DL_ADD_NOT_READY), 0, + DPMAIF_CHECK_TIMEOUT_US); +} + +int t7xx_dpmaif_dl_snd_hw_bat_cnt(struct dpmaif_hw_info *hw_info, unsigned int bat_entry_cnt) +{ + unsigned int value; + + if (t7xx_dl_add_timedout(hw_info)) { + dev_err(hw_info->dev, "DL add BAT not ready\n"); + return -EBUSY; + } + + value = bat_entry_cnt & DPMAIF_DL_ADD_COUNT_MASK; + value |= DPMAIF_DL_ADD_UPDATE; + iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_ADD); + + if (t7xx_dl_add_timedout(hw_info)) { + dev_err(hw_info->dev, "DL add BAT timeout\n"); + return -EBUSY; + } + + return 0; +} + +unsigned int t7xx_dpmaif_dl_get_bat_rd_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num) +{ + u32 value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_BAT_RD_IDX); + return value & DPMAIF_DL_RD_WR_IDX_MSK; +} + +unsigned int t7xx_dpmaif_dl_get_bat_wr_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num) +{ + u32 value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_BAT_WR_IDX); + return value & DPMAIF_DL_RD_WR_IDX_MSK; +} + +int t7xx_dpmaif_dl_snd_hw_frg_cnt(struct dpmaif_hw_info *hw_info, unsigned int frg_entry_cnt) +{ + unsigned int value; + + if (t7xx_dl_add_timedout(hw_info)) { + dev_err(hw_info->dev, "Data plane modem is not ready to add frag DLQ\n"); + return -EBUSY; + } + + value = frg_entry_cnt & DPMAIF_DL_ADD_COUNT_MASK; + value |= DPMAIF_DL_FRG_ADD_UPDATE | DPMAIF_DL_ADD_UPDATE; + iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_ADD); + + if (t7xx_dl_add_timedout(hw_info)) { + dev_err(hw_info->dev, "Data plane modem add frag DLQ failed"); + return -EBUSY; + } + + return 0; +} + +unsigned int t7xx_dpmaif_dl_get_frg_rd_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num) +{ + u32 value; + + value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_FRGBAT_RD_IDX); + return value & DPMAIF_DL_RD_WR_IDX_MSK; +} + +static void t7xx_dpmaif_set_queue_property(struct dpmaif_hw_info *hw_info, + struct dpmaif_hw_params *init_para) +{ + struct dpmaif_dl *dl_que; + struct dpmaif_ul *ul_que; + int i; + + for (i = 0; i < DPMAIF_RXQ_NUM; i++) { + dl_que = &hw_info->dl_que[i]; + dl_que->bat_base = init_para->pkt_bat_base_addr[i]; + dl_que->bat_size_cnt = init_para->pkt_bat_size_cnt[i]; + dl_que->pit_base = init_para->pit_base_addr[i]; + dl_que->pit_size_cnt = init_para->pit_size_cnt[i]; + dl_que->frg_base = init_para->frg_bat_base_addr[i]; + dl_que->frg_size_cnt = init_para->frg_bat_size_cnt[i]; + dl_que->que_started = true; + } + + for (i = 0; i < DPMAIF_TXQ_NUM; i++) { + ul_que = &hw_info->ul_que[i]; + ul_que->drb_base = init_para->drb_base_addr[i]; + ul_que->drb_size_cnt = init_para->drb_size_cnt[i]; + ul_que->que_started = true; + } +} + +/** + * t7xx_dpmaif_hw_stop_all_txq() - Stop all TX queues. + * @hw_info: Pointer to struct hw_info. + * + * Disable HW UL queues. Checks busy UL queues to go to idle + * with an attempt count of 1000000. + * + * Return: + * * 0 - Success + * * -ETIMEDOUT - Timed out checking busy queues + */ +int t7xx_dpmaif_hw_stop_all_txq(struct dpmaif_hw_info *hw_info) +{ + int count = 0; + + t7xx_dpmaif_ul_all_q_en(hw_info, false); + while (t7xx_dpmaif_ul_idle_check(hw_info)) { + if (++count >= DPMAIF_MAX_CHECK_COUNT) { + dev_err(hw_info->dev, "Failed to stop TX, status: 0x%x\n", + ioread32(hw_info->pcie_base + DPMAIF_UL_CHK_BUSY)); + return -ETIMEDOUT; + } + } + + return 0; +} + +/** + * t7xx_dpmaif_hw_stop_all_rxq() - Stop all RX queues. + * @hw_info: Pointer to struct hw_info. + * + * Disable HW DL queue. Checks busy UL queues to go to idle + * with an attempt count of 1000000. + * Check that HW PIT write index equals read index with the same + * attempt count. + * + * Return: + * * 0 - Success. + * * -ETIMEDOUT - Timed out checking busy queues. + */ +int t7xx_dpmaif_hw_stop_all_rxq(struct dpmaif_hw_info *hw_info) +{ + unsigned int wr_idx, rd_idx; + int count = 0; + + t7xx_dpmaif_dl_all_q_en(hw_info, false); + while (t7xx_dpmaif_dl_idle_check(hw_info)) { + if (++count >= DPMAIF_MAX_CHECK_COUNT) { + dev_err(hw_info->dev, "Failed to stop RX, status: 0x%x\n", + ioread32(hw_info->pcie_base + DPMAIF_DL_CHK_BUSY)); + return -ETIMEDOUT; + } + } + + /* Check middle PIT sync done */ + count = 0; + do { + wr_idx = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PIT_WR_IDX); + wr_idx &= DPMAIF_DL_RD_WR_IDX_MSK; + rd_idx = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PIT_RD_IDX); + rd_idx &= DPMAIF_DL_RD_WR_IDX_MSK; + + if (wr_idx == rd_idx) + return 0; + } while (++count < DPMAIF_MAX_CHECK_COUNT); + + dev_err(hw_info->dev, "Check middle PIT sync fail\n"); + return -ETIMEDOUT; +} + +void t7xx_dpmaif_start_hw(struct dpmaif_hw_info *hw_info) +{ + t7xx_dpmaif_ul_all_q_en(hw_info, true); + t7xx_dpmaif_dl_all_q_en(hw_info, true); +} + +/** + * t7xx_dpmaif_hw_init() - Initialize HW data path API. + * @hw_info: Pointer to struct hw_info. + * @init_param: Pointer to struct dpmaif_hw_params. + * + * Configures port mode, clock config, HW interrupt initialization, and HW queue. + * + * Return: + * * 0 - Success. + * * -ERROR - Error code from failure sub-initializations. + */ +int t7xx_dpmaif_hw_init(struct dpmaif_hw_info *hw_info, struct dpmaif_hw_params *init_param) +{ + int ret; + + ret = t7xx_dpmaif_hw_config(hw_info); + if (ret) { + dev_err(hw_info->dev, "DPMAIF HW config failed\n"); + return ret; + } + + ret = t7xx_dpmaif_init_intr(hw_info); + if (ret) { + dev_err(hw_info->dev, "DPMAIF HW interrupts init failed\n"); + return ret; + } + + t7xx_dpmaif_set_queue_property(hw_info, init_param); + t7xx_dpmaif_pcie_dpmaif_sign(hw_info); + t7xx_dpmaif_dl_performance(hw_info); + + ret = t7xx_dpmaif_config_dlq_hw(hw_info); + if (ret) { + dev_err(hw_info->dev, "DPMAIF HW dlq config failed\n"); + return ret; + } + + t7xx_dpmaif_config_ulq_hw(hw_info); + + ret = t7xx_dpmaif_hw_init_done(hw_info); + if (ret) + dev_err(hw_info->dev, "DPMAIF HW queue init failed\n"); + + return ret; +} + +bool t7xx_dpmaif_ul_clr_done(struct dpmaif_hw_info *hw_info, unsigned int qno) +{ + u32 intr_status; + + intr_status = ioread32(hw_info->pcie_base + DPMAIF_AP_L2TISAR0); + intr_status &= BIT(DP_UL_INT_DONE_OFFSET + qno); + if (intr_status) { + iowrite32(intr_status, hw_info->pcie_base + DPMAIF_AP_L2TISAR0); + return true; + } + + return false; +} |