[PATCH 04/12] fsl/fman: Add the FMan port FLIB

From: Madalin Bucur
Date: Wed Jun 10 2015 - 11:28:05 EST

From: Igal Liberman <Igal.Liberman@xxxxxxxxxxxxx>

The FMan Port FLib provides basic API used by the drivers to
configure and control the FMan Port hardware.

Signed-off-by: Igal Liberman <Igal.Liberman@xxxxxxxxxxxxx>
---
drivers/net/ethernet/freescale/fman/Kconfig | 1 +
drivers/net/ethernet/freescale/fman/Makefile | 2 +
drivers/net/ethernet/freescale/fman/port/Makefile | 3 +
.../net/ethernet/freescale/fman/port/fman_port.c | 619 +++++++++++++++++++++
4 files changed, 625 insertions(+)
create mode 100644 drivers/net/ethernet/freescale/fman/port/Makefile
create mode 100644 drivers/net/ethernet/freescale/fman/port/fman_port.c

diff --git a/drivers/net/ethernet/freescale/fman/Kconfig b/drivers/net/ethernet/freescale/fman/Kconfig
index 8aeae29..af42c3a 100644
--- a/drivers/net/ethernet/freescale/fman/Kconfig
+++ b/drivers/net/ethernet/freescale/fman/Kconfig
@@ -5,3 +5,4 @@ config FSL_FMAN
help
Freescale Data-Path Acceleration Architecture Frame Manager
(FMan) support
+
diff --git a/drivers/net/ethernet/freescale/fman/Makefile b/drivers/net/ethernet/freescale/fman/Makefile
index 2799c6f..50a4de2 100644
--- a/drivers/net/ethernet/freescale/fman/Makefile
+++ b/drivers/net/ethernet/freescale/fman/Makefile
@@ -3,3 +3,5 @@ subdir-ccflags-y += -I$(srctree)/drivers/net/ethernet/freescale/fman/flib
obj-y += fsl_fman.o

fsl_fman-objs := fman.o
+
+obj-y += port/
diff --git a/drivers/net/ethernet/freescale/fman/port/Makefile b/drivers/net/ethernet/freescale/fman/port/Makefile
new file mode 100644
index 0000000..54b1fa4
--- /dev/null
+++ b/drivers/net/ethernet/freescale/fman/port/Makefile
@@ -0,0 +1,3 @@
+obj-y += fsl_fman_port.o
+
+fsl_fman_port-objs := fman_port.o
diff --git a/drivers/net/ethernet/freescale/fman/port/fman_port.c b/drivers/net/ethernet/freescale/fman/port/fman_port.c
new file mode 100644
index 0000000..6754c35
--- /dev/null
+++ b/drivers/net/ethernet/freescale/fman/port/fman_port.c
@@ -0,0 +1,619 @@
+/*
+ * Copyright 2008 - 2015 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "common/general.h"
+
+#include "fman_common.h"
+#include "fsl_fman_port.h"
+
+/* problem Eyal: the following should not be here*/
+#define NIA_FM_CTL_AC_NO_IPACC_PRE_BMI_ENQ_FRAME 0x00000028
+
+static uint32_t get_no_pcd_nia_bmi_ac_enc_frame(struct fman_port_cfg *cfg)
+{
+ if (cfg->errata_A006675)
+ return NIA_ENG_FM_CTL |
+ NIA_FM_CTL_AC_NO_IPACC_PRE_BMI_ENQ_FRAME;
+ else
+ return NIA_ENG_BMI | NIA_BMI_AC_ENQ_FRAME;
+}
+
+static int init_bmi_rx(struct fman_port *port,
+ struct fman_port_cfg *cfg,
+ struct fman_port_params *params)
+{
+ struct fman_port_rx_bmi_regs __iomem *regs = &port->bmi_regs->rx;
+ uint32_t tmp;
+
+ /* Rx Configuration register */
+ tmp = 0;
+ if (cfg->discard_override)
+ tmp |= BMI_PORT_CFG_FDOVR;
+ iowrite32be(tmp, &regs->fmbm_rcfg);
+
+ /* DMA attributes */
+ tmp = (uint32_t)cfg->dma_swap_data << BMI_DMA_ATTR_SWP_SHIFT;
+ if (cfg->dma_ic_stash_on)
+ tmp |= BMI_DMA_ATTR_IC_STASH_ON;
+ if (cfg->dma_header_stash_on)
+ tmp |= BMI_DMA_ATTR_HDR_STASH_ON;
+ if (cfg->dma_sg_stash_on)
+ tmp |= BMI_DMA_ATTR_SG_STASH_ON;
+ if (cfg->dma_write_optimize)
+ tmp |= BMI_DMA_ATTR_WRITE_OPTIMIZE;
+ iowrite32be(tmp, &regs->fmbm_rda);
+
+ /* Rx FIFO parameters */
+ tmp = (cfg->rx_pri_elevation / FMAN_PORT_BMI_FIFO_UNITS - 1) <<
+ BMI_RX_FIFO_PRI_ELEVATION_SHIFT;
+ tmp |= cfg->rx_fifo_thr / FMAN_PORT_BMI_FIFO_UNITS - 1;
+ iowrite32be(tmp, &regs->fmbm_rfp);
+
+ if (cfg->excessive_threshold_register)
+ /* always allow access to the extra resources */
+ iowrite32be(BMI_RX_FIFO_THRESHOLD_ETHE, &regs->fmbm_reth);
+
+ /* Frame end data */
+ tmp = (uint32_t)cfg->checksum_bytes_ignore <<
+ BMI_RX_FRAME_END_CS_IGNORE_SHIFT;
+ tmp |= (uint32_t)cfg->rx_cut_end_bytes << BMI_RX_FRAME_END_CUT_SHIFT;
+ if (cfg->errata_A006320)
+ tmp &= 0xffe0ffff;
+ iowrite32be(tmp, &regs->fmbm_rfed);
+
+ /* Internal context parameters */
+ tmp = ((uint32_t)cfg->ic_ext_offset / FMAN_PORT_IC_OFFSET_UNITS) <<
+ BMI_IC_TO_EXT_SHIFT;
+ tmp |= ((uint32_t)cfg->ic_int_offset / FMAN_PORT_IC_OFFSET_UNITS) <<
+ BMI_IC_FROM_INT_SHIFT;
+ tmp |= cfg->ic_size / FMAN_PORT_IC_OFFSET_UNITS;
+ iowrite32be(tmp, &regs->fmbm_ricp);
+
+ /* Internal buffer offset */
+ tmp = ((uint32_t)cfg->int_buf_start_margin / FMAN_PORT_IC_OFFSET_UNITS)
+ << BMI_INT_BUF_MARG_SHIFT;
+ iowrite32be(tmp, &regs->fmbm_rim);
+
+ /* External buffer margins */
+ tmp = (uint32_t)cfg->ext_buf_start_margin <<
+ BMI_EXT_BUF_MARG_START_SHIFT;
+ tmp |= (uint32_t)cfg->ext_buf_end_margin;
+ if (cfg->fmbm_rebm_has_sgd && cfg->no_scatter_gather)
+ tmp |= BMI_SG_DISABLE;
+ iowrite32be(tmp, &regs->fmbm_rebm);
+
+ /* Frame attributes */
+ tmp = BMI_CMD_RX_MR_DEF;
+ tmp |= BMI_CMD_ATTR_ORDER;
+ tmp |= (uint32_t)cfg->color << BMI_CMD_ATTR_COLOR_SHIFT;
+ if (cfg->sync_req)
+ tmp |= BMI_CMD_ATTR_SYNC;
+
+ iowrite32be(tmp, &regs->fmbm_rfca);
+
+ /* NIA */
+ tmp = (uint32_t)cfg->rx_fd_bits << BMI_NEXT_ENG_FD_BITS_SHIFT;
+ tmp |= get_no_pcd_nia_bmi_ac_enc_frame(cfg);
+
+ iowrite32be(tmp, &regs->fmbm_rfne);
+
+ /* Enqueue NIA */
+ iowrite32be(NIA_ENG_QMI_ENQ | NIA_ORDER_RESTOR, &regs->fmbm_rfene);
+
+ /* Default/error queues */
+ iowrite32be((params->dflt_fqid & 0x00FFFFFF), &regs->fmbm_rfqid);
+ iowrite32be((params->err_fqid & 0x00FFFFFF), &regs->fmbm_refqid);
+
+ /* Discard/error masks */
+ iowrite32be(params->discard_mask, &regs->fmbm_rfsdm);
+ iowrite32be(params->err_mask, &regs->fmbm_rfsem);
+
+ return 0;
+}
+
+static int init_bmi_tx(struct fman_port *port,
+ struct fman_port_cfg *cfg,
+ struct fman_port_params *params)
+{
+ struct fman_port_tx_bmi_regs __iomem *regs = &port->bmi_regs->tx;
+ uint32_t tmp;
+
+ /* Tx Configuration register */
+ tmp = 0;
+ iowrite32be(tmp, &regs->fmbm_tcfg);
+
+ /* DMA attributes */
+ tmp = (uint32_t)cfg->dma_swap_data << BMI_DMA_ATTR_SWP_SHIFT;
+ if (cfg->dma_ic_stash_on)
+ tmp |= BMI_DMA_ATTR_IC_STASH_ON;
+ if (cfg->dma_header_stash_on)
+ tmp |= BMI_DMA_ATTR_HDR_STASH_ON;
+ if (cfg->dma_sg_stash_on)
+ tmp |= BMI_DMA_ATTR_SG_STASH_ON;
+ iowrite32be(tmp, &regs->fmbm_tda);
+
+ /* Tx FIFO parameters */
+ tmp = (cfg->tx_fifo_min_level / FMAN_PORT_BMI_FIFO_UNITS) <<
+ BMI_TX_FIFO_MIN_FILL_SHIFT;
+ tmp |= ((uint32_t)cfg->tx_fifo_deq_pipeline_depth - 1) <<
+ BMI_FIFO_PIPELINE_DEPTH_SHIFT;
+ tmp |= (uint32_t)(cfg->tx_fifo_low_comf_level /
+ FMAN_PORT_BMI_FIFO_UNITS - 1);
+ iowrite32be(tmp, &regs->fmbm_tfp);
+
+ /* Frame end data */
+ tmp = (uint32_t)cfg->checksum_bytes_ignore <<
+ BMI_FRAME_END_CS_IGNORE_SHIFT;
+ iowrite32be(tmp, &regs->fmbm_tfed);
+
+ /* Internal context parameters */
+ tmp = ((uint32_t)cfg->ic_ext_offset / FMAN_PORT_IC_OFFSET_UNITS) <<
+ BMI_IC_TO_EXT_SHIFT;
+ tmp |= ((uint32_t)cfg->ic_int_offset / FMAN_PORT_IC_OFFSET_UNITS) <<
+ BMI_IC_FROM_INT_SHIFT;
+ tmp |= cfg->ic_size / FMAN_PORT_IC_OFFSET_UNITS;
+ iowrite32be(tmp, &regs->fmbm_ticp);
+
+ /* Frame attributes */
+ tmp = BMI_CMD_TX_MR_DEF;
+ tmp |= BMI_CMD_ATTR_ORDER;
+ tmp |= (uint32_t)cfg->color << BMI_CMD_ATTR_COLOR_SHIFT;
+ iowrite32be(tmp, &regs->fmbm_tfca);
+
+ /* Dequeue NIA + enqueue NIA */
+ iowrite32be(NIA_ENG_QMI_DEQ, &regs->fmbm_tfdne);
+ iowrite32be(NIA_ENG_QMI_ENQ | NIA_ORDER_RESTOR, &regs->fmbm_tfene);
+ if (cfg->fmbm_tfne_has_features)
+ iowrite32be(!params->dflt_fqid ?
+ BMI_EBD_EN | NIA_BMI_AC_FETCH_ALL_FRAME :
+ NIA_BMI_AC_FETCH_ALL_FRAME, &regs->fmbm_tfne);
+ if (!params->dflt_fqid && params->dont_release_buf) {
+ iowrite32be(0x00FFFFFF, &regs->fmbm_tcfqid);
+ iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX_RELEASE,
+ &regs->fmbm_tfene);
+ if (cfg->fmbm_tfne_has_features)
+ iowrite32be(ioread32be(&regs->fmbm_tfne) & ~BMI_EBD_EN,
+ &regs->fmbm_tfne);
+ }
+
+ /* Confirmation/error queues */
+ if (params->dflt_fqid || !params->dont_release_buf)
+ iowrite32be(params->dflt_fqid & 0x00FFFFFF, &regs->fmbm_tcfqid);
+ iowrite32be((params->err_fqid & 0x00FFFFFF), &regs->fmbm_tefqid);
+
+ return 0;
+}
+
+static int init_bmi_oh(struct fman_port *port,
+ struct fman_port_cfg *cfg,
+ struct fman_port_params *params)
+{
+ struct fman_port_oh_bmi_regs __iomem *regs = &port->bmi_regs->oh;
+ uint32_t tmp;
+
+ /* OP Configuration register */
+ tmp = 0;
+ if (cfg->discard_override)
+ tmp |= BMI_PORT_CFG_FDOVR;
+ iowrite32be(tmp, &regs->fmbm_ocfg);
+
+ /* DMA attributes */
+ tmp = (uint32_t)cfg->dma_swap_data << BMI_DMA_ATTR_SWP_SHIFT;
+ if (cfg->dma_ic_stash_on)
+ tmp |= BMI_DMA_ATTR_IC_STASH_ON;
+ if (cfg->dma_header_stash_on)
+ tmp |= BMI_DMA_ATTR_HDR_STASH_ON;
+ if (cfg->dma_sg_stash_on)
+ tmp |= BMI_DMA_ATTR_SG_STASH_ON;
+ if (cfg->dma_write_optimize)
+ tmp |= BMI_DMA_ATTR_WRITE_OPTIMIZE;
+ iowrite32be(tmp, &regs->fmbm_oda);
+
+ /* Tx FIFO parameters */
+ tmp = ((uint32_t)cfg->tx_fifo_deq_pipeline_depth - 1) <<
+ BMI_FIFO_PIPELINE_DEPTH_SHIFT;
+ iowrite32be(tmp, &regs->fmbm_ofp);
+
+ /* Internal context parameters */
+ tmp = ((uint32_t)cfg->ic_ext_offset / FMAN_PORT_IC_OFFSET_UNITS) <<
+ BMI_IC_TO_EXT_SHIFT;
+ tmp |= ((uint32_t)cfg->ic_int_offset / FMAN_PORT_IC_OFFSET_UNITS) <<
+ BMI_IC_FROM_INT_SHIFT;
+ tmp |= cfg->ic_size / FMAN_PORT_IC_OFFSET_UNITS;
+ iowrite32be(tmp, &regs->fmbm_oicp);
+
+ /* Frame attributes */
+ tmp = BMI_CMD_OP_MR_DEF;
+ tmp |= (uint32_t)cfg->color << BMI_CMD_ATTR_COLOR_SHIFT;
+ if (cfg->sync_req)
+ tmp |= BMI_CMD_ATTR_SYNC;
+ if (port->type == E_FMAN_PORT_TYPE_OP)
+ tmp |= BMI_CMD_ATTR_ORDER;
+ iowrite32be(tmp, &regs->fmbm_ofca);
+
+ /* Internal buffer offset */
+ tmp = ((uint32_t)cfg->int_buf_start_margin / FMAN_PORT_IC_OFFSET_UNITS)
+ << BMI_INT_BUF_MARG_SHIFT;
+ iowrite32be(tmp, &regs->fmbm_oim);
+
+ /* Dequeue NIA */
+ iowrite32be(NIA_ENG_QMI_DEQ, &regs->fmbm_ofdne);
+
+ /* NIA and Enqueue NIA */
+ iowrite32be(get_no_pcd_nia_bmi_ac_enc_frame(cfg),
+ &regs->fmbm_ofne);
+ iowrite32be(NIA_ENG_QMI_ENQ | NIA_ORDER_RESTOR,
+ &regs->fmbm_ofene);
+
+ /* Default/error queues */
+ iowrite32be((params->dflt_fqid & 0x00FFFFFF), &regs->fmbm_ofqid);
+ iowrite32be((params->err_fqid & 0x00FFFFFF), &regs->fmbm_oefqid);
+
+ /* Discard/error masks */
+ if (port->type == E_FMAN_PORT_TYPE_OP) {
+ iowrite32be(params->discard_mask, &regs->fmbm_ofsdm);
+ iowrite32be(params->err_mask, &regs->fmbm_ofsem);
+ }
+
+ return 0;
+}
+
+static int init_qmi(struct fman_port *port,
+ struct fman_port_cfg *cfg, struct fman_port_params *params)
+{
+ struct fman_port_qmi_regs __iomem *regs = port->qmi_regs;
+ uint32_t tmp;
+
+ /* Rx port configuration */
+ if ((port->type == E_FMAN_PORT_TYPE_RX) ||
+ (port->type == E_FMAN_PORT_TYPE_RX_10G)) {
+ /* Enqueue NIA */
+ iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_RELEASE, &regs->fmqm_pnen);
+ return 0;
+ }
+
+ /* Continue with Tx and O/H port configuration */
+ if ((port->type == E_FMAN_PORT_TYPE_TX) ||
+ (port->type == E_FMAN_PORT_TYPE_TX_10G)) {
+ /* Enqueue NIA */
+ iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX_RELEASE,
+ &regs->fmqm_pnen);
+ /* Dequeue NIA */
+ iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX, &regs->fmqm_pndn);
+ } else {
+ /* Enqueue NIA */
+ iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_RELEASE, &regs->fmqm_pnen);
+ /* Dequeue NIA */
+ iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_FETCH, &regs->fmqm_pndn);
+ }
+
+ /* Dequeue Configuration register */
+ tmp = 0;
+ if (cfg->deq_high_pri)
+ tmp |= QMI_DEQ_CFG_PRI;
+
+ switch (cfg->deq_type) {
+ case E_FMAN_PORT_DEQ_BY_PRI:
+ tmp |= QMI_DEQ_CFG_TYPE1;
+ break;
+ case E_FMAN_PORT_DEQ_ACTIVE_FQ:
+ tmp |= QMI_DEQ_CFG_TYPE2;
+ break;
+ case E_FMAN_PORT_DEQ_ACTIVE_FQ_NO_ICS:
+ tmp |= QMI_DEQ_CFG_TYPE3;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (cfg->qmi_deq_options_support) {
+ switch (cfg->deq_prefetch_opt) {
+ case E_FMAN_PORT_DEQ_NO_PREFETCH:
+ break;
+ case E_FMAN_PORT_DEQ_PART_PREFETCH:
+ tmp |= QMI_DEQ_CFG_PREFETCH_PARTIAL;
+ break;
+ case E_FMAN_PORT_DEQ_FULL_PREFETCH:
+ tmp |= QMI_DEQ_CFG_PREFETCH_FULL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+ tmp |= (uint32_t)(params->deq_sp & QMI_DEQ_CFG_SP_MASK) <<
+ QMI_DEQ_CFG_SP_SHIFT;
+ tmp |= cfg->deq_byte_cnt;
+ iowrite32be(tmp, &regs->fmqm_pndc);
+
+ return 0;
+}
+
+void fman_port_defconfig(struct fman_port_cfg *cfg, enum fman_port_type type)
+{
+ cfg->dma_swap_data = E_FMAN_PORT_DMA_NO_SWAP;
+ cfg->dma_ic_stash_on = false;
+ cfg->dma_header_stash_on = false;
+ cfg->dma_sg_stash_on = false;
+ cfg->dma_write_optimize = true;
+ cfg->color = E_FMAN_PORT_COLOR_GREEN;
+ cfg->discard_override = false;
+ cfg->checksum_bytes_ignore = 0;
+ cfg->rx_cut_end_bytes = 4;
+ cfg->rx_pri_elevation = ((0x3FF + 1) * FMAN_PORT_BMI_FIFO_UNITS);
+ cfg->rx_fifo_thr = ((0x3FF + 1) * FMAN_PORT_BMI_FIFO_UNITS);
+ cfg->rx_fd_bits = 0;
+ cfg->ic_ext_offset = 0;
+ cfg->ic_int_offset = 0;
+ cfg->ic_size = 0;
+ cfg->int_buf_start_margin = 0;
+ cfg->ext_buf_start_margin = 0;
+ cfg->ext_buf_end_margin = 0;
+ cfg->tx_fifo_min_level = 0;
+ cfg->tx_fifo_low_comf_level = (5 * 1024);
+ cfg->deq_type = E_FMAN_PORT_DEQ_BY_PRI;
+
+ cfg->sync_req = true;
+ cfg->deq_prefetch_opt = E_FMAN_PORT_DEQ_FULL_PREFETCH;
+
+ if (type == E_FMAN_PORT_TYPE_TX_10G) {
+ cfg->tx_fifo_deq_pipeline_depth = 4;
+ cfg->deq_high_pri = true;
+ cfg->deq_byte_cnt = 0x1400;
+ } else {
+ if (type == E_FMAN_PORT_TYPE_OP)
+ cfg->tx_fifo_deq_pipeline_depth = 2;
+ else
+ cfg->tx_fifo_deq_pipeline_depth = 1;
+
+ cfg->deq_high_pri = false;
+ cfg->deq_byte_cnt = 0x400;
+ }
+ cfg->no_scatter_gather = DEFAULT_FMAN_SP_NO_SCATTER_GATHER;
+}
+
+int fman_port_init(struct fman_port *port,
+ struct fman_port_cfg *cfg, struct fman_port_params *params)
+{
+ int err;
+
+ /* Init BMI registers */
+ switch (port->type) {
+ case E_FMAN_PORT_TYPE_RX:
+ case E_FMAN_PORT_TYPE_RX_10G:
+ err = init_bmi_rx(port, cfg, params);
+ break;
+ case E_FMAN_PORT_TYPE_TX:
+ case E_FMAN_PORT_TYPE_TX_10G:
+ err = init_bmi_tx(port, cfg, params);
+ break;
+ case E_FMAN_PORT_TYPE_OP:
+ err = init_bmi_oh(port, cfg, params);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (err)
+ return err;
+
+ /* Init QMI registers */
+ err = init_qmi(port, cfg, params);
+ return err;
+
+ return 0;
+}
+
+int fman_port_enable(struct fman_port *port)
+{
+ uint32_t __iomem *bmi_cfg_reg;
+ uint32_t tmp;
+ bool rx_port;
+
+ switch (port->type) {
+ case E_FMAN_PORT_TYPE_RX:
+ case E_FMAN_PORT_TYPE_RX_10G:
+ bmi_cfg_reg = &port->bmi_regs->rx.fmbm_rcfg;
+ rx_port = true;
+ break;
+ case E_FMAN_PORT_TYPE_TX:
+ case E_FMAN_PORT_TYPE_TX_10G:
+ bmi_cfg_reg = &port->bmi_regs->tx.fmbm_tcfg;
+ rx_port = false;
+ break;
+ case E_FMAN_PORT_TYPE_OP:
+ bmi_cfg_reg = &port->bmi_regs->oh.fmbm_ocfg;
+ rx_port = false;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Enable QMI */
+ if (!rx_port) {
+ tmp = ioread32be(&port->qmi_regs->fmqm_pnc) | QMI_PORT_CFG_EN;
+ iowrite32be(tmp, &port->qmi_regs->fmqm_pnc);
+ }
+
+ /* Enable BMI */
+ tmp = ioread32be(bmi_cfg_reg) | BMI_PORT_CFG_EN;
+ iowrite32be(tmp, bmi_cfg_reg);
+
+ return 0;
+}
+
+int fman_port_disable(const struct fman_port *port)
+{
+ uint32_t __iomem *bmi_cfg_reg, *bmi_status_reg;
+ uint32_t tmp;
+ bool rx_port, failure = false;
+ int count;
+
+ switch (port->type) {
+ case E_FMAN_PORT_TYPE_RX:
+ case E_FMAN_PORT_TYPE_RX_10G:
+ bmi_cfg_reg = &port->bmi_regs->rx.fmbm_rcfg;
+ bmi_status_reg = &port->bmi_regs->rx.fmbm_rst;
+ rx_port = true;
+ break;
+ case E_FMAN_PORT_TYPE_TX:
+ case E_FMAN_PORT_TYPE_TX_10G:
+ bmi_cfg_reg = &port->bmi_regs->tx.fmbm_tcfg;
+ bmi_status_reg = &port->bmi_regs->tx.fmbm_tst;
+ rx_port = false;
+ break;
+ case E_FMAN_PORT_TYPE_OP:
+ bmi_cfg_reg = &port->bmi_regs->oh.fmbm_ocfg;
+ bmi_status_reg = &port->bmi_regs->oh.fmbm_ost;
+ rx_port = false;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Disable QMI */
+ if (!rx_port) {
+ tmp = ioread32be(&port->qmi_regs->fmqm_pnc) & ~QMI_PORT_CFG_EN;
+ iowrite32be(tmp, &port->qmi_regs->fmqm_pnc);
+
+ /* Wait for QMI to finish FD handling */
+ count = 100;
+ do {
+ usleep_range(10, 11);
+ tmp = ioread32be(&port->qmi_regs->fmqm_pns);
+ } while ((tmp & QMI_PORT_STATUS_DEQ_FD_BSY) && --count);
+
+ if (count == 0) {
+ /* Timeout */
+ failure = true;
+ }
+ }
+
+ /* Disable BMI */
+ tmp = ioread32be(bmi_cfg_reg) & ~BMI_PORT_CFG_EN;
+ iowrite32be(tmp, bmi_cfg_reg);
+
+ /* Wait for graceful stop end */
+ count = 500;
+ do {
+ usleep_range(10, 11);
+ tmp = ioread32be(bmi_status_reg);
+ } while ((tmp & BMI_PORT_STATUS_BSY) && --count);
+
+ if (count == 0) {
+ /* Timeout */
+ failure = true;
+ }
+
+ if (failure)
+ return -EBUSY;
+
+ return 0;
+}
+
+int fman_port_set_bpools(const struct fman_port *port,
+ const struct fman_port_bpools *bp)
+{
+ uint32_t __iomem *bp_reg, *bp_depl_reg;
+ uint32_t tmp;
+ uint8_t i, max_bp_num;
+ bool grp_depl_used = false, rx_port;
+
+ switch (port->type) {
+ case E_FMAN_PORT_TYPE_RX:
+ case E_FMAN_PORT_TYPE_RX_10G:
+ max_bp_num = port->ext_pools_num;
+ rx_port = true;
+ bp_reg = port->bmi_regs->rx.fmbm_ebmpi;
+ bp_depl_reg = &port->bmi_regs->rx.fmbm_mpd;
+ break;
+ case E_FMAN_PORT_TYPE_OP:
+ if (port->fm_rev_maj != 4)
+ return -EINVAL;
+ max_bp_num = FMAN_PORT_OBS_EXT_POOLS_NUM;
+ rx_port = false;
+ bp_reg = port->bmi_regs->oh.fmbm_oebmpi;
+ bp_depl_reg = &port->bmi_regs->oh.fmbm_ompd;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (rx_port) {
+ /* Check buffers are provided in ascending order */
+ for (i = 0; (i < (bp->count - 1) &&
+ (i < FMAN_PORT_MAX_EXT_POOLS_NUM - 1)); i++) {
+ if (bp->bpool[i].size > bp->bpool[i + 1].size)
+ return -EINVAL;
+ }
+ }
+
+ /* Set up external buffers pools */
+ for (i = 0; i < bp->count; i++) {
+ tmp = BMI_EXT_BUF_POOL_VALID;
+ tmp |= ((uint32_t)bp->bpool[i].bpid <<
+ BMI_EXT_BUF_POOL_ID_SHIFT) & BMI_EXT_BUF_POOL_ID_MASK;
+
+ if (rx_port) {
+ if (bp->counters_enable)
+ tmp |= BMI_EXT_BUF_POOL_EN_COUNTER;
+
+ if (bp->bpool[i].is_backup)
+ tmp |= BMI_EXT_BUF_POOL_BACKUP;
+
+ tmp |= (uint32_t)bp->bpool[i].size;
+ }
+
+ iowrite32be(tmp, &bp_reg[i]);
+ }
+
+ /* Clear unused pools */
+ for (i = bp->count; i < max_bp_num; i++)
+ iowrite32be(0, &bp_reg[i]);
+
+ /* Pools depletion */
+ tmp = 0;
+ for (i = 0; i < FMAN_PORT_MAX_EXT_POOLS_NUM; i++) {
+ if (bp->bpool[i].grp_bp_depleted) {
+ grp_depl_used = true;
+ tmp |= 0x80000000 >> i;
+ }
+
+ if (bp->bpool[i].single_bp_depleted)
+ tmp |= 0x80 >> i;
+ }
+
+ if (grp_depl_used)
+ tmp |= ((uint32_t)bp->grp_bp_depleted_num - 1) <<
+ BMI_POOL_DEP_NUM_OF_POOLS_SHIFT;
+
+ iowrite32be(tmp, bp_depl_reg);
+ return 0;
+}
--
1.7.11.7

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