summaryrefslogtreecommitdiffstats
path: root/kernel/include/linux/soc
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/include/linux/soc')
-rw-r--r--kernel/include/linux/soc/ti/knav_dma.h175
-rw-r--r--kernel/include/linux/soc/ti/knav_qmss.h90
2 files changed, 265 insertions, 0 deletions
diff --git a/kernel/include/linux/soc/ti/knav_dma.h b/kernel/include/linux/soc/ti/knav_dma.h
new file mode 100644
index 000000000..dad035c16
--- /dev/null
+++ b/kernel/include/linux/soc/ti/knav_dma.h
@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2014 Texas Instruments Incorporated
+ * Authors: Sandeep Nair <sandeep_n@ti.com
+ * Cyril Chemparathy <cyril@ti.com
+ Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __SOC_TI_KEYSTONE_NAVIGATOR_DMA_H__
+#define __SOC_TI_KEYSTONE_NAVIGATOR_DMA_H__
+
+/*
+ * PKTDMA descriptor manipulation macros for host packet descriptor
+ */
+#define MASK(x) (BIT(x) - 1)
+#define KNAV_DMA_DESC_PKT_LEN_MASK MASK(22)
+#define KNAV_DMA_DESC_PKT_LEN_SHIFT 0
+#define KNAV_DMA_DESC_PS_INFO_IN_SOP BIT(22)
+#define KNAV_DMA_DESC_PS_INFO_IN_DESC 0
+#define KNAV_DMA_DESC_TAG_MASK MASK(8)
+#define KNAV_DMA_DESC_SAG_HI_SHIFT 24
+#define KNAV_DMA_DESC_STAG_LO_SHIFT 16
+#define KNAV_DMA_DESC_DTAG_HI_SHIFT 8
+#define KNAV_DMA_DESC_DTAG_LO_SHIFT 0
+#define KNAV_DMA_DESC_HAS_EPIB BIT(31)
+#define KNAV_DMA_DESC_NO_EPIB 0
+#define KNAV_DMA_DESC_PSLEN_SHIFT 24
+#define KNAV_DMA_DESC_PSLEN_MASK MASK(6)
+#define KNAV_DMA_DESC_ERR_FLAG_SHIFT 20
+#define KNAV_DMA_DESC_ERR_FLAG_MASK MASK(4)
+#define KNAV_DMA_DESC_PSFLAG_SHIFT 16
+#define KNAV_DMA_DESC_PSFLAG_MASK MASK(4)
+#define KNAV_DMA_DESC_RETQ_SHIFT 0
+#define KNAV_DMA_DESC_RETQ_MASK MASK(14)
+#define KNAV_DMA_DESC_BUF_LEN_MASK MASK(22)
+
+#define KNAV_DMA_NUM_EPIB_WORDS 4
+#define KNAV_DMA_NUM_PS_WORDS 16
+#define KNAV_DMA_FDQ_PER_CHAN 4
+
+/* Tx channel scheduling priority */
+enum knav_dma_tx_priority {
+ DMA_PRIO_HIGH = 0,
+ DMA_PRIO_MED_H,
+ DMA_PRIO_MED_L,
+ DMA_PRIO_LOW
+};
+
+/* Rx channel error handling mode during buffer starvation */
+enum knav_dma_rx_err_mode {
+ DMA_DROP = 0,
+ DMA_RETRY
+};
+
+/* Rx flow size threshold configuration */
+enum knav_dma_rx_thresholds {
+ DMA_THRESH_NONE = 0,
+ DMA_THRESH_0 = 1,
+ DMA_THRESH_0_1 = 3,
+ DMA_THRESH_0_1_2 = 7
+};
+
+/* Descriptor type */
+enum knav_dma_desc_type {
+ DMA_DESC_HOST = 0,
+ DMA_DESC_MONOLITHIC = 2
+};
+
+/**
+ * struct knav_dma_tx_cfg: Tx channel configuration
+ * @filt_einfo: Filter extended packet info
+ * @filt_pswords: Filter PS words present
+ * @knav_dma_tx_priority: Tx channel scheduling priority
+ */
+struct knav_dma_tx_cfg {
+ bool filt_einfo;
+ bool filt_pswords;
+ enum knav_dma_tx_priority priority;
+};
+
+/**
+ * struct knav_dma_rx_cfg: Rx flow configuration
+ * @einfo_present: Extended packet info present
+ * @psinfo_present: PS words present
+ * @knav_dma_rx_err_mode: Error during buffer starvation
+ * @knav_dma_desc_type: Host or Monolithic desc
+ * @psinfo_at_sop: PS word located at start of packet
+ * @sop_offset: Start of packet offset
+ * @dst_q: Destination queue for a given flow
+ * @thresh: Rx flow size threshold
+ * @fdq[]: Free desc Queue array
+ * @sz_thresh0: RX packet size threshold 0
+ * @sz_thresh1: RX packet size threshold 1
+ * @sz_thresh2: RX packet size threshold 2
+ */
+struct knav_dma_rx_cfg {
+ bool einfo_present;
+ bool psinfo_present;
+ enum knav_dma_rx_err_mode err_mode;
+ enum knav_dma_desc_type desc_type;
+ bool psinfo_at_sop;
+ unsigned int sop_offset;
+ unsigned int dst_q;
+ enum knav_dma_rx_thresholds thresh;
+ unsigned int fdq[KNAV_DMA_FDQ_PER_CHAN];
+ unsigned int sz_thresh0;
+ unsigned int sz_thresh1;
+ unsigned int sz_thresh2;
+};
+
+/**
+ * struct knav_dma_cfg: Pktdma channel configuration
+ * @sl_cfg: Slave configuration
+ * @tx: Tx channel configuration
+ * @rx: Rx flow configuration
+ */
+struct knav_dma_cfg {
+ enum dma_transfer_direction direction;
+ union {
+ struct knav_dma_tx_cfg tx;
+ struct knav_dma_rx_cfg rx;
+ } u;
+};
+
+/**
+ * struct knav_dma_desc: Host packet descriptor layout
+ * @desc_info: Descriptor information like id, type, length
+ * @tag_info: Flow tag info written in during RX
+ * @packet_info: Queue Manager, policy, flags etc
+ * @buff_len: Buffer length in bytes
+ * @buff: Buffer pointer
+ * @next_desc: For chaining the descriptors
+ * @orig_len: length since 'buff_len' can be overwritten
+ * @orig_buff: buff pointer since 'buff' can be overwritten
+ * @epib: Extended packet info block
+ * @psdata: Protocol specific
+ */
+struct knav_dma_desc {
+ u32 desc_info;
+ u32 tag_info;
+ u32 packet_info;
+ u32 buff_len;
+ u32 buff;
+ u32 next_desc;
+ u32 orig_len;
+ u32 orig_buff;
+ u32 epib[KNAV_DMA_NUM_EPIB_WORDS];
+ u32 psdata[KNAV_DMA_NUM_PS_WORDS];
+ u32 pad[4];
+} ____cacheline_aligned;
+
+#if IS_ENABLED(CONFIG_KEYSTONE_NAVIGATOR_DMA)
+void *knav_dma_open_channel(struct device *dev, const char *name,
+ struct knav_dma_cfg *config);
+void knav_dma_close_channel(void *channel);
+#else
+static inline void *knav_dma_open_channel(struct device *dev, const char *name,
+ struct knav_dma_cfg *config)
+{
+ return (void *) NULL;
+}
+static inline void knav_dma_close_channel(void *channel)
+{}
+
+#endif
+
+#endif /* __SOC_TI_KEYSTONE_NAVIGATOR_DMA_H__ */
diff --git a/kernel/include/linux/soc/ti/knav_qmss.h b/kernel/include/linux/soc/ti/knav_qmss.h
new file mode 100644
index 000000000..9f0ebb3ba
--- /dev/null
+++ b/kernel/include/linux/soc/ti/knav_qmss.h
@@ -0,0 +1,90 @@
+/*
+ * Keystone Navigator Queue Management Sub-System header
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
+ * Author: Sandeep Nair <sandeep_n@ti.com>
+ * Cyril Chemparathy <cyril@ti.com>
+ * Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __SOC_TI_KNAV_QMSS_H__
+#define __SOC_TI_KNAV_QMSS_H__
+
+#include <linux/err.h>
+#include <linux/time.h>
+#include <linux/atomic.h>
+#include <linux/device.h>
+#include <linux/fcntl.h>
+#include <linux/dma-mapping.h>
+
+/* queue types */
+#define KNAV_QUEUE_QPEND ((unsigned)-2) /* interruptible qpend queue */
+#define KNAV_QUEUE_ACC ((unsigned)-3) /* Accumulated queue */
+#define KNAV_QUEUE_GP ((unsigned)-4) /* General purpose queue */
+
+/* queue flags */
+#define KNAV_QUEUE_SHARED 0x0001 /* Queue can be shared */
+
+/**
+ * enum knav_queue_ctrl_cmd - queue operations.
+ * @KNAV_QUEUE_GET_ID: Get the ID number for an open queue
+ * @KNAV_QUEUE_FLUSH: forcibly empty a queue if possible
+ * @KNAV_QUEUE_SET_NOTIFIER: Set a notifier callback to a queue handle.
+ * @KNAV_QUEUE_ENABLE_NOTIFY: Enable notifier callback for a queue handle.
+ * @KNAV_QUEUE_DISABLE_NOTIFY: Disable notifier callback for a queue handle.
+ * @KNAV_QUEUE_GET_COUNT: Get number of queues.
+ */
+enum knav_queue_ctrl_cmd {
+ KNAV_QUEUE_GET_ID,
+ KNAV_QUEUE_FLUSH,
+ KNAV_QUEUE_SET_NOTIFIER,
+ KNAV_QUEUE_ENABLE_NOTIFY,
+ KNAV_QUEUE_DISABLE_NOTIFY,
+ KNAV_QUEUE_GET_COUNT
+};
+
+/* Queue notifier callback prototype */
+typedef void (*knav_queue_notify_fn)(void *arg);
+
+/**
+ * struct knav_queue_notify_config: Notifier configuration
+ * @fn: Notifier function
+ * @fn_arg: Notifier function arguments
+ */
+struct knav_queue_notify_config {
+ knav_queue_notify_fn fn;
+ void *fn_arg;
+};
+
+void *knav_queue_open(const char *name, unsigned id,
+ unsigned flags);
+void knav_queue_close(void *qhandle);
+int knav_queue_device_control(void *qhandle,
+ enum knav_queue_ctrl_cmd cmd,
+ unsigned long arg);
+dma_addr_t knav_queue_pop(void *qhandle, unsigned *size);
+int knav_queue_push(void *qhandle, dma_addr_t dma,
+ unsigned size, unsigned flags);
+
+void *knav_pool_create(const char *name,
+ int num_desc, int region_id);
+void knav_pool_destroy(void *ph);
+int knav_pool_count(void *ph);
+void *knav_pool_desc_get(void *ph);
+void knav_pool_desc_put(void *ph, void *desc);
+int knav_pool_desc_map(void *ph, void *desc, unsigned size,
+ dma_addr_t *dma, unsigned *dma_sz);
+void *knav_pool_desc_unmap(void *ph, dma_addr_t dma, unsigned dma_sz);
+dma_addr_t knav_pool_desc_virt_to_dma(void *ph, void *virt);
+void *knav_pool_desc_dma_to_virt(void *ph, dma_addr_t dma);
+
+#endif /* __SOC_TI_KNAV_QMSS_H__ */