dma: keystone_nav: move keystone_nav driver to driver/dma/

The keystone_nav is used by drivers/net/keystone_net.c driver to
send and receive packets, but currently it's placed at keystone
arch sources. So it should be in the drivers directory also.
It's separate driver that can be used for sending and receiving
pktdma packets by others drivers also.

This patch just move this driver to appropriate directory and
doesn't add any functional changes.

Acked-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>

1 files changed, 189 insertions, 0 deletions

diff --git a/arch/arm/include/asm/ti-common/keystone_nav.h b/arch/arm/include/asm/ti-common/keystone_nav.h
new file mode 100644
index 0000000000..646c2f3a56
--- /dev/null
+++ b/arch/arm/include/asm/ti-common/keystone_nav.h
@@ -0,0 +1,189 @@
+/*
+ * Multicore Navigator definitions
+ *
+ * (C) Copyright 2012-2014
+ *     Texas Instruments Incorporated, <www.ti.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef _KEYSTONE_NAV_H_
+#define _KEYSTONE_NAV_H_
+
+#include <asm/arch/hardware.h>
+#include <asm/io.h>
+
+#define QM_OK                    0
+#define QM_ERR                  -1
+#define QM_DESC_TYPE_HOST        0
+#define QM_DESC_PSINFO_IN_DESCR  0
+#define QM_DESC_DEFAULT_DESCINFO    (QM_DESC_TYPE_HOST << 30) | \
+					(QM_DESC_PSINFO_IN_DESCR << 22)
+
+/* Packet Info */
+#define QM_DESC_PINFO_EPIB              1
+#define QM_DESC_PINFO_RETURN_OWN        1
+#define QM_DESC_DEFAULT_PINFO           (QM_DESC_PINFO_EPIB << 31) | \
+					(QM_DESC_PINFO_RETURN_OWN << 15)
+
+struct qm_cfg_reg {
+	u32	revision;
+	u32	__pad1;
+	u32	divert;
+	u32	link_ram_base0;
+	u32	link_ram_size0;
+	u32	link_ram_base1;
+	u32	link_ram_size1;
+	u32	link_ram_base2;
+	u32	starvation[0];
+};
+
+struct	descr_mem_setup_reg {
+	u32	base_addr;
+	u32	start_idx;
+	u32	desc_reg_size;
+	u32	_res0;
+};
+
+struct qm_reg_queue {
+	u32	entry_count;
+	u32	byte_count;
+	u32	packet_size;
+	u32	ptr_size_thresh;
+};
+
+struct qm_config {
+	/* QM module addresses */
+	u32	stat_cfg;	/* status and config		*/
+	struct qm_reg_queue *queue;	/* management region	*/
+	u32	mngr_vbusm;	/* management region (VBUSM)	*/
+	u32	i_lram;		/* internal linking RAM		*/
+	struct qm_reg_queue *proxy;
+	u32	status_ram;
+	struct qm_cfg_reg *mngr_cfg;
+				/* Queue manager config region	*/
+	u32	intd_cfg;	/* QMSS INTD config region	*/
+	struct	descr_mem_setup_reg *desc_mem;
+				/* descritor memory setup region*/
+	u32	region_num;
+	u32	pdsp_cmd;	/* PDSP1 command interface	*/
+	u32	pdsp_ctl;	/* PDSP1 control registers	*/
+	u32	pdsp_iram;
+	/* QM configuration parameters */
+
+	u32	qpool_num;	/* */
+};
+
+struct qm_host_desc {
+	u32 desc_info;
+	u32 tag_info;
+	u32 packet_info;
+	u32 buff_len;
+	u32 buff_ptr;
+	u32 next_bdptr;
+	u32 orig_buff_len;
+	u32 orig_buff_ptr;
+	u32 timestamp;
+	u32 swinfo[3];
+	u32 ps_data[20];
+};
+
+#define HDESC_NUM        256
+
+int	qm_init(void);
+void	qm_close(void);
+void	qm_push(struct qm_host_desc *hd, u32 qnum);
+struct qm_host_desc *qm_pop(u32 qnum);
+
+void	qm_buff_push(struct qm_host_desc *hd, u32 qnum,
+		     void *buff_ptr, u32 buff_len);
+
+struct	qm_host_desc *qm_pop_from_free_pool(void);
+void	queue_close(u32 qnum);
+
+/*
+ * DMA API
+ */
+#define CPDMA_REG_VAL_MAKE_RX_FLOW_A(einfo, psinfo, rxerr, desc, \
+				     psloc, sopoff, qmgr, qnum) \
+	(((einfo & 1) << 30)  | \
+	 ((psinfo & 1) << 29) | \
+	 ((rxerr & 1) << 28)  | \
+	 ((desc & 3) << 26)   | \
+	 ((psloc & 1) << 25)  | \
+	 ((sopoff & 0x1ff) << 16) | \
+	 ((qmgr & 3) << 12)   | \
+	 ((qnum & 0xfff) << 0))
+
+#define CPDMA_REG_VAL_MAKE_RX_FLOW_D(fd0qm, fd0qnum, fd1qm, fd1qnum) \
+	(((fd0qm & 3) << 28)  | \
+	 ((fd0qnum & 0xfff) << 16) | \
+	 ((fd1qm & 3) << 12)  | \
+	 ((fd1qnum & 0xfff) <<  0))
+
+#define CPDMA_CHAN_A_ENABLE ((u32)1 << 31)
+#define CPDMA_CHAN_A_TDOWN  (1 << 30)
+#define TDOWN_TIMEOUT_COUNT  100
+
+struct global_ctl_regs {
+	u32	revision;
+	u32	perf_control;
+	u32	emulation_control;
+	u32	priority_control;
+	u32	qm_base_addr[4];
+};
+
+struct tx_chan_regs {
+	u32	cfg_a;
+	u32	cfg_b;
+	u32	res[6];
+};
+
+struct rx_chan_regs {
+	u32	cfg_a;
+	u32	res[7];
+};
+
+struct rx_flow_regs {
+	u32	control;
+	u32	tags;
+	u32	tag_sel;
+	u32	fdq_sel[2];
+	u32	thresh[3];
+};
+
+struct pktdma_cfg {
+	struct global_ctl_regs	*global;
+	struct tx_chan_regs	*tx_ch;
+	u32			tx_ch_num;
+	struct rx_chan_regs	*rx_ch;
+	u32			rx_ch_num;
+	u32			*tx_sched;
+	struct rx_flow_regs	*rx_flows;
+	u32			rx_flow_num;
+
+	u32			rx_free_q;
+	u32			rx_rcv_q;
+	u32			tx_snd_q;
+
+	u32			rx_flow; /* flow that is used for RX */
+};
+
+/*
+ * packet dma user allocates memory for rx buffers
+ * and describe it in the following structure
+ */
+struct rx_buff_desc {
+	u8	*buff_ptr;
+	u32	num_buffs;
+	u32	buff_len;
+	u32	rx_flow;
+};
+
+int netcp_close(void);
+int netcp_init(struct rx_buff_desc *rx_buffers);
+int netcp_send(u32 *pkt, int num_bytes, u32 swinfo2);
+void *netcp_recv(u32 **pkt, int *num_bytes);
+void netcp_release_rxhd(void *hd);
+
+#endif  /* _KEYSTONE_NAV_H_ */