keystone2: add keystone multicore navigator driver

Multicore navigator consists of Network Coprocessor (NetCP) and
Queue Manager sub system. More details on the hardware can
be obtained from the following links:-

Network Coprocessor: http://www.ti.com/lit/pdf/sprugz6
Multicore Navigator: http://www.ti.com/lit/pdf/sprugr9

Multicore navigator driver implements APIs to configure
the Queue Manager and NetCP Pkt DMA.

Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Acked-by: Tom Rini <trini@ti.com>

1 files changed, 193 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-keystone/keystone_nav.h b/arch/arm/include/asm/arch-keystone/keystone_nav.h
new file mode 100644
index 0000000..ab81eaf
--- /dev/null
+++ b/arch/arm/include/asm/arch-keystone/keystone_nav.h
@@ -0,0 +1,193 @@
+/*
+ * 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>
+
+enum soc_type_t {
+	k2hk
+};
+
+#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_ */