Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / tty / serial / cpm_uart / cpm_uart.h

diff --git a/kernel/drivers/tty/serial/cpm_uart/cpm_uart.h b/kernel/drivers/tty/serial/cpm_uart/cpm_uart.h
new file mode 100644 (file)
index 0000000..0ad027b
--- /dev/null
+++ b/kernel/drivers/tty/serial/cpm_uart/cpm_uart.h
@@ -0,0 +1,145 @@
+/*
+ *  Driver for CPM (SCC/SMC) serial ports
+ *
+ *  Copyright (C) 2004 Freescale Semiconductor, Inc.
+ *
+ *  2006 (c) MontaVista Software, Inc.
+ *     Vitaly Bordug <vbordug@ru.mvista.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ *
+ */
+#ifndef CPM_UART_H
+#define CPM_UART_H
+
+#include <linux/platform_device.h>
+#include <linux/fs_uart_pd.h>
+
+#if defined(CONFIG_CPM2)
+#include "cpm_uart_cpm2.h"
+#elif defined(CONFIG_CPM1)
+#include "cpm_uart_cpm1.h"
+#endif
+
+#define SERIAL_CPM_MAJOR       204
+#define SERIAL_CPM_MINOR       46
+
+#define IS_SMC(pinfo)          (pinfo->flags & FLAG_SMC)
+#define IS_DISCARDING(pinfo)   (pinfo->flags & FLAG_DISCARDING)
+#define FLAG_DISCARDING        0x00000004      /* when set, don't discard */
+#define FLAG_SMC       0x00000002
+#define FLAG_CONSOLE   0x00000001
+
+#define UART_SMC1      fsid_smc1_uart
+#define UART_SMC2      fsid_smc2_uart
+#define UART_SCC1      fsid_scc1_uart
+#define UART_SCC2      fsid_scc2_uart
+#define UART_SCC3      fsid_scc3_uart
+#define UART_SCC4      fsid_scc4_uart
+
+#define UART_NR                fs_uart_nr
+
+#define RX_NUM_FIFO    4
+#define RX_BUF_SIZE    32
+#define TX_NUM_FIFO    4
+#define TX_BUF_SIZE    32
+
+#define SCC_WAIT_CLOSING 100
+
+#define GPIO_CTS       0
+#define GPIO_RTS       1
+#define GPIO_DCD       2
+#define GPIO_DSR       3
+#define GPIO_DTR       4
+#define GPIO_RI                5
+
+#define NUM_GPIOS      (GPIO_RI+1)
+
+struct uart_cpm_port {
+       struct uart_port        port;
+       u16                     rx_nrfifos;
+       u16                     rx_fifosize;
+       u16                     tx_nrfifos;
+       u16                     tx_fifosize;
+       smc_t __iomem           *smcp;
+       smc_uart_t __iomem      *smcup;
+       scc_t __iomem           *sccp;
+       scc_uart_t __iomem      *sccup;
+       cbd_t __iomem           *rx_bd_base;
+       cbd_t __iomem           *rx_cur;
+       cbd_t __iomem           *tx_bd_base;
+       cbd_t __iomem           *tx_cur;
+       unsigned char           *tx_buf;
+       unsigned char           *rx_buf;
+       u32                     flags;
+       struct clk              *clk;
+       u8                      brg;
+       uint                     dp_addr;
+       void                    *mem_addr;
+       dma_addr_t               dma_addr;
+       u32                     mem_size;
+       /* wait on close if needed */
+       int                     wait_closing;
+       /* value to combine with opcode to form cpm command */
+       u32                     command;
+       int                     gpios[NUM_GPIOS];
+};
+
+extern int cpm_uart_nr;
+extern struct uart_cpm_port cpm_uart_ports[UART_NR];
+
+/* these are located in their respective files */
+void cpm_line_cr_cmd(struct uart_cpm_port *port, int cmd);
+void __iomem *cpm_uart_map_pram(struct uart_cpm_port *port,
+                               struct device_node *np);
+void cpm_uart_unmap_pram(struct uart_cpm_port *port, void __iomem *pram);
+int cpm_uart_init_portdesc(void);
+int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con);
+void cpm_uart_freebuf(struct uart_cpm_port *pinfo);
+
+void smc1_lineif(struct uart_cpm_port *pinfo);
+void smc2_lineif(struct uart_cpm_port *pinfo);
+void scc1_lineif(struct uart_cpm_port *pinfo);
+void scc2_lineif(struct uart_cpm_port *pinfo);
+void scc3_lineif(struct uart_cpm_port *pinfo);
+void scc4_lineif(struct uart_cpm_port *pinfo);
+
+/*
+   virtual to phys transtalion
+*/
+static inline unsigned long cpu2cpm_addr(void *addr,
+                                         struct uart_cpm_port *pinfo)
+{
+       int offset;
+       u32 val = (u32)addr;
+       u32 mem = (u32)pinfo->mem_addr;
+       /* sane check */
+       if (likely(val >= mem && val < mem + pinfo->mem_size)) {
+               offset = val - mem;
+               return pinfo->dma_addr + offset;
+       }
+       /* something nasty happened */
+       BUG();
+       return 0;
+}
+
+static inline void *cpm2cpu_addr(unsigned long addr,
+                                 struct uart_cpm_port *pinfo)
+{
+       int offset;
+       u32 val = addr;
+       u32 dma = (u32)pinfo->dma_addr;
+       /* sane check */
+       if (likely(val >= dma && val < dma + pinfo->mem_size)) {
+               offset = val - dma;
+               return pinfo->mem_addr + offset;
+       }
+       /* something nasty happened */
+       BUG();
+       return NULL;
+}
+
+
+#endif /* CPM_UART_H */