mirror of
https://github.com/apache/nuttx.git
synced 2026-05-21 13:13:08 +08:00
drivers: prepare 16550 UART driver to support PCI
prepare 16550 UART driver to support PCI: - [breaking change] change argument of uart_ioctl() from `struct file *filep` to `FAR struct u16550_s *priv` Also fix moxart_16550.c build related to this change - [breaking change] change argument of uart_getreg() and uart_putreg from `uart_addrwidth_t base` to `FAR struct u16550_s *priv` Also fix arch/x86/src/qemu/qemu_serial.c and arch/x86_64/src/intel64/intel64_serial.c related to this change - [breaking change] change argument of uart_dmachan() from `uart_addrwidth_t base` to `FAR struct u16550_s *priv` - move `struct u16550_s` to public header - generalize UART_XXX_OFFSET so we can use it with any register increment - make u16550_bind(), u16550_interrupt(), u16550_interrupt() public - remove arch/or1k/src/common/or1k_uart.c and use common 16550 MIMO interfacve - change irq type in `struct u16550_s` from uint8_t to int to match MSI API Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
This commit is contained in:
p-szafonimateusz
committed by
Xiang Xiao
Xiang Xiao
parent
c7e8fd43a4
commit
ceb2921d79
@@ -69,15 +69,12 @@ void uart_decodeirq(int irq, void *context)
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}
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#ifdef CONFIG_SERIAL_UART_ARCH_IOCTL
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int uart_ioctl(struct file *filep, int cmd, unsigned long arg)
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int uart_ioctl(FAR struct u16550_s *priv, int cmd, unsigned long arg)
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{
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struct inode *inode = filep->f_inode;
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struct uart_dev_s *dev = inode->i_private;
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struct u16550_s *priv = (struct u16550_s *)dev->priv;
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int ret = -ENOTTY;
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uint32_t vmode;
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unsigned int opmode;
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int bitm_off;
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int ret = -ENOTTY;
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uint32_t vmode;
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unsigned int opmode;
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int bitm_off;
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/* TODO: calculate bit offset from UART_BASE address.
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* E.g.:
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@@ -1,45 +0,0 @@
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/****************************************************************************
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* arch/or1k/src/common/or1k_uart.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/arch.h>
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#include <nuttx/serial/uart_16550.h>
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#include "or1k_internal.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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uart_datawidth_t uart_getreg(uart_addrwidth_t base, unsigned int offset)
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{
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return *(uint8_t *)(base + offset);
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}
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void uart_putreg(uart_addrwidth_t base, unsigned int offset,
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uart_datawidth_t value)
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{
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*(uint8_t *)(base + offset) = value;
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}
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@@ -40,7 +40,6 @@ CMN_CSRCS = or1k_initialize.c \
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or1k_idle.c \
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or1k_irq.c \
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or1k_nputs.c \
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or1k_uart.c \
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or1k_timer.c \
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or1k_doirq.c \
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or1k_cpuinfo.c \
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@@ -52,15 +52,15 @@
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*
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****************************************************************************/
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uart_datawidth_t uart_getreg(uart_addrwidth_t base, unsigned int offset)
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uart_datawidth_t uart_getreg(struct u16550_s *priv, unsigned int offset)
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{
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return inb(base + offset);
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return inb(priv->uartbase + offset);
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}
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void uart_putreg(uart_addrwidth_t base,
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void uart_putreg(struct u16550_s *priv,
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unsigned int offset, uart_datawidth_t value)
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{
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outb(value, base + offset);
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outb(value, priv->uartbase + offset);
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}
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#else /* USE_SERIALDRIVER */
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@@ -52,12 +52,12 @@
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*
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****************************************************************************/
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uart_datawidth_t uart_getreg(uart_addrwidth_t base, unsigned int offset)
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uart_datawidth_t uart_getreg(struct u16550_s *priv, unsigned int offset)
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{
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return inb(base + offset);
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return inb(priv->uartbase + offset);
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}
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void uart_putreg(uart_addrwidth_t base, unsigned int offset,
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void uart_putreg(struct u16550_s *priv, unsigned int offset,
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uart_datawidth_t value)
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{
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/* Intel x86 platform require OUT2 of MCR being set
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@@ -69,7 +69,7 @@ void uart_putreg(uart_addrwidth_t base, unsigned int offset,
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value |= UART_MCR_OUT2;
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}
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outb(value, base + offset);
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outb(value, priv->uartbase + offset);
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}
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#else /* USE_SERIALDRIVER */
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@@ -84,6 +84,7 @@ CONFIG_PTHREAD_STACK_DEFAULT=1024
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CONFIG_RAM_SIZE=4194304
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CONFIG_RAM_START=0x0000
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CONFIG_RAW_BINARY=y
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CONFIG_SERIAL_UART_ARCH_MMIO=y
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CONFIG_START_DAY=7
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CONFIG_START_MONTH=12
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CONFIG_START_YEAR=2012
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+233
-178
File diff suppressed because it is too large
Load Diff
@@ -27,7 +27,8 @@
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <nuttx/serial/serial.h>
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#ifdef CONFIG_16550_UART
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@@ -37,12 +38,10 @@
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/* CONFIGURATION ************************************************************/
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/* Are any UARTs enabled? */
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#undef HAVE_UART
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#if defined(CONFIG_16550_UART0) || defined(CONFIG_16550_UART1) || \
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defined(CONFIG_16550_UART2) || defined(CONFIG_16550_UART3)
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# define HAVE_UART 1
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#undef HAVE_16550_UART_DMA
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#if defined(CONFIG_16550_UART0_DMA) || defined(CONFIG_16550_UART1_DMA) || \
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defined(CONFIG_16550_UART2_DMA) || defined(CONFIG_16550_UART3_DMA)
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# define HAVE_16550_UART_DMA 1
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#endif
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/* We need to be told the address increment between registers and the
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@@ -173,33 +172,20 @@
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/* Register offsets *********************************************************/
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#define UART_RBR_INCR 0 /* (DLAB =0) Receiver Buffer Register */
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#define UART_THR_INCR 0 /* (DLAB =0) Transmit Holding Register */
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#define UART_DLL_INCR 0 /* (DLAB =1) Divisor Latch LSB */
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#define UART_DLM_INCR 1 /* (DLAB =1) Divisor Latch MSB */
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#define UART_IER_INCR 1 /* (DLAB =0) Interrupt Enable Register */
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#define UART_IIR_INCR 2 /* Interrupt ID Register */
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#define UART_FCR_INCR 2 /* FIFO Control Register */
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#define UART_LCR_INCR 3 /* Line Control Register */
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#define UART_MCR_INCR 4 /* Modem Control Register */
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#define UART_LSR_INCR 5 /* Line Status Register */
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#define UART_MSR_INCR 6 /* Modem Status Register */
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#define UART_SCR_INCR 7 /* Scratch Pad Register */
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#define UART_USR_INCR 31 /* UART Status Register */
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#define UART_RBR_OFFSET (CONFIG_16550_REGINCR*UART_RBR_INCR)
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#define UART_THR_OFFSET (CONFIG_16550_REGINCR*UART_THR_INCR)
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#define UART_DLL_OFFSET (CONFIG_16550_REGINCR*UART_DLL_INCR)
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#define UART_DLM_OFFSET (CONFIG_16550_REGINCR*UART_DLM_INCR)
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#define UART_IER_OFFSET (CONFIG_16550_REGINCR*UART_IER_INCR)
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#define UART_IIR_OFFSET (CONFIG_16550_REGINCR*UART_IIR_INCR)
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#define UART_FCR_OFFSET (CONFIG_16550_REGINCR*UART_FCR_INCR)
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#define UART_LCR_OFFSET (CONFIG_16550_REGINCR*UART_LCR_INCR)
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#define UART_MCR_OFFSET (CONFIG_16550_REGINCR*UART_MCR_INCR)
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#define UART_LSR_OFFSET (CONFIG_16550_REGINCR*UART_LSR_INCR)
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#define UART_MSR_OFFSET (CONFIG_16550_REGINCR*UART_MSR_INCR)
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#define UART_SCR_OFFSET (CONFIG_16550_REGINCR*UART_SCR_INCR)
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#define UART_USR_OFFSET (CONFIG_16550_REGINCR*UART_USR_INCR)
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#define UART_RBR_OFFSET 0 /* (DLAB =0) Receiver Buffer Register */
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#define UART_THR_OFFSET 0 /* (DLAB =0) Transmit Holding Register */
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#define UART_DLL_OFFSET 0 /* (DLAB =1) Divisor Latch LSB */
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#define UART_DLM_OFFSET 1 /* (DLAB =1) Divisor Latch MSB */
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#define UART_IER_OFFSET 1 /* (DLAB =0) Interrupt Enable Register */
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#define UART_IIR_OFFSET 2 /* Interrupt ID Register */
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#define UART_FCR_OFFSET 2 /* FIFO Control Register */
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#define UART_LCR_OFFSET 3 /* Line Control Register */
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#define UART_MCR_OFFSET 4 /* Modem Control Register */
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#define UART_LSR_OFFSET 5 /* Line Status Register */
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#define UART_MSR_OFFSET 6 /* Modem Status Register */
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#define UART_SCR_OFFSET 7 /* Scratch Pad Register */
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#define UART_USR_OFFSET 31 /* UART Status Register */
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#define UART_DLF_OFFSET 48 /* Divisor Latch Fraction Register */
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/* Register bit definitions *************************************************/
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@@ -333,6 +319,64 @@ typedef uint64_t uart_addrwidth_t;
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* Public Data
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****************************************************************************/
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/* UART 16550 ops */
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struct u16550_s;
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struct u16550_ops_s
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{
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CODE int (*isr)(int irq, FAR void *context, FAR void *arg);
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CODE uart_datawidth_t (*getreg)(FAR struct u16550_s *priv,
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unsigned int offset);
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CODE void (*putreg)(FAR struct u16550_s *priv,
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unsigned int offset,
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uart_datawidth_t value);
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CODE int (*ioctl)(FAR struct u16550_s *priv, int cmd, unsigned long arg);
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CODE FAR struct dma_chan_s *(*dmachan)(FAR struct u16550_s *priv,
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unsigned int ident);
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};
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/* UART 16550 private data */
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struct u16550_s
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{
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/* UART 16550 operations */
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FAR const struct u16550_ops_s *ops;
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uart_addrwidth_t uartbase; /* Base address of UART registers */
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uint8_t regincr;
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#ifdef HAVE_16550_UART_DMA
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int32_t dmatx;
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FAR struct dma_chan_s *chantx;
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int32_t dmarx;
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FAR struct dma_chan_s *chanrx;
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FAR char *dmarxbuf;
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size_t dmarxsize;
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volatile size_t dmarxhead;
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volatile size_t dmarxtail;
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int32_t dmarxtimeout;
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#endif
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#if !defined(CONFIG_16550_SUPRESS_CONFIG) || defined(HAVE_16550_UART_DMA)
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uint32_t baud; /* Configured baud */
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uint32_t uartclk; /* UART clock frequency */
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#endif
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#ifdef CONFIG_CLK
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FAR const char *clk_name; /* UART clock name */
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FAR struct clk_s *mclk; /* UART clock descriptor */
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#endif
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uart_datawidth_t ier; /* Saved IER value */
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int irq; /* IRQ associated with this UART */
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#ifndef CONFIG_16550_SUPRESS_CONFIG
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uint8_t parity; /* 0=none, 1=odd, 2=even */
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uint8_t bits; /* Number of bits (7 or 8) */
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bool stopbits2; /* true: Configure with 2 stop bits instead of 1 */
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#if defined(CONFIG_SERIAL_IFLOWCONTROL) || defined(CONFIG_SERIAL_OFLOWCONTROL)
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bool flow; /* flow control (RTS/CTS) enabled */
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#endif
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#endif
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uart_datawidth_t rxtrigger; /* RX trigger level */
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};
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/****************************************************************************
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* Public Functions Definitions
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****************************************************************************/
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@@ -363,6 +407,36 @@ void u16550_earlyserialinit(void);
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void u16550_serialinit(void);
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/****************************************************************************
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* Name: u16550_bind
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*
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* Description:
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* Bind 16550 compatible device with this driver.
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*
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****************************************************************************/
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int u16550_bind(FAR uart_dev_t *dev);
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/****************************************************************************
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* Name: u16550_interrupt
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*
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* Description:
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* Handle UART 16550 interrupt.
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*
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****************************************************************************/
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int u16550_interrupt(int irq, FAR void *context, FAR void *arg);
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/****************************************************************************
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* Name: u16550_putc
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*
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* Description:
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* Write one character to the UART (polled)
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*
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****************************************************************************/
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void u16550_putc(FAR struct u16550_s *priv, int ch);
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/****************************************************************************
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* Name: uart_getreg(), uart_putreg(), uart_ioctl()
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*
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@@ -374,17 +448,16 @@ void u16550_serialinit(void);
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****************************************************************************/
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#ifndef CONFIG_SERIAL_UART_ARCH_MMIO
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uart_datawidth_t uart_getreg(uart_addrwidth_t base, unsigned int offset);
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void uart_putreg(uart_addrwidth_t base,
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uart_datawidth_t uart_getreg(FAR struct u16550_s *priv, unsigned int offset);
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void uart_putreg(FAR struct u16550_s *priv,
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unsigned int offset,
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uart_datawidth_t value);
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#endif
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struct file; /* Forward reference */
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int uart_ioctl(struct file *filep, int cmd, unsigned long arg);
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int uart_ioctl(FAR struct u16550_s *priv, int cmd, unsigned long arg);
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struct dma_chan_s;
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FAR struct dma_chan_s *uart_dmachan(uart_addrwidth_t base,
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FAR struct dma_chan_s *uart_dmachan(FAR struct u16550_s *priv,
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unsigned int ident);
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#endif /* CONFIG_16550_UART */
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