sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

chardriver upperCAN: support to independent set TX/RX FIFO size.

Browse Source 
support to independent set TX/RX FIFO size.

Signed-off-by: zhaohaiyang1 <zhaohaiyang1@xiaomi.com>
This commit is contained in:
zhaohaiyang1 2024-06-19 14:41:34 +08:00 committed by Lup Yuen Lee
parent 9b698b2304
commit 63515d584b
16 changed files with 101 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/platforms/arm/samv7/boards/same70-xplained/README.txt
View File

@ -695,7 +695,8 @@ MCAN1 Loopback Test
Device Drivers -> CAN Driver support
CONFIG_CAN=y # Enable the upper-half CAN driver
CONFIG_CAN_FIFOSIZE=8
CONFIG_CAN_TXFIFOSIZE=8
CONFIG_CAN_RXFIFOSIZE=8
CONFIG_CAN_NPENDINGRTR=4
System Type -> SAMV7 Peripheral Selections

3
Documentation/platforms/arm/samv7/boards/samv71-xult/README.txt
View File

@ -1288,7 +1288,8 @@ MCAN1 Loopback Test
Device Drivers -> CAN Driver support
CONFIG_CAN=y # Enable the upper-half CAN driver
CONFIG_CAN_FIFOSIZE=8
CONFIG_CAN_TXFIFOSIZE=8
CONFIG_CAN_RXFIFOSIZE=8
CONFIG_CAN_NPENDINGRTR=4
System Type -> SAMV7 Peripheral Selections

6
Documentation/platforms/arm/stm32f1/boards/cloudctrl/index.rst
View File

@ -385,7 +385,11 @@ Cloudctrl-specific Configuration Options
CONFIG_CAN - Enables CAN support (one or both of CONFIG_STM32_CAN1 or
CONFIG_STM32_CAN2 must also be defined)
CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.
Default: 4

6
Documentation/platforms/arm/stm32f1/boards/fire-stm32v2/index.rst
View File

@ -501,7 +501,11 @@ M3 Wildfire-specific Configuration Options
CONFIG_STM32_CAN2 must also be defined)
CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID. Default
Standard 11-bit IDs.
CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.
Default: 4

6
Documentation/platforms/arm/stm32f1/boards/hymini-stm32/index.rst
View File

@ -282,7 +282,11 @@ HY-Mini specific Configuration Options
CONFIG_STM32_CAN2 must also be defined)
CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID. Default
Standard 11-bit IDs.
CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.
Default: 4

6
Documentation/platforms/arm/stm32f1/boards/shenzhou/index.rst
View File

@ -395,7 +395,11 @@ Shenzhou-specific Configuration Options
CONFIG_CAN - Enables CAN support (one or both of CONFIG_STM32_CAN1 or
CONFIG_STM32_CAN2 must also be defined)
CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.
Default: 4

6
Documentation/platforms/arm/stm32f1/boards/stm3210e-eval/index.rst
View File

@ -444,7 +444,11 @@ STM3210E-EVAL-specific Configuration Options
CONFIG_STM32_CAN2 must also be defined)
CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID. Default
Standard 11-bit IDs.
CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.
Default: 4

6
Documentation/platforms/arm/stm32f1/boards/stm32_tiny/index.rst
View File

@ -231,7 +231,11 @@ STM32 Tiny - specific Configuration Options
CONFIG_STM32_CAN2 must also be defined)
CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID. Default
Standard 11-bit IDs.
CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.
Default: 4

6
Documentation/platforms/arm/stm32f1/boards/stm32f103-minimum/index.rst
View File

@ -740,7 +740,11 @@ STM32F103 Minimum - specific Configuration Options
CONFIG_STM32_CAN2 must also be defined)
CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID. Default
Standard 11-bit IDs.
CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.
Default: 4

7
Documentation/platforms/arm/stm32f2/index.rst
View File

@ -93,7 +93,12 @@ CAN
- CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID.
Default Standard 11-bit IDs.
- CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
- CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
- CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
- CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.

7
Documentation/platforms/arm/stm32f3/index.rst
View File

@ -140,7 +140,12 @@ CAN character device
- CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID. Default
Standard 11-bit IDs.
- CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
- CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
- CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
- CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.

7
Documentation/platforms/arm/stm32f4/index.rst
View File

@ -144,7 +144,12 @@ CAN
- CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID. Default
Standard 11-bit IDs.
- CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
- CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
- CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
- CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.

8
Documentation/platforms/arm/stm32f7/index.rst
View File

@ -189,7 +189,13 @@ CAN
- CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID. Default Standard 11-bit IDs.
- CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages. Default: 8
- CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
of CAN messages.
Default: 8
- CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
of CAN messages.
Default: 8
- CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests. Default: 4

14
drivers/can/Kconfig
View File

@ -39,11 +39,19 @@ config CAN_FD
---help---
Enables support for the CAN_FD mode.
config CAN_FIFOSIZE
int "CAN driver I/O buffer size"
config CAN_TXFIFOSIZE
int "CAN driver I/O tx buffer size"
default 8
range 1 255
---help---
The size of the circular buffer of CAN messages. Default: 8
The size of the circular tx buffer of CAN messages. Default: 8
config CAN_RXFIFOSIZE
int "CAN driver I/O rx buffer size"
default 8
range 1 255
---help---
The size of the circular rx buffer of CAN messages. Default: 8
config CAN_NPENDINGRTR
int "Number of pending RTRs"

14
drivers/can/can.c
View File

@ -465,7 +465,7 @@ static ssize_t can_read(FAR struct file *filep, FAR char *buffer,
/* Increment the head of the circular message buffer */
if (++fifo->rx_head >= CONFIG_CAN_FIFOSIZE)
if (++fifo->rx_head >= CONFIG_CAN_RXFIFOSIZE)
{
fifo->rx_head = 0;
}
@ -549,7 +549,7 @@ static int can_xmit(FAR struct can_dev_s *dev)
*/
tmpndx = dev->cd_xmit.tx_queue;
if (++dev->cd_xmit.tx_queue >= CONFIG_CAN_FIFOSIZE)
if (++dev->cd_xmit.tx_queue >= CONFIG_CAN_TXFIFOSIZE)
{
dev->cd_xmit.tx_queue = 0;
}
@ -615,7 +615,7 @@ static ssize_t can_write(FAR struct file *filep, FAR const char *buffer,
*/
nexttail = fifo->tx_tail + 1;
if (nexttail >= CONFIG_CAN_FIFOSIZE)
if (nexttail >= CONFIG_CAN_TXFIFOSIZE)
{
nexttail = 0;
}
@ -885,7 +885,7 @@ static int can_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
case FIONWRITE:
{
*(FAR uint8_t *)arg = CONFIG_CAN_FIFOSIZE - 1 -
*(FAR uint8_t *)arg = CONFIG_CAN_TXFIFOSIZE - 1 -
(dev->cd_xmit.tx_tail - dev->cd_xmit.tx_head);
}
break;
@ -1044,7 +1044,7 @@ static int can_poll(FAR struct file *filep, FAR struct pollfd *fds,
*/
ndx = dev->cd_xmit.tx_tail + 1;
if (ndx >= CONFIG_CAN_FIFOSIZE)
if (ndx >= CONFIG_CAN_TXFIFOSIZE)
{
ndx = 0;
}
@ -1235,7 +1235,7 @@ int can_receive(FAR struct can_dev_s *dev, FAR struct can_hdr_s *hdr,
fifo = &reader->fifo;
nexttail = fifo->rx_tail + 1;
if (nexttail >= CONFIG_CAN_FIFOSIZE)
if (nexttail >= CONFIG_CAN_RXFIFOSIZE)
{
nexttail = 0;
}
@ -1405,7 +1405,7 @@ int can_txdone(FAR struct can_dev_s *dev)
/* Remove the message at the head of the xmit FIFO */
if (++dev->cd_xmit.tx_head >= CONFIG_CAN_FIFOSIZE)
if (++dev->cd_xmit.tx_head >= CONFIG_CAN_TXFIFOSIZE)
{
dev->cd_xmit.tx_head = 0;
}

27
include/nuttx/can/can.h
View File

@ -59,7 +59,11 @@
* CONFIG_CAN_FD - Enable support for CAN FD mode.
* For the upper half driver, this just means handling encoded DLC values
* (for values of DLC > 9).
* CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
* CONFIG_CAN_TXFIFOSIZE - The size of the circular tx buffer
* of CAN messages.
* Default: 8
* CONFIG_CAN_RXFIFOSIZE - The size of the circular rx buffer
* of CAN messages.
* Default: 8
* CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.
* Default: 4
@ -81,11 +85,18 @@
* The configured size is limited to 255 to fit into a uint8_t.
*/
#if !defined(CONFIG_CAN_FIFOSIZE)
# define CONFIG_CAN_FIFOSIZE 8
#elif CONFIG_CAN_FIFOSIZE > 255
# undef CONFIG_CAN_FIFOSIZE
# define CONFIG_CAN_FIFOSIZE 255
#if !defined(CONFIG_CAN_TXFIFOSIZE)
# define CONFIG_CAN_TXFIFOSIZE 8
#elif CONFIG_CAN_TXFIFOSIZE > 255
# undef CONFIG_CAN_TXFIFOSIZE
# define CONFIG_CAN_TXFIFOSIZE 255
#endif
#if !defined(CONFIG_CAN_RXFIFOSIZE)
# define CONFIG_CAN_RXFIFOSIZE 8
#elif CONFIG_CAN_RXFIFOSIZE > 255
# undef CONFIG_CAN_RXFIFOSIZE
# define CONFIG_CAN_RXFIFOSIZE 255
#endif
#if !defined(CONFIG_CAN_NPENDINGRTR)
@ -622,7 +633,7 @@ struct can_rxfifo_s
uint8_t rx_head; /* Index to the head [IN] in the circular buffer */
uint8_t rx_tail; /* Index to the tail [OUT] in the circular buffer */
/* Circular buffer of CAN messages */
struct can_msg_s rx_buffer[CONFIG_CAN_FIFOSIZE];
struct can_msg_s rx_buffer[CONFIG_CAN_RXFIFOSIZE];
};
struct can_txfifo_s
@ -632,7 +643,7 @@ struct can_txfifo_s
uint8_t tx_queue; /* Index to next message to send */
uint8_t tx_tail; /* Index to the tail [OUT] in the circular buffer */
/* Circular buffer of CAN messages */
struct can_msg_s tx_buffer[CONFIG_CAN_FIFOSIZE];
struct can_msg_s tx_buffer[CONFIG_CAN_TXFIFOSIZE];
};
/* The following structure define the logic to handle