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Re: [PATCH 1/9] dev-serial: style changes to improve readability and che
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From: |
Samuel Thibault |
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Subject: |
Re: [PATCH 1/9] dev-serial: style changes to improve readability and checkpatch fixes |
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Date: |
Mon, 26 Oct 2020 10:35:40 +0100 |
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User-agent: |
NeoMutt/20170609 (1.8.3) |
Mark Cave-Ayland, le lun. 26 oct. 2020 08:33:53 +0000, a ecrit:
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Samuel thibault <samuel.thibault@ens-lyon.org>
> ---
> hw/usb/dev-serial.c | 230 ++++++++++++++++++++++++--------------------
> 1 file changed, 126 insertions(+), 104 deletions(-)
>
> diff --git a/hw/usb/dev-serial.c b/hw/usb/dev-serial.c
> index b1622b7c7f..7a5fa3770e 100644
> --- a/hw/usb/dev-serial.c
> +++ b/hw/usb/dev-serial.c
> @@ -33,72 +33,75 @@ do { printf("usb-serial: " fmt , ## __VA_ARGS__); } while
> (0)
> #define RECV_BUF (512 - (2 * 8))
>
> /* Commands */
> -#define FTDI_RESET 0
> -#define FTDI_SET_MDM_CTRL 1
> -#define FTDI_SET_FLOW_CTRL 2
> -#define FTDI_SET_BAUD 3
> -#define FTDI_SET_DATA 4
> -#define FTDI_GET_MDM_ST 5
> -#define FTDI_SET_EVENT_CHR 6
> -#define FTDI_SET_ERROR_CHR 7
> -#define FTDI_SET_LATENCY 9
> -#define FTDI_GET_LATENCY 10
> -
> -#define DeviceOutVendor
> ((USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8)
> -#define DeviceInVendor ((USB_DIR_IN
> |USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8)
> +#define FTDI_RESET 0
> +#define FTDI_SET_MDM_CTRL 1
> +#define FTDI_SET_FLOW_CTRL 2
> +#define FTDI_SET_BAUD 3
> +#define FTDI_SET_DATA 4
> +#define FTDI_GET_MDM_ST 5
> +#define FTDI_SET_EVENT_CHR 6
> +#define FTDI_SET_ERROR_CHR 7
> +#define FTDI_SET_LATENCY 9
> +#define FTDI_GET_LATENCY 10
> +
> +#define DeviceOutVendor \
> + ((USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE) << 8)
> +#define DeviceInVendor \
> + ((USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE) << 8)
>
> /* RESET */
>
> -#define FTDI_RESET_SIO 0
> -#define FTDI_RESET_RX 1
> -#define FTDI_RESET_TX 2
> +#define FTDI_RESET_SIO 0
> +#define FTDI_RESET_RX 1
> +#define FTDI_RESET_TX 2
>
> /* SET_MDM_CTRL */
>
> -#define FTDI_DTR 1
> -#define FTDI_SET_DTR (FTDI_DTR << 8)
> -#define FTDI_RTS 2
> -#define FTDI_SET_RTS (FTDI_RTS << 8)
> +#define FTDI_DTR 1
> +#define FTDI_SET_DTR (FTDI_DTR << 8)
> +#define FTDI_RTS 2
> +#define FTDI_SET_RTS (FTDI_RTS << 8)
>
> /* SET_FLOW_CTRL */
>
> -#define FTDI_RTS_CTS_HS 1
> -#define FTDI_DTR_DSR_HS 2
> -#define FTDI_XON_XOFF_HS 4
> +#define FTDI_RTS_CTS_HS 1
> +#define FTDI_DTR_DSR_HS 2
> +#define FTDI_XON_XOFF_HS 4
>
> /* SET_DATA */
>
> -#define FTDI_PARITY (0x7 << 8)
> -#define FTDI_ODD (0x1 << 8)
> -#define FTDI_EVEN (0x2 << 8)
> -#define FTDI_MARK (0x3 << 8)
> -#define FTDI_SPACE (0x4 << 8)
> +#define FTDI_PARITY (0x7 << 8)
> +#define FTDI_ODD (0x1 << 8)
> +#define FTDI_EVEN (0x2 << 8)
> +#define FTDI_MARK (0x3 << 8)
> +#define FTDI_SPACE (0x4 << 8)
>
> -#define FTDI_STOP (0x3 << 11)
> -#define FTDI_STOP1 (0x0 << 11)
> -#define FTDI_STOP15 (0x1 << 11)
> -#define FTDI_STOP2 (0x2 << 11)
> +#define FTDI_STOP (0x3 << 11)
> +#define FTDI_STOP1 (0x0 << 11)
> +#define FTDI_STOP15 (0x1 << 11)
> +#define FTDI_STOP2 (0x2 << 11)
>
> /* GET_MDM_ST */
> /* TODO: should be sent every 40ms */
> -#define FTDI_CTS (1<<4) // CTS line status
> -#define FTDI_DSR (1<<5) // DSR line status
> -#define FTDI_RI (1<<6) // RI line status
> -#define FTDI_RLSD (1<<7) // Receive Line Signal Detect
> +#define FTDI_CTS (1 << 4) /* CTS line status */
> +#define FTDI_DSR (1 << 5) /* DSR line status */
> +#define FTDI_RI (1 << 6) /* RI line status */
> +#define FTDI_RLSD (1 << 7) /* Receive Line Signal Detect */
>
> /* Status */
>
> -#define FTDI_DR (1<<0) // Data Ready
> -#define FTDI_OE (1<<1) // Overrun Err
> -#define FTDI_PE (1<<2) // Parity Err
> -#define FTDI_FE (1<<3) // Framing Err
> -#define FTDI_BI (1<<4) // Break Interrupt
> -#define FTDI_THRE (1<<5) // Transmitter Holding Register
> -#define FTDI_TEMT (1<<6) // Transmitter Empty
> -#define FTDI_FIFO (1<<7) // Error in FIFO
> +#define FTDI_DR (1 << 0) /* Data Ready */
> +#define FTDI_OE (1 << 1) /* Overrun Err */
> +#define FTDI_PE (1 << 2) /* Parity Err */
> +#define FTDI_FE (1 << 3) /* Framing Err */
> +#define FTDI_BI (1 << 4) /* Break Interrupt */
> +#define FTDI_THRE (1 << 5) /* Transmitter Holding Register */
> +#define FTDI_TEMT (1 << 6) /* Transmitter Empty */
> +#define FTDI_FIFO (1 << 7) /* Error in FIFO */
>
> struct USBSerialState {
> USBDevice dev;
> +
> USBEndpoint *intr;
> uint8_t recv_buf[RECV_BUF];
> uint16_t recv_ptr;
> @@ -216,29 +219,34 @@ static uint8_t usb_get_modem_lines(USBSerialState *s)
>
> if (qemu_chr_fe_ioctl(&s->cs,
> CHR_IOCTL_SERIAL_GET_TIOCM, &flags) == -ENOTSUP) {
> - return FTDI_CTS|FTDI_DSR|FTDI_RLSD;
> + return FTDI_CTS | FTDI_DSR | FTDI_RLSD;
> }
>
> ret = 0;
> - if (flags & CHR_TIOCM_CTS)
> + if (flags & CHR_TIOCM_CTS) {
> ret |= FTDI_CTS;
> - if (flags & CHR_TIOCM_DSR)
> + }
> + if (flags & CHR_TIOCM_DSR) {
> ret |= FTDI_DSR;
> - if (flags & CHR_TIOCM_RI)
> + }
> + if (flags & CHR_TIOCM_RI) {
> ret |= FTDI_RI;
> - if (flags & CHR_TIOCM_CAR)
> + }
> + if (flags & CHR_TIOCM_CAR) {
> ret |= FTDI_RLSD;
> + }
>
> return ret;
> }
>
> static void usb_serial_handle_control(USBDevice *dev, USBPacket *p,
> - int request, int value, int index, int length, uint8_t *data)
> + int request, int value, int index,
> + int length, uint8_t *data)
> {
> USBSerialState *s = (USBSerialState *)dev;
> int ret;
>
> - DPRINTF("got control %x, value %x\n",request, value);
> + DPRINTF("got control %x, value %x\n", request, value);
> ret = usb_desc_handle_control(dev, p, request, value, index, length,
> data);
> if (ret >= 0) {
> return;
> @@ -248,7 +256,7 @@ static void usb_serial_handle_control(USBDevice *dev,
> USBPacket *p,
> case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
> break;
>
> - /* Class specific requests. */
> + /* Class specific requests. */
> case DeviceOutVendor | FTDI_RESET:
> switch (value) {
> case FTDI_RESET_SIO:
> @@ -269,16 +277,18 @@ static void usb_serial_handle_control(USBDevice *dev,
> USBPacket *p,
> static int flags;
> qemu_chr_fe_ioctl(&s->cs, CHR_IOCTL_SERIAL_GET_TIOCM, &flags);
> if (value & FTDI_SET_RTS) {
> - if (value & FTDI_RTS)
> + if (value & FTDI_RTS) {
> flags |= CHR_TIOCM_RTS;
> - else
> + } else {
> flags &= ~CHR_TIOCM_RTS;
> + }
> }
> if (value & FTDI_SET_DTR) {
> - if (value & FTDI_DTR)
> + if (value & FTDI_DTR) {
> flags |= CHR_TIOCM_DTR;
> - else
> + } else {
> flags &= ~CHR_TIOCM_DTR;
> + }
> }
> qemu_chr_fe_ioctl(&s->cs, CHR_IOCTL_SERIAL_SET_TIOCM, &flags);
> break;
> @@ -293,10 +303,12 @@ static void usb_serial_handle_control(USBDevice *dev,
> USBPacket *p,
> int divisor = value & 0x3fff;
>
> /* chip special cases */
> - if (divisor == 1 && subdivisor8 == 0)
> + if (divisor == 1 && subdivisor8 == 0) {
> subdivisor8 = 4;
> - if (divisor == 0 && subdivisor8 == 0)
> + }
> + if (divisor == 0 && subdivisor8 == 0) {
> divisor = 1;
> + }
>
> s->params.speed = (48000000 / 2) / (8 * divisor + subdivisor8);
> qemu_chr_fe_ioctl(&s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params);
> @@ -304,30 +316,32 @@ static void usb_serial_handle_control(USBDevice *dev,
> USBPacket *p,
> }
> case DeviceOutVendor | FTDI_SET_DATA:
> switch (value & FTDI_PARITY) {
> - case 0:
> - s->params.parity = 'N';
> - break;
> - case FTDI_ODD:
> - s->params.parity = 'O';
> - break;
> - case FTDI_EVEN:
> - s->params.parity = 'E';
> - break;
> - default:
> - DPRINTF("unsupported parity %d\n", value & FTDI_PARITY);
> - goto fail;
> + case 0:
> + s->params.parity = 'N';
> + break;
> + case FTDI_ODD:
> + s->params.parity = 'O';
> + break;
> + case FTDI_EVEN:
> + s->params.parity = 'E';
> + break;
> + default:
> + DPRINTF("unsupported parity %d\n", value & FTDI_PARITY);
> + goto fail;
> }
> +
> switch (value & FTDI_STOP) {
> - case FTDI_STOP1:
> - s->params.stop_bits = 1;
> - break;
> - case FTDI_STOP2:
> - s->params.stop_bits = 2;
> - break;
> - default:
> - DPRINTF("unsupported stop bits %d\n", value & FTDI_STOP);
> - goto fail;
> + case FTDI_STOP1:
> + s->params.stop_bits = 1;
> + break;
> + case FTDI_STOP2:
> + s->params.stop_bits = 2;
> + break;
> + default:
> + DPRINTF("unsupported stop bits %d\n", value & FTDI_STOP);
> + goto fail;
> }
> +
> qemu_chr_fe_ioctl(&s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params);
> /* TODO: TX ON/OFF */
> break;
> @@ -423,20 +437,24 @@ static void usb_serial_handle_data(USBDevice *dev,
> USBPacket *p)
>
> switch (p->pid) {
> case USB_TOKEN_OUT:
> - if (devep != 2)
> + if (devep != 2) {
> goto fail;
> + }
> for (i = 0; i < p->iov.niov; i++) {
> iov = p->iov.iov + i;
> - /* XXX this blocks entire thread. Rewrite to use
> - * qemu_chr_fe_write and background I/O callbacks */
> + /*
> + * XXX this blocks entire thread. Rewrite to use
> + * qemu_chr_fe_write and background I/O callbacks
> + */
> qemu_chr_fe_write_all(&s->cs, iov->iov_base, iov->iov_len);
> }
> p->actual_length = p->iov.size;
> break;
>
> case USB_TOKEN_IN:
> - if (devep != 1)
> + if (devep != 1) {
> goto fail;
> + }
> usb_serial_token_in(s, p);
> break;
>
> @@ -464,21 +482,24 @@ static void usb_serial_read(void *opaque, const uint8_t
> *buf, int size)
> int first_size, start;
>
> /* room in the buffer? */
> - if (size > (RECV_BUF - s->recv_used))
> + if (size > (RECV_BUF - s->recv_used)) {
> size = RECV_BUF - s->recv_used;
> + }
>
> start = s->recv_ptr + s->recv_used;
> if (start < RECV_BUF) {
> /* copy data to end of buffer */
> first_size = RECV_BUF - start;
> - if (first_size > size)
> + if (first_size > size) {
> first_size = size;
> + }
>
> memcpy(s->recv_buf + start, buf, first_size);
>
> /* wrap around to front if needed */
> - if (size > first_size)
> + if (size > first_size) {
> memcpy(s->recv_buf, buf + first_size, size - first_size);
> + }
> } else {
> start -= RECV_BUF;
> memcpy(s->recv_buf + start, buf, size);
> @@ -493,23 +514,23 @@ static void usb_serial_event(void *opaque, QEMUChrEvent
> event)
> USBSerialState *s = opaque;
>
> switch (event) {
> - case CHR_EVENT_BREAK:
> - s->event_trigger |= FTDI_BI;
> - break;
> - case CHR_EVENT_OPENED:
> - if (!s->dev.attached) {
> - usb_device_attach(&s->dev, &error_abort);
> - }
> - break;
> - case CHR_EVENT_CLOSED:
> - if (s->dev.attached) {
> - usb_device_detach(&s->dev);
> - }
> - break;
> - case CHR_EVENT_MUX_IN:
> - case CHR_EVENT_MUX_OUT:
> - /* Ignore */
> - break;
> + case CHR_EVENT_BREAK:
> + s->event_trigger |= FTDI_BI;
> + break;
> + case CHR_EVENT_OPENED:
> + if (!s->dev.attached) {
> + usb_device_attach(&s->dev, &error_abort);
> + }
> + break;
> + case CHR_EVENT_CLOSED:
> + if (s->dev.attached) {
> + usb_device_detach(&s->dev);
> + }
> + break;
> + case CHR_EVENT_MUX_IN:
> + case CHR_EVENT_MUX_OUT:
> + /* Ignore */
> + break;
> }
> }
>
> @@ -549,8 +570,9 @@ static USBDevice *usb_braille_init(const char *unused)
> Chardev *cdrv;
>
> cdrv = qemu_chr_new("braille", "braille", NULL);
> - if (!cdrv)
> + if (!cdrv) {
> return NULL;
> + }
>
> dev = usb_new("usb-braille");
> qdev_prop_set_chr(&dev->qdev, "chardev", cdrv);
> --
> 2.20.1
>
--
Samuel
<N> M. MIMRAM Samuel Antonin
<N> en voila un qui etait predestiné
-+- #ens-mim - Quelles gueules qu'ils ont les ptits nouveaux ? -+-
- [PATCH 0/9] dev-serial: minor fixes and improvements, Mark Cave-Ayland, 2020/10/26
- [PATCH 1/9] dev-serial: style changes to improve readability and checkpatch fixes, Mark Cave-Ayland, 2020/10/26
- Re: [PATCH 1/9] dev-serial: style changes to improve readability and checkpatch fixes,
Samuel Thibault <=
- [PATCH 2/9] dev-serial: use USB_SERIAL QOM macro for USBSerialState assignments, Mark Cave-Ayland, 2020/10/26
- [PATCH 3/9] dev-serial: convert from DPRINTF to trace-events, Mark Cave-Ayland, 2020/10/26
- [PATCH 4/9] dev-serial: add trace-events for baud rate and data parameters, Mark Cave-Ayland, 2020/10/26
- [PATCH 5/9] dev-serial: replace DeviceOutVendor/DeviceInVendor with equivalent macros from usb.h, Mark Cave-Ayland, 2020/10/26