Re: [PATCH v2 4/6] hw/char/parallel: Export ParallelState

[BALATON Zoltan]

On Sun, 21 May 2023, Bernhard Beschow wrote:
> Exporting ParallelState is a precondition for exporing TYPE_ISA_PARALLEL.

This may need a better commit message. It's not a precondition per coding 
standards I think just a preference for allowing embedding the device in 
other devices but otherwise unnecessary. Or at least fix the typo 
"exporing" -> exporting.

Regards,
BALATON Zoltan

> Suggested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> ---
> include/hw/char/parallel.h | 44 ++++++++++++++++++++++++++++++++++++++
> hw/char/parallel.c         | 42 ------------------------------------
> 2 files changed, 44 insertions(+), 42 deletions(-)
>
> diff --git a/include/hw/char/parallel.h b/include/hw/char/parallel.h
> index 0a23c0f57e..2d4907c1fe 100644
> --- a/include/hw/char/parallel.h
> +++ b/include/hw/char/parallel.h
> @@ -1,9 +1,53 @@
> #ifndef HW_PARALLEL_H
> #define HW_PARALLEL_H
>
> +#include "exec/ioport.h"
> +#include "exec/memory.h"
> #include "hw/isa/isa.h"
> +#include "hw/irq.h"
> +#include "chardev/char-fe.h"
> #include "chardev/char.h"
>
> +/*
> + * These are the definitions for the Printer Status Register
> + */
> +#define PARA_STS_BUSY   0x80    /* Busy complement */
> +#define PARA_STS_ACK    0x40    /* Acknowledge */
> +#define PARA_STS_PAPER  0x20    /* Out of paper */
> +#define PARA_STS_ONLINE 0x10    /* Online */
> +#define PARA_STS_ERROR  0x08    /* Error complement */
> +#define PARA_STS_TMOUT  0x01    /* EPP timeout */
> +
> +/*
> + * These are the definitions for the Printer Control Register
> + */
> +#define PARA_CTR_DIR    0x20    /* Direction (1=read, 0=write) */
> +#define PARA_CTR_INTEN  0x10    /* IRQ Enable */
> +#define PARA_CTR_SELECT 0x08    /* Select In complement */
> +#define PARA_CTR_INIT   0x04    /* Initialize Printer complement */
> +#define PARA_CTR_AUTOLF 0x02    /* Auto linefeed complement */
> +#define PARA_CTR_STROBE 0x01    /* Strobe complement */
> +
> +#define PARA_CTR_SIGNAL (PARA_CTR_SELECT | PARA_CTR_INIT | PARA_CTR_AUTOLF \
> +                         | PARA_CTR_STROBE)
> +
> +typedef struct ParallelState {
> +    MemoryRegion iomem;
> +    uint8_t dataw;
> +    uint8_t datar;
> +    uint8_t status;
> +    uint8_t control;
> +    qemu_irq irq;
> +    int irq_pending;
> +    CharBackend chr;
> +    int hw_driver;
> +    int epp_timeout;
> +    uint32_t last_read_offset; /* For debugging */
> +    /* Memory-mapped interface */
> +    int it_shift;
> +    PortioList portio_list;
> +} ParallelState;
> +
> void parallel_hds_isa_init(ISABus *bus, int n);
>
> bool parallel_mm_init(MemoryRegion *address_space,
> diff --git a/hw/char/parallel.c b/hw/char/parallel.c
> index af551e7864..522301f43a 100644
> --- a/hw/char/parallel.c
> +++ b/hw/char/parallel.c
> @@ -27,10 +27,7 @@
> #include "qapi/error.h"
> #include "qemu/module.h"
> #include "chardev/char-parallel.h"
> -#include "chardev/char-fe.h"
> #include "hw/acpi/acpi_aml_interface.h"
> -#include "hw/irq.h"
> -#include "hw/isa/isa.h"
> #include "hw/qdev-properties.h"
> #include "hw/qdev-properties-system.h"
> #include "migration/vmstate.h"
> @@ -54,45 +51,6 @@
> #define PARA_REG_EPP_ADDR 3
> #define PARA_REG_EPP_DATA 4
>
> -/*
> - * These are the definitions for the Printer Status Register
> - */
> -#define PARA_STS_BUSY   0x80    /* Busy complement */
> -#define PARA_STS_ACK    0x40    /* Acknowledge */
> -#define PARA_STS_PAPER  0x20    /* Out of paper */
> -#define PARA_STS_ONLINE 0x10    /* Online */
> -#define PARA_STS_ERROR  0x08    /* Error complement */
> -#define PARA_STS_TMOUT  0x01    /* EPP timeout */
> -
> -/*
> - * These are the definitions for the Printer Control Register
> - */
> -#define PARA_CTR_DIR    0x20    /* Direction (1=read, 0=write) */
> -#define PARA_CTR_INTEN  0x10    /* IRQ Enable */
> -#define PARA_CTR_SELECT 0x08    /* Select In complement */
> -#define PARA_CTR_INIT   0x04    /* Initialize Printer complement */
> -#define PARA_CTR_AUTOLF 0x02    /* Auto linefeed complement */
> -#define PARA_CTR_STROBE 0x01    /* Strobe complement */
> -
> -#define PARA_CTR_SIGNAL 
> (PARA_CTR_SELECT|PARA_CTR_INIT|PARA_CTR_AUTOLF|PARA_CTR_STROBE)
> -
> -typedef struct ParallelState {
> -    MemoryRegion iomem;
> -    uint8_t dataw;
> -    uint8_t datar;
> -    uint8_t status;
> -    uint8_t control;
> -    qemu_irq irq;
> -    int irq_pending;
> -    CharBackend chr;
> -    int hw_driver;
> -    int epp_timeout;
> -    uint32_t last_read_offset; /* For debugging */
> -    /* Memory-mapped interface */
> -    int it_shift;
> -    PortioList portio_list;
> -} ParallelState;
> -
> #define TYPE_ISA_PARALLEL "isa-parallel"
> OBJECT_DECLARE_SIMPLE_TYPE(ISAParallelState, ISA_PARALLEL)