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qemu/hw/arm/fsl-imx25.c
Markus Armbruster 668f62ec62 error: Eliminate error_propagate() with Coccinelle, part 1 
When all we do with an Error we receive into a local variable is
propagating to somewhere else, we can just as well receive it there
right away.  Convert

    if (!foo(..., &err)) {
        ...
        error_propagate(errp, err);
        ...
        return ...
    }

to

    if (!foo(..., errp)) {
        ...
        ...
        return ...
    }

where nothing else needs @err.  Coccinelle script:

    @rule1 forall@
    identifier fun, err, errp, lbl;
    expression list args, args2;
    binary operator op;
    constant c1, c2;
    symbol false;
    @@
         if (
    (
    -        fun(args, &err, args2)
    +        fun(args, errp, args2)
    |
    -        !fun(args, &err, args2)
    +        !fun(args, errp, args2)
    |
    -        fun(args, &err, args2) op c1
    +        fun(args, errp, args2) op c1
    )
            )
         {
             ... when != err
                 when != lbl:
                 when strict
    -        error_propagate(errp, err);
             ... when != err
    (
             return;
    |
             return c2;
    |
             return false;
    )
         }

    @rule2 forall@
    identifier fun, err, errp, lbl;
    expression list args, args2;
    expression var;
    binary operator op;
    constant c1, c2;
    symbol false;
    @@
    -    var = fun(args, &err, args2);
    +    var = fun(args, errp, args2);
         ... when != err
         if (
    (
             var
    |
             !var
    |
             var op c1
    )
            )
         {
             ... when != err
                 when != lbl:
                 when strict
    -        error_propagate(errp, err);
             ... when != err
    (
             return;
    |
             return c2;
    |
             return false;
    |
             return var;
    )
         }

    @depends on rule1 || rule2@
    identifier err;
    @@
    -    Error *err = NULL;
         ... when != err

Not exactly elegant, I'm afraid.

The "when != lbl:" is necessary to avoid transforming

         if (fun(args, &err)) {
             goto out
         }
         ...
     out:
         error_propagate(errp, err);

even though other paths to label out still need the error_propagate().
For an actual example, see sclp_realize().

Without the "when strict", Coccinelle transforms vfio_msix_setup(),
incorrectly.  I don't know what exactly "when strict" does, only that
it helps here.

The match of return is narrower than what I want, but I can't figure
out how to express "return where the operand doesn't use @err".  For
an example where it's too narrow, see vfio_intx_enable().

Silently fails to convert hw/arm/armsse.c, because Coccinelle gets
confused by ARMSSE being used both as typedef and function-like macro
there.  Converted manually.

Line breaks tidied up manually.  One nested declaration of @local_err
deleted manually.  Preexisting unwanted blank line dropped in
hw/riscv/sifive_e.c.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-10 15:18:08 +02:00

345 lines
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/*
* Copyright (c) 2013 Jean-Christophe Dubois <jcd@tribudubois.net>
*
* i.MX25 SOC emulation.
*
* Based on hw/arm/xlnx-zynqmp.c
*
* Copyright (C) 2015 Xilinx Inc
* Written by Peter Crosthwaite <peter.crosthwaite@xilinx.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "cpu.h"
#include "hw/arm/fsl-imx25.h"
#include "sysemu/sysemu.h"
#include "exec/address-spaces.h"
#include "hw/qdev-properties.h"
#include "chardev/char.h"
#define IMX25_ESDHC_CAPABILITIES 0x07e20000
static void fsl_imx25_init(Object *obj)
{
FslIMX25State *s = FSL_IMX25(obj);
int i;
object_initialize_child(obj, "cpu", &s->cpu, ARM_CPU_TYPE_NAME("arm926"));
object_initialize_child(obj, "avic", &s->avic, TYPE_IMX_AVIC);
object_initialize_child(obj, "ccm", &s->ccm, TYPE_IMX25_CCM);
for (i = 0; i < FSL_IMX25_NUM_UARTS; i++) {
object_initialize_child(obj, "uart[*]", &s->uart[i], TYPE_IMX_SERIAL);
}
for (i = 0; i < FSL_IMX25_NUM_GPTS; i++) {
object_initialize_child(obj, "gpt[*]", &s->gpt[i], TYPE_IMX25_GPT);
}
for (i = 0; i < FSL_IMX25_NUM_EPITS; i++) {
object_initialize_child(obj, "epit[*]", &s->epit[i], TYPE_IMX_EPIT);
}
object_initialize_child(obj, "fec", &s->fec, TYPE_IMX_FEC);
object_initialize_child(obj, "rngc", &s->rngc, TYPE_IMX_RNGC);
for (i = 0; i < FSL_IMX25_NUM_I2CS; i++) {
object_initialize_child(obj, "i2c[*]", &s->i2c[i], TYPE_IMX_I2C);
}
for (i = 0; i < FSL_IMX25_NUM_GPIOS; i++) {
object_initialize_child(obj, "gpio[*]", &s->gpio[i], TYPE_IMX_GPIO);
}
for (i = 0; i < FSL_IMX25_NUM_ESDHCS; i++) {
object_initialize_child(obj, "sdhc[*]", &s->esdhc[i], TYPE_IMX_USDHC);
}
for (i = 0; i < FSL_IMX25_NUM_USBS; i++) {
object_initialize_child(obj, "usb[*]", &s->usb[i], TYPE_CHIPIDEA);
}
object_initialize_child(obj, "wdt", &s->wdt, TYPE_IMX2_WDT);
}
static void fsl_imx25_realize(DeviceState *dev, Error **errp)
{
FslIMX25State *s = FSL_IMX25(dev);
uint8_t i;
Error *err = NULL;
if (!qdev_realize(DEVICE(&s->cpu), NULL, errp)) {
return;
}
if (!sysbus_realize(SYS_BUS_DEVICE(&s->avic), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->avic), 0, FSL_IMX25_AVIC_ADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 0,
qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_IRQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 1,
qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_FIQ));
if (!sysbus_realize(SYS_BUS_DEVICE(&s->ccm), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->ccm), 0, FSL_IMX25_CCM_ADDR);
/* Initialize all UARTs */
for (i = 0; i < FSL_IMX25_NUM_UARTS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} serial_table[FSL_IMX25_NUM_UARTS] = {
{ FSL_IMX25_UART1_ADDR, FSL_IMX25_UART1_IRQ },
{ FSL_IMX25_UART2_ADDR, FSL_IMX25_UART2_IRQ },
{ FSL_IMX25_UART3_ADDR, FSL_IMX25_UART3_IRQ },
{ FSL_IMX25_UART4_ADDR, FSL_IMX25_UART4_IRQ },
{ FSL_IMX25_UART5_ADDR, FSL_IMX25_UART5_IRQ }
};
qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", serial_hd(i));
if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart[i]), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->uart[i]), 0, serial_table[i].addr);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
serial_table[i].irq));
}
/* Initialize all GPT timers */
for (i = 0; i < FSL_IMX25_NUM_GPTS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} gpt_table[FSL_IMX25_NUM_GPTS] = {
{ FSL_IMX25_GPT1_ADDR, FSL_IMX25_GPT1_IRQ },
{ FSL_IMX25_GPT2_ADDR, FSL_IMX25_GPT2_IRQ },
{ FSL_IMX25_GPT3_ADDR, FSL_IMX25_GPT3_IRQ },
{ FSL_IMX25_GPT4_ADDR, FSL_IMX25_GPT4_IRQ }
};
s->gpt[i].ccm = IMX_CCM(&s->ccm);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpt[i]), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpt[i]), 0, gpt_table[i].addr);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpt[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
gpt_table[i].irq));
}
/* Initialize all EPIT timers */
for (i = 0; i < FSL_IMX25_NUM_EPITS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} epit_table[FSL_IMX25_NUM_EPITS] = {
{ FSL_IMX25_EPIT1_ADDR, FSL_IMX25_EPIT1_IRQ },
{ FSL_IMX25_EPIT2_ADDR, FSL_IMX25_EPIT2_IRQ }
};
s->epit[i].ccm = IMX_CCM(&s->ccm);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->epit[i]), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->epit[i]), 0, epit_table[i].addr);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->epit[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
epit_table[i].irq));
}
qdev_set_nic_properties(DEVICE(&s->fec), &nd_table[0]);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->fec), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->fec), 0, FSL_IMX25_FEC_ADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->fec), 0,
qdev_get_gpio_in(DEVICE(&s->avic), FSL_IMX25_FEC_IRQ));
if (!sysbus_realize(SYS_BUS_DEVICE(&s->rngc), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->rngc), 0, FSL_IMX25_RNGC_ADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->rngc), 0,
qdev_get_gpio_in(DEVICE(&s->avic), FSL_IMX25_RNGC_IRQ));
/* Initialize all I2C */
for (i = 0; i < FSL_IMX25_NUM_I2CS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} i2c_table[FSL_IMX25_NUM_I2CS] = {
{ FSL_IMX25_I2C1_ADDR, FSL_IMX25_I2C1_IRQ },
{ FSL_IMX25_I2C2_ADDR, FSL_IMX25_I2C2_IRQ },
{ FSL_IMX25_I2C3_ADDR, FSL_IMX25_I2C3_IRQ }
};
if (!sysbus_realize(SYS_BUS_DEVICE(&s->i2c[i]), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c[i]), 0, i2c_table[i].addr);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
i2c_table[i].irq));
}
/* Initialize all GPIOs */
for (i = 0; i < FSL_IMX25_NUM_GPIOS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} gpio_table[FSL_IMX25_NUM_GPIOS] = {
{ FSL_IMX25_GPIO1_ADDR, FSL_IMX25_GPIO1_IRQ },
{ FSL_IMX25_GPIO2_ADDR, FSL_IMX25_GPIO2_IRQ },
{ FSL_IMX25_GPIO3_ADDR, FSL_IMX25_GPIO3_IRQ },
{ FSL_IMX25_GPIO4_ADDR, FSL_IMX25_GPIO4_IRQ }
};
if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio[i]), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio[i]), 0, gpio_table[i].addr);
/* Connect GPIO IRQ to PIC */
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
gpio_table[i].irq));
}
/* Initialize all SDHC */
for (i = 0; i < FSL_IMX25_NUM_ESDHCS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} esdhc_table[FSL_IMX25_NUM_ESDHCS] = {
{ FSL_IMX25_ESDHC1_ADDR, FSL_IMX25_ESDHC1_IRQ },
{ FSL_IMX25_ESDHC2_ADDR, FSL_IMX25_ESDHC2_IRQ },
};
object_property_set_uint(OBJECT(&s->esdhc[i]), "sd-spec-version", 2,
&error_abort);
object_property_set_uint(OBJECT(&s->esdhc[i]), "capareg",
IMX25_ESDHC_CAPABILITIES, &error_abort);
object_property_set_uint(OBJECT(&s->esdhc[i]), "vendor",
SDHCI_VENDOR_IMX, &error_abort);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->esdhc[i]), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->esdhc[i]), 0, esdhc_table[i].addr);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->esdhc[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
esdhc_table[i].irq));
}
/* USB */
for (i = 0; i < FSL_IMX25_NUM_USBS; i++) {
static const struct {
hwaddr addr;
unsigned int irq;
} usb_table[FSL_IMX25_NUM_USBS] = {
{ FSL_IMX25_USB1_ADDR, FSL_IMX25_USB1_IRQ },
{ FSL_IMX25_USB2_ADDR, FSL_IMX25_USB2_IRQ },
};
sysbus_realize(SYS_BUS_DEVICE(&s->usb[i]), &error_abort);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->usb[i]), 0, usb_table[i].addr);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->usb[i]), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
usb_table[i].irq));
}
/* Watchdog */
object_property_set_bool(OBJECT(&s->wdt), "pretimeout-support", true,
&error_abort);
sysbus_realize(SYS_BUS_DEVICE(&s->wdt), &error_abort);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->wdt), 0, FSL_IMX25_WDT_ADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->wdt), 0,
qdev_get_gpio_in(DEVICE(&s->avic),
FSL_IMX25_WDT_IRQ));
/* initialize 2 x 16 KB ROM */
memory_region_init_rom(&s->rom[0], OBJECT(dev), "imx25.rom0",
FSL_IMX25_ROM0_SIZE, &err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(get_system_memory(), FSL_IMX25_ROM0_ADDR,
&s->rom[0]);
memory_region_init_rom(&s->rom[1], OBJECT(dev), "imx25.rom1",
FSL_IMX25_ROM1_SIZE, &err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(get_system_memory(), FSL_IMX25_ROM1_ADDR,
&s->rom[1]);
/* initialize internal RAM (128 KB) */
memory_region_init_ram(&s->iram, NULL, "imx25.iram", FSL_IMX25_IRAM_SIZE,
&err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(get_system_memory(), FSL_IMX25_IRAM_ADDR,
&s->iram);
/* internal RAM (128 KB) is aliased over 128 MB - 128 KB */
memory_region_init_alias(&s->iram_alias, OBJECT(dev), "imx25.iram_alias",
&s->iram, 0, FSL_IMX25_IRAM_ALIAS_SIZE);
memory_region_add_subregion(get_system_memory(), FSL_IMX25_IRAM_ALIAS_ADDR,
&s->iram_alias);
}
static void fsl_imx25_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = fsl_imx25_realize;
dc->desc = "i.MX25 SOC";
/*
* Reason: uses serial_hds in realize and the imx25 board does not
* support multiple CPUs
*/
dc->user_creatable = false;
}
static const TypeInfo fsl_imx25_type_info = {
.name = TYPE_FSL_IMX25,
.parent = TYPE_DEVICE,
.instance_size = sizeof(FslIMX25State),
.instance_init = fsl_imx25_init,
.class_init = fsl_imx25_class_init,
};
static void fsl_imx25_register_types(void)
{
type_register_static(&fsl_imx25_type_info);
}
type_init(fsl_imx25_register_types)
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