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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [XEN v2 06/11] xen/arm: Introduce a wrapper for dt_device_get_address() to handle paddr_t
On Tue, 17 Jan 2023, Ayan Kumar Halder wrote:
> dt_device_get_address() can accept u64 only for address and size. The
> various callers will use 'paddr_t' datatype for address and size.
> 'paddr_t' is currently defined as u64, but we may support u32 as well.
> Thus, we need an appropriate wrapper which can handle this type
> conversion.
>
> The callers will now invoke dt_device_get_paddr(). This inturn invokes
> dt_device_get_address() with u64 address/size. And then it typecasts
> the u64 address/size to paddr_t address/size.
>
> Signed-off-by: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
> ---
>
> Changes from -
>
> v1 - 1. New patch introduced.
>
> xen/arch/arm/domain_build.c | 5 +++--
> xen/arch/arm/gic-v2.c | 11 ++++++-----
> xen/arch/arm/gic-v3.c | 9 +++++----
> xen/arch/arm/include/asm/device_tree.h | 19 +++++++++++++++++++
> xen/arch/arm/platforms/exynos5.c | 7 ++++---
> xen/arch/arm/platforms/sunxi.c | 3 ++-
> xen/drivers/char/exynos4210-uart.c | 3 ++-
> xen/drivers/char/ns16550.c | 3 ++-
> xen/drivers/char/omap-uart.c | 3 ++-
> xen/drivers/char/pl011.c | 3 ++-
> xen/drivers/char/scif-uart.c | 3 ++-
> xen/drivers/passthrough/arm/smmu.c | 3 ++-
> 12 files changed, 51 insertions(+), 21 deletions(-)
>
> diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
> index cf8ae37a14..21199b624b 100644
> --- a/xen/arch/arm/domain_build.c
> +++ b/xen/arch/arm/domain_build.c
> @@ -7,6 +7,7 @@
> #include <xen/domain_page.h>
> #include <xen/sched.h>
> #include <xen/sizes.h>
> +#include <asm/device_tree.h>
> #include <asm/irq.h>
> #include <asm/regs.h>
> #include <xen/errno.h>
> @@ -1672,7 +1673,7 @@ static int __init find_memory_holes(const struct
> kernel_info *kinfo,
>
> for ( i = 0; i < naddr; i++ )
> {
> - res = dt_device_get_address(np, i, &addr, &size);
> + res = dt_device_get_paddr(np, i, &addr, &size);
> if ( res )
> {
> printk(XENLOG_ERR "Unable to retrieve address %u for %s\n",
> @@ -2500,7 +2501,7 @@ static int __init handle_device(struct domain *d,
> struct dt_device_node *dev,
> /* Give permission and map MMIOs */
> for ( i = 0; i < naddr; i++ )
> {
> - res = dt_device_get_address(dev, i, &addr, &size);
> + res = dt_device_get_paddr(dev, i, &addr, &size);
> if ( res )
> {
> printk(XENLOG_ERR "Unable to retrieve address %u for %s\n",
> diff --git a/xen/arch/arm/gic-v2.c b/xen/arch/arm/gic-v2.c
> index 5d4d298b86..5230c4ebaf 100644
> --- a/xen/arch/arm/gic-v2.c
> +++ b/xen/arch/arm/gic-v2.c
> @@ -24,6 +24,7 @@
> #include <xen/acpi.h>
> #include <acpi/actables.h>
> #include <asm/p2m.h>
> +#include <asm/device_tree.h>
> #include <asm/domain.h>
> #include <asm/platform.h>
> #include <asm/device.h>
> @@ -993,7 +994,7 @@ static void gicv2_extension_dt_init(const struct
> dt_device_node *node)
> continue;
>
> /* Get register frame resource from DT. */
> - if ( dt_device_get_address(v2m, 0, &addr, &size) )
> + if ( dt_device_get_paddr(v2m, 0, &addr, &size) )
> panic("GICv2: Cannot find a valid v2m frame address\n");
>
> /*
> @@ -1018,19 +1019,19 @@ static void __init gicv2_dt_init(void)
> paddr_t vsize;
> const struct dt_device_node *node = gicv2_info.node;
>
> - res = dt_device_get_address(node, 0, &dbase, NULL);
> + res = dt_device_get_paddr(node, 0, &dbase, NULL);
> if ( res )
> panic("GICv2: Cannot find a valid address for the distributor\n");
>
> - res = dt_device_get_address(node, 1, &cbase, &csize);
> + res = dt_device_get_paddr(node, 1, &cbase, &csize);
> if ( res )
> panic("GICv2: Cannot find a valid address for the CPU\n");
>
> - res = dt_device_get_address(node, 2, &hbase, NULL);
> + res = dt_device_get_paddr(node, 2, &hbase, NULL);
> if ( res )
> panic("GICv2: Cannot find a valid address for the hypervisor\n");
>
> - res = dt_device_get_address(node, 3, &vbase, &vsize);
> + res = dt_device_get_paddr(node, 3, &vbase, &vsize);
> if ( res )
> panic("GICv2: Cannot find a valid address for the virtual CPU\n");
>
> diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c
> index 391dfa53d7..58d2eb0690 100644
> --- a/xen/arch/arm/gic-v3.c
> +++ b/xen/arch/arm/gic-v3.c
> @@ -29,6 +29,7 @@
>
> #include <asm/cpufeature.h>
> #include <asm/device.h>
> +#include <asm/device_tree.h>
> #include <asm/gic.h>
> #include <asm/gic_v3_defs.h>
> #include <asm/gic_v3_its.h>
> @@ -1377,7 +1378,7 @@ static void __init gicv3_dt_init(void)
> int res, i;
> const struct dt_device_node *node = gicv3_info.node;
>
> - res = dt_device_get_address(node, 0, &dbase, NULL);
> + res = dt_device_get_paddr(node, 0, &dbase, NULL);
> if ( res )
> panic("GICv3: Cannot find a valid distributor address\n");
>
> @@ -1395,7 +1396,7 @@ static void __init gicv3_dt_init(void)
> {
> paddr_t rdist_base, rdist_size;
>
> - res = dt_device_get_address(node, 1 + i, &rdist_base, &rdist_size);
> + res = dt_device_get_paddr(node, 1 + i, &rdist_base, &rdist_size);
> if ( res )
> panic("GICv3: No rdist base found for region %d\n", i);
>
> @@ -1417,10 +1418,10 @@ static void __init gicv3_dt_init(void)
> * For GICv3 supporting GICv2, GICC and GICV base address will be
> * provided.
> */
> - res = dt_device_get_address(node, 1 + gicv3.rdist_count,
> + res = dt_device_get_paddr(node, 1 + gicv3.rdist_count,
> &cbase, &csize);
> if ( !res )
> - dt_device_get_address(node, 1 + gicv3.rdist_count + 2,
> + dt_device_get_paddr(node, 1 + gicv3.rdist_count + 2,
> &vbase, &vsize);
> }
>
> diff --git a/xen/arch/arm/include/asm/device_tree.h
> b/xen/arch/arm/include/asm/device_tree.h
> index 51e0f0ae20..7f58f1f278 100644
> --- a/xen/arch/arm/include/asm/device_tree.h
> +++ b/xen/arch/arm/include/asm/device_tree.h
> @@ -11,6 +11,7 @@
> #ifndef __ARCH_ARM_DEVICE_TREE__
> #define __ARCH_ARM_DEVICE_TREE__
>
> +#include <xen/device_tree.h>
> #include <xen/libfdt/libfdt.h>
>
> inline int fdt_get_mem_rsv_paddr(const void *fdt, int n,
> @@ -29,6 +30,24 @@ inline int fdt_get_mem_rsv_paddr(const void *fdt, int n,
> return ret;
> }
>
> +inline int dt_device_get_paddr(const struct dt_device_node *dev,
> + unsigned int index, paddr_t *addr,
> + paddr_t *size)
> +{
> + u64 dt_addr, dt_size;
> + int ret;
> +
> + ret = dt_device_get_address(dev, index, &dt_addr, &dt_size);
> +
> + if ( addr )
> + *addr = dt_addr;
> +
> + if ( size )
> + *size = dt_size;
I think we should check for truncation (top 32-bit != 0) and return an
error in that case.
> + return ret;
> +}
> +
> #endif /* __ARCH_ARM_DEVICE_TREE__ */
> /*
> * Local variables:
> diff --git a/xen/arch/arm/platforms/exynos5.c
> b/xen/arch/arm/platforms/exynos5.c
> index f79fad9957..55b6ac1e7e 100644
> --- a/xen/arch/arm/platforms/exynos5.c
> +++ b/xen/arch/arm/platforms/exynos5.c
> @@ -22,6 +22,7 @@
> #include <xen/mm.h>
> #include <xen/vmap.h>
> #include <xen/delay.h>
> +#include <asm/device_tree.h>
> #include <asm/platforms/exynos5.h>
> #include <asm/platform.h>
> #include <asm/io.h>
> @@ -52,7 +53,7 @@ static int exynos5_init_time(void)
> return -ENXIO;
> }
>
> - rc = dt_device_get_address(node, 0, &mct_base_addr, &size);
> + rc = dt_device_get_paddr(node, 0, &mct_base_addr, &size);
> if ( rc )
> {
> dprintk(XENLOG_ERR, "Error in \"samsung,exynos4210-mct\"\n");
> @@ -125,7 +126,7 @@ static int __init exynos5_smp_init(void)
> return -ENXIO;
> }
>
> - rc = dt_device_get_address(node, 0, &sysram_addr, &size);
> + rc = dt_device_get_paddr(node, 0, &sysram_addr, &size);
> if ( rc )
> {
> dprintk(XENLOG_ERR, "Error in %s\n", compatible);
> @@ -208,7 +209,7 @@ static int exynos5_get_pmu_baseandsize(paddr_t
> *power_base_addr, paddr_t *size)
> return -ENXIO;
> }
>
> - rc = dt_device_get_address(node, 0, power_base_addr, size);
> + rc = dt_device_get_paddr(node, 0, power_base_addr, size);
> if ( rc )
> {
> dprintk(XENLOG_ERR, "Error in \"samsung,exynos5XXX-pmu\"\n");
> diff --git a/xen/arch/arm/platforms/sunxi.c b/xen/arch/arm/platforms/sunxi.c
> index e8e4d88bef..ce47f97507 100644
> --- a/xen/arch/arm/platforms/sunxi.c
> +++ b/xen/arch/arm/platforms/sunxi.c
> @@ -18,6 +18,7 @@
>
> #include <xen/mm.h>
> #include <xen/vmap.h>
> +#include <asm/device_tree.h>
> #include <asm/platform.h>
> #include <asm/io.h>
>
> @@ -50,7 +51,7 @@ static void __iomem *sunxi_map_watchdog(bool *new_wdt)
> return NULL;
> }
>
> - ret = dt_device_get_address(node, 0, &wdt_start, &wdt_len);
> + ret = dt_device_get_paddr(node, 0, &wdt_start, &wdt_len);
> if ( ret )
> {
> dprintk(XENLOG_ERR, "Cannot read watchdog register address\n");
> diff --git a/xen/drivers/char/exynos4210-uart.c
> b/xen/drivers/char/exynos4210-uart.c
> index 32cc8c78b5..6d2008c44f 100644
> --- a/xen/drivers/char/exynos4210-uart.c
> +++ b/xen/drivers/char/exynos4210-uart.c
> @@ -24,6 +24,7 @@
> #include <xen/irq.h>
> #include <xen/mm.h>
> #include <asm/device.h>
> +#include <asm/device_tree.h>
> #include <asm/exynos4210-uart.h>
> #include <asm/io.h>
>
> @@ -316,7 +317,7 @@ static int __init exynos4210_uart_init(struct
> dt_device_node *dev,
> uart->parity = PARITY_NONE;
> uart->stop_bits = 1;
>
> - res = dt_device_get_address(dev, 0, &addr, &size);
> + res = dt_device_get_paddr(dev, 0, &addr, &size);
> if ( res )
> {
> printk("exynos4210: Unable to retrieve the base"
> diff --git a/xen/drivers/char/ns16550.c b/xen/drivers/char/ns16550.c
> index 8ef895a2bb..7226f3c2f7 100644
> --- a/xen/drivers/char/ns16550.c
> +++ b/xen/drivers/char/ns16550.c
> @@ -35,6 +35,7 @@
> #include <asm/io.h>
> #ifdef CONFIG_HAS_DEVICE_TREE
> #include <asm/device.h>
> +#include <asm/device_tree.h>
> #endif
> #ifdef CONFIG_X86
> #include <asm/fixmap.h>
> @@ -1757,7 +1758,7 @@ static int __init ns16550_uart_dt_init(struct
> dt_device_node *dev,
> uart->parity = UART_PARITY_NONE;
> uart->stop_bits = 1;
>
> - res = dt_device_get_address(dev, 0, &uart->io_base, &uart->io_size);
> + res = dt_device_get_paddr(dev, 0, &uart->io_base, &uart->io_size);
> if ( res )
> return res;
>
> diff --git a/xen/drivers/char/omap-uart.c b/xen/drivers/char/omap-uart.c
> index 3b53e1909a..06200bc9f1 100644
> --- a/xen/drivers/char/omap-uart.c
> +++ b/xen/drivers/char/omap-uart.c
> @@ -15,6 +15,7 @@
> #include <xen/init.h>
> #include <xen/irq.h>
> #include <xen/device_tree.h>
> +#include <asm/device_tree.h>
> #include <asm/device.h>
> #include <xen/errno.h>
> #include <xen/mm.h>
> @@ -344,7 +345,7 @@ static int __init omap_uart_init(struct dt_device_node
> *dev,
> uart->parity = UART_PARITY_NONE;
> uart->stop_bits = 1;
>
> - res = dt_device_get_address(dev, 0, &addr, &size);
> + res = dt_device_get_paddr(dev, 0, &addr, &size);
> if ( res )
> {
> printk("omap-uart: Unable to retrieve the base"
> diff --git a/xen/drivers/char/pl011.c b/xen/drivers/char/pl011.c
> index 256ec11e3f..b4c1d9d592 100644
> --- a/xen/drivers/char/pl011.c
> +++ b/xen/drivers/char/pl011.c
> @@ -26,6 +26,7 @@
> #include <asm/device.h>
> #include <xen/mm.h>
> #include <xen/vmap.h>
> +#include <asm/device_tree.h>
> #include <asm/pl011-uart.h>
> #include <asm/io.h>
>
> @@ -265,7 +266,7 @@ static int __init pl011_dt_uart_init(struct
> dt_device_node *dev,
> printk("WARNING: UART configuration is not supported\n");
> }
>
> - res = dt_device_get_address(dev, 0, &addr, &size);
> + res = dt_device_get_paddr(dev, 0, &addr, &size);
> if ( res )
> {
> printk("pl011: Unable to retrieve the base"
> diff --git a/xen/drivers/char/scif-uart.c b/xen/drivers/char/scif-uart.c
> index b425881d06..af14388f70 100644
> --- a/xen/drivers/char/scif-uart.c
> +++ b/xen/drivers/char/scif-uart.c
> @@ -26,6 +26,7 @@
> #include <xen/mm.h>
> #include <xen/delay.h>
> #include <asm/device.h>
> +#include <asm/device_tree.h>
> #include <asm/scif-uart.h>
> #include <asm/io.h>
>
> @@ -318,7 +319,7 @@ static int __init scif_uart_init(struct dt_device_node
> *dev,
>
> uart = &scif_com;
>
> - res = dt_device_get_address(dev, 0, &addr, &size);
> + res = dt_device_get_paddr(dev, 0, &addr, &size);
> if ( res )
> {
> printk("scif-uart: Unable to retrieve the base"
> diff --git a/xen/drivers/passthrough/arm/smmu.c
> b/xen/drivers/passthrough/arm/smmu.c
> index 490d253d44..0c89cb644e 100644
> --- a/xen/drivers/passthrough/arm/smmu.c
> +++ b/xen/drivers/passthrough/arm/smmu.c
> @@ -51,6 +51,7 @@
> #include <xen/sizes.h>
> #include <asm/atomic.h>
> #include <asm/device.h>
> +#include <asm/device_tree.h>
> #include <asm/io.h>
> #include <asm/iommu_fwspec.h>
> #include <asm/platform.h>
> @@ -101,7 +102,7 @@ static struct resource *platform_get_resource(struct
> platform_device *pdev,
>
> switch (type) {
> case IORESOURCE_MEM:
> - ret = dt_device_get_address(pdev, num, &res.addr, &res.size);
> + ret = dt_device_get_paddr(pdev, num, &res.addr, &res.size);
>
> return ((ret) ? NULL : &res);
>
> --
> 2.17.1
>
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