* [PATCH 4/11] Celleb: support iommu
@ 2007-01-26 11:52 Ishizaki Kou
2007-01-28 21:32 ` Benjamin Herrenschmidt
0 siblings, 1 reply; 3+ messages in thread
From: Ishizaki Kou @ 2007-01-26 11:52 UTC (permalink / raw)
To: paulus; +Cc: linuxppc-dev
This patch creates Celleb platform dependent file to support iommu.
Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
---
Index: linux-powerpc-git/arch/powerpc/platforms/celleb/iommu.c
diff -u /dev/null linux-powerpc-git/arch/powerpc/platforms/celleb/iommu.c:1.19
--- /dev/null Fri Jan 26 19:47:00 2007
+++ linux-powerpc-git/arch/powerpc/platforms/celleb/iommu.c Fri Jan 26 17:45:04 2007
@@ -0,0 +1,104 @@
+/*
+ * Support for IOMMU on Celleb platform.
+ *
+ * (C) Copyright 2006-2007 TOSHIBA CORPORATION
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+#include <linux/pci.h>
+
+#include <asm/of_platform.h>
+
+#include "beat_wrapper.h"
+
+#define DMA_FLAGS 0xf800000000000000UL /* r/w permitted, coherency required,
+ strongest order */
+
+static int __init find_dma_window(u64 *io_space_id, u64 *ioid,
+ u64 *base, u64 *size, u64 *io_page_size)
+{
+ struct device_node *dn;
+ const unsigned long *dma_window;
+
+ for_each_node_by_type(dn, "ioif") {
+ dma_window = get_property(dn, "toshiba,dma-window", NULL);
+ if (dma_window) {
+ *io_space_id = (dma_window[0] >> 32) & 0xffffffffUL;
+ *ioid = dma_window[0] & 0x7ffUL;
+ *base = dma_window[1];
+ *size = dma_window[2];
+ *io_page_size = 1 << dma_window[3];
+ of_node_put(dn);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static void __init celleb_init_direct_mapping(void)
+{
+ u64 lpar_addr, io_addr;
+ u64 io_space_id, ioid, dma_base, dma_size, io_page_size;
+
+ if (!find_dma_window(&io_space_id, &ioid, &dma_base, &dma_size,
+ &io_page_size)) {
+ pr_info("No dma window found !\n");
+ return;
+ }
+
+ for (lpar_addr = 0; lpar_addr < dma_size; lpar_addr += io_page_size) {
+ io_addr = lpar_addr + dma_base;
+ (void)beat_put_iopte(io_space_id, io_addr, lpar_addr,
+ ioid, DMA_FLAGS);
+ }
+
+ dma_direct_offset = dma_base;
+}
+
+static int celleb_of_bus_notify(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct device *dev = data;
+
+ /* We are only intereted in device addition */
+ if (action != BUS_NOTIFY_ADD_DEVICE)
+ return 0;
+
+ dev->archdata.dma_ops = pci_dma_ops;
+
+ return 0;
+}
+
+static struct notifier_block celleb_of_bus_notifier = {
+ .notifier_call = celleb_of_bus_notify
+};
+
+static int __init celleb_init_iommu(void)
+{
+ if (!machine_is(celleb))
+ return -ENODEV;
+
+ celleb_init_direct_mapping();
+ pci_dma_ops = &dma_direct_ops;
+ bus_register_notifier(&of_platform_bus_type, &celleb_of_bus_notifier);
+
+ return 0;
+}
+
+arch_initcall(celleb_init_iommu);
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH 4/11] Celleb: support iommu
2007-01-26 11:52 [PATCH 4/11] Celleb: support iommu Ishizaki Kou
@ 2007-01-28 21:32 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 3+ messages in thread
From: Benjamin Herrenschmidt @ 2007-01-28 21:32 UTC (permalink / raw)
To: Ishizaki Kou; +Cc: linuxppc-dev, paulus
On Fri, 2007-01-26 at 20:52 +0900, Ishizaki Kou wrote:
> This patch creates Celleb platform dependent file to support iommu.
>
> Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
>
> Index: linux-powerpc-git/arch/powerpc/platforms/celleb/iommu.c
> diff -u /dev/null linux-powerpc-git/arch/powerpc/platforms/celleb/iommu.c:1.19
> --- /dev/null Fri Jan 26 19:47:00 2007
> +++ linux-powerpc-git/arch/powerpc/platforms/celleb/iommu.c Fri Jan 26 17:45:04 2007
> @@ -0,0 +1,104 @@
> +/*
> + * Support for IOMMU on Celleb platform.
> + *
> + * (C) Copyright 2006-2007 TOSHIBA CORPORATION
> + *
> + * 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, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/init.h>
> +#include <linux/dma-mapping.h>
> +#include <linux/pci.h>
> +
> +#include <asm/of_platform.h>
> +
> +#include "beat_wrapper.h"
> +
> +#define DMA_FLAGS 0xf800000000000000UL /* r/w permitted, coherency required,
> + strongest order */
> +
> +static int __init find_dma_window(u64 *io_space_id, u64 *ioid,
> + u64 *base, u64 *size, u64 *io_page_size)
> +{
> + struct device_node *dn;
> + const unsigned long *dma_window;
> +
> + for_each_node_by_type(dn, "ioif") {
> + dma_window = get_property(dn, "toshiba,dma-window", NULL);
> + if (dma_window) {
> + *io_space_id = (dma_window[0] >> 32) & 0xffffffffUL;
> + *ioid = dma_window[0] & 0x7ffUL;
> + *base = dma_window[1];
> + *size = dma_window[2];
> + *io_page_size = 1 << dma_window[3];
> + of_node_put(dn);
> + return 1;
> + }
> + }
> + return 0;
> +}
> +
> +static void __init celleb_init_direct_mapping(void)
> +{
> + u64 lpar_addr, io_addr;
> + u64 io_space_id, ioid, dma_base, dma_size, io_page_size;
> +
> + if (!find_dma_window(&io_space_id, &ioid, &dma_base, &dma_size,
> + &io_page_size)) {
> + pr_info("No dma window found !\n");
> + return;
> + }
> +
> + for (lpar_addr = 0; lpar_addr < dma_size; lpar_addr += io_page_size) {
> + io_addr = lpar_addr + dma_base;
> + (void)beat_put_iopte(io_space_id, io_addr, lpar_addr,
> + ioid, DMA_FLAGS);
> + }
> +
> + dma_direct_offset = dma_base;
> +}
> +
> +static int celleb_of_bus_notify(struct notifier_block *nb,
> + unsigned long action, void *data)
> +{
> + struct device *dev = data;
> +
> + /* We are only intereted in device addition */
> + if (action != BUS_NOTIFY_ADD_DEVICE)
> + return 0;
> +
> + dev->archdata.dma_ops = pci_dma_ops;
> +
> + return 0;
> +}
> +
> +static struct notifier_block celleb_of_bus_notifier = {
> + .notifier_call = celleb_of_bus_notify
> +};
> +
> +static int __init celleb_init_iommu(void)
> +{
> + if (!machine_is(celleb))
> + return -ENODEV;
> +
> + celleb_init_direct_mapping();
> + pci_dma_ops = &dma_direct_ops;
> + bus_register_notifier(&of_platform_bus_type, &celleb_of_bus_notifier);
> +
> + return 0;
> +}
> +
> +arch_initcall(celleb_init_iommu);
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 4/11] Celleb: support iommu
@ 2007-02-02 7:39 Ishizaki Kou
0 siblings, 0 replies; 3+ messages in thread
From: Ishizaki Kou @ 2007-02-02 7:39 UTC (permalink / raw)
To: paulus; +Cc: linuxppc-dev
This patch creates Celleb platform dependent file to support iommu.
Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
Index: linux-powerpc-git/arch/powerpc/platforms/celleb/iommu.c
diff -u /dev/null linux-powerpc-git/arch/powerpc/platforms/celleb/iommu.c:1.19
--- /dev/null Fri Feb 2 13:38:04 2007
+++ linux-powerpc-git/arch/powerpc/platforms/celleb/iommu.c Fri Jan 26 17:45:04 2007
@@ -0,0 +1,104 @@
+/*
+ * Support for IOMMU on Celleb platform.
+ *
+ * (C) Copyright 2006-2007 TOSHIBA CORPORATION
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+#include <linux/pci.h>
+
+#include <asm/of_platform.h>
+
+#include "beat_wrapper.h"
+
+#define DMA_FLAGS 0xf800000000000000UL /* r/w permitted, coherency required,
+ strongest order */
+
+static int __init find_dma_window(u64 *io_space_id, u64 *ioid,
+ u64 *base, u64 *size, u64 *io_page_size)
+{
+ struct device_node *dn;
+ const unsigned long *dma_window;
+
+ for_each_node_by_type(dn, "ioif") {
+ dma_window = get_property(dn, "toshiba,dma-window", NULL);
+ if (dma_window) {
+ *io_space_id = (dma_window[0] >> 32) & 0xffffffffUL;
+ *ioid = dma_window[0] & 0x7ffUL;
+ *base = dma_window[1];
+ *size = dma_window[2];
+ *io_page_size = 1 << dma_window[3];
+ of_node_put(dn);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static void __init celleb_init_direct_mapping(void)
+{
+ u64 lpar_addr, io_addr;
+ u64 io_space_id, ioid, dma_base, dma_size, io_page_size;
+
+ if (!find_dma_window(&io_space_id, &ioid, &dma_base, &dma_size,
+ &io_page_size)) {
+ pr_info("No dma window found !\n");
+ return;
+ }
+
+ for (lpar_addr = 0; lpar_addr < dma_size; lpar_addr += io_page_size) {
+ io_addr = lpar_addr + dma_base;
+ (void)beat_put_iopte(io_space_id, io_addr, lpar_addr,
+ ioid, DMA_FLAGS);
+ }
+
+ dma_direct_offset = dma_base;
+}
+
+static int celleb_of_bus_notify(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct device *dev = data;
+
+ /* We are only intereted in device addition */
+ if (action != BUS_NOTIFY_ADD_DEVICE)
+ return 0;
+
+ dev->archdata.dma_ops = pci_dma_ops;
+
+ return 0;
+}
+
+static struct notifier_block celleb_of_bus_notifier = {
+ .notifier_call = celleb_of_bus_notify
+};
+
+static int __init celleb_init_iommu(void)
+{
+ if (!machine_is(celleb))
+ return -ENODEV;
+
+ celleb_init_direct_mapping();
+ pci_dma_ops = &dma_direct_ops;
+ bus_register_notifier(&of_platform_bus_type, &celleb_of_bus_notifier);
+
+ return 0;
+}
+
+arch_initcall(celleb_init_iommu);
^ permalink raw reply [flat|nested] 3+ messages in thread
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