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Date: Fri, 21 Sep 2012 00:30:20 +0000 (UTC)
From: Paul Walmsley <paul@...an.com>
To: Omar Ramirez Luna <omar.luna@...aro.org>
cc: Tony Lindgren <tony@...mide.com>,
Benoit Cousson <b-cousson@...com>,
Ohad Ben-Cohen <ohad@...ery.com>,
Joerg Roedel <joerg.roedel@....com>,
Russell King <linux@....linux.org.uk>,
Rajendra Nayak <rnayak@...com>,
Peter Ujfalusi <peter.ujfalusi@...com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
devicetree-discuss@...ts.ozlabs.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-omap@...r.kernel.org
Subject: Re: [PATCH v2 2/9] ARM: OMAP3: hwmod data: add mmu data for iva and
isp
Hi
On Wed, 12 Sep 2012, Omar Ramirez Luna wrote:
> Add mmu hwmod data for iva and isp.
>
> Due to compatibility an ifdef CONFIG_OMAP_IOMMU_IVA2 needs to be
> propagated (previously on iommu resource info) to hwmod data in OMAP3,
> so users of iommu and tidspbridge can avoid issues of two modules
> managing mmu data/irqs/resets; this until tidspbridge can be migrated
> to iommu framework.
>
> Cc: Benoit Cousson <b-cousson@...com>
> Signed-off-by: Omar Ramirez Luna <omar.luna@...aro.org>
During testing, this patch was found to cause boot warnings on
AM3517-based devices. The ISP MMUs do not appear to be present on
those chips. The patch has been modified to restrict these hwmods to
OMAP34xx/36xx chips; updated patch below.
- Paul
From: Paul Walmsley <paul@...an.com>
Date: Thu, 20 Sep 2012 18:23:22 -0600
Subject: [PATCH] ARM: OMAP3: hwmod data: add mmu data for iva and isp
Add mmu hwmod data for iva and isp.
Due to compatibility an ifdef CONFIG_OMAP_IOMMU_IVA2 needs to be
propagated (previously on iommu resource info) to hwmod data in OMAP3,
so users of iommu and tidspbridge can avoid issues of two modules
managing mmu data/irqs/resets; this until tidspbridge can be migrated
to iommu framework.
Cc: Benoit Cousson <b-cousson@...com>
Signed-off-by: Omar Ramirez Luna <omar.luna@...aro.org>
[paul@...an.com: fixed some kerneldoc and whitespace; ISP MMUs not present
on AM35xx so restricted these hwmods to 34xx/36xx]
Signed-off-by: Paul Walmsley <paul@...an.com>
---
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 125 ++++++++++++++++++++++++++++
arch/arm/plat-omap/include/plat/iommu.h | 13 +++
2 files changed, 138 insertions(+)
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index f1328bc..11442d8 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -27,6 +27,7 @@
#include <plat/mcbsp.h>
#include <plat/mcspi.h>
#include <plat/dmtimer.h>
+#include <plat/iommu.h>
#include <mach/am35xx.h>
@@ -2858,6 +2859,122 @@ static struct omap_hwmod_ocp_if omap3xxx_l4_per__gpio3 = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
+/*
+ * 'mmu' class
+ * The memory management unit performs virtual to physical address translation
+ * for its requestors.
+ */
+
+static struct omap_hwmod_class_sysconfig mmu_sysc = {
+ .rev_offs = 0x000,
+ .sysc_offs = 0x010,
+ .syss_offs = 0x014,
+ .sysc_flags = (SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_SIDLEMODE |
+ SYSC_HAS_SOFTRESET | SYSC_HAS_AUTOIDLE),
+ .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+ .sysc_fields = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap3xxx_mmu_hwmod_class = {
+ .name = "mmu",
+ .sysc = &mmu_sysc,
+};
+
+/* mmu isp */
+
+static struct omap_mmu_dev_attr mmu_isp_dev_attr = {
+ .da_start = 0x0,
+ .da_end = 0xfffff000,
+ .nr_tlb_entries = 8,
+};
+
+static struct omap_hwmod omap3xxx_mmu_isp_hwmod;
+static struct omap_hwmod_irq_info omap3xxx_mmu_isp_irqs[] = {
+ { .irq = 24 },
+ { .irq = -1 }
+};
+
+static struct omap_hwmod_addr_space omap3xxx_mmu_isp_addrs[] = {
+ {
+ .pa_start = 0x480bd400,
+ .pa_end = 0x480bd47f,
+ .flags = ADDR_TYPE_RT,
+ },
+ { }
+};
+
+/* l4_core -> mmu isp */
+static struct omap_hwmod_ocp_if omap3xxx_l4_core__mmu_isp = {
+ .master = &omap3xxx_l4_core_hwmod,
+ .slave = &omap3xxx_mmu_isp_hwmod,
+ .addr = omap3xxx_mmu_isp_addrs,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod omap3xxx_mmu_isp_hwmod = {
+ .name = "mmu_isp",
+ .class = &omap3xxx_mmu_hwmod_class,
+ .mpu_irqs = omap3xxx_mmu_isp_irqs,
+ .main_clk = "cam_ick",
+ .dev_attr = &mmu_isp_dev_attr,
+ .flags = HWMOD_NO_IDLEST,
+};
+
+#ifdef CONFIG_OMAP_IOMMU_IVA2
+
+/* mmu iva */
+
+static struct omap_mmu_dev_attr mmu_iva_dev_attr = {
+ .da_start = 0x11000000,
+ .da_end = 0xfffff000,
+ .nr_tlb_entries = 32,
+};
+
+static struct omap_hwmod omap3xxx_mmu_iva_hwmod;
+static struct omap_hwmod_irq_info omap3xxx_mmu_iva_irqs[] = {
+ { .irq = 28 },
+ { .irq = -1 }
+};
+
+static struct omap_hwmod_rst_info omap3xxx_mmu_iva_resets[] = {
+ { .name = "mmu", .rst_shift = 1, .st_shift = 9 },
+};
+
+static struct omap_hwmod_addr_space omap3xxx_mmu_iva_addrs[] = {
+ {
+ .pa_start = 0x5d000000,
+ .pa_end = 0x5d00007f,
+ .flags = ADDR_TYPE_RT,
+ },
+ { }
+};
+
+/* l3_main -> iva mmu */
+static struct omap_hwmod_ocp_if omap3xxx_l3_main__mmu_iva = {
+ .master = &omap3xxx_l3_main_hwmod,
+ .slave = &omap3xxx_mmu_iva_hwmod,
+ .addr = omap3xxx_mmu_iva_addrs,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod omap3xxx_mmu_iva_hwmod = {
+ .name = "mmu_iva",
+ .class = &omap3xxx_mmu_hwmod_class,
+ .mpu_irqs = omap3xxx_mmu_iva_irqs,
+ .rst_lines = omap3xxx_mmu_iva_resets,
+ .rst_lines_cnt = ARRAY_SIZE(omap3xxx_mmu_iva_resets),
+ .main_clk = "iva2_ck",
+ .prcm = {
+ .omap2 = {
+ .module_offs = OMAP3430_IVA2_MOD,
+ },
+ },
+ .dev_attr = &mmu_iva_dev_attr,
+ .flags = HWMOD_NO_IDLEST,
+};
+
+#endif
+
/* l4_per -> gpio4 */
static struct omap_hwmod_addr_space omap3xxx_gpio4_addrs[] = {
{
@@ -3407,6 +3524,10 @@ static struct omap_hwmod_ocp_if *omap34xx_hwmod_ocp_ifs[] __initdata = {
&omap3xxx_l4_core__mailbox,
&omap3xxx_l4_core__hdq1w,
&omap3xxx_sad2d__l3,
+ &omap3xxx_l4_core__mmu_isp,
+#ifdef CONFIG_OMAP_IOMMU_IVA2
+ &omap3xxx_l3_main__mmu_iva,
+#endif
NULL
};
@@ -3428,6 +3549,10 @@ static struct omap_hwmod_ocp_if *omap36xx_hwmod_ocp_ifs[] __initdata = {
&omap3xxx_l4_core__es3plus_mmc2,
&omap3xxx_l4_core__hdq1w,
&omap3xxx_sad2d__l3,
+ &omap3xxx_l4_core__mmu_isp,
+#ifdef CONFIG_OMAP_IOMMU_IVA2
+ &omap3xxx_l3_main__mmu_iva,
+#endif
NULL
};
diff --git a/arch/arm/plat-omap/include/plat/iommu.h b/arch/arm/plat-omap/include/plat/iommu.h
index e58d571..68b5f03 100644
--- a/arch/arm/plat-omap/include/plat/iommu.h
+++ b/arch/arm/plat-omap/include/plat/iommu.h
@@ -103,6 +103,19 @@ struct iommu_functions {
ssize_t (*dump_ctx)(struct omap_iommu *obj, char *buf, ssize_t len);
};
+/**
+ * struct omap_mmu_dev_attr - OMAP mmu device attributes for omap_hwmod
+ * @da_start: device address where the va space starts.
+ * @da_end: device address where the va space ends.
+ * @nr_tlb_entries: number of entries supported by the translation
+ * look-aside buffer (TLB).
+ */
+struct omap_mmu_dev_attr {
+ u32 da_start;
+ u32 da_end;
+ int nr_tlb_entries;
+};
+
struct iommu_platform_data {
const char *name;
const char *clk_name;
--
1.7.10.4
--
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