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path: root/drivers/soc/fsl/qbman/qman_portal.c
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Diffstat (limited to 'drivers/soc/fsl/qbman/qman_portal.c')
-rw-r--r--drivers/soc/fsl/qbman/qman_portal.c154
1 files changed, 69 insertions, 85 deletions
diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c
index adbaa30d3c5a..456ef5d5c199 100644
--- a/drivers/soc/fsl/qbman/qman_portal.c
+++ b/drivers/soc/fsl/qbman/qman_portal.c
@@ -38,6 +38,7 @@ EXPORT_SYMBOL(qman_dma_portal);
#define CONFIG_FSL_DPA_PIRQ_FAST 1
static struct cpumask portal_cpus;
+static int __qman_portals_probed;
/* protect qman global registers and global data shared among portals */
static DEFINE_SPINLOCK(qman_lock);
@@ -45,48 +46,17 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu)
{
#ifdef CONFIG_FSL_PAMU
struct device *dev = pcfg->dev;
- int window_count = 1;
- struct iommu_domain_geometry geom_attr;
- struct pamu_stash_attribute stash_attr;
int ret;
- pcfg->iommu_domain = iommu_domain_alloc(&platform_bus_type);
- if (!pcfg->iommu_domain) {
+ pcfg->iommu_domain = iommu_paging_domain_alloc(dev);
+ if (IS_ERR(pcfg->iommu_domain)) {
dev_err(dev, "%s(): iommu_domain_alloc() failed", __func__);
+ pcfg->iommu_domain = NULL;
goto no_iommu;
}
- geom_attr.aperture_start = 0;
- geom_attr.aperture_end =
- ((dma_addr_t)1 << min(8 * sizeof(dma_addr_t), (size_t)36)) - 1;
- geom_attr.force_aperture = true;
- ret = iommu_domain_set_attr(pcfg->iommu_domain, DOMAIN_ATTR_GEOMETRY,
- &geom_attr);
+ ret = fsl_pamu_configure_l1_stash(pcfg->iommu_domain, cpu);
if (ret < 0) {
- dev_err(dev, "%s(): iommu_domain_set_attr() = %d", __func__,
- ret);
- goto out_domain_free;
- }
- ret = iommu_domain_set_attr(pcfg->iommu_domain, DOMAIN_ATTR_WINDOWS,
- &window_count);
- if (ret < 0) {
- dev_err(dev, "%s(): iommu_domain_set_attr() = %d", __func__,
- ret);
- goto out_domain_free;
- }
- stash_attr.cpu = cpu;
- stash_attr.cache = PAMU_ATTR_CACHE_L1;
- ret = iommu_domain_set_attr(pcfg->iommu_domain,
- DOMAIN_ATTR_FSL_PAMU_STASH,
- &stash_attr);
- if (ret < 0) {
- dev_err(dev, "%s(): iommu_domain_set_attr() = %d",
- __func__, ret);
- goto out_domain_free;
- }
- ret = iommu_domain_window_enable(pcfg->iommu_domain, 0, 0, 1ULL << 36,
- IOMMU_READ | IOMMU_WRITE);
- if (ret < 0) {
- dev_err(dev, "%s(): iommu_domain_window_enable() = %d",
+ dev_err(dev, "%s(): fsl_pamu_configure_l1_stash() = %d",
__func__, ret);
goto out_domain_free;
}
@@ -96,14 +66,6 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu)
ret);
goto out_domain_free;
}
- ret = iommu_domain_set_attr(pcfg->iommu_domain,
- DOMAIN_ATTR_FSL_PAMU_ENABLE,
- &window_count);
- if (ret < 0) {
- dev_err(dev, "%s(): iommu_domain_set_attr() = %d", __func__,
- ret);
- goto out_detach_device;
- }
no_iommu:
#endif
@@ -112,8 +74,6 @@ no_iommu:
return;
#ifdef CONFIG_FSL_PAMU
-out_detach_device:
- iommu_detach_device(pcfg->iommu_domain, NULL);
out_domain_free:
iommu_domain_free(pcfg->iommu_domain);
pcfg->iommu_domain = NULL;
@@ -168,15 +128,8 @@ static void qman_portal_update_sdest(const struct qm_portal_config *pcfg,
unsigned int cpu)
{
#ifdef CONFIG_FSL_PAMU /* TODO */
- struct pamu_stash_attribute stash_attr;
- int ret;
-
if (pcfg->iommu_domain) {
- stash_attr.cpu = cpu;
- stash_attr.cache = PAMU_ATTR_CACHE_L1;
- ret = iommu_domain_set_attr(pcfg->iommu_domain,
- DOMAIN_ATTR_FSL_PAMU_STASH, &stash_attr);
- if (ret < 0) {
+ if (fsl_pamu_configure_l1_stash(pcfg->iommu_domain, cpu) < 0) {
dev_err(pcfg->dev,
"Failed to update pamu stash setting\n");
return;
@@ -195,8 +148,10 @@ static int qman_offline_cpu(unsigned int cpu)
if (p) {
pcfg = qman_get_qm_portal_config(p);
if (pcfg) {
- irq_set_affinity(pcfg->irq, cpumask_of(0));
- qman_portal_update_sdest(pcfg, 0);
+ /* select any other online CPU */
+ cpu = cpumask_any_but(cpu_online_mask, cpu);
+ irq_set_affinity(pcfg->irq, cpumask_of(cpu));
+ qman_portal_update_sdest(pcfg, cpu);
}
}
return 0;
@@ -218,78 +173,88 @@ static int qman_online_cpu(unsigned int cpu)
return 0;
}
+int qman_portals_probed(void)
+{
+ return __qman_portals_probed;
+}
+EXPORT_SYMBOL_GPL(qman_portals_probed);
+
static int qman_portal_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct qm_portal_config *pcfg;
struct resource *addr_phys[2];
- void __iomem *va;
- int irq, cpu, err;
+ int irq, cpu, err, i;
u32 val;
+ err = qman_is_probed();
+ if (!err)
+ return -EPROBE_DEFER;
+ if (err < 0) {
+ dev_err(&pdev->dev, "failing probe due to qman probe error\n");
+ return -ENODEV;
+ }
+
pcfg = devm_kmalloc(dev, sizeof(*pcfg), GFP_KERNEL);
- if (!pcfg)
+ if (!pcfg) {
+ __qman_portals_probed = -1;
return -ENOMEM;
+ }
pcfg->dev = dev;
addr_phys[0] = platform_get_resource(pdev, IORESOURCE_MEM,
DPAA_PORTAL_CE);
if (!addr_phys[0]) {
- dev_err(dev, "Can't get %s property 'reg::CE'\n",
- node->full_name);
- return -ENXIO;
+ dev_err(dev, "Can't get %pOF property 'reg::CE'\n", node);
+ goto err_ioremap1;
}
addr_phys[1] = platform_get_resource(pdev, IORESOURCE_MEM,
DPAA_PORTAL_CI);
if (!addr_phys[1]) {
- dev_err(dev, "Can't get %s property 'reg::CI'\n",
- node->full_name);
- return -ENXIO;
+ dev_err(dev, "Can't get %pOF property 'reg::CI'\n", node);
+ goto err_ioremap1;
}
err = of_property_read_u32(node, "cell-index", &val);
if (err) {
- dev_err(dev, "Can't get %s property 'cell-index'\n",
- node->full_name);
+ dev_err(dev, "Can't get %pOF property 'cell-index'\n", node);
+ __qman_portals_probed = -1;
return err;
}
pcfg->channel = val;
pcfg->cpu = -1;
irq = platform_get_irq(pdev, 0);
- if (irq <= 0) {
- dev_err(dev, "Can't get %s IRQ\n", node->full_name);
- return -ENXIO;
- }
+ if (irq <= 0)
+ goto err_ioremap1;
pcfg->irq = irq;
- va = ioremap_prot(addr_phys[0]->start, resource_size(addr_phys[0]), 0);
- if (!va) {
- dev_err(dev, "ioremap::CE failed\n");
+ pcfg->addr_virt_ce = memremap(addr_phys[0]->start,
+ resource_size(addr_phys[0]),
+ QBMAN_MEMREMAP_ATTR);
+ if (!pcfg->addr_virt_ce) {
+ dev_err(dev, "memremap::CE failed\n");
goto err_ioremap1;
}
- pcfg->addr_virt[DPAA_PORTAL_CE] = va;
-
- va = ioremap_prot(addr_phys[1]->start, resource_size(addr_phys[1]),
- _PAGE_GUARDED | _PAGE_NO_CACHE);
- if (!va) {
+ pcfg->addr_virt_ci = ioremap(addr_phys[1]->start,
+ resource_size(addr_phys[1]));
+ if (!pcfg->addr_virt_ci) {
dev_err(dev, "ioremap::CI failed\n");
goto err_ioremap2;
}
- pcfg->addr_virt[DPAA_PORTAL_CI] = va;
-
pcfg->pools = qm_get_pools_sdqcr();
spin_lock(&qman_lock);
- cpu = cpumask_next_zero(-1, &portal_cpus);
+ cpu = cpumask_first_zero(&portal_cpus);
if (cpu >= nr_cpu_ids) {
+ __qman_portals_probed = 1;
/* unassigned portal, skip init */
spin_unlock(&qman_lock);
- return 0;
+ goto check_cleanup;
}
cpumask_set_cpu(cpu, &portal_cpus);
@@ -310,13 +275,32 @@ static int qman_portal_probe(struct platform_device *pdev)
if (!cpu_online(cpu))
qman_offline_cpu(cpu);
+check_cleanup:
+ if (__qman_portals_probed == 1 && qman_requires_cleanup()) {
+ /*
+ * QMan wasn't reset prior to boot (Kexec for example)
+ * Empty all the frame queues so they are in reset state
+ */
+ for (i = 0; i < qm_get_fqid_maxcnt(); i++) {
+ err = qman_shutdown_fq(i);
+ if (err) {
+ dev_err(dev, "Failed to shutdown frame queue %d\n",
+ i);
+ goto err_portal_init;
+ }
+ }
+ qman_done_cleanup();
+ }
+
return 0;
err_portal_init:
- iounmap(pcfg->addr_virt[DPAA_PORTAL_CI]);
+ iounmap(pcfg->addr_virt_ci);
err_ioremap2:
- iounmap(pcfg->addr_virt[DPAA_PORTAL_CE]);
+ memunmap(pcfg->addr_virt_ce);
err_ioremap1:
+ __qman_portals_probed = -1;
+
return -ENXIO;
}
generated by cgit (git 2.34.1) at 2025-12-26 05:45:02 +0000