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dpaa: Add "libbsd,dequeue" to QMan portals

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The dequeue support for processor affine QMan portals may be explicitly
disabled. The dequeue support is responsible for receiving frames and
completion of frame transmission, e.g. buffer recycling. Without at
least one enabled dequeue support, there will be no networking.

/ {
        qman-portals@ff6000000 {
                qman-portal@0 {
                        libbsd,dequeue = "disabled";
                };
        };
};
This commit is contained in:
Sebastian Huber 2017-06-23 11:39:26 +02:00
parent 3cfc31cb0c
commit e818128789
1 changed files with 32 additions and 13 deletions
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45
linux/drivers/soc/fsl/qbman/qman_portal.c
View File

@ -381,7 +381,19 @@ module_driver(qman_portal_driver,
#include <linux/of_address.h> #include <linux/of_address.h>
#include <linux/of_irq.h> #include <linux/of_irq.h>
static struct qm_portal_config qman_configs[NR_CPUS]; #define MAX_QMAN_PORTALS 50
static struct qm_portal_config qman_configs[MAX_QMAN_PORTALS];
static bool
is_dequeue_enabled(const struct device_node *dn)
{
const char *dequeue;
int len;
dequeue = of_get_property(dn, "libbsd,dequeue", &len);
return (len <= 0 || strcmp(dequeue, "disabled") != 0);
}
void void
qman_sysinit_portals(void) qman_sysinit_portals(void)
@ -390,7 +402,7 @@ qman_sysinit_portals(void)
struct device_node dn; struct device_node dn;
const char *name; const char *name;
int cpu_count = (int)rtems_get_processor_count(); int cpu_count = (int)rtems_get_processor_count();
int cpu; int i;
int ret; int ret;
int node; int node;
int parent; int parent;
@ -414,15 +426,12 @@ qman_sysinit_portals(void)
qoriq_clear_ci_portal(&qoriq_qman_portal[1][0], qoriq_clear_ci_portal(&qoriq_qman_portal[1][0],
sizeof(qoriq_qman_portal[1])); sizeof(qoriq_qman_portal[1]));
for (cpu = 0; cpu < cpu_count; ++cpu) { for (i = 0; node >= 0 && i < MAX_QMAN_PORTALS; ++i) {
struct qm_portal_config *pcfg = &qman_configs[cpu]; struct qm_portal_config *pcfg = &qman_configs[i];
struct qman_portal *portal; struct qman_portal *portal;
struct resource res; struct resource res;
u32 val; u32 val;
if (node < 0)
panic("qman: missing portal in FDT");
ret = of_address_to_resource(&dn, 0, &res); ret = of_address_to_resource(&dn, 0, &res);
if (ret != 0) if (ret != 0)
panic("qman: no portal CE address"); panic("qman: no portal CE address");
@ -452,19 +461,29 @@ qman_sysinit_portals(void)
if (pcfg->irq == NO_IRQ) if (pcfg->irq == NO_IRQ)
panic("qman: no portal interrupt"); panic("qman: no portal interrupt");
pcfg->cpu = cpu; if (val < cpu_count) {
pcfg->pools = qm_get_pools_sdqcr(); pcfg->cpu = val;
portal = init_pcfg(pcfg); if (is_dequeue_enabled(&dn)) {
if (portal == NULL) pcfg->pools = qm_get_pools_sdqcr();
panic("qman: cannot create portal"); }
qman_portal_update_sdest(pcfg, cpu); portal = init_pcfg(pcfg);
if (portal == NULL)
panic("qman: cannot create portal");
qman_portal_update_sdest(pcfg, val);
} else {
pcfg->cpu = -1;
}
node = fdt_next_subnode(fdt, node); node = fdt_next_subnode(fdt, node);
dn.offset = node; dn.offset = node;
} }
if (i < cpu_count)
panic("qman: not enough portals in FDT");
/* all assigned portals are initialized now */ /* all assigned portals are initialized now */
qman_init_cgr_all(); qman_init_cgr_all();
} }