diff options
Diffstat (limited to 'drivers/staging/fsl-mc/bus/dprc-driver.c')
| -rw-r--r-- | drivers/staging/fsl-mc/bus/dprc-driver.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/drivers/staging/fsl-mc/bus/dprc-driver.c b/drivers/staging/fsl-mc/bus/dprc-driver.c index 31488a7b9e86..7fc47173c164 100644 --- a/drivers/staging/fsl-mc/bus/dprc-driver.c +++ b/drivers/staging/fsl-mc/bus/dprc-driver.c @@ -312,6 +312,15 @@ int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev, continue; } + /* + * add a quirk for all versions of dpsec < 4.0...none + * are coherent regardless of what the MC reports. + */ + if ((strcmp(obj_desc->type, "dpseci") == 0) && + (obj_desc->ver_major < 4)) + obj_desc->flags |= + DPRC_OBJ_FLAG_NO_MEM_SHAREABILITY; + irq_count += obj_desc->irq_count; dev_dbg(&mc_bus_dev->dev, "Discovered object: type %s, id %d\n", @@ -423,6 +432,7 @@ static irqreturn_t dprc_irq0_handler_thread(int irq_num, void *arg) if (WARN_ON(!msi_desc || msi_desc->irq != (u32)irq_num)) goto out; + status = 0; error = dprc_get_irq_status(mc_io, 0, mc_dev->mc_handle, 0, &status); if (error < 0) { @@ -692,6 +702,25 @@ static int dprc_probe(struct fsl_mc_device *mc_dev) goto error_cleanup_msi_domain; } + error = dprc_get_attributes(mc_dev->mc_io, 0, mc_dev->mc_handle, + &mc_bus->dprc_attr); + if (error < 0) { + dev_err(&mc_dev->dev, "dprc_get_attributes() failed: %d\n", + error); + goto error_cleanup_open; + } + + if (mc_bus->dprc_attr.version.major < DPRC_MIN_VER_MAJOR || + (mc_bus->dprc_attr.version.major == DPRC_MIN_VER_MAJOR && + mc_bus->dprc_attr.version.minor < DPRC_MIN_VER_MINOR)) { + dev_err(&mc_dev->dev, + "ERROR: DPRC version %d.%d not supported\n", + mc_bus->dprc_attr.version.major, + mc_bus->dprc_attr.version.minor); + error = -ENOTSUPP; + goto error_cleanup_open; + } + mutex_init(&mc_bus->scan_mutex); /* @@ -779,9 +808,7 @@ static int dprc_remove(struct fsl_mc_device *mc_dev) static const struct fsl_mc_device_match_id match_id_table[] = { { .vendor = FSL_MC_VENDOR_FREESCALE, - .obj_type = "dprc", - .ver_major = DPRC_VER_MAJOR, - .ver_minor = DPRC_VER_MINOR}, + .obj_type = "dprc"}, {.vendor = 0x0}, }; |