net: ipa: eliminate legacy arguments

We enable a channel doorbell engine only for IPA v3.5.1, and that is
now handled directly by gsi_channel_program().

When initially setting up a channel, we want that doorbell engine
enabled, and we can request that independent of the IPA version.

Doing that makes the "legacy" argument to gsi_channel_setup_one()
unnecessary.  And with that gone we can get rid of the "legacy"
argument to gsi_channel_setup(), and gsi_setup() as well.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
index f22b5d2..12a2001 100644 (file)
--- a/drivers/net/ipa/gsi.c
+++ b/drivers/net/ipa/gsi.c
@@ -1454,8 +1454,7 @@ static void gsi_evt_ring_teardown(struct gsi *gsi)
 }
 
 /* Setup function for a single channel */
-static int gsi_channel_setup_one(struct gsi *gsi, u32 channel_id,
-                                bool legacy)
+static int gsi_channel_setup_one(struct gsi *gsi, u32 channel_id)
 {
        struct gsi_channel *channel = &gsi->channel[channel_id];
        u32 evt_ring_id = channel->evt_ring_id;
@@ -1474,7 +1473,7 @@ static int gsi_channel_setup_one(struct gsi *gsi, u32 channel_id,
        if (ret)
                goto err_evt_ring_de_alloc;
 
-       gsi_channel_program(channel, legacy);
+       gsi_channel_program(channel, true);
 
        if (channel->toward_ipa)
                netif_tx_napi_add(&gsi->dummy_dev, &channel->napi,
@@ -1551,7 +1550,7 @@ static void gsi_modem_channel_halt(struct gsi *gsi, u32 channel_id)
 }
 
 /* Setup function for channels */
-static int gsi_channel_setup(struct gsi *gsi, bool legacy)
+static int gsi_channel_setup(struct gsi *gsi)
 {
        u32 channel_id = 0;
        u32 mask;
@@ -1563,7 +1562,7 @@ static int gsi_channel_setup(struct gsi *gsi, bool legacy)
        mutex_lock(&gsi->mutex);
 
        do {
-               ret = gsi_channel_setup_one(gsi, channel_id, legacy);
+               ret = gsi_channel_setup_one(gsi, channel_id);
                if (ret)
                        goto err_unwind;
        } while (++channel_id < gsi->channel_count);
@@ -1649,7 +1648,7 @@ static void gsi_channel_teardown(struct gsi *gsi)
 }
 
 /* Setup function for GSI.  GSI firmware must be loaded and initialized */
-int gsi_setup(struct gsi *gsi, bool legacy)
+int gsi_setup(struct gsi *gsi)
 {
        struct device *dev = gsi->dev;
        u32 val;
@@ -1693,7 +1692,7 @@ int gsi_setup(struct gsi *gsi, bool legacy)
        /* Writing 1 indicates IRQ interrupts; 0 would be MSI */
        iowrite32(1, gsi->virt + GSI_CNTXT_INTSET_OFFSET);
 
-       return gsi_channel_setup(gsi, legacy);
+       return gsi_channel_setup(gsi);
 }
 
 /* Inverse of gsi_setup() */

diff --git a/drivers/net/ipa/gsi.h b/drivers/net/ipa/gsi.h
index 36f876f..59ace83 100644 (file)
--- a/drivers/net/ipa/gsi.h
+++ b/drivers/net/ipa/gsi.h
@@ -166,14 +166,13 @@ struct gsi {
 /**
  * gsi_setup() - Set up the GSI subsystem
  * @gsi:       Address of GSI structure embedded in an IPA structure
- * @legacy:    Set up for legacy hardware
  *
  * Return:     0 if successful, or a negative error code
  *
  * Performs initialization that must wait until the GSI hardware is
  * ready (including firmware loaded).
  */
-int gsi_setup(struct gsi *gsi, bool legacy);
+int gsi_setup(struct gsi *gsi);
 
 /**
  * gsi_teardown() - Tear down GSI subsystem

diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c
index 0d3d1a5..a580cab 100644 (file)
--- a/drivers/net/ipa/ipa_main.c
+++ b/drivers/net/ipa/ipa_main.c
@@ -111,8 +111,7 @@ int ipa_setup(struct ipa *ipa)
        struct device *dev = &ipa->pdev->dev;
        int ret;
 
-       /* Setup for IPA v3.5.1 has some slight differences */
-       ret = gsi_setup(&ipa->gsi, ipa->version == IPA_VERSION_3_5_1);
+       ret = gsi_setup(&ipa->gsi);
        if (ret)
                return ret;