From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [v3,3/3] dmaengine: imx-sdma: allocate max 20 bds for one transfer From: Lucas Stach Message-Id: <1532343252.3163.99.camel@pengutronix.de> Date: Mon, 23 Jul 2018 12:54:12 +0200 To: Robin Gong , vkoul@kernel.org, dan.j.williams@intel.com, s.hauer@pengutronix.de, linux@armlinux.org.uk Cc: dmaengine@vger.kernel.org, linux-imx@nxp.com, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org List-ID: QW0gRGllbnN0YWcsIGRlbiAyNC4wNy4yMDE4LCAwMTo0NiArMDgwMCBzY2hyaWViIFJvYmluIEdv bmc6Cj4gSWYgbXVsdGktYmRzIHVzZWQgaW4gb25lIHRyYW5zZmVyLCBhbGwgYmRzIHNob3VsZCBi ZSBjb25zaXN0ZW4KPiBtZW1vcnkuVG8gZWFzaWx5IGZvbGxvdyBpdCwgZW5sYXJnZSB0aGUgZG1h IHBvb2wgc2l6ZSBpbnRvIDIwIGJkcywKPiBhbmQgaXQgd2lsbCByZXBvcnQgZXJyb3IgaWYgdGhl IG51bWJlciBvZiBiZHMgaXMgb3ZlciB0aGFuIDIwLiBGb3IKPiBkbWF0ZXN0LCB0aGUgbWF4IGNv dW50IGZvciBzaW5nbGUgdHJhbnNmZXIgaXMgTlVNX0JEICoKPiBTRE1BX0JEX01BWF9DTlQgPSAy MCAqIDY1NTM1ID0gfjEuMjhNQi4KCkJvdGggdGhlIGNvbW1pdCBtZXNzYWdlIGFuZCB0aGUgY29t bWVudCBuZWVkIGEgbG90IG1vcmUgY2FyZSB0bwphY3R1YWxseSB0ZWxsIHdoYXQgdGhpcyBjb21t aXQgaXMgdHJ5aW5nIHRvIGFjaGlldmUuIEN1cnJlbnRseSBJIGRvbid0CmZvbGxvdyBhdCBhbGwu IFdoYXQgZG9lcyAiY29uc2lzdGVuIiBtZWFuPyBEbyB5b3UgbWVhbiBCRHMgc2hvdWxkIGJlCmNv bnRpZ3VvdXMgaW4gbWVtb3J5PwoKV2hhdCBkbyB5b3UgZ2FpbiBieSBvdmVyLWFsbG9jYXRpbmcg ZWFjaCBCRCBieSBhIGZhY3RvciBvZiAyMD8KClJlZ2FyZHMsCkx1Y2FzCgo+IFNpZ25lZC1vZmYt Ynk6IFJvYmluIEdvbmcgPHlpYmluLmdvbmdAbnhwLmNvbT4KPiAtLS0KPiDCoGRyaXZlcnMvZG1h L2lteC1zZG1hLmMgfCAxNyArKysrKysrKysrKysrKysrLQo+IMKgMSBmaWxlIGNoYW5nZWQsIDE2 IGluc2VydGlvbnMoKyksIDEgZGVsZXRpb24oLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9k bWEvaW14LXNkbWEuYyBiL2RyaXZlcnMvZG1hL2lteC1zZG1hLmMKPiBpbmRleCBiNGVjMmQyLi41 OTczNDg5IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvZG1hL2lteC1zZG1hLmMKPiArKysgYi9kcml2 ZXJzL2RtYS9pbXgtc2RtYS5jCj4gQEAgLTI5OCw2ICsyOTgsMTUgQEAgc3RydWN0IHNkbWFfY29u dGV4dF9kYXRhIHsKPiA+IMKgCXUzMsKgwqBzY3JhdGNoNzsKPiDCoH0gX19hdHRyaWJ1dGVfXyAo KHBhY2tlZCkpOwo+IMKgCj4gKy8qCj4gKyAqIEFsbCBiZHMgaW4gb25lIHRyYW5zZmVyIHNob3Vs ZCBiZSBjb25zaXRlbnQgb24gU0RNQS4gVG8gZWFzaWx5IGZvbGxvdyBpdCxqdXN0Cj4gKyAqIHNl dCB0aGUgZG1hIHBvb2wgc2l6ZSBhcyB0aGUgZW5vdWdoIGJkcy4gRm9yIGV4YW1wbGUsIGluIGRt YXRlc3QgY2FzZSwgdGhlCj4gKyAqIG1heCAyMCBiZHMgbWVhbnMgdGhlIG1heCBmb3Igc2luZ2xl IHRyYW5zZmVyIGlzIE5VTV9CRCAqIFNETUFfQkRfTUFYX0NOVCA9IDIwCj4gKyAqICogNjU1MzUg PSB+MS4yOE1CLiAyMCBiZHMgc3VwcG9zZWQgdG8gYmUgZW5vdWdoIGJhc2ljYWxseS5JZiBpdCdz IHN0aWxsIG5vdAo+ICsgKiBlbm91Z2ggaW4gc29tZSBzcGVjaWZpYyBjYXNlcywgZW5sYXJnZSBp dCBoZXJlLldhcm5pbmcgbWVzc2FnZSB3b3VsZCBhbHNvCj4gKyAqIGFwcGVhciBpZiB0aGUgYmQg bnVtYmVycyBpcyBvdmVyIHRoYW4gMjAuCj4gKyAqLwo+ICsjZGVmaW5lIE5VTV9CRCAyMAo+IMKg Cj4gwqBzdHJ1Y3Qgc2RtYV9lbmdpbmU7Cj4gwqAKPiBAQCAtMTI3Myw3ICsxMjgyLDcgQEAgc3Rh dGljIGludCBzZG1hX2FsbG9jX2NoYW5fcmVzb3VyY2VzKHN0cnVjdCBkbWFfY2hhbiAqY2hhbikK PiA+IMKgCQlnb3RvIGRpc2FibGVfY2xrX2FoYjsKPiDCoAo+ID4gwqAJc2RtYWMtPmJkX3Bvb2wg PSBkbWFfcG9vbF9jcmVhdGUoImJkX3Bvb2wiLCBjaGFuLT5kZXZpY2UtPmRldiwKPiA+IC0JCQkJ c2l6ZW9mKHN0cnVjdCBzZG1hX2J1ZmZlcl9kZXNjcmlwdG9yKSwKPiA+ICsJCQkJTlVNX0JEICog c2l6ZW9mKHN0cnVjdCBzZG1hX2J1ZmZlcl9kZXNjcmlwdG9yKSwKPiA+IMKgCQkJCTMyLCAwKTsK PiDCoAo+ID4gwqAJcmV0dXJuIDA7Cj4gQEAgLTEzMTQsNiArMTMyMywxMiBAQCBzdGF0aWMgc3Ry dWN0IHNkbWFfZGVzYyAqc2RtYV90cmFuc2Zlcl9pbml0KHN0cnVjdCBzZG1hX2NoYW5uZWwgKnNk bWFjLAo+IMKgewo+ID4gwqAJc3RydWN0IHNkbWFfZGVzYyAqZGVzYzsKPiDCoAo+ID4gKwlpZiAo YmRzID4gTlVNX0JEKSB7Cj4gPiArCQlkZXZfZXJyKHNkbWFjLT5zZG1hLT5kZXYsICIlZCBiZHMg ZXhjZWVkIHRoZSBtYXggJWRcbiIsCj4gPiArCQkJYmRzLCBOVU1fQkQpOwo+ID4gKwkJZ290byBl cnJfb3V0Owo+ID4gKwl9Cj4gKwo+ID4gwqAJZGVzYyA9IGt6YWxsb2MoKHNpemVvZigqZGVzYykp LCBHRlBfTk9XQUlUKTsKPiA+IMKgCWlmICghZGVzYykKPiA+IMKgCQlnb3RvIGVycl9vdXQ7Ci0t LQpUbyB1bnN1YnNjcmliZSBmcm9tIHRoaXMgbGlzdDogc2VuZCB0aGUgbGluZSAidW5zdWJzY3Jp YmUgZG1hZW5naW5lIiBpbgp0aGUgYm9keSBvZiBhIG1lc3NhZ2UgdG8gbWFqb3Jkb21vQHZnZXIu a2VybmVsLm9yZwpNb3JlIG1ham9yZG9tbyBpbmZvIGF0ICBodHRwOi8vdmdlci5rZXJuZWwub3Jn L21ham9yZG9tby1pbmZvLmh0bWwK