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: [RFC,1/5] dmaengine: Add support for reporting DMA cached data amount From: Peter Ujfalusi Message-Id: <486f5627-7f23-57fd-0db2-54dd4683e93b@ti.com> Date: Tue, 9 Oct 2018 14:05:51 +0300 To: Vinod Cc: dan.j.williams@intel.com, dmaengine@vger.kernel.org, grygorii.strashko@ti.com List-ID: T24gMjAxOC0xMC0wOSAxMzo0NywgVmlub2Qgd3JvdGU6Cj4gT24gMjQtMDktMTgsIDE2OjAwLCBQ ZXRlciBVamZhbHVzaSB3cm90ZToKPj4gQSBETUEgaGFyZHdhcmUgY2FuIGhhdmUgYmlnIGNhY2hl IG9yIEZJRk8gYW5kIHRoZSBhbW91bnQgb2YgZGF0YSBzaXR0aW5nIGluCj4+IHRoZSBETUEgZmFi cmljIGNhbiBiZSBhbiBpbnRlcmVzdCBmb3IgdGhlIGNsaWVudHMuCj4+Cj4+IEZvciBleGFtcGxl IGluIGF1ZGlvIHdlIHdhbnQgdG8ga25vdyB0aGUgZGVsYXkgaW4gdGhlIGRhdGEgZmxvdyBhbmQg aW4gY2FzZQo+PiB0aGUgRE1BIGhhdmUgc2lnbmlmaWNhbnRseSBsYXJnZSBGSUZPL2NhY2hlLCBp dCBjYW4gYWZmZWN0IHRoZSBsYXRlbmMvZGVsYXkKPiAKPiB0aGlzIGxvb2tzIG9rYXkgdG8gbWUs IGJ1dCBub3QgcmVhbGx5IHVwIGZvciAnY2FjaGVkJywgYmV0dGVyCj4gYWx0ZXJuYXRlcz8KCkl0 IGlzIGFmdGVyIGFsbCB0aGUgYW1vdW50IG9mIGJ5dGVzIGNhY2hlZCB3aXRoaW4gdGhlIERNQSBm YWJyaWMsIGJ1dCBJCmFncmVlIGl0IGlzIGEgYml0IGF3a3dhcmQuCgpSZWNlbnRseSBJIHRyaWVk IHRvIGNvbWUgdXAgd2l0aCBzb21ldGhpbmcgYmV0dGVyLCBidXQgZGlkIG5vdCB3ZW50IHRvbwpm YXIuLi4KZG1hX2NhY2hlZF9ieXRlcz8KZG1hX2hlbGRfYnl0ZXM/CmluX2ZsaWdodF9ieXRlcz8K bm90X2luX3NvdXJjZV9idXRfbm90X3lldF9pbl9kZXN0aW5hdGlvbl9ieXRlcyA6RCA/CgpJIHRy eSB0byBjb21lIHVwIHdpdGggc29tZXRoaW5nIGZvciB0aGUgaW5pdGlhbCBzZXJpZXMuCgo+IEFs c28gd2UgbmVlZCB0byB1cGRhdGUgRG9jdW1lbnRhdGlvbiBmb3IgdGhpcy4uCgpTdXJlLCBJIHRl bmQgdG8gZm9yZ2V0IHRoYXQuCgo+IAo+Pgo+PiBTaWduZWQtb2ZmLWJ5OiBQZXRlciBVamZhbHVz aSA8cGV0ZXIudWpmYWx1c2lAdGkuY29tPgo+PiAtLS0KPj4gIGRyaXZlcnMvZG1hL2RtYWVuZ2lu ZS5oICAgfCA3ICsrKysrKysKPj4gIGluY2x1ZGUvbGludXgvZG1hZW5naW5lLmggfCAyICsrCj4+ ICAyIGZpbGVzIGNoYW5nZWQsIDkgaW5zZXJ0aW9ucygrKQo+Pgo+PiBkaWZmIC0tZ2l0IGEvZHJp dmVycy9kbWEvZG1hZW5naW5lLmggYi9kcml2ZXJzL2RtYS9kbWFlbmdpbmUuaAo+PiBpbmRleCA1 MDFjMGIwNjNmODUuLjgwMjE0MjcwYjcwZSAxMDA2NDQKPj4gLS0tIGEvZHJpdmVycy9kbWEvZG1h ZW5naW5lLmgKPj4gKysrIGIvZHJpdmVycy9kbWEvZG1hZW5naW5lLmgKPj4gQEAgLTc3LDYgKzc3 LDcgQEAgc3RhdGljIGlubGluZSBlbnVtIGRtYV9zdGF0dXMgZG1hX2Nvb2tpZV9zdGF0dXMoc3Ry dWN0IGRtYV9jaGFuICpjaGFuLAo+PiAgCQlzdGF0ZS0+bGFzdCA9IGNvbXBsZXRlOwo+PiAgCQlz dGF0ZS0+dXNlZCA9IHVzZWQ7Cj4+ICAJCXN0YXRlLT5yZXNpZHVlID0gMDsKPj4gKwkJc3RhdGUt PmNhY2hlZCA9IDA7Cj4+ICAJfQo+PiAgCXJldHVybiBkbWFfYXN5bmNfaXNfY29tcGxldGUoY29v a2llLCBjb21wbGV0ZSwgdXNlZCk7Cj4+ICB9Cj4+IEBAIC04Nyw2ICs4OCwxMiBAQCBzdGF0aWMg aW5saW5lIHZvaWQgZG1hX3NldF9yZXNpZHVlKHN0cnVjdCBkbWFfdHhfc3RhdGUgKnN0YXRlLCB1 MzIgcmVzaWR1ZSkKPj4gIAkJc3RhdGUtPnJlc2lkdWUgPSByZXNpZHVlOwo+PiAgfQo+PiAgCj4+ ICtzdGF0aWMgaW5saW5lIHZvaWQgZG1hX3NldF9jYWNoZWQoc3RydWN0IGRtYV90eF9zdGF0ZSAq c3RhdGUsIHUzMiBjYWNoZWQpCj4+ICt7Cj4+ICsJaWYgKHN0YXRlKQo+PiArCQlzdGF0ZS0+Y2Fj aGVkID0gY2FjaGVkOwo+PiArfQo+PiArCj4+ICBzdHJ1Y3QgZG1hZW5naW5lX2Rlc2NfY2FsbGJh Y2sgewo+PiAgCWRtYV9hc3luY190eF9jYWxsYmFjayBjYWxsYmFjazsKPj4gIAlkbWFfYXN5bmNf dHhfY2FsbGJhY2tfcmVzdWx0IGNhbGxiYWNrX3Jlc3VsdDsKPj4gZGlmZiAtLWdpdCBhL2luY2x1 ZGUvbGludXgvZG1hZW5naW5lLmggYi9pbmNsdWRlL2xpbnV4L2RtYWVuZ2luZS5oCj4+IGluZGV4 IDEwZmY3MWIxM2VlZi4uMTZjOWQwMjE5ODhhIDEwMDY0NAo+PiAtLS0gYS9pbmNsdWRlL2xpbnV4 L2RtYWVuZ2luZS5oCj4+ICsrKyBiL2luY2x1ZGUvbGludXgvZG1hZW5naW5lLmgKPj4gQEAgLTcw MSwxMSArNzAxLDEzIEBAIHN0YXRpYyBpbmxpbmUgc3RydWN0IGRtYV9hc3luY190eF9kZXNjcmlw dG9yICp0eGRfbmV4dChzdHJ1Y3QgZG1hX2FzeW5jX3R4X2Rlc2NyCj4+ICAgKiBAcmVzaWR1ZTog dGhlIHJlbWFpbmluZyBudW1iZXIgb2YgYnl0ZXMgbGVmdCB0byB0cmFuc21pdAo+PiAgICoJb24g dGhlIHNlbGVjdGVkIHRyYW5zZmVyIGZvciBzdGF0ZXMgRE1BX0lOX1BST0dSRVNTIGFuZAo+PiAg ICoJRE1BX1BBVVNFRCBpZiB0aGlzIGlzIGltcGxlbWVudGVkIGluIHRoZSBkcml2ZXIsIGVsc2Ug MAo+PiArICogQGNhY2hlZDogYW1vdW50IG9mIGRhdGEgaW4gYnl0ZXMgY2FjaGVkIGJ5IHRoZSBE TUEuCj4+ICAgKi8KPj4gIHN0cnVjdCBkbWFfdHhfc3RhdGUgewo+PiAgCWRtYV9jb29raWVfdCBs YXN0Owo+PiAgCWRtYV9jb29raWVfdCB1c2VkOwo+PiAgCXUzMiByZXNpZHVlOwo+PiArCXUzMiBj YWNoZWQ7Cj4+ICB9Owo+PiAgCj4+ICAvKioKPj4gLS0gCj4+IFBldGVyCj4+Cj4+IFRleGFzIElu c3RydW1lbnRzIEZpbmxhbmQgT3ksIFBvcmtrYWxhbmthdHUgMjIsIDAwMTgwIEhlbHNpbmtpLgo+ PiBZLXR1bm51cy9CdXNpbmVzcyBJRDogMDYxNTUyMS00LiBLb3RpcGFpa2thL0RvbWljaWxlOiBI ZWxzaW5raQo+IAoKLSBQw6l0ZXIKClRleGFzIEluc3RydW1lbnRzIEZpbmxhbmQgT3ksIFBvcmtr YWxhbmthdHUgMjIsIDAwMTgwIEhlbHNpbmtpLgpZLXR1bm51cy9CdXNpbmVzcyBJRDogMDYxNTUy MS00LiBLb3RpcGFpa2thL0RvbWljaWxlOiBIZWxzaW5raQo=