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,1/6] dma: Add Synopsys eDMA IP core driver From: Gustavo Pimentel Message-Id: <256fef2b-0dea-edee-396a-353520159005@synopsys.com> Date: Thu, 3 Jan 2019 09:53:20 +0000 To: Vinod Koul , Gustavo Pimentel Cc: "linux-pci@vger.kernel.org" , "dmaengine@vger.kernel.org" , Eugeniy Paltsev , Andy Shevchenko , Joao Pinto List-ID: SGkgVmlub2QsCgooc25pcHBlZCkKCj4+PiArewo+Pj4gKwlzdHJ1Y3QgZHdfZWRtYV9jaGFuICpj aGFuID0gZGNoYW4yZHdfZWRtYV9jaGFuKGRjaGFuKTsKPj4+ICsJY29uc3Qgc3RydWN0IGR3X2Vk bWFfY29yZV9vcHMgKm9wcyA9IGNoYW4yb3BzKGNoYW4pOwo+Pj4gKwllbnVtIGRtYV90cmFuc2Zl cl9kaXJlY3Rpb24gZGlyOwo+Pj4gKwl1bnNpZ25lZCBsb25nIGZsYWdzOwo+Pj4gKwlpbnQgZXJy ID0gMDsKPj4+ICsKPj4+ICsJc3Bpbl9sb2NrX2lycXNhdmUoJmNoYW4tPnZjLmxvY2ssIGZsYWdz KTsKPj4+ICsKPj4+ICsJaWYgKCFjb25maWcpIHsKPj4+ICsJCWVyciA9IC1FSU5WQUw7Cj4+PiAr CQlnb3RvIGVycl9jb25maWc7Cj4+PiArCX0KPj4+ICsKPj4+ICsJaWYgKGNoYW4tPmNvbmZpZ3Vy ZWQpIHsKPj4+ICsJCWRldl9lcnIoY2hhbjJkZXYoY2hhbiksICI6IGNoYW5uZWwgYWxyZWFkeSBj b25maWd1cmVkXG4iKTsKPj4+ICsJCWVyciA9IC1FUEVSTTsKPj4+ICsJCWdvdG8gZXJyX2NvbmZp ZzsKPj4+ICsJfQo+Pj4gKwo+Pj4gKwlkaXIgPSBjb25maWctPmRpcmVjdGlvbjsKPj4KPj4gRGly ZWN0aW9uIGlzIGRlcHJlY2lhdGVkLCBJIGhhdmUgYWxyZWFkeSByZW1vdmVkIHRoZSB1c2FnZXMs IHNvIHBsZWFzZQo+PiBkbyBub3QgYWRkIG5ldyBvbmVzLgo+Pgo+PiBZb3UgbmVlZCB0byB0YWtl IGRpcmVjdGlvbiBmb3IgcmVzcGVjdGl2ZSBwcmVwXyBjYWxscwo+IAo+IE9rLCBJIGFscmVhZHkg ZG8gdGhhdC4gSU1ITyBJIGZvdW5kIGl0IHN0cmFuZ2UgdG8gaGF2ZSB0aGUgc2FtZSBpbmZvcm1h dGlvbgo+IHJlcGVhdGVkIG9uIHR3byBwbGFjZXMuIEJ1dCBub3cgdGhhdCB5b3Ugc2F5IHRoYXQg dGhpcyBpcyBkZXByZWNhdGVkLCBpdCBtYWtlcwo+IHNlbnNlIG5vdy4KPiAKPj4KPj4+ICsJaWYg KGRpciA9PSBETUFfREVWX1RPX01FTSAmJiBjaGFuLT5kaXIgPT0gRURNQV9ESVJfV1JJVEUpIHsK Pj4+ICsJCWRldl9pbmZvKGNoYW4yZGV2KGNoYW4pLAo+Pj4gKwkJCSI6IGRpcmVjdGlvbiBETUFf REVWX1RPX01FTSAoRURNQV9ESVJfV1JJVEUpXG4iKTsKPj4+ICsJCWNoYW4tPnBfYWRkciA9IGNv bmZpZy0+c3JjX2FkZHI7Cj4+PiArCX0gZWxzZSBpZiAoZGlyID09IERNQV9NRU1fVE9fREVWICYm IGNoYW4tPmRpciA9PSBFRE1BX0RJUl9SRUFEKSB7Cj4+PiArCQlkZXZfaW5mbyhjaGFuMmRldihj aGFuKSwKPj4+ICsJCQkiOiBkaXJlY3Rpb24gRE1BX01FTV9UT19ERVYgKEVETUFfRElSX1JFQUQp XG4iKTsKPj4+ICsJCWNoYW4tPnBfYWRkciA9IGNvbmZpZy0+ZHN0X2FkZHI7Cj4+PiArCX0gZWxz ZSB7Cj4+PiArCQlkZXZfZXJyKGNoYW4yZGV2KGNoYW4pLCAiOiBpbnZhbGlkIGRpcmVjdGlvblxu Iik7Cj4+PiArCQllcnIgPSAtRUlOVkFMOwo+Pj4gKwkJZ290byBlcnJfY29uZmlnOwo+Pj4gKwl9 Cj4+Cj4+IFRoaXMgc2hvdWxkIGJlIHJlbW92ZWQKPiAKPiBZZWFoLCBpdCB3YXMganVzdCBmb3Ig dmFsaWRhdGlvbiBwdXJwb3Nlcy4gTm93IHRoYXQgZGlyZWN0aW9uIGlzIGRlcHJlY2F0ZWQgb24K PiB0aGUgQVBJLCBtYWtlcyBubyBzZW5zZSB0byB2YWxpZGF0ZSBpdC4KPiAKPj4KPj4+ICsKPj4+ ICsJZGV2X2luZm8oY2hhbjJkZXYoY2hhbiksCj4+PiArCQkiOiBzcmNfYWRkcihwaHlzaWNhbCkg PSAweCUuMTZ4XG4iLCBjb25maWctPnNyY19hZGRyKTsKPj4+ICsJZGV2X2luZm8oY2hhbjJkZXYo Y2hhbiksCj4+PiArCQkiOiBkc3RfYWRkcihwaHlzaWNhbCkgPSAweCUuMTZ4XG4iLCBjb25maWct PmRzdF9hZGRyKTsKPj4KCkkndmUgYSBkb3VidCBub3cuIEFzIHlvdSBrbm93LCBmb3IgYSBETUEg dHJhbnNmZXIgeW91IG5lZWQgdGhlIHNvdXJjZSBhbmQKZGVzdGluYXRpb24gYWRkcmVzc2VzLCB3 aGljaCBpbiB0aGUgbGltaXRlZCBjYW4gYmUgc3dhcHBlZCBhY2NvcmRpbmcgdG8gdGhlCmRpcmVj dGlvbiBNRU1fVE9fREVWL0RFVl9UT19NRU0gY2FzZS4KCkZvciB0aGUgc2FrZSBvZiBzaW1wbGlj aXR5LCBJJ2xsIGp1c3QgY29uc2lkZXIgbm93IHRoZSBNRU1fVE9fREVWIGNhc2UsIHNpbmNlCnRo ZSBvdGhlciBjYXNlIGlzIHNpbWlsYXIgYnV0IHRoZSBzb3VyY2UgYW5kIGRlc3RpbmF0aW9uIGFk ZHJlc3MgYXJlIHN3YXBwZWQuCgpJbiBteSBjb2RlIEkgY2FuIGdldCBzb21lIG9mIHRoZSBpbmZv cm1hdGlvbiB0aGF0IEkgbmVlZCBieSB1c2luZyB0aGUKc2dfZG1hX2FkZHJlc3MoKSBpbiB0aGUg c2NhdHRlci1nYXRoZXIgbGlzdCAod2hpY2ggZ2l2ZXMgbWUgdGhlIHNvdXJjZSBhZGRyZXNzKS4K ClRoZSByZW1haW5pbmcgaW5mb3JtYXRpb24gSSBnb3QgZnJvbSBoZXJlLCB1c2luZyB0aGUgZGly ZWN0aW9uIHRvIGhlbHAgbWUgdG8Kc2VsZWN0IHdoaWNoIGFkZHJlc3MgSSdsbCB1c2UgbGF0ZXIg b24gdGhlIERNQSB0cmFuc2ZlciwgaW4gdGhpcyBjYXNlIHRoZQpkZXN0aW5hdGlvbiBhZGRyZXNz LgoKU2luY2UgdGhpcyBpcyBkZXByZWNhdGVkIGhvdyBzaG91bGQgSSBwcm9jZWVkPyBIb3cgY2Fu IEkgZ2V0IHRoYXQgaW5mb3JtYXRpb24/ClRoZXJlIGlzIHNvbWUgc2ltaWxhciBmdW5jdGlvbiB0 byBzZ19kbWFfYWRkcmVzcygpIHRoYXQgY291bGQgZ2l2ZSBtZSB0aGUKZGVzdGluYXRpb24gYWRk cmVzcz8KClJlZ2FyZHMsCkd1c3Rhdm8K