pinctrl: imx8m: support i.MX8MP

[oweals/u-boot.git] / drivers / mmc / rpmb.c

diff --git a/drivers/mmc/rpmb.c b/drivers/mmc/rpmb.c
index dfbdb0deb107f06ac3604000ccc8beeac1fa1fca..33371fe562e1124e46215104cca0d9092b353ce5 100644 (file)
--- a/drivers/mmc/rpmb.c
+++ b/drivers/mmc/rpmb.c
@@ -103,7 +103,7 @@ static int mmc_rpmb_request(struct mmc *mmc, const struct s_rpmb *s,
 
        cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
        cmd.cmdarg = 0;
-       cmd.resp_type = MMC_RSP_R1b;
+       cmd.resp_type = MMC_RSP_R1;
 
        data.src = (const char *)s;
        data.blocks = 1;
@@ -321,3 +321,163 @@ int mmc_rpmb_write(struct mmc *mmc, void *addr, unsigned short blk,
        }
        return i;
 }
+
+static int send_write_mult_block(struct mmc *mmc, const struct s_rpmb *frm,
+                                unsigned short cnt)
+{
+       struct mmc_cmd cmd = {
+               .cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK,
+               .resp_type = MMC_RSP_R1,
+       };
+       struct mmc_data data = {
+               .src = (const void *)frm,
+               .blocks = cnt,
+               .blocksize = sizeof(*frm),
+               .flags = MMC_DATA_WRITE,
+       };
+
+       return mmc_send_cmd(mmc, &cmd, &data);
+}
+
+static int send_read_mult_block(struct mmc *mmc, struct s_rpmb *frm,
+                               unsigned short cnt)
+{
+       struct mmc_cmd cmd = {
+               .cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK,
+               .resp_type = MMC_RSP_R1,
+       };
+       struct mmc_data data = {
+               .dest = (void *)frm,
+               .blocks = cnt,
+               .blocksize = sizeof(*frm),
+               .flags = MMC_DATA_READ,
+       };
+
+       return mmc_send_cmd(mmc, &cmd, &data);
+}
+
+static int rpmb_route_write_req(struct mmc *mmc, struct s_rpmb *req,
+                               unsigned short req_cnt, struct s_rpmb *rsp,
+                               unsigned short rsp_cnt)
+{
+       int ret;
+
+       /*
+        * Send the write request.
+        */
+       ret = mmc_set_blockcount(mmc, req_cnt, true);
+       if (ret)
+               return ret;
+
+       ret = send_write_mult_block(mmc, req, req_cnt);
+       if (ret)
+               return ret;
+
+       /*
+        * Read the result of the request.
+        */
+       ret = mmc_set_blockcount(mmc, 1, false);
+       if (ret)
+               return ret;
+
+       memset(rsp, 0, sizeof(*rsp));
+       rsp->request = cpu_to_be16(RPMB_REQ_STATUS);
+       ret = send_write_mult_block(mmc, rsp, 1);
+       if (ret)
+               return ret;
+
+       ret = mmc_set_blockcount(mmc, 1, false);
+       if (ret)
+               return ret;
+
+       return send_read_mult_block(mmc, rsp, 1);
+}
+
+static int rpmb_route_read_req(struct mmc *mmc, struct s_rpmb *req,
+                              unsigned short req_cnt, struct s_rpmb *rsp,
+                              unsigned short rsp_cnt)
+{
+       int ret;
+
+       /*
+        * Send the read request.
+        */
+       ret = mmc_set_blockcount(mmc, 1, false);
+       if (ret)
+               return ret;
+
+       ret = send_write_mult_block(mmc, req, 1);
+       if (ret)
+               return ret;
+
+       /*
+        * Read the result of the request.
+        */
+
+       ret = mmc_set_blockcount(mmc, rsp_cnt, false);
+       if (ret)
+               return ret;
+
+       return send_read_mult_block(mmc, rsp, rsp_cnt);
+}
+
+static int rpmb_route_frames(struct mmc *mmc, struct s_rpmb *req,
+                            unsigned short req_cnt, struct s_rpmb *rsp,
+                            unsigned short rsp_cnt)
+{
+       unsigned short n;
+
+       /*
+        * If multiple request frames are provided, make sure that all are
+        * of the same type.
+        */
+       for (n = 1; n < req_cnt; n++)
+               if (req[n].request != req->request)
+                       return -EINVAL;
+
+       switch (be16_to_cpu(req->request)) {
+       case RPMB_REQ_KEY:
+               if (req_cnt != 1 || rsp_cnt != 1)
+                       return -EINVAL;
+               return rpmb_route_write_req(mmc, req, req_cnt, rsp, rsp_cnt);
+
+       case RPMB_REQ_WRITE_DATA:
+               if (!req_cnt || rsp_cnt != 1)
+                       return -EINVAL;
+               return rpmb_route_write_req(mmc, req, req_cnt, rsp, rsp_cnt);
+
+       case RPMB_REQ_WCOUNTER:
+               if (req_cnt != 1 || rsp_cnt != 1)
+                       return -EINVAL;
+               return rpmb_route_read_req(mmc, req, req_cnt, rsp, rsp_cnt);
+
+       case RPMB_REQ_READ_DATA:
+               if (req_cnt != 1 || !req_cnt)
+                       return -EINVAL;
+               return rpmb_route_read_req(mmc, req, req_cnt, rsp, rsp_cnt);
+
+       default:
+               debug("Unsupported message type: %d\n",
+                     be16_to_cpu(req->request));
+               return -EINVAL;
+       }
+}
+
+int mmc_rpmb_route_frames(struct mmc *mmc, void *req, unsigned long reqlen,
+                         void *rsp, unsigned long rsplen)
+{
+       /*
+        * Whoever crafted the data supplied to this function knows how to
+        * format the PRMB frames and which response is expected. If
+        * there's some unexpected mismatch it's more helpful to report an
+        * error immediately than trying to guess what was the intention
+        * and possibly just delay an eventual error which will be harder
+        * to track down.
+        */
+
+       if (reqlen % sizeof(struct s_rpmb) || rsplen % sizeof(struct s_rpmb))
+               return -EINVAL;
+
+       return rpmb_route_frames(mmc, req, reqlen / sizeof(struct s_rpmb),
+                                rsp, rsplen / sizeof(struct s_rpmb));
+}