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94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/** DMA unit test.
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*
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* @file
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2017, Steffen Vogel
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* @license GNU General Public License (version 3)
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*
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* VILLASfpga
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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#include <criterion/criterion.h>
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#include <villas/utils.h>
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#include <villas/fpga/card.h>
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#include <villas/fpga/vlnv.h>
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#include <villas/fpga/ip.h>
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#include <villas/fpga/ips/dma.h>
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#include <villas/log.h>
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#include <villas/list.h>
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extern struct fpga_card *card;
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Test(fpga, dma, .description = "DMA")
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{
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int ret = -1;
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struct dma_mem mem, src, dst;
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for (size_t i = 0; i < list_length(&card->ips); i++) { INDENT
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struct fpga_ip *dm = (struct fpga_ip *) list_at(&card->ips, i);
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if (fpga_vlnv_cmp(&dm->vlnv, &(struct fpga_vlnv) { "xilinx.com", "ip", "axi_dma", NULL }))
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continue; /* skip non DMA IP cores */
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struct dma *dma = (struct dma *) dm->_vd;
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/* Simple DMA can only transfer up to 4 kb due to
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* PCIe page size burst limitation */
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ssize_t len2, len = dma->inst.HasSg ? 64 << 20 : 1 << 12;
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ret = dma_alloc(dm, &mem, 2 * len, 0);
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cr_assert_eq(ret, 0);
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ret = dma_mem_split(&mem, &src, &dst);
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cr_assert_eq(ret, 0);
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/* Get new random data */
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len2 = read_random(src.base_virt, len);
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if (len2 != len)
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serror("Failed to get random data");
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int irq_mm2s = dm->irq;
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int irq_s2mm = dm->irq + 1;
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ret = intc_enable(card->intc, (1 << irq_mm2s) | (1 << irq_s2mm), 0);
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cr_assert_eq(ret, 0, "Failed to enable interrupt");
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ret = switch_connect(card->sw, dm, dm);
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cr_assert_eq(ret, 0, "Failed to configure switch");
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/* Start transfer */
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ret = dma_ping_pong(dm, src.base_phys, dst.base_phys, dst.len);
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cr_assert_eq(ret, 0, "DMA ping pong failed");
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ret = memcmp(src.base_virt, dst.base_virt, src.len);
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info("DMA %s (%s): %s", dm->name, dma->inst.HasSg ? "scatter-gather" : "simple", ret ? CLR_RED("failed") : CLR_GRN("passed"));
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ret = switch_disconnect(card->sw, dm, dm);
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cr_assert_eq(ret, 0, "Failed to configure switch");
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ret = intc_disable(card->intc, (1 << irq_mm2s) | (1 << irq_s2mm));
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cr_assert_eq(ret, 0, "Failed to disable interrupt");
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ret = dma_free(dm, &mem);
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cr_assert_eq(ret, 0, "Failed to release DMA memory");
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}
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cr_assert_eq(ret, 0);
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}
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