[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/scsi/jazz_esp.c b/src/kernel/linux/v4.14/drivers/scsi/jazz_esp.c
new file mode 100644
index 0000000..9aaa74e
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/scsi/jazz_esp.c
@@ -0,0 +1,248 @@
+/* jazz_esp.c: ESP front-end for MIPS JAZZ systems.
+ *
+ * Copyright (C) 2007 Thomas Bogendörfer (tsbogend@alpha.frankende)
+ */
+
+#include <linux/kernel.h>
+#include <linux/gfp.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include <asm/jazz.h>
+#include <asm/jazzdma.h>
+
+#include <scsi/scsi_host.h>
+
+#include "esp_scsi.h"
+
+#define DRV_MODULE_NAME "jazz_esp"
+#define PFX DRV_MODULE_NAME ": "
+#define DRV_VERSION "1.000"
+#define DRV_MODULE_RELDATE "May 19, 2007"
+
+static void jazz_esp_write8(struct esp *esp, u8 val, unsigned long reg)
+{
+ *(volatile u8 *)(esp->regs + reg) = val;
+}
+
+static u8 jazz_esp_read8(struct esp *esp, unsigned long reg)
+{
+ return *(volatile u8 *)(esp->regs + reg);
+}
+
+static dma_addr_t jazz_esp_map_single(struct esp *esp, void *buf,
+ size_t sz, int dir)
+{
+ return dma_map_single(esp->dev, buf, sz, dir);
+}
+
+static int jazz_esp_map_sg(struct esp *esp, struct scatterlist *sg,
+ int num_sg, int dir)
+{
+ return dma_map_sg(esp->dev, sg, num_sg, dir);
+}
+
+static void jazz_esp_unmap_single(struct esp *esp, dma_addr_t addr,
+ size_t sz, int dir)
+{
+ dma_unmap_single(esp->dev, addr, sz, dir);
+}
+
+static void jazz_esp_unmap_sg(struct esp *esp, struct scatterlist *sg,
+ int num_sg, int dir)
+{
+ dma_unmap_sg(esp->dev, sg, num_sg, dir);
+}
+
+static int jazz_esp_irq_pending(struct esp *esp)
+{
+ if (jazz_esp_read8(esp, ESP_STATUS) & ESP_STAT_INTR)
+ return 1;
+ return 0;
+}
+
+static void jazz_esp_reset_dma(struct esp *esp)
+{
+ vdma_disable ((int)esp->dma_regs);
+}
+
+static void jazz_esp_dma_drain(struct esp *esp)
+{
+ /* nothing to do */
+}
+
+static void jazz_esp_dma_invalidate(struct esp *esp)
+{
+ vdma_disable ((int)esp->dma_regs);
+}
+
+static void jazz_esp_send_dma_cmd(struct esp *esp, u32 addr, u32 esp_count,
+ u32 dma_count, int write, u8 cmd)
+{
+ BUG_ON(!(cmd & ESP_CMD_DMA));
+
+ jazz_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);
+ jazz_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);
+ vdma_disable ((int)esp->dma_regs);
+ if (write)
+ vdma_set_mode ((int)esp->dma_regs, DMA_MODE_READ);
+ else
+ vdma_set_mode ((int)esp->dma_regs, DMA_MODE_WRITE);
+
+ vdma_set_addr ((int)esp->dma_regs, addr);
+ vdma_set_count ((int)esp->dma_regs, dma_count);
+ vdma_enable ((int)esp->dma_regs);
+
+ scsi_esp_cmd(esp, cmd);
+}
+
+static int jazz_esp_dma_error(struct esp *esp)
+{
+ u32 enable = vdma_get_enable((int)esp->dma_regs);
+
+ if (enable & (R4030_MEM_INTR|R4030_ADDR_INTR))
+ return 1;
+
+ return 0;
+}
+
+static const struct esp_driver_ops jazz_esp_ops = {
+ .esp_write8 = jazz_esp_write8,
+ .esp_read8 = jazz_esp_read8,
+ .map_single = jazz_esp_map_single,
+ .map_sg = jazz_esp_map_sg,
+ .unmap_single = jazz_esp_unmap_single,
+ .unmap_sg = jazz_esp_unmap_sg,
+ .irq_pending = jazz_esp_irq_pending,
+ .reset_dma = jazz_esp_reset_dma,
+ .dma_drain = jazz_esp_dma_drain,
+ .dma_invalidate = jazz_esp_dma_invalidate,
+ .send_dma_cmd = jazz_esp_send_dma_cmd,
+ .dma_error = jazz_esp_dma_error,
+};
+
+static int esp_jazz_probe(struct platform_device *dev)
+{
+ struct scsi_host_template *tpnt = &scsi_esp_template;
+ struct Scsi_Host *host;
+ struct esp *esp;
+ struct resource *res;
+ int err;
+
+ host = scsi_host_alloc(tpnt, sizeof(struct esp));
+
+ err = -ENOMEM;
+ if (!host)
+ goto fail;
+
+ host->max_id = 8;
+ esp = shost_priv(host);
+
+ esp->host = host;
+ esp->dev = dev;
+ esp->ops = &jazz_esp_ops;
+
+ res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!res)
+ goto fail_unlink;
+
+ esp->regs = (void __iomem *)res->start;
+ if (!esp->regs)
+ goto fail_unlink;
+
+ res = platform_get_resource(dev, IORESOURCE_MEM, 1);
+ if (!res)
+ goto fail_unlink;
+
+ esp->dma_regs = (void __iomem *)res->start;
+
+ esp->command_block = dma_alloc_coherent(esp->dev, 16,
+ &esp->command_block_dma,
+ GFP_KERNEL);
+ if (!esp->command_block)
+ goto fail_unmap_regs;
+
+ host->irq = platform_get_irq(dev, 0);
+ err = request_irq(host->irq, scsi_esp_intr, IRQF_SHARED, "ESP", esp);
+ if (err < 0)
+ goto fail_unmap_command_block;
+
+ esp->scsi_id = 7;
+ esp->host->this_id = esp->scsi_id;
+ esp->scsi_id_mask = (1 << esp->scsi_id);
+ esp->cfreq = 40000000;
+
+ dev_set_drvdata(&dev->dev, esp);
+
+ err = scsi_esp_register(esp, &dev->dev);
+ if (err)
+ goto fail_free_irq;
+
+ return 0;
+
+fail_free_irq:
+ free_irq(host->irq, esp);
+fail_unmap_command_block:
+ dma_free_coherent(esp->dev, 16,
+ esp->command_block,
+ esp->command_block_dma);
+fail_unmap_regs:
+fail_unlink:
+ scsi_host_put(host);
+fail:
+ return err;
+}
+
+static int esp_jazz_remove(struct platform_device *dev)
+{
+ struct esp *esp = dev_get_drvdata(&dev->dev);
+ unsigned int irq = esp->host->irq;
+
+ scsi_esp_unregister(esp);
+
+ free_irq(irq, esp);
+ dma_free_coherent(esp->dev, 16,
+ esp->command_block,
+ esp->command_block_dma);
+
+ scsi_host_put(esp->host);
+
+ return 0;
+}
+
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:jazz_esp");
+
+static struct platform_driver esp_jazz_driver = {
+ .probe = esp_jazz_probe,
+ .remove = esp_jazz_remove,
+ .driver = {
+ .name = "jazz_esp",
+ },
+};
+
+static int __init jazz_esp_init(void)
+{
+ return platform_driver_register(&esp_jazz_driver);
+}
+
+static void __exit jazz_esp_exit(void)
+{
+ platform_driver_unregister(&esp_jazz_driver);
+}
+
+MODULE_DESCRIPTION("JAZZ ESP SCSI driver");
+MODULE_AUTHOR("Thomas Bogendoerfer (tsbogend@alpha.franken.de)");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(jazz_esp_init);
+module_exit(jazz_esp_exit);