1 files changed, 47 insertions, 6 deletions

diff --git a/drivers/dma/intel_mid_dma_regs.h b/drivers/dma/intel_mid_dma_regs.h
index d81aa658ab09..709fecbdde79 100644
--- a/drivers/dma/intel_mid_dma_regs.h
+++ b/drivers/dma/intel_mid_dma_regs.h
@@ -29,11 +29,12 @@
 #include <linux/dmapool.h>
 #include <linux/pci_ids.h>
 
-#define INTEL_MID_DMA_DRIVER_VERSION "1.0.5"
+#define INTEL_MID_DMA_DRIVER_VERSION "1.1.0"
 
 #define REG_BIT0                0x00000001
 #define REG_BIT8                0x00000100
-
+#define INT_MASK_WE             0x8
+#define CLEAR_DONE              0xFFFFEFFF
 #define UNMASK_INTR_REG(chan_num) \
         ((REG_BIT0 << chan_num) | (REG_BIT8 << chan_num))
 #define MASK_INTR_REG(chan_num) (REG_BIT8 << chan_num)
@@ -41,6 +42,9 @@
 #define ENABLE_CHANNEL(chan_num) \
         ((REG_BIT0 << chan_num) | (REG_BIT8 << chan_num))
 
+#define DISABLE_CHANNEL(chan_num) \
+        (REG_BIT8 << chan_num)
+
 #define DESCS_PER_CHANNEL       16
 /*DMA Registers*/
 /*registers associated with channel programming*/
@@ -50,6 +54,7 @@
 /*CH X REG = (DMA_CH_SIZE)*CH_NO + REG*/
 #define SAR                     0x00 /* Source Address Register*/
 #define DAR                     0x08 /* Destination Address Register*/
+#define LLP                     0x10 /* Linked List Pointer Register*/
 #define CTL_LOW                 0x18 /* Control Register*/
 #define CTL_HIGH                0x1C /* Control Register*/
 #define CFG_LOW                 0x40 /* Configuration Register Low*/
@@ -112,8 +117,8 @@ union intel_mid_dma_ctl_lo {
 union intel_mid_dma_ctl_hi {
         struct {
                 u32     block_ts:12;    /*block transfer size*/
-                                        /*configured by DMAC*/
-                u32     reser:20;
+                u32     done:1;         /*Done - updated by DMAC*/
+                u32     reser:19;       /*configured by DMAC*/
         } ctlx;
         u32     ctl_hi;
 
@@ -152,6 +157,7 @@ union intel_mid_dma_cfg_hi {
         u32     cfg_hi;
 };
 
+
 /**
  * struct intel_mid_dma_chan - internal mid representation of a DMA channel
  * @chan: dma_chan strcture represetation for mid chan
@@ -166,7 +172,10 @@ union intel_mid_dma_cfg_hi {
  * @slave: dma slave struture
  * @descs_allocated: total number of decsiptors allocated
  * @dma: dma device struture pointer
+ * @busy: bool representing if ch is busy (active txn) or not
  * @in_use: bool representing if ch is in use or not
+ * @raw_tfr: raw trf interrupt recieved
+ * @raw_block: raw block interrupt recieved
  */
 struct intel_mid_dma_chan {
         struct dma_chan         chan;
@@ -178,10 +187,13 @@ struct intel_mid_dma_chan {
         struct list_head        active_list;
         struct list_head        queue;
         struct list_head        free_list;
-        struct intel_mid_dma_slave      *slave;
         unsigned int            descs_allocated;
         struct middma_device    *dma;
+        bool                    busy;
         bool                    in_use;
+        u32                     raw_tfr;
+        u32                     raw_block;
+        struct intel_mid_dma_slave *mid_slave;
 };
 
 static inline struct intel_mid_dma_chan *to_intel_mid_dma_chan(
@@ -190,6 +202,10 @@ static inline struct intel_mid_dma_chan *to_intel_mid_dma_chan(
         return container_of(chan, struct intel_mid_dma_chan, chan);
 }
 
+enum intel_mid_dma_state {
+        RUNNING = 0,
+        SUSPENDED,
+};
 /**
  * struct middma_device - internal representation of a DMA device
  * @pdev: PCI device
@@ -205,6 +221,7 @@ static inline struct intel_mid_dma_chan *to_intel_mid_dma_chan(
  * @max_chan: max number of chs supported (from drv_data)
  * @block_size: Block size of DMA transfer supported (from drv_data)
  * @pimr_mask: MMIO register addr for periphral interrupt (from drv_data)
+ * @state: dma PM device state
  */
 struct middma_device {
         struct pci_dev          *pdev;
@@ -220,6 +237,7 @@ struct middma_device {
         int                     max_chan;
         int                     block_size;
         unsigned int            pimr_mask;
+        enum intel_mid_dma_state state;
 };
 
 static inline struct middma_device *to_middma_device(struct dma_device *common)
@@ -238,14 +256,27 @@ struct intel_mid_dma_desc {
         u32                             cfg_lo;
         u32                             ctl_lo;
         u32                             ctl_hi;
+        struct pci_pool                 *lli_pool;
+        struct intel_mid_dma_lli        *lli;
+        dma_addr_t                      lli_phys;
+        unsigned int                    lli_length;
+        unsigned int                    current_lli;
         dma_addr_t                      next;
         enum dma_data_direction         dirn;
         enum dma_status                 status;
-        enum intel_mid_dma_width        width; /*width of DMA txn*/
+        enum dma_slave_buswidth         width; /*width of DMA txn*/
         enum intel_mid_dma_mode         cfg_mode; /*mode configuration*/
 
 };
 
+struct intel_mid_dma_lli {
+        dma_addr_t                      sar;
+        dma_addr_t                      dar;
+        dma_addr_t                      llp;
+        u32                             ctl_lo;
+        u32                             ctl_hi;
+} __attribute__ ((packed));
+
 static inline int test_ch_en(void __iomem *dma, u32 ch_no)
 {
         u32 en_reg = ioread32(dma + DMA_CHAN_EN);
@@ -257,4 +288,14 @@ static inline struct intel_mid_dma_desc *to_intel_mid_dma_desc
 {
         return container_of(txd, struct intel_mid_dma_desc, txd);
 }
+
+static inline struct intel_mid_dma_slave *to_intel_mid_dma_slave
+                (struct dma_slave_config *slave)
+{
+        return container_of(slave, struct intel_mid_dma_slave, dma_slave);
+}
+
+
+int dma_resume(struct pci_dev *pci);
+
 #endif /*__INTEL_MID_DMAC_REGS_H__*/