diff options
Diffstat (limited to 'drivers/dma/intel_mid_dma_regs.h')
| -rw-r--r-- | drivers/dma/intel_mid_dma_regs.h | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/drivers/dma/intel_mid_dma_regs.h b/drivers/dma/intel_mid_dma_regs.h deleted file mode 100644 index 17b42192ea58..000000000000 --- a/drivers/dma/intel_mid_dma_regs.h +++ /dev/null @@ -1,299 +0,0 @@ -/* - * intel_mid_dma_regs.h - Intel MID DMA Drivers - * - * Copyright (C) 2008-10 Intel Corp - * Author: Vinod Koul <vinod.koul@intel.com> - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * - */ -#ifndef __INTEL_MID_DMAC_REGS_H__ -#define __INTEL_MID_DMAC_REGS_H__ - -#include <linux/dmaengine.h> -#include <linux/dmapool.h> -#include <linux/pci_ids.h> - -#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) - -#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*/ -#define DMA_REG_SIZE 0x400 -#define DMA_CH_SIZE 0x58 - -/*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*/ -#define CFG_HIGH 0x44 /* Configuration Register high*/ - -#define STATUS_TFR 0x2E8 -#define STATUS_BLOCK 0x2F0 -#define STATUS_ERR 0x308 - -#define RAW_TFR 0x2C0 -#define RAW_BLOCK 0x2C8 -#define RAW_ERR 0x2E0 - -#define MASK_TFR 0x310 -#define MASK_BLOCK 0x318 -#define MASK_SRC_TRAN 0x320 -#define MASK_DST_TRAN 0x328 -#define MASK_ERR 0x330 - -#define CLEAR_TFR 0x338 -#define CLEAR_BLOCK 0x340 -#define CLEAR_SRC_TRAN 0x348 -#define CLEAR_DST_TRAN 0x350 -#define CLEAR_ERR 0x358 - -#define INTR_STATUS 0x360 -#define DMA_CFG 0x398 -#define DMA_CHAN_EN 0x3A0 - -/*DMA channel control registers*/ -union intel_mid_dma_ctl_lo { - struct { - u32 int_en:1; /*enable or disable interrupts*/ - /*should be 0*/ - u32 dst_tr_width:3; /*destination transfer width*/ - /*usually 32 bits = 010*/ - u32 src_tr_width:3; /*source transfer width*/ - /*usually 32 bits = 010*/ - u32 dinc:2; /*destination address inc/dec*/ - /*For mem:INC=00, Periphral NoINC=11*/ - u32 sinc:2; /*source address inc or dec, as above*/ - u32 dst_msize:3; /*destination burst transaction length*/ - /*always = 16 ie 011*/ - u32 src_msize:3; /*source burst transaction length*/ - /*always = 16 ie 011*/ - u32 reser1:3; - u32 tt_fc:3; /*transfer type and flow controller*/ - /*M-M = 000 - P-M = 010 - M-P = 001*/ - u32 dms:2; /*destination master select = 0*/ - u32 sms:2; /*source master select = 0*/ - u32 llp_dst_en:1; /*enable/disable destination LLP = 0*/ - u32 llp_src_en:1; /*enable/disable source LLP = 0*/ - u32 reser2:3; - } ctlx; - u32 ctl_lo; -}; - -union intel_mid_dma_ctl_hi { - struct { - u32 block_ts:12; /*block transfer size*/ - u32 done:1; /*Done - updated by DMAC*/ - u32 reser:19; /*configured by DMAC*/ - } ctlx; - u32 ctl_hi; - -}; - -/*DMA channel configuration registers*/ -union intel_mid_dma_cfg_lo { - struct { - u32 reser1:5; - u32 ch_prior:3; /*channel priority = 0*/ - u32 ch_susp:1; /*channel suspend = 0*/ - u32 fifo_empty:1; /*FIFO empty or not R bit = 0*/ - u32 hs_sel_dst:1; /*select HW/SW destn handshaking*/ - /*HW = 0, SW = 1*/ - u32 hs_sel_src:1; /*select HW/SW src handshaking*/ - u32 reser2:6; - u32 dst_hs_pol:1; /*dest HS interface polarity*/ - u32 src_hs_pol:1; /*src HS interface polarity*/ - u32 max_abrst:10; /*max AMBA burst len = 0 (no sw limit*/ - u32 reload_src:1; /*auto reload src addr =1 if src is P*/ - u32 reload_dst:1; /*AR destn addr =1 if dstn is P*/ - } cfgx; - u32 cfg_lo; -}; - -union intel_mid_dma_cfg_hi { - struct { - u32 fcmode:1; /*flow control mode = 1*/ - u32 fifo_mode:1; /*FIFO mode select = 1*/ - u32 protctl:3; /*protection control = 0*/ - u32 rsvd:2; - u32 src_per:4; /*src hw HS interface*/ - u32 dst_per:4; /*dstn hw HS interface*/ - u32 reser2:17; - } cfgx; - u32 cfg_hi; -}; - - -/** - * struct intel_mid_dma_chan - internal mid representation of a DMA channel - * @chan: dma_chan strcture represetation for mid chan - * @ch_regs: MMIO register space pointer to channel register - * @dma_base: MMIO register space DMA engine base pointer - * @ch_id: DMA channel id - * @lock: channel spinlock - * @active_list: current active descriptors - * @queue: current queued up descriptors - * @free_list: current free descriptors - * @slave: dma slave structure - * @descs_allocated: total number of descriptors allocated - * @dma: dma device structure 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 received - * @raw_block: raw block interrupt received - */ -struct intel_mid_dma_chan { - struct dma_chan chan; - void __iomem *ch_regs; - void __iomem *dma_base; - int ch_id; - spinlock_t lock; - struct list_head active_list; - struct list_head queue; - struct list_head free_list; - 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( - struct dma_chan *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 - * @dma_base: MMIO register space pointer of DMA - * @dma_pool: for allocating DMA descriptors - * @common: embedded struct dma_device - * @tasklet: dma tasklet for processing interrupts - * @ch: per channel data - * @pci_id: DMA device PCI ID - * @intr_mask: Interrupt mask to be used - * @mask_reg: MMIO register for periphral mask - * @chan_base: Base ch index (read from driver data) - * @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; - void __iomem *dma_base; - struct pci_pool *dma_pool; - struct dma_device common; - struct tasklet_struct tasklet; - struct intel_mid_dma_chan ch[MAX_CHAN]; - unsigned int pci_id; - unsigned int intr_mask; - void __iomem *mask_reg; - int chan_base; - 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) -{ - return container_of(common, struct middma_device, common); -} - -struct intel_mid_dma_desc { - void __iomem *block; /*ch ptr*/ - struct list_head desc_node; - struct dma_async_tx_descriptor txd; - size_t len; - dma_addr_t sar; - dma_addr_t dar; - u32 cfg_hi; - 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_transfer_direction dirn; - enum dma_status status; - 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); - return (en_reg >> ch_no) & 0x1; -} - -static inline struct intel_mid_dma_desc *to_intel_mid_dma_desc - (struct dma_async_tx_descriptor *txd) -{ - 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 device *dev); - -#endif /*__INTEL_MID_DMAC_REGS_H__*/ |