| /* |
| * tiomap.c |
| * |
| * DSP-BIOS Bridge driver support functions for TI OMAP processors. |
| * |
| * Processor Manager Driver for TI OMAP3430 EVM. |
| * |
| * Copyright (C) 2005-2006 Texas Instruments, Inc. |
| * |
| * This package is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| */ |
| |
| #include <plat/dsp.h> |
| |
| #include <linux/types.h> |
| /* ----------------------------------- Host OS */ |
| #include <dspbridge/host_os.h> |
| #include <linux/mm.h> |
| #include <linux/mmzone.h> |
| |
| /* ----------------------------------- DSP/BIOS Bridge */ |
| #include <dspbridge/dbdefs.h> |
| |
| /* ----------------------------------- Trace & Debug */ |
| #include <dspbridge/dbc.h> |
| |
| /* ----------------------------------- OS Adaptation Layer */ |
| #include <dspbridge/drv.h> |
| #include <dspbridge/sync.h> |
| |
| /* ----------------------------------- Link Driver */ |
| #include <dspbridge/dspdefs.h> |
| #include <dspbridge/dspchnl.h> |
| #include <dspbridge/dspdeh.h> |
| #include <dspbridge/dspio.h> |
| #include <dspbridge/dspmsg.h> |
| #include <dspbridge/pwr.h> |
| #include <dspbridge/io_sm.h> |
| |
| /* ----------------------------------- Platform Manager */ |
| #include <dspbridge/dev.h> |
| #include <dspbridge/dspapi.h> |
| #include <dspbridge/dmm.h> |
| #include <dspbridge/wdt.h> |
| |
| /* ----------------------------------- Local */ |
| #include "_tiomap.h" |
| #include "_tiomap_pwr.h" |
| #include "tiomap_io.h" |
| #include "_deh.h" |
| |
| /* Offset in shared mem to write to in order to synchronize start with DSP */ |
| #define SHMSYNCOFFSET 4 /* GPP byte offset */ |
| |
| #define BUFFERSIZE 1024 |
| |
| #define TIHELEN_ACKTIMEOUT 10000 |
| |
| #define MMU_SECTION_ADDR_MASK 0xFFF00000 |
| #define MMU_SSECTION_ADDR_MASK 0xFF000000 |
| #define MMU_LARGE_PAGE_MASK 0xFFFF0000 |
| #define MMU_SMALL_PAGE_MASK 0xFFFFF000 |
| #define OMAP3_IVA2_BOOTADDR_MASK 0xFFFFFC00 |
| #define PAGES_II_LVL_TABLE 512 |
| #define PHYS_TO_PAGE(phys) pfn_to_page((phys) >> PAGE_SHIFT) |
| |
| /* |
| * This is a totally ugly layer violation, but needed until |
| * omap_ctrl_set_dsp_boot*() are provided. |
| */ |
| #define OMAP3_IVA2_BOOTMOD_IDLE 1 |
| #define OMAP2_CONTROL_GENERAL 0x270 |
| #define OMAP343X_CONTROL_IVA2_BOOTADDR (OMAP2_CONTROL_GENERAL + 0x0190) |
| #define OMAP343X_CONTROL_IVA2_BOOTMOD (OMAP2_CONTROL_GENERAL + 0x0194) |
| |
| #define OMAP343X_CTRL_REGADDR(reg) \ |
| OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE + (reg)) |
| |
| |
| /* Forward Declarations: */ |
| static int bridge_brd_monitor(struct bridge_dev_context *dev_ctxt); |
| static int bridge_brd_read(struct bridge_dev_context *dev_ctxt, |
| u8 *host_buff, |
| u32 dsp_addr, u32 ul_num_bytes, |
| u32 mem_type); |
| static int bridge_brd_start(struct bridge_dev_context *dev_ctxt, |
| u32 dsp_addr); |
| static int bridge_brd_status(struct bridge_dev_context *dev_ctxt, |
| int *board_state); |
| static int bridge_brd_stop(struct bridge_dev_context *dev_ctxt); |
| static int bridge_brd_write(struct bridge_dev_context *dev_ctxt, |
| u8 *host_buff, |
| u32 dsp_addr, u32 ul_num_bytes, |
| u32 mem_type); |
| static int bridge_brd_set_state(struct bridge_dev_context *dev_ctxt, |
| u32 brd_state); |
| static int bridge_brd_mem_copy(struct bridge_dev_context *dev_ctxt, |
| u32 dsp_dest_addr, u32 dsp_src_addr, |
| u32 ul_num_bytes, u32 mem_type); |
| static int bridge_brd_mem_write(struct bridge_dev_context *dev_ctxt, |
| u8 *host_buff, u32 dsp_addr, |
| u32 ul_num_bytes, u32 mem_type); |
| static int bridge_dev_create(struct bridge_dev_context |
| **dev_cntxt, |
| struct dev_object *hdev_obj, |
| struct cfg_hostres *config_param); |
| static int bridge_dev_ctrl(struct bridge_dev_context *dev_context, |
| u32 dw_cmd, void *pargs); |
| static int bridge_dev_destroy(struct bridge_dev_context *dev_ctxt); |
| bool wait_for_start(struct bridge_dev_context *dev_context, u32 dw_sync_addr); |
| |
| /* |
| * This Bridge driver's function interface table. |
| */ |
| static struct bridge_drv_interface drv_interface_fxns = { |
| /* Bridge API ver. for which this bridge driver is built. */ |
| BRD_API_MAJOR_VERSION, |
| BRD_API_MINOR_VERSION, |
| bridge_dev_create, |
| bridge_dev_destroy, |
| bridge_dev_ctrl, |
| bridge_brd_monitor, |
| bridge_brd_start, |
| bridge_brd_stop, |
| bridge_brd_status, |
| bridge_brd_read, |
| bridge_brd_write, |
| bridge_brd_set_state, |
| bridge_brd_mem_copy, |
| bridge_brd_mem_write, |
| /* The following CHNL functions are provided by chnl_io.lib: */ |
| bridge_chnl_create, |
| bridge_chnl_destroy, |
| bridge_chnl_open, |
| bridge_chnl_close, |
| bridge_chnl_add_io_req, |
| bridge_chnl_get_ioc, |
| bridge_chnl_cancel_io, |
| bridge_chnl_flush_io, |
| bridge_chnl_get_info, |
| bridge_chnl_get_mgr_info, |
| bridge_chnl_idle, |
| bridge_chnl_register_notify, |
| /* The following IO functions are provided by chnl_io.lib: */ |
| bridge_io_create, |
| bridge_io_destroy, |
| bridge_io_on_loaded, |
| bridge_io_get_proc_load, |
| /* The following msg_ctrl functions are provided by chnl_io.lib: */ |
| bridge_msg_create, |
| bridge_msg_create_queue, |
| bridge_msg_delete, |
| bridge_msg_delete_queue, |
| bridge_msg_get, |
| bridge_msg_put, |
| bridge_msg_register_notify, |
| bridge_msg_set_queue_id, |
| }; |
| |
| /* |
| * ======== bridge_drv_entry ======== |
| * purpose: |
| * Bridge Driver entry point. |
| */ |
| void bridge_drv_entry(struct bridge_drv_interface **drv_intf, |
| const char *driver_file_name) |
| { |
| |
| DBC_REQUIRE(driver_file_name != NULL); |
| |
| io_sm_init(); /* Initialization of io_sm module */ |
| |
| if (strcmp(driver_file_name, "UMA") == 0) |
| *drv_intf = &drv_interface_fxns; |
| else |
| dev_dbg(bridge, "%s Unknown Bridge file name", __func__); |
| |
| } |
| |
| /* |
| * ======== bridge_brd_monitor ======== |
| * purpose: |
| * This bridge_brd_monitor puts DSP into a Loadable state. |
| * i.e Application can load and start the device. |
| * |
| * Preconditions: |
| * Device in 'OFF' state. |
| */ |
| static int bridge_brd_monitor(struct bridge_dev_context *dev_ctxt) |
| { |
| struct bridge_dev_context *dev_context = dev_ctxt; |
| u32 temp; |
| struct omap_dsp_platform_data *pdata = |
| omap_dspbridge_dev->dev.platform_data; |
| |
| temp = (*pdata->dsp_prm_read)(OMAP3430_IVA2_MOD, OMAP2_PM_PWSTST) & |
| OMAP_POWERSTATEST_MASK; |
| if (!(temp & 0x02)) { |
| /* IVA2 is not in ON state */ |
| /* Read and set PM_PWSTCTRL_IVA2 to ON */ |
| (*pdata->dsp_prm_rmw_bits)(OMAP_POWERSTATEST_MASK, |
| PWRDM_POWER_ON, OMAP3430_IVA2_MOD, OMAP2_PM_PWSTCTRL); |
| /* Set the SW supervised state transition */ |
| (*pdata->dsp_cm_write)(OMAP34XX_CLKSTCTRL_FORCE_WAKEUP, |
| OMAP3430_IVA2_MOD, OMAP2_CM_CLKSTCTRL); |
| |
| /* Wait until the state has moved to ON */ |
| while ((*pdata->dsp_prm_read)(OMAP3430_IVA2_MOD, OMAP2_PM_PWSTST) & |
| OMAP_INTRANSITION_MASK) |
| ; |
| /* Disable Automatic transition */ |
| (*pdata->dsp_cm_write)(OMAP34XX_CLKSTCTRL_DISABLE_AUTO, |
| OMAP3430_IVA2_MOD, OMAP2_CM_CLKSTCTRL); |
| } |
| |
| dsp_clk_enable(DSP_CLK_IVA2); |
| |
| /* set the device state to IDLE */ |
| dev_context->dw_brd_state = BRD_IDLE; |
| |
| return 0; |
| } |
| |
| /* |
| * ======== bridge_brd_read ======== |
| * purpose: |
| * Reads buffers for DSP memory. |
| */ |
| static int bridge_brd_read(struct bridge_dev_context *dev_ctxt, |
| u8 *host_buff, u32 dsp_addr, |
| u32 ul_num_bytes, u32 mem_type) |
| { |
| int status = 0; |
| struct bridge_dev_context *dev_context = dev_ctxt; |
| u32 offset; |
| u32 dsp_base_addr = dev_ctxt->dw_dsp_base_addr; |
| |
| if (dsp_addr < dev_context->dw_dsp_start_add) { |
| status = -EPERM; |
| return status; |
| } |
| /* change here to account for the 3 bands of the DSP internal memory */ |
| if ((dsp_addr - dev_context->dw_dsp_start_add) < |
| dev_context->dw_internal_size) { |
| offset = dsp_addr - dev_context->dw_dsp_start_add; |
| } else { |
| status = read_ext_dsp_data(dev_context, host_buff, dsp_addr, |
| ul_num_bytes, mem_type); |
| return status; |
| } |
| /* copy the data from DSP memory, */ |
| memcpy(host_buff, (void *)(dsp_base_addr + offset), ul_num_bytes); |
| return status; |
| } |
| |
| /* |
| * ======== bridge_brd_set_state ======== |
| * purpose: |
| * This routine updates the Board status. |
| */ |
| static int bridge_brd_set_state(struct bridge_dev_context *dev_ctxt, |
| u32 brd_state) |
| { |
| int status = 0; |
| struct bridge_dev_context *dev_context = dev_ctxt; |
| |
| dev_context->dw_brd_state = brd_state; |
| return status; |
| } |
| |
| /* |
| * ======== bridge_brd_start ======== |
| * purpose: |
| * Initializes DSP MMU and Starts DSP. |
| * |
| * Preconditions: |
| * a) DSP domain is 'ACTIVE'. |
| * b) DSP_RST1 is asserted. |
| * b) DSP_RST2 is released. |
| */ |
| static int bridge_brd_start(struct bridge_dev_context *dev_ctxt, |
| u32 dsp_addr) |
| { |
| int status = 0; |
| struct bridge_dev_context *dev_context = dev_ctxt; |
| struct iommu *mmu = NULL; |
| struct shm_segs *sm_sg; |
| int l4_i = 0, tlb_i = 0; |
| u32 sg0_da = 0, sg1_da = 0; |
| struct bridge_ioctl_extproc *tlb = dev_context->atlb_entry; |
| u32 dw_sync_addr = 0; |
| u32 ul_shm_base; /* Gpp Phys SM base addr(byte) */ |
| u32 ul_shm_base_virt; /* Dsp Virt SM base addr */ |
| u32 ul_tlb_base_virt; /* Base of MMU TLB entry */ |
| /* Offset of shm_base_virt from tlb_base_virt */ |
| u32 ul_shm_offset_virt; |
| struct cfg_hostres *resources = NULL; |
| u32 temp; |
| u32 ul_dsp_clk_rate; |
| u32 ul_dsp_clk_addr; |
| u32 ul_bios_gp_timer; |
| u32 clk_cmd; |
| struct io_mgr *hio_mgr; |
| u32 ul_load_monitor_timer; |
| struct omap_dsp_platform_data *pdata = |
| omap_dspbridge_dev->dev.platform_data; |
| |
| /* The device context contains all the mmu setup info from when the |
| * last dsp base image was loaded. The first entry is always |
| * SHMMEM base. */ |
| /* Get SHM_BEG - convert to byte address */ |
| (void)dev_get_symbol(dev_context->hdev_obj, SHMBASENAME, |
| &ul_shm_base_virt); |
| ul_shm_base_virt *= DSPWORDSIZE; |
| DBC_ASSERT(ul_shm_base_virt != 0); |
| /* DSP Virtual address */ |
| ul_tlb_base_virt = dev_context->sh_s.seg0_da; |
| DBC_ASSERT(ul_tlb_base_virt <= ul_shm_base_virt); |
| ul_shm_offset_virt = |
| ul_shm_base_virt - (ul_tlb_base_virt * DSPWORDSIZE); |
| /* Kernel logical address */ |
| ul_shm_base = dev_context->sh_s.seg0_va + ul_shm_offset_virt; |
| |
| DBC_ASSERT(ul_shm_base != 0); |
| /* 2nd wd is used as sync field */ |
| dw_sync_addr = ul_shm_base + SHMSYNCOFFSET; |
| /* Write a signature into the shm base + offset; this will |
| * get cleared when the DSP program starts. */ |
| if ((ul_shm_base_virt == 0) || (ul_shm_base == 0)) { |
| pr_err("%s: Illegal SM base\n", __func__); |
| status = -EPERM; |
| } else |
| __raw_writel(0xffffffff, dw_sync_addr); |
| |
| if (!status) { |
| resources = dev_context->resources; |
| if (!resources) |
| status = -EPERM; |
| |
| /* Assert RST1 i.e only the RST only for DSP megacell */ |
| if (!status) { |
| (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST1_IVA2_MASK, |
| OMAP3430_RST1_IVA2_MASK, OMAP3430_IVA2_MOD, |
| OMAP2_RM_RSTCTRL); |
| /* Mask address with 1K for compatibility */ |
| __raw_writel(dsp_addr & OMAP3_IVA2_BOOTADDR_MASK, |
| OMAP343X_CTRL_REGADDR( |
| OMAP343X_CONTROL_IVA2_BOOTADDR)); |
| /* |
| * Set bootmode to self loop if dsp_debug flag is true |
| */ |
| __raw_writel((dsp_debug) ? OMAP3_IVA2_BOOTMOD_IDLE : 0, |
| OMAP343X_CTRL_REGADDR( |
| OMAP343X_CONTROL_IVA2_BOOTMOD)); |
| } |
| } |
| |
| if (!status) { |
| (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST2_IVA2_MASK, 0, |
| OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); |
| mmu = dev_context->dsp_mmu; |
| if (mmu) |
| iommu_put(mmu); |
| mmu = iommu_get("iva2"); |
| if (IS_ERR(mmu)) { |
| dev_err(bridge, "iommu_get failed!\n"); |
| dev_context->dsp_mmu = NULL; |
| status = (int)mmu; |
| } |
| } |
| if (!status) { |
| dev_context->dsp_mmu = mmu; |
| mmu->isr = mmu_fault_isr; |
| sm_sg = &dev_context->sh_s; |
| sg0_da = iommu_kmap(mmu, sm_sg->seg0_da, sm_sg->seg0_pa, |
| sm_sg->seg0_size, IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32); |
| if (IS_ERR_VALUE(sg0_da)) { |
| status = (int)sg0_da; |
| sg0_da = 0; |
| } |
| } |
| if (!status) { |
| sg1_da = iommu_kmap(mmu, sm_sg->seg1_da, sm_sg->seg1_pa, |
| sm_sg->seg1_size, IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32); |
| if (IS_ERR_VALUE(sg1_da)) { |
| status = (int)sg1_da; |
| sg1_da = 0; |
| } |
| } |
| if (!status) { |
| u32 da; |
| for (tlb_i = 0; tlb_i < BRDIOCTL_NUMOFMMUTLB; tlb_i++) { |
| if (!tlb[tlb_i].ul_gpp_pa) |
| continue; |
| |
| dev_dbg(bridge, "IOMMU %d GppPa: 0x%x DspVa 0x%x Size" |
| " 0x%x\n", tlb_i, tlb[tlb_i].ul_gpp_pa, |
| tlb[tlb_i].ul_dsp_va, tlb[tlb_i].ul_size); |
| |
| da = iommu_kmap(mmu, tlb[tlb_i].ul_dsp_va, |
| tlb[tlb_i].ul_gpp_pa, PAGE_SIZE, |
| IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32); |
| if (IS_ERR_VALUE(da)) { |
| status = (int)da; |
| break; |
| } |
| } |
| } |
| if (!status) { |
| u32 da; |
| l4_i = 0; |
| while (l4_peripheral_table[l4_i].phys_addr) { |
| da = iommu_kmap(mmu, l4_peripheral_table[l4_i]. |
| dsp_virt_addr, l4_peripheral_table[l4_i]. |
| phys_addr, PAGE_SIZE, |
| IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32); |
| if (IS_ERR_VALUE(da)) { |
| status = (int)da; |
| break; |
| } |
| l4_i++; |
| } |
| } |
| |
| /* Lock the above TLB entries and get the BIOS and load monitor timer |
| * information */ |
| if (!status) { |
| /* Enable the BIOS clock */ |
| (void)dev_get_symbol(dev_context->hdev_obj, |
| BRIDGEINIT_BIOSGPTIMER, &ul_bios_gp_timer); |
| (void)dev_get_symbol(dev_context->hdev_obj, |
| BRIDGEINIT_LOADMON_GPTIMER, |
| &ul_load_monitor_timer); |
| |
| if (ul_load_monitor_timer != 0xFFFF) { |
| clk_cmd = (BPWR_ENABLE_CLOCK << MBX_PM_CLK_CMDSHIFT) | |
| ul_load_monitor_timer; |
| dsp_peripheral_clk_ctrl(dev_context, &clk_cmd); |
| } else { |
| dev_dbg(bridge, "Not able to get the symbol for Load " |
| "Monitor Timer\n"); |
| } |
| |
| if (ul_bios_gp_timer != 0xFFFF) { |
| clk_cmd = (BPWR_ENABLE_CLOCK << MBX_PM_CLK_CMDSHIFT) | |
| ul_bios_gp_timer; |
| dsp_peripheral_clk_ctrl(dev_context, &clk_cmd); |
| } else { |
| dev_dbg(bridge, |
| "Not able to get the symbol for BIOS Timer\n"); |
| } |
| |
| /* Set the DSP clock rate */ |
| (void)dev_get_symbol(dev_context->hdev_obj, |
| "_BRIDGEINIT_DSP_FREQ", &ul_dsp_clk_addr); |
| /*Set Autoidle Mode for IVA2 PLL */ |
| (*pdata->dsp_cm_write)(1 << OMAP3430_AUTO_IVA2_DPLL_SHIFT, |
| OMAP3430_IVA2_MOD, OMAP3430_CM_AUTOIDLE_PLL); |
| |
| if ((unsigned int *)ul_dsp_clk_addr != NULL) { |
| /* Get the clock rate */ |
| ul_dsp_clk_rate = dsp_clk_get_iva2_rate(); |
| dev_dbg(bridge, "%s: DSP clock rate (KHZ): 0x%x \n", |
| __func__, ul_dsp_clk_rate); |
| (void)bridge_brd_write(dev_context, |
| (u8 *) &ul_dsp_clk_rate, |
| ul_dsp_clk_addr, sizeof(u32), 0); |
| } |
| /* |
| * Enable Mailbox events and also drain any pending |
| * stale messages. |
| */ |
| dev_context->mbox = omap_mbox_get("dsp"); |
| if (IS_ERR(dev_context->mbox)) { |
| dev_context->mbox = NULL; |
| pr_err("%s: Failed to get dsp mailbox handle\n", |
| __func__); |
| status = -EPERM; |
| } |
| |
| } |
| if (!status) { |
| dev_context->mbox->rxq->callback = (int (*)(void *))io_mbox_msg; |
| |
| /*PM_IVA2GRPSEL_PER = 0xC0;*/ |
| temp = readl(resources->dw_per_pm_base + 0xA8); |
| temp = (temp & 0xFFFFFF30) | 0xC0; |
| writel(temp, resources->dw_per_pm_base + 0xA8); |
| |
| /*PM_MPUGRPSEL_PER &= 0xFFFFFF3F; */ |
| temp = readl(resources->dw_per_pm_base + 0xA4); |
| temp = (temp & 0xFFFFFF3F); |
| writel(temp, resources->dw_per_pm_base + 0xA4); |
| /*CM_SLEEPDEP_PER |= 0x04; */ |
| temp = readl(resources->dw_per_base + 0x44); |
| temp = (temp & 0xFFFFFFFB) | 0x04; |
| writel(temp, resources->dw_per_base + 0x44); |
| |
| /*CM_CLKSTCTRL_IVA2 = 0x00000003 -To Allow automatic transitions */ |
| (*pdata->dsp_cm_write)(OMAP34XX_CLKSTCTRL_ENABLE_AUTO, |
| OMAP3430_IVA2_MOD, OMAP2_CM_CLKSTCTRL); |
| |
| /* Let DSP go */ |
| dev_dbg(bridge, "%s Unreset\n", __func__); |
| /* release the RST1, DSP starts executing now .. */ |
| (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST1_IVA2_MASK, 0, |
| OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); |
| |
| dev_dbg(bridge, "Waiting for Sync @ 0x%x\n", dw_sync_addr); |
| dev_dbg(bridge, "DSP c_int00 Address = 0x%x\n", dsp_addr); |
| if (dsp_debug) |
| while (__raw_readw(dw_sync_addr)) |
| ;; |
| |
| /* Wait for DSP to clear word in shared memory */ |
| /* Read the Location */ |
| if (!wait_for_start(dev_context, dw_sync_addr)) |
| status = -ETIMEDOUT; |
| |
| /* Start wdt */ |
| dsp_wdt_sm_set((void *)ul_shm_base); |
| dsp_wdt_enable(true); |
| |
| status = dev_get_io_mgr(dev_context->hdev_obj, &hio_mgr); |
| if (hio_mgr) { |
| io_sh_msetting(hio_mgr, SHM_OPPINFO, NULL); |
| /* Write the synchronization bit to indicate the |
| * completion of OPP table update to DSP |
| */ |
| __raw_writel(0XCAFECAFE, dw_sync_addr); |
| |
| /* update board state */ |
| dev_context->dw_brd_state = BRD_RUNNING; |
| return 0; |
| } else { |
| dev_context->dw_brd_state = BRD_UNKNOWN; |
| } |
| } |
| |
| while (tlb_i--) { |
| if (!tlb[tlb_i].ul_gpp_pa) |
| continue; |
| iommu_kunmap(mmu, tlb[tlb_i].ul_gpp_va); |
| } |
| while (l4_i--) |
| iommu_kunmap(mmu, l4_peripheral_table[l4_i].dsp_virt_addr); |
| if (sg0_da) |
| iommu_kunmap(mmu, sg0_da); |
| if (sg1_da) |
| iommu_kunmap(mmu, sg1_da); |
| return status; |
| } |
| |
| /* |
| * ======== bridge_brd_stop ======== |
| * purpose: |
| * Puts DSP in self loop. |
| * |
| * Preconditions : |
| * a) None |
| */ |
| static int bridge_brd_stop(struct bridge_dev_context *dev_ctxt) |
| { |
| int status = 0; |
| struct bridge_dev_context *dev_context = dev_ctxt; |
| u32 dsp_pwr_state; |
| int i; |
| struct bridge_ioctl_extproc *tlb = dev_context->atlb_entry; |
| struct omap_dsp_platform_data *pdata = |
| omap_dspbridge_dev->dev.platform_data; |
| |
| if (dev_context->dw_brd_state == BRD_STOPPED) |
| return status; |
| |
| /* as per TRM, it is advised to first drive the IVA2 to 'Standby' mode, |
| * before turning off the clocks.. This is to ensure that there are no |
| * pending L3 or other transactons from IVA2 */ |
| dsp_pwr_state = (*pdata->dsp_prm_read)(OMAP3430_IVA2_MOD, OMAP2_PM_PWSTST) & |
| OMAP_POWERSTATEST_MASK; |
| if (dsp_pwr_state != PWRDM_POWER_OFF) { |
| (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST2_IVA2_MASK, 0, |
| OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); |
| sm_interrupt_dsp(dev_context, MBX_PM_DSPIDLE); |
| mdelay(10); |
| |
| /* IVA2 is not in OFF state */ |
| /* Set PM_PWSTCTRL_IVA2 to OFF */ |
| (*pdata->dsp_prm_rmw_bits)(OMAP_POWERSTATEST_MASK, |
| PWRDM_POWER_OFF, OMAP3430_IVA2_MOD, OMAP2_PM_PWSTCTRL); |
| /* Set the SW supervised state transition for Sleep */ |
| (*pdata->dsp_cm_write)(OMAP34XX_CLKSTCTRL_FORCE_SLEEP, |
| OMAP3430_IVA2_MOD, OMAP2_CM_CLKSTCTRL); |
| } |
| udelay(10); |
| /* Release the Ext Base virtual Address as the next DSP Program |
| * may have a different load address */ |
| if (dev_context->dw_dsp_ext_base_addr) |
| dev_context->dw_dsp_ext_base_addr = 0; |
| |
| dev_context->dw_brd_state = BRD_STOPPED; /* update board state */ |
| |
| dsp_wdt_enable(false); |
| |
| /* Reset DSP */ |
| (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST1_IVA2_MASK, |
| OMAP3430_RST1_IVA2_MASK, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); |
| |
| /* Disable the mailbox interrupts */ |
| if (dev_context->mbox) { |
| omap_mbox_disable_irq(dev_context->mbox, IRQ_RX); |
| omap_mbox_put(dev_context->mbox); |
| dev_context->mbox = NULL; |
| } |
| if (dev_context->dsp_mmu) { |
| pr_err("Proc stop mmu if statement\n"); |
| for (i = 0; i < BRDIOCTL_NUMOFMMUTLB; i++) { |
| if (!tlb[i].ul_gpp_pa) |
| continue; |
| iommu_kunmap(dev_context->dsp_mmu, tlb[i].ul_gpp_va); |
| } |
| i = 0; |
| while (l4_peripheral_table[i].phys_addr) { |
| iommu_kunmap(dev_context->dsp_mmu, |
| l4_peripheral_table[i].dsp_virt_addr); |
| i++; |
| } |
| iommu_kunmap(dev_context->dsp_mmu, dev_context->sh_s.seg0_da); |
| iommu_kunmap(dev_context->dsp_mmu, dev_context->sh_s.seg1_da); |
| iommu_put(dev_context->dsp_mmu); |
| dev_context->dsp_mmu = NULL; |
| } |
| /* Reset IVA IOMMU*/ |
| (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST2_IVA2_MASK, |
| OMAP3430_RST2_IVA2_MASK, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); |
| |
| dsp_clock_disable_all(dev_context->dsp_per_clks); |
| dsp_clk_disable(DSP_CLK_IVA2); |
| |
| return status; |
| } |
| |
| /* |
| * ======== bridge_brd_status ======== |
| * Returns the board status. |
| */ |
| static int bridge_brd_status(struct bridge_dev_context *dev_ctxt, |
| int *board_state) |
| { |
| struct bridge_dev_context *dev_context = dev_ctxt; |
| *board_state = dev_context->dw_brd_state; |
| return 0; |
| } |
| |
| /* |
| * ======== bridge_brd_write ======== |
| * Copies the buffers to DSP internal or external memory. |
| */ |
| static int bridge_brd_write(struct bridge_dev_context *dev_ctxt, |
| u8 *host_buff, u32 dsp_addr, |
| u32 ul_num_bytes, u32 mem_type) |
| { |
| int status = 0; |
| struct bridge_dev_context *dev_context = dev_ctxt; |
| |
| if (dsp_addr < dev_context->dw_dsp_start_add) { |
| status = -EPERM; |
| return status; |
| } |
| if ((dsp_addr - dev_context->dw_dsp_start_add) < |
| dev_context->dw_internal_size) { |
| status = write_dsp_data(dev_ctxt, host_buff, dsp_addr, |
| ul_num_bytes, mem_type); |
| } else { |
| status = write_ext_dsp_data(dev_context, host_buff, dsp_addr, |
| ul_num_bytes, mem_type, false); |
| } |
| |
| return status; |
| } |
| |
| /* |
| * ======== bridge_dev_create ======== |
| * Creates a driver object. Puts DSP in self loop. |
| */ |
| static int bridge_dev_create(struct bridge_dev_context |
| **dev_cntxt, |
| struct dev_object *hdev_obj, |
| struct cfg_hostres *config_param) |
| { |
| int status = 0; |
| struct bridge_dev_context *dev_context = NULL; |
| s32 entry_ndx; |
| struct cfg_hostres *resources = config_param; |
| struct drv_data *drv_datap = dev_get_drvdata(bridge); |
| |
| /* Allocate and initialize a data structure to contain the bridge driver |
| * state, which becomes the context for later calls into this driver */ |
| dev_context = kzalloc(sizeof(struct bridge_dev_context), GFP_KERNEL); |
| if (!dev_context) { |
| status = -ENOMEM; |
| goto func_end; |
| } |
| |
| dev_context->dw_dsp_start_add = (u32) OMAP_GEM_BASE; |
| dev_context->dw_self_loop = (u32) NULL; |
| dev_context->dsp_per_clks = 0; |
| dev_context->dw_internal_size = OMAP_DSP_SIZE; |
| /* Clear dev context MMU table entries. |
| * These get set on bridge_io_on_loaded() call after program loaded. */ |
| for (entry_ndx = 0; entry_ndx < BRDIOCTL_NUMOFMMUTLB; entry_ndx++) { |
| dev_context->atlb_entry[entry_ndx].ul_gpp_pa = |
| dev_context->atlb_entry[entry_ndx].ul_dsp_va = 0; |
| } |
| dev_context->dw_dsp_base_addr = (u32) MEM_LINEAR_ADDRESS((void *) |
| (config_param-> |
| dw_mem_base |
| [3]), |
| config_param-> |
| dw_mem_length |
| [3]); |
| if (!dev_context->dw_dsp_base_addr) |
| status = -EPERM; |
| |
| if (!status) { |
| dev_context->tc_word_swap_on = drv_datap->tc_wordswapon; |
| dev_context->hdev_obj = hdev_obj; |
| /* Store current board state. */ |
| dev_context->dw_brd_state = BRD_UNKNOWN; |
| dev_context->resources = resources; |
| dsp_clk_enable(DSP_CLK_IVA2); |
| bridge_brd_stop(dev_context); |
| /* Return ptr to our device state to the DSP API for storage */ |
| *dev_cntxt = dev_context; |
| } else { |
| kfree(dev_context); |
| } |
| func_end: |
| return status; |
| } |
| |
| /* |
| * ======== bridge_dev_ctrl ======== |
| * Receives device specific commands. |
| */ |
| static int bridge_dev_ctrl(struct bridge_dev_context *dev_context, |
| u32 dw_cmd, void *pargs) |
| { |
| int status = 0; |
| struct bridge_ioctl_extproc *pa_ext_proc = |
| (struct bridge_ioctl_extproc *)pargs; |
| s32 ndx; |
| |
| switch (dw_cmd) { |
| case BRDIOCTL_CHNLREAD: |
| break; |
| case BRDIOCTL_CHNLWRITE: |
| break; |
| case BRDIOCTL_SETMMUCONFIG: |
| /* store away dsp-mmu setup values for later use */ |
| for (ndx = 0; ndx < BRDIOCTL_NUMOFMMUTLB; ndx++, pa_ext_proc++) |
| dev_context->atlb_entry[ndx] = *pa_ext_proc; |
| break; |
| case BRDIOCTL_DEEPSLEEP: |
| case BRDIOCTL_EMERGENCYSLEEP: |
| /* Currently only DSP Idle is supported Need to update for |
| * later releases */ |
| status = sleep_dsp(dev_context, PWR_DEEPSLEEP, pargs); |
| break; |
| case BRDIOCTL_WAKEUP: |
| status = wake_dsp(dev_context, pargs); |
| break; |
| case BRDIOCTL_CLK_CTRL: |
| status = 0; |
| /* Looking For Baseport Fix for Clocks */ |
| status = dsp_peripheral_clk_ctrl(dev_context, pargs); |
| break; |
| case BRDIOCTL_PWR_HIBERNATE: |
| status = handle_hibernation_from_dsp(dev_context); |
| break; |
| case BRDIOCTL_PRESCALE_NOTIFY: |
| status = pre_scale_dsp(dev_context, pargs); |
| break; |
| case BRDIOCTL_POSTSCALE_NOTIFY: |
| status = post_scale_dsp(dev_context, pargs); |
| break; |
| case BRDIOCTL_CONSTRAINT_REQUEST: |
| status = handle_constraints_set(dev_context, pargs); |
| break; |
| default: |
| status = -EPERM; |
| break; |
| } |
| return status; |
| } |
| |
| /* |
| * ======== bridge_dev_destroy ======== |
| * Destroys the driver object. |
| */ |
| static int bridge_dev_destroy(struct bridge_dev_context *dev_ctxt) |
| { |
| int status = 0; |
| struct bridge_dev_context *dev_context = (struct bridge_dev_context *) |
| dev_ctxt; |
| struct cfg_hostres *host_res; |
| u32 shm_size; |
| struct drv_data *drv_datap = dev_get_drvdata(bridge); |
| |
| /* It should never happen */ |
| if (!dev_ctxt) |
| return -EFAULT; |
| |
| /* first put the device to stop state */ |
| bridge_brd_stop(dev_context); |
| |
| if (dev_context->resources) { |
| host_res = dev_context->resources; |
| shm_size = drv_datap->shm_size; |
| if (shm_size >= 0x10000) { |
| if ((host_res->dw_mem_base[1]) && |
| (host_res->dw_mem_phys[1])) { |
| mem_free_phys_mem((void *) |
| host_res->dw_mem_base |
| [1], |
| host_res->dw_mem_phys |
| [1], shm_size); |
| } |
| } else { |
| dev_dbg(bridge, "%s: Error getting shm size " |
| "from registry: %x. Not calling " |
| "mem_free_phys_mem\n", __func__, |
| status); |
| } |
| host_res->dw_mem_base[1] = 0; |
| host_res->dw_mem_phys[1] = 0; |
| |
| if (host_res->dw_mem_base[0]) |
| iounmap((void *)host_res->dw_mem_base[0]); |
| if (host_res->dw_mem_base[2]) |
| iounmap((void *)host_res->dw_mem_base[2]); |
| if (host_res->dw_mem_base[3]) |
| iounmap((void *)host_res->dw_mem_base[3]); |
| if (host_res->dw_mem_base[4]) |
| iounmap((void *)host_res->dw_mem_base[4]); |
| if (host_res->dw_dmmu_base) |
| iounmap(host_res->dw_dmmu_base); |
| if (host_res->dw_per_base) |
| iounmap(host_res->dw_per_base); |
| if (host_res->dw_per_pm_base) |
| iounmap((void *)host_res->dw_per_pm_base); |
| if (host_res->dw_core_pm_base) |
| iounmap((void *)host_res->dw_core_pm_base); |
| if (host_res->dw_sys_ctrl_base) |
| iounmap(host_res->dw_sys_ctrl_base); |
| |
| host_res->dw_mem_base[0] = (u32) NULL; |
| host_res->dw_mem_base[2] = (u32) NULL; |
| host_res->dw_mem_base[3] = (u32) NULL; |
| host_res->dw_mem_base[4] = (u32) NULL; |
| host_res->dw_dmmu_base = NULL; |
| host_res->dw_sys_ctrl_base = NULL; |
| |
| kfree(host_res); |
| } |
| |
| /* Free the driver's device context: */ |
| kfree(drv_datap->base_img); |
| kfree(drv_datap); |
| dev_set_drvdata(bridge, NULL); |
| kfree((void *)dev_ctxt); |
| return status; |
| } |
| |
| static int bridge_brd_mem_copy(struct bridge_dev_context *dev_ctxt, |
| u32 dsp_dest_addr, u32 dsp_src_addr, |
| u32 ul_num_bytes, u32 mem_type) |
| { |
| int status = 0; |
| u32 src_addr = dsp_src_addr; |
| u32 dest_addr = dsp_dest_addr; |
| u32 copy_bytes = 0; |
| u32 total_bytes = ul_num_bytes; |
| u8 host_buf[BUFFERSIZE]; |
| struct bridge_dev_context *dev_context = dev_ctxt; |
| while (total_bytes > 0 && !status) { |
| copy_bytes = |
| total_bytes > BUFFERSIZE ? BUFFERSIZE : total_bytes; |
| /* Read from External memory */ |
| status = read_ext_dsp_data(dev_ctxt, host_buf, src_addr, |
| copy_bytes, mem_type); |
| if (!status) { |
| if (dest_addr < (dev_context->dw_dsp_start_add + |
| dev_context->dw_internal_size)) { |
| /* Write to Internal memory */ |
| status = write_dsp_data(dev_ctxt, host_buf, |
| dest_addr, copy_bytes, |
| mem_type); |
| } else { |
| /* Write to External memory */ |
| status = |
| write_ext_dsp_data(dev_ctxt, host_buf, |
| dest_addr, copy_bytes, |
| mem_type, false); |
| } |
| } |
| total_bytes -= copy_bytes; |
| src_addr += copy_bytes; |
| dest_addr += copy_bytes; |
| } |
| return status; |
| } |
| |
| /* Mem Write does not halt the DSP to write unlike bridge_brd_write */ |
| static int bridge_brd_mem_write(struct bridge_dev_context *dev_ctxt, |
| u8 *host_buff, u32 dsp_addr, |
| u32 ul_num_bytes, u32 mem_type) |
| { |
| int status = 0; |
| struct bridge_dev_context *dev_context = dev_ctxt; |
| u32 ul_remain_bytes = 0; |
| u32 ul_bytes = 0; |
| ul_remain_bytes = ul_num_bytes; |
| while (ul_remain_bytes > 0 && !status) { |
| ul_bytes = |
| ul_remain_bytes > BUFFERSIZE ? BUFFERSIZE : ul_remain_bytes; |
| if (dsp_addr < (dev_context->dw_dsp_start_add + |
| dev_context->dw_internal_size)) { |
| status = |
| write_dsp_data(dev_ctxt, host_buff, dsp_addr, |
| ul_bytes, mem_type); |
| } else { |
| status = write_ext_dsp_data(dev_ctxt, host_buff, |
| dsp_addr, ul_bytes, |
| mem_type, true); |
| } |
| ul_remain_bytes -= ul_bytes; |
| dsp_addr += ul_bytes; |
| host_buff = host_buff + ul_bytes; |
| } |
| return status; |
| } |
| |
| /* |
| * ======== user_va2_pa ======== |
| * Purpose: |
| * This function walks through the page tables to convert a userland |
| * virtual address to physical address |
| */ |
| static u32 user_va2_pa(struct mm_struct *mm, u32 address) |
| { |
| pgd_t *pgd; |
| pmd_t *pmd; |
| pte_t *ptep, pte; |
| |
| pgd = pgd_offset(mm, address); |
| if (!(pgd_none(*pgd) || pgd_bad(*pgd))) { |
| pmd = pmd_offset(pgd, address); |
| if (!(pmd_none(*pmd) || pmd_bad(*pmd))) { |
| ptep = pte_offset_map(pmd, address); |
| if (ptep) { |
| pte = *ptep; |
| if (pte_present(pte)) |
| return pte & PAGE_MASK; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * get_io_pages() - pin and get pages of io user's buffer. |
| * @mm: mm_struct Pointer of the process. |
| * @uva: Virtual user space address. |
| * @pages Pages to be pined. |
| * @usr_pgs struct page array pointer where the user pages will be stored |
| * |
| */ |
| static int get_io_pages(struct mm_struct *mm, u32 uva, unsigned pages, |
| struct page **usr_pgs) |
| { |
| u32 pa; |
| int i; |
| struct page *pg; |
| |
| for (i = 0; i < pages; i++) { |
| pa = user_va2_pa(mm, uva); |
| |
| if (!pfn_valid(__phys_to_pfn(pa))) |
| break; |
| |
| pg = PHYS_TO_PAGE(pa); |
| usr_pgs[i] = pg; |
| get_page(pg); |
| } |
| return i; |
| } |
| |
| /** |
| * user_to_dsp_map() - maps user to dsp virtual address |
| * @mmu: Pointer to iommu handle. |
| * @uva: Virtual user space address. |
| * @da DSP address |
| * @size Buffer size to map. |
| * @usr_pgs struct page array pointer where the user pages will be stored |
| * |
| * This function maps a user space buffer into DSP virtual address. |
| * |
| */ |
| u32 user_to_dsp_map(struct iommu *mmu, u32 uva, u32 da, u32 size, |
| struct page **usr_pgs) |
| { |
| int res, w; |
| unsigned pages, i; |
| struct vm_area_struct *vma; |
| struct mm_struct *mm = current->mm; |
| struct sg_table *sgt; |
| struct scatterlist *sg; |
| |
| if (!size || !usr_pgs) |
| return -EINVAL; |
| |
| pages = size / PG_SIZE4K; |
| |
| down_read(&mm->mmap_sem); |
| vma = find_vma(mm, uva); |
| while (vma && (uva + size > vma->vm_end)) |
| vma = find_vma(mm, vma->vm_end + 1); |
| |
| if (!vma) { |
| pr_err("%s: Failed to get VMA region for 0x%x (%d)\n", |
| __func__, uva, size); |
| up_read(&mm->mmap_sem); |
| return -EINVAL; |
| } |
| if (vma->vm_flags & (VM_WRITE | VM_MAYWRITE)) |
| w = 1; |
| |
| if (vma->vm_flags & VM_IO) |
| i = get_io_pages(mm, uva, pages, usr_pgs); |
| else |
| i = get_user_pages(current, mm, uva, pages, w, 1, |
| usr_pgs, NULL); |
| up_read(&mm->mmap_sem); |
| |
| if (i < 0) |
| return i; |
| |
| if (i < pages) { |
| res = -EFAULT; |
| goto err_pages; |
| } |
| |
| sgt = kzalloc(sizeof(*sgt), GFP_KERNEL); |
| if (!sgt) { |
| res = -ENOMEM; |
| goto err_pages; |
| } |
| |
| res = sg_alloc_table(sgt, pages, GFP_KERNEL); |
| |
| if (res < 0) |
| goto err_sg; |
| |
| for_each_sg(sgt->sgl, sg, sgt->nents, i) |
| sg_set_page(sg, usr_pgs[i], PAGE_SIZE, 0); |
| |
| da = iommu_vmap(mmu, da, sgt, IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32); |
| |
| if (!IS_ERR_VALUE(da)) |
| return da; |
| res = (int)da; |
| |
| sg_free_table(sgt); |
| err_sg: |
| kfree(sgt); |
| i = pages; |
| err_pages: |
| while (i--) |
| put_page(usr_pgs[i]); |
| return res; |
| } |
| |
| /** |
| * user_to_dsp_unmap() - unmaps DSP virtual buffer. |
| * @mmu: Pointer to iommu handle. |
| * @da DSP address |
| * |
| * This function unmaps a user space buffer into DSP virtual address. |
| * |
| */ |
| int user_to_dsp_unmap(struct iommu *mmu, u32 da) |
| { |
| unsigned i; |
| struct sg_table *sgt; |
| struct scatterlist *sg; |
| |
| sgt = iommu_vunmap(mmu, da); |
| if (!sgt) |
| return -EFAULT; |
| |
| for_each_sg(sgt->sgl, sg, sgt->nents, i) |
| put_page(sg_page(sg)); |
| sg_free_table(sgt); |
| kfree(sgt); |
| |
| return 0; |
| } |
| |
| /* |
| * ======== wait_for_start ======== |
| * Wait for the singal from DSP that it has started, or time out. |
| */ |
| bool wait_for_start(struct bridge_dev_context *dev_context, u32 dw_sync_addr) |
| { |
| u16 timeout = TIHELEN_ACKTIMEOUT; |
| |
| /* Wait for response from board */ |
| while (__raw_readw(dw_sync_addr) && --timeout) |
| udelay(10); |
| |
| /* If timed out: return false */ |
| if (!timeout) { |
| pr_err("%s: Timed out waiting DSP to Start\n", __func__); |
| return false; |
| } |
| return true; |
| } |