int omap_rproc_activate(struct omap_device *od)
{
int i, ret = 0;
struct rproc *rproc = platform_get_drvdata(&od->pdev);
struct device *dev = rproc->dev;
struct omap_rproc_pdata *pdata = dev->platform_data;
struct omap_rproc_timers_info *timers = pdata->timers;
struct omap_rproc_priv *rpp = rproc->priv;
#ifdef CONFIG_REMOTE_PROC_AUTOSUSPEND
struct iommu *iommu;
if (!rpp->iommu) {
iommu = iommu_get(pdata->iommu_name);
if (IS_ERR(iommu)) {
dev_err(dev, "iommu_get error: %ld\n",
PTR_ERR(iommu));
return PTR_ERR(iommu);
}
rpp->iommu = iommu;
}
if (!rpp->mbox)
rpp->mbox = omap_mbox_get(pdata->sus_mbox_name, NULL);
#endif
/**
* explicitly configure a boot address from which remoteproc
* starts executing code when taken out of reset.
*/
_load_boot_addr(rproc, rpp->bootaddr);
/**
* Domain is in HW SUP thus in hw_auto but
* since remoteproc will be enabled clkdm
* needs to be in sw_sup (Do not let it idle).
*/
if (pdata->clkdm)
clkdm_wakeup(pdata->clkdm);
for (i = 0; i < pdata->timers_cnt; i++)
omap_dm_timer_start(timers[i].odt);
for (i = 0; i < od->hwmods_cnt; i++) {
ret = omap_hwmod_enable(od->hwmods[i]);
if (ret) {
for (i = 0; i < pdata->timers_cnt; i++)
omap_dm_timer_stop(timers[i].odt);
break;
}
}
/**
* Domain is in force_wkup but since remoteproc
* was enabled it is safe now to switch clkdm
* to hw_auto (let it idle).
*/
if (pdata->clkdm)
clkdm_allow_idle(pdata->clkdm);
return ret;
}
static int _init_pm_flags(struct rproc *rproc)
{
struct omap_rproc_pdata *pdata = rproc->dev->platform_data;
struct omap_rproc_priv *rpp = rproc->priv;
struct omap_mbox *mbox;
if (!rpp->mbox) {
mbox = omap_mbox_get(pdata->sus_mbox_name, NULL);
if (IS_ERR(mbox))
return PTR_ERR(mbox);
rpp->mbox = mbox;
}
if (!pdata->idle_addr)
goto err_idle;
rpp->idle = ioremap(pdata->idle_addr, sizeof(u32));
if (!rpp->idle)
goto err_idle;
if (!pdata->suspend_addr)
goto err_suspend;
rpp->suspend = ioremap(pdata->suspend_addr, sizeof(u32));
if (!rpp->suspend)
goto err_suspend;
rpp->idle_mask = pdata->idle_mask;
rpp->suspend_mask = pdata->suspend_mask;
return 0;
err_suspend:
iounmap(rpp->idle);
rpp->idle = NULL;
err_idle:
omap_mbox_put(rpp->mbox, NULL);
rpp->mbox = NULL;
return -EIO;
}
/* Initiliaze WKUP_M3, load the binary blob and let it run */
static int wkup_m3_init(void)
{
struct clk *m3_clk;
struct omap_hwmod *wkup_m3_oh;
const struct firmware *firmware;
int ret = 0;
wkup_m3_oh = omap_hwmod_lookup("wkup_m3");
if (!wkup_m3_oh) {
pr_err("%s: could not find omap_hwmod\n", __func__);
ret = -ENODEV;
goto exit;
}
ipc_regs = ioremap(A8_M3_IPC_REGS, 0x4*8);
if (!ipc_regs) {
pr_err("Could not ioremap the IPC area\b");
ret = -ENOMEM;
goto exit;
}
m3_eoi = ioremap(M3_TXEV_EOI, 0x4);
if (!m3_eoi) {
pr_err("Could not ioremap the EOI register\n");
ret = -ENOMEM;
goto err1;
}
/* Reserve the MBOX for sending messages to M3 */
m3_mbox = omap_mbox_get("wkup_m3", &wkup_m3_mbox_notifier);
if (IS_ERR(m3_mbox)) {
pr_err("Could not reserve mailbox for A8->M3 IPC\n");
ret = -ENODEV;
goto err2;
}
/* Enable access to the M3 code and data area from A8 */
m3_clk = clk_get(NULL, "wkup_m3_fck");
if (IS_ERR(m3_clk)) {
pr_err("%s failed to enable WKUP_M3 clock\n", __func__);
goto err3;
}
if (clk_enable(m3_clk)) {
pr_err("%s WKUP_M3: clock enable Failed\n", __func__);
goto err4;
}
m3_code = ioremap(M3_UMEM, SZ_16K);
if (!m3_code) {
pr_err("%s Could not ioremap M3 code space\n", __func__);
ret = -ENOMEM;
goto err5;
}
pr_info("Trying to load am335x-pm-firmware.bin (60 secs timeout)\n");
ret = request_firmware(&firmware, "am335x-pm-firmware.bin", mpu_dev);
if (ret < 0) {
dev_err(mpu_dev, "request_firmware failed\n");
goto err6;
} else {
memcpy(m3_code, firmware->data, firmware->size);
pr_info("Copied the M3 firmware to UMEM\n");
}
ret = request_irq(AM33XX_IRQ_M3_M3SP_TXEV, wkup_m3_txev_handler,
IRQF_DISABLED, "wkup_m3_txev", NULL);
if (ret) {
pr_err("%s request_irq failed for 0x%x\n", __func__,
AM33XX_IRQ_M3_M3SP_TXEV);
goto err6;
}
m3_state = M3_STATE_RESET;
ret = omap_hwmod_deassert_hardreset(wkup_m3_oh, "wkup_m3");
if (ret) {
pr_err("Could not deassert the reset for WKUP_M3\n");
goto err6;
} else {
return 0;
}
err6:
release_firmware(firmware);
iounmap(m3_code);
err5:
clk_disable(m3_clk);
err4:
clk_put(m3_clk);
err3:
omap_mbox_put(m3_mbox, &wkup_m3_mbox_notifier);
err2:
iounmap(m3_eoi);
err1:
iounmap(ipc_regs);
exit:
return ret;
}
/*
* ======== 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)
dsp_mmu_exit(mmu);
mmu = dsp_mmu_init();
if (IS_ERR(mmu)) {
dev_err(bridge, "dsp_mmu_init failed!\n");
dev_context->dsp_mmu = NULL;
status = (int)mmu;
}
}
if (!status) {
dev_context->dsp_mmu = mmu;
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;
}