1 files changed, 137 insertions, 162 deletions

diff --git a/sound/pci/asihpi/hpi6000.c b/sound/pci/asihpi/hpi6000.c
index 1b9bf9395cfe..3e3c2ef6efd8 100644
--- a/sound/pci/asihpi/hpi6000.c
+++ b/sound/pci/asihpi/hpi6000.c
@@ -43,16 +43,17 @@
 #define HPI_HIF_ERROR_MASK      0x4000
 
 /* HPI6000 specific error codes */
+#define HPI6000_ERROR_BASE 900  /* not actually used anywhere */
 
-#define HPI6000_ERROR_BASE                              900
+/* operational/messaging errors */
 #define HPI6000_ERROR_MSG_RESP_IDLE_TIMEOUT             901
-#define HPI6000_ERROR_MSG_RESP_SEND_MSG_ACK             902
+
 #define HPI6000_ERROR_MSG_RESP_GET_RESP_ACK             903
 #define HPI6000_ERROR_MSG_GET_ADR                       904
 #define HPI6000_ERROR_RESP_GET_ADR                      905
 #define HPI6000_ERROR_MSG_RESP_BLOCKWRITE32             906
 #define HPI6000_ERROR_MSG_RESP_BLOCKREAD32              907
-#define HPI6000_ERROR_MSG_INVALID_DSP_INDEX             908
+
 #define HPI6000_ERROR_CONTROL_CACHE_PARAMS              909
 
 #define HPI6000_ERROR_SEND_DATA_IDLE_TIMEOUT            911
@@ -62,7 +63,6 @@
 #define HPI6000_ERROR_SEND_DATA_CMD                     915
 #define HPI6000_ERROR_SEND_DATA_WRITE                   916
 #define HPI6000_ERROR_SEND_DATA_IDLECMD                 917
-#define HPI6000_ERROR_SEND_DATA_VERIFY                  918
 
 #define HPI6000_ERROR_GET_DATA_IDLE_TIMEOUT             921
 #define HPI6000_ERROR_GET_DATA_ACK                      922
@@ -76,9 +76,8 @@
 
 #define HPI6000_ERROR_MSG_RESP_GETRESPCMD               961
 #define HPI6000_ERROR_MSG_RESP_IDLECMD                  962
-#define HPI6000_ERROR_MSG_RESP_BLOCKVERIFY32            963
 
-/* adapter init errors */
+/* Initialisation/bootload errors */
 #define HPI6000_ERROR_UNHANDLED_SUBSYS_ID               930
 
 /* can't access PCI2040 */
@@ -210,6 +209,8 @@ static void adapter_get_asserts(struct hpi_adapter_obj *pao,
 static short create_adapter_obj(struct hpi_adapter_obj *pao,
         u32 *pos_error_code);
 
+static void delete_adapter_obj(struct hpi_adapter_obj *pao);
+
 /* local globals */
 
 static u16 gw_pci_read_asserts; /* used to count PCI2040 errors */
@@ -217,17 +218,7 @@ static u16 gw_pci_write_asserts;	/* used to count PCI2040 errors */
 
 static void subsys_message(struct hpi_message *phm, struct hpi_response *phr)
 {
-
         switch (phm->function) {
-        case HPI_SUBSYS_OPEN:
-        case HPI_SUBSYS_CLOSE:
-        case HPI_SUBSYS_GET_INFO:
-        case HPI_SUBSYS_DRIVER_UNLOAD:
-        case HPI_SUBSYS_DRIVER_LOAD:
-        case HPI_SUBSYS_FIND_ADAPTERS:
-                /* messages that should not get here */
-                phr->error = HPI_ERROR_UNIMPLEMENTED;
-                break;
         case HPI_SUBSYS_CREATE_ADAPTER:
                 subsys_create_adapter(phm, phr);
                 break;
@@ -243,7 +234,6 @@ static void subsys_message(struct hpi_message *phm, struct hpi_response *phr)
 static void control_message(struct hpi_adapter_obj *pao,
         struct hpi_message *phm, struct hpi_response *phr)
 {
-
         switch (phm->function) {
         case HPI_CONTROL_GET_STATE:
                 if (pao->has_control_cache) {
@@ -251,7 +241,13 @@ static void control_message(struct hpi_adapter_obj *pao,
                         err = hpi6000_update_control_cache(pao, phm);
 
                         if (err) {
-                                phr->error = err;
+                                if (err >= HPI_ERROR_BACKEND_BASE) {
+                                        phr->error =
+                                                HPI_ERROR_CONTROL_CACHING;
+                                        phr->specific_error = err;
+                                } else {
+                                        phr->error = err;
+                                }
                                 break;
                         }
 
@@ -262,16 +258,15 @@ static void control_message(struct hpi_adapter_obj *pao,
                 }
                 hw_message(pao, phm, phr);
                 break;
-        case HPI_CONTROL_GET_INFO:
-                hw_message(pao, phm, phr);
-                break;
         case HPI_CONTROL_SET_STATE:
                 hw_message(pao, phm, phr);
-                hpi_sync_control_cache(((struct hpi_hw_obj *)pao->priv)->
-                        p_cache, phm, phr);
+                hpi_cmn_control_cache_sync_to_msg(((struct hpi_hw_obj *)pao->
+                                priv)->p_cache, phm, phr);
                 break;
+
+        case HPI_CONTROL_GET_INFO:
         default:
-                phr->error = HPI_ERROR_INVALID_FUNC;
+                hw_message(pao, phm, phr);
                 break;
         }
 }
@@ -280,26 +275,12 @@ static void adapter_message(struct hpi_adapter_obj *pao,
         struct hpi_message *phm, struct hpi_response *phr)
 {
         switch (phm->function) {
-        case HPI_ADAPTER_GET_INFO:
-                hw_message(pao, phm, phr);
-                break;
         case HPI_ADAPTER_GET_ASSERT:
                 adapter_get_asserts(pao, phm, phr);
                 break;
-        case HPI_ADAPTER_OPEN:
-        case HPI_ADAPTER_CLOSE:
-        case HPI_ADAPTER_TEST_ASSERT:
-        case HPI_ADAPTER_SELFTEST:
-        case HPI_ADAPTER_GET_MODE:
-        case HPI_ADAPTER_SET_MODE:
-        case HPI_ADAPTER_FIND_OBJECT:
-        case HPI_ADAPTER_GET_PROPERTY:
-        case HPI_ADAPTER_SET_PROPERTY:
-        case HPI_ADAPTER_ENUM_PROPERTY:
-                hw_message(pao, phm, phr);
-                break;
+
         default:
-                phr->error = HPI_ERROR_INVALID_FUNC;
+                hw_message(pao, phm, phr);
                 break;
         }
 }
@@ -311,7 +292,7 @@ static void outstream_message(struct hpi_adapter_obj *pao,
         case HPI_OSTREAM_HOSTBUFFER_ALLOC:
         case HPI_OSTREAM_HOSTBUFFER_FREE:
                 /* Don't let these messages go to the HW function because
-                 * they're called without allocating the spinlock.
+                 * they're called without locking the spinlock.
                  * For the HPI6000 adapters the HW would return
                  * HPI_ERROR_INVALID_FUNC anyway.
                  */
@@ -331,7 +312,7 @@ static void instream_message(struct hpi_adapter_obj *pao,
         case HPI_ISTREAM_HOSTBUFFER_ALLOC:
         case HPI_ISTREAM_HOSTBUFFER_FREE:
                 /* Don't let these messages go to the HW function because
-                 * they're called without allocating the spinlock.
+                 * they're called without locking the spinlock.
                  * For the HPI6000 adapters the HW would return
                  * HPI_ERROR_INVALID_FUNC anyway.
                  */
@@ -355,7 +336,7 @@ void HPI_6000(struct hpi_message *phm, struct hpi_response *phr)
         /* subsytem messages get executed by every HPI. */
         /* All other messages are ignored unless the adapter index matches */
         /* an adapter in the HPI */
-        HPI_DEBUG_LOG(DEBUG, "O %d,F %x\n", phm->object, phm->function);
+        /*HPI_DEBUG_LOG(DEBUG, "O %d,F %x\n", phm->wObject, phm->wFunction); */
 
         /* if Dsp has crashed then do not communicate with it any more */
         if (phm->object != HPI_OBJ_SUBSYSTEM) {
@@ -433,21 +414,13 @@ static void subsys_create_adapter(struct hpi_message *phm,
         struct hpi_adapter_obj ao;
         struct hpi_adapter_obj *pao;
         u32 os_error_code;
-        short error = 0;
+        u16 err = 0;
         u32 dsp_index = 0;
 
         HPI_DEBUG_LOG(VERBOSE, "subsys_create_adapter\n");
 
         memset(&ao, 0, sizeof(ao));
 
-        /* this HPI only creates adapters for TI/PCI2040 based devices */
-        if (phm->u.s.resource.bus_type != HPI_BUS_PCI)
-                return;
-        if (phm->u.s.resource.r.pci->vendor_id != HPI_PCI_VENDOR_ID_TI)
-                return;
-        if (phm->u.s.resource.r.pci->device_id != HPI_PCI_DEV_ID_PCI2040)
-                return;
-
         ao.priv = kzalloc(sizeof(struct hpi_hw_obj), GFP_KERNEL);
         if (!ao.priv) {
                 HPI_DEBUG_LOG(ERROR, "cant get mem for adapter object\n");
@@ -456,16 +429,19 @@ static void subsys_create_adapter(struct hpi_message *phm,
         }
 
         /* create the adapter object based on the resource information */
-        /*? memcpy(&ao.Pci,&phm->u.s.Resource.r.Pci,sizeof(ao.Pci)); */
         ao.pci = *phm->u.s.resource.r.pci;
 
-        error = create_adapter_obj(&ao, &os_error_code);
-        if (!error)
-                error = hpi_add_adapter(&ao);
-        if (error) {
+        err = create_adapter_obj(&ao, &os_error_code);
+        if (err) {
+                delete_adapter_obj(&ao);
+                if (err >= HPI_ERROR_BACKEND_BASE) {
+                        phr->error = HPI_ERROR_DSP_BOOTLOAD;
+                        phr->specific_error = err;
+                } else {
+                        phr->error = err;
+                }
+
                 phr->u.s.data = os_error_code;
-                kfree(ao.priv);
-                phr->error = error;
                 return;
         }
         /* need to update paParentAdapter */
@@ -473,7 +449,7 @@ static void subsys_create_adapter(struct hpi_message *phm,
         if (!pao) {
                 /* We just added this adapter, why can't we find it!? */
                 HPI_DEBUG_LOG(ERROR, "lost adapter after boot\n");
-                phr->error = 950;
+                phr->error = HPI_ERROR_BAD_ADAPTER;
                 return;
         }
 
@@ -482,9 +458,8 @@ static void subsys_create_adapter(struct hpi_message *phm,
                 phw->ado[dsp_index].pa_parent_adapter = pao;
         }
 
-        phr->u.s.aw_adapter_list[ao.index] = ao.adapter_type;
+        phr->u.s.adapter_type = ao.adapter_type;
         phr->u.s.adapter_index = ao.index;
-        phr->u.s.num_adapters++;
         phr->error = 0;
 }
 
@@ -492,20 +467,13 @@ static void subsys_delete_adapter(struct hpi_message *phm,
         struct hpi_response *phr)
 {
         struct hpi_adapter_obj *pao = NULL;
-        struct hpi_hw_obj *phw;
 
-        pao = hpi_find_adapter(phm->adapter_index);
+        pao = hpi_find_adapter(phm->obj_index);
         if (!pao)
                 return;
 
-        phw = (struct hpi_hw_obj *)pao->priv;
-
-        if (pao->has_control_cache)
-                hpi_free_control_cache(phw->p_cache);
-
+        delete_adapter_obj(pao);
         hpi_delete_adapter(pao);
-        kfree(phw);
-
         phr->error = 0;
 }
 
@@ -519,9 +487,6 @@ static short create_adapter_obj(struct hpi_adapter_obj *pao,
         u32 control_cache_count = 0;
         struct hpi_hw_obj *phw = (struct hpi_hw_obj *)pao->priv;
 
-        /* init error reporting */
-        pao->dsp_crashed = 0;
-
         /* The PCI2040 has the following address map */
         /* BAR0 - 4K = HPI control and status registers on PCI2040 (HPI CSR) */
         /* BAR1 - 32K = HPI registers on DSP */
@@ -575,36 +540,36 @@ static short create_adapter_obj(struct hpi_adapter_obj *pao,
         /* get info about the adapter by asking the adapter */
         /* send a HPI_ADAPTER_GET_INFO message */
         {
-                struct hpi_message hM;
-                struct hpi_response hR0;        /* response from DSP 0 */
-                struct hpi_response hR1;        /* response from DSP 1 */
+                struct hpi_message hm;
+                struct hpi_response hr0;        /* response from DSP 0 */
+                struct hpi_response hr1;        /* response from DSP 1 */
                 u16 error = 0;
 
                 HPI_DEBUG_LOG(VERBOSE, "send ADAPTER_GET_INFO\n");
-                memset(&hM, 0, sizeof(hM));
-                hM.type = HPI_TYPE_MESSAGE;
-                hM.size = sizeof(struct hpi_message);
-                hM.object = HPI_OBJ_ADAPTER;
-                hM.function = HPI_ADAPTER_GET_INFO;
-                hM.adapter_index = 0;
-                memset(&hR0, 0, sizeof(hR0));
-                memset(&hR1, 0, sizeof(hR1));
-                hR0.size = sizeof(hR0);
-                hR1.size = sizeof(hR1);
-
-                error = hpi6000_message_response_sequence(pao, 0, &hM, &hR0);
-                if (hR0.error) {
-                        HPI_DEBUG_LOG(DEBUG, "message error %d\n", hR0.error);
-                        return hR0.error;
+                memset(&hm, 0, sizeof(hm));
+                hm.type = HPI_TYPE_MESSAGE;
+                hm.size = sizeof(struct hpi_message);
+                hm.object = HPI_OBJ_ADAPTER;
+                hm.function = HPI_ADAPTER_GET_INFO;
+                hm.adapter_index = 0;
+                memset(&hr0, 0, sizeof(hr0));
+                memset(&hr1, 0, sizeof(hr1));
+                hr0.size = sizeof(hr0);
+                hr1.size = sizeof(hr1);
+
+                error = hpi6000_message_response_sequence(pao, 0, &hm, &hr0);
+                if (hr0.error) {
+                        HPI_DEBUG_LOG(DEBUG, "message error %d\n", hr0.error);
+                        return hr0.error;
                 }
                 if (phw->num_dsp == 2) {
-                        error = hpi6000_message_response_sequence(pao, 1, &hM,
-                                &hR1);
+                        error = hpi6000_message_response_sequence(pao, 1, &hm,
+                                &hr1);
                         if (error)
                                 return error;
                 }
-                pao->adapter_type = hR0.u.a.adapter_type;
-                pao->index = hR0.u.a.adapter_index;
+                pao->adapter_type = hr0.u.ax.info.adapter_type;
+                pao->index = hr0.u.ax.info.adapter_index;
         }
 
         memset(&phw->control_cache[0], 0,
@@ -618,22 +583,37 @@ static short create_adapter_obj(struct hpi_adapter_obj *pao,
                 control_cache_count =
                         hpi_read_word(&phw->ado[0],
                         HPI_HIF_ADDR(control_cache_count));
-                pao->has_control_cache = 1;
 
                 phw->p_cache =
                         hpi_alloc_control_cache(control_cache_count,
-                        control_cache_size, (struct hpi_control_cache_info *)
+                        control_cache_size, (unsigned char *)
                         &phw->control_cache[0]
                         );
-                if (!phw->p_cache)
-                        pao->has_control_cache = 0;
-        } else
-                pao->has_control_cache = 0;
+                if (phw->p_cache)
+                        pao->has_control_cache = 1;
+        }
 
         HPI_DEBUG_LOG(DEBUG, "get adapter info ASI%04X index %d\n",
                 pao->adapter_type, pao->index);
         pao->open = 0;  /* upon creation the adapter is closed */
-        return 0;
+
+        if (phw->p_cache)
+                phw->p_cache->adap_idx = pao->index;
+
+        return hpi_add_adapter(pao);
+}
+
+static void delete_adapter_obj(struct hpi_adapter_obj *pao)
+{
+        struct hpi_hw_obj *phw = (struct hpi_hw_obj *)pao->priv;
+
+        if (pao->has_control_cache)
+                hpi_free_control_cache(phw->p_cache);
+
+        /* reset DSPs on adapter */
+        iowrite32(0x0003000F, phw->dw2040_HPICSR + HPI_RESET);
+
+        kfree(phw);
 }
 
 /************************************************************************/
@@ -645,11 +625,13 @@ static void adapter_get_asserts(struct hpi_adapter_obj *pao,
 #ifndef HIDE_PCI_ASSERTS
         /* if we have PCI2040 asserts then collect them */
         if ((gw_pci_read_asserts > 0) || (gw_pci_write_asserts > 0)) {
-                phr->u.a.serial_number =
+                phr->u.ax.assert.p1 =
                         gw_pci_read_asserts * 100 + gw_pci_write_asserts;
-                phr->u.a.adapter_index = 1;     /* assert count */
-                phr->u.a.adapter_type = -1;     /* "dsp index" */
-                strcpy(phr->u.a.sz_adapter_assert, "PCI2040 error");
+                phr->u.ax.assert.p2 = 0;
+                phr->u.ax.assert.count = 1;     /* assert count */
+                phr->u.ax.assert.dsp_index = -1;        /* "dsp index" */
+                strcpy(phr->u.ax.assert.sz_message, "PCI2040 error");
+                phr->u.ax.assert.dsp_msg_addr = 0;
                 gw_pci_read_asserts = 0;
                 gw_pci_write_asserts = 0;
                 phr->error = 0;
@@ -686,10 +668,10 @@ static short hpi6000_adapter_boot_load_dsp(struct hpi_adapter_obj *pao,
 
         /* NOTE don't use wAdapterType in this routine. It is not setup yet */
 
-        switch (pao->pci.subsys_device_id) {
+        switch (pao->pci.pci_dev->subsystem_device) {
         case 0x5100:
         case 0x5110:    /* ASI5100 revB or higher with C6711D */
-        case 0x5200:    /* ASI5200 PC_ie version of ASI5100 */
+        case 0x5200:    /* ASI5200 PCIe version of ASI5100 */
         case 0x6100:
         case 0x6200:
                 boot_load_family = HPI_ADAPTER_FAMILY_ASI(0x6200);
@@ -709,8 +691,9 @@ static short hpi6000_adapter_boot_load_dsp(struct hpi_adapter_obj *pao,
          * note that bits 4..15 are read-only and so should always return zero,
          * even though we wrote 1 to them
          */
-        for (i = 0; i < 1000; i++)
-                delay = ioread32(phw->dw2040_HPICSR + HPI_RESET);
+        hpios_delay_micro_seconds(1000);
+        delay = ioread32(phw->dw2040_HPICSR + HPI_RESET);
+
         if (delay != dw2040_reset) {
                 HPI_DEBUG_LOG(ERROR, "INIT_PCI2040 %x %x\n", dw2040_reset,
                         delay);
@@ -743,8 +726,7 @@ static short hpi6000_adapter_boot_load_dsp(struct hpi_adapter_obj *pao,
         dw2040_reset = dw2040_reset & (~0x00000008);
         iowrite32(dw2040_reset, phw->dw2040_HPICSR + HPI_RESET);
         /*delay to allow DSP to get going */
-        for (i = 0; i < 100; i++)
-                delay = ioread32(phw->dw2040_HPICSR + HPI_RESET);
+        hpios_delay_micro_seconds(100);
 
         /* loop through all DSPs, downloading DSP code */
         for (dsp_index = 0; dsp_index < phw->num_dsp; dsp_index++) {
@@ -783,27 +765,27 @@ static short hpi6000_adapter_boot_load_dsp(struct hpi_adapter_obj *pao,
                          */
                         /* bypass PLL */
                         hpi_write_word(pdo, 0x01B7C100, 0x0000);
-                        for (i = 0; i < 100; i++)
-                                delay = ioread32(phw->dw2040_HPICSR +
-                                        HPI_RESET);
+                        hpios_delay_micro_seconds(100);
 
                         /*  ** use default of PLL  x7 ** */
                         /* EMIF = 225/3=75MHz */
                         hpi_write_word(pdo, 0x01B7C120, 0x8002);
+                        hpios_delay_micro_seconds(100);
+
                         /* peri = 225/2 */
                         hpi_write_word(pdo, 0x01B7C11C, 0x8001);
+                        hpios_delay_micro_seconds(100);
+
                         /* cpu  = 225/1 */
                         hpi_write_word(pdo, 0x01B7C118, 0x8000);
-                        /* ~200us delay */
-                        for (i = 0; i < 2000; i++)
-                                delay = ioread32(phw->dw2040_HPICSR +
-                                        HPI_RESET);
+
+                        /* ~2ms delay */
+                        hpios_delay_micro_seconds(2000);
+
                         /* PLL not bypassed */
                         hpi_write_word(pdo, 0x01B7C100, 0x0001);
-                        /* ~200us delay */
-                        for (i = 0; i < 2000; i++)
-                                delay = ioread32(phw->dw2040_HPICSR +
-                                        HPI_RESET);
+                        /* ~2ms delay */
+                        hpios_delay_micro_seconds(2000);
                 }
 
                 /* test r/w to internal DSP memory
@@ -927,9 +909,7 @@ static short hpi6000_adapter_boot_load_dsp(struct hpi_adapter_obj *pao,
                 }
 
                 /* delay a little to allow SDRAM and DSP to "get going" */
-
-                for (i = 0; i < 1000; i++)
-                        delay = ioread32(phw->dw2040_HPICSR + HPI_RESET);
+                hpios_delay_micro_seconds(1000);
 
                 /* test access to SDRAM */
                 {
@@ -976,7 +956,7 @@ static short hpi6000_adapter_boot_load_dsp(struct hpi_adapter_obj *pao,
 
                 /* write the DSP code down into the DSPs memory */
                 /*HpiDspCode_Open(nBootLoadFamily,&DspCode,pdwOsErrorCode); */
-                dsp_code.ps_dev = pao->pci.p_os_data;
+                dsp_code.ps_dev = pao->pci.pci_dev;
 
                 error = hpi_dsp_code_open(boot_load_family, &dsp_code,
                         pos_error_code);
@@ -1073,8 +1053,7 @@ static short hpi6000_adapter_boot_load_dsp(struct hpi_adapter_obj *pao,
 
                 /* step 3. Start code by sending interrupt */
                 iowrite32(0x00030003, pdo->prHPI_control);
-                for (i = 0; i < 10000; i++)
-                        delay = ioread32(phw->dw2040_HPICSR + HPI_RESET);
+                hpios_delay_micro_seconds(10000);
 
                 /* wait for a non-zero value in hostcmd -
                  * indicating initialization is complete
@@ -1101,7 +1080,7 @@ static short hpi6000_adapter_boot_load_dsp(struct hpi_adapter_obj *pao,
                          * locks up with a bluescreen (NOT GPF or pagefault).
                          */
                         else
-                                hpios_delay_micro_seconds(1000);
+                                hpios_delay_micro_seconds(10000);
                 }
                 if (timeout == 0)
                         return HPI6000_ERROR_INIT_NOACK;
@@ -1132,14 +1111,14 @@ static short hpi6000_adapter_boot_load_dsp(struct hpi_adapter_obj *pao,
                                 mask = 0xFFFFFF00L;
                                 /* ASI5100 uses AX6 code, */
                                 /* but has no PLD r/w register to test */
-                                if (HPI_ADAPTER_FAMILY_ASI(pao->pci.
-                                                subsys_device_id) ==
+                                if (HPI_ADAPTER_FAMILY_ASI(pao->pci.pci_dev->
+                                                subsystem_device) ==
                                         HPI_ADAPTER_FAMILY_ASI(0x5100))
                                         mask = 0x00000000L;
                                 /* ASI5200 uses AX6 code, */
                                 /* but has no PLD r/w register to test */
-                                if (HPI_ADAPTER_FAMILY_ASI(pao->pci.
-                                                subsys_device_id) ==
+                                if (HPI_ADAPTER_FAMILY_ASI(pao->pci.pci_dev->
+                                                subsystem_device) ==
                                         HPI_ADAPTER_FAMILY_ASI(0x5200))
                                         mask = 0x00000000L;
                                 break;
@@ -1204,7 +1183,7 @@ static u32 hpi_read_word(struct dsp_obj *pdo, u32 address)
         u32 data = 0;
 
         if (hpi_set_address(pdo, address))
-                return 0;       /*? no way to return error */
+                return 0;       /*? No way to return error */
 
         /* take care of errata in revB DSP (2.0.1) */
         data = ioread32(pdo->prHPI_data);
@@ -1340,10 +1319,6 @@ static short hpi6000_message_response_sequence(struct hpi_adapter_obj *pao,
         u32 *p_data;
         u16 error = 0;
 
-        /* does the DSP we are referencing exist? */
-        if (dsp_index >= phw->num_dsp)
-                return HPI6000_ERROR_MSG_INVALID_DSP_INDEX;
-
         ack = hpi6000_wait_dsp_ack(pao, dsp_index, HPI_HIF_IDLE);
         if (ack & HPI_HIF_ERROR_MASK) {
                 pao->dsp_crashed++;
@@ -1351,9 +1326,7 @@ static short hpi6000_message_response_sequence(struct hpi_adapter_obj *pao,
         }
         pao->dsp_crashed = 0;
 
-        /* send the message */
-
-        /* get the address and size */
+        /* get the message address and size */
         if (phw->message_buffer_address_on_dsp == 0) {
                 timeout = TIMEOUT;
                 do {
@@ -1368,10 +1341,9 @@ static short hpi6000_message_response_sequence(struct hpi_adapter_obj *pao,
         } else
                 address = phw->message_buffer_address_on_dsp;
 
-        /*        dwLength = sizeof(struct hpi_message); */
         length = phm->size;
 
-        /* send it */
+        /* send the message */
         p_data = (u32 *)phm;
         if (hpi6000_dsp_block_write32(pao, dsp_index, address, p_data,
                         (u16)length / 4))
@@ -1385,7 +1357,7 @@ static short hpi6000_message_response_sequence(struct hpi_adapter_obj *pao,
         if (ack & HPI_HIF_ERROR_MASK)
                 return HPI6000_ERROR_MSG_RESP_GET_RESP_ACK;
 
-        /* get the address and size */
+        /* get the response address */
         if (phw->response_buffer_address_on_dsp == 0) {
                 timeout = TIMEOUT;
                 do {
@@ -1409,7 +1381,7 @@ static short hpi6000_message_response_sequence(struct hpi_adapter_obj *pao,
         if (!timeout)
                 length = sizeof(struct hpi_response);
 
-        /* get it */
+        /* get the response */
         p_data = (u32 *)phr;
         if (hpi6000_dsp_block_read32(pao, dsp_index, address, p_data,
                         (u16)length / 4))
@@ -1805,17 +1777,11 @@ static void hw_message(struct hpi_adapter_obj *pao, struct hpi_message *phm,
         hpios_dsplock_lock(pao);
         error = hpi6000_message_response_sequence(pao, dsp_index, phm, phr);
 
-        /* maybe an error response */
-        if (error) {
-                /* something failed in the HPI/DSP interface */
-                phr->error = error;
-                /* just the header of the response is valid */
-                phr->size = sizeof(struct hpi_response_header);
+        if (error)      /* something failed in the HPI/DSP interface */
                 goto err;
-        }
 
-        if (phr->error != 0)    /* something failed in the DSP */
-                goto err;
+        if (phr->error) /* something failed in the DSP */
+                goto out;
 
         switch (phm->function) {
         case HPI_OSTREAM_WRITE:
@@ -1827,21 +1793,30 @@ static void hw_message(struct hpi_adapter_obj *pao, struct hpi_message *phm,
                 error = hpi6000_get_data(pao, dsp_index, phm, phr);
                 break;
         case HPI_ADAPTER_GET_ASSERT:
-                phr->u.a.adapter_index = 0;     /* dsp 0 default */
+                phr->u.ax.assert.dsp_index = 0; /* dsp 0 default */
                 if (num_dsp == 2) {
-                        if (!phr->u.a.adapter_type) {
+                        if (!phr->u.ax.assert.count) {
                                 /* no assert from dsp 0, check dsp 1 */
                                 error = hpi6000_message_response_sequence(pao,
                                         1, phm, phr);
-                                phr->u.a.adapter_index = 1;
+                                phr->u.ax.assert.dsp_index = 1;
                         }
                 }
         }
 
-        if (error)
-                phr->error = error;
-
 err:
+        if (error) {
+                if (error >= HPI_ERROR_BACKEND_BASE) {
+                        phr->error = HPI_ERROR_DSP_COMMUNICATION;
+                        phr->specific_error = error;
+                } else {
+                        phr->error = error;
+                }
+
+                /* just the header of the response is valid */
+                phr->size = sizeof(struct hpi_response_header);
+        }
+out:
         hpios_dsplock_unlock(pao);
         return;
 }