diff options
Diffstat (limited to 'firmware/target/arm/tms320dm320/dsp-dm320.c')
-rw-r--r-- | firmware/target/arm/tms320dm320/dsp-dm320.c | 198 |
1 files changed, 102 insertions, 96 deletions
diff --git a/firmware/target/arm/tms320dm320/dsp-dm320.c b/firmware/target/arm/tms320dm320/dsp-dm320.c index 24c0145a01..e90e05c8f4 100644 --- a/firmware/target/arm/tms320dm320/dsp-dm320.c +++ b/firmware/target/arm/tms320dm320/dsp-dm320.c | |||
@@ -25,123 +25,129 @@ | |||
25 | 25 | ||
26 | /* A "DSP image" is an array of these, terminated by raw_data_size_half = 0. */ | 26 | /* A "DSP image" is an array of these, terminated by raw_data_size_half = 0. */ |
27 | struct dsp_section { | 27 | struct dsp_section { |
28 | const unsigned short *raw_data; | 28 | const unsigned short *raw_data; |
29 | unsigned short physical_addr; | 29 | unsigned short physical_addr; |
30 | unsigned short raw_data_size_half; | 30 | unsigned short raw_data_size_half; |
31 | }; | 31 | }; |
32 | 32 | ||
33 | /* Must define struct dsp_section before including the image. */ | 33 | /* Must define struct dsp_section before including the image. */ |
34 | #include "dsp_image_helloworld.h" | 34 | #include "dsp_image_helloworld.h" |
35 | 35 | ||
36 | #ifdef DEBUG | 36 | #ifdef DEBUG |
37 | static void dsp_status(void) { | 37 | static void dsp_status(void) |
38 | unsigned short hpib_ctl = IO_DSPC_HPIB_CONTROL; | 38 | { |
39 | unsigned short hpib_stat = IO_DSPC_HPIB_STATUS; | 39 | unsigned short hpib_ctl = IO_DSPC_HPIB_CONTROL; |
40 | char buffer1[80], buffer2[80]; | 40 | unsigned short hpib_stat = IO_DSPC_HPIB_STATUS; |
41 | char buffer1[80], buffer2[80]; | ||
41 | 42 | ||
42 | DEBUGF("dsp_status(): clkc_hpib=%u clkc_dsp=%u", | 43 | DEBUGF("dsp_status(): clkc_hpib=%u clkc_dsp=%u", |
43 | !!(IO_CLK_MOD0 & (1 << 11)), !!(IO_CLK_MOD0 & (1 << 10))); | 44 | !!(IO_CLK_MOD0 & (1 << 11)), !!(IO_CLK_MOD0 & (1 << 10))); |
44 | 45 | ||
45 | DEBUGF("dsp_status(): irq_dsphint=%u 7fff=%04x scratch_status=%04x" | 46 | DEBUGF("dsp_status(): irq_dsphint=%u 7fff=%04x scratch_status=%04x" |
46 | " acked=%04x", | 47 | " acked=%04x", |
47 | (IO_INTC_IRQ0 >> IRQ_DSPHINT) & 1, DSP_(0x7fff), DSP_(_status), | 48 | (IO_INTC_IRQ0 >> IRQ_DSPHINT) & 1, DSP_(0x7fff), DSP_(_status), |
48 | DSP_(_acked)); | 49 | DSP_(_acked)); |
49 | #define B(f,w,b,m) if ((w & (1 << b)) == 0) \ | 50 | #define B(f,w,b,m) if ((w & (1 << b)) == 0) \ |
50 | strcat(f, "!"); \ | 51 | strcat(f, "!"); \ |
51 | strcat(f, #m "|"); | 52 | strcat(f, #m "|"); |
52 | strcpy(buffer1, ""); | 53 | strcpy(buffer1, ""); |
53 | B(buffer1, hpib_ctl, 0, EN); | 54 | B(buffer1, hpib_ctl, 0, EN); |
54 | B(buffer1, hpib_ctl, 3, NMI); | 55 | B(buffer1, hpib_ctl, 3, NMI); |
55 | B(buffer1, hpib_ctl, 5, EXCHG); | 56 | B(buffer1, hpib_ctl, 5, EXCHG); |
56 | B(buffer1, hpib_ctl, 7, DINT0); | 57 | B(buffer1, hpib_ctl, 7, DINT0); |
57 | B(buffer1, hpib_ctl, 8, DRST); | 58 | B(buffer1, hpib_ctl, 8, DRST); |
58 | B(buffer1, hpib_ctl, 9, DHOLD); | 59 | B(buffer1, hpib_ctl, 9, DHOLD); |
59 | B(buffer1, hpib_ctl, 10, BIO); | 60 | B(buffer1, hpib_ctl, 10, BIO); |
60 | 61 | ||
61 | strcpy(buffer2, ""); | 62 | strcpy(buffer2, ""); |
62 | B(buffer2, hpib_stat, 8, HOLDA); | 63 | B(buffer2, hpib_stat, 8, HOLDA); |
63 | B(buffer2, hpib_stat, 12, DXF); | 64 | B(buffer2, hpib_stat, 12, DXF); |
64 | 65 | ||
65 | DEBUGF("dsp_status(): hpib: ctl=%s stat=%s", buffer1, buffer2); | 66 | DEBUGF("dsp_status(): hpib: ctl=%s stat=%s", buffer1, buffer2); |
66 | #undef B | 67 | #undef B |
67 | } | 68 | } |
68 | #endif | 69 | #endif |
69 | 70 | ||
70 | static void dsp_reset(void) { | 71 | static void dsp_reset(void) |
71 | DSP_(0x7fff) = 0xdead; | 72 | { |
73 | DSP_(0x7fff) = 0xdead; | ||
72 | 74 | ||
73 | IO_DSPC_HPIB_CONTROL &= ~(1 << 8); | 75 | IO_DSPC_HPIB_CONTROL &= ~(1 << 8); |
74 | /* HPIB bus cycles will lock up the ARM in here. Don't touch DSP RAM. */ | 76 | /* HPIB bus cycles will lock up the ARM in here. Don't touch DSP RAM. */ |
75 | nop; nop; | 77 | nop; nop; |
76 | IO_DSPC_HPIB_CONTROL |= 1 << 8; | 78 | IO_DSPC_HPIB_CONTROL |= 1 << 8; |
77 | 79 | ||
78 | /* TODO: Timeout. */ | 80 | /* TODO: Timeout. */ |
79 | while (DSP_(0x7fff) != 0); | 81 | while (DSP_(0x7fff) != 0); |
80 | } | 82 | } |
81 | 83 | ||
82 | void dsp_wake(void) { | 84 | void dsp_wake(void) |
83 | /* If this is called concurrently, we may overlap setting and resetting the | 85 | { |
84 | bit, which causes lost interrupts to the DSP. */ | 86 | /* If this is called concurrently, we may overlap setting and resetting the |
85 | int old_level = set_irq_level(IRQ_DISABLED); | 87 | bit, which causes lost interrupts to the DSP. */ |
86 | 88 | int old_level = set_irq_level(IRQ_DISABLED); | |
87 | /* The first time you INT0 the DSP, the ROM loader will branch to your RST | 89 | |
88 | handler. Subsequent times, your INT0 handler will get executed. */ | 90 | /* The first time you INT0 the DSP, the ROM loader will branch to your RST |
89 | IO_DSPC_HPIB_CONTROL &= ~(1 << 7); | 91 | handler. Subsequent times, your INT0 handler will get executed. */ |
90 | nop; nop; | 92 | IO_DSPC_HPIB_CONTROL &= ~(1 << 7); |
91 | IO_DSPC_HPIB_CONTROL |= 1 << 7; | 93 | nop; nop; |
92 | 94 | IO_DSPC_HPIB_CONTROL |= 1 << 7; | |
93 | set_irq_level(old_level); | 95 | |
96 | set_irq_level(old_level); | ||
94 | } | 97 | } |
95 | 98 | ||
96 | static void dsp_load(const struct dsp_section *im) { | 99 | static void dsp_load(const struct dsp_section *im) |
97 | while (im->raw_data_size_half) { | 100 | { |
98 | volatile unsigned short *data_ptr = &DSP_(im->physical_addr); | 101 | while (im->raw_data_size_half) { |
99 | unsigned int i; | 102 | volatile unsigned short *data_ptr = &DSP_(im->physical_addr); |
100 | 103 | unsigned int i; | |
101 | /* Use 16-bit writes. */ | 104 | |
102 | if (im->raw_data) { | 105 | /* Use 16-bit writes. */ |
103 | DEBUGF("dsp_load(): loading %u words at 0x%04x (0x%08lx)", | 106 | if (im->raw_data) { |
104 | im->raw_data_size_half, im->physical_addr, | 107 | DEBUGF("dsp_load(): loading %u words at 0x%04x (0x%08lx)", |
105 | (unsigned long)data_ptr); | 108 | im->raw_data_size_half, im->physical_addr, |
106 | 109 | (unsigned long)data_ptr); | |
107 | for (i = 0; i < im->raw_data_size_half; i++) { | 110 | |
108 | data_ptr[i] = im->raw_data[i]; | 111 | for (i = 0; i < im->raw_data_size_half; i++) { |
109 | } | 112 | data_ptr[i] = im->raw_data[i]; |
110 | } else { | 113 | } |
111 | DEBUGF("dsp_load(): clearing %u words at 0x%04x (0x%08lx)", | 114 | } else { |
112 | im->raw_data_size_half, im->physical_addr, | 115 | DEBUGF("dsp_load(): clearing %u words at 0x%04x (0x%08lx)", |
113 | (unsigned long)data_ptr); | 116 | im->raw_data_size_half, im->physical_addr, |
114 | 117 | (unsigned long)data_ptr); | |
115 | for (i = 0; i < im->raw_data_size_half; i++) { | 118 | |
116 | data_ptr[i] = 0; | 119 | for (i = 0; i < im->raw_data_size_half; i++) { |
117 | } | 120 | data_ptr[i] = 0; |
118 | } | 121 | } |
119 | 122 | } | |
120 | im++; | 123 | |
121 | } | 124 | im++; |
125 | } | ||
122 | } | 126 | } |
123 | 127 | ||
124 | void dsp_init(void) { | 128 | void dsp_init(void) |
125 | IO_INTC_IRQ0 = 1 << 11; | 129 | { |
126 | IO_INTC_EINT0 |= 1 << 11; | 130 | IO_INTC_IRQ0 = 1 << 11; |
127 | 131 | IO_INTC_EINT0 |= 1 << 11; | |
128 | dsp_reset(); | 132 | |
129 | dsp_load(dsp_image_helloworld); | 133 | dsp_reset(); |
134 | dsp_load(dsp_image_helloworld); | ||
130 | } | 135 | } |
131 | 136 | ||
132 | void DSPHINT(void) { | 137 | void DSPHINT(void) |
133 | unsigned int i; | 138 | { |
134 | char buffer[80]; | 139 | unsigned int i; |
135 | 140 | char buffer[80]; | |
136 | IO_INTC_IRQ0 = 1 << 11; | 141 | |
137 | 142 | IO_INTC_IRQ0 = 1 << 11; | |
138 | /* DSP stores one character per word. */ | 143 | |
139 | for (i = 0; i < sizeof(buffer); i++) { | 144 | /* DSP stores one character per word. */ |
140 | buffer[i] = (&DSP_(_status))[i]; | 145 | for (i = 0; i < sizeof(buffer); i++) { |
141 | } | 146 | buffer[i] = (&DSP_(_status))[i]; |
142 | 147 | } | |
143 | /* Release shared area to DSP. */ | 148 | |
144 | dsp_wake(); | 149 | /* Release shared area to DSP. */ |
145 | 150 | dsp_wake(); | |
146 | DEBUGF("DSP: %s", buffer); | 151 | |
152 | DEBUGF("DSP: %s", buffer); | ||
147 | } | 153 | } |